Built-in reinforcing mesh connecting structure for reinforced concrete support of building deep foundation pit: Fid-Bau Portal

Built-in reinforcing mesh connecting structure for reinforced concrete support of building deep foundation pit

LU WEI / ZHANG JIAHUI / QIAN JUN

The invention relates to the technical field of building foundation pit reinforced concrete supports, in particular to a building deep foundation pit reinforced concrete support built-in reinforcing mesh connecting structure which comprises H-shaped steel and two reinforcing meshes, the two reinforcing meshes are fixed to the two sides of the H-shaped steel respectively, and connecting flange plates are welded and fixed to the two ends of the H-shaped steel. The H-shaped steel is provided with a web plate and two flanges, the web plate is welded between the two flanges, the two reinforcing meshes are arranged on the two sides of the web plate respectively, the reinforcing meshes are prefabricated parts, the prefabricated reinforcing meshes are fixed to the two sides of the H-shaped steel through welding or binding, and a plurality of reinforcing ribs are welded between the connecting flange plate and the H-shaped steel. The reinforcing mesh is composed of a plurality of transverse ribs and a plurality of vertical ribs. According to the invention, the degree of adhesion between the concrete and the H-shaped steel is increased, the shrinkage of the concrete is also limited, the effect of preventing the concrete from cracking can be achieved, and the service life of the whole steel-concrete support is further prolonged.

本发明涉及建筑基坑钢混支撑技术领域，具体涉及一种建筑深基坑钢混支撑内置钢筋网片连接结构，包括H型钢、两个钢筋网片，两个所述钢筋网片分别固定于H型钢两侧，所述H型钢两端均焊接固定有连接法兰板，所述H型钢具有一个腹板、两个翼缘，所述腹板焊接于两个翼缘之间，两个钢筋网片分别设置于腹板两侧，所述钢筋网片为预制件，预制完毕后的钢筋网片通过焊接或绑扎固定于H型钢两侧，所述连接法兰板与H型钢之间焊接有多个加强筋，所述钢筋网片由多个横筋、多个竖筋组成。本发明，增加混凝土与H型钢之间的粘合度，还限制了混凝土的收缩，能够起到防止混凝土开裂的作用，进一步增加整个钢混支撑的使用寿命。

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