Deep foundation pit supporting structure and deep foundation pit construction method: Fid-Bau Portal

Deep foundation pit supporting structure and deep foundation pit construction method

QIAO XIAODI / SHEN WENHUI / PENSELIN / ZHANG JIANBIN / CHEN PING

The invention provides a deep foundation pit supporting structure and a deep foundation pit construction method.The deep foundation pit supporting structure comprises a plurality of unit plate mechanisms arranged at intervals, the adjacent unit plate mechanisms are connected in an inserted mode, each unit plate mechanism comprises a first-stage groove frame, the first-stage groove frame is provided with a groove opening with a forward opening, and two transverse supporting rod connecting openings which are vertically spaced are fixedly formed in the rear side of the first-stage groove frame; a telescopic mechanism is arranged in the notch, a supporting plate is arranged on the front side of the telescopic mechanism, and the telescopic mechanism is used for driving the supporting plate to move front and back; a first sliding groove extending in the left-right direction is formed in the front side of the supporting plate, and the first sliding groove is of a groove structure with a forward opening. Two extending plates which are spaced left and right are arranged on the front side of each supporting plate; after the supporting plate is jacked on the side wall of the deep foundation pit, the supporting area can be enlarged through the extension plate, the telescopic plate, the rack plate and the storage plate, the area of the supporting plate can be adjusted according to needs, and therefore manpower and material resources are saved, and the supporting effect is improved.

本发明提供深基坑支护结构及深基坑施工方法，包括多个间隔的单元板机构，相邻的单元板机构之间相互插接，每个单元板机构包括一级槽框，一级槽框设有开口朝前的槽口，一级槽框的后侧固定设有两个上下间隔的横支杆连接口；槽口的内部设有伸缩机构，伸缩机构的前侧设有支护板，伸缩机构用于带动支护板前后移动；支护板的前侧上开设有沿左右方向延伸的第一滑动槽，第一滑动槽为开口朝前的凹槽结构；支护板的前侧均设有两个左右间隔的延伸板；当支护板被顶在深基坑的侧壁上之后，通过延伸板、伸缩板、齿条板和收纳板，可扩大支撑的面积，能够根据需要对支护板的面积进行调整，从而达到节省人力和物力，而且还提高了支护的效果。

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