BIM-based prefabrication method and prefabricated formwork of reinforced concrete broken line roof truss

Abstract

The invention discloses a BIM-based prefabrication method and a prefabricated formwork of a reinforced concrete broken line roof truss. The prefabricated formwork comprises inner formworks supported in inner holes of the reinforced concrete broken line roof truss and an outer formwork enclosed outside the reinforced concrete broken line roof truss, wherein each inner formwork comprises two or moresections of inner steel formworks, acute angle shapers and obtuse angle shapers, and the adjacent inner steel formworks are fixedly connected through the acute angle shapers or the obtuse angle shapers; and the outer formwork comprises two or more sections of linear steel formworks and folded steel formworks which are arranged at the top and the bottom of the reinforced concrete broken line rooftruss. According to the prefabrication method and the prefabricated formwork, BIM software is adopted to carry out simulation modeling, a steel structure formwork is used to replace a traditional woodformwork, the steel formwork is subjected to subsection processing according to the manually movable weight, a detachable connection structure is adopted for a butt-joint point, which is easy to remove the formwork. In addition, a certain number of steel formworks can be made for turnover use according to the actual site, and the construction cost is saved.

Description

technical field [0001] The invention relates to a BIM-based reinforced concrete broken-line roof truss prefabrication method and a prefabricated formwork, belonging to the technical field of reinforced concrete roof trusses. Background technique [0002] Reinforced concrete broken line roof truss is the main roof load-bearing structural component of industrial factory buildings. According to the atlas of 04G314 "Reinforced Concrete broken line roof truss", reinforced concrete broken line roof trusses are divided into various spans, but the structure types are roughly the same. Since the prefabricated components (reinforced concrete broken-line roof trusses) have a long single-span length and are not convenient for transportation, the processing of the components basically adopts on-site prefabrication. [0003] At present, prefabricated components are generally made of concrete roof trusses by using brick-laying membranes, and the steel bars and pre-embedded steel bars are b...

AI Technical Summary

Problems solved by technology

[0004] 1) Poor forming quality: Since the side formwork mainly uses wooden formwork, the wooden formwork is difficult to handle at the node position and the docking position, and the vibration during the concrete pouring process is easy to expand the formwork and crack. low quality;

[0005] 2) Low production efficiency: the bottom mold and side molds have a long installation period, and it is difficult to bind the steel bars at the web position, resulting in a decrease in production efficiency;

[0006] 3) High consumption cost: In the production process, there are many working teams divided into shifts, and the labor consumption is large, and the wooden mold has a certain life cycle, the recycling rate is low, and the material consumption is large

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