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Suspension bridge stiffening beam swinging installation method without horizontal pulling force

An installation method and technology of pulling force, which is applied in the swing installation field of stiffened beams of suspension bridges without horizontal pulling force, can solve the problems that the crane cannot directly lift vertically, and achieve the effects of simple and fast installation, safe construction and convenient operation

Pending Publication Date: 2019-02-01
中交二公局第五工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a suspension bridge stiffening girder swing installation method without horizontal pulling force, to overcome the problem that some segmental stiffening girders are located in shallow water areas or on land that transport ships cannot directly reach, and the crane cannot directly lift vertically

Method used

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  • Suspension bridge stiffening beam swinging installation method without horizontal pulling force
  • Suspension bridge stiffening beam swinging installation method without horizontal pulling force
  • Suspension bridge stiffening beam swinging installation method without horizontal pulling force

Examples

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Effect test

Embodiment 1

[0029] This embodiment provides a suspension bridge stiffening beam installation method without horizontal pulling force. The crane 1 is supported on the main cable 2, and the crane steel strand 3 and the stiffening beam pass through the sling 4 and the 5 to realize the swing installation of the stiffening beam 5.

[0030] This method overcomes the problem that part of the segmental stiffening beam 5 is located in a shallow water area or on land that cannot be directly reached by a transport ship, and the crane 1 cannot directly lift vertically.

Embodiment 2

[0032] On the basis of embodiment 1, this embodiment provides a kind of figure 1 The specific steps of the suspension bridge stiffening girder swing installation method shown without horizontal tension are as follows:

[0033] Step 1) Support the crane 1 on the main cable 2, and use the steel strand 3 of the crane to vertically lift the stiffening beam 5 to the swing height;

[0034] Step 2) pulling the lower end of the sling 4 to the stiffening beam 5, so that the lower end of the sling 4 is connected to the stiffening beam 5;

[0035] Step 3) The crane 1 transfers the load of the stiffening beam 5 to the sling 4 to realize the first switching connection. Under the tension of the sling 4, the stiffening beam 5 swings from the position of the crane 1 to the position of the sling 4, completing a shift;

[0036] Step 4) The crane 1 walks along the main cable 2 to another position and fixes it, and pulls the lower end of the steel strand 3 of the crane to the stiffening beam 5,...

Embodiment 3

[0046] On the basis of Embodiment 2, this embodiment provides a suspension bridge stiffening girder swing installation method without horizontal pulling force. The spreader conversion tool 6 is connected, and the spreader conversion tool 6 includes a connecting plate 1 7, a connecting plate 2 8, a fan-shaped plate 9 and a triangular plate 10, and the two ends of the connecting plate 1 7 and the connecting plate 2 8 are respectively provided with connecting holes , the three corners of the triangular plate 10 are provided with connecting holes, the arc of the fan-shaped plate 9 is provided with a plurality of lug holes, and the fan-shaped corners are provided with lug holes;

[0047] The two connecting holes of the connecting plate one 7 are pinned with a connecting hole on the triangular plate 10 and a lug hole on the arc of the sector plate 9 respectively, and the two connecting holes of the connecting plate two 8 are connected with the hanger respectively. 11 and the lug hol...

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Abstract

The invention belongs to the technical field of suspension bridge stiffening beam installation, and particularly relates to a suspension bridge stiffening beam swinging installation method without horizontal pulling force. A crane is supported on a main cable, and the swinging installation of a stiffening beam is realized through the switching connection between a sling and a crane steel strand ofthe crane and the stiffening beam. The stiffening beam is connected with the sling and the steel strand of the crane through a lifting device and a lifting device conversion tool, and the lifting device conversion tool realizes that a lifting point of the cable crossing crane and the center of gravity of the stiffening beam are on the same section in the whole swinging process, so that the stability of the stiffening beam in the whole construction process is ensured. According to the suspension bridge stiffening beam swinging installation method without the horizontal pulling force, large-scale equipment is not needed, influence from the external environment is little, the installation is simple and quick, the operation is convenient, the construction is safe, long-distance swinging installation can be realized, and beneficial reference is provided for the construction of similar bridges.

Description

technical field [0001] The invention belongs to the technical field of installation of stiffening beams of suspension bridges, and in particular relates to a method for swinging and installing stiffening beams of suspension bridges without horizontal pulling force. Background technique [0002] Suspension bridges are valued by builders for their large-spanning capabilities, and are widely used in projects across rivers, straits, and canyons. At present, traction swing is mostly used for the swing of stiffened beams. Traction swing means that after the cross-cable crane lifts the beam section to the swing height, the hoist is used to horizontally pull the crane spreader, so that the beam section is actively shifted from the lifting position to the installation position, and the corresponding sling is connected to the beam section After completion, the cross-cable crane unloads and completes the traction and swing of the beam section. In general, when the swing distance is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D11/02
CPCE01D11/02E01D21/00
Inventor 朱小金武尚伟杨敏王博张鑫敏郭雷刚李博白丽锋张富杰谢国强
Owner 中交二公局第五工程有限公司