基坑开挖时切断支护锚索的施工方法

A NEW CONSTRUCTION METHOD OF CUTTING ANCHOR CABLE WHILE THE EXCAVATION OF FOUNDATION PIT

随着城市化进程的不断加快,每年有数以万计的钢材通过基坑支护锚索被埋于地下。埋藏于地下的锚索不仅造成了资源的浪费,同时也对邻近新建基坑的施工产生不利影响。本文介绍了一种基坑开挖时切断支护锚索的新型施工方法。具体是通过施工钻孔灌注桩和人工挖孔桩等,在满足规范要求强度的情况下,对锚索进行先切断后回收的处理。结合具体工程可以验证,这种施工方法切实可行、成本低廉且安全环保。

With the urbanization in China, tons of steel were buried underground through the meth od of anchor support construction. The buried cable is not only a waste of resource, but also has a nega tive effect on the new foundation pit nearby. This paper proposed a new construction method of cutting anchor cable while the excavation of foundation pit. By the construction of manual excavation pile and castinplace pile, the anchor cable will be cut and recycled on the premise of the requirements of speci fication. This new method was confirmed to be feasible, cheap, safe, and environmental by an engineer ing practice.