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强震区桥台地基沉陷失效破坏机理研究

DOI: 10.3969/j.issn.1674-0696.2011.supp1.014, PP. 563-565

Keywords: 强震区,桥台,地基,沉陷失效,破坏机理,earthquakezone,abutment,foundation,settlementfailure,failuremechanism

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Abstract:

:?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

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