平面内往复荷载作用下竖向偏心圆形钢桥墩的弹塑性能有限元分析

发布时间：2018-03-22 01:30

本文选题：钢桥墩　切入点：平面内　出处：《地震工程与工程振动》2014年S1期 　论文类型：期刊论文

【摘要】：为探明竖向偏心及混凝土填充补强对钢桥墩抗震性能的影响,本文采用有限元分析软件abaqus对平面内往复荷载作用下的竖向偏心圆形钢桥墩的弹塑性性能进行研究。本文共设计12个件,截面分为圆形的空钢管和在桥墩底部填充一定高度的混凝土圆形钢管两种形式,竖向偏心率分别为0、0.1、0.2。研究表明,具有填充混凝土的钢桥墩在承载力和延性方面较空钢管钢桥墩有明显改善;同时,两种桥墩随着竖向荷载偏心率的增加,平面内的往复滞回性能呈现出明显的不对称性,并且抗震性能也随之较差。
[Abstract]:In order to find out the influence of vertical eccentricity and reinforced concrete on the seismic behavior of steel pier, In this paper, the elastoplastic properties of vertical eccentric circular steel piers under reciprocating loads in plane are studied by using finite element analysis software abaqus. Twelve pieces of steel piers are designed in this paper. The section is divided into two types: round hollow steel pipe and concrete circular steel pipe filled with a certain height at the bottom of the pier. The vertical eccentricity ratio is 0 0. 1 / 0. 2 respectively. The bearing capacity and ductility of steel piers filled with filled concrete are obviously improved than that of steel piers filled with hollow steel tubes, and the reciprocating hysteresis behavior of the two piers in plane shows obvious asymmetry with the increase of eccentricity of vertical load. And the seismic performance is also poor.
【作者单位】：沈阳建筑大学土木工程学院;
【基金】：辽宁省自然科学基金项目(2013020149)
【分类号】：U441;U443.22

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