Overall reinforcement binding and hoisting construction method and construction device adopting upstroke movable scaffolding

Abstract

The invention relates to an overall reinforcement binding and hoisting construction method and construction device adopting upstroke movable scaffolding. Concrete is poured in the position of a reinforcement cage in an external formwork to form a box girder; the poured box girder is subjected to construction procedures including equal-strength curing, tensioning, grouting and anchor sealing; meanwhile, a mold is arranged on the box girder poured in a former hole, and the reinforcement cage is bound on the mold in the longitudinal direction. Then the upstroke movable scaffolding passes a hole and moves the a next span, after adjustment in position, the reinforcement cage is conveyed to the upstroke movable scaffolding from inside of the mold and is hoisted to the external formwork through a hoisting device to realize synchronous operation, and the construction period for each hole can be shortened by about 5 days. Compared with the traditional construction process, the requirements for large span, large tonnage and high clearance are met, and the construction method and the construction device are also applicable to conditions that gantry crane traveling tracks cannot be arranged below a bridge surface for offshore construction and the like.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method and a construction device for integrally binding and hoisting steel bars of an upward mobile formwork frame. Background technique [0002] The mobile formwork bridge building machine is a construction machine with its own formwork, which uses the cap or pier column as a support to pour the bridge on site. The construction process of the mobile formwork is a flow operation, and the steps are as follows: 1. Move the formwork through the hole and adjust it in place; 2. Bind the bottom, web steel bars, and arrange prestressed steel beams; 3. Assemble the inner mold; 4. Bind the top plate 5. Pouring box girder concrete; 6. Equal strength maintenance; 7. Tensioning, grouting, and anchor sealing. The construction period of each beam is about 18 days. The mobile formwork construction process must be completed before the next process can be carried out....

AI Technical Summary

Problems solved by technology

This kind of scheme is difficult to implement in most cases, the main reasons are as follows: 1. The gantry crane has high requirements and must meet the requirements of large span, large tonnage, and high clearance; 2. When the height of the pier column is too high, the gantry crane cannot meet the construction requirements; 3. For offshore construction and other bridge decks where the gantry crane walking track cannot be installed, the construction requirements cannot be met

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