作　　者： ; ; ;

机构地区： 佛山科学技术学院环境与土木建筑学院土木工程与建筑系

出　　处： 《佛山科学技术学院学报（自然科学版）》 2013年第3期11-17,共7页

摘　　要： 基于数值仿真原理,采用非线性有限元软件ANSYS/LS-DYNA,对桥墩碰撞在多参数影响下的水平位移进行了仿真计算。考虑了材料非线性、几何非线性和接触非线性,建立了桥墩碰撞有限元模型,分析了桥墩在水平撞击荷载作用下的变形响应特征,并运用参数化分析方法,研究桥墩的混凝土轴心抗压强度、纵向钢筋配筋率、箍筋配箍率和截面惯性矩等参数对其在水平撞击荷载作用下变形响应的影响。结果表明:增大桥墩的混凝土轴心抗压强度、截面惯性矩和箍筋配箍率,均能不同程度地减小桥墩在水平撞击荷载作用下中截面的最大位移和残余位移,增强桥墩的抗撞击性能;而纵向钢筋配筋率对位移影响较小。 In light of the numerical simulation theory, we used the non-linear finite element software ANSYS/LS-DYNA to carry out a multiple parameter based research on the horizontal displacement of the pier collision. We set up a finite element model which was based on the material, the geometric and the contact non-linearity to analyze the deformation response characteristics of the pier when horizontally collided and used the method of the parametric analysis to study the impact of the concrete axial compressive strength, the longitudinal and the transverse reinforcement ratio and the section inertia on the pier when horizontally collided. The results indicated that both the increase of the moment of concrete strength and the increase of the section inertia and transverse reinforcement ratio can dramatically decrease the impact of horizontal collision while the longitudinal reinforcement ratio has less impact on the displacement.

关 键 词： 桥墩碰撞 仿真计算 参数化 水平位移

领　　域： [建筑科学] [交通运输工程]