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Large-span cable-stayed bridge stay cable anchoring traction device and traction construction method thereof

The technology of a traction device and a cable-stayed anchor is applied in the construction field of cable-stayed bridges, which can solve the problems that the installation and operation requirements of large traction equipment cannot be met, the construction efficiency and construction period of the cable-stayed bridge are affected, and the operation and construction space is limited. The effect of saving anchoring box space, simple structure and low cost

Pending Publication Date: 2020-01-17
中铁大桥(郑州)缆索有限公司 +1
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the inner space of the anchor box is narrow and the operation and construction space is limited, which cannot meet the installation and operation requirements of large traction equipment. The construction efficiency and construction period of cable-stayed bridges increase the construction cost. With the continuous development of road and bridge technology, cable-stayed bridges with a span greater than 1km have appeared. For example, the Shanghai-Tongjiang River Bridge under construction has a main span of 1092 meters, the longest stay cable reaches 576.2 meters, and the traction force at the beam end reaches more than 300 tons when the stay cable is installed. unable to meet needs

Method used

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  • Large-span cable-stayed bridge stay cable anchoring traction device and traction construction method thereof
  • Large-span cable-stayed bridge stay cable anchoring traction device and traction construction method thereof
  • Large-span cable-stayed bridge stay cable anchoring traction device and traction construction method thereof

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] like figure 1 , figure 2 , image 3 Shown, a kind of long-span cable-stayed bridge stay cable anchoring traction device, wherein: comprise anchor box 1, cable conduit 2, traction device and back pressure device, described anchor box 1 is provided with cable conduit 2, described One end of the cable guide 2 is located in the anchor box 1, and the other end passes through the wall of the anchor box 1 and is located outside the anchor box 1. A traction device is provided in the anchor box 1, and the traction device includes a safety tension rod 3 , steel strand connector 4, traction steel strand 5, traction pressure bearing plate 6, thrust roller bearing assembly 7 and traction jack assembly 8, described insurance tension rod 3 is a screw rod, and described insurance tension rod 3 The upper end is connected to the lower end of the anchor cup 10 of the...

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Abstract

The invention relates to a large-span cable-stayed bridge stay cable anchoring traction device and a traction construction method thereof. The device comprises an anchoring box, a cable guide pipe, atraction device and a back pressure device, a cable guide pipe is arranged on the anchoring box, one end of the cable guide pipe is positioned in the anchoring box, and the other end penetrates through the box wall of the anchoring box and is positioned outside the anchoring box. A traction device is arranged in the anchoring box, and a back pressure device is arranged on the anchoring box. According to the invention, two modes of steel strand soft traction of the traction device and beam end back pressure of the back pressure device are combined, the anchor cup of the stay cable penetrates into the cable guide pipe of the anchoring box from the outer end of the cable guide pipe of the anchoring box through the traction device, then the anchor cup is pressed out along the cable guide pipe,penetrates into the anchoring box and is locked through the back pressure device, so that the installation and fixation of the stay cable of the cable-stayed bridge are achieved.

Description

technical field [0001] The invention belongs to the technical field of construction and construction of cable-stayed bridges, and in particular relates to a cable-stayed cable anchoring traction device for a long-span cable-stayed bridge and a traction construction method thereof. Background technique [0002] With the continuous development of road and bridge technology, cable-stayed bridges are widely used as one of the main types of long-span bridges. At present, the common types of cable-beam anchorage in long-span cable-stayed bridges mainly include: anchor box connection, ear plate type connection, anchor pipe connection and anchor tie plate connection. Anchoring box-type cable beam anchoring method is composed of two different materials, steel and concrete, and it is a combined structure that bears tension together. It has the characteristics of high structural strength, strong tensile capacity, convenient construction and high construction efficiency. Therefore, The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/14E01D21/00E01D11/04
CPCE01D11/04E01D19/14E01D21/00
Inventor 张召刘满意崔一兵李军堂张建武翟师冬王晓阳李云祥姬勇刚陈涛
Owner 中铁大桥(郑州)缆索有限公司
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