Prestressed steel wire rope tensioning system and method

Abstract

The invention discloses a prestressed steel wire rope tensioning system which comprises an anchor plate, and the anchor plate is fixed to a structure to be reinforced through embedded steel bars. A tensioning support is arranged on one side of the anchor plate. The tensioning system further comprises a plurality of main threaded rods parallel to one another. One end of each main threaded rod is connected with a threaded sleeve, and the threaded sleeve is connected with a steel wire rope. The other end of each main threaded rod penetrates through an opening formed in the anchor plate, then is fixed through an anchorage nut and is provided with a connection sleeve. Each connection sleeve is connected with one end of an auxiliary threaded rod. The other end of each auxiliary threaded rod penetrates through the tensioning support and is fixed to the outer side of the tensioning support through a tensioning nut. A force sensor is arranged between the tensioning nut and the tensioning support. The multiple steel wire ropes can be anchored through one anchor plate, and the reinforcing efficiency and effect of an existing structure are greatly improved.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a prestressed steel wire rope tensioning system and method. Background technique [0002] Due to the influence of material aging, construction quality, natural or man-made factors, many existing hollow slab structures of bridges and houses need to be repaired and reinforced urgently, and countries all over the world spend huge sums of money on this every year. Existing structural reinforcement technologies mainly include enlarging section method, bonding steel reinforcement method, pasting fiber composite material reinforcement method, adding fulcrum reinforcement method, steel strand mesh-polymer mortar reinforcement method, etc. The existing reinforcement methods mainly have the following problems: (1) There is a stress hysteresis effect between the reinforcement material and the original component, and the ability to work together is poor, which greatly affects the reinforceme...

AI Technical Summary

Problems solved by technology

The existing reinforcement methods mainly have the following problems: (1) There is a stress hysteresis effect between the reinforcement material and the original component, and the ability to work together is poor, which greatly affects the reinforcement effect; (2) The anchorage length at the end of the reinforcement material is not enough, and it is easy to find Peeling damage, can not give full play to the strength of the material; (3) increase the cross-sectional size of the original component, increase the self-weight, affect the view and use

However, the tensioning device and method of the existing prestressed steel wire rope reinforcement technology are not mature enough, and there are problems of inconvenient use, difficult installation and low efficiency in engineering applications

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