Building foundation pit three-dimensional supporting system and construction method thereof: Fid-Bau Portal

Building foundation pit three-dimensional supporting system and construction method thereof

SHEN SHIZHONG / TENG ZHIWU / LIN YINGYING

The invention discloses a building foundation pit three-dimensional supporting system which is characterized in that girders are transversely and fixedly erected on supporting piles around a foundation pit, anchor rods are connected to the girders at intervals, the anchor rods stretch into a soil body in a cable-stayed mode, structural steel is arranged in blocking parts in a driving mode to form reinforcing parts, and metal connecting parts pre-embedded in the supporting piles are provided with threaded holes; the bolt is fixedly connected with the metal connecting piece in a threaded mode, concrete is poured in the metal U-shaped piece to form a concrete solidification body, and the anchor rod, the connecting piece and the metal U-shaped piece are fixed into a whole through the concrete solidification body. The invention further discloses a construction method of the supporting system. According to the supporting system and the construction method thereof, the three-in-one supporting system of the supporting piles, the anchor rods and the cement-soil stirring body can be rapidly formed, the anchor rods can be rapidly pre-tightened in batches, the girders tied by the anchor rods can also be rapidly formed through an assembly type structure and formwork-free pouring, and rapid construction is facilitated to form a stable three-dimensional supporting structure.

本发明公开一种建筑物基坑立体支护系统，基坑周围的支护桩上横向固定架设有围梁，围梁上间隔连接有锚杆，锚杆斜拉深入土体中，阻挡部中打设有型钢构成加固件，支护桩上预埋的金属连接件上带螺纹孔，螺栓与金属连接件螺纹连接固定，混凝土浇筑在金属U形件内形成混凝土凝固体，锚杆、连接件和金属U形件通过混凝土凝固体固定一体。本发明还公开一种上述支护系统的施工方法。上述支护系统及其施工方法能够快速形成支护桩、锚杆和水泥土搅拌体三位一体的支护体系，能够快速对锚杆成批量进行预紧，锚杆拉结的围梁也能够通过装配式构造和无模板浇筑快速成型，有利于快速施工形成稳定的立体支护结构。

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