MechanisMStudy on Ground Subsidence Damage of Abutment Failure
in MeizoseisMal Area

doi:10.3969/j.issn.1674-0696.2011.supp1.014

Journal of Chongqing Jiaotong University(Natural Science) ›› 2011, Vol. 30 ›› Issue (S1): 563-565.DOI: 10.3969/j.issn.1674-0696.2011.supp1.014

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MechanisMStudy on Ground Subsidence Damage of Abutment Failure in MeizoseisMal Area

XIANG Qing-gang ¹，CHEN Hong-kai² ，LIAO Yun-ping ¹,²· ，LIU Rong-can¹,²

1.Institute of Geology& Mineral Resources of Chongqing，Chongqing 400042，China； 2.Institute of Geotechnical Engineering，Chongqing Jiaotong University，Chongqing 400074，China

Received:2011-05-23 Revised:2011-06-20 Online:2011-07-15 Published:2015-03-12

强震区桥台地基沉陷失效破坏机理研究

向庆刚¹，陈洪凯²，廖云平¹,²，刘荣灿¹,²

重庆地质矿产研究院，重庆400042；2．重庆交通大学岩土工程研究所，重庆40007

作者简介:向庆刚(1979—)，男，重庆人，工程师，主要从事岩土工程与地质灾害方面的研究。E-mail：liurongcan163@163．Com

Abstract

Abstract: For a large number of abutment~undation failure and subgrade subsidence occurred in Wenchuan eaahquake，a study on the bridge abutment ground subsidence under ea~hquake was made．Based on Prandtl theory and Coulomb wedge equilibriuMcondition，Mononobe-Okabe ea~hquake formula was adopted considering the impact of shear friction force of in- terface and the calculating formula of ground bearing capacity under earthquake was made out．According to this formula， the safety assessment of the~undation intensity reduced in earthquake could be easily carried out．

Key words: earthquake zone, abutment, foundation, settlement failure, failure mechanism

摘要： 针对汶川地震中大量桥台地基出现沉陷失效现象，对地震作用下桥台地基沉陷进行了理论研究。基于Prandtl 破坏面理论和Coulomb楔体平衡条件，并考虑地震力和接触面剪切摩擦的影响，采用Mononobe—Okabe地震公式，得出地震作用下地基承载力计算公式，据此对地震下地基强度降低现象进行安全评定

关键词: 强震区, 桥台, 地基, 沉陷失效, 破坏机理

CLC Number:

U442.5⁺5

XIANG Qing-gang ，CHEN Hong-kai ，LIAO Yun-ping ,· ，LIU Rong-can,. MechanisMStudy on Ground Subsidence Damage of Abutment Failure in MeizoseisMal Area[J]. Journal of Chongqing Jiaotong University(Natural Science), 2011, 30(S1): 563-565.

向庆刚，陈洪凯，廖云平,，刘荣灿,. 强震区桥台地基沉陷失效破坏机理研究[J]. 重庆交通大学学报（自然科学版）, 2011, 30(S1): 563-565.

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MechanisMStudy on Ground Subsidence Damage of Abutment Failure in MeizoseisMal Area

强震区桥台地基沉陷失效破坏机理研究

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