A curved shear wall formwork support to strengthen the main flute and its construction method

Abstract

The invention discloses an arc-shaped shear wall formwork support and reinforcement main ridge and a method for constructing the same. The arc-shaped shear wall formwork support and reinforcement main ridge comprises a shear wall, a formwork, secondary ridges and opposite-pull screws. The formwork is arranged on the outer side of the shear wall, the secondary ridges are used for supporting and reinforcing the formwork, the opposite-pull screws sequentially penetrate the secondary ridges, the formwork and the shear wall and are fixed to two sides of the shear wall in an opposite-pull manner, inner-side horizontal reinforcing steel bars which are parallel to one another in the up-down directions are arranged on the outer sides of the secondary ridges and are positioned on the upper sides and the lower sides of the opposite-pull screws, and the opposite-pull screws are provided with E-shaped clamps for fixedly tensioning the inner-side horizontal reinforcing steel bars on the outer sides of the secondary ridges. The arc-shaped shear wall formwork support and reinforcement main ridge is characterized by further comprising a reinforcing steel bar truss main ridge; the reinforcing steel bar truss main ridge is fixed to the inner-side horizontal reinforcing steel bars and comprises a truss horizontal reinforcing steel bar, the truss horizontal reinforcing steel bar is separated from the secondary ridges by distances, the distances from the truss horizontal reinforcing steel bar to the inner-side horizontal reinforcing steel bars on the upper side and the lower side of the truss horizontal reinforcing steel bar are equal to one another, and truss diagonal bracing reinforcing steel bars are obliquely arranged between the truss horizontal reinforcing steel bar and the inner-side horizontal reinforcing steel bars on the upper side and the lower side of the truss horizontal reinforcing steel bar. The arc-shaped shear wall formwork support and reinforcement main ridge and the method have the advantages that the arc-shaped shear wall formwork support and reinforcement main ridge is simple in structural design, processes for constructing the arc-shaped shear wall formwork support and reinforcement main ridge can be easily and quickly implemented, and section deformation of the shear wall in construction procedures can be effectively diminished.

Description

technical field [0001] The invention relates to the technical field of formwork support and reinforcement in building construction, in particular to a formwork-reinforced main flute for an arc-shaped shear wall with an outward slope and variable curvature radius and a construction method thereof. Background technique [0002] The development of modern large-scale public buildings pays more and more attention to the beautiful and novel appearance of buildings. The most prominent performance is that cultural centers, gymnasiums, theaters, etc. all adopt complex and irregularly inclined arc-shaped concrete structures. In the construction process of cast-in-place reinforced concrete shear walls with outwardly inclined arcs, there are problems such as radian control, inclination angle control, and the shape of arc-shaped inclined walls is difficult to accurately locate and measure. Higher requirements are put forward for the back corrugation of the formwork support and reinforce...

AI Technical Summary

Problems solved by technology

In the construction process of cast-in-place reinforced concrete shear walls with outwardly inclined arcs, there are problems such as arc control, inclination angle control, and the shape of arc-shaped inclined walls is difficult to accurately locate and measure.

Higher requirements are put forward for the back corrugation of the formwork support and reinforcement system: 1. The centroid of the inclined arc shear wall is seriously eccentric, and the formwork support and reinforcement system needs to bear the lateral pressure and unbalanced force during the pouring process. As the shear wall section increases , in order to meet the requirements of the flexural strength of the main flute, it is necessary to adopt a large section steel with a large self-weight or a new structural form; the main flute is curved in three directions, the processing volume is large, the processing cost is high, and the arc line of the concrete member cannot be satisfied. Smooth and smooth precision requirements; steel bars are used as the main flute, and there is no fixed point between the ends of the steel bars and the structure, so the tensile strength of the steel bars cannot be exerted like a closed ring

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