塌落振动作用下建筑结构动力响应研究及评估  

Study and Evaluation of Dynamic Response of Building Structure Under Collapse Vibration

作　　者：刘开放 刘彦辉 徐丽 贾永胜 姚颖康[3,4] 周福霖 LIU Kaifang;LIU Yanhui;XU Li;JIA Yongsheng;YAO Yingkang;ZHOU Fulin(College of Civil Engineering,Xi'an University of Architecture and Technology Xi'an,710055,China;Earthquake Engineering Research and Test Center,Guangzhou University Guangzhou,510415,China;Hubei Key Laboratory of Explosion Engineering,Jianghan University Wuhan,430056,China;Wuhan Blasting Co.,Ltd.Wuhan,430056,China)

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]广州大学工程抗震研究中心,广州510415 [3]江汉大学爆炸工程湖北省重点实验室,武汉430056 [4]武汉爆破有限公司,武汉430056

出　　处：《振动．测试与诊断》2022年第4期695-702,824,825,共10页Journal of Vibration,Measurement & Diagnosis

基　　金：广东省高校创新团队资助项目(2016KCXTD016)。

摘　　要：以某工程为研究对象,开展了一系列塌落振动现场监测,进行了塌落振动对周围建筑结构动力影响研究及评估。首先,通过对实时监测的周边测点数据进行分析,研究塌落振动的传播规律;其次,将测点的加速度作为动力荷载加载到有限元模型,讨论框架结构在不同距离振动波作用下的动力响应及其对楼层的影响规律,并将水平和竖向加速度进行倍频程谱分析,获得1/3倍频程;最后,以振动加速度级为基准,进行结构的振动分析及评估。结果表明,塌落振动作用下周边建筑结构动力强度随振动波的距离增大而减小,随着层数的增加,响应呈放大趋势,且竖向振动均大于水平向振动。Taking a certain project as the research object,a series of on-site monitoring of collapse vibration were carried out,and the dynamic impact of collapse vibration on surrounding buildings was studied and evalu⁃ated.Firstly,the propagation law of collapse vibration was studied by analyzing the surrounding monitoring da⁃ta of real-time monitoring points.Secondly,the acceleration of the measured point is loaded into the finite ele⁃ment model as a dynamic load.The dynamic response of the frame structure under the action of vibration waves at different distances and its influence on the floor are discussed.The octave spectrum analysis of horizontal and vertical accelerations is carried out to obtain 1/3 octave.Based on the vibration acceleration level,the structural vibration analysis and evaluation are carried out.Results show that the dynamic strength of the surrounding building structure decreases with the increase of the distance of the vibration wave.Moreover,the response tends to enlarge with the increase of the floor number,and the vertical vibration was greater than the horizontal vibration.

关 键 词：爆破拆除 塌落振动 振动波 倍频程谱分析 振动分析与评估 

分 类 号：O329[理学—一般力学与力学基础] TD235[理学—力学] TH113[矿业工程—矿井建设]