基于多失效法的梁桥可靠性分析与寿命预测

2010 Ninth International Symposium on Distributed Computing and Applications to Business, Engineering and Science Pub Date : 2010-08-10 DOI:10.1109/DCABES.2010.136

Wang Xiangyang, Z. Pei

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引用次数: 1

摘要

结构可靠度是指结构在规定的条件下，在规定的时间内履行其规定功能的概率，本文采用蒙特卡罗法和响应面法对结构进行可靠度分析，并结合实例，验证了用ANSYS软件进行可靠度分析的可行性，对比表明响应面法的优势。本文以某标准大跨度预应力梁桥为分析对象，分析了结构体系在多种破坏模式下的可靠度及影响因素的敏感性。进一步考虑桥梁抗力随时间衰减，分析了桥梁体系的时变可靠度，并对桥梁的使用寿命进行了预测。

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Reliability Analysis and Life Prediction of Beam Bridge Based on More Failure Method

Structural reliability refers to the probability of structure perform its required functions under stated conditions for a specified period of time, Monte Carlo method and response surface method are used to analyze the structural reliability combine with a example, the feasibility of analyzing reliability with ANSYS software is verified, advantage of response surface method is shown by comparison. Taking a standard long-span prestressed girder bridge for the analysis object, this paper analyzed reliability of structural system in a variety of failure modes and the sensitivity of factors. Further considering the resistance of bridge declined over time, analyzed the time-dependent reliability of bridge system and predicted service life of bridges.

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2010 Ninth International Symposium on Distributed Computing and Applications to Business, Engineering and Science

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