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Assembly type inner cavity special-shaped formwork structure and mounting and dismounting method

A prefabricated and formwork technology, which is applied in the direction of formwork/formwork/work frame, formwork processing, building structure, etc., can solve the problems of difficult installation and removal of inner cavity formwork, and achieve convenient removal, cost reduction, and speed up. The effect of construction speed

Pending Publication Date: 2021-04-09
王琪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the difficulty of installing and dismantling the existing inner cavity formwork, invent an assembled inner cavity special-shaped formwork structure and installation and removal method, and realize the rapid assembly, dismantling and repeated use of the inner cavity formwork

Method used

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  • Assembly type inner cavity special-shaped formwork structure and mounting and dismounting method
  • Assembly type inner cavity special-shaped formwork structure and mounting and dismounting method
  • Assembly type inner cavity special-shaped formwork structure and mounting and dismounting method

Examples

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Effect test

example 1

[0027] Example 1. A quick installation method for the inner cavity formwork of a long rectangular hollow concrete member

[0028] Figure 4 Shown is a formwork structure diagram when a long rectangular hollow concrete member is poured. To this end, the reinforcement cage of the component is bound first, then hoisted into the outer formwork, and the positioning stopper 5 of the inner cavity formwork is arranged around the reinforcement cage, and then the inner cavity is formed by assembling the rigid formwork 1 and the connecting gusset 2 formwork 3, and the outer side of the inner cavity formwork 3 is wrapped with an insulating material 4, and then penetrated from the inside of the steel cage. More than two positioning stoppers 5 are arranged on the outside of each side of the inner cavity formwork 3, and the positioning stoppers 5 are arranged at a certain interval along the length direction, and bound to the reinforcement cage.

example 2

[0029] Example 2. A quick removal method for the inner cavity formwork of a long rectangular hollow concrete member

[0030] A long rectangular hollow concrete member, when the concrete member is cured for a period of time, the formwork needs to be removed quickly. For this reason, the first step is to open the outer formwork, and remove the formwork at both ends of the concrete; the second step is to apply axial pressure to the small section end of the inner cavity formwork 3, so that the inner formwork 3 of the concrete member is separated from the concrete member; In the third step, the large-section end of the inner cavity formwork 3 is drawn to extract the inner formwork 3 from the concrete member.

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Abstract

The invention discloses an assembly type inner cavity special-shaped formwork structure and a mounting and dismounting method. The inner cavity formwork structure is composed of a rigid formwork, a connecting buckle plate, and external positioning blocking clamps. The sectional area of the rigid formwork is gradually changed along the length direction; every two adjacent formworks are assembled into a whole through the connecting buckle plate to form a special-shaped closed structure; all the formworks are connected through lap joint type inner bolts; the outer side of the formwork is wrapped with an isolation material; and the external positioning blocking clamps are distributed at the outer side of the formwork, are arranged along the periphery and are used for positioning an inner formwork. During installation, a small-section end is inserted into a reinforcement cage; and during formwork removal, axial pressure is applied from the small-section end, so that the inner cavity formwork is separated from a concrete member, and then the inner cavity formwork is pulled out. The formwork is quick to mount and demount and can be repeatedly used. The assembly type inner cavity special-shaped formwork structure has green, environment-friendly, safe and reliable social benefits, meanwhile, the manufacturing cost can be reduced, the construction period can be shortened, and good economic value is achieved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an inner cavity formwork structure and a quick installation and removal method for pouring hollow reinforced concrete members. Background technique [0002] In construction engineering, hollow reinforced concrete structures have very significant physical and mechanical properties, such as hollow box girders used on long-span bridges, super-high abutments; hollow columns and piles, and large-diameter piles that resist bending and sliding And retaining walls, etc., but the installation and removal of hollow formwork has always been a difficult problem in the construction of concrete components. If it is poured into a solid structure, not only the weight will increase a lot, but also a lot of building materials will be wasted, and transportation and installation will be very difficult. If a disposable inner formwork is used, the construction cost will increase exponential...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G15/06E04G19/00
CPCE04G15/06E04G15/063E04G19/00
Inventor 刘斐然
Owner 王琪
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