Construction process for implementing post-cast strip casting by post-cast strip stiff steel pipe support system

Abstract

The invention relates to a construction process for implementing post-cast strip casting by a post-cast strip stiff steel pipe support system and relates to the construction technique of post-cast strip casting for buildings. Arranging two rows of holes on spread beam-bottom form boards, and a straight stiff steel pipe is allowed to penetrate through each hole. A hoop steel pipe is disposed between the two rows of straight stiff steel pipes below the two rows of holes. Floor concrete is cast on the beam-bottom form boards. After the cast floor concrete solidifies, the hoop steel pipe is removed and concrete casting and maintenance are performed to post-cast strips. The beam-bottom form boards and the straight rigid steel pipes are removed finally. Cost of secondary form erecting materials is low, cost in renting the material is lowered greatly, and the total cost is about two times of that of the existing construction method. The straight stiff steel pipes are reusable. The construction segments are mutually communicated, so that effective and fast turnover of the materials is guaranteed, engineering cost is reduced greatly and construction period is shortened greatly.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for post-casting tape pouring of buildings. Background technique [0002] At present, the distance between the post-cast belts of large commercial buildings is generally about 40 meters. The number is greatly reduced, while reducing the number of post-casting belts, the construction area of ​​each section is greatly increased. When construction units carry out commercial building construction, they often carry out horizontal water flow and vertical flow water segmental construction according to the division of post-pouring belts and the location of expansion joints, and the design generally requires that the pouring time of post-pouring belts be more than 90 days after concrete pouring on both sides or After the main structure is capped, due to the large area of ​​the construction section, the turnover of materials is undoubtedly the key issue...

AI Technical Summary

Problems solved by technology

[0004] However, due to the limited arrangement of tower cranes and construction elevators on site, and the construction unit often adopts post-casting belt formwork support system without dismantling or retaining vertical poles during early formwork removal, for the case of large number and long length of post-casting belts Under the circumstances, when materials are turned over, each construction section cannot use the unloading platform and the atrium opening to discharge and feed materials, which greatly affects the construction progress of formwork removal, plastering, secondary structure, decoration, etc.

Images