Composite anchoring structure on guyed tower end of cable-stayed bridge

An anchoring structure and end plate technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of increasing high-altitude prestressed construction links, reducing structural durability, and slow construction speed, so as to improve bearing capacity and construction speed , cost-saving effect

Inactive Publication Date: 2010-01-20
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the exposed steel anchor box must be prestressed in the hoop direction on the tower wall, adding a large number of high-altitude prestressing construction links, making the construction speed slower
Although the built-in steel anchor box structure can control the width of the crack through reinforcement, the durability of the structure

Method used

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  • Composite anchoring structure on guyed tower end of cable-stayed bridge
  • Composite anchoring structure on guyed tower end of cable-stayed bridge
  • Composite anchoring structure on guyed tower end of cable-stayed bridge

Examples

Experimental program
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Effect test

Embodiment

[0045] Such as figure 1 and figure 2 , the steel anchor box 2 and the end box chamber 3 are processed and integrated in the factory. After being transported to the construction site, according to the hoisting capacity, several sections of the steel anchor box are assembled on the ground and then hoisted or a single section is hoisted and positioned and then spliced ​​on the tower. Segment splicing can be bolted or welded. After the steel anchor box is positioned, the reinforcement cage and the tower wall formwork are installed, and the steel bars are penetrated through the hole in the end box chamber. Then pour the square frame-shaped tower wall concrete inside and outside the end chamber, make the steel anchor box and the concrete tower wall 1 be connected as a whole, and the perforations on each steel plate are poured into concrete to form perforated plate connectors.

[0046] In order to avoid stress concentration near the end plate of the anchor box, in the design, the...

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PUM

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Abstract

The invention relates to a composite anchoring structure on the guyed tower end of a cable-stayed bridge. A plurality of steel anchor boxes with end box chambers are overlapped, and cast concrete with reinforcing bars penetrating through pinholes is arranged on the end box chambers. The box chambers are arranged on both ends of a steel anchor box and share the same end plate, a faceplate is arranged correspondingly opposite to the end plate, the end plate and the faceplate are connected by lateral plates on both sides to form a box chamber structure, the lateral plates are provided with a plurality of pinholes, and through holes are arranged on the lower part of the faceplate so that guyed sleeves can penetrate through. The invention accelerates the construction speed of a bridge tower, is convenient to manufacture, and has favorable durability.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to an anchoring structure of a cable-stayed tower end of a cable-stayed bridge. Background technique [0002] The cable force of the long-span cable-stayed bridge is relatively large, so that the anchorage area of ​​the cable tower is subjected to a strong concentrated force. If the prestressed cable tower anchoring method is used, a considerable amount of hoop prestressing force needs to be configured to meet the force requirements, and the difficulty of construction and later maintenance will increase accordingly. Therefore, long-span cable-stayed bridges are anchored by steel anchor boxes or steel anchor beams combined with concrete tower walls. Steel anchor boxes or steel anchor beams are used to bear most of the horizontal force, and concrete is used to bear most of the vertical force. The advantages of the two materials meet the stress requirements of t...

Claims

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Application Information

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IPC IPC(8): E01D19/14
Inventor 刘玉擎邢昕赵晨王倩
Owner TONGJI UNIV
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