(北京航空航天大学土木工程系  100083)
【提要】  取消现有公式中与实际不符的假定，考虑土体实际应力条件，重新推导了临界荷载公式，给出对任意侧压力系数均适用的临界荷载计算公式，并将超固结比OCR引入临界荷载的计算中。在粘聚力、内摩擦角、基础埋深、 基础宽度、 土体重度、 超固结比等因素变动的情况下， 着重分析了侧压力系数对临界荷载的影响规律。
【关键词】  临界荷载  超固结比  土侧压力系数

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