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《Chinese Journal of Underground Space and Engineering》 2014-05
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Discussion on Reflection Coefficient for Buried Rock Structure Subjected bo Explosive Load

Zhang Yu;Li Guoqiang;Wang Zhiliang;Department of Building Engineering ,Logistics University of PAPF;College of Civil Engineering,Tongji University;State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University;  
The reflection coefficient of buried structure is defined as the peak value of free field divided by the peak value of reflection field,and it is an important factor to determine the blast load around the underground structure. Considering the interface effects,i. e. interaction between the medium and structure and interaction between blast wave and medium,the paper discusses the reflection mechanism of the underground structure interface. By altering finite factors,the paper discusses the effect of factor variation on reflection coefficient systematically. At first,considering the influence of the characteristic of some factors for the explosion source on interface reflection,such as ratio distance,explosion equivalent,explosion angle etc. Secondly,by alternating medium characteristics i. e. relative density,relative elastic modulus,relative Poisson's radio,discuss the change of the reflection; At last,by alternating structure characteristics,i. e. shape and size of the structure,the change of the reflection is discussed. From the research result,characteristic of the explosion source and the medium,and also shape and size of the structure more or less influence the reflection coefficient.
【Fund】: 中国博士后科学基金第55批面上项目(2014M551451);; 国家自然科学基金重大国际合作研究项目(51120185001);国家自然科学基金(51379147 51174145)
【CateGory Index】: TU45;TU751.9
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Chinese Journal Full-text Database 5 Hits
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