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土层锚杆,简称土锚,由受拉杆件和锚固体两部分组成,是岩土工程中较常应用的一种锚固技术。其作用机理是一端受拉杆件通过腰梁或压顶梁与围护桩(墙)联结,另一端锚固体将锚杆承受的荷载通过锚固区握裹力传递到周边稳定地层中。土层锚杆是基坑支护结构主要的组成部分,常与地下连续墙、拉森钢板桩、灌注桩、旋喷桩等共同使用,广泛应用于深基坑支护中。随着基坑深度和宽度的不断扩大,悬臂式围护结构或内撑式围护结构显得越来越不经济,在这种情况下,采用拉锚式围护结构,
Soil anchor, referred to as soil anchor, by the tension rod and anchor two parts, geotechnical engineering is more commonly used in anchoring technology. The action mechanism is that one end is connected to the retaining pile (wall) through the waist beam or the pressure-top beam by one end of the tension rod, and the load sustained by the anchor by the anchor at the other end is transmitted to the surrounding stable stratum through the anchoring zone. Soil anchor is a major part of the foundation pit supporting structure, often used together with underground diaphragm wall, Larsen steel sheet pile, bored pile and rotary jet grouting pile. It is widely used in deep foundation pit support. With the deepening of the depth and width of the foundation pit, it is more and more uneconomical to construct a cantilever enclosure structure or an internal support enclosure structure. Under such circumstances,