（1江苏科技大学土木工程与建筑学院， 镇江 212000；  2 江苏长江爆破公司， 镇江 212000）

［摘要］以江苏省昆山市朝阳西路南侧两栋楼房的爆破项目为工程背景，对爆破过程中产生的地震动及其效应，包括地震波的传播与衰减规律以及振动对邻近区域内一座三层砌体结构房屋安全性能的影响，进行现场测试，并采用有限元软件SAP2000进行数值模拟分析。测试结果表明，砌体结构房屋的竖向振动速度大于水平向振动速度，三层走廊的各向振动速度大于一层，竖向主振频率大都集中在10Hz以下，水平向主振频率相对分散，但基本不超过50Hz。经有限元数值模拟分析得到的低阶自振频率与顶层加速度值与实测的结果误差较小。

［关键词］爆破地震波； 砌体结构； 自振频率； 有限元分析

中图分类号：TU365文献标识码：A文章编号：1002-848X(2020)06-0122-05

Field measurement and numerical simulation of   dynamic response of masonry structure under blasting ground motion

Ni Hangen1, Pan Zhihong1, Sun Ke1, Zhang Yaoliang2, Zhou Bocheng2

(1 School of Architecture and Civil Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000， China;2 Jiangsu Changjiang Blasting Company, Zhenjiang 212000, China)

Abstract:Taking the blasting project of two buildings on the south side of Chaoyang West Road in Kunshan City, Jiangsu Province as the engineering background, the ground motion and its effect in the blasting process were tested on site, including the propagation and attenuation of earthquake wave and the influence of vibration on the safety performance of a three-story masonry structure in the adjacent area, and the numerical simulation analysis was carried out by using the finite element software SAP2000. The test results show that the vertical vibration speed of masonry buildings is greater than the horizontal vibration speed, and the vibration speed of three-story corridor is greater than that of one story. The vertical main vibration frequency is mostly concentrated below 10Hz, and the horizontal main vibration frequency is relatively scattered, but it is basically no more than 50Hz. The errors between the low-order natural frequency and the top acceleration obtained by the finite element numerical simulation and the measured results are small.

Keywords:blasting earthquake wave; masonry structure; natural frequency; finite element analysis

*湖南省自然科学基金（11JJ5024），江苏省研究生创新计划（KYCX17_1847）。

作者简介：倪汉根，硕士，Email：470301974@qq.com。