摘要
该文采用线弹性断裂力学原理分析边坡的破坏机理,运用ansys软件模拟边坡在失稳破坏过程中裂缝的扩展过程,分析应力强度因子在裂纹扩展过程中的变化规律。首先在坡顶最易开裂位置假设第一条裂缝,利用断裂韧性确定该裂缝的临界缝长和扩展角,依次扩展直至贯通,所形成的边坡破裂面基本符合实际,分析表明了该方法的可行性。
The slope failure mechanism is analyzed with linear elastic fracture mechanics. Through the simulation of crack expansion process in slope in- stability and failure process, variation rule of stress intensity factor in the crack expansion process is analyzed. The first crack is assumed at the place most vulnerable to cracks on slope top with critical length and expansion angle determined through fracture toughness, and the slope fracture surface formed by the cut-through cracking basically fits the real situation. The analysis proves the feasibility of such method.
出处
《重庆建筑》
2012年第9期38-40,共3页
Chongqing Architecture
关键词
边坡
裂缝
滑动面
断裂力学
slope
cracks
sliding surface
fracture mechanics
