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Suspension bridge main cable and main cable saddle dynamic contact state monitoring device and method

A condition monitoring device and dynamic contact technology, applied in the field of suspension bridges, can solve problems such as inability to monitor friction and slippage

Inactive Publication Date: 2020-06-23
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent can only monitor the lateral force of the main cable and the main cable saddle, and cannot monitor the radial force on the main cable saddle and the friction and slippage of the main cable inside the main cable saddle;

Method used

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  • Suspension bridge main cable and main cable saddle dynamic contact state monitoring device and method
  • Suspension bridge main cable and main cable saddle dynamic contact state monitoring device and method
  • Suspension bridge main cable and main cable saddle dynamic contact state monitoring device and method

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Embodiment Construction

[0049] The technical solutions of the present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0050] like figure 1 As shown, a suspension bridge main cable and main cable saddle dynamic contact state monitoring device, including test bench 6, main cable saddle 3, cable strand 2, vibration loading system, cable force loading system, stress monitoring system, friction monitoring system, Slip monitoring device.

[0051] The vibration loading system includes: a main cable clamp 5 and a vibration exciter 4, the main cable clamp 5 is fixed on the main cable to shape the main cable, the vibration exciter 4 is fixed on the main cable clamp 5, and the Vibration simulates the multi-dimensional force vibration of the main cable.

[0052] The cable force loading system includes: a through-type jack 1, an anchor nut, two ends of the main cable are pinned to a pull rod, the pull rod passes through the through-type jack 1,...

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Abstract

The invention discloses a suspension bridge main cable and main cable saddle dynamic contact state monitoring device and method. The monitoring device comprises a main cable saddle body, a vibration loading system, a cable force loading system, a stress monitoring system, a main cable saddle total friction force monitoring system and a main cable slippage monitoring device. The vibration loading system comprises a strand forming clamp and two vibration exciters, the vibration exciters are installed on the clamp, and multi-dimensional force vibration borne by amain cable is simulated through vibration of the vibration exciters. Dynamic contact stresses between the main cable and the main cable saddle, between the main cable and the partition plate and between the main cable and the cable strands, a total friction force between the main cable and the main cable saddle and slippage of the main cable can be monitored in real time. A test result can provide a certain basis for accurate calculation of the friction forces of the bottom surface and the side surface of the main cable, and the device can be used for a long time and has a certain scientific value and economic benefits.

Description

technical field [0001] The invention relates to a device and a method for monitoring the dynamic contact state of a main cable and a main cable saddle of a suspension bridge, and belongs to the technical field of suspension bridges. Background technique [0002] With the improvement of social development needs, long-span multi-tower suspension bridges are more and more popular in bridge construction because they can achieve a large spanning distance and have good economic benefits. The long-span multi-tower suspension bridge is composed of main cable, suspension cable, anchorage, cable tower, bridge deck system and other parts, in which the main cable is the main load-bearing component. The main cable passes through the arc-shaped saddle of the main cable saddle to realize the curve transition between the spans, and has a frictional contact relationship with the bottom of the saddle and the saddle partition; the main cable saddle must simultaneously bear the vertical pressur...

Claims

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Application Information

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IPC IPC(8): G01M7/02G01M13/00G01L5/00G01L1/24G01L1/22G01B5/02G01B5/00
CPCG01B5/0002G01B5/02G01L1/22G01L1/2206G01L1/242G01L5/0028G01M7/00G01M13/00
Inventor 王大刚沈小满张德坤叶继红高文丽朱辉龙
Owner CHINA UNIV OF MINING & TECH
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