Construction method of building superstructure in high-rise steel-concrete mixed structure with few supporting formworks

Abstract

The invention discloses a construction method of a building superstructure in a high-rise steel-concrete mixed structure with few supporting formworks. The construction method is characterized by comprising the following steps of: lifting an H-shaped steel beam; then selecting appropriate wooden wedges according to the bottom elevation of a floor and the height of the H-shaped steel beam, and paving a key keel on the wedge; placing sub-keels on the surface of the key keel along a direction perpendicular to the key keel; paving bamboo glued plates on the sub-keels along plate joints in the arrangement direction of the sub-keels, and fixing by using the wooden wedges, wherein the elevation of the bamboo glued plates keeps consistent to the upper elevation of the H-shaped steel beam; before concrete is poured, arranging a middle supporting part by adopting a steel pipe and a screw, and measuring the elevation of the bamboo glued plates by using a gradienter in the supporting process; and after the elevation meets the requirements, arranging a middle supporting part used for reinforcing and fixing the key keel and the bamboo glued plates on the middle position of the bottom of the key keel, and then pouring the concrete. Compared with a full-scaffold formwork supporting system, the invention has the advantages of reducing the usage quantity of steel pipe scaffolds, accelerating the construction speed, reducing the consumption of revolving materials, saving the energy and meeting the requirements on the society for low-carbon economy, ensuring the construction quality of the concrete and obtaining good economic benefits and social benefits.

Description

technical field [0001] The invention relates to the construction field of a steel structure building system, in particular to a construction method of a formwork with few supports on the floor of a high-rise steel-concrete mixed structure building. Background technique [0002] In recent years, the residential projects of high-rise steel-concrete mixed structure residential system (columns are steel pipe concrete columns, beams are H-shaped steel beams, and floors are cast-in-place reinforced concrete floors) are increasing. The architectural features of this structural system are: (1) the room bay is not large, mostly between 3 and 4.5 meters; (2) the depth is also small, generally between 3.6 and 5.7 meters; (3) the storey height is not high , generally between 2.8 and 3.3m; (4) There are no concrete beams on the floor, and all the load-transmitting components are H-shaped steel beams. [0003] my country's cast-in-place concrete floor support generally adopts the method ...

AI Technical Summary

Problems solved by technology

This construction method has a wide range of applications, but it needs to build a full house of scaffolding, and multiple layers cannot be constructed at the same time. The construction progress is slow, it takes up turnover materials, and the construction cost is high.

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