论文部分内容阅读
在运输业高度发达的当今社会,轨道交通运行引起的环境振动已经引起了越来越多的关注和研究。本文以ABAQUS软件为计算平台,基于轨道几何不平顺理论荷载模型,采用基于Davidenkov骨架曲线的非线性动粘弹塑性模型描述土的动力特性,以南京典型场地条件为研究对象,对快速轨道交通运行引起的场地地表振动特性进行了分析,得到了不同列车车速下地表振动的强度、频谱特性及其衰减规律,并分析了场地振动强度的影响因素,为进一步研究和控制快速轨道交通运行引起的地面振动提供了基础性资料。
In today’s highly developed transportation industry, environmental vibrations caused by the operation of rail transit have drawn more and more attention and research. In this paper, ABAQUS software is used as the calculation platform. Based on the theoretical model of orbital irregularities, the nonlinear dynamic viscoelastic-plastic model based on Davidenkov skeleton curve is used to describe the dynamic characteristics of soil. Taking the typical site conditions in Nanjing as the research object, The characteristics of ground surface vibration caused by different train speeds are obtained, and the influencing factors of ground vibration intensity are analyzed. In order to further study and control the ground surface caused by rapid rail transit operation, Vibration provides the basic information.