2011年东日本大地震人工填土场地液化特征综述  

Review of liquefaction characteristics in artificially filled land during the 2011 Great East Japan Earthquake

作　　者：张文彬[1] 汪云龙[1] 曹振中[1,2] 侯龙清[3] 李雨润[4] 

机构地区：[1]中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [2]广西岩土力学与工程重点实验室,桂林理工大学,广西桂林541004 [3]东华理工大学建筑工程学院,江西杭州541004 [4]河北工业大学土木工程学院,天津300132

出　　处：《世界地震工程》2017年第2期13-23,共11页World Earthquake Engineering

基　　金：国家科技支撑计划项目(2015BAK17B01);国家自然科学基金(51278472,41272357,51669005);国家重点研发计划政府间国际科技创新合作重点专项(2016YFE0105500)

摘　　要：填海造陆人工填土已成为我国工程建设中的重要方式,其地震安全性特别是无粘性土或低粘性土的液化问题成为了重要课题,而对此方面以往震害经验甚少。2011年东日本大地震中东京湾区域的人工填土场地出现了大量液化震害并造成了巨大经济损失,随后也有一些研究工作开展,本文对此进行分析总结。通过相关资料收集整理,回顾了东京湾填海造陆的历史,介绍了此次地震液化震害情况,阐述了场地工程地质背景和液化场地特征,讨论了人工填土沉积时间与土体抗液化能力的关系。作为目前填海造陆人工填土场地液化震害极其有限的宝贵经验,将对我国相关工程建设和液化灾害预防技术发展提供有益借鉴。Land reclamation by artificial filling has become a significant way to engineering construction in China. The seismic safety, especially liquefaction in incohesive or low-cohesive filled soils, has become an important topic. However earthquake damage in artificially filled land has seldom been reported. During the 2011 Great East Japan Earthquake, the artificially filled land around Tokyo bay experienced severe liquefaction, which caused enormous economic loss. This paper analyzes and summarizes the liquefaction issues in Tokyo bay area by the 2011 Great East Japan Earthquake. Through collecting the relevant information, this paper reviews the history of artificially filled land around Tokyo bay, introduces the seismic induced liquefaction damage, expounds engineering geological background and characteristics of the liquefied sites, and discusses the relationship between the aging of filled land and liquefac- tion resistance. As valuable lessons for liquefaction damage in artificial filled land, this article provides beneficial reference for liquefaction prevention technology and relevant engineering construction in China.

关 键 词：人工填土 2011东日本地震 场地液化 

分 类 号：P315.9[天文地球—地震学]