Lifting lattice flat frame adjustable free end support formwork early-dismantling system and construction method thereof

Abstract

The invention relates to a lifting lattice flat frame adjustable free end support formwork early-dismantling system and a construction method thereof. The lifting lattice flat frame adjustable free end support formwork early-dismantling system is characterized in that the lifting lattice flat frame adjustable free end support formwork early-dismantling system comprises an adjustable free end independent support frame body and a lifting lattice flat frame, the lifting lattice flat frame is arranged at the top of the adjustable free end independent support frame body, the adjustable free end independent support frame bodycomprises vertical support pipes and horizontal support pipes, the vertical support pipes are connected with plugs of the horizontal support pipes, and the upper ends of thevertical support pipes are connected with adjustablefree end jacking assemblies which are provided with adjustable screw nuts, screws with supporting plates and adjustablewheel disc assemblies; the lifting lattice flat frame comprises a plurality of main arris, a plurality of secondary arris, a main arris connection mechanism and a main-secondary arris connection mechanism, the main arris are horizontally connected through the main arris connection mechanism, the secondaryarris are horizontally connected with the main arris through the main-secondary arris connection mechanism, and the main arris and the secondary arris are located on the same horizontal plane. The lifting lattice flat frame adjustable free end support formwork early-dismantling system and the construction method thereofhave the advantages that frame body stability and construction efficiency can be greatly improved, installation and dismantling are simple, convenient and fast, the turnover rate of formworks and frame body componentsishigh, and the construction material preparing cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of building formwork support systems in construction engineering, and in particular relates to an early demolition system and a construction method of an adjustable free-end support formwork of a liftable lattice flat frame. Background technique [0002] At present, the most commonly used steel pipe support system on construction sites is composed of steel pipes, fasteners, adjustable jacking brackets, and square wood (main flute and secondary flute), which are loosely assembled and disassembled, resulting in a large workload and low work efficiency. When supporting the frame body, it is necessary to fasten the fasteners one by one and use a torque wrench to randomly check the tightening degree of the bolts. The installation progress is slow; the distance between the horizontal support rod and the vertical rod is large, which may lead to weak parts of the frame body, which may cause safety hazards Large, and...

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Problems solved by technology

[0002] At present, the most commonly used steel pipe support system on construction sites is composed of steel pipes, fasteners, adjustable jacking brackets, and square wood (main flute and secondary flute), which are loosely assembled and disassembled, resulting in a large workload and low work efficiency.

When supporting the frame body, it is necessary to fasten the fasteners one by one and use a torque wrench to randomly check the tightening degree of the bolts. The installation progress is slow; the distance between the horizontal support rod and the vertical rod is large, which may lead to weak parts of the frame body, which may cause safety hazards Large, and highly dependent on the operator's technology, a large amount of labor

The above-mentioned steel pipe support system uses a large amount of square wood, and the quality of different batches of square wood is obviously different. The cross-sectional size and bending resistance cannot be unified. When it is in a humid environment or a water-rich environment, the deformation is serious, and it cannot meet the straightness requirements of the entire system.

Therefore, after use, the concrete surface will have poor flatness, which does not meet the requirements of building construction specifications.

In addition, due to the low turnover rate of square logs, and those that do not meet the straightness requirements are basically eliminated directly, which not only increases the construction cost, but also fails to meet the environmental protection concept of "material saving".

[0003] In order to avoid quality hazards caused by square timber deformation, double-row steel pipes are usually used instead, but the load on the frame will increase significantly, and the risk of safety accidents is high

When the traditional steel pipe support system is dismantled, it is necessary to wait for the strength of the test block of the same structural member to meet the design requirements before dismantling it all at once, that is, "one dismantling and all dismantling", which does not have the function of "early dismantling". The construction volume is large and the work efficiency is low. ; and formwork, steel pipe frames and other materials take a long period of time, the turnover of materials is slow, and the construction cost remains high

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