可回收式土钉锚杆在地铁基坑支护工程中的应用研究

摘要

This paper analyzes the soil anchoring technology, which uses concept of high-density friction. Through the numerical simulation, a suitable bolt construction is created. The testes in Xi'an subway line of TJSG-4 Sections prove the reliability of the bolting technology.%在对土层的锚杆技术进行锚固机理分析的基础上,采用高密度挤压摩擦锚固的理念设计自旋式锚杆.通过对自旋锚杆锚固机理的研究并结合数值模拟分析,设计出适合砂土层施工的锚杆.在西安地铁2#线TJSG-4标段的基坑支护中经过工业试验,证明了该锚杆支护技术的可靠性.