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Steel-pipe concrete assembled pier

A technology for CFST and CFST columns, applied in bridges, bridge parts, bridge materials, etc., can solve the problems of poor economy and high technical requirements, and achieve the effects of reducing construction difficulty, speeding up the construction process, and reducing the cost of bridges

Inactive Publication Date: 2007-11-21
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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Problems solved by technology

When the pier height is greater than 60 meters, these three structural types of pier have the disadvantages of high technical requirements and poor economic efficiency. Usually, a continuous rigid frame pier with a span of 200 meters and a height of 157 meters costs at least 40 million yuan for construction and installation.

Method used

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Referring to Fig. 1 and Fig. 2, the two ends of the steel pipe concrete composite pier of the present invention, the longitudinal support system 20 are respectively fixedly connected with the main girder 10 and cap 11 of the bridge. The longitudinal support system 20 includes at least one support unit. The support unit is composed of at least four concrete-filled steel tube columns arranged at intervals along the longitudinal and transverse directions of the bridge. Two adjacent concrete-filled steel tube columns are connected as a whole by support members. In order to improve the overall strength and rigidity of the support unit, on the longitudinal support system 20, a reinforced concrete web 50 is fixedly connected between two adjacent concrete-filled steel tube columns. In order to improve the stability of the bridge pier, the steel pipe conc...

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Abstract

The invention discloses a compound steel tube concrete pier especially used in the mountain bridge pier. Two ends of the longitudinal supporting system are connected with the bridge girder and the bearing stage, which includes at least one supporting unit including at least four steel tube concrete columns set in crossly or horizontally to form the grid composing column with the supporting components. The invention uses the concrete grid column as the bridge, so it can simplify the pier structure and decrease the cost, the constructing difficulty and accelerate the construction progress.

Description

technical field [0001] The invention relates to bridges, in particular to a steel pipe concrete composite bridge pier. Background technique [0002] With the development of society and economy, expressways have been extended to mountainous areas. The height of piers on mountainous highways is very different from that of general girder bridges, and the height of high piers is very high. How to build high piers in mountainous areas safely and economically, especially those with complex geology and high seismic intensity, is a key issue. designer concerns. [0003] At present, the commonly used super-high piers mainly have the following structural forms: hollow piers, hollow double-thin-walled piers, and combined piers of hollow and double-thin-walled piers. When the pier height is greater than 60 meters, these three structural types of piers have the disadvantages of high technical requirements and poor economic efficiency. Usually, a continuous rigid frame pier with a span ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02E01D101/24E01D101/30
Inventor 庄卫林牟廷敏蒋劲松范碧琨黄道全田波梁健钟川剑
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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