首页|地基和基础对建筑物地铁振动响应影响的研究

地基和基础对建筑物地铁振动响应影响的研究

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随着我国地铁建设的飞速发展和城市用地日益紧缺,建筑物与地铁线路的距离越来越近.对于临近地铁的新建建筑,在设计阶段对于建筑结构开展抑制地铁振动的优化设计渐趋必要.以某临近地铁的待建建筑物为研究对象,采用数值仿真方法,对不同基础形式(桩筏基础和筏板基础)及不同地基类型(非挤土地基和挤土地基)建筑物的地铁振动响应进行对比分析,结果表明:桩筏基础抑制地铁振动的能力略优于筏板基础,基础形式变化对建筑物室外振动的影响不显著,且不会改变建筑物室内振动水平随楼层升高的变化规律,基础形式不同使建筑室内振动分布发生变化,但变化的规律性不显著;非挤土地基抑制地铁振动的能力明显优于挤土地基,地基类型变化亦不会改变建筑物室内振动水平随楼层升高的变化规律,但对建筑室外和室内振动响应的影响都较为显著.
Study on the Influence of Base and Foundation on Subway-induced Vibration Response of Buildings
With the rapid development of subway construction and the increasing shortage of urban land in our country,the distance between buildings and subway lines is getting closer and closer.For new buildings adjacent to the subway,it is increasingly necessary to carry out the optimization design on the building structure to suppress subway-induced vibration in the design stage.In this paper,taking a building to be built adjacent to the subway as the research object,the numerical simulation method is used to analyze and compare the subway-induced vibration response of buildings with different foundation forms(pile-raft foundation and raft foundation)and different base types(non-soil-compacting base and soil-compacting base).The results show that the ability of pile-raft foundation to suppress subway-induced vibration is slightly better than that of raft foundation.The change of foundation forms has no significant effect on outdoor vibration of the building,and it does not alter the variation law of vibration level of each floor with the rise of storey.Different foundation forms can change the indoor vibration distribution of the building,but the regularity of the change is not clear.The ability of non soil-compacting base to suppress subway-induced vibration is significantly better than that of soil-compacting base.The change of base types does not alter the variation law of vibration level of each floor with the rise of storey,but it has an obvious influence on both outdoor and indoor vibration responses of the building.

vibration and wavesubway-induced vibration controlbase and foundationbuilding structurevibration responsenumerical simulation

张婧、宋瑞祥、刘必灯、邬玉斌、吴琼、杨洁

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北京市科学技术研究院 城市安全与环境科学研究所,北京 100054

振动与波 地铁振动控制 地基基础 建筑结构 振动响应 数值仿真

北科青年学者计划(B)资助项目北京市财政科研资助项目北京市财政科研资助项目

YS20210211000022T00000044640811000022T000000468166

2024

10.3969/j.issn.1006-1355.2024.01.038

噪声与振动控制
中国声学学会

噪声与振动控制

CSTPCD北大核心
影响因子：0.622
ISSN：1006-1355
年,卷(期)：2024.44(1)
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