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Medium-spanning steel-pipe concrete truss bridge

A technology of steel tube concrete and truss girders, which is applied to truss bridges, bridges, bridge parts, etc., can solve the problems of large number of pile foundations, high bridge construction cost, and large amount of steel bars, so as to reduce bridge construction costs, accelerate development, and increase construction speed Effect

Inactive Publication Date: 2007-11-21
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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  • Application Information

AI Technical Summary

Problems solved by technology

The original 40-meter, 50-meter simple T-beam or medium-span continuous rigid-frame bridge is used. Due to the heavy self-weight, the seismic horizontal load produces a large bending moment, resulting in a large number of pile foundations, long buried depth, thick pier section size, and a large amount of steel bars. Up to 500~700kg / m 2 ; Material transportation, component erection and installation are very difficult, resulting in high bridge construction costs, exposing the limitations and weaknesses of bridges using traditional materials

Method used

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  • Medium-spanning steel-pipe concrete truss bridge
  • Medium-spanning steel-pipe concrete truss bridge
  • Medium-spanning steel-pipe concrete truss bridge

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Referring to Fig. 1, the medium-span concrete-filled steel tube truss girder bridge of the present invention includes a main girder erected on the top of the pier, and the main girder is composed of a lower chord 11, an upper chord skeleton 12, and several web tubes 13 arranged at intervals and having vertical and horizontal inclinations. constitute. Referring to Figure 2, the upper and lower ends of each web tube 13 are fixedly connected to the lower chord 11 and the upper chord skeleton 12 respectively to form a truss beam whose cross section is triangular.

[0015] Referring to Figure 2, the main girder is usually designed with a frame structure, that is, left and right truss girders are arranged in its transverse direction, and the left and right truss girders are connected as a whole through connecting members. As a typical configuration, w...

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Abstract

The invention discloses a medium span steel tube concrete girder bridge which has the light weight and is simple to install, especially proper for the mountain expressway. It includes the main girder set at the top of the pier which is made up of the lower boom tube, top boom framework and many siphonets set in space and with obliquity. The two ends of every siphoned are connected with the lower boom tube and the top framework to form the girder bridge of triangular transect. The lower boom tube connected t the pier is the steel tube concrete. The invention can improve the bridge constructing speed and decrease the cost.

Description

technical field [0001] The invention relates to bridges, in particular to a medium-span steel pipe concrete truss bridge. Background technique [0002] Mountainous highways have complex terrain and geological conditions, high seismic intensity, and bridges with pier heights greater than 40 meters abound. The original 40-meter, 50-meter simple T-beam or medium-span continuous rigid-frame bridge is used. Due to the heavy self-weight, the seismic horizontal load produces a large bending moment, resulting in a large number of pile foundations, long buried depth, thick pier section size, and a large amount of steel bars. Up to 500~700kg / m 2 ; Material transportation, component erection and installation are very difficult, resulting in high bridge construction costs, exposing the limitations and weaknesses of bridges using traditional materials. Therefore, in the new environment, using high-strength materials, reducing self-weight, developing new structures, and simplifying cons...

Claims

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Application Information

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IPC IPC(8): E01D6/00E01D19/04E01D101/24E01D101/30
Inventor 庄卫林牟廷敏黄道全范碧琨田波谢光辉梁健钟川剑
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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