Formwork support for cast-in-place concrete plate

Abstract

The invention discloses a formwork support for a cast-in-place concrete plate and relates to formwork engineering of concrete plates. The construction workload of a support system is reduced by adopting a matching tool type bent frame system taking a hybrid structure convenient to assemble in site and locally disassemble as a main framework as the formwork support, hinging combined parts of the hybrid structure by utilizing pre-stress by virtue of a connection structure of a semi-hinge groove, a fixed hinge shaft and a movable sleeve, finely adjusting the lifting of a main structure by using a mechanism frame foundation and adopting the application of strong-stiffness and high-strength support of the hybrid structure to a strong-stiffness large edge. The formwork support is simple in structure, simple and convenient in construction and capable of improving the supporting effect, greatly shortening the operation hour and the time limit of a subentry project and reducing the usage amount of a member material. The formwork support supports local support and early removal of a formwork, and the turnover rates of the formwork and a supporting member are increased. The working reliability of the support system is high, and the fine adjustment for the lifting of the main structure, realized by using the frame foundation, is simple in operation and precise in size, so that the construction quality and safety are ensured.

Description

technical field [0001] The invention relates to a construction engineering formwork support. Background technique [0002] At present, the formwork support of cast-in-place concrete slabs such as floor slabs, roof slabs of structures, and platform slabs in construction projects often adopts a full-scale steel pipe scaffolding system, which is constructed in the form of a single rod. The method of assembling and fastening the support is: Scaffolding steel pipes and matching fasteners are assembled into a full-scale scaffolding, and an adjustment space is left at the top of the scaffolding pole, and the height and flatness of the concrete slab formwork are adjusted by the screw jacking. [0003] This commonly used support system has the following problems: [0004] 1. The mechanical properties of the section of the vertical rod directly bearing the vertical load are weak, the layout density of the vertical rod is high, and it is necessary to use more vertical and horizontal r...

AI Technical Summary

Problems solved by technology

[0004] 1. The mechanical properties of the section of the vertical rod directly bearing the vertical load are weak, the layout density of the vertical rod is high, and it is necessary to use more vertical and horizontal rods and fasteners for diagonal braces than the number of vertical rods to form an overall stable and vertical rod A floor frame with a single pole that satisfies the stability conditions of the pressure pole has a large construction workload. Compared with its load-bearing function and installation cost, the efficiency is low. The higher the space under the concrete slab, the lower the efficiency

Moreover, because the distance between the vertical poles is small, it does not have the economic significance of popularizing and applying large rigidity and high efficiency templates.

[0005] 2. Construction is carried out in the form of single-pole loose assembly, which consumes a lot of man-hours for assembly and disassembly; one by one at the top of the vertical pole, the height and flatness of the large corrugation of the concrete slab formwork are adjusted, and the artificial efficiency is low.

[0006] 3. Extensive consumption and occupation of scaffold steel pipes and fasteners

The vertical support system that bears the self-weight load of the concrete slab cannot be disassembled during the strength maintenance period of the newly poured concrete formwork removal. Improve the turnover rate of supporting materials, so that the fine construction management with the goal of reducing consumption and improving efficiency is subject to technical restrictions

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