Structure for converting foundation pit temporary soil nail into basement exterior wall permanent soil nail

Abstract

The invention provides a structure for converting a foundation pit temporary soil nail into a basement exterior wall permanent soil nail. The end of the foundation pit temporary soil nail is exposed out of a foundation pit slope surface, and the structure is characterized in that a connecting steel bar is arranged between the end of the foundation pit temporary soil nail and a basement exterior wall, a sleeve is arranged outside the connecting steel bar, and concrete or grout is injected into the sleeve so that the connecting steel bar is effectively connected with the end of the temporary soil nail and the basement outer wall. When a foundation pit is excavated, the soil nail is used for keeping the safety of the foundation pit, and after steel bars of the basement outer wall are bound, asection of new steel bar and sleeve is connected between a threaded sleeve at the end of the soil nail and the basement outer wall and used for connecting the temporary soil nail and the outer wall.Finally, soil is backfilled between the foundation pit and the outer wall, so that the foundation pit temporary soil nail is connected with the outer wall through newly-connected steel bar, the outerwall is tied, the thickness and steel consumption of the basement outer wall can be effectively reduced, the basement building area is increased, the construction cost is reduced, and a good economiceffect is achieved.

Description

technical field [0001] A structure that converts temporary soil nails in foundation pits into permanent soil nails for basement exterior walls. It is suitable for the case where the exterior walls of the basement and the soil nail wall are used for the foundation pit, and it is effective for the case of high basement floors or cantilevered basement exterior walls. better. Background technique [0002] At present, the exterior wall of the basement is placed on the floor slab, and the larger the span, the greater the thickness and the amount of steel used. Especially when the upper part of the basement is open, the outer wall becomes a cantilever structure with greater thickness and steel consumption, which is extremely economical. The foundation pit project is a temporary project, and generally the cost is high. Once the main body of the basement is constructed, the foundation pit is worthless. Therefore, how to make greater use of the temporary foundation pit and optimize t...

AI Technical Summary

Problems solved by technology

Especially when the upper part of the basement is open, the outer wall becomes a cantilever structure with greater thickness and steel consumption, which is extremely economical

The foundation pit project is a temporary project, and generally the cost is high. Once the main body of the basement is constructed, the foundation pit is worthless. Therefore, how to make greater use of the temporary foundation pit and optimize the cost of the basement exterior wall has become an innovative direction

Images