Cement mixing pile composite supporting system provided with peripheral concrete members

Abstract

The invention relates to a foundation pit supporting system, in particular to a cement mixing pile composite supporting system. The cement mixing pile composite supporting system provided with peripheral concrete members comprises composite piles, concrete trusses and steel inclined struts, wherein the composite piles are arranged around foundation pits, the concrete trusses are respectively arranged at top parts of the composite piles, and the steel inclined struts are respectively arranged between bottoms of foundation pits of each two composite piles. The cement mixing pile composite supporting system provided by the invention is higher in tensile strength and bending resistance.

Description

technical field [0001] The invention relates to a foundation pit support system, in particular to a cement mixing pile composite support system. Background technique [0002] Most of the foundation pits of metallurgical hot rolling projects are super-large and complex deep foundation pits, and the surrounding areas of the construction are mostly open areas. The requirements for the deformation of the foundation pits are not strict, so the main part basically adopts the idea of ​​sloping excavation for earthwork excavation. However, in recent years, due to the shortening of the commissioning period, the supporting substations close to the main project are often constructed first, which makes it impossible to carry out grading excavation of this part of the foundation pit. [0003] If simple cement mixing piles are used, the low tensile strength of cement mixing piles will cause the width to be too large to be used in a narrow space; if single-row concrete pouring piles + part...

AI Technical Summary

Problems solved by technology

However, in recent years, due to the shortening of the commissioning period, the supporting substations close to the main project are often constructed first, which makes it impossible to carry out grading excavation of this part of the foundation pit

[0003] If simple cement mixing piles are used, the low tensile strength of cement mixing piles will cause the width to be too large to be used in a narrow space; if single-row concrete pouring piles + partition excavation method is used, due to the weak bending resistance of the top concrete crown beam, the opening The excavation partition is relatively small, which affects the construction period and even cannot be constructed because the partition is too small; if a single row of cast-in-situ piles + anchor support is used, the anchor is easy to collide with the foundation of the building on the side, and the construction cost is huge

Images