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A critical movable main cable saddle for main cable anti-skid

A main cable saddle and mobile technology, which is applied to bridge parts, bridges, buildings, etc., to achieve the effect of ensuring anti-sliding safety, clear force relationship, and improving the selection space

Active Publication Date: 2018-07-31
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the anti-skid concept of using the sliding main cable saddle only pays attention to the short-term benefits and ignores the long-term disadvantages, which has obvious application limitations

Method used

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  • A critical movable main cable saddle for main cable anti-skid
  • A critical movable main cable saddle for main cable anti-skid
  • A critical movable main cable saddle for main cable anti-skid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] exist figure 1 , figure 2 with image 3 In the shown embodiment of the critically movable main cable saddle, a roller assembly is arranged between the main cable saddle 1 and the base plate 3 fixed on the bridge tower 2, and the assembly is composed of several rollers 4 and synchronous connecting plates 5 , used to support the main saddle 1 and make it move longitudinally. The limit block 6 fixed on the base plate 3 presses against the main cable saddle 1 to constrain its lateral displacement. Both the limit stopper 6 and the saddle body stopper 7 fixed on the main cable saddle 1 have reserved holes, and a buffer spring 8 is arranged between them. Taking the maximum main cable force difference allowed by the anti-skid of the main cable as the critical value, calculate the corresponding longitudinal unbalanced force acting on the saddle body, and select the connection strength between the limit tie rod 9 and the nut 10 accordingly. The limit pull rod 9 passes throug...

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Abstract

The invention discloses a critical movable main cable saddle for skid resisting of a main cable. The critical movable main cable saddle comprises a main cable saddle, a roller shaft assembly, a limiting apparatus and an ejection pushing apparatus, wherein a limiting drawing rod penetrates through a limiting stop block, a buffer spring and a saddle body stop block and is connected with a nut in parallel, so as to restrain the longitudinal displacement of the main cable saddle; when a main cable force difference is greater than a critical value, the connection between the limiting drawing rod and the nut is broken, the main cable saddle can move towards a side with large cable force, the buffer spring at the side is deformed under pressure, so as to weaken the kinetic energy of the main cable saddle; and when traffic is returned to be normal, a jack is started to push and restore the main cable saddle. By adopting the critical movable main cable saddle, not only can the structural stability and traveling comfort under a normal traffic load be ensured, but also the skid-resistant security of the main cable under a special traffic load can be ensured; the critical movable main cable saddle has the advantages of high adaptability, high automation degree, clear stress relationship and the like, and is particularly suitable for a multi-tower suspension bridge structure.

Description

technical field [0001] The invention belongs to the technical field of suspension bridges, and in particular relates to a critically movable main cable saddle used for anti-sliding of main cables. Background technique [0002] The main cable saddle is a permanent component supporting the main cable on the top of the bridge tower, which evenly transmits the pressure of the main cable and makes the transition of the main cable shape smooth. In order to ensure the safety of the structure, relative displacement between the main cable and the main cable saddle is not allowed. At present, the main cable saddle is mostly fixed on the bridge tower. At this time, the force difference of the main cable on both sides of the bridge tower is only resisted by the friction between the main cable and the main cable saddle, so the anti-skid ability of the main cable is relatively limited. [0003] The multi-tower suspension bridge is an ideal bridge type across wide waters such as bays and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/14
CPCE01D19/14
Inventor 沈锐利王路苗如松
Owner SOUTHWEST JIAOTONG UNIV
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