Construction method for high-efficient preloading of tower column cross beam support

Abstract

The invention relates to the field of bridge engineering, and discloses a construction method the high-efficient preloading of a tower column cross beam support. The method comprises the following steps: S1 making a saddle, a support frame and a tensioning steel cushion; S2, a tower column and a support are built, wherein the tower column is embedded with bracket brackets for supporting the support, and the bracket brackets are supported and erected on the bracket brackets; 3, weld that saddle above the two ends of the horizontal bar, weld the bottom steel plate and the top of the bracket, andwelding the tensioning steel pad at the bottom of the two ends of the bracket; S4, a steel strand is used to pass through a hole reserved in a tensioning steel cushion anchor lower plate, and is overlapped on a saddle seat and sandwiched between side plates of the saddle, and then the steel strand is pulled by a jack to realize preloading of the bracket; S5 Remove the saddle, support frame, tension steel pad, steel strand, jack and other structures, complete the pre-compression of the bracket. The device of the invention has the advantages of simple preparation, ingenious structure, convenient operation, convenient construction and high-altitude operation, and solves the defects of traditional high-altitude operation of preloading technology and large workload of conveying materials up and down.

Description

technical field [0001] The invention relates to the field of bridge engineering, more specifically, to a construction method for efficient preloading of a tower column beam support. Background technique [0002] When constructing the pylon beams of cable-stayed bridges (or suspension bridges), it is necessary to set up supports, and after pre-compressing the supports, formwork is erected to pour the beams between the pylons. The main purpose of the preloaded bracket is to (1) ensure the safety of the bracket and ensure construction safety; (2) eliminate the influence of the inelastic deformation of the foundation and the bracket, and ensure the pouring quality of the cast-in-place concrete structure. [0003] At present, the conventional method of preloading the support of the beam is to use bulk sandbags or water tanks for loading. However, due to the high position of the beams between the tower columns of cable-stayed bridges (or suspension bridges), some of which are eve...

AI Technical Summary

Problems solved by technology

However, due to the high position of the beams between the pylons of cable-stayed bridges (or suspension bridges), some of which are even as high as hundreds of meters, if the above-mentioned conventional methods are used for preloading of supports, bulk sandbags or water tanks, etc., will require a large amount of work to transmit up and down. ,hard to accomplish

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