摘要
通过开展水下单点爆破冲击波形态数值研究,准确模拟了水下爆破过程中气云和冲击波演变特征,再现冲击波压力及气泡形态历时变化,分析了水下爆破冲击波形态特征及其传播规律。在此基础上,结合水下爆破冲击波与桥墩相互作用,研究桥墩结构在冲击波作用下的响应特征,结果表明:冲击波与桥墩作用后在墩底处多波作用下伴有震荡,在自由水面处受冲切作用。
Numerical study on shock wave pattern of underwater single point blasting was conducted to accurately simulate the characteristics of gas cloud and shock wave evolution during underwater blasting,and to reveal the diachronic changes of shock wave pressure and bubble pattern,based on which the authors analyze the shock wave pattern characteristics and propagation law of underwater blasting.Combined with the interaction between underwater blasting shock wave and bridge piers,the response characteristics of pier structures under shock wave were studied.The results of study demonstrate there exists vibration at the bottom of pier under the action of multiple waves,and the pier is subjected to scouring shear action at the free water surface.
作者
黄贤智
王彬谕
经民富
陈艺
HUANG Xian-zhi;WANG Bin-yu;JING Min-fu;CHEN Yi(Guangxi Transport Vocational and Technical College,Nanning 530023,China;Wuzhou Waterway Maintenance Center of Guangxi Zhuang Autonomous Region,Wuzhou 543001,China)
出处
《广西水利水电》
2022年第5期3-7,共5页
Guangxi Water Resources & Hydropower Engineering
基金
广西壮族自治区港航发展中心西江航运干线贵港至梧州3000吨级航道工程建设指挥部技术服务项目(合同编号:GWHD-ZX-2021-02)
2020年度第二批广西交通运输行业重点科技项目(编号:JZY2020KZD02)。
关键词
水下炸礁
冲击波特性
单点爆破
桥墩响应
Underwater reef blasting
shock wave characteristics
single point blasting
bridge pier response
