Supporting stand column for foundation pit and construction method of supporting stand column

Abstract

The invention discloses a supporting stand column for a foundation pit and a construction method of the supporting stand column. The construction method comprises the following steps of: 1, preparing a steel tube (21) and a tapered base (22), wherein the lower port of the steel tube (21) is fixedly connected with the upper port of the tapered base (22) in a sealing manner so that the steel tube (21) and the tapered base (22) are matched with each other to form an insertion part (20), and an inner hole of the steel tube (21) and an upward tapered cavity of the tapered base (22) are matched to form an inner cavity (23); 2, drilling and pouring concrete so as to form a caisson pile (10); 3, inserting the insertion part (20) before the caisson pile (10) is condensed finally and inserting the lower part of the insertion part (20) into the caisson pile (10); and 4, pouring concrete into the inner cavity (23) of the insertion part (20).

Description

technical field [0001] The invention relates to a support column for a foundation pit and a construction method thereof, in particular to a temporary support column for a foundation pit that can be used in a forward method and a reverse method and a construction method thereof. Background technique [0002] There are two main construction methods for deep foundation pit engineering: one is to adopt the forward method of retaining wall + inner support, and the other is to adopt the reverse method of adopting retaining wall + structural floor. Among them, both the internal support and the structural floor have vertical support members as support columns, so the support columns are important components in deep foundation pit engineering. [0003] The structural forms of traditional support columns mainly include large-diameter steel pipe concrete columns, steel lattice columns, and steel columns. The structural forms of these traditional supporting columns have the following d...

AI Technical Summary

Problems solved by technology

The structural forms of these traditional supporting columns have the following deficiencies: 1. The amount of steel used is very large, and the bearing capacity exceeds the actual needs by a lot (such as large-diameter steel pipe concrete columns and steel lattice columns); 2. Either the bearing capacity is too low to Meet the requirements of multiple supports (such as steel columns); 3. Large-diameter steel pipe columns still have the disadvantage of complex beam-column joints

In short, the traditional support column structure has the disadvantages of low bearing capacity and low cost performance of steel consumption

Images