爆破地震波作用下框架结构的高程响应分析
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摘要
通过建立爆破地震波作用下框架结构的非线性时程分析方法,对爆破荷载作用下的框架结构进行动力分析,采用现场实测的爆破振动信号,对邻近爆区的厂房结构进行分析。结果表明:建筑物的高度对爆破质点振动速度和位移具有明显的放大作用,而且速度放大效应比位移放大效应大,并确定了由高度差引起的放大系数。
The time-history analysis method of frame structures under blasting seismic wave was set up.Then,the dynamic response of a frame structure under blasting seismic wave was analyzed.According to the field blasting vibration signal,the response of a factory building near the blasting zone was analyzed.The results indicate that the height of the buildings has a amplification on peak particle velocity and displacement.Furthermore,determined the magnification factor caused by height and knew the speed magnification ratio of multiple larger than displacement mag-nification.
The time-history analysis method of frame structures under blasting seismic wave was set up.Then,the dynamic response of a frame structure under blasting seismic wave was analyzed.According to the field blasting vibration signal,the response of a factory building near the blasting zone was analyzed.The results indicate that the height of the buildings has a amplification on peak particle velocity and displacement.Furthermore,determined the magnification factor caused by height and knew the speed magnification ratio of multiple larger than displacement mag-nification.
引文
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[15]于建华,谢用九,魏泳涛.高等结构动力学[M].成都:四川大学出版社,2001.Yu Jianhua,Xie Yongjiu,Wei Yongtao.Advanced structural dy-namics[M].Chengdu:Sichuan University Press,2001.
[2]刘军,吴从师,高全臣.建筑结构对爆破震动的响应预测[J].爆炸与冲击,2000,20(4):333-337.Liu Jun,Wu Congshi,Gao Quanchen.A research on predicting struc-tural responses to blasting vibration[J].Explosion and Shock Wave,2000,20(4):333-337.
[3]龙晓鸿,潘玲,李黎.爆破地震波作用下框架结构与地基基础协同工作时程分析[J].工程抗震与加固改造,2007,29(6):46-49.Long Xiaohong,Pan Ling,Li Li.Time-history analysis of frame struc-ture considered by coordinated action of foundation and soil underblasting seismic wave[J].Earthquake Resistant Engineering andRetrofittin,2007,29(6):46-49.
[4]娄建武.普通民房爆破振动破坏分析[J].爆破,2000,17(4):8-13.Lou Jianwu.Analysis on vibration response and damage of low-riseresidential house caused by blasting[J].Blasting,2000,17(4):8-13.
[5]李廷春,沙小虎,邹强.爆破作用下高边坡的地震效应及控爆减振方法研究[J].爆破,2005,22(1):1-6.Li Tingchun,Sha Xiaohu,Zou Qiang.Seismic effect of high slope un-der the action of blasting load and research on blasting vibration re-duction methods[J].Blasting,2005,22(1):1-6.
[6]曹孝君,张继春,吕和林.频率对爆破地震作用下结构的动力响应的影响研究[J].爆破,2006,23(2):14-19.Cao Xiaojun,Zhang Jichun,LüHelin.Effect of frequency on the dy-namic response of structure resulting from blasting seismic[J].Blas-ting,2006,23(2):14-19.
[7]刘铁林,姜迎春,刘伟.地震作用下高层结构动力响应分析的一种数值方法[J].工程力学,2008,25(S1):175-178.Liu Tielin,Jiang Yingchun,Liu Wei.A numerical method for dynam-ic response analysis of high-rise structures under seismic load[J].Engineering Mechanics,2008,25(S1):175-178.
[8]孙美凤.爆炸荷载作用下饱和土中地下建筑结构的动力响应[J].华北水利水电学院学报,2004,25(2):18-21.Sun Meifeng.The structure dynamical response in saturated soil toblasting loads[J].Journal of North China Institute of Water Conser-vancy and Hydroelectric Power,2004,25(2):18-21.
[9]杜修力,廖维张,田志敏,等.炸药爆炸作用下地下结构的动力响应分析[J].爆炸与冲击,2006,26(5):474-480.Du Xiuli,Liao Weizhang,Tian Zhimin,et al.Dynamic response anal-ysis of underground structures under explosion-induced load[J].Ex-plosion and Shock Waves,2006,26(5):474-480.
[10]夏祥,李俊如,李海波,等.爆破荷载作用下岩体振动特征的数值模拟[J].岩土力学,2005,26(1):50-56.Xia Xiang,Li Junru,Li Haibo,et al.Udec modeling of vibrationcharacteristics of jointed rock mass under explosion[J].Rock andSoil Mechanics,2005,26(1):50-56.
[11]舒大强,赖世骧,朱传云,等.岩石高边坡爆破振动效应观测及分析[J].爆破,2000,17(S1):245-248.Shu Daqiang,Lai Shixiang,Zhu Chuanyun,et al.Analysis of explo-sive vibration effect in rock high slope blasting[J].Blasting,2000,17(S1):245-248.
[12]张涛,郭学彬,蒲传金,等.边坡爆破振动高程效应的实验分析与研究[J].江西有色金属,2006,20(4):10-13.Zhang Tao,Guo Xuebin,Pu Chuanjin,et al.Experimental analysisand studies of elevate effect of slope blasting vibration[J].JiangxiNonferrous Metals,2006,20(4):10-13.
[13]郭学彬,肖正学,张志呈.爆破振动作用的坡面效应[J].岩石力学与工程学报,2001,20(1):83-86.Guo Xuebin,Xiao Zhengxue,Zhang Zhicheng.Slope effect of blas-ting vibration[J].Chinese Journal of Rock Mechanics and Engi-neering,2001,20(1):83-86.
[14]祁生文.单面边坡的两种动力反应形式及其临界高度[J].地球物理学报,2006,49(2):518-523.Qi Shengwen.Two patterns of dynamic responses of single-free-sur-face slopes and their threshold height[J].Chinese J.Geophys.,2006,49(2):518-523.
[15]于建华,谢用九,魏泳涛.高等结构动力学[M].成都:四川大学出版社,2001.Yu Jianhua,Xie Yongjiu,Wei Yongtao.Advanced structural dy-namics[M].Chengdu:Sichuan University Press,2001.
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