A joint structure and arrangement method of hinged steel bar connectors for concrete girder bridges

A technology of concrete beam and layout method, which is applied in the direction of bridge parts, bridges, bridge construction, etc., can solve problems such as unfavorable stress on hinge joints, and achieve the effect of improving reinforcement ratio, improving integrity, and strengthening lateral connections.

Active Publication Date: 2017-12-05
HEBEI PROVINCIAL COMM PLANNING & DESIGN INST
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  • Abstract
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  • Claims
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Problems solved by technology

For the bottom contact surface that is unfavorable for hinge joints, there is not only tensile stress due to transverse bending moment under operating conditions, but also shear forces due to various loads. Repeated tension and shear are extremely unfavorable for hinge joints.

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  • A joint structure and arrangement method of hinged steel bar connectors for concrete girder bridges
  • A joint structure and arrangement method of hinged steel bar connectors for concrete girder bridges
  • A joint structure and arrangement method of hinged steel bar connectors for concrete girder bridges

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Embodiment Construction

[0038] Preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and are used together with the embodiments of the present invention to explain the principle of the present invention.

[0039] The invention provides a new structural form of hinged steel bar connectors, which are used for parallel connection between concrete beams, such as figure 1 In the parallel connection between the concrete beam 1 and the concrete beam 2 2, the steel connector is placed in the joint between two adjacent concrete beams, and then concrete is poured to fix it in the joint .

[0040] In the present invention, in order to make the description of the embodiments clear, the following coordinate system is first defined: the z-axis is along the length direction of the concrete beam hollow slab, the y-axis is along the height direction of the concrete beam h...

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Abstract

The invention relates to a hinged steel bar connector structure and an arrangement method for concrete girder bridges, comprising a triangular connector structure and a U-shaped connector structure; On the surface and mutually misplaced, and along the length direction of the concrete beam, it is arranged in a regular triangle, inverted triangle, regular triangle, inverted triangle... circular pattern; the U-shaped connector structures are arranged at intervals between the triangle connector structures, and the upper end It is horizontally lapped on the upper panels of the two concrete beams, and the lower end extends to the hinge joint between the two concrete beams. The present invention adopts the combination of the triangular connector structure and the U-shaped connector structure, which improves the shear resistance and tensile capacity as a whole.

Description

technical field [0001] The invention belongs to the field of concrete bridge structures, and in particular relates to the structure and arrangement method of hinged steel bar connectors in concrete beam bridge structures. Background technique [0002] Prefabricated concrete beams are widely used due to the advantages of fast construction and low cost. In the prefabricated bridge, each concrete beam is assembled horizontally through the cast-in-place groove-and-groove hinge joint, so that the concrete beams bear the load together. In order to achieve the purpose of joint force, the structure of the hinge joint is particularly important. Among the concrete beams currently in use, the failure of single beams caused by the damage of groove-and-groove hinge joints accounts for a large proportion of the failure of hollow slab beams. In addition, the bonding of new and old concrete at the contact surface is affected by the construction quality. Seams are prone to damage. When a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/00E01D21/00
CPCE01D19/00E01D21/00
Inventor 张国清张梅钗李志聪王朝杰张卫徐洪涛万水陈宝海王洪涛
Owner HEBEI PROVINCIAL COMM PLANNING & DESIGN INST
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