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Loop bar connection type draw bar jack tension system and tension method therof

A rod connection and jack technology is applied in the field of sleeve rod connection type tie rod jack tensioning system, which can solve the problems of limited application and difficulty in ensuring the tensioning space of tie rod retraction, and achieves convenient operation, good economic benefits and low cost investment. Effect

Active Publication Date: 2014-03-12
CCCC SHEC FOURTH ENG +1
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AI Technical Summary

Problems solved by technology

In a construction environment with a narrow space, it is difficult to ensure the tension space required for the retrac

Method used

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  • Loop bar connection type draw bar jack tension system and tension method therof
  • Loop bar connection type draw bar jack tension system and tension method therof

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[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.

[0017] Such as figure 1 A sleeve rod connecting type tie rod jack tensioning system is shown, which includes a strand anchor head 1, a connector 2, a fixed reaction frame 8, a thin through jack 9, an anchor nut 10, a steel anchor box 11 and a tie rod device . The cable strand anchor head 1 and the steel anchor box 11 are relatively independent structures, which can move longitudinally in the steel anchor box 11. In their initial state, they are anchored on the end baffle plate of the steel anchor box 11 and connected with the cable strands. 2 is connected to both ends of the strand anchor head 1 through external threads, and the connector 2 is connected to the tie rod device through internal threads. The tie rod device is composed of...

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Abstract

The invention relates to the technical field of engineering construction of bridges, in particular to a loop bar connection type draw bar jack tension system, which is suitable for a narrow and small tension space and a long stretching distance. The system comprises a cable strand anchor head, a fixed counter-force frame, a thin type center penetration jack, an anchoring nut, a steel anchor box and a draw bar device. According to the system, a set constant stretching boundary condition of the cable strand anchor head is formed by the steel anchor box, the fixed counter-force frame and a fixed wall surface at the rear end of the counter-force frame, and the cable strand anchor head can be stretched to a position required by a design only by controlling the jacking and stretching travel of the thin type center penetration jack, rotating a loop bar or a draw bar to adjust and shorten the length of the draw bar device and increasing or reducing the filling quantity of non-return cushion blocks; and the system is convenient to operate and has a simple structure and a good economic benefit, and low cost can be input.

Description

technical field [0001] The invention relates to the technical field of bridge engineering construction, in particular to a tensioning system of a rod-connected tie rod jack suitable for narrow tensioning spaces and long stretching distances. Background technique [0002] With the development of my country's bridge industry, large-scale anchorage plate anchorage systems have begun to be applied to the main cable anchorage structure of suspension bridges. The anchor head of the cable strand and the steel anchor box in the anchorage plate system are independent of each other and do not function. The steel anchor box, the fixed reaction frame, and the fixed wall at the rear end of the fixed reaction frame together form a fixed cable anchor that cannot be changed. Boundary conditions of head stretching, the distance between the fixed reaction frame and the fixed wall at the rear end of the fixed reaction frame is very close, so the anchoring steel plate system faces the prominent...

Claims

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Application Information

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IPC IPC(8): E01D21/00
Inventor 张鸿何超然李宗平潘桂林钟永新曲洪春李有为陶圣志高飞汤叶帅王通尚龙刘新安李桂华
Owner CCCC SHEC FOURTH ENG
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