Made available in DSpace on 2016-06-02T20:09:23Z (GMT). No. of bitstreams: 1 6717.pdf: 4234806 bytes, checksum: 7f07b52b026f378a97637a2bfdeef7a9 (MD5) Previous issue date: 2015-03-30 / Financiadora de Estudos e Projetos / In face of the needs to improve tools that increase productivity in project design, coupled with technical reliability, it was developed a free computer application that performs the equations and details the longitudinal reinforcement of pre-tensioned simply supported prestreessed beams, so it can assist professionals of the área. The program was developed in the graphical environment of Lazarus, which uses Pascal s programming language, in order to use object-oriented programming (OOP), facilitating the user who wishes to have access to the constituent objects. Initially, the user enters with the geometric cross-section s data, as well as the loading characteristics over the beam. In this way, the software will be able to pre-size its longitudinal reinforcement. According to NBR 6118:2014 is necesary to check tensions in both edges of the beam for the serviceability state combination (SLS) and ultimate limit state (ULS) in an empty-load stage, crack control requierments, as well as checks of deflections. The checking for ULS in full-load stage is made by checking the collapse section. Prestressing losses will be properly calculated according to criteria established in NBR 6118:2014, in order to obtain values closer to reality. Finally, the software checks the transverse reinforcement to see if it can resist the efforts of the shear force. This paper also presents the assumptions and normative precepts used in the program. Several examples of validation were made and it is shown how it can turn into an analysis tool. Also presents the listings and it is also given the different possibilities of expansion. / Frente às necessidades em se aprimorar ferramentas que aumentem a produtividade na elaboração de projetos, aliada à confiabilidade técnica, optou-se por desenvolver um aplicativo computacional livre que realiza o cálculo e o detalhamento da armadura longitudinal, ativa e passiva, de vigas com pré-tração e biapoiadas, de forma a auxiliar profissionais da área da engenharia civil no cálculo estrutural de vigas protendidas. O programa está desenvolvido no ambiente gráfico do Lazarus, que utiliza a linguagem Pascal, de forma a utilizar programação orientada ao objeto (POO), facilitando ao usuário que deseje ter acesso aos objetos constituintes. A princípio, o usuário entra com os dados geométricos da seção transversal, assim como os carregamentos solicitantes da viga. Desta forma, o programa esta apto a pré-dimensionar sua armadura longitudinal. São realizadas verificações de tensões, em ambas as bordas, para as combinações no estado limite de serviço (ELS) e no estado limite último (ELU) em vazio, a análise de abertura de fissuras e as verificações de flechas no elemento. A verificação no estado limite último no tempo infinito é feita verificando a ruptura da seção. As perdas de protensão são devidamente calculadas segundo critérios estabelecidos na NBR6118:2014, de forma a obter valores próximos com a realidade. Por fim, verifica-se a armadura transversal para resistir à força cortante. Neste trabalho são, ainda, apresentadas as hipóteses e preceitos normativos usados no programa. São feitos diversos exemplos de validação e mostra-se como o mesmo pode se transformar em ferramenta de análise. São ainda apresentadas as listagens e indicadas, também, as diversas possibilidades de expansão do mesmo.

The aim of the diploma thesis was to draw up a proposal for the project documentation for the realization of the construction of the civic amenities building and that of the sports center. The building is located in Prostějov, cadastral area Prostějov. It is a three-storey building with one underground and two above-ground floors. Across the floors there are spaces for various sports uses, technical background of the building, staff backgrounds and a café. The object is based on the base passages, the vertical structures are formed by blocks of lost formwork and ceramic cavity blocks, the ceiling structures are solved by pre-stressed ceiling panels. The roof is designed as a single-layer, flat with extensive vegetation treatment, the roofing of the roof is finished by means of atics. The project is designed with an emphasis on the layout and constructional design of the building with respect to the parties and the land plan. During the processing I tried to use modern building materials and procedures and to process the building as a functioning unit.

[pt] Colunas protendidas de aço representam uma excelente solução estrutural em escoramentos de grandes estruturas e em colunas de estruturas espaciais de apoio a lonas tensionadas de coberturas de grandes vãos. Após um estudo extensivo do comportamento teórico através do uso do programa ANSYS onde avaliou-se a geometria estrutural mais eficiente, níveis de protensão e características dos cabos de aço, foram então definidos os diversos ensaios experimentais a serem executados em colunas com doze metros de comprimento e com tubos de 89,3 mm de diâmetro. A característica inédita deste estudo é a execução de ensaios tri-dimensionais em escala real deste tipo de coluna. Foram executadas comparações de resultados teóricos com os obtidos experimentalmente e foram feitas recomendações de análise e projeto destas estruturas. / [en] Pre-stressed steel columns represent an efficient structural solution for a great variety of temporary/permanent supports systems including large span spatial structures using pre-tensioned fabrics. The first step of the present investigation comprised a painstaking investigation of the structural behaviour of these members with the aid of finite element simulations performed with the ANSYS program. Its results indicated trends for the determination of the most efficient structural geometries, steel ties pre-stressing levels and characteristics. With these results in hand, the investigation proceeded with full-scale experimental tests executed in twelve meters pre-stressed stayed steel columns with an approximately diameter of ninety millimetres. The main contribution of the present investigation was the conception, development and execution of new tri-dimensional full-scale tests for this load bearing systems. The test results enable theoretical and numerical results to be validated against experimental evidence later to be introduced in structural design codes.