横系梁设置对双柱墩抗震性能的影响分析

为了研究横系梁设置对有盖梁双柱墩的抗震性能影响,采用OpenSEES软件中非线性纤维单元建立有盖梁双柱墩有限元模型,并基于拟静力分析方法对有无横系梁两种双柱墩进行对比分析.结果表明,采用OpenSEES软件中非线性纤维单元可准确、有效地模拟钢筋混凝土框架拟静力试验,在横向往复荷载作用下,双柱墩设置横系梁可降低墩顶和墩底的弯矩值,提高双柱墩的等效黏结阻尼系数.设置横系梁可提高有盖梁双柱墩的承载能力,从而增强其耗能效果.

Analysis for influence of transverse beam settings on anti-seismic performance of double-column piers

In order to study the influence of transverse beam settings on the anti-seismic performance of the double-column pier with bent cap, a finite element model of nonlinear fiber unit from OpenSEES software for the double-column piers with bent cap was established. In terms of the quasi-static analysis method, a comparative analysis for the double-column piers with and without bent cap was performed. The results show that the quasi-static test of steel concrete frame can be accurately and effectively simulated with the nonlinear fiber unit from OpenSEES software. Under the influence of transverse reciprocating load, the double-column piers with transverse beam can reduce the bending moment value of pier top and pier bottom, and can improve the damping coefficient of equivalent cementation. The carrying capacity of double-column piers with bent cap can be enhanced through transverse beam settings, and the energy consumption effect can be improved accordingly.