Supporting structure for preventing hole collapse of cast-in-place pile: Fid-Bau Portal

Supporting structure for preventing hole collapse of cast-in-place pile

CHEN JIAXIANG / JIANG HUAN / ZHONG SHENG

The invention discloses a supporting structure for preventing hole collapse of a cast-in-place pile. The supporting structure comprises a pile hole, and a supporting sleeve and a fixing assembly are installed at the position of a soft soil layer of the pile hole. The supporting sleeve is of a net structure, the upper end and the lower end of the supporting sleeve are open, the fixing assembly is arranged in the supporting sleeve, the supporting sleeve is tightly pressed and fixed to the side wall of the pile hole, and the fixing assembly comprises an adjustable neck ring and a plurality of inserting rods arranged on the neck ring. Through cooperative installation and use of the supporting sleeve and the fixing assembly, the supporting sleeve is installed in the pile hole, the fixing assembly is installed in the supporting sleeve, and the supporting sleeve is fixedly attached to the inner wall of the pile hole by adjusting amplification of the neck ring of the fixing assembly and is inserted into a soil body of the hole wall of the pile hole through the inserting rods of the fixing assembly for fixation. Therefore, hole wall supporting can be effectively carried out on the pile hole through the supporting sleeve to prevent hole collapse, and the construction quality and the construction safety are improved.

本发明公开了一种用于防止灌注桩坍孔的支护结构，包括桩孔，在桩孔的软弱土层位置安装有支撑套筒和固定组件。所述支撑套筒呈网状结构，且支撑套筒上下两端为敞口设置，所述固定组件装设于支撑套筒内，并将支撑套筒压紧并固定在桩孔侧壁上，该固定组件包括可调式的项圈和装设于项圈上的多个插杆。本发明通过支撑套筒和固定组件的配合安装使用，将支撑套筒装设于桩孔内，固定组件装设于支撑套筒内，并通过调节固定组件的项圈放大将支撑套筒固定贴附于桩孔内璧并通过固定组件的插杆插入桩孔孔壁的土体内进行固定，进而可有效通过支撑套筒对桩孔进行孔壁支护防止坍孔，提高了施工质量和施工的安全性。

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