摘要
本文将金属拱形可缩支架离散为三种基本单元，曲梁单位、直梁单元、可缩构件为弹塑弹簧单元，基于拖带坐标建立曲梁单元与围岩共同作用的Ｕ．Ｌ．列式增量平衡方程和地基上直梁单元Ｕ．Ｌ．列式增量平衡方程；并采用加权残值法消除曲梁单元薄膜力闭锁，剪切闭锁．为有限元计算拱形支架等的极限承载力及有限变形提供了理论理论．图５，参６．
In this paper yieldable steel arch has being separated into space arc beam elements,linear beam elements,and staple elements.Being considered the interaction of yieldable steel arch and rock of roadway in coal mines.U.L. incremental equilibrium equation of the arc beam element and linear beam element is formed by basically and shear locking of the arc beam elements are eliminated by Method of Weight Residuals. 5figs., 16refs.
出处
《湘潭矿业学院学报》
1998年第3期76-83,共8页
Journal of Xiangtan Mining Institute
基金
煤炭科学基金
关键词
可缩支架
增量平衡方程
极限承载力
金属支架
Yieldable steel arch,staple element,incrimental equilibrium equation,ultimate load
