Method and structure for mounting precast reinforced concrete stairs

Abstract

The invention discloses a method and a structure for mounting precast reinforced concrete stairs. A steel beam is connected and mounted on a tower crane via lifting steel wire ropes, lift regulating steel wire ropes are arranged on the steel beam simultaneously, a precast reinforced concrete stair can be lifted to a stair mounting platform by the tower crane after the lift regulating steel wire ropes are connected to the precast reinforced concrete stair via bolts, an upper end platform and a lower end platform of the precast reinforced concrete stair are enabled to be displaced on the stair mounting platform, embedded steel bars are respectively inserted into corresponding steel bar positioning holes on the upper end platform and the lower end platform of the precast reinforced concrete stair at the same time, and fine aggregate concrete is filled into the steel bar positioning holes and seams between the stair mounting platform and the precast reinforced concrete stairs. The method and the structure for mounting precast reinforced concrete stairs have the advantages that construction is rapid, mounting is convenient, structure is simple, connection between the stairs and a floor is reliable, construction quality is effectively guaranteed, utilization is safe and reliable and the like.

Description

technical field [0001] The invention relates to an installation method and structure of a reinforced concrete prefabricated staircase, belonging to the technical field of concrete staircase production. Background technique [0002] With the continuous improvement of people's requirements for living environment and the continuous improvement of housing function requirements, the construction industry has developed rapidly. On the other hand, the construction industry itself has certain requirements for the safety, quality, progress and cost of buildings. The traditional construction method of cast-in-place concrete stairs is outdated, the construction process is cumbersome, the construction quality is limited by the technical level of the construction workers, and the construction error is difficult to control. The main problems are as follows: First, it is difficult to accurately control the stepping and stepping positions of the formwork support system, which requires high...

AI Technical Summary

Problems solved by technology

The traditional construction method of concrete cast-in-place stairs is outdated, the construction process is cumbersome, the construction quality is limited by the technical level of the construction workers, and the construction error is difficult to control

The main problems are as follows: First, it is difficult to accurately control the stepping and stepping positions of the formwork support system, which requires high technical level of construction workers, which often causes deviations in the stepping size after the concrete formwork is removed, which adds a lot to the later decoration work workload

Second, during the concrete pouring construction, since the concrete of the stairs is vibrated in a fully enclosed space, the time and location of the vibration are relatively hidden, the quality of the vibration is difficult to control, and the quality of the finished product is often unsatisfactory

Third, during the construction of concrete cast-in-place stairs, it is necessary to set up a formwork support system, steel bar binding, formwork closure, concrete pouring and other construction procedures. The construction process is cumbersome and the construction period is long

However, the existing reinforced concrete prefabricated stairs have problems such as inconvenient installation, difficult positioning during installation, and unreliable connection and fixation during installation.

Therefore existing reinforced concrete prefabricated stairs are still not ideal

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