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Large-span deep foundation pit steel-concrete combined supporting structure and construction method thereof
The invention relates to a large-span deep foundation pit steel-concrete combined supporting structure and a construction method thereof. The large-span deep foundation pit steel-concrete combined supporting structure comprises profile steel enclosing purlins arranged on the edge of a foundation pit; the concrete side truss structures are arranged on the two opposite sides of the foundation pit; the profile steel supports are connected between the oppositely arranged concrete fringe truss structures in a supporting manner; the multiple profile steel angle braces are obliquely arranged at the corners of the foundation pit in a supporting mode, and the ends of the profile steel angle braces are connected with the corresponding profile steel enclosing purlins and the concrete fringe truss structures; and the axial force servo system is connected to the profile steel support and the profile steel angle brace and is used for applying axial force to the profile steel support and the profile steel angle brace. The concrete fringe truss structure has good deformation control capacity and serves as a force transmission buffer strip between the prestressed profile steel support and the enclosure structure coping beam, and the problems that a foundation pit cracks, bends, inclines and the like due to the fact that concentrated axial force is too large are solved.
本发明涉及一种大跨度深基坑钢‑混组合支撑结构及其施工方法，包括：设于基坑边缘的型钢围檩；设于基坑相对两侧的混凝土边桁架结构；支撑连接在相对设置的混凝土边桁架结构之间的型钢支撑；斜向支撑设置在基坑角部的多道型钢角撑，所述型钢角撑的端部与对应的型钢围檩和混凝土边桁架结构连接；连接在所述型钢支撑和所述型钢角撑上的轴力伺服系统，用于对所述型钢支撑和所述型钢角撑施加轴力。本发明采用的混凝土边桁架结构具有较好的控制变形能力，作为预应力型钢支撑与围护结构压顶梁之间的传力缓冲带，避免集中轴力过大导致基坑产生开裂、弯曲、倾斜等问题。
Large-span deep foundation pit steel-concrete combined supporting structure and construction method thereof
The invention relates to a large-span deep foundation pit steel-concrete combined supporting structure and a construction method thereof. The large-span deep foundation pit steel-concrete combined supporting structure comprises profile steel enclosing purlins arranged on the edge of a foundation pit; the concrete side truss structures are arranged on the two opposite sides of the foundation pit; the profile steel supports are connected between the oppositely arranged concrete fringe truss structures in a supporting manner; the multiple profile steel angle braces are obliquely arranged at the corners of the foundation pit in a supporting mode, and the ends of the profile steel angle braces are connected with the corresponding profile steel enclosing purlins and the concrete fringe truss structures; and the axial force servo system is connected to the profile steel support and the profile steel angle brace and is used for applying axial force to the profile steel support and the profile steel angle brace. The concrete fringe truss structure has good deformation control capacity and serves as a force transmission buffer strip between the prestressed profile steel support and the enclosure structure coping beam, and the problems that a foundation pit cracks, bends, inclines and the like due to the fact that concentrated axial force is too large are solved.
本发明涉及一种大跨度深基坑钢‑混组合支撑结构及其施工方法，包括：设于基坑边缘的型钢围檩；设于基坑相对两侧的混凝土边桁架结构；支撑连接在相对设置的混凝土边桁架结构之间的型钢支撑；斜向支撑设置在基坑角部的多道型钢角撑，所述型钢角撑的端部与对应的型钢围檩和混凝土边桁架结构连接；连接在所述型钢支撑和所述型钢角撑上的轴力伺服系统，用于对所述型钢支撑和所述型钢角撑施加轴力。本发明采用的混凝土边桁架结构具有较好的控制变形能力，作为预应力型钢支撑与围护结构压顶梁之间的传力缓冲带，避免集中轴力过大导致基坑产生开裂、弯曲、倾斜等问题。
Large-span deep foundation pit steel-concrete combined supporting structure and construction method thereof
大跨度深基坑钢-混组合支撑结构及其施工方法
HE JUN (author) / HAN LEI (author) / JIANG SHUAI (author) / ZHANG HONGKUAN (author) / CHAI XIAOMING (author) / WANG XIUPU (author) / NI CHEN (author)
2024-12-13
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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