Fabricated steel-concrete combined supporting structure for building deep foundation pit: Fid-Bau Portal

Fabricated steel-concrete combined supporting structure for building deep foundation pit

JIANG MINGQING

The invention relates to the technical field of foundation pit supporting, in particular to a building deep foundation pit assembly type steel-concrete combined supporting structure which comprises I-shaped steel and two steel bar meshes, the two steel bar meshes are arranged on the two sides of the I-shaped steel respectively, the two ends of the I-shaped steel are connected with connecting flanges, the two sides of the I-shaped steel are filled with micro-expansion concrete, and the two sides of the I-shaped steel are filled with micro-expansion concrete. Tensile pieces are arranged in the micro-expansive concrete fillers, the I-shaped steel comprises two flange plates and a web, the two flange plates are fixed to the two sides of the web, the two sides of the web are matched with the two flange plates to form filling areas, the micro-expansive concrete fillers are poured into the two filling areas respectively, and the micro-expansive concrete fillers are arranged in the micro-expansive concrete fillers. The tensile piece is a steel bar mesh composed of longitudinal main bars, vertical joint bars and transverse tie bars, and the steel bars are pre-welded in the two filling areas of the I-shaped steel. The steel pipe column can be repeatedly used, construction is convenient, and the steel pipe column has super-strong bearing capacity.

本发明涉及基坑支护技术领域，具体涉及一种建筑深基坑装配式钢混组合支撑结构，包括工字钢、两个钢筋网片，两个所述钢筋网片分别设置于工字钢两侧，所述工字钢两端均连接有连接法兰，所述工字钢两侧均有微膨胀混凝土填充，所述微膨胀混凝土填充内均设有抗拉件，所述工字钢包括两个翼缘板以及一个腹板，两个翼缘板固定于腹板两侧，所述腹板两侧配合两个翼缘板均形成有填充区，所述微膨胀混凝土填充分别浇筑于两个填充区，所述抗拉件为纵向主筋、竖向插筋与横向拉筋组成的钢筋网片，所述钢筋预焊接于工字钢两个填充区内。本发明，可重复使用，施工方便，且具有超强的承载力。

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