Three plates or multiple plates truss structure main girder

Abstract

A three / multiple truss main beam of bridge uses a transverse connector 3 to connect a edge main truss 2 and a middle main truss 2, wherein the edge main truss 1 and the middle main truss 2 are arranged with an upper bridge or horizontal connector 4, with a lower bridge or a transverse connector 5 under, the edge main truss 2 and the middle main truss 2 are formed by an upper chord member 6, a lower chord member 7 and a middle web member 8, the middle main truss 2 can be one or several sheets. And nearby two main trusses are connected by the transverse connector 3, to transmit the force between main trusses. The invention uses at least two trusses to bear together, to reduce the force on rod, reduce rod section, reduce the thickness demand and reduce the counter force of base 9. The invention can be used in continuous beam and arc bridge, or the like.

Description

technical field [0001] The invention relates to a truss structure main girder in a bridge. Background technique [0002] In recent decades, with the development of our country's social economy, roads and bridges are also developing rapidly, but bridge space resources are limited, so the number of lanes continues to increase. At the same time, due to the busy shipping, the span of bridges is also increasing. As a result, the scale of the bridge structure is becoming larger and larger. The force of the members of the bridge with two truss girders is often tens of thousands or even over 10,000 tons. It is difficult to meet the requirements in various fields such as installation and installation, so the force on the rod must be reduced. If two or more pieces of truss are used to bear the force together, the force of each member of the truss can be effectively reduced, so that a super-large-scale bridge can be realized under the existing industrial foundation and technological l...

AI Technical Summary

Problems solved by technology

[0002] In recent decades, with the development of our country's social economy, roads and bridges are also developing rapidly, but bridge space resources are limited, so the number of lanes continues to increase. At the same time, due to the busy shipping, the span of bridges is also increasing. As a result, the scale of the bridge structure is becoming larger and larger. The force of the members of the bridge with two truss girders is often tens of thousands or even over 10,000 tons. It is difficult to meet the requirements in various fields such as installation and installation, so the force on the rod must be reduced

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