基于枕头坝二级水电站混凝土导墙爆破拆除的邻近建(构)筑物动态响应数值模拟研究  

Numerical Simulation on the Dynamic Response of Adjacent Buildings and Structures Based on the Blasting Demolition of Concrete Guide Walls at Zhentouba II Hydropower Station

作　　者：王钥 廖志毅[3] 陈琰 赵星 李刚 汤伟雄 WANG Yao;LIAO Zhiyi;CHEN Yan;ZHAO Xing;LI Gang;TANG Weixiong(Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization,Shenzhen University,Shenzhen 518060,Guangdong,China;Institute of Deep Earth Sciences and Green Energy,Shenzhen University,Shenzhen 518060,Guangdong,China;Institute of Rock Instability and Seismicity Research,Dalian University of Technology,Dalian 116081,Liaoning,China;PowerChina Guiyang Engineering Corporation Limited,Guiyang 550081,Guizhou,China)

机构地区：[1]深圳大学广东省深地科学与地热能开发利用重点实验室,广东深圳518060 [2]深圳大学深地科学与绿色能源研究院,广东深圳518060 [3]大连理工大学岩石破裂与失稳研究所,辽宁大连116081 [4]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550081

出　　处：《水力发电》2024年第9期49-58,共10页Water Power

基　　金：深圳市基础研究资助项目(JCYJ20210324093402006)。

摘　　要：基于枕头坝二级水电站临时混凝土导墙爆破拆除工程,开展了混凝土构筑物爆破拆除时邻近建(构)筑物动态响应研究。采用ANSYS-LSDYNA有限元软件和等效爆破荷载法对混凝土导墙多孔爆破拆除进行模拟,分别监测单侧混凝土导墙爆破拆除和两侧混凝土导墙同时爆破拆除邻近区域内硅厂构筑物、砖房、电厂地表和公路表面的动态响应特征。研究发现:构筑物位置处的质点峰值振速大小主要与爆心距有关,质点峰值振速随爆心距增大而减小;爆破地震波传播路径上的阻碍影响远端构筑物表面的质点峰值振速。Based on the blasting demolition project of the temporary concrete guide walls in Zhentouba II Hydropower Station,the dynamic response of adjacent buildings and structures during the blasting demolition is studied.The ANSYS-LSDYNA finite element software and equivalent blasting load method are used to simulate the blasting demolition of concrete guide walls,and the dynamic response laws of the structures in adjacent area,including the structure in silicon plant,the brick house in residential area,the ground surface of power plant and the road,are studied under the blasting demolition of single-side concrete guide wall and the simultaneous blasting demolition of both sides concrete guide wall,respectively.The study show that the peak particle velocity at the location of structure is mainly related to the distance between the blasting centre and the structure,and it will decrease with the increase of the distance from explosion centre;the obstruction in the propagation path of blasting seismic wave will affect the peak particle velocity of structures.

关 键 词：混凝土导墙拆除 爆破 动态响应 质点峰值振速 等效爆破荷载法 枕头坝二级水电站 

分 类 号：TU751.9[建筑科学—建筑技术科学] TU746.5