Construction method for upper and lower layer vertical connection of fabricated steel-concrete combined pipes

Abstract

A construction method for upper and lower layer vertical connection of fabricated steel-concrete combined pipes comprises the following steps that (1) temporary positioning devices are installed; (2)a tower crane is used to hoist upper-layer steel-concrete combined pipes to lower-layer steel-concrete combined pipes which have been fixed firmly and makes the upper-layer steel-concrete combined pipes and the lower-layer steel-concrete combined pipes basically correspond up and down; (3) the temporary positioning devices are operated to integrally and fixedly connect the upper-layer steel-concrete combined pipes and the lower-layer steel-concrete combined pipes; (4) the temporary positioning devices are finely adjusted through spanners; (5) the lower ends of the upper-layer steel-concrete combined pipes and the upper ends of the lower-layer steel-concrete combined pipes are welded at butt-joint rectangular annular slits; and (6) the temporary positioning devices are removed. According tothe construction method, operation is convenient, a large amount of time is saved for the tower crane to do other hoisting operations, and the construction progress is accelerated; the upper-layer steel-concrete combined pipes are positioned in a press-positioning way, which is convenient and rapid; and fine adjustment can be made so as to ensure perpendicularity and construction quality.

Description

technical field [0001] The invention belongs to the technical field of prefabricated building construction, and in particular relates to a construction method for vertically connecting the upper and lower layers of a prefabricated steel-concrete composite pipe. Background technique [0002] Prefabricated steel components or steel-concrete assemblies designed in factories or construction sites according to drawings and assembled on site are called prefabricated buildings. For prefabricated buildings with fewer floors (low floors), during construction, large-tonnage cranes are generally used to hoist the steel components or steel-concrete assemblies on the upper floor and install the steel components or steel-concrete assemblies on the lower floors. The whole process of docking requires the crane to hang the upper steel components or steel-concrete assemblies all the time. In case of strong wind, the stability will still be affected, and the steel components are always hung by...

AI Technical Summary

Problems solved by technology

For prefabricated buildings with fewer floors (low floors), during construction, large-tonnage cranes are generally used to hoist the steel components or steel-concrete assemblies on the upper floor and install the steel components or steel-concrete assemblies on the lower floors. The whole process of docking requires the crane to hang the upper steel components or steel-concrete assemblies all the time. In case of strong wind, the stability will still be affected, and the steel components are always hung by the crane. In multi-point construction, a large number of cranes are required, and the construction cost Higher, the crane occupies a larger construction site, which also affects other operations on the construction site

For the construction of high-rise prefabricated buildings, the tower crane is used for hoisting. The tower crane hoists the steel components or steel-concrete assemblies on the upper floor and installs them on the steel components or steel-concrete assemblies that have been constructed on the lower floor. After the lower floor is connected reliably, another steel member or steel-concrete assembly is hoisted, which takes up a lot of working time of the tower crane and affects the efficiency of the tower crane and the progress of the project.

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