土动力学研究综述及思考  

Review and further consideration on research of soil dynamics

作　　者：马晓文 梁庆国[1] 赵涛[1,2] 周稳弟 MA Xiaowen;LIANG Qingguo;ZHAO Tao;ZHOU Wendi(School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;Shaanxi Railway Institute,Weinan 714000, China)

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070 [2]陕西铁路工程职业技术学院,陕西渭南714000

出　　处：《世界地震工程》2021年第4期217-230,共14页World Earthquake Engineering

基　　金：国家自然科学基金项目(No.51968041,41562013);陕西省高校科协青年人才托举计划项目(20190706);兰州交通大学“百名青年优秀人才培养计划”(2017150);陕西铁路工程职业技术学院中青年科技创新人才项目(KIRC201902)。

摘　　要：随着国家重大构筑物的不断建设实施,考虑土体具有较高的动力易损性和致灾特性,工程构筑物的工程地质灾害和岩土工程动力致灾特性研究需要愈显迫切。通过对当前土动力学与岩土地震工程方面研究进展进行归纳总结,着重从土的动力强度、土的动本构关系、砂土的振动液化、铁路路基中的动应力、边坡地震永久变形和稳定性、挡土墙上的地震土压力等六个方面进行叙述,对其中涉及的各种研究方法进行比较和论述,最后提出了土动力学有待进一步深入研究的若干问题和未来发展方向,以期基于土动力学的发展而提升构筑物的抗震设防水平。With the continuous construction of major national structures,considering the high dynamic vulnerability and disaster causing characteristics of soil,the research on engineering geological disasters and geotechnical engineering dynamic hazard characteristics becomes more urgent.This paper summarizes the current research progress of soil dynamics and geotechnical seismic engineering,focusing on six aspects:the dynamic strength of the soil,the dynamic constitutive relation of soil,the vibration liquefaction of the sand,the dynamic stress in railway subgrade,the permanent deformation and stability of the slope under earthquake,the seismic earth pressure on the retaining wall.and various research methods involved are compared and discussed.Finally,some issues to be further studied in the soil dynamics and future development directions are proposed in order to improve the seismic fortification capacity of the structure based on the development of the soil dynamics.

关 键 词：动力荷载 动强度 砂土液化 动本构关系 路基动应力 边坡 挡土墙 

分 类 号：TU435[建筑科学—岩土工程]