本文選題：簡支變連續(xù)　切入點：T型梁　出處：《重慶交通大學》2014年碩士論文　論文類型：學位論文

【摘要】：先簡支后連續(xù)T型梁橋在高速公路中廣泛應用，施工簡便、經(jīng)濟效應好得到了人們的認可。在其空間受力的分析還較為缺乏，先簡支后連續(xù)體系計算還沒有相應的統(tǒng)一規(guī)范。本文以成渝復線上先簡支后連續(xù)T型梁橋（跳墩河中橋、小重慶大橋、劉家灣大橋）為工程背景，分析在一定橋面寬度不同跨徑橋梁在空間受力分析規(guī)律。本論主要研究內(nèi)容及方法： 本文針對當今高速公路對行車質(zhì)量的要求提高以及橋梁設計和建設的快速發(fā)展，提出了在工程中先簡支后連續(xù)梁橋運用的重要性，，簡述了國內(nèi)外此類橋梁發(fā)展歷程以及發(fā)展現(xiàn)狀，敘述了此類橋梁結(jié)構(gòu)的優(yōu)缺點。 對目前分析荷載橫向分布系數(shù)的方法歸納總結(jié)，運用適合本文研究橋梁的方法計算不同跨徑T梁橋跨中的荷載橫向分布系數(shù)。 建立簡支變連續(xù)T型梁橋的有限元模型，計算在荷載作用下各片梁的橫向分布系數(shù)。 利用實測數(shù)據(jù)，與傳統(tǒng)理論方法、模型計算的橫向分布系數(shù)進行對比分析。
[Abstract]:Simply supported and then continuous T-beam bridges are widely used in expressway, which is easy to construct and has good economic effect. There is no corresponding unified specification for the calculation of simple support and then continuous system. In this paper, the engineering background is simply supported and then continuous T-beam bridge (middle bridge of Xiudun River, small Chongqing Bridge, Liujiawan Bridge) on Chengdu-Chongqing double Line. This paper analyzes the law of spatial stress analysis of bridges with different spans at a certain deck width. The main contents and methods of this study are as follows:. In view of the improvement of highway quality and the rapid development of bridge design and construction, this paper puts forward the importance of using simple support and then continuous beam bridge in engineering. The development history and present situation of this kind of bridge at home and abroad are briefly described, and the advantages and disadvantages of this kind of bridge structure are described. In this paper, the method of analyzing the transverse distribution coefficient of load is summarized, and the load transverse distribution coefficient of T-beam bridge with different span is calculated by using the method suitable for the study of bridge in this paper. The finite element model of simply supported variable continuous T-beam bridge is established, and the transverse distribution coefficient of each beam under load is calculated. By using the measured data, the transverse distribution coefficient calculated by the model is compared with the traditional theoretical method.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U448.21;U441

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