Push-over分析在桥梁抗震性能评价上的研究现状

目前在桥梁抗震性能评价中多倾向于采用非线性时程分析计算桥梁地震响应,但是存在着工作量大,计算复杂等问题。而在基于结构位移/性能的抗震思想下,采用塑性倒塌机构分析(即push-over)方法来评价地震作用下桥梁的抗震性能具有广泛的应用前景。该文就目前push-over分析应用于桥梁抗震性能评价在国内外的研究现状做了归纳总结,并对此做出适当的评价和展望。

Present Situation of Study for Push-over Analysis on Evaluation of Bridge Anti-earthquake Performance

The nonlinear time process analysis is more used in the evaluation of the bridge anti-earthquake performance to calculate the bridge earthquake response now. But there are many problems of large quantity of the work and the complex of the calculation. Under the anti-earthquake thinking based on the structural displacement / performance, the plastic collapsing mechanism analysis (push-over) method is used to evaluate the wide application prospects of the bridge anti-earthquake performance under the earthquake action. The article sums up the present situation of the study for the push-over analysis now applied to evaluate the bridge anti-earthquake performance at home and abroad, and gives the suitable evaluation and forecast for it.