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Small-sagittal-degree-difference cableway bridge

A technology of vector and main cable, applied in the direction of suspension bridge, bridge, bridge construction, etc., can solve the problems of high cost, difficult to control the sag accuracy of the main cable of the air cable, and long construction period, so as to reduce the uneven stress and improve the The main cable stress and the effect of reducing the difference of the main cable sag

Pending Publication Date: 2019-10-22
POWERCHINA CHENGDU ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accuracy of the sag of the main cable of the empty cable is difficult to control, and it is difficult to adjust the sag of the main cable after the completion of the bridge, or the adjustment period is long and the cost is high

Method used

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  • Small-sagittal-degree-difference cableway bridge
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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] like figure 1 and image 3 As shown, the present invention includes anchorages 1 arranged on both banks of the river, and bridge abutments 5 are respectively arranged inside the anchorages 1 on both sides of the river, the main cable 2 is laid between the anchorages 1, and the top of the abutment 5 is provided with an abutment 5 corresponding to the main cable 2. Adapted cable saddle 6, the bridge deck 3 is laid on the main cable 2, and the pulley 4 is fixedly installed on the inner side of the anchorage 1. The pulleys 4 are arranged in a row along the width direction of the bridge deck, and the main cable 2 is between the pulleys 4 of the two anchorages 1. Pass through in sequence to form an S-shaped layout structure, and the ends of the main cables 2 are fixed. The main cable 2 can be set as one as a whole, or can be set as several after bein...

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Abstract

The invention relates to a small-sagittal-degree-difference cableway bridge, and belongs to the field of bridge engineering. According to the cableway bridge, steering pulleys are arranged on an anchorage, two or more adjacent main cables are enabled to be connected with each other, the sagittal degrees of the main cables connected with each other are kept consistent all the time, meanwhile, the absolute deflection difference is reduced by connecting the main cables, the number of the main cables of the whole bridge is reduced by 1 / 2-2 / 3 compared with the number of the main cables of a commoncableway bridge, even the whole bridge is formed by a steel wire rope, so that the absolute sagittal degree difference is reduced, even the deflection is equal, and the stress of the main cable is improved. According to the cableway bridge, the absolute sagittal degree difference of the free main cables can be reduced, a new main cable difference generated in the running period can be automatically coordinated to reduce the absolute sagittal degree difference or eliminate the main cable deflection difference, the deflection difference of the free main cables of the cableway bridge can be effectively improved, the situation of uneven stress between the plurality of main cables can be reduced, and the main cable deflection difference generated in the running process of the cableway bridge can be reduced.

Description

technical field [0001] The invention relates to a cableway bridge with small vector difference, which belongs to the field of bridge engineering. Background technique [0002] The cableway bridge is to set anchorages on both sides of the river respectively, lay multiple main cables side by side between the anchorages, lay bridge decks on the main cables, and vehicles drive on the bridge decks. The vehicle load is transmitted to the load-bearing main cable through the bridge deck, and the main cable transmits the force to the anchor anchors anchored on both banks. In the design and calculation of cableway bridges, it is usually assumed that the main cables are uniformly stressed together, but a large number of experimental data show that under the load, the internal force of the main cables is not uniform. The uneven internal force of the main cable is mainly caused by the construction deviation of the aerial cable sag when the main cable is erected, the uneven settlement of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D11/02E01D19/14
CPCE01D11/02E01D19/14
Inventor 杜洪亮傅支黔
Owner POWERCHINA CHENGDU ENG
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