Method for setting up box-type bridge body maintain engineering box outer hanging falsework

Abstract

The invention relates to a construction method of external scaffold in box-type bridge maintenance engineering, particularly a construction method of externally-suspended scaffold in maintenance engineering of box-type bridge girder. The invention is characterized in that the method comprises the following steps: 1) building a full hall scaffold, as a hoisting rooting platform, on a pier repair platform of the original bridge or in a smaller space near the pier, and building a first row of in-box horizontal steel tubes (8), vertical leaf steel cables (9), vertical right steel cables (10), low boom columns (13), left vertical steel tubes (12) and right vertical steel tubes (14) on the hoisting rooting platform; 2) cantilevering second and third rows by the same method as the first tow until the maintenance section is covered completely; 3) building trusses; 7) paving gang boards on a truss top chord (15), a left web maintenance platform (22) and a right web maintenance platform (23) respectively, and suspending a safety net. The invention has the advantages of no limitation of space under bridge and short construction cycle.

Description

technical field [0001] The invention relates to a method for setting up scaffolding outside the box of a box-type bridge maintenance project. Background technique [0002] Scaffolding is an indispensable temporary facility in building construction. It is erected with the progress of the project and dismantled when the project is completed. Although scaffolding is a temporary facility, it is inseparable from scaffolding in the foundation of the project, main construction and decoration, equipment installation and other operations. Scaffolding is often used in construction to solve the problems of personnel operating platforms, temporary material storage and short-distance transportation channels. Therefore, whether the scaffolding design and construction is reasonable or not not only directly affects the construction progress and construction cost of the construction project, but also directly affects the working conditions and life safety of the operators. [0003] A certa...

AI Technical Summary

Problems solved by technology

The advantages of conventional scaffolding construction are: the structural force is clear, safe and reliable; the disadvantages are: large site constraints, large self-weight, large amount of materials, high cost, long construction period, etc.

[0004] Due to factors such as the space under the bridge and structures (rivers, railways) involved in bridge reinforcement and maintenance, the construction site does not have the conditions for erecting full-scale scaffolding and sliding scaffolding, and the existing scaffolding construction methods are difficult to implement

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