饱和砂土地震液化后地面大位移特性研究

周云东; 袁印龙; 王志华

doi:10.13409/j.cnki.jdpme.2012.06.012

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饱和砂土地震液化后地面大位移特性研究

汶川地震考察与研究 | 更新时间：2025-12-11

- 饱和砂土地震液化后地面大位移特性研究
- Study on Large Ground Displacement of Saturated Sand Induced by Earthquake Liquefaction
- 防灾减灾工程学报 2012年32卷第6期页码：720-724
- 作者机构：
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（59809004/50808067）资助
- DOI：10.13409/j.cnki.jdpme.2012.06.012
  中图分类号： U435;TU441.4
- 纸质出版：2012
- 稿件说明：
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[1]周云东,袁印龙,王志华.饱和砂土地震液化后地面大位移特性研究[J].防灾减灾工程学报,2012,32(06):720-724.

周云东, 袁印龙, 王志华. Study on Large Ground Displacement of Saturated Sand Induced by Earthquake Liquefaction[J]. 2012, 32(6): 720-724.
[1]周云东,袁印龙,王志华.饱和砂土地震液化后地面大位移特性研究[J].防灾减灾工程学报,2012,32(06):720-724. DOI： 10.13409/j.cnki.jdpme.2012.06.012.

周云东, 袁印龙, 王志华. Study on Large Ground Displacement of Saturated Sand Induced by Earthquake Liquefaction[J]. 2012, 32(6): 720-724. DOI： 10.13409/j.cnki.jdpme.2012.06.012.

摘要

地震引起的地基液化常会造成地基大的侧向变形而导致灾难性的破坏

饱水砂土液化后的变形特性是地震液化大位移研究的基础。通过全自动多功能三轴仪的空心样动加载液化后的静扭剪试验

对饱水砂土液化后大变形特性进行了试验研究。结果表明

与常规静加载特性不同

饱水砂土液化后静加载时表现出单调剪胀的特性

加载初始阶段孔压基本不变

应变达到一定幅度后孔压一直减小

液化后变形曲线可分为低强度段和强度恢复段。低强度段模量近乎为零

强度恢复段试样强度不断增长。低强度段是液化后大变形发生的主要阶段。

Abstract

Great disasters will be caused by large lateral deformation induced by earthquake liquefaction.The behavior of saturated sand after liquefaction is the basis of the research on earthquake-induced large deformation.Static torsion shear tests of hollow sample on post liquefaction of sand are performed.Test results show that the EPP always falls during static loading and the sand has the property of dilatation after liquefaction.The deformation curves can be divided into two sections

low strength segment and strength recovery segment.The modulus of low strength segment is approximate zero and it increases in the strength recovery segment.Large lateral deformation after liquefaction mainly occurred in the low strength segment.

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references

近远场地震作用下液化地基上地铁车站结构动力损伤特性的振动台试验 [J]. 陈国兴,左熹,王志华,杜修力,孙田,胡庆兴. 土木工程学报 . 2010(12)

砂土液化后大变形的机理 [J]. 张建民,王刚. 岩土工程学报 . 2006(07)

Effect of Soil Permeability on Centrifuge Modeling of Pile Response to Lateral Spreading [J] . Lenart González,Tarek Abdoun,Ricardo Dobry. Journal of Geotechnical and Geoenvironmental Engi . 2009 (1)

Importance of viscous fluid characteristics in liquefaction induced lateral spreading analysis [J] . S. Hadush,A. Yashima,R. Uzuoka. Computers and Geotechnics . 2000 (3)

Steady-State Concepts and Static Liquefaction of Silty Sands [J] . Jerry A. Yamamuro. Journal of Geotechnical and Geoenvironmental Engi . 1998 (9)

Fluid dynamics based prediction of liquefaction induced lateral spreading [J] . R. Uzuoka,A. Yashima,T. Kawakami,J.-M. Konrad. Computers and Geotechnics . 1998 (3)

Empirical Prediction of Liquefaction-Induced Lateral Spread [J] . Steven F. Bartlett,T. Leslie Youd. Journal of Geotechnical Engineering . 1995 (4)

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