Supporting device for deep foundation pit slope and construction method: Fid-Bau Portal

Supporting device for deep foundation pit slope and construction method

WANG XIAODONG / ZOU YANG / SONG JIANGFENG / WANG BINGFEI / LI DEZHEN / ZHANG TAO

The invention relates to a supporting device for a deep foundation pit slope and a construction method, and relates to the field of foundation pit supporting, the supporting device for the deep foundation pit slope comprises a spiral supporting steel layer, the spiral supporting steel layer comprises multiple sections of surrounding steel, the surrounding steel is obliquely arranged, and the multiple sections of surrounding steel are sequentially connected and jointly surround in a spiral shape; the inclination angle of the surrounding steel is alpha, the height of the foundation pit is h, the perimeter of the foundation pit is c, and the calculation formula of the inclination angle/height and the perimeter is tan alpha > h/3c; a fixing assembly is connected between the surrounding steel and the side slope. The spiral supporting steel layer forms a whole, so that as long as external force is applied to a certain point on the spiral supporting steel layer by the slope, the whole spiral supporting steel layer can resist the applied external force, the protection of the whole slope is integrated, and the external force is difficult to damage the slope.

本申请涉及一种深基坑边坡用支护装置及施工方法，涉及基坑支护的领域，其包括螺旋支护钢层，螺旋支护钢层包括多段围设钢，围设钢倾设置，多段围设钢依次连接，共同围设呈螺旋状；围设钢的倾斜角度为α，基坑的高度为h，基坑的周长为c，倾斜角度/高度与周长的计算公式如下：tanα＞h/3c；所述围设钢与边坡之间连接有固定组件。本申请具有螺旋支护钢层形成一个整体，则只要螺旋支护钢层上的某一点被边坡施加外力，则整个螺旋状的螺旋支护钢层都能够对施加的外力进行抗衡，整个边坡的保护成为一体，外界施力很难对边坡形成破坏的效果。

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