A double-beam anchor rod of a main cable anchorage system and its installation method

An anchoring system and installation method technology, used in the erection/assembly of bridges, buildings, bridge construction, etc., can solve problems such as short service life, fatigue cracks, and significantly increased anchor stress, and reduce the area and stress concentration factor. , the effect of improving the quality of important welds

Active Publication Date: 2022-05-06
CHINA MAJOR BRIDGE ENERGINEERING
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Problems solved by technology

[0006] 3. Anchor rods tend to have a significant increase in stress in parts where the shape and size change rapidly. Under the constantly changing load of the cable strands, fatigue cracks are prone to occur at the stress concentration, and the service life is short.

Method used

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  • A double-beam anchor rod of a main cable anchorage system and its installation method
  • A double-beam anchor rod of a main cable anchorage system and its installation method
  • A double-beam anchor rod of a main cable anchorage system and its installation method

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Embodiment Construction

[0041] In order to make the purpose, technical solution and advantages of the present application clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0042] In this example, if figure 1 As shown, it includes a flange plate 1, a web plate 2 and a support plate 3. The flange plate 1 has two pieces, including a first equal-width section 11, a gradually widening section 12 and a second equal-width section arranged in sequence from the beginning to the end. Section 13, the width of the first equal-width section 11 is smaller than the second eq...

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Abstract

The invention relates to the field of bridge engineering, and discloses a double-bundle anchor rod of a main cable anchorage system and an installation method thereof, including two flange plates, which are parallel and mirror images of each other, and each flange plate is divided into two parts and arranged in sequence. The first equal width section, gradual width section and second equal width section; the web, which is vertically arranged between two flange plates, and the web and flange plates form an I-shaped structure; the support plate, symmetrical It is arranged on both sides of the web, and the support plate is provided with installation grooves. The present invention has the following advantages and effects: by optimizing the shape of the flange plate and the force transmission plate, the stress concentration factor is reduced, and the effect of improving the local stress concentration phenomenon is achieved; at the same time, the area of ​​the flange plate is reduced, so that the force transmission plate and the web The operation space of the connecting weld between the plates becomes larger, which effectively improves the quality of the important weld at the end of the anchor rod, improves its mechanical performance and prolongs its service life.

Description

technical field [0001] The application relates to the technical field of bridge engineering, in particular to a double-beam anchor rod of a main cable anchorage system and an installation method thereof. Background technique [0002] At present, the span of the suspension bridge is relatively large, and the anchorage system of the main cable transmits the axial tension of the main cable to the anchorage, which is an extremely important stress-bearing structure. Main cable anchoring systems mainly include prestressed anchoring systems and section steel anchorage systems. The prestressed anchorage system uses less steel and is low in cost, but the steel beam stress is high; the section steel anchorage system uses high steel volume, high cost, and good durability. , high safety reserve. [0003] The anchor rods of the section steel anchorage system mainly include single-beam anchor rods and double-beam anchor rods. The double-beam anchor rods are small in size, and their ends ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/14E01D21/00
CPCE01D19/14E01D21/00
Inventor 高宗余肖海珠蔡銮王东晖唐贺强罗扣谢馨王东绪董学智彭凌风
Owner CHINA MAJOR BRIDGE ENERGINEERING
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