大岗山拱坝考虑阻尼器抗震措施的非线性动力反应分析

Nonlinear dynamic analysis of Dagangshan arch dam with considering damper reinforcement

本文在已有的拱坝非线性动力分析程序ADAP-88中加入阻尼器模型,开发完成了可考虑阻尼器抗震加固措施的数值分析程序,并将该程序应用于大岗山拱坝的非线性动力反应分析中。研究表明,阻尼器抗震措施对控制高拱坝在强震作用下的横缝张开度有一定的效果,但对坝体应力的分布规律和量值影响不大。

A numerical model is developed based on the arch dam nonlinear dynamic analysis program ADAP - 88 to simulate the strengthening performance of damper measurers installed in arch dams. With this program, analyses have been carried out on nonlinear dynamic responses of Dagangshan arch dam. The results illustrate that damper reinforcing measurers can only be functional to reduce contraction joint opening of the arch dam during strong earthquake, but it appears to have insufficient effect on the distribution of dam stresses.