O presente trabalho aborda as deformações por encurtamento dos pilares durante a fase construtiva. Deformações, estas, devidas à progressão das cargas, devidas à fluência e devidas à retração. Os encurtamentos provocam deslocamentos que são parcialmente corrigidos pelo processo construtivo, seja a obra executada com os pavimentos no nível de projeto ou com o piso-a-piso fixo. Dessa forma, o deslocamento final é inferior àquele obtido por um modelo de passo único que considera todas as ações ocorrendo após a finalização da estrutura. Uma metodologia para a estimativa dos encurtamentos e das correções é proposta e os resultados obtidos a partir dessa metodologia são validados por meio de comparações com modelos computacionais. Além disso, um carregamento fictício de temperatura é proposto para simular as correções construtivas no modelo de passo único. A variação de temperatura mostrou-se simples, precisa e útil nas análises de edificações de múltiplos pavimentos. Por fim, são discutidos os possíveis danos em elementos não-estruturais e maneiras de se mitigar esse problema. / The present study adress the issue of column shortening during the construction. These deformations are due to the progression of loads, due to creep and due to shrinkage. Shortenings cause displacements, that are partially compensated by the construction process, either the construction is performed with the floors executed at the design level, or the construction executed with fixed floor-to-floor dimension. Thus, the final displacement is lower than the displacement obtained by a single-step model, that considers all actions taking place after the structure is finished. A methodology for the estimation of shortenings and corrections is proposed and the results obtained from this methodology are validated through comparisons with computational models. In addition, a fictitious temperature load is proposed to simulate the constructive corrections in the single-step model. The temperature variation proved to be simple, accurate and useful in the analysis of multi-storey buildings. Finally, the possible damages in non-structural elements and ways to mitigate this problem are discussed.

Na Capa, Folha de Rosto e Ficha Catalogr?fica da obra constam o t?tulo: "Filtro de areia para o manejo da ?gua de chuva". / Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-06-15T18:51:48Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) marco_antonio_oliveira.pdf: 5190699 bytes, checksum: edae8a04f3a512075df7923ed8c2c65b (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-07-18T11:28:58Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) marco_antonio_oliveira.pdf: 5190699 bytes, checksum: edae8a04f3a512075df7923ed8c2c65b (MD5) / Made available in DSpace on 2018-07-18T11:28:58Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) marco_antonio_oliveira.pdf: 5190699 bytes, checksum: edae8a04f3a512075df7923ed8c2c65b (MD5) Previous issue date: 2017 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Funda??o Diamantinense de Apoio ao Ensino, Pesquisa e Extens?o (FUNDAEPE) / No cen?rio atual de acentua??o da car?ncia de recursos naturais em grandes e pequenos centros urbanos, a problem?tica do abastecimento de ?gua pot?vel ? uma quest?o central para a sa?de das popula??es, dada a variedade de doen?as veiculadas pela ?gua, especialmente para consumo humano. Cerca de 30% do consumo humano pode ser efetuado com ?gua de chuva, dado muito importante tendo em vista a escassez do recurso. Em tempos de mudan?as clim?ticas (estiagens prolongadas, cargas de chuvas concentradas, etc.) a retomada de conhecimentos ligados ao aproveitamento da ?gua de chuva ? de interesse para a popula??o urbana e rural. A procura por caminhos de aperfei?oamento das t?cnicas de uso sustent?vel de recursos naturais ? a meta deste trabalho, enfocando a recolha da ?gua de chuva como estrat?gia poss?vel e re-emergente para os tempos atuais. S?o objetivos espec?ficos da pesquisa: avaliar a qualidade da ?gua de chuva em Diamantina (MG) e desenhar filtros naturais que viabilizem o uso n?o pot?vel de forma segura. Como a falta de tratamento da ?gua est? relacionada diretamente com a transmiss?o de doen?as, ? evidente a import?ncia do trabalho quanto aos aspectos de sa?de ambiental e ao atendimento da linha de pesquisa ?Tecnologia e vigil?ncia em sa?de? do Mestrado Interdisciplinar SaSA e do Laborat?rio de Constru??es Sustent?veis no LIPEMVALE (UFVJM). Foram desenvolvidos prot?tipos de filtros compostos de areia, carv?o e pedra, caracterizados pelo uso de mateiriais de f?cil obten??o, para a purifica??o da ?gua de chuva recolhida em telhados de cer?mica. As amostras foram coletadas de Janeiro a Maio de 2017, sendo avaliados par?metros f?sico qu?micos (condutividade, cor aparente, pH, turbidez e salinidade) e microbiol?gicos (coliformes totais e Escherichia coli) antes e depois de passarem pelo processo de filtra??o. A ?gua de chuva apresentou valores compat?veis com usos n?o pot?veis. O filtro alterou positivamente a qualidade da ?gua de chuva da classe 4 para a classe 3, conforme a resolu??o CONAMA 357/2005. O aproveitamento da ?gua de chuva foi considerado tecnologia social devido ao baixo custo e replicabilidade, sendo indicado para usos n?o pot?veis. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Sa?de, Sociedade e Ambiente, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / In the current scenario of accentuation of the lack of natural resources in large and small urban centers, the problem of the supply of drinking water is a central issue for the health of populations, given the variety of diseases transmitted through water, especially for human consumption. About of 30% of human consumption can be made with rainwater, a very important factor given the scarcity of the resource. In times of climate changes (prolonged drougths, loads of concentred rain, etc), the resumption of knowledge related to the use of rainwater is of interest to the urban and rural population. The search for ways to improve the techniques of sustainable use of natural resources is the goal of this paper, focusing the collecting rainwater as a re-emergent strategy for current times. The specific objectives of the research are: to evaluate the quality of rainwater in Diamantina (Minas Gerais, Brazil) and to design natural filters that enable non-potable use in a safe way. As the lack of water treatment is directly related to the transmission of diseases, it is evident the importance of the work on the aspects of environmental health and the attendance of the research line 'Technology and health surveyllance' of the Interdisciplinary Master SaSA and the Laboratory of Sustainable Buildings in LIPEMVALE (UFVJM). Prototypes of sand, charcoal and stone composite filters were developed characterized by the use of readly available matrices for the purification of rain water collected on ceramic roofs. The samples were collected from January to May of 2017, and evaluated physical chemical parameters (conductivity, apparent color, pH, turbidity and salinity) and microbiological parameters (total coliforms, and Escherichia coli) were evaluated before and after of filtration process. Rainwater presented values compatible with non-potable uses. The filter positively changed the rainwater quality from class 4 to class 3, according CONAMA resolution 357/2005. The use of rainwater was considered social technology due to the low cost and replicability.

Made available in DSpace on 2016-04-15T23:44:48Z (GMT). No. of bitstreams: 5 Daniel Hummel Bittencourt1.pdf: 2684414 bytes, checksum: 6e983eb5ea777741467067adae4348a1 (MD5) Daniel Hummel Bittencourt2.pdf: 3035571 bytes, checksum: 84fddddc98b980caeae75ef7ee3ff306 (MD5) Daniel Hummel Bittencourt3.pdf: 1262558 bytes, checksum: baa2d1e6d5d05c0a07da837bfd8afba4 (MD5) Daniel Hummel Bittencourt4.pdf: 2431286 bytes, checksum: f3f43e60e295dd50c0f54d8a4df0abd9 (MD5) Daniel Hummel Bittencourt5.pdf: 2425612 bytes, checksum: fe92d4e5c06e54ef6b5090bbb6ce0774 (MD5) Previous issue date: 2007-03-08 / With the intent of better understanding and defining how large scale public spaces, in which esthetic connotation is based on form, are formed first as a concept and then physically, shall be presented in this work questions regarding the different classes of structural systems, construction materials, construction techniques, design techniques, as well as the cultural streams which have been a major influence on projects where the most representative architecture reveals itself. / Com o intuito de melhor entender e definir como se formam, física e conceitualmente, projetos públicos de grande porte cuja conotação estética está baseada na estrutura, serão apresentados neste estudo questões referentes às classes de sistemas estruturais, materiais construtivos, técnicas construtivas, técnicas projetuais, assim como as correntes culturais que influenciam e há muito vem influenciando projetos pelos quais a arquitetura mais representativa se revela.

[pt] Assim como qualquer item, uma construção possui uma vida útil que considera o seu nascimento como momento que ela é concebida em projeto, e sua morte como sendo sua demolição final. Durante sua vida uma construção deve passar por manutenções (preventivas, adaptativas e corretivas) que permitem o prolongamento do seu uso, mantendo o seu nível de desempenho dentro do aceitável. Muitas vezes as ações corretivas se dão em períodos curtos de tempo, intervalos abaixo do esperado por seus usuários ou administradores. Obviamente toda intervenção trás consigo um custo financeiro, que cresce dependendo do momento em que ela ocorra dentro da vida da construção. Muito além do custo financeiro, toda atividade causa impacto no meio ambiente, gerando assim um custo ambiental. Determinar o preço ambiental do refazimento de uma obra, em um curto espaço de tempo (menor que o esperado) ilustra o peso deste custo, muitas vezes invisível ou negligenciado, é necessário. A Análise do refazimento de uma obra devido a falhas construtivas que trouxeram uma drástica queda no desempenho no uso do empreendimento demonstrou que o custo ambiental é proporcionalmente muito maior que o custo financeiro esperado. Sabendo que o custo financeiro de correções construtivas ao longo da vida do imóvel cresce em uma progressão geométrica de base 5, permite comparar o quanto o custo ambiental pode desequilibrar a sustentabilidade. Analisando que a intervenção de uma área de 4.200 m quadrados utilizou uma área ambiental de 1.360.000 m quadrados, faz com que os sinais de alerta se acendam demonstrando que a correção de um erro construtivo é muito maior para o meio ambiente que o custo financeiro envolvido. / [en] The world population has been growing at a dizzying rate in recent centuries. And this accelerated population gain brings with it numerous consequences, among them, the need to produce more food, housing and infrastructure. This all leads us to consume more and more natural resources and also increases the generation of waste and waste. The so-called carrying capacity of the planet (condition of sustaining a population), has not evolved in the last centuries in the same index of population growth, that is, humanity is consuming natural resources and generating waste at a speed higher than that which the planet is capable of. produce and absorb. To continue supporting the growing population of the planet, it is necessary to experiment with new technologies, methodologies and processes so that this growth is supported by the tripod of sustainability. The term sustainable development has the most common, and accepted, meaning that points to a tripod of economic growth, environmental preservation and social development. Civil construction is an essential economic sector in the development of any country and society, being responsible for a large fraction of the quality of life of human beings, since they alter the natural environment for better use of space. Understanding the environmental cost of correcting a construction failure is the objective of this work. There are countless studies that point to the financial cost of the so-called rework, but few look at this phenomenon under the environmental lens. The entire life cycle of an enterprise, from its design to its ruin, through its construction and use, causes environmental marks. To correct flaws in works already completed, or in use, there is a need to consume new materials, involving an entire production chain and generating new waste. To produce a certain input that will be used in the correction of a pathology, the following are required: consumption of raw materials to conceive it, energy consumption to manufacture it, waste to produce it, expenses with transportation to take it from the factory to the point of use. All of these steps in the process consume environmental resources. At the other end of the error correction, for the pathology to be eliminated, it must be removed from the site (demolition of a crooked wall, for example) using energy and producing residues from this removal. This waste will be transported to a suitable disposal site, that is, using more energy in this process. In addition, it is still necessary to transform a harmful waste into something less aggressive to the environment. Given the above, the purpose of this research is to understand the size of the impact that a constructive failure can cause to the environment depending on its severity and the moment it is detected. In order to carry out this work, a project was followed up with a short time of use, but which needed major interventions due to the flaws found. With the analysis of the presented pathologies it was possible to measure how much they weighed, and will weigh, to the environment. In addition, analyzing the origin and the correction method implemented will allow to index each of the flaws found environmentally, measuring how much the planet s carrying capacity could have been preserved had these defects not occurred. The useful life of a building can be understood as the time interval from its birth, marked by its design concept, until its death with its demolition and / or disuse. Project useful life (VUP) must be defined by the developer and the project designer. VUP, despite being a temporal measure, has an economic character, being defined as the best relation between global cost versus time to enjoy the good. Preventive maintenance takes place constantly and aims to increase the life of the project, whereas corrective maintenance must occur in a timely manner and correcting failures in points that are already performing below the desired level. Adaptive maintenance has the objective of adjusting the enterprise to receive new technologies, new equipment and to comply with the new legislation The economic character of the useful life of a good is characterized by its global cost, which must be defined as the sum of the cost of acquisition, or construction, of the good and the cost of maintenance throughout its life. The total cost of a construction during its life includes the costs of planning, design, construction, operation, maintenance and demolition. These construction costs represent between 15 percent and 20 percent of the total cost; 80 percent of the amount is spent on operation and maintenance and only 2 percent to 5 percent of the amount is spent on planning and design (conceptual and detailed). The total cost of a construction during its life includes the costs of planning, design, construction, operation, maintenance and demolition. These construction costs represent between 15 percent and 20 percent of the total cost; 80 percent of the amount is spent on operation and maintenance and only 2 percent to 5 percent of the amount is spent on planning and design (conceptual and detailed). The useful life of a building, for example, goes through the useful life of its components such as its foundations, superstructures, hydro-sanitary installations, electrical installations, facades, internal cladding, paintings and waterproofing. Studies show that corrective maintenance costs up to five times more than preventive maintenance. Corrective maintenance is often required in shorter time cycles than initially imagined (and desired) by those responsible for the enterprise. Currently, numerous failures in new construction (or with little use) are verified, such as buildings, bridges, roads, streets and public supply networks, which range from faults of all kinds, from simple to catastrophic. The service life can be extended with preventive, corrective and adaptive maintenance interventions. The extension of useful life is directly impacted on the overall cost of construction. The lowest global cost system is usually not the lowest initial cost nor the longest lasting. Seeking to optimize the cost-benefit ratio is the best option for society. The useful life of a building must be supported by the tripod of socio-environmental importance, cost of implementation and cost of maintenance over the years. When investors seek to save money by building buildings with low quality standards, and with low maintenance ease, they increase the cost of future maintenance. At the other end of the real estate market, users do not carry out preventive maintenance because they consider its cost to be high, often allowing certain components of the project to come close to the level of unacceptable performance and only then carry out the maintenance that has now become corrective, costing financially more than the preventive maintenance previously denied. The Sitter rule, or Law of 5, determines that the relative cost of an intervention grows in a geometric progression of ratio 5 over time in the project and its maintenance. The sooner a problem is perceived, the lower its cost. Sustainability, despite not having a unanimous definition, is a concept that must integrate aspects of social-ecological dimensions, economic factors, and the short, medium and long term advantages. Putting together all the concepts expressed by several authors, sustainability can be defined as the attempt to achieve economic and social growth while preserving the finite resources of the environment. For more than 40 years, humanity s demand for nature has exceeded the planet s replacement capacity. Currently 1.5 Earth planets would be needed to provide the ecological services that were used in the 1980s. Trees are cut faster than they can ripen, more fish are caught than the oceans can replenish and more carbon is emitted than forests and oceans can absorb. The carrying capacity of the planet has been compromised in a way never before experienced by humanity, to meet the current lifestyle of the population. Consumerism is seen as a behavior that leads to an increase in production and, consequently, to economic progress, but this equation is limited by resources that cannot sustain unlimited growth. Finite spaces cannot absorb waste that grows indefinitely. The carrying capacity of a system is obviously influenced by factors such as average income, material expectations and level of technology, that is, energy and material efficiency. There are few systems of indicators that analyze sustainable development in a generic way. The most commonly used indicators globally are as follows: (1) Sustainability Panel, (2) Sustainability Barometer and (3) Ecological Footprint. The indicator called Ecological Footprint has the advantage of being easily visualized, since the Ecological Footprint represents the ecological space necessary to sustain a given system, or community. It is a simple tool that counts the flows of matter and energy that enter and leave an economic system, converting them into areas of land, or water, necessary to sustain such a system. The Ecological Footprint is a method that transforms the consumption of raw materials and the assimilation of waste from an economic system, or from a human population, into an area corresponding to productive land or water. Using this method, it is possible to calculate the area of the ecosystem needed to ensure the eternal survival of a given population or system. Once this equivalent area of the ecosystem has been determined, it is possible to visualize how much it appropriates the carrying capacity of the planet as a whole. In fact, the size of the Footprint can change depending on the new technologies developed, which can be more or less resource-consuming and wastegenerating. The calculation method for measuring the Ecological Footprint, although easily intuitive, is difficult to carry out with regard to data collection.

Com o crescimento do ecoturismo no Brasil, iniciaram a ser implantados vários empreendimentos turísticos na Amazônia, principalmente nas proximidades da cidade de Manaus, este acontecimento fez com que a utilização de recursos naturais disponíveis na região, como folhas de palmeiras nativas e espécies de madeira, voltassem a ter grande emprego como material de revestimento nas coberturas destas edificações. E em contrapartida, raros são os estudos das variáveis que interferem no projeto, na aplicação e na manutenção destes materiais na construção civil. Em vista disto, este trabalho tem o objetivo de fazer um resgate sistemático das técnicas construtivas das coberturas de alguns Hotéis de Selva visitados no Estado do Amazonas. Entrevistas com construtores locais, observações das construções \"in loco\" e a análise das bibliografias levantadas, ajudaram a identificar os principais problemas encontrados, propondo a partir daí alternativas de detalhes projetuais e de execução, diretrizes de manutenção e reparos para garantir um maior desempenho destas envoltórias frente aos impactos da agressividade da Floresta Amazônica, tendo como parâmetros fundamentais a Exeqüibilidade e a Durabilidade do sistema escolhido garantindo assim uma maior adequação da edificação ao meio-ambiente em questão. / With the increase of the Brazilian ecotourism start to be implantated many ecolodges in the Amazonian Forest (especially nearby Manaus City), this happening brought back the large utilization of natural resource disposables on the region, like native palm leaves and several wood species, for the roof sheathing of these tropical hotels, on the other hand, there are very few technic studies about the variables that interfere on the architectonic project, the aplication and the maintenance of these constructive materials. In this aspect, this work has the purpose to make a systematic ransom of the vernacular constructive technics that were used on some hotels existing in the Amazonas State. From the bibliographies that were consulted, the interviews made with the constructors and from the observations of the lodges\' roofs on site, helped to identity the main problems that were found, proposing from then alternatives of projectual and constructive details, maintainable and treatment directives to ensure a better durability of the roofs against the impacts of the environment\'s aggressiveness, having as fundamental parameters the buildbility and the durability of the constructive system chosen and assuring a greater adaptation of the edification at the Amazon too.

O setor industrial produtor de papel e celulose tem aumentado sua relevância comercial nas últimas décadas devido à demanda constantemente crescente. O aumento na competitividade do setor gerado pela economia globalizada e a dificuldade de desenvolvimento de bons planos de produção em ambientes produtivos cada vez mais complexos têm motivado a pesquisa por novas e efetivas ferramentas de auxílio à tomada de decisão. Considerando estas dificuldades, abordamos neste trabalho o problema de dimensionamento e sequenciamento de lotes com foco em empresas com processo integrado de produção de celulose e de papel. Trata-se de um problema de planejamento de médio a curto prazo, geralmente com maior enfoque no curto prazo por considerar o planejamento detalhado da produção em horizontes de planejamento que não superam 30 dias. No processo integrado de celulose e papel, foram consideradas as decisões de produção do digestor, evaporador, caldeira de recuperação e de múltiplas máquinas produtoras de papel, além do controle de estoque de produtos intermediários e finais. Modelos matemáticos da literatura foram modificados e estendidos para incorporar características adicionais do problema como, por exemplo, processos com múltiplas máquinas de papel. Além disso, foram desenvolvidas heurísticas construtivas, heurísticas de melhoria, abordagens de solução híbridas baseadas em algoritmos genéticos combinadas com ferramentas comerciais de solução exata, além de combinações entre os métodos. As abordagens desenvolvidas foram testadas computacionalmente e as melhores combinações de métodos foram definidas. De forma geral, os resultados dessas abordagens foram superiores aos obtidos por ferramentas de solução comerciais puras. Ademais, a variação proposta da heurística de melhoria fixe-e-otimize com mudanças na função objetivo se destacou com relação aos demais métodos, obtendo os melhores resultados, independentemente da qualidade da solução inicial utilizada. As principais contribuições desta tese são a apresentação de modelos matemáticos para representar apropriadamente o problema estudado, e o desenvolvimento de métodos de solução efetivos para resolver o problema. / The pulp and paper industry has been increasing the commercial importance in recent decades due to the constant growing demand. The increasing competitiveness of this sector generated by the globalized economy and the difficulty to develop good production plans in complex production environments have motivated the search for new and effective decision support systems. Given these difficulties, in this thesis we address the lot sizing and scheduling problem focused on integrated pulp and paper mills. This is a problem of medium to short term planning, generally more focused on the short term as it covers detailed production schedules in planning horizons which do not exceed 30 days. In these integrated pulp and paper process the production decisions of digester, evaporator, recovery boiler and multiple paper machines are considered, apart from the inventory control of intermediate and final products. Mathematical models known in the literature were modified and extended to incorporate additional features of the problem, such as processes with multiple paper machines. In addition, constructive and improvement heuristics, and hybrid methods based on genetic algorithms combined with a commercial solver were developed, as well as combinations of these solution approaches. The methods developed were computationally tested and the best combinations of methods were defined. Overall, the results of these methods were superior to the solutions obtained by pure commercial solvers. Moreover, the alternative variation proposed of the improvement heuristic fix-and-optimize with exchanges in the objective function surpassed the other methods, obtaining the best results, regardless of the quality of the initial solution used. The main contribution of this thesis are the presentation of mathematical models that appropriately represents the problem under study, and the development of effective solution methods to deal with the problem.

Com o crescimento do ecoturismo no Brasil, iniciaram a ser implantados vários empreendimentos turísticos na Amazônia, principalmente nas proximidades da cidade de Manaus, este acontecimento fez com que a utilização de recursos naturais disponíveis na região, como folhas de palmeiras nativas e espécies de madeira, voltassem a ter grande emprego como material de revestimento nas coberturas destas edificações. E em contrapartida, raros são os estudos das variáveis que interferem no projeto, na aplicação e na manutenção destes materiais na construção civil. Em vista disto, este trabalho tem o objetivo de fazer um resgate sistemático das técnicas construtivas das coberturas de alguns Hotéis de Selva visitados no Estado do Amazonas. Entrevistas com construtores locais, observações das construções \"in loco\" e a análise das bibliografias levantadas, ajudaram a identificar os principais problemas encontrados, propondo a partir daí alternativas de detalhes projetuais e de execução, diretrizes de manutenção e reparos para garantir um maior desempenho destas envoltórias frente aos impactos da agressividade da Floresta Amazônica, tendo como parâmetros fundamentais a Exeqüibilidade e a Durabilidade do sistema escolhido garantindo assim uma maior adequação da edificação ao meio-ambiente em questão. / With the increase of the Brazilian ecotourism start to be implantated many ecolodges in the Amazonian Forest (especially nearby Manaus City), this happening brought back the large utilization of natural resource disposables on the region, like native palm leaves and several wood species, for the roof sheathing of these tropical hotels, on the other hand, there are very few technic studies about the variables that interfere on the architectonic project, the aplication and the maintenance of these constructive materials. In this aspect, this work has the purpose to make a systematic ransom of the vernacular constructive technics that were used on some hotels existing in the Amazonas State. From the bibliographies that were consulted, the interviews made with the constructors and from the observations of the lodges\' roofs on site, helped to identity the main problems that were found, proposing from then alternatives of projectual and constructive details, maintainable and treatment directives to ensure a better durability of the roofs against the impacts of the environment\'s aggressiveness, having as fundamental parameters the buildbility and the durability of the constructive system chosen and assuring a greater adaptation of the edification at the Amazon too.

O setor industrial produtor de papel e celulose tem aumentado sua relevância comercial nas últimas décadas devido à demanda constantemente crescente. O aumento na competitividade do setor gerado pela economia globalizada e a dificuldade de desenvolvimento de bons planos de produção em ambientes produtivos cada vez mais complexos têm motivado a pesquisa por novas e efetivas ferramentas de auxílio à tomada de decisão. Considerando estas dificuldades, abordamos neste trabalho o problema de dimensionamento e sequenciamento de lotes com foco em empresas com processo integrado de produção de celulose e de papel. Trata-se de um problema de planejamento de médio a curto prazo, geralmente com maior enfoque no curto prazo por considerar o planejamento detalhado da produção em horizontes de planejamento que não superam 30 dias. No processo integrado de celulose e papel, foram consideradas as decisões de produção do digestor, evaporador, caldeira de recuperação e de múltiplas máquinas produtoras de papel, além do controle de estoque de produtos intermediários e finais. Modelos matemáticos da literatura foram modificados e estendidos para incorporar características adicionais do problema como, por exemplo, processos com múltiplas máquinas de papel. Além disso, foram desenvolvidas heurísticas construtivas, heurísticas de melhoria, abordagens de solução híbridas baseadas em algoritmos genéticos combinadas com ferramentas comerciais de solução exata, além de combinações entre os métodos. As abordagens desenvolvidas foram testadas computacionalmente e as melhores combinações de métodos foram definidas. De forma geral, os resultados dessas abordagens foram superiores aos obtidos por ferramentas de solução comerciais puras. Ademais, a variação proposta da heurística de melhoria fixe-e-otimize com mudanças na função objetivo se destacou com relação aos demais métodos, obtendo os melhores resultados, independentemente da qualidade da solução inicial utilizada. As principais contribuições desta tese são a apresentação de modelos matemáticos para representar apropriadamente o problema estudado, e o desenvolvimento de métodos de solução efetivos para resolver o problema. / The pulp and paper industry has been increasing the commercial importance in recent decades due to the constant growing demand. The increasing competitiveness of this sector generated by the globalized economy and the difficulty to develop good production plans in complex production environments have motivated the search for new and effective decision support systems. Given these difficulties, in this thesis we address the lot sizing and scheduling problem focused on integrated pulp and paper mills. This is a problem of medium to short term planning, generally more focused on the short term as it covers detailed production schedules in planning horizons which do not exceed 30 days. In these integrated pulp and paper process the production decisions of digester, evaporator, recovery boiler and multiple paper machines are considered, apart from the inventory control of intermediate and final products. Mathematical models known in the literature were modified and extended to incorporate additional features of the problem, such as processes with multiple paper machines. In addition, constructive and improvement heuristics, and hybrid methods based on genetic algorithms combined with a commercial solver were developed, as well as combinations of these solution approaches. The methods developed were computationally tested and the best combinations of methods were defined. Overall, the results of these methods were superior to the solutions obtained by pure commercial solvers. Moreover, the alternative variation proposed of the improvement heuristic fix-and-optimize with exchanges in the objective function surpassed the other methods, obtaining the best results, regardless of the quality of the initial solution used. The main contribution of this thesis are the presentation of mathematical models that appropriately represents the problem under study, and the development of effective solution methods to deal with the problem.