基于中美桥梁规范设计的预应力混凝土连续梁桥确定性及可靠性对比分析

发布时间：2018-01-23 13:22

本文关键词： 中国规范美国规范作用作用效应作用效应组合承载能力可靠度可靠指标安全系数　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文针对基于中国桥梁规范设计的预应力混凝土连续梁桥的差异性问题,结合当前桥梁结构分析和结构可靠度理论的最新进展,从适用于工程实际和科研创新的角度出发,从以下几方面进行了研究。1.基于已有的中美桥梁规范对比的研究成果,采用有限元计算作用、作用效应组合及结构抗力的大小;2.基于结构可靠性评估已有研究成果的归纳分析,采用定性与定量相结合的方法,构建结构的功能函数,并进行基于中美桥梁规范设计结果的对比分析;3.以一次落架施工的预应力混凝土连续梁桥为研究对象,确定性对比方面计算内容包括以下几项:永久作用效应、可变作用效应、作用效应组合和正截面抗弯承载能力,可靠性主要针对的正截面的抗弯承载能力安全性从可靠性方面进行评估,确定性与可靠性方面对比分析了安全系数与可靠指标的关系。
[Abstract]:Aiming at the difference of prestressed concrete continuous beam bridges based on Chinese bridge code, this paper combines the latest development of bridge structure analysis and structural reliability theory. From the point of view of engineering practice and scientific research innovation, the following aspects have been studied. 1. Based on the existing research results of bridge code comparison between China and the United States, the finite element method is used. The combination of action effect and the magnitude of structural resistance; 2. Based on the inductive analysis of the existing research results of structural reliability assessment, the function function of the structure is constructed by combining qualitative and quantitative methods, and the comparative analysis based on the design results of Chinese and American bridge code is carried out. 3. Taking the prestressed concrete continuous beam bridge as the research object, the deterministic comparison includes the following items: permanent effect and variable action effect. The combination of action effect and flexural bearing capacity of normal section, the reliability is mainly aimed at the safety of flexural bearing capacity of normal section from the aspect of reliability. The relationship between the safety factor and the reliability index is compared and analyzed in terms of certainty and reliability.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U442.5

【共引文献】