基于离心模型试验和断裂理论的加筋边坡合理布筋方式研究  

STUDY ON REASONABLE DISTRIBUTION OF REINFORCEMENT FOR REINFORCED SLOPE

作　　者：杨锡武[1] 易志坚[1] 

机构地区：[1]重庆交通学院

出　　处：《土木工程学报》2002年第4期59-64,共6页China Civil Engineering Journal

摘　　要：利用离心模型试验研究了下部加密、中间加密 ,全断面均匀加密三种布筋方式的加筋边坡的坡面侧向位移及位移场等变形性态。结果表明 ,中间加密布筋是加筋边坡经济合理的布筋方式。结合离心模型的试验成果 ,用断裂理论分析和解释了加筋在边坡土体剪切破坏过程中的阻裂机理 ,素土边坡和不同布筋方式加筋边坡的变形破坏机理 ,加筋边坡与素土边坡滑动面形状不同的机理 ,以及中间加密布筋是加筋边坡合理布筋方式的机理 ,得出了边坡中下部H/ 3 H/A reasonable distribution of reinforcement for the reinforced slope is proposed in the paper.A test is made to study the influence of reinforcement distribution on the displacement field of shope.The centrifuge modals with different distributions are used in the test.It is indicated that the more or stronger reinforcement arranged at the middle of slope is the more reasonable.It is based on test result and fracture theory to study the mechanism of the shearing failure of a slope.It is concluded that the reasonable distribution of reinforcement is arranged at the middle part from H/3 to H/2 of the slope.

关 键 词：离心模型试验 断裂理论 加筋 边坡 布筋方式 

分 类 号：TU472.34[建筑科学—结构工程]