不同设防水准下场地液化震害风险差异性研究

doi:10.13722/j.cnki.jrme.2021.1151

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Abstract The fortification level is an important factor to determine the effect of liquefaction disaster prevention. However，there is still less knowledge on the difference of risk of earthquake liquefaction damages under different fortification levels，and as a result，the seismic codes of building and structure engineering，highway engineering，railway engineering，water transportation engineering in China still adopt basic seismic ground motion as the fortification index to deal with site liquefaction hazards. A simplified model is set up，and based on mature and engineering acceptable site liquefaction analysis methods，the formulas for calculating the liquefaction-induced damage risk under basic seismic ground motion(moderate earthquake)，rare seismic ground motion(rare earthquake) and extremely rare seismic ground motion(huge earthquake) are derived. The difference of liquefaction-induced damage under three fortification levels is discussed，and based on the comparative analysis of liquefaction damages caused by the 2021 Maduo M7.4 earthquake，the necessity of fortification against site liquefaction under rare earthquake is demonstrated. The results show that the liquefaction-induced damage risk varies significantly under the three different fortification levels and the liquefaction-induced damage risk increases obviously when the level of seismic ground motion increases. In terms of the engineering sites in seventh and eighth grade regions widely distributed in China，for the near liquefaction site and slight，medium liquefaction sties，under the rare and extremely rare seismic ground motions，site liquefaction index and its possibility both have a sharp rise. On the principle of the most disadvantageous，liquefaction index at least will be increased by at least one grade，most by two grades，partly by three grades，and the occurrence probability is increased by 20%–30%，reaching high and very high levels. There is a good correspondence between the seismic ground motion level of liquefaction fortification，actual seismic ground motion intensity，actual site liquefaction severity and bridge damage grade in the 2021 Maduo M7.4 earthquake，which shows the correctness of the theoretical derivation of the paper and the necessity of liquefaction fortification for the rare earthquake ground motion. In view of the consistency of seismic resilience and the goal of "not falling in a big earthquake"，the seismic ground motions of relevant engineering design in China should not only adopt the basic peak ground acceleration，but also take the rare peak ground acceleration as the fortification value of site liquefaction deformation control.

Key words： soil mechanics ground motion level liquefaction damage risk Maduo M7.4 earthquake basic seismic ground acceleration fortification liquefaction fortification against rare earthquakes

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	Articles by authors
	YUAN Jinyuan1
	2
	WANG Lanmin1
	3
	WANG Yunlong1
	YUAN Xiaoming1

Cite this article:

YUAN Jinyuan1,2,WANG Lanmin1, et al. Study on difference of risk of earthquake liquefaction damages at different fortification levels[J]. , 2023, 42(1): 246-260.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.1151 OR https://rockmech.whrsm.ac.cn/EN/Y2023/V42/I1/246

[1]	KIYOTA T，FURUICHI H，HIDAYAT R F，et al. Overview of long-distance flow-slide caused by the 2018 Sulawesi earthquake，Indonesia[J]. Soils and Foundations，2020，60(3)：722–735.
[2]	袁晓铭，张文彬，段志刚，等. 珊瑚土工程场地地震液化特征解析[J]. 岩石力学与工程学报，2019，38(增2)：3 799–3 811.(YUAN Xiaoming，ZHANG Wenbin，DUAN Zhigang，et al. Analysis for characteristics of seismic liquefaction in engineering sites of coralline soils[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(Supp.2)：3 799–3 811.(in Chinese))
[3]	王兰民. 黄土地层大规模地震液化滑移的机制与风险评估[J]. 岩土工程学报，2020，42(1)：1–19.(WANG Lanmin. Mechanism and risk evaluation of sliding flow triggered by liquefaction of loess deposit during earthquakes[J]. Chinese Journal of Geotechnical Engineering，2020，42(1)：1–19.(in Chinese))
[4]	周燕国，谭晓明，梁甜，等. 利用地震动强度指标评价场地液化的离心模型试验研究[J]. 岩土力学，2017，38(7)：1 869–1 877. (ZHOU Yanguo，TAN Xiaoming，LIANG Tian，et al. Evaluation of soil liquefaction by ground motion intensity index by centrifuge model test[J]. Rock and Soil Mechanics，2017，38(7)：1 869–1 877.(in Chinese))
[5]	刘汉龙，王维国，刘军，等. 饱和砂土场地大型爆炸液化现场试验研究[J]. 岩土工程学报，2017，39(4)：601–608.(LIU Hanlong，WANG Weiguo，LIU Jun，et al. Large-scale field tests on blast-induced liquefaction in saturated sand[J]. Chinese Journal of Geotechnical Engineering，2017，39(4)：601–608.(in Chinese))
[6]	邹佑学，王睿，张建民. 可液化场地碎石桩复合地基地震动力响应分析[J]. 岩土力学，2019，40(6)：2 443–2 455.(ZOU Youxue，WANG Rui，ZHANG Jianmin. Analysis on the seismic response of stone columns composite foundation in liquefiable soils[J]. Rock and Soil Mechanics，2019，40(6)：2 443–2 455.(in Chinese))
[7]	李晶，陈育民，方志，等. 减饱和砂土缓倾场地的液化性状分析[J]. 岩土力学，2019，40(11)：4 352–4 360.(LI Jing，CHEN Yumin，FANG Zhi，et al. Liquefaction characteristics analysis on gently tilting desaturated sandy ground[J]. Rock and Soil Mechanics，2019，40(11)：4 352–4 360.(in Chinese))
[8]	张小玲，朱冬至，许成顺，等. 强度弱化条件下饱和砂土地基中桩土相互作用p-y曲线研究[J]. 岩土力学，2020，41(7)：2 252–2 260. (ZHANG Xiaoling，ZHU Dongzhi，XU Chengshun，et al. Research on p-y curves of soil-pile interaction in saturated sand foundation in weakened state[J]. Rock and Soil Mechanics，2020，41(7)：2 252–2 260.(in Chinese))
[9]	刘小丽，刘红军，贾永刚. 黄河三角洲饱和粉土层地震液化判别方法及液化特征研究[J]. 岩石力学与工程学报，2007，26(增1)：2 981–2 987.(LIU Xiaoli，LIU Hongjun，JIA Yonggang. Investigation on prediction methods and characteristics of earthquake-induced liquefaction of silty soil in the Yellow River delta[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：2 981–2 987. (in Chinese))
[10]	黄亚虹，吕悦军，荣棉水，等. 关于深层砂土液化判定方法的探讨——港珠澳特大桥水下隧道工程场地为例[J]. 岩石力学与工程学报，2012，31(6)：856–864.(HUANG Yahong，LU Yuejun，RONG Mianshui，et al. Study of evaluation method of liquefaction for sandy soil in deep layer-taking undersea tunnel site of Hongkong-Zhuhai-Macao great bridge as example[J]. Chinese Journal of Rock Mechanics and Engineering，2002，2012，31(6)：856–864.(in Chinese))
[11]	张健，李雨润，闫志晓，等. 基于频谱分析的饱和砂土场地直斜群桩承台–土体耦合作用下桩身弯矩分布规律研究[J]. 岩石力学与工程学报，2020，39(4)：829–844.(ZHANG Jian，LI Yurun，YAN Zhixiao，et al. Study on the distribution law of the bending moment of vertical and batter piles in saturated sand under cap and soil coupling based on frequency analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(4)：829–844.(in Chinese))
[12]	李雨润，闫志晓，张健，等. 饱和砂土中直群桩动力响应离心机振动台试验与简化数值模型研究[J]. 岩石力学与工程学报，2020，39(6)：1 252–1 264.(LI Yurun，YAN Zhixiao，ZHANG Jian，et al. Centrifugal shaking table test and numerical simulation of dynamic responses of straight pile group in saturated sand[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(6)：1 252–1 264.(in Chinese))
[13]	中华人民共和国国家标准编写组. GB50011—2010 建筑抗震设计规范[S]. 北京：中国建筑工业出版社，2010.(The National Standards Compilation Group of People?s Republic of China. GB50011—2010 Code for seismic design of buildings[S]. Beijing：China Architecture and Building Press，2010.(in Chinese))
[14]	中华人民共和国国家标准编写组. GB50223—2008建筑工程抗震设防分类标准[S]. 北京：中国建筑工业出版社，2008.(The National Standards Compilation Group of People?s Republic of China. GB50223—2008 Standard for classification of seismic protection of building constructions[S]. Beijing：China Architecture and Building Press，2008.(in Chinese))
[15]	中华人民共和国行业标准编写组. JTG B02—2013公路工程抗震规范[S]. 北京：人民交通出版社，2013.(The Professional Standards Compilation Group of People?s Republic of China. JTG B02—2013 Specification of seismic design for highway engineering[S]. Beijing：People?s Communications Publishing House，2013.(in Chinese))
[16]	中华人民共和国国家标准编写组. GB50111—2006铁路工程抗震设计规范[S]. 北京：中国计划出版社，2009.(The National Standards Compilation Group of the People?s Republic of China. GB50111—2006 Code for seismic design of railway engineering[S]. Beijing：China Planning Publishing House，2012.(in Chinese))
[17]	中华人民共和国行业标准编写组. JTS 146—2012水运工程抗震设计规范[S]. 北京：人民交通出版社，2012.(The Professional Standards Compilation Group of People?s Republic of China. JTS 146—2012 Code for seismic design of water transport engineering[S]. Beijing：People's Communications Publishing House，2012.(in Chinese))
[18]	袁近远，李天宁，王兰民，等. 砂土液化概率计算新方法[J]. 岩土工程学报，2021，https：//kns.cnki.net/ kcms/detail/32.1124.TU. 20210913.1555.004.html.(YUAN Jinyuan，LI Tianing，WANG Lanming，et al. A new method for calculating the probability of sand liquefaction[J]. Chinese Journal of Geotechnical Engineering，2021，https：//kns.cnki.net/kcms/detail/32.1124.TU. 20210913.1555.004. html.(in Chinese))
[19]	袁晓铭，费扬，陈龙伟，等. 含剧烈地震动作用不同埋深砂土液化判别统一公式[J]. 岩石力学与工程学报，2021，40(10)：2 101–2 112.(YUAN Xiaoming，ZHANG Wenbin，DUAN Zhigang，et al. A unified formula for predicting sand liquefaction in different buried depths under severe seismic ground motion and below[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(10)：2 101–2 112.(in Chinese))
[20]	中华人民共和国国家标准编写组. GB 18306—2015中国地震动参数区划图[S]. 北京：中国标准出版社，2015.(The National Standards Compilation Group of People?s Republic of China. GB 18306—2015 Ground motion parameter zonation map of China[S]. Beijing：China Standards Publishing House，2015.(in Chinese))
[21]	李春果，王宏伟，温瑞智，等. 2021年青海玛多 MS7.4 地震随机有限断层三维地震动模拟[J]. 地震地质，43(5)：1 085–1 110.(LI Chunguo，WANG Hongwei，WEN Ruizhi，et al. Three-component ground motion simulations based on the stochastic finite-fault method for the MaduoS7.4 Earthquake，Qinghai Province[J]. Journal of Seismology and Geology，43(5)：1 085–1 110.(in Chinese))
[22]	管仲国，黄勇，张昊宇，等. 青海玛多7.4级地震桥梁工程震害特性分析[J]. 世界地震工程，2021，37(3)：38–45.(GUAN Zhongyong，HUANG Yong，ZHANG Haoyu，et al. Damage Characteristics and Analysis of Bridge Engineering in Qinghai Maduo M7.4 Earthquake[J]. World Earthquake Engineering，2021，37(3)：38–45.(in Chinese))
[23]	张昊宇，黄勇，汪云龙，等. 基于倾斜摄影的野马滩大桥震害位移评价[J]. 地震工程与工程震动，2022，42(2)：89–103.(ZHANG Haoyu，HUANG Yong，WANG Yunlong，et al. Oblique photography modeling displacement estimation of Yematan Bridges[J]. Earthquake Engineering and Engineering Vibration，2022，42(2)：89–103.(in Chinese))