基于不同强度准则的井壁极限承载力研究  

Study of the ultimate bearing capacity of a shaft lining based on different failure criteria

作　　者：任彦龙[1] 杨维好[1] 韩涛[1] 

机构地区：[1]中国矿业大学力学与建筑工程学院深部岩土力学与地下工程国家重点实验室,江苏徐州221116

出　　处：《中国矿业大学学报》2011年第4期540-543,共4页Journal of China University of Mining & Technology

基　　金：国家"十一五"科技支撑计划项目(2006BAB16B01)

摘　　要：通过理论分析获得了各种强度准则下井壁内缘混凝土强度提高系数和井壁极限承载力计算公式.结果表明:和Von-Mises强度准则相比采用Hsieh-Ting-Chen,Kupfer、过镇海-王传志(G-W)准则进行计算,井壁极限承载力分别提高了4.4%,10.1%,21.5%.采用传统的Von Mi-ses强度准则进行井壁设计计算,其结果偏于安全.建议充分利用混凝土多轴强度,采用能反映混凝土实际破坏包络面的强度准则进行井壁设计计算.The impact of the shaft lining ultimate bearing capacity under different failure criteria was studied. The results show that using the traditional Von Mises failure criteria for design calculations of the shaft lining tends to result in safe designs. The ultimate bearing capacity of the shaft lining was increased by 4.4o//00, 10.1~, or 21.5~ and calculations with the Hsieh- Ting-Chen, Kupfer, or G-W failure criteria were compared to those using the Von-Mises fail- ure criteria. Full advantage of the multi-axis strength of concrete may be taken by using more suitable failure criteria for the concrete during the design calculations of the shaft lining.

关 键 词：混凝土井壁 强度准则 极限承载力 混凝土强度提高系数 

分 类 号：TD321[矿业工程—矿井建设]