Large-span arch bridge empty case cast-in-situ arch ring template system and construction method thereof

A technology of long-span arch bridge and formwork system, applied in the direction of arch bridges, bridges, bridge forms, etc., can solve the problems of troublesome installation and removal of cover formwork, many concrete construction joints, and difficulties in on-site construction, so as to achieve the reduction of concrete construction joints, simple construction, Material saving effect

Pending Publication Date: 2018-02-16
CHINA CONSTR FIRST GROUP THE FIFTH CONSTR +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of cast-in-situ arch ring formwork system and its construction method for large-span arch bridge hollow box room, to solve the problem of many concrete construction joints caused by the layered

Method used

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  • Large-span arch bridge empty case cast-in-situ arch ring template system and construction method thereof
  • Large-span arch bridge empty case cast-in-situ arch ring template system and construction method thereof
  • Large-span arch bridge empty case cast-in-situ arch ring template system and construction method thereof

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Embodiment Construction

[0040] Examples see Figure 1-3 As shown, a large-span arch bridge hollow box room cast-in-situ arch ring formwork system includes a formwork structure, a support frame body 1 and an arch ring constructed between the formwork structures. The formwork structure includes a bottom formwork 2 and a bottom formwork keel 3 And cover formwork and cover formwork keel, the bottom of described support frame body 1 stands on the ground, the top is supported on the bottom formwork keel 3, and described arch ring comprises arch ring concrete 4, arch ring upper layer steel bar 5 and arch ring lower layer steel bar 6.

[0041] The cover formwork includes fixed pre-set formwork units 7 and movable rear formwork units 8 alternately arranged at intervals from the bottom to the top, and the cover formwork keel includes a pre-set keel fixed on the upper side of the fixed pre-set formwork unit 7 Unit 9 and the rear keel unit 10 fixed on the upper side of the movable rear formwork unit 8 .

[004...

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Abstract

A large-span arch bridge hollow box room cast-in-situ arch ring formwork system and its construction method, the formwork system includes a formwork structure, a supporting frame body and an arch ring, a formwork structure bottom formwork and bottom formwork keel, and a cover formwork and cover formwork keel, cover The formwork includes a fixed pre-positioned formwork unit and a movable post-positioned formwork unit, and the cover formwork keel includes a pre-positioned keel unit and a rear-positioned keel unit. The side walls of the leading edge and the trailing edge are oblique surfaces that are adapted to and closely attached to. The construction method includes the steps of factory processing of cover formwork, construction of bottom formwork, construction of cover formwork, and pouring of concrete. The invention has simple construction and convenient operation, and good appearance quality of structural concrete, and can be applied to concrete pouring of the bottom plate and roof plate of cast-in-place box-shaped arch ring structures, and is also suitable for formwork systems of other cast-in-place large-scale reinforced concrete structures with steep slopes.

Description

technical field [0001] The invention relates to a formwork system, in particular to a formwork system and a construction method for a large-scale steep-slope reinforced concrete structure. Background technique [0002] In the prior art, in the cast-in-situ arch ring formwork system of the hollow box chamber of the large-span arch bridge, the cover formwork is generally constructed with ordinary wooden formwork. Generally, there are the following problems: Concrete needs to be conveniently poured and vibrated during the pouring process, so the cover form can only be supported in layers, and the concrete also needs to be constructed in multiple times. It is impossible to pour a large amount of concrete at one time, resulting in formed concrete. There are many construction joints. At the same time, the cover mold of the common formwork system cannot be recycled, the installation and removal of the cover mold is troublesome, the damage of the formwork is large, and the material...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D4/00
CPCE01D4/00E01D21/00
Inventor 沈益国刘金龚潇鉴吴学军王良彬张磊徐玉红刘爱琴高太师
Owner CHINA CONSTR FIRST GROUP THE FIFTH CONSTR
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