摘要
针对高桩码头抗爆设计需要,通过不同装药量、不同作用距离高桩圆柱模型荷载分布试验,得到水中爆炸冲击波在结构不同位置的反射压力和绕射压力,归一化处理得到爆炸冲击波在圆柱形结构上的反射系数和绕射系数。试验结果表明:在3~9倍比例距离内,正反射系数约为1.8,绕射系数约为0.55,在水中圆柱结构抗爆设计时,绕射压力不能忽略。
In order to satisfy with the antiknock design need for high pile wharf,the load distribution experiments on high column stake model include multiple test conditions such as different TNT quality and different distance were carried out.The reflection and diffraction shock wave in underwater explosion were record which action on the column stake model in different position,and the reflection coefficient and diffraction coefficient were researched by normalization processing.The test results indicate that the reflection coefficient is about 1.8 and the diffraction coefficient is about 0.55 in 3 times to 9 times proportional distance,and the diffraction coefficient can’t be ignore in antiknock structure designing.
作者
庄铁栓
伍俊
许文轩
杨程宇
ZHUANG Tieshuan;WU Jun;XU Wenxuan;YANG Chengyu(State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact,The Army Engineering Institute of PLA,Nanjing 21007,China;National Defense Engineering Institute,Academy of Military Science of PLA,Luoyang 471023,China;;School of Civil Engineering,Wuhan University,Wuhan 430072,China)
出处
《中国测试》
CAS
北大核心
2018年第10期60-66,共7页
China Measurement & Test
基金
国家自然科学基金资助项目(51578543)
关键词
水中爆炸
冲击波
高桩圆柱
荷载分布
反射系数
绕射系数
underwater explosion
shock wave
high column stake
load distribution
reflect coefficient
diffraction coefficient
