摘要
由于钙质砂内部含有大量孔隙,钙质砂通常处于三相饱和状态,其液化特性与完全饱和状态有明显不同。采用自主研制的装置开展三相饱和钙质砂的大尺寸爆炸模型试验,分析三相饱和状态下钙质砂的爆炸液化特性,建立三相饱和钙质砂的超孔隙水压力的长期消散模型。针对三相饱和钙质砂自身特点建立其动力液化模型,通过对爆炸试验进行数值模拟验证模型的可靠性。有关研究结果为沿海岛屿的爆炸灾后地基稳定性分析及安全防护设施建设提供了重要参考。
Due to a large number of pores inside the calcareous sand,the calcareous sand is usually in a three-phase saturated state,and its liquefaction characteristics are significantly different from the fully saturated state.The large-scale explosion model of three-phase saturated calcareous sand is test out by using a self-developed device.The explosion liquefaction characteristics of calcareous sand under three-phase saturation is analyzed.A long-term dissipation model of excess pore water pressure of three-phase saturated calcareous sand is established.A dynamic liquefaction model is established for the characteristics of three-phase saturated calcareous sand,and the reliability of the model is verified by numerical simulation of explosion experiment.The research results can provide reference for the analysis of foundation stability and the construction of safety protection facilities after the explosion disaster in coastal islands.
作者
黎晓冬
王亚松
邱艳宇
王明洋
岳松林
王建平
邓树新
LI Xiaodong;WANG Yasong;QIU Yanyu;WANG Mingyang;YUE Songlin;WANG Jianping;DENG Shuxin(State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact,Army Engineering University of PLA,Nanjing 210007,Jiangsu,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;Unit 63863 PLA,Baicheng 137000,Jilin,China;Unit 91053 PLA,Beijing 102202,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2023年第S01期170-179,共10页
Acta Armamentarii
基金
国家自然科学基金项目(51808552)
国家自然科学基金青年基金项目(51808553)。
关键词
钙质砂
爆炸荷载
三相饱和
液化
calcareous sand
explosive loading
three-phase saturated state
liquefaction
