本文選題：矮塔斜拉橋 + 優(yōu)化設(shè)計��； 參考：《合肥工業(yè)大學(xué)》2014年碩士論文

【摘要】：矮塔斜拉橋又稱為部分斜拉橋，是一種較新的橋梁結(jié)構(gòu)形式，彌補了傳統(tǒng)的斜拉橋和連續(xù)梁橋的不足，在中長跨度橋梁中可以很好適用，因此具有很好的發(fā)展前景。由于矮塔斜拉橋在設(shè)計階段考慮的因素眾多，并不能保證設(shè)計出的橋梁結(jié)構(gòu)是最優(yōu)狀態(tài)，因此對橋梁進行優(yōu)化設(shè)計有重要的工程意義，目前常見的矮塔斜拉橋的優(yōu)化設(shè)計主要是針對具體工程，并把最終優(yōu)化結(jié)果運用到具體工程中。 本文也是針對具體工程，，即懷洪新河2#大橋進行研究，首先討論了矮塔斜拉橋的起源和發(fā)展，以及結(jié)構(gòu)特點和設(shè)計要點，然后根據(jù)設(shè)計資料建立有限元分析模型，對橋梁的部分結(jié)構(gòu)參數(shù)進行優(yōu)化設(shè)計研究，主要優(yōu)化的結(jié)構(gòu)參數(shù)有：拉索初張力、主梁無索區(qū)長度以及主塔高度。通過分別對各個結(jié)構(gòu)參數(shù)的單獨考慮，進行優(yōu)化設(shè)計，并且與原設(shè)計的橋梁成橋階段主梁的受力狀態(tài)進行對比分析，得到本工程橋梁的最優(yōu)狀態(tài)，本文優(yōu)化設(shè)計的過程和結(jié)果可以運用于本工程實際施工中，并且可以為以后的矮塔斜拉橋優(yōu)化設(shè)計上提供一定的參考。
[Abstract]:Short tower cable-stayed bridge, also called partial cable-stayed bridge, is a relatively new type of bridge structure, which makes up for the deficiency of traditional cable-stayed bridge and continuous girder bridge, and can be applied well in medium-long span bridges, so it has a good development prospect. Because there are many factors considered in the design phase of the cable-stayed bridge with low tower, it can not guarantee the optimal state of the designed bridge structure, so it is of great engineering significance to optimize the design of the bridge. At present, the common optimization design of the cable-stayed bridge with low tower is mainly aimed at the concrete project, and the final optimization result is applied to the concrete project. In this paper, the origin and development of the cable-stayed bridge with low tower, structural characteristics and design essentials are discussed, and then the finite element analysis model is established according to the design data. The optimum design of some structural parameters of the bridge is studied. The main structural parameters are: the initial tension of the cable, the length of the main beam without cable and the height of the main tower. By considering the individual structural parameters separately, the optimal design is carried out, and the stress state of the main beam in the stage of bridge completion is compared with that of the original design, and the optimal state of the bridge is obtained. The process and results of the optimization design in this paper can be applied to the practical construction of the project, and can provide a certain reference for the optimization design of the cable-stayed bridge with low tower in the future.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U448.27

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