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大直径可回收锚索作为一种新型的基坑支护形式,将高压旋喷桩技术应用于锚杆技术中,并对锚杆端部构造进行创新,形成了独特的土层锚固成套技术,有效地解决了软土地区传统锚杆应用的难题。大直径可回收锚索属于压力型锚索,具有传统锚索所缺乏的高承载力以及可回收的两大优势,近年来在软土地区得到大量应用和推广。结合大直径可回收锚索在工程中的设计与实践,对其施工工艺、构造及设计计算进行了总结,并根据现场试验结果,采用数值模拟分析手段,分析得到了大直径可回收锚索的锚固体摩阻力、轴力以及变形承载特性的一些初步结果。最后介绍了大直径可回收锚索在无锡综合交通枢纽的工程应用,为软土地区类似工程项目提供参考。
Large diameter recoverable anchor cable as a new type of foundation pit support, the high pressure jet grouting pile technology in the application of technology, and bolt end of the structure innovation, forming a unique soil anchoring package technology, It effectively solves the problem of traditional anchor application in soft soil area. Large diameter recoverable anchor cable belongs to the pressure type anchor cable, which has the two advantages of high bearing capacity and recyclability lacking in the traditional anchor cable. In recent years, it has been widely used and popularized in the soft soil area. Combined with the design and practice of large diameter recoverable anchor cable in engineering, the construction technology, structure and design calculation are summarized. Based on the field test results, numerical simulation analysis method is used to analyze the large diameter recoverable anchor cable Some Preliminary Results of Anchors’ Frictional Resistance, Axial Force and Deformation Load Characteristics. Finally, the engineering application of large-diameter recoverable anchor cables in Wuxi comprehensive transportation hub is introduced, which can provide reference for similar projects in soft soil areas.