快速轨道交通运行引起的场地振动反应分析  

Response Analysis of Ground Vibration Induced by Rapid Rail Transit

作　　者：陈国兴[1] 陈斌[1,2] 苏晓梅[1] 

机构地区：[1]南京工业大学土木工程学院,南京210009 [2]绍兴市人防工程质量监督管理站,浙江绍兴312000

出　　处：《防灾减灾工程学报》2008年第4期454-461,467,共9页Journal of Disaster Prevention and Mitigation Engineering

基　　金：江苏省六大人才高峰资助计划(06-F-008);江苏省自然科学基金重点项目(BK2006702)资助

摘　　要：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 modern society of highly development of transportation,the environmental vibration induced by rapid rail transit has set off more and more close attention and researches.Vibration responses of typical sites in Nanjing city induced by rapid rail transit are analyzed with the software ABAQUS.Based on the load model of irregularly track geometric condition and the nonlinear dynamic visco-elasto-plastic constitutive model of Davidenkov skeleton curve of the soils,the responses of ground surface vibration with different train speeds for typical sites in Nanjing city are analyzed to obtain the frequency character of vibration and acceleration intensity of ground surface vibration as well as their attenuating law,which are basic data to further research on the control of ground surface vibration induced by rapid rail transit.

关 键 词：快速轨道交通 地表振动 土体动粘弹塑性本构模型 

分 类 号：TU435[建筑科学—岩土工程]