中南大学学报（自然科学版）2017，Vol.48Issue(6)：1621-1628,8.DOI:10.11817/j.issn.1672-7207.2017.06.028
饱和砂土场地微差爆炸液化的试验与数值分析
Experimental and numerical investigations of liquefaction in saturated sand during multiple blasts with milliseconds interval
摘要
Abstract
A fully coupled numerical model was set up and validated by the data from a multiple-blast liquefaction test.The influence of detonation delay and charge mass on excess porewater pressure was analyzed.The results show that the empirical equation established from the numerical results is a good way to describe the relationship between excess porewater pressure ratio and scaled distance.Excess porewater pressure increase can be up to 18％ on the center area of the test pit when the detonation delay changes from 110 ms to 330 ms due to the superposition effect of blast waves.Excess porewater pressure increases with the increase of charge mass obviously,while the growth trend decreases gradually.关键词
饱和砂土/微差爆炸/爆炸液化/超孔隙水压力/数值模拟Key words
saturated sand/multiple blasts with milliseconds delay/blast-induced liquefaction/excess porewater pressure/numerical simulation分类
建筑与水利引用本文复制引用
姚颖康,王维国,贾永胜,陈育民..饱和砂土场地微差爆炸液化的试验与数值分析[J].中南大学学报（自然科学版）,2017,48(6):1621-1628,8.基金项目
国家自然科学基金资助项目(51379067) （51379067）
长江学者和创新团队发展计划(IRT1125)(Project(51379067) supported by the National Natural Science Foundation of China （IRT1125）
Project(IRT1125) supported by Program for Changjiang Scholars and Innovative Research Team in University) （IRT1125）
