Batter brace bridge

Abstract

The invention discloses a batter brace bridge comprising steel truss composed of upper chord, lower chord and web member; the lower chord is installed at two sides of lower layer bridge deck; breadth of the lower chord adapts to breadth of lower layer bridge deck; the upper chord is installed at two sides of upper layer bridge deck; breadth between the upper chords is larger than that of lower chord; the web member top is installed slant outward. The batter brace bridge of the invention has character of broad upper layer of road deck and narrow lower layer of railway deck, which can reduce cantilever length of bridge deck and enable transversal arrangement of road bridge deck more reasonable. The cantilever of the road bridge deck can not be installed with bracket, which results in smooth line, harmonic proportion, good economic effect and saving steel material. The invention solves problem of truss type and bridge construction scale when double decks of the bridge has excessively different breadth, largely improves mechanical performance of truss structure, optimizes detail of truss structure, thereby the bridge has merits of reasonable mechanical performance, simple structure, beautiful appearance and economy.

Description

technical field [0001] The present invention relates to a kind of bridge and this kind of bridge, specifically, it is a kind of oblique truss bridge. Background technique [0002] With the rapid development of our country's social economy, the flow of people and materials has become increasingly frequent, and infrastructure such as transportation has also developed rapidly. More and more modern bridges have emerged, which objectively require bridge construction technology to continue Innovation, development and promotion. [0003] Among various bridge structures, steel truss bridges have the advantages of light weight, high strength, high rigidity, and large spanning capacity, and are traditionally commonly used bridge types. With the rapid development of my country's railways, highways and transportation in recent years. In order to save bridge positions, protect the environment, and improve economic benefits, double-deck road-rail bridges, double-deck cities, and highway...

AI Technical Summary

Problems solved by technology

The road-rail dual-purpose bridge to be built under the new form has a wide difference in the width of the railway and highway decks. In this case, if the straight truss form is continued, the width of the railway bridge deck will remain unchanged, and the cantilever width of the highway bridge deck will be too large. Steel bracket 3 support is specially set at each node, the amount of steel is increased, and the vision is cluttered

If the width of the railway bridge deck is increased to reduce the width of the highway cantilever slab, the transverse span of the railway deck will be increased, the beam must be strengthened, and the amount of steel used will be increased

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