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Cast-in-place construction method for large-span diamond-shaped bent cap of high pier

A construction method and large-span technology, applied to bridges, bridge parts, bridge materials, etc., can solve problems such as high risk, high cost, and many hidden dangers, and achieve the effect of avoiding difficult construction

Inactive Publication Date: 2021-01-12
CHINA RAILWAY NO 3 GRP CO LTD +1
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a cast-in-place construction method for large-span diamond-shaped cover beams for high bridge piers in order to solve the problems of difficult formwork erection, long construction period, high cost, high risk, and many hidden dangers in the existing high bridge pier cover beam construction method

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  • Cast-in-place construction method for large-span diamond-shaped bent cap of high pier

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Embodiment Construction

[0019] In order to enable those skilled in the art to better understand the present invention, the present invention will be further clearly and completely described below in conjunction with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0020] Such as figure 1 Shown, a kind of cast-in-place construction method of large-span diamond shaped cover beam for high bridge pier comprises the following steps:

[0021] 1) Cantilever support structure construction: Reserve holes on the standard section of straight pier 1 that has been built. The reserved holes are made of steel pipes with a diameter of 16cm. Steel rods are inserted in the reserved holes, and erected on the steel rods. 45a double I-beam 2 with a length of 24m, and the two ends of the 45a double I-beam 2 are fixed by diagonal t...

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Abstract

According to the cast-in-place construction method for the large-span diamond-shaped bent cap of the high pier, cast-in-place construction of inclined legs and the bent cap is achieved through a two-part supporting system, in the first part, a combined supporting system is formed through 45a double-spliced I-shaped steel, a channel steel bracket and a slope bracket, and cast-in-place constructionof an inclined leg supporting bent cap structure is achieved; and in the second part, a fastener type steel pipe full framing is erected at the hollow structure on the tie beam which is poured and solidified, square timbers and formworks are laid, and cast-in-place construction of the cross beam is achieved. The construction method is a very simple, effective, safe, reliable, rapid and economicalconstruction scheme for viaducts and municipal bridges constructed under the complex conditions of high piers crossing rivers, valleys crossing, soft soil foundations crossing and the like. By the adoption of the construction technology, the defects that a traditional bracket is difficult to construct, long in construction period, high in cost, large in risk, multiple in potential safety hazard and the like are overcome.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a bridge construction method, in particular to a cast-in-situ construction method for a large-span diamond-shaped cap beam with a high pier. Background technique [0002] Most of the existing road and municipal bridge pier cover beams are cylindrical pier-connected square cover girder structures. There are three main construction methods: one is the steel rod method, that is, steel rods are installed on the cylindrical piers, and screw jacks and jacks are installed on the steel rods. I-beam beams are installed on the top to form a formwork support system; the second is the hoop method, that is, during the construction of a cylindrical pier, a back corrugated is added outside the formwork as a bearing point, and a jack or a wedge-shaped steel plate is installed on the back corrugated. Type steel beams form the formwork support system; the third is the sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/10E01D19/02E01D2/00E01D101/26
CPCE01D2/00E01D19/02E01D21/10E01D2101/26
Inventor 刘国利韩付亮刘宏睿常玉骞王超刘学忠王钢袁晓红
Owner CHINA RAILWAY NO 3 GRP CO LTD
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