饱和砂土场地大型爆炸液化现场试验研究

发布时间：2018-11-07 12:41

【摘要】：土体振动液化是岩土工程领域中引人注目的热点问题,振动及液化引发的房屋倒塌或堤坝溃决将严重危及生命和财产安全。基于室外大型爆炸液化可控试验场地,开展了一系列饱和砂土中的单点及多点微差爆炸液化试验。介绍了现场爆炸液化试验的主要技术细节,包括钻孔及布药方式、监测设备及方法、混凝土结构及土质堤坝的设计等。分析了饱和砂土中单点和多点微差爆炸引起的土中孔隙水压力上升规律、爆炸液化的影响因素以及利用多点微差爆炸液化人工制造大面积液化试验场地的实现条件和方法,并最终开展爆炸液化场地混凝土结构及土质堤坝的变形研究。试验的成功实施为人工制造大型振动液化试验场地的方法提供了参考。
[Abstract]:Vibration liquefaction of soil is a hot issue in the field of geotechnical engineering. The collapse of buildings or the collapse of embankments caused by vibration and liquefaction will seriously endanger the safety of life and property. A series of single-point and multi-point millisecond explosion liquefaction tests were carried out in saturated sand based on the outdoor controlled explosive liquefaction test site. This paper introduces the main technical details of field explosion liquefaction test, including drilling and distributing method, monitoring equipment and method, design of concrete structure and earth dike, etc. The law of pore water pressure rise caused by single point and multi point differential explosion in saturated sand, the influencing factors of explosion liquefaction, and the conditions and methods of artificial manufacturing large area liquefaction test site by multi point differential explosion liquefaction are analyzed. Finally, the deformation study of concrete structure and earth dike in explosive liquefaction site is carried out. The successful implementation of the test provides a reference for the method of artificial manufacture of large vibration liquefaction test site.
【作者单位】：重庆大学土木工程学院;河海大学岩土力学与堤坝工程教育部重点实验室;宁波市交通建设工程试验检测中心有限公司;
【基金】：国家自然科学基金面上项目(51379067) 长江学者创新团队发展计划项目(IRT1125)
【分类号】：TU441

【参考文献】