摘要
首先实测分析了邻近地铁线路的拟建建筑物场地的环境振动,然后将实测得到的振动时程作为激励,研究了特殊功能房间的环境振动响应,结果显示虽然离地铁线路20m处环境振动水平并没有超过标准的规定,但是振动传播到特殊功能房间时却超出了标准的限值,需要进行隔振。接着对该功能房间进行浮置楼板隔振设计和分析,结果表明,合理设计的浮置楼板系统可以有效地降低地铁环境振动11dB,从而达到建筑的功能要求。
The subway-induced environment vibration was measured on location where the building would to be built.Then the structural responses under the vibration time history obtained from measure was investigated.It shows that floor environment level is beyond the limits of code,although measured vibration level satisfies the limits of code.So isolation is needed.And float flat system was introduced and designed to minimize the vibration.According to the analysis results,resonable design of float flat system can decrease the vibration about 11dB.
出处
《建筑结构》
CSCD
北大核心
2010年第10期78-81,共4页
Building Structure
基金
陕西省教育厅基金项目(09JK535)
