预应力锚索抗滑桩工程中锚索拉力实测与分析  

Measuring and Analyzing Tension Force of Anchor Cable in Anti-slide Pile with Pre-stressed Anchor Cable

作　　者：张玉芳[1] 李奇平 张治平[1] 

机构地区：[1]铁道科学研究院深圳市铁科岩土工程有限公司,广东深圳518034 [2]广东省公路工程建设集团有限公司,广东广州510635

出　　处：《中国铁道科学》2003年第3期21-25,共5页China Railway Science

摘　　要：为研究分析锚索桩的力学性状,对深圳市黄贝岭滑坡治理的锚索桩进行了长期的原型测试。由测试结果分析得出:锚索拉力随时间的变化可分为三个阶段,即锚索拉力迅速减小阶段、锚索拉力缓慢变化阶段和锚索拉力的稳定阶段,锚索拉力缓慢变化阶段中锚索拉力的增大或减小取决于预应力长期损失和滑坡推力之间作用的结果;抗滑桩的作用过程可划分为三个状态,即锚索的张拉锁定状态(状态Ⅰ)、最大滑坡推力作用状态(状态Ⅱ)和设计所允许的状态(状态Ⅲ)。锚索桩的整个作用过程就是由状态Ⅰ,经过状态Ⅱ,逐渐向状态Ⅲ发展。设计锚索、桩、桩锚共同作用的结构安全度应该相互匹配,协调一致,使锚索桩的作用发挥最大效果。In order to research the mechanics status of the anchor pile, the model of anchor pile used to control the Hangbeiling lands lide in Shenzhen was inspected and tested for a long time. The result shows that the change of anchor tension is divided into three phases: anchor tension decr eases quickly, anchor tension changes slowly, anchor tension stays steady. In th e phase that anchor tension changes slowly, the change occurs due to the interac tion of the long pre-stressed force loss of anchor tension and the landslide fo rce. The impact process of the anti-slide pile is divided into three statuses: the anchor is tensioned and then fastened (StatusⅠ); the largest landslide forc e is impacted (StatusⅡ); and the design limitation (Status Ⅲ). The whole impac t process of anchor pile can transfer from Status Ⅰ to Status Ⅱ and then to St atus Ⅲ gradually. The structure safety factor of the interaction of anchor cabl e,pile and pile anchor, should match and well coordinated to achieve the best ef fect.

关 键 词：滑坡治理 预应力锚索 抗滑桩 长期监测 

分 类 号：TU753.8[建筑科学—建筑技术科学]