21 |
United Nations peacekeeping and non-state actors a theoretical and empirical analysis of the conditions required for cooperation /Hodgin, Greg January 2009 (has links)
Thesis (M.A.)--Georgia State University, 2009. / Title from title page (Digital Archive@GSU, viewed July 6, 2010) John Duffield, committee chair; Jelena Subotic, Scott Graves, committee members. Includes bibliographical references (p. 53-56).
|
22 |
A atuação do 4º batalhão de polícia de área de fronteira da brigada militar, Rio Grande do Sul, BrasilPinto, Sérgio Roth January 2017 (has links)
Esta pesquisa aborda a atuação do 4° BPAF – Batalhão de Polícia de Área de Fronteira da Brigada Militar no policiamento na Fronteira Noroeste do RS, frente aos crimes transfronteiriços e transnacionais praticados pelas redes de criminosos. A Brigada Militar não possui atribuição legal para atuar frente aos crimes transnacionais que demandam o trabalho de inteligência, envolvendo investigações de redes criminosas internacionais que ultrapassam a linha de fronteira. Na prática, devido a limitações e à falta de efetivo dos Órgãos Federais de segurança na fronteira, a Brigada Militar vem atuando contra estes tipos de crimes. E casos específicos quando o crime é de cunho transnacional o 4° Batalhão de Polícia de Área de Fronteira da Brigada Militar atende pedidos da Polícia Federal e Receita Federal, realizando operações ao longo da Fronteira Noroeste com prisões de contrabandistas, traficantes de drogas e abigeatários. O policiamento do 4°BPAF da Brigada Militar evoluiu ao longo dos anos, passando de simples patrulhas rurais para patrulhas operacionais especializadas em Fronteira. Com a atuação dos criminosos na região da fronteira em crimes transfronteiriços que se tornaram corriqueiros, o comando do 4°BPAF criou o POE- Pelotão de Operações Especiais para atuar nas patrulhas na fronteira. A partir de 2012 o Governo Federal lança o PEF-Plano Estratégico de Fronteira e a ENAFRON- Estratégia Nacional de Fronteira investindo em viaturas, equipamentos, formação e treinamento de recursos humanos para as Organizações Policiais Militares dos estados da federação na Faixa de Fronteira O estado do Rio Grande do Sul aderiu a esse programa da ENAFRON e não demorou muito para o Alto Comando e o Estado Maior da Brigada Militar elaborarem a Diretriz Geral de Segurança Pública em Área de Fronteira N°26/2012 que foi atualizada pela Diretriz de Policiamento em Áreas de Fronteiras N°034/2015. Também ocorreu nesta época um incremento na realização de operações conjuntas da Brigada Militar, tanto com órgãos Federais de segurança pública e com Exército Brasileiro, como em operações Simultâneas Internacionais com a Polícia de Misiones e a Gendarmeria Nacional Argentina, estreitando assim os laços entre as polícias da Argentina e a Brigada Militar. Este trabalho aborda as técnicas de investigação usadas pelo 4° BPAF da Brigada Militar em sua Atividade de Inteligência e modus operandi no combate aos criminosos na Fronteira Noroeste do Rio Grande do Sul. O 4° BPAF tem um papel muito importante na fronteira em relação ao combate a criminalidade, pois realiza um trabalho que vem ajudando a diminuir a criminalidade da sociedade não só a local, mas também contribui para diminuir os índices de violência ligado ao tráfico de drogas, roubos de veículos nos grandes centros urbanos do estado do Rio Grande do Sul. / This research deals with the performance of the 4th BPAF - Border Brigade Military Battalion of the Military Brigade in the policing in the Northwest Frontier of RS against transboundary and transnational crimes practiced by criminal networks. The Military Brigade has no legal authority to act in the face of transnational crimes, which requires the work of intelligence, involving investigations of international criminal networks that cross the border line. In practice, due to limitations and lack of workers of the Federal Border Security Bodies, the Military Brigade has been acting against these types of crimes. Moreover, specific cases when the crime is transnational in nature, the 4th Border Brigade Battalion of the Military Brigade responds to requests from the Federal Police and the Federal Revenue, conducting operations along the Northwest Frontier with arrests of smugglers, drug traffickers and cattle thieves. The policing of the 4th BPAF of the Military Brigade has evolved over the years, going from simple rural patrols to specialized operational patrols on the border. As cross-border crimes became commonplace, the 4th BPAF command created the POE-Special Operations Squadron to operate on border patrols. Starting in 2012, the Federal Government launches the Border Strategic Plan (PEF) and ENAFRON - National Border Strategy investing in vehicles, equipment, and human resources training for the Military Police Organizations of the states of the federation in the border fringe. The state of Rio Grande do Sul adhered to the ENAFRON program and it did not take long for the High Command and the General Staff of the Military Brigade to elaborate the General Directive of Public Security in Border Area N ° 26/2012 updated by the Police Directive in Border Areas N ° 034/2015. At the same time, there was an increase of joint operations of the Military Brigade, both with Federal public security organs and with the Brazilian Army, as well as in simultaneous international operations with the Misiones Police and the Argentine National Gendarmerie, thus strengthening the ties between the Argentine police and the Military Brigade. This work addresses the investigation techniques of the 4th BPAF of the Military Brigade in its Intelligence Activity and modus operandi in the fight against criminals in the Northwest Frontier of Rio Grande do Sul. The 4th BPAF has a very important role in the frontier in relation to combat crime, since it carries out work that has helped to reduce the society criminality, not only local crime, but also contributes to reduce the rates of violence related to drug trafficking, theft of vehicles in large urban centers in the state of Rio Grande do Sul.
|
23 |
A atuação do 4º batalhão de polícia de área de fronteira da brigada militar, Rio Grande do Sul, BrasilPinto, Sérgio Roth January 2017 (has links)
Esta pesquisa aborda a atuação do 4° BPAF – Batalhão de Polícia de Área de Fronteira da Brigada Militar no policiamento na Fronteira Noroeste do RS, frente aos crimes transfronteiriços e transnacionais praticados pelas redes de criminosos. A Brigada Militar não possui atribuição legal para atuar frente aos crimes transnacionais que demandam o trabalho de inteligência, envolvendo investigações de redes criminosas internacionais que ultrapassam a linha de fronteira. Na prática, devido a limitações e à falta de efetivo dos Órgãos Federais de segurança na fronteira, a Brigada Militar vem atuando contra estes tipos de crimes. E casos específicos quando o crime é de cunho transnacional o 4° Batalhão de Polícia de Área de Fronteira da Brigada Militar atende pedidos da Polícia Federal e Receita Federal, realizando operações ao longo da Fronteira Noroeste com prisões de contrabandistas, traficantes de drogas e abigeatários. O policiamento do 4°BPAF da Brigada Militar evoluiu ao longo dos anos, passando de simples patrulhas rurais para patrulhas operacionais especializadas em Fronteira. Com a atuação dos criminosos na região da fronteira em crimes transfronteiriços que se tornaram corriqueiros, o comando do 4°BPAF criou o POE- Pelotão de Operações Especiais para atuar nas patrulhas na fronteira. A partir de 2012 o Governo Federal lança o PEF-Plano Estratégico de Fronteira e a ENAFRON- Estratégia Nacional de Fronteira investindo em viaturas, equipamentos, formação e treinamento de recursos humanos para as Organizações Policiais Militares dos estados da federação na Faixa de Fronteira O estado do Rio Grande do Sul aderiu a esse programa da ENAFRON e não demorou muito para o Alto Comando e o Estado Maior da Brigada Militar elaborarem a Diretriz Geral de Segurança Pública em Área de Fronteira N°26/2012 que foi atualizada pela Diretriz de Policiamento em Áreas de Fronteiras N°034/2015. Também ocorreu nesta época um incremento na realização de operações conjuntas da Brigada Militar, tanto com órgãos Federais de segurança pública e com Exército Brasileiro, como em operações Simultâneas Internacionais com a Polícia de Misiones e a Gendarmeria Nacional Argentina, estreitando assim os laços entre as polícias da Argentina e a Brigada Militar. Este trabalho aborda as técnicas de investigação usadas pelo 4° BPAF da Brigada Militar em sua Atividade de Inteligência e modus operandi no combate aos criminosos na Fronteira Noroeste do Rio Grande do Sul. O 4° BPAF tem um papel muito importante na fronteira em relação ao combate a criminalidade, pois realiza um trabalho que vem ajudando a diminuir a criminalidade da sociedade não só a local, mas também contribui para diminuir os índices de violência ligado ao tráfico de drogas, roubos de veículos nos grandes centros urbanos do estado do Rio Grande do Sul. / This research deals with the performance of the 4th BPAF - Border Brigade Military Battalion of the Military Brigade in the policing in the Northwest Frontier of RS against transboundary and transnational crimes practiced by criminal networks. The Military Brigade has no legal authority to act in the face of transnational crimes, which requires the work of intelligence, involving investigations of international criminal networks that cross the border line. In practice, due to limitations and lack of workers of the Federal Border Security Bodies, the Military Brigade has been acting against these types of crimes. Moreover, specific cases when the crime is transnational in nature, the 4th Border Brigade Battalion of the Military Brigade responds to requests from the Federal Police and the Federal Revenue, conducting operations along the Northwest Frontier with arrests of smugglers, drug traffickers and cattle thieves. The policing of the 4th BPAF of the Military Brigade has evolved over the years, going from simple rural patrols to specialized operational patrols on the border. As cross-border crimes became commonplace, the 4th BPAF command created the POE-Special Operations Squadron to operate on border patrols. Starting in 2012, the Federal Government launches the Border Strategic Plan (PEF) and ENAFRON - National Border Strategy investing in vehicles, equipment, and human resources training for the Military Police Organizations of the states of the federation in the border fringe. The state of Rio Grande do Sul adhered to the ENAFRON program and it did not take long for the High Command and the General Staff of the Military Brigade to elaborate the General Directive of Public Security in Border Area N ° 26/2012 updated by the Police Directive in Border Areas N ° 034/2015. At the same time, there was an increase of joint operations of the Military Brigade, both with Federal public security organs and with the Brazilian Army, as well as in simultaneous international operations with the Misiones Police and the Argentine National Gendarmerie, thus strengthening the ties between the Argentine police and the Military Brigade. This work addresses the investigation techniques of the 4th BPAF of the Military Brigade in its Intelligence Activity and modus operandi in the fight against criminals in the Northwest Frontier of Rio Grande do Sul. The 4th BPAF has a very important role in the frontier in relation to combat crime, since it carries out work that has helped to reduce the society criminality, not only local crime, but also contributes to reduce the rates of violence related to drug trafficking, theft of vehicles in large urban centers in the state of Rio Grande do Sul.
|
24 |
Organizační kultura a motivační klima organizace / Organizational culture and motivational climate of the organizationHÜTTNEROVÁ, Pavla January 2010 (has links)
In my thesis I occupied myself with motivation, culture and efficiency of an organisation,which is one of the security forces in The Czech Republic. The organisation is Firefighters department Český Krumlov. The motivation system and organisation culture in organisations like this has got so many particularities and differences, which result from its nature and category of activities, the organisation has to provide. The aim of the thesis is to analyse, assess and recense a culture of organizaton, motivational environment and the way the organisation efficiency is connected to its organisation.
|
25 |
Avaliação da qualidade de vida dos servidores da segurança pública do estado de Goiás / Quality of life assessment of workers of board of public security and justice of the state of GoiasIkegami , Tereza Yoshie 08 August 2014 (has links)
Submitted by Marlene Santos (marlene.bc.ufg@gmail.com) on 2016-08-30T18:34:53Z
No. of bitstreams: 2
Dissertação - Tereza Yoshie Ikegami - 2014.pdf: 4173121 bytes, checksum: 40f69d0a256dfd9171932287659d381f (MD5)
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2016-08-31T13:07:31Z (GMT) No. of bitstreams: 2
Dissertação - Tereza Yoshie Ikegami - 2014.pdf: 4173121 bytes, checksum: 40f69d0a256dfd9171932287659d381f (MD5)
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2016-08-31T13:07:31Z (GMT). No. of bitstreams: 2
Dissertação - Tereza Yoshie Ikegami - 2014.pdf: 4173121 bytes, checksum: 40f69d0a256dfd9171932287659d381f (MD5)
license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)
Previous issue date: 2014-08-08 / Outro / The purpose of this study was to assess QOL (quality of life) of workers of Board of Public Security and Justice of the State of Goias, Brazil, and to identify the socio-demographic and occupational variables that may influence their QOL. This is an epidemiological cross-sectional study, conducted in the metropolitan region and countryside municipalities of the state. The institutions studied were the Military Police (MP), the Firefighting Brigade (FB), the Civilian Police (CP) and the Technical and Scientific Police (TSP). Data were collected using the World Health Organization Quality of Life Instrument Bref (Whoqol-bref) and a questionnaire with socio-demographic and occupational variables of interest. Data analysis was conducted using the Statistical Package for Social Sciences (SPSS), version 18.0. Descriptive statistics and measures of central tendency were calculated for the variables of interest. To evaluate the association between explanatory variables and the QOL scores (and their domains), the non-parametric Mann-Whitney and Kruskal-Wallis tests were used with p<5%. Of 1.039 workers (356 of MP, 275 of FB, 188 of CP and 203 of TSP), 78.1% were male, the predominant age was 31-50 years old; 76.4% were married or in a stable relationship. Regarding length of working in public service, 57.3% had been working up to 15 years. Of the 1.039 respondents, 62.4% were in field work activities. The scores of overall QOL and of the physical, psychological and social domains were very good; as for the environmental domain, the scores were good. The following variables were statistically significant for a better QOL: being married, working at countryside municipalities, field work activities and exercising regularly. The following variables were associated with a worse QOL: being female and having a sick family member. Good scores of QOL means offering the minimum conditions for individuals to develop the maximum of their potential to live, feel, love, work and produce. / A finalidade deste estudo foi avaliar a qualidade de vida (QV) dos trabalhadores da Secretaria de Segurança Pública e Justiça do Estado de Goiás (SSPJGO) e identificar as variáveis sociodemográficas e ocupacionais que podem influenciar a QV destes servidores. Trata-se de um estudo epidemiológico transversal, realizado nas instituições de segurança pública (ISP) da região metropolitana e cidades do interior do estado de Goiás. As instituições estudadas foram: a Polícia Militar (PM), o Corpo de Bombeiros Militar (CBM), a Polícia Civil (PC) e a Superintendência de Polícia Técnico-Científica (SPTC). Os dados foram coletados usando o instrumento abreviado de avaliação da QV da Organização Mundial da Saúde – World Health Organization Quality of Life Instrument bref (Whoqol-bref) – e um questionário com as variáveis sociodemográficas e ocupacionais de interesse. Realizou-se estatística descritiva, com medidas de tendência central, para as variáveis de interesse. Para avaliar a associação entre variáveis de interesse e os escores da QV geral e dos seus domínios, foram utilizados os testes não paramétricos de Mann-Whitney e Kruskal-Wallis, com p<5%. A amostra foi constituída de 1.039 servidores, sendo 356 da PM, 275 do CBM, 188 da PC e 203 da SPTC; com 78,1% homens; predominando as faixas etárias de 31 a 50 anos; 76,4% referiram ser casados ou em união estável. Com relação ao tempo de trabalho no serviço público, 57,3% dos servidores tinham até 15 anos. Dos 1.039 respondentes, 62,4% está em atividade operacional. Os escores da QV geral e nos domínios físico, psicológico e social foram muito bons e, no domínio ambiental, bom. As variáveis que apresentaram diferença estatisticamente significativa para uma melhor QV foram: ser casado, estar lotado no interior, trabalhar em atividade operacional e praticar atividade física regular. As seguintes variáveis tiveram associação estatisticamente significativa para pior QV dos servidores estudados: ser do sexo feminino, ter algum familiar doente e trabalhar em escalas extras. Os níveis dos escores da QV, considerados bons, significam uma QV que oferece o mínimo de condições para que os indivíduos possam desenvolver o máximo de suas potencialidades de viver, sentir, amar, trabalhar e produzir.
|
26 |
Analýza spokojenosti zaměstnanců Hasičského záchranného sboru ČR se zaměřením na motivaci a stabilitu pracovníků / Analyst of employee'contentment of Czech Republic Fire Brigade with a view to motivation and stability of employeesSolničková, Eva January 2008 (has links)
The thesis is focused on contentment determination of Czech Republic Fire Brigade members. Basic ideas concerning work motivation and satisfaction are defined in theoretical part of the thesis followed by characterised work-satisfying factors. There are brief characteristics of survey object and analyst of research results in empirical part. In the final part of thesis are presented improvement suggestions for increasing satisfaction with job.
|
27 |
Struktur- och kostnadsanalys av en slakarmerad plattrambros farbana : En jämförelse ur ett spännviddsperspektivKhalil, Murtazah January 2014 (has links)
En brotyp som är vanlig bland brokonstruktioner är plattrambron. Denna brotyp byggs både med slak- och spännarmering. Det är dock vanligare att bygga med slakarmering än spännarmering, vilket övervägs särskilt då spännvidderna är ungefär 25- 30 meter eller mer. Inledningsvis har en noggrann litteraturstudie genomförts tillsammans med en intervju av en kunnig brokonstruktör för att säkerställa en interaktion mellan teori och aktuell praxis. Detta arbete har haft ett huvudmål, vilket är att ur ett struktur- och kostnadsperspektiv jämföra och utvärdera hur behovet av slakarmering varierar i en plattrambros farbana då spännvidder varieras och betongtvärsnitt ändras. Arbetet har utförts med hjälp av finita elementprogrammet ”Brigade Standard”, vilket erbjuder en tre-dimensionell strukturanalys. Fyra olika tvärsnitt för spännvidder mellan 10-20 meter analyseras. Dimensioner på brodelar bestäms med hjälp av tumregler samt generella råd från intervjuperson; höjd i fält enligt L/20, L/25, L/30 samt L/35, där L är spännvidden. Resultatet visar främst att för ökade spännvidder mot 20 meter ökar lasteffekten på grund av egentyngd drastiskt och då särskilt det tvärsnitt som är störst, det vill säga L/20. Vidare visas även att slankare tvärsnitt resulterar i aningen högre armeringsmängd. Dock påverkas betongkostnaden i större utsträckning av slankare tvärsnitt och särskilt större spännvidder. Även om större spännvidd och slankare tvärsnitt föranleder ett större armeringsbehov, fås en lägre totalkostnad. Det bör noteras att priset på betong och stål är starkt beroende av konjunktur och tillgång till material. Denna studie kan bli ännu intressantare då priset varierar kraftigt för stål och föranleder att betongpriset blir mindre dominerande än vad det är idag. Huvudprodukten från detta arbete är att med hjälp av tabeller och nya priser kunna beräkna en preliminär totalkostnad för plattrambrons farbana för olika spännvidder och hur olika tvärsnittsalternativ påverkar denna kostnad.
|
28 |
Study of Scalability in a Robot Swarm Performance and Demonstration of Superlinear Performance in Conveyor Bucket Brigades and Collaborative PullingAdhikari, Shirshak January 2021 (has links)
No description available.
|
29 |
Precision i modellering av bågbro i stålSörensen, Johanna, Wenne, Emma January 2018 (has links)
Infrastrukturen i Sverige åldras, uppskattningsvis finns det drygt 2000 broar i landet som är 70 år eller äldre. Det finns flera aspekter att titta på för att utvärdera äldre broars kondition och FE modellering är ett vanligt verktyg som används vid utvärdering. För stålbroar är det ofta utmattning som sätter gränsen för hur länge de kan hållas i drift under säkra förhållanden. Syftet med arbetet var att utvärdera nyttan av FE modeller med olika precision med hänsyn till noggrannheten i deras genererade resultat och kostnad. En stålbro har studerats i detalj, Gamla Lidingöbron och specifikt två punkter på dess bågspann. Ritningar av bron och mätdata från forskningsprojektet \textit{Smart tillståndsbedömning, övervakning och förvaltning av kritiska broar} har legat till grund för arbetet. Mätdata utgjordes av tidshistorier över spänningsvariationer i de två studerade punkterna vid flertalet tågpassager över bron. Punkterna finns på bågspannets sekundära bärverk. Fyra modeller har skapats i BRIGADE/Plus med olika precisionsgrad och spänningshistorier för de studerade punkterna har genererats. Spänningshistorierna har sedan utvärderas med Palmgren-Miners delskadeteori för utmattning. Den förväntade ekonomiska nyttan för varje modell har uppskattats beroende av analyskostnad, sannolikheten för utmattningsbrott samt kostnad för ett eventuellt brott. På grund av brons strukturella verkningssätt blev de förenklade modellernas utmattningsresultat mycket lika resultaten från modellen med hög precisionsgrad. De verkliga axellasterna var mindre än de dimensionerande som användes i modellerna. Detta ledde till att de uppkomna spänningarna i stålet från modellerna blev större än de verkliga, men visade ett liknande beteende. Resultatet blev att modellernas utmattningskapacitet enbart utgjorde ca en femtedel av kapaciteten enligt mätningarna. Resultatet från beräkningen av den förväntade nyttan visade att det inte är ekonomiskt motiverat att använda en modell med hög precision framför en eller flera förenklade modeller. Slutsatsen blev att hög precision i en teoretisk modell inte entydigt är bättre än en förenklad modell. Arbetet har utförts vid institutionen för bro och stålbyggnad på KTH i samarbete med Sweco Civil AB. / The infrastructure in Sweden is aging. More than 2 000 bridges in the country are 70 years or older. When assessing the condition of older bridges, several aspects should be taken into account. FE modeling is one common tool to use in a bridge assessment. Fatigue is generally what limits the service life of steel bridges. The aim of this work was to evaluate the utility of higher precision in FE models, regarding the accuracy of their generated results and costs. One steel bridge has been studied in detail, Old Lidingö Bridge and specifically two points on its arc span. Drawings of the bridge and measurement data from the research project \textit{Smart Condition Assessment, Surveillance and Management of Critical Bridges} has provided the basis of this work. Measurement data has been collected from the two selected points on the bridge with strain gauges, registering the time history of the variations in tension during train passages on the bridge. Four models with different levels of precision have been created in BRIGADE/Plus. These models have generated time histories of the varying tension during train passages. The time histories have been evaluated with Palmgren-Miner's cumulative damage model for fatigue. The expected economic utility of each set of models has been estimated based on the cost of the analysis, the likelihood failure caused by fatigue and the cost of failure. Because of the structural behavior of the bridge, the results of the simplified models became very similar to the results of the high precision model. The actual axle loads were less than the design loads used in the models. Because of this, the calculated tensions in the models became larger than the actual tensions. This also resulted in the fatigue capacity of the models only being about one fifth of the capacity according to the measurements. The calculation of the expected utility showed that it is not economically justified to use a model with higher precision over models with less precision. High precision in a theoretical model is not unambiguously better than a simplified model. The work has been carried out at the Department of Structural engineering and bridges at KTH in cooperation with Sweco Civil AB.
|
30 |
Systemanalys av plattbroar : En jämförelse inom FE-modellering och balk-/platteori / System analysis of slab bridges : A comparison regarding FE-modeling between plate- and beam theoryÖberg, Lukas, Lindahl, Mikael January 2018 (has links)
Abstract When Eurocodes was introduced, there was a requirement where the calculations had to take into consideration whether it's a slab or beam bridge. This means that calculations had to be made with softwares including plate theory. The object of this study is a slab bridge with endshields. The bridge is 66.95 meters long with a 14.38-meter-wide deck made of concrete. The deck is mounted on abutments with bearings and intermediate supports where the columns are fixed to the deck. The purpose of this study is to investigate if bridges defined as plates can be calculated using beam theory, as well as examining different modeling techniques in an attempt to evaluate how this will affect the results. A model using shell elements is established in BRIGADE/Plus and compared to a model in Strip Step 3 made out of beam elements. A base-model is also created in BRIGADE/Plus and is compared to the following modeling changes: Couplings between supports and the plate, “point to surface” or “point to point”. The bridge is modeled without wings to study the impact of the wings. The bridge is modeled without columns to study the impact of the columns. When comparing the values obtained from the two different software’s regarding deadweight, the results were almost identical. This indicates that Strip Step 3 is a suitable tool for verifying models made in BRIGADE/Plus. When studying the results from load-combination 6.10.b (the combination used for dimensioning) small differences can be seen between the softwares. This concludes that it may be reasonable to use Strip Step 3 for this type of bridges. However, there are major differences between the software at the traffic load which should be considered. In order to simplify the modeling process ties between points (nodes) should be used. However, the results obtained over the supports must be ignored due to unrealistic values. When studying the impact of wings/columns it was confirmed that a difference of 10 % appeared. Modeling without wings/columns is not more time efficient either, with that in mind wings and columns should be used when modeling. Keywords: Plate theory, Beam theory, Strip Step 3, BRIGADE/Plus, FE-modeling / Sammanfattning Vid införandet av Eurokoder ställdes det krav från Trafikverket där beräkningsmodellen var tvungen att ta hänsyn till verkningssättet i sin helhet dvs. om det är en platt- eller balkbro (E. Rosell, Trafikverket, personlig kommunikation, 3 Maj, 2018). Detta innebar att beräkningsmodeller för plattbroar behövdes utföras med program som kan hantera beräkningar enligt platteori. Studieobjektet för detta arbete är en plattbro med ändskärmar. Bron är 66.95 meter lång med en brobaneplatta av betong som har bredden 14.38 meter. Plattan är upplagd på ändstöd med rörliga lager samt mellanstöd där pelare är fast inspända till plattan. Syftet med detta arbete är att undersöka huruvida broar definierade som plattor går att beräkna enligt balkteori, samt att undersöka olika modelleringstekniker i ett försök att utvärdera hur det påverkar resultaten. En modell med skalelement har upprättats i BRIGADE/Plus som jämförs mot en modell i Strip Step 3 utförd av balkelement. En grundmodell skapas även i BRIGADE/Plus som jämförs mot följande modelleringsändringar: Stöd kopplade mellan två punkter jämförs mot koppling mellan pelare och yta i plattan. Bron modelleras utan vingar för att studera vingarnas inverkan. Bron modelleras utan pelare för att studera pelarnas inverkan. Kontrollen av egentyngd visade nästintill identiska resultat vilket tyder på att Strip Step 3 är ett lämpligt verktyg vid verifiering av Brigademodeller. Vid lastkombination 6.10.b (den dimensionerande lastkombinationen för denna bro) uppstår små skillnader. Detta indikerar att det kan vara rimligt att använda sig av Strip Step 3 vid dessa typer av broar. Dock uppstår det stora skillnader mellan programvarorna vid trafiklasten vilket bör beaktas. För att förenkla modelleringen bör kopplingar mellan punkter användas, dock måste resultat som erhålls över stöd bortses från då dessa ger orealistiska resultat. Vid modellering utan pelare/vingar kan det konstateras att värdena skiljer sig ca 10 %. Det är inte heller mycket mer tidseffektivt att ta bort pelare/vingar då dessa går relativt fort att modellera. Nyckelord: Platteori, Balkteori, Strip Step 3, BRIGADE/Plus, FE-modellering
|
Page generated in 0.0443 seconds