Integral formwork low hanging method for bridge hanging basket construction

Abstract

The invention discloses an integral formwork low hanging method for bridge hanging basket construction. The method particularly comprises the following steps that S1, the stranded steel wire feeding length is determined; S2, reserved anchoring holes which vertically penetrate through a bridge body are set; S3, stranded steel wires are threaded to the lower end of a front lower cross beam and the lower end of a rear lower cross beam to be fixed with the front lower cross beam and the rear lower cross beam; S4, a U-shaped clamp is machined through a round steel bar; S5, the stranded steel wirespenetrate through a flat anchor center hole channel, and the U-shaped clamp is hung on a front upper cross beam and the four hanging points of a main truss stand column through hand pulling blocks; S6, suspension rods of a suspension formwork system are completely dismantled; and S7, lifting hooks of the four hand pulling blocks synchronously downwards lower the formwork till the hand pulling blocks are loosened to the maximum stroke, anchorage device clamping sheets at the bridge surface are locked to enable the stranded steel wires to be stressed, the hand pulling blocks are lifted again andthen synchronously downwards lower the formwork, and the steps are repeated till the formwork is lowered to the right position. According to the integral formwork low hanging method for bridge hanging basket construction, the formwork dismantling purpose can be achieved, using of a large machine is avoided, the cost is reduced, the practicability is high, and the method is worth popularizing.

Description

technical field [0001] The invention relates to the field of cantilever hanging basket construction, in particular to a method for integrally lowering formwork for bridge hanging basket construction. Background technique [0002] After the construction and pouring of the cantilever hanging basket is completed for the last closing section or the second closing section, the bottom formwork needs to be dismantled. Sometimes due to site or space constraints, cranes and other machinery cannot be used for dismantling. The river or under the bridge is too high from the ground, and the crane arm cannot reach it, etc. Contents of the invention [0003] The object of the present invention is to provide a method for integrally hanging formwork for bridge hanging basket construction, so as to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] A method...

AI Technical Summary

Problems solved by technology

[0002] After the construction and pouring of the cantilever hanging basket is completed for the last closing section or the second closing section, the bottom formwork needs to be dismantled. Sometimes due to site or space constraints, cranes and other machinery cannot be used for dismantling. The height of the river or under the bridge is high from the ground, and the crane arm cannot reach it, etc.