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A steel-concrete arch ring chord structure of a steel truss arch
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A structural, steel-concrete technology, used in arch bridges, buildings, bridges, etc., can solve the problems of insufficient use of steel, chords not bearing force, poor economy, etc., to reduce the difficulty of transportation, clear force, and reduce steel. The effect of weight
Active Publication Date: 2020-12-08
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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Abstract
Description
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the steel-concrete composite structure existing in the existing steel truss arch, which uses the arch ring chords as a rigid skeleton and then wraps concrete around the chords. Due to the force, the steel cannot be fully utilized, and the formwork is required to pour the outsourcing concrete, which is less economical. The above-mentioned shortcomings provide a steel-concrete arch ring chord structure, a steel truss arch and a bridge
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Embodiment 1
[0043] Such as Figure 1-8 As shown, the steel-concrete arch ring chord structure of a steel truss arch according to the present invention includes pure steel structure 01, combined structure 02 and steel-concrete structure 03.
[0044] The combination structure 02 includes a pure steel section 1, the pure steel section 1 is connected to a transition section 2, and the transition section 2 is connected to a steel-concrete section 3, and the transition section 2 is a hollow steel box structure with an interlayer 4, the The interlayer 4 is filled with a concrete structure, a bearing plate 5 is provided between the pure steel section 1 and the transition section 2, and a separation plate 6 is provided between the transition section 2 and the steel-concrete section 3. The pure steel section 1 is connected to the pure steel structure 01, and the steel-concrete section 3 is connected to the steel-concrete structure 03.
[0045] Wherein, the steel-concrete section 3 is a solid steel...
Embodiment 2
[0049] Such as Figure 9 As shown, a steel truss arch according to the present invention includes four chord structures as described in Embodiment 1.
[0050] Each chord structure includes steel-concrete structure 03, combined structure 02, pure steel structure 01, combined structure 02 and steel-concrete structure 03, which are sequentially connected. The chord structures described above form a rectangular structure, and several connecting rods 9 are arranged between two adjacent chord structures.
[0051] As a preferred solution of this embodiment, the corresponding ends of each of the transition sections 2 on each of the chord structures are located in the same vertical plane. With this structural arrangement, the steel truss arch can The stress of each of the chord structures described above is basically uniform, which increases the bearing capacity of the overall structure, and the effect is good.
[0052] Using the steel truss arch of the present invention, the chord s...
Embodiment 3
[0054] Such as Figure 9 As shown, a bridge according to the present invention uses the steel truss arch as described in Embodiment 2.
[0055] As a preferred solution of this embodiment, the bridge is an overhead arch bridge, and the steel truss arch is connected to the beams through pillars.
[0056] Using the bridge of the present invention, the chord structure effectively, economically and conveniently solves the connection problem between the pure steel structure 01 and the concrete structure of the steel truss arch ring. The internal force of the pure steel structure 01 is evenly transmitted to the steel-concrete structure 03, and finally to the foundation of the abutment, so that the steel and concrete are jointly stressed, and the force is clear, which can improve the horizontal and vertical stiffness of the long-span steel truss arch , reduce the weight of steel, reduce the difficulty of transportation and installation of steel rods, and have better economy.
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Abstract
The invention discloses a steel-concrete arch ring chord member structure for a steel truss arch. The steel-concrete arch ring chord member structure for the steel truss arch comprises a pure steel structure, a combined structure and a steel-concrete structure; the combined structure comprises a pure steel section; the pure steel section is connected with a transitional section; the transitional section is connected with a steel-concrete section; the transitional section is a hollow steel box structure with a sandwich layer; a concrete structure is full of the sandwich layer; a pressure bearing plate is arranged between the pure steel section and the transitional section; an isolation plate is arranged between the transitional section and the steel-concrete section; the pure steel sectionis connected with the pure steel structure; and the steel-concrete section is connected with the steel-concrete structure. The steel-concrete arch ring chord member structure for the steel truss archhas the advantages that the connection problem between the pure steel section and the concrete section of an arch ring of the steel truss arch is effectively, economically and conveniently solved; andby using the steel-concrete transitional section connecting structure, the internal force of the pure steel section can be uniformly transmitted to the steel-concrete section and finally transmittedto an arch support foundation so that the steel and the concrete mutually bear forces; therefore, the stress is clear, the transverse and vertical rigidity of a large-span steel truss arch can be enhanced, the weight of the steel can be reduced, the transporting difficulty and mounting difficulty of a steel rod can be reduced and the economic efficiency is better.
Description
technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a steel-concrete arch ring chord structure of a steel truss arch, a steel truss arch and a bridge. Background technique [0002] The steel-concrete composite structure (referred to as the steel-concrete structure) is a new type of structure composed of two materials with different properties, steel and concrete. It is a reasonable combination of steel and concrete, giving full play to the high tensile strength of steel. , good plasticity and good compressive performance of concrete to make up for their respective shortcomings; in modern bridge structures, steel-concrete composite structures have increasingly become one of the main directions of bridge development. At present, steel-concrete composite structures are widely used in bridges It is often used on the main girder or bridge tower of cable-stayed bridge suspension bridge. On the steel truss arch of steel arch b...
Claims
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Application Information
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