Deep foundation pit supporting structure

Abstract

The invention relates to the technical field of constructional engineering, in particular to a deep foundation pit supporting structure. The deep foundation pit supporting structure comprises a soil retaining plate, a limiting plate, a water guide plate and a fixing mechanism, during construction, the limiting plate is placed on the edge of the bottom of a foundation pit, an anchor rod penetrates through the limiting plate, the anchor rod is fixed through a gasket and a nut, the soil retaining plate penetrates through the limiting plate through a clamping groove and is attached to the side wall of the foundation pit, and the water guide plate is mounted at the bottom of the foundation pit. The deep foundation pit supporting structure is convenient to mount and dismount, adaptable to different topographic conditions, and high in stability; the construction cost is reduced and the economic benefit is increased; after installation is completed, when the side wall of the foundation pit generates rightward pressure on the soil retaining plate, the vertical part of the limiting plate generates a restraining effect on the soil retaining plate, the limiting plate tensions the anchor rod, a clamping block stretches out of a third cavity and is clamped into soil and stone, the contact area of a fixing block and the soil and stone is increased, then the stabilizing effect of the fixing mechanism is improved, therefore, the supporting effect of the soil retaining plate on the side wall of the foundation pit is improved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a deep foundation pit support structure. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the base elevation and foundation plane size. Before excavation, the excavation plan should be determined according to the geological and hydrological data, combined with the conditions of the buildings near the site, and waterproof and drainage work should be done. If the excavation is not deep, the side slope can be used to stabilize the soil slope, and the slope size is determined according to the relevant construction regulations. For those with deep excavation and nearby buildings, the foundation pit wall support method, shotcrete retaining wall method, and large foundation pit even adopt methods such as underground diaphragm wall and column-type bored pile interlocking to prevent the outer soil la...

AI Technical Summary

Problems solved by technology

[0003] Deep foundation pit support generally adopts the method of shotcrete retaining wall, but this method is costly, takes a long time to construct, and the support materials cannot be reused. Especially when anchor rods are used as the supporting structure, the stability design in complex rings is very difficult. When the stability of the nearby soil and rock is poor, it cannot play a good supporting effect

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