本文關鍵詞： 鋼管混凝土拱橋 高性能 優(yōu)化設計 受力性能 荷載試驗 仿真分析　出處：《長安大學》2015年碩士論文　論文類型：學位論文

【摘要】：高性能鋼管混凝土拱橋是隨著高性能鋼和高性能混凝土在鋼管混凝土拱橋中的應用而出現(xiàn)的一種受力性能優(yōu)越、適應性強的鋼管混凝土拱橋。高性能鋼和高性能混凝土的發(fā)展與應用為高性能鋼管混凝土拱橋的發(fā)展奠定了堅實基礎,高性能鋼管混凝土拱橋憑借自身獨特的優(yōu)勢正在向著大跨度方向發(fā)展。高性能鋼管混凝土拱橋以其結構輕巧、適用性強、承載能力大和造型美觀等特點,倍受國內(nèi)外設計者的青睞。高性能鋼管混凝土拱橋的受力性能的基礎性研究仍需不斷完善,故本文開展高性能鋼管混凝土拱橋受力性能與工程應用研究具有重要的研究意義與工程實用價值。本文的主要研究工作如下:1.廣泛調研橋梁用高性能材料以及鋼管混凝土拱橋的研究歷史與現(xiàn)狀,總結分析高性能材料和鋼管混凝土拱橋的受力特點、研究熱點及其工程應用。在既有研究成果基礎上,提出了高性能鋼管混凝土拱橋的主要研究內(nèi)容。2.對高性能鋼管混凝土拱橋受力性能進行了承載能力、穩(wěn)定性、動力特性和疲勞性的基本理論分析及研究總結,并就國內(nèi)相關規(guī)范對承載能力計算公式和影響受力性能的因素進行分析,為本文開展高性能鋼管混凝土拱橋承載能力研究奠定基礎。3.通過總結國內(nèi)外工程經(jīng)驗和試驗研究成果,分析確定影響高性能鋼管混凝土拱橋受力性能的因素;對橋型、矢跨比和截面形式等主要因素進行深入分析,確定了各影響因素參數(shù)的取值范圍。依托兩座高性能鋼管混凝土拱橋工程實例,從設計參數(shù)、結構構造、施工要點等方面對高性能鋼管混凝土拱橋進行深入分析,提出優(yōu)化設計思路、方法和方案,對橋梁的設計和施工提出合理化建議。4.利用Midas/Civil建立有限元模型,對高性能鋼管混凝土拱橋依托工程開展施工階段和成橋階段的靜力和動力特性進行仿真分析。通過仿真分析結果與實橋監(jiān)測結果進行對比,分析了高性能鋼管混凝土拱橋施工階段和成橋狀態(tài)的受力性能;通過實橋靜載試驗和動載試驗,對高性能鋼管混凝土拱橋的受力性能和工作性能進行評價分析。
[Abstract]:With the application of high performance steel and high performance concrete in concrete filled steel tubular arch bridge, high performance concrete filled steel tube arch bridge is a kind of superior mechanical performance. The development and application of high performance steel and high performance concrete have laid a solid foundation for the development of high performance concrete filled steel tube arch bridge. High performance CFST arch bridge is developing towards the direction of long span by virtue of its own unique advantages. High performance CFST arch bridge is characterized by its lightweight structure, strong applicability, large bearing capacity and beautiful shape. The basic research on the mechanical behavior of high performance concrete filled steel tubular arch bridge still needs to be improved. Therefore, it is of great significance and practical value to study the mechanical behavior and engineering application of high performance CFST arch bridge in this paper. The main research work of this paper is as follows:. 1. The history and present situation of high performance material and concrete-filled steel tubular arch bridge are investigated extensively. Summarize and analyze the mechanical characteristics of high performance material and concrete filled steel tube arch bridge, research hot spot and its engineering application. On the basis of existing research results. The main research content of high performance concrete filled steel tube arch bridge is put forward. 2. The bearing capacity and stability of high performance concrete filled steel tube arch bridge are carried out. The basic theoretical analysis and research summary of the dynamic characteristics and fatigue properties, and the analysis of the calculation formula of the bearing capacity and the factors affecting the mechanical performance of the relevant codes in China. It lays a foundation for the research of bearing capacity of high performance concrete-filled steel tubular arch bridge in this paper. Through summing up the engineering experience and experimental research results at home and abroad. The factors influencing the mechanical behavior of high performance CFST arch bridge are analyzed and determined. The main factors, such as bridge type, rise-span ratio and section form, are deeply analyzed, and the value range of each factor parameter is determined. Based on two high performance concrete filled steel tube arch bridge engineering examples, the design parameters and structure construction are analyzed. The main points of construction of high performance concrete-filled steel tube arch bridge are analyzed, and the optimal design ideas, methods and schemes are put forward. Finally, the rational suggestions for the design and construction of the bridge are put forward. 4. The finite element model is established by using Midas/Civil. The static and dynamic characteristics of high performance concrete-filled steel tubular arch bridge during construction and completion stages are simulated and analyzed. The simulation results are compared with the real bridge monitoring results. The mechanical performance of high performance concrete filled steel tube arch bridge in construction stage and completion state is analyzed. Through the static load test and the dynamic load test of the real bridge, the mechanical and working performance of the high performance concrete filled steel tube arch bridge is evaluated and analyzed.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U441;U448.22

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