基于可靠度理论的桥梁评估

基于桥梁评估的现状,介绍了桥梁评估的研究成果,阐述了桥梁的可靠度理论的概念、基本参数以及结构可靠度的各种计算方法.从可靠度方面,对某预应力混凝土T梁桥分别利用一次二阶矩中心点法和改进的一次二阶矩法求得可靠性指标,进行安全性评估,并且通过可靠度计算结果对不同计算方法加以对比,并对可靠度理论加以分析.

Evaluation of Bridge Based on Reliability Theory

Based on the present situation of bridge evaluation, this paper introduces the research results of experts. This paper introduces the research results of bridge assessment and describes the concept of re- liability theory, the basic parameters and the bridge structure reliability calculation methods. This paper calculates the reliability index for a pre-stressed concrete T beam bridge by using a two order moment method and the improved one order two moment method from the aspects of reliability respectively and gives their safety assessments. This paper also compares different calculation methods by using reliability calculation method and analvzes the theory of reliability.