摘要
运用极限分析法的上限定理和下限定理求解了服从Tresca屈服条件的四面临空立方顶部受压土体的极限荷载。通过构建简单的机动场,外力做功的功率应等于各个界面上内能消散率,求出土体的极限荷载的上限;通过构造一组应力柱的方法,求出土体的极限荷载的下限。求解的结果为板式托换基础工法的应用提供参考。
On the gives answers of basis of upper-bound theorem and lower-bound beating capacity of around-unconfined cube soil theorem of limit analysis, this paper which follows Tresca yield condition. Through setting up formula that work power by external force power equals to rates of internal energy dissipation by suitable choice of a kinematically admissible velocity field, the upper-bound solution can be obtained. From selection of certain stress legs, the lower-bound solution can be obtained. The results give reference to application of underpinning slab technology.
出处
《山东建筑大学学报》
2008年第3期200-202,共3页
Journal of Shandong Jianzhu University
基金
建设部科技计划(2007-K6-13)
山东省科技攻关计划(2007GG20006005)
山东建筑大学校内科研基金(XN070101)
关键词
极限分析法
四面临空土体
板式托换基础工法
应力柱
limit analysis method
around-unconfined cube soil
underpinning slab technology
stress legs
