远场爆炸冲击波作用下高层建筑上部结构动态响应试验研究  

Experimental Study on Dynamic Response of Upper Structure of High-rise Building under Far-field Explosion Shock Wave Loading

作　　者：殷文骏 程帅[1] 刘文祥[1] 廖真 马龙 赵斌[2] 张德志[1] YIN Wenjun;CHENG Shuai;LIU Wenxiang;LIAO Zhen;MA Long;ZHAO Bin;ZHANG Dezhi(National Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi'an 710024,Shaanxi,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]西北核技术研究所强脉冲辐射环境模拟与效应全国重点实验室,陕西西安710024 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《兵工学报》2024年第11期4039-4051,共13页Acta Armamentarii

基　　金：国家自然科学基金项目(51527810)。

摘　　要：为研究高层建筑上部结构在远场爆炸冲击波整体加载作用下的动态响应规律,设计并制作1:30缩比的整体高层建筑模型,完成野外化爆试验,获取建筑模型迎爆面冲击波压力曲线和不同高度位置处的位移曲线,结合数值模拟的方法判断试验加载状态,并对建筑模型的破坏形态和实测数据进行分析。研究结果表明:在远场爆炸冲击波作用下,高层建筑框架柱破坏模式以受剪破坏为主,框架梁构件以弯曲破坏为主,同时不同构件间的相互作用对破坏模式也有重要的影响;爆心与建筑物夹角θ≤25°时,迎爆面各处冲击波压力参数相同;当建筑结构整体仍处于弹性变形阶段时,各高度位置前期水平位移变化曲线近似重合,运动周期保持一致,后期由于高度不同,位移峰值有一定差别,与高度近似呈线性增长的关系;建筑模型的变形与破坏主要取决于比冲量的大小,冲击波峰值影响较小。In order to study the dynamic response of the upper structure of high-rise building under the far-field explosion shock waveloading,1∶30 scaled models of high-rise building are designed for the field explosion experiment.The shock wave pressure curves and the displacement parameters at different heights of the modelsare obtained through experiment,and the experimental loading state is judged by the numerical simulation method.The damage patterns of the models and the measured data are analyzed.The results show that the failure mode of high-rise building frame column is mainly subjected to shear failureand the frame beam is mainly subjected to bending failureunder the effect of far-field explosion shock wave.In addition,the interaction between different components has an important influence on the failure mode.When the angle between the explosion center and the building is less than or equal to 25°,the pressure parameters of shock wave are the same all over the surface.When the whole structure is still in the elastic deformation stage,the change curves of horizontal displacement in the early stage of each height position approximately coincide with each other,and the motion periodsare consistent.The peak values of the displacement are different in the later stage due to the different heights,which are linear with the heights.The deformation and damage of the building mainly depend on the specific impulse,and are little affected by the peak shock wave pressure.

关 键 词：高层建筑 远场爆炸 爆炸冲击波 化爆试验 位移响应 

分 类 号：O383[理学—流体力学]