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Main-tower-free cable-stayed bridge suitable for wide and deep canyons and construction scheme

A technology for cable-stayed bridges and canyons, applied in the field of cable-stayed bridges without main towers and construction schemes, can solve problems such as difficulties in erecting the main towers of cable-stayed bridges, and achieve the effects of shortening the construction period, reducing project cost, and reducing difficulty

Pending Publication Date: 2021-04-30
四川省交通勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that it is difficult to erect the main tower of the cable-stayed bridge between wide and deep canyons, and the purpose is to provide a main tower-less cable-stayed bridge suitable for wide and deep canyons and a construction scheme that can effectively solve the above problems

Method used

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  • Main-tower-free cable-stayed bridge suitable for wide and deep canyons and construction scheme
  • Main-tower-free cable-stayed bridge suitable for wide and deep canyons and construction scheme
  • Main-tower-free cable-stayed bridge suitable for wide and deep canyons and construction scheme

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Embodiment 1

[0044] Such as Figure 1 to Figure 5 Shown, a kind of construction scheme of the main tower cable-stayed bridge that the present invention is applicable to wide and deep canyons, comprises following construction steps:

[0045] Step 1: construction of the inclined shaft 5, after the construction of the main line of the tunnel at both ends of the canyon is completed, an inclined shaft 5 is opened on both sides of the tunnel entrance at the two ends;

[0046] Step 2: Construction of the anchoring body 4, after the construction of the inclined shaft 5 is completed, pouring of the anchoring body 4 at the port of the inclined shaft 5;

[0047] Step 3: Install the tunnel anchor 3. After the construction of the anchor body 4 is completed, the anchor structure 32 of the tunnel anchor 3 is fixedly installed in the anchor body 4, and then the anchor structure 31 and the anchor structure 32 are connected through the bolt group 33 fixed;

[0048] Step 4: Install the main beam 1 and the ...

Embodiment 2

[0050] Such as Figure 1 to Figure 5As shown, a cable-stayed bridge without a main tower suitable for wide and deep canyons, its working principle is: the cable-stayed cable 2 is anchored into the mountain body by setting the tunnel anchor 3, and the anchor body 4 arranged in the mountain body is connected with the tunnel anchor. Used together, the cable-stayed cables 2 are fixed to provide tension for suspension and fixing of the main girder 1 to ensure the basic functions of the cable-stayed bridge without a main tower, thereby replacing the main tower of the cable-stayed bridge. This method can reduce construction difficulty and engineering cost. Among them, the combination of the inclined shaft 5 and the tunnel can provide a working space for the anchoring operation, and at the same time, it can facilitate the passage of construction personnel, equipment and materials. A cable-stayed bridge without a main tower includes a main girder 1, a cable-stayed cable 2, a tunnel anc...

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Abstract

The invention discloses a main-tower-free cable-stayed bridge suitable for wide and deep canyons and a construction scheme. The construction scheme comprises the following construction steps that 1, inclined shaft construction is conducted; 2, anchoring body construction is carried out; 3, tunnel anchors are installed; and 4, the main beam and the stay cable are installed. The cable-stayed bridge comprises a main beam, stay cables, tunnel anchors, anchoring bodies and inclined shafts, the two inclined shafts are arranged on the two sides of a tunnel portal, and the tunnel portal at each end is provided with the two inclined shafts. The anchoring body is arranged at the front end, close to the tunnel portal, of the inclined shaft, and a groove matched with the tunnel anchor is formed in the anchoring body; the tunnel is anchored in the anchoring body; one end of the stay cable is fixedly connected to the main beam, and the other end of the stay cable is connected with the tunnel anchor; the main beam is erected between canyons. The stay cables are anchored into the upper body through the tunnel anchors to provide force needed by hanging and fixing of the main beam, it is avoided that a main tower is arranged in the wide and deep canyons, then the difficulty of bridge construction between the wide and deep canyons is lowered, and meanwhile the engineering cost of bridge construction between the wide and deep canyons is lowered.

Description

technical field [0001] The invention relates to the field of road and bridge construction, in particular to a main-tower-less cable-stayed bridge suitable for wide and deep canyons and a construction scheme. Background technique [0002] The construction of national infrastructure of tunnels, mountain highways, railways, etc. are increasingly entering the western mountainous areas. Due to the complex terrain in the western mountainous area, there are more and more "mountain-canyon-mountain" situations, and the line must be crossed in the form of "tunnel-bridge-tunnel". Due to the strong mountains and steep canyons, they are often connected by bridges and tunnels. When the width of the canyon is not large, it is often possible to use conventional bridges to cross; the line is often controlled by the elevation, and the width of the steep canyon section is large, and it is difficult to use conventional bridges; cable-stayed bridges and suspension bridges are common forms of lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D11/04E01D19/14E01D21/00E01D101/24E01D101/30
CPCE01D11/04E01D19/14E01D21/00E01D2101/24E01D2101/30
Inventor 袁松冉龙洲宋松科刘伟杜桃明权新蕊
Owner 四川省交通勘察设计研究院有限公司
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