Multi-cable recyclable anchor cable head connecting device

Abstract

The invention relates to a multi-cable recyclable anchor cable head connecting device, which overcomes the defects that in the existing inner support construction, the displacement is possibly generated between a foundation pit support and protection wall and two ends of a foundation pit support element, and the stability of the foundation pit support element and the safety of a foundation pit are influenced. The multi-cable recyclable anchor cable head connecting device comprises anchor cables and a support plate, wherein the support plate is positioned in a deep hole, a plurality of connecting screw nuts with one sealed ends are symmetrically and fixedly arranged on the support plate, one connecting screw nut is matched with one anchor cable, the end part of the anchor cable is fixedly provided with a connecting head, the end part of the connecting head is provided with external screw threads, the external threaded end is screwed with each connecting screw nut, a protecting pipe is sheathed outside each anchor cable, and one end of the protecting pipe in the soil layer is in sealed sheathing with each connecting screw nut. The connecting screw nuts are fixedly arranged on the support plate, and the same one support plate can be connected with a plurality of anchor cables, so the tensile resistance in the same deep hole can be enhanced, in addition, the number of the anchor cables is regulated according to the required tensile resistance, the separated processing and the combined welding fixation of the support plate and the connecting screw nuts are adopted, the processing and the connection are very convenient, and the cost is very low.

Description

technical field [0001] The invention relates to a deep foundation pit support structure, in particular to a multi-cable retrievable anchor cable head connection device which arranges multiple anchor cables in the same deep hole and can recover all the anchor cables without generating underground obstacles. Background technique [0002] With the acceleration of urban construction, the urban land is becoming increasingly scarce, and buildings are getting taller. Almost every building has deep foundation pit support engineering, including underground construction. [0003] The deep foundation pit support factory often adopts the internal support construction method and the external tension anchor cable construction method. The inner support construction method is supported on both sides of the foundation pit by the foundation pit support. The two ends of the foundation pit support are generally connected by contact. Road foundation pit support, the setting of the foundation pi...

AI Technical Summary

Problems solved by technology

[0006] The invention solves the defects that the two ends of the foundation pit support and the support wall of the foundation pit may be displaced during the existing internal support construction, which affects the stability of the foundation pit support and the safety of the foundation pit, and provides a multi-cable The anchor cable head connection device can be recovered to form an externally pulled anchor cable structure. The anchor cable goes deep into the soil layer, and the exposed end of the anchor cable is fixedly connected with the purlin of the supporting wall to ensure the stability of the supporting wall of the foundation pit and improve the foundation pit. security

[0007] The invention also solves the problem that the anchor cable is integrated with the soil layer grouting in the existing external pull anchor cable construction, which is not easy to disassemble and becomes a hidden obstacle in the soil layer, which affects the subsequent construction around the foundation pit, and provides a multi-cable recyclable Anchor cable head connection device, the outside of the anchor cable is not bonded to the grouting, and one end of the anchor cable inside the soil layer is threaded for easy disassembly without any residual obstacles

[0008] The present invention also solves the problem that the recovery of the existing externally pulled anchor cables requires equipment capable of generating a large force and requires a relatively large space for placing the equipment. The disadvantage of convenience is to provide a multi-cable retrievable anchor cable head connection device, which does not need to use the same kind of equipment to generate the force of pulling the anchor cable when disassembling, and does not need to be fixed and supported externally, so the space requirement outside the anchor cable Small

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