Formwork system of shear walls at two sides of extensible seam

Abstract

The invention discloses a formwork system of shear walls at two sides of an extensible seam. The formwork system of the shear walls at the two sides of the extensible seam comprises two sets of wall body pouring formworks arranged symmetrically with the extensible seam as a symmetric axis, side face fastening steel tubes and end portion fastening steel tubes, wherein, the side face fastening steel tubes and the end portion fastening steel tubes are used for fixing the wall body pouring formworks. Each set of the wall body pouring formwork is respectively enclosed by an outer side formwork, an inner side formwork and an end portion formwork. A support block is respectively arranged between the outer side formwork and the inner side formwork in each set of the wall body pouring formwork and each outer side formwork and each inner side formwork are fastened through each transverse fastening steel tube, each side face fastening steel tube and a split bolt. Each end portion formwork is pressed on each outer side formwork and each inner side formwork through the end portion fastening steel tubes, bolt rods and match of end portion movable nuts on the bolt rods. According to the formwork system of the shear walls at the two sides of the extensible seam, the formworks at the two sides of the extensible seam can be erected by once in a narrow space, construction period is greatly shortened, engineering cost is reduced, and the formwork system is not limited by the size of the extensible seam and particularly applicable to the condition that the extensible seam is small.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a formwork system for shear walls on both sides of expansion joints. Background technique [0002] Building expansion joints, also known as expansion joints, refer to a structure vertically arranged at an appropriate part along the length of the house in order to prevent cracks or damage to the building structure due to climate temperature changes (heat expansion, cold contraction). seam. [0003] There is a shear wall on both sides of the expansion joint. During on-site construction, due to the small internal space of the expansion joint, the wall formwork is not easy to reinforce. At present, it is generally used to complete the concrete pouring on one side of the expansion joint first and then proceed to the other side. The construction of the structure mainly includes the following types: [0004] Option 1: Complete the construction of the concrete sh...

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Problems solved by technology

[0006] It can be seen from the construction schemes of the shear walls on both sides of the expansion joints provided in Scheme 1 and Scheme 2 that the shear walls on both sides of the expansion joints are poured first after the shear walls on the side of the expansion joints are poured. Then pour the shear wall on the other side of the expansion joint by means of single-sided formwork. The reinforcement of the single-side formwork system is relatively difficult, and this method also requires a long pouring time, and the construction period is relatively tight. The construction period cannot be guaranteed under certain circumstances. The expansion joints in Scheme 1 include disposable filling materials. The benzene board is a flammable material and cannot meet the fire protection requirements, while the old wood plywood plus wooden keel is a rigid filling material, which is used as The filling material of the expansion joint will affect the structural function of the deformation joint

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