压力分散型锚索在地质灾害应急抢险工程中的应用

Application of Pressure Decentralized Anchor Cable in Emergency Response to Geological Disaster

摘要:

压力分散型锚索有效地避免了锚固段应力集中、钢绞线受力不均而导致某些锚固段上的钢绞线过早拉断的现象，受力性能更加合理，工程适用性广。近年来，压力分散型锚索在高边坡，特别是破碎岩体边坡加固方面得到了越来越多的应用，并取得了良好的加固效果。以广州南沙某地质灾害应急抢险工程为例，通过现场分散型锚索极限抗拉拔试验提出设计原则和设计值，并详细介绍了压力分散型锚索的施工工艺。

Abstract:

Pressure decentralized anchor cable has more rational stress performance and extensive engineering applicability, with which stress concentration in anchorage section and too early steel strand tensile failure caused by unevenly stressing can be avoided. It was applied more and more in fractured rock slope reinforcement in recent years with ideal effect. Based on an engineering case of emergency response to geological disaster in Guangzhou, the paper put forward the design principle and value according to the ultimate resistance of pull-out test on pressure decentralized anchor cable, and detailed the construction technology.