旧桥加固设计的可靠度反问题分析

将可靠度的反问题理论引入到桥梁加固设计中,通过可靠度的反问题分析,对给定可靠度指标的服役桥梁反求出其需要达到的抗力标准值,讨论了不同加固方案下桥梁后续服役期可靠度指标的变化。将该方法与一般的加固设计的结果做比较,结果表明采用该方法的计算结果较为合理,可以为服役桥梁的加固设计提供一个定量分析的指标。

nalysis on Inverse Reliability Problem of Old Bridge Reinforcing Design

In this paper, the inverse problem of reliability theory is introduced to the reinforcing design of bridge, and through inverse problem analysis of reliability, the reliability index of existing bridge is given, and the standard value of resisting force of the bridge is derived reversely from its reliability index. Moreover, a variety of the relia bility index of the bridge is discusses by the different reinforcing schemes. After the comparison of this method and the general reinforcing design, the result shows that this method of calculation is reasonable and can r provide a quantitative analysis index for the reinforcing design of the existing bridges.