扩大头锚索在成都膨胀土深基坑支护中的应用

Application of Bit-Expanded Anchor Cable in Chengdu Expansive Soil Deep Foundation Pit Support

由于成都膨胀土的特殊性,深基坑支护中采用普通锚索易失效,难以达到支护效果,基坑支护时设计方案受限。通过对普通锚索与扩大头锚索特点对比分析后,以成都膨胀土深基坑支护为例,采用排桩和扩大头锚索的设计方案,可有效适用于此类深基坑支护。根据实施效果,总结了扩大头锚索优点,为今后开展类似工作提供了一定的借鉴。

Due to the particularity of expansive soil in Chengdu,ordinary anchor cables used in deep foundation pit support are likely to fail and hardly effective,allowing limited design schemes for the foundation pit support.This paper has comparatively analyzed the characteristics of ordinary and bit-expanded anchor cables,and has then shown that the soldier pile wall and the bit-expanded anchor cables can be effectively applied as the support of,for example,Chengdu expansive soil deep foundation pit.The advantages of such anchor cables are summarized in this document according to the implemen-tation effects to provide a reference for similar work in the future.