基坑旋挖钻进振动对周边建筑及环境影响规律研究  

Research on Influence Laws of Vibration by Rotary Drilling During Foundation Excavation on Surrounding Buildings and the Environment

作　　者：胡贵博 吕岸霖 张凯 王志新 唐超华 朱建波 HU Guibo;LYU Anlin;ZHANG Kai;WANG Zhixin;TANG Chaohua;ZHU Jianbo(Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization,Shenzhen 518060,China;Institute of Deep Earth Sciences and Green Energy,College of Civil and Transportation Engineering,Shenzhen University,Shenzhen,518060,China;China Railway 16th Bureau Group Co.,Ltd.,Beijing 100018,China;Shenzhen Municipal Design and Research Institute,Shenzhen Co.,Ltd.,518029,China)

机构地区：[1]广东省深地科学与地热能开发利用重点实验室,广东深圳518060 [2]深圳大学深地科学与绿色能源研究院,广东深圳518060 [3]中铁十六局集团有限公司,北京100018 [4]深圳市市政设计研究院有限公司政院,广东深圳518029

出　　处：《工业建筑》2024年第11期226-233,共8页Industrial Construction

基　　金：广东省“珠江计划”创新创业团队项目(2019ZT08G315);国家自然科学基金面上基金项目(51974197);深圳市科创委基础研究面上项目(JCYJ20210324093402006)。

摘　　要：为研究基坑旋挖钻进施工振动对周边建筑及环境的影响,以深圳地铁16号线5号综合井工程为依托,对基坑旋挖钻进施工过程中周边地表及建筑物的振动进行现场监测,通过对监测振动数据的时域、频域分析,得出:旋挖钻进引发的周边地表及建筑振动以竖向为主;楼板质点的竖向峰值振动速度及振动加速度级整体随楼层升高呈线性增长趋势;振动加速度三分之一倍频程谱中,竖向振动最大加速度随楼层升高呈增长趋势;由旋挖钻进引发的楼板水平向振动和竖向振动以低中频为主,主要集中在4~40 Hz;周边建筑内水平向和竖向振动最大加速度所对应的中心频率范围为8~25 Hz;除建筑物楼顶测点及周边地表测点处竖向振级最大值大于75 dB以外,其他测点处竖向振级最大值均低于75 dB。研究成果对于基坑旋挖钻进施工振动对周边建筑物及环境的影响分析具有一定的指导意义。To study the influence law of vibration induced by rotary drilling during foundation excavation on surrounding buildings and the environment,the vibration of the adjacent ground and buildings were monitored under construction of rotary drilling for foundation excavation of the comprehensive well 5 in Shenzhen metro line 16.The following main conclusions were drawn based on time and frequency domain analysis on the field-recorded vibration data.Firstly,the vertical vibration of surrounding buildings caused by rotary drilling was stronger than horizontal vibration.Secondly,the vertical peak particle velocity(PPV)and the vertical vibration acceleration level on the floor of adjacent buildings linearly increased as the floor rosed.Thirdly,in the one-third octave spectrum of vibration acceleration,the maximum vibration acceleration in the vertical direction increased with the increase in the floor.The floor vibration in vertical and horizontal directions caused by rotary drilling was mainly in low and medium frequencies,mainly concentrated in 4 to 40 Hz.And the range of center frequency corresponding to the horizontal and vertical peak vibration acceleration of the nearby buildings was in 8 to 25 Hz.Finally,except the maximum vertical vibration level on the roof and the surrounding ground were larger than 75 dB,the maximum vertical vibration level measured at other observation points was below 75 dB.The relevant findings were of guiding significance for analysis of the impact of vibration induced by rotary drilling on surrounding buildings and the environment.To study the influence law of vibration induced by rotary drilling of foundation pit on surrounding buildings and environment,the vibration of adjacent ground and buildings were monitored during the rotary excavation of the foundation pit of the No.5 comprehensive well of Shenzhen Metro Line 16.The following main conclusions are drawn based on time and frequency domain analysis of the field-recorded vibration data.Firstly,the vertical vibration of surrounding bui

关 键 词：旋挖钻进 振动 质点峰值振动速度 最大竖向振级 振动传播规律 

分 类 号：U231.3[交通运输工程—道路与铁道工程]