Advancement of liquefaction assessment in Chinese building codes

International Symposium on Geohazards and Geomechanics 2015

地球科学;生态环境科学

Sun, Haoyu^1,2,3 ; Liu, Fang^1,2,3 ; Jiang, Minjing^1,2,3

State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, 1239 Siping Road, Shanghai

200092, China^1

Key Laboratory of Geotechnical and Underground Engineering, Tongji University, Ministry of Education, Shanghai

200092, China^2

Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai

200092, China^3

关键词: Assessment of liquefactions;    Descriptive information;    Engineering measures;    Liquefaction hazards;    Post-earthquake reconnaissances;    Preliminary assessment;    Seismic design code;    Site characterization;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/26/1/012056/pdf
DOI  :  10.1088/1755-1315/26/1/012056

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

China has suffered extensive liquefaction hazards in destructive earthquakes. The post-earthquake reconnaissance effort in the country largely advances the methodology of liquefaction assessment distinct from other countries. This paper reviews the evolution of the specifications regarding liquefaction assessment in the seismic design building code of mainland China, which first appeared in 1974, came into shape in 1989, and received major amendments in 2001 and 2010 as a result of accumulated knowledge on liquefaction phenomenon. The current version of the code requires a detailed assessment of liquefaction based on in situ test results if liquefaction concern cannot be eliminated by a preliminary assessment based on descriptive information with respect to site characterization. In addition, a liquefaction index is evaluated to recognize liquefaction severity, and to choose the most appropriate engineering measures for liquefaction mitigation at a site being considered.