珊瑚砂动力特性研究进展  

Progress of Research on Dynamic Characteristics of Coral Sand

作　　者：李腾 方祥位 申春妮[3] 雷宇龙 LI Teng;FANG Xiangwei;SHEN Chunni;LEI Yulong(Department of Military Installations,Army Logistics University of PLA,Chongqing 401331,China;School of Civil Engineering,Chongqing University,Chongqing,400045,China;Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]陆军勤务学院军事设施系,重庆401331 [2]重庆大学土木工程学院,重庆400045 [3]重庆科技学院,重庆401331

出　　处：《海洋湖沼通报》2019年第5期90-95,共6页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金(51479208);总后勤部基建营房部资助项目(CY114C022);国防科技项目基金(2201059)资助

摘　　要：综述了颗粒破碎、围压、孔隙水压力、主应力方向等对珊瑚砂动强度、液化特性的影响,总结了珊瑚砂在复杂应力条件和微生物胶结固化后的动力特性研究进展。对珊瑚砂动力特性进一步研究进行了分析,指出应重点研究岛礁珊瑚砂在波浪荷载、爆炸荷载和地震等作用及耦合作用下的动力特性,建立复杂应力条件下考虑珊瑚砂颗粒破碎特性的动本构模型,加强珊瑚砂在地震作用下的液化机理及抗液化工程措施研究,加强岛礁恶劣环境下现场原位试验研究,完善微生物固化珊瑚砂动力特性研究等,不断丰富和完善珊瑚砂动力特性研究成果,为岛礁工程建设服务。The effects of particle breakage, confining pressure, pore water pressure and principal stress direction on the dynamic strength and liquefaction properties of coral sand are reviewed. The progress of research on the dynamic characteristics of coral sands under complex stress conditions and after microbial solidification cementation are summarized. The dynamic characteristics of coral sands are analyzed further. It is pointed out that the research should focus on dynamic characteristics of coral sands in islands and reefs under wave loading, blast loading, earthquakes and coupling effects. A dynamic constitutive model, considering particle breakage of coral sands under complex stress conditions, should be established. The research on liquefaction mechanism and anti-liquefaction engineering measures under earthquake action, field in-situ test under harsh environment of reefs should be further analyzed. The dynamic characteristics of microbial solidified coral sands should be strengthened to enrich and improve the research results of dynamic characteristics of coral sands, in order to serve the construction of reefs.

关 键 词：珊瑚砂 动力特性 动强度 液化 复杂应力 微生物固化 

分 类 号：TU43[建筑科学—岩土工程]