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

XU TONG / XIE CHENGYANG / XU DAFENG / LEI CHAO / LIU HONGZHI

The invention discloses a deep foundation pit supporting structure and a deep foundation pit construction method.The deep foundation pit supporting structure comprises supporting mechanisms and supporting mechanisms, the supporting mechanisms are arranged in pairs and supported on the opposite wall faces of a deep foundation pit, and each supporting mechanism comprises a first supporting plate assembly and a second supporting plate assembly which can rotate around the same axis; the first supporting plate assembly is used for supporting the side wall face of the deep foundation pit and can extend along the side wall face, the second supporting plate assembly is used for supporting the bottom wall face of the deep foundation pit and can extend along the bottom wall face, and therefore the supporting mechanism can adapt to foundation pits of different specifications, and the supporting mechanism is connected to the first supporting plate assembly. The supporting mechanisms arranged oppositely provide jacking force through the hydraulic telescopic rods, so that the overall safety of the supporting structures at the corresponding positions is improved, local stress changes of the deep foundation pit are monitored through the detection devices arranged on the supporting mechanisms, and sudden change of the local stress can be timely prevented in advance.

本发明公开了一种深基坑支护结构及深基坑施工方法，包括支护机构和支撑机构，支护机构成对设置并支护于深基坑的相对壁面，支护机构包括可绕同一轴线转动的第一支护板组件和第二支护板组件，第一支护板组件用于支护深基坑的侧壁面并可沿侧壁面延伸，第二支护板组件用于支护深基坑的底壁面并可沿底壁面延伸，从而能适应不同规格的基坑，支撑机构连接于第一支护板组件上，相对设置的支撑机构之间通过液压伸缩杆提供顶紧力，从而提高对应位置支护结构的整体安全性，并通过支撑机构上设置的检测装置监测深基坑的局部应力变化，能及时对局部应力突变做到提前防范。

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