地铁环境中房屋浮置地板隔振分析  

Analysis of Floating Floor Isolation for Subway Induced Vibration

作　　者：李守继[1] 楼梦麟[1] 丁洁民[1] 陆秀丽[1] 

机构地区：[1]同济大学,上海200092

出　　处：《结构工程师》2007年第5期10-14,共5页Structural Engineers

摘　　要：建立并求解分析弹簧支承浮置地板单自由度系统动力学模型,从而判明弹簧隔振的特点;根据振动波的传播和隔振弹簧布置位置要求,确定浮置地板有限单元划分,进而建立浮置地板多自由度系统动力学有限元分析模型,求解浮置地板动力学有限元模型在地铁振动激励下的加速度响应;介绍浮置地板振动评价指标———振动加速度级,利用国家有关标准规定,对浮置地板隔振效果进行评价,从而为地铁环境中建筑物浮置地板隔振设计提供依据。An analytical model of the single degree of freedom system of a floating floor was established. The characteristics of the spring vibration isolation were presented based on the calculation of the analytical model. According to the theory of wave propagation and the location of supporting springs, the size of finite elements was determined and the floating floor was subdivided into a number of finite elements. Therefore, the finite element model of the floating floor was built, and the vibration accelerations of the floating floor were calculated. Vibration acceleration level, the evaluation index of vibration, was introduced. Quantitative evaluation of the efficiency of spring isolation was made, based on the Chinese national standard of limit of vibration.

关 键 词：隔振弹簧 地铁引起的振动 浮置地板 振动加速度级 

分 类 号：TU352.12[建筑科学—结构工程] U231[交通运输工程—道路与铁道工程]