Flexible steel strand cage for underground diaphragm wall capable of self-adaptive slotting and deflection and its construction method

Abstract

The invention relates to a flexible steel strand cage of an underground diaphragm wall self-adaptive to trough deflection. The flexible steel strand cage comprises steel strands, a plurality of steel strand positioning discs and X-type diagonal draw steel bars. Steel strand perforated holes are formed in the plurality of steel strand positioning discs, and a group of steel strands vertically penetrate through the plurality of steel strand positioning discs in a spaced manner; a counterweight is fixed on the bottom steel strand positioning disc, and a clamp for clamping and locking the steel strands is arranged on the top steel strand positioning disc; and the X-type diagonal draw steel bars are fixed on two side faces between adjacent steel strand positioning discs. By replacing a conventional reinforcement cage which is relatively great in rigidity with the flexible steel strand cage, deflection of the trough can be self-adapted. Compared with a conventional trough deflection treatment mode, the flexible steel strand cage provided by the invention can quickly and economically treat the deflection problem; and the flexible steel strand cage can reach proper rigidity as needed.

Description

technical field [0001] The invention relates to the construction of an underground diaphragm wall in a foundation pit engineering, in particular to a flexible steel strand cage for an underground diaphragm wall capable of self-adapting to the deflection of grooves and an implementation method thereof. Background technique [0002] Due to its high rigidity and good water-stop effect, the underground diaphragm wall is often used as a force-bearing and water-cutting enclosure structure for deep and large foundation pits. Current slotting construction machines include grab bucket slotting machines, impact slotting equipment, hydraulic slotting machines and multi-head drilling slotting machines. In the current construction practice, due to the manufacturing process error of the groove forming machine, the uneven center of gravity and the difference in soil properties, the groove of the underground diaphragm wall is likely to be deflected, making it difficult to control the vertic...

AI Technical Summary

Problems solved by technology

In the current construction practice, due to the manufacturing process error of the groove forming machine, the uneven center of gravity and the difference in soil properties, the groove of the underground diaphragm wall is likely to be deflected, making it difficult to control the verticality of the vertical direction of the groove wall when forming the groove. As a result, after the underground diaphragm wall is grooved, there will be a deflection perpendicular to the direction of the groove wall, making it difficult to lower the pre-bound steel cage

[0003] The current conventional processing methods are mainly right and left: one is to control the quality of the groove during the groove forming process, and use the deviation correction device built in the groove forming machine to correct the deviation in the process, but the deviation correction ability is limited; the other is to use backfill reinforcement Afterwards, the deflection treatment is carried out by re-grooving. This processing method is time-consuming, consumable, and labor-intensive. Moreover, when the groove is re-grooved, the stability of the groove wall is poor, and the surrounding environment is affected by the uneven reaction force of the soil. larger

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