地铁建筑物内振动环境监测装置测试  

Tests for Vibration Environment Monitoring Device in Certain Building for Operation of Metro

作　　者：彭桂力 梁茵[3] 沈统 李怀良[2] 潘雷[1] PENG Guili;LIANG Yin;SHEN Tong;LI Huailiang;PAN Lei(School of Control and Mechanical Engineering,Tianjin Chengjian University,Tianjin 300381,China;Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory,Southwest University of Science and Technology,Mianyang 621010,China;School of Energy and Safe Engineering,Tianjin Cheng Jian University,Tianjin 300381,China)

机构地区：[1]天津城建大学控制与机械工程学院,天津300381 [2]西南科技大学核废物与环境安全国防重点学科试验室,四川绵阳621010 [3]天津城建大学能源与安全工程学院,天津300381

出　　处：《自动化仪表》2018年第5期55-59,共5页Process Automation Instrumentation

基　　金：国家自然科学基金青年科学基金资助项目(41604153);天津市高等学校科技发展计划基金资助项目(20140527);天津建委科技基金资助项目(2014-46)

摘　　要：为了研究地铁运行过程中振动对地面建筑物的影响,对天津地铁运营时建筑物内振动进行了实测。将振动传感器布置于建筑物不同楼层,尽可能消除环境本底振动,将连续24 h的采集数据通过网络实时传输到监控中心。采用基于频域功率谱密度数值分析方法对振动数据进行处理,得到振动数据的特征频率和振幅规律。实测数据验证了低频段20 Hz以下的振动频率对建筑物存在影响,高频信号对建筑物影响不大。不同楼层所产生的地铁振动数据具有一致性,分析结果初步反映出地铁运行过程中产生的振动规律。这对以后深入研究地铁环境振动问题具有现实意义。In order to study the influence of vibration in the operation process of Tianjin metro line 1 on the buildings on theground,the vibrations inside building were tested.The vibration sensors are arranged on different floors of the building,as much aspossible to eliminated the background vibration of environment,and collect continuously the data in 24 hours,and transmit thedata to the monitoring center via network in real time.The vibration data are processed by using the numerical analysis methodbased on frequency domain power spectrum density,to obtain the characteristic frequency and amplitude regularity of the vibrationdata.The practical test data verify that the building is mainly impacted by low frequency vibration below 20 Hz,while there is lessinfluence under higher frequency.The vibration data obtained are basically consistent from different floors,thus the regular patternduring metro operation can be preliminary analyzed.This has practical significance for researching environmental vibration ofsubways.

关 键 词：振动幅度 地下轨道 环境因素 功率谱 振动频率 振动实测 数据分析 

分 类 号：TH825[机械工程—仪器科学与技术] TP27[机械工程—精密仪器及机械]