Reinforcement method for arc-shaped formwork

Abstract

The invention discloses a reinforcement method for an arc-shaped formwork. The reinforcement method for the arc-shaped formwork includes the following steps that firstly, the lower portion of the beam formwork is reinforced through formwork bars in an edge pressing mode; secondly, the middle portion of the beam formwork is reinforced preliminarily through tension screws, rebar fixing butterfly-shaped clamps and rebar outer keels; thirdly, the upper portion of the formwork is reinforced in the mode that iron wires are tied to beam rebars and fixedly tied to iron nails on the formwork; and finally, reinforcement of the arc-shaped formwork is completed by fixedly tightening nuts on the tension screws on the middle portion. The number of inner keel ordinary battens is reduced, and the structure design requirement can be met after reinforcement through the flexibility and anti-bending performance of the rebars, so that the rebar outer keels are better fixed. The specially made rebar fixing butterfly-shaped clamps are used to prevent movement during and after reinforcement. The concrete forming effect is good after the fixing and installing technology is used.

Description

technical field [0001] The invention belongs to the field of building construction, and in particular relates to a method for reinforcing arc formwork used in building engineering construction. Background technique [0002] With the architectural aesthetic design and visual impact in construction engineering, more and more special-shaped buildings increase, so the construction unit is required to improve its capabilities. Because of the fluidity and plasticity of concrete, the construction and reinforcement of concrete structure formwork is more difficult. At present, the conventional formwork reinforcement method is a steel pipe plus tensioned screw reinforcement system, but its practicability in special-shaped building structures is greatly limited. [0003] Application publication number CN 104775617A discloses a cast-in-place concrete formwork reinforcement method, which discloses that when the concrete component is poured for the first time, at least one connector is pr...

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Problems solved by technology

[0004] In order to solve the problem of strengthening the arc-shaped beam formwork and improve the quality of concrete pouring, the invention provides a method for strengthening the arc-shaped formwork. The outer keel of the beam formwork is reinforced by using the bendability and bending resistance of the steel bar, and the HRB400 steel bar is used instead of the steel pipe to solve the problem of arc-shaped formwork. Shaped beam steel pipes are difficult to bend and expensive to bend, and steel pipes cannot be used for other purposes after bending. At the same time, the bending resistance of steel bars is used to play the supporting role required for reinforcement, which has a wide range of practical promotion value

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