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(北京航空航天大學(xué)土木工程系  100083)
【提要】  取消現(xiàn)有公式中與實(shí)際不符的假定，考慮土體實(shí)際應(yīng)力條件，重新推導(dǎo)了臨界荷載公式，給出對(duì)任意側(cè)壓力系數(shù)均適用的臨界荷載計(jì)算公式，并將超固結(jié)比OCR引入臨界荷載的計(jì)算中。在粘聚力、內(nèi)摩擦角、基礎(chǔ)埋深、 基礎(chǔ)寬度、 土體重度、 超固結(jié)比等因素變動(dòng)的情況下， 著重分析了側(cè)壓力系數(shù)對(duì)臨界荷載的影響規(guī)律。
【關(guān)鍵詞】  臨界荷載  超固結(jié)比  土側(cè)壓力系數(shù)

Analysis of the Influence of Lateral Pressure Coefficient on Critical Bearing Capacity/Zhou Annan,Yao Yangping(Dept.of Civil Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China)
Abstract:Considering the actual stress condition,the inapplicable assume is discarded,and the new formula of critical loads is derived which is suitable for any lateral pressure coefficient.The OCR value is also inducted in the formula.The influence of lateral pressure coefficient on critical bearing capacity is analyzed with the change of cohesive strength,friction angle and so on.
Keywords:bearing capacity;OCR;coefficient of lateral earth pressure