Length adjusting device and mounting system and method for stiffening beam of suspension bridge

A technology of length adjustment and installation system, used in suspension bridges, erection/assembly bridges, bridges, etc., can solve the problems of the installation angle and installation position of the stiffening beams being difficult to adjust, affecting the installation accuracy of the stiffening beams, etc. Adjustable effects

Active Publication Date: 2017-03-29
CHINA FIRST HIGHWAY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the installation method of the stiffening beam of the suspension bridge is mainly to install the stiffening beam first, and then install the support between the stiffening beam and the lower beam of the tower body after the stiffening beam is installed. In the prior art, after the stiffening beam is installed, the stiffening The installation angle and installation position of the beam are not easy to adjust, and the way of installing the support after the installation is easy to cause repeated adjustment of the stiffening beam, thus affecting the installation accuracy of the stiffening beam

Method used

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  • Length adjusting device and mounting system and method for stiffening beam of suspension bridge
  • Length adjusting device and mounting system and method for stiffening beam of suspension bridge
  • Length adjusting device and mounting system and method for stiffening beam of suspension bridge

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Embodiment 1

[0027] see figure 1 and figure 2 , the present embodiment provides a suspension bridge stiffening beam installation system, which is suitable for installing the stiffening beam 200 on the main tower 300 . The main tower 300 includes a tower body 301 and a lower beam 302, the lower beam 302 is fixedly connected to the tower body 301, the main tower 300 is divided into an upstream tower column and a downstream tower column, and a main cable 303 is arranged between the upstream tower column and the downstream tower column .

[0028] The stiffening girder installation system of the suspension bridge includes a support 110, a temporary sling 120, a length adjusting device 140, a span crane 130 and a winch (not shown).

[0029] The support 110 is installed between the lower beam 302 of the main tower 300 and the stiffening beam 200. In this embodiment, the support 110 is installed first, and the stiffening beam 200 is installed after the support 110 is accurately installed. Wher...

Embodiment 2

[0059] see Figure 7 In this embodiment, a length adjusting device 240 is provided, and the length adjusting device 240 is also connected with the temporary sling 120 for hanging and installing the stiffening beam 200 . The length adjustment device 240 in this embodiment is basically the same as the length adjustment device 140 in Embodiment 1 in terms of structure, connection method and installation method for installing the stiffening beam 200. The difference is that in this embodiment, the length adjustment device 240 It also includes a protection mechanism 245. In this embodiment, reference numerals not mentioned can refer to Embodiment 1.

[0060] The protection mechanism 245 includes a first wire rope 246 , a second wire rope 247 and a third wire rope 248 .

[0061] Both ends of the first steel wire rope 246 are respectively connected to the first adjusting screw 141 and the second adjusting screw 142 , and the length of the first steel wire 246 is greater than the leng...

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Abstract

The invention provides a length adjusting device and a mounting system and method for a stiffening beam of a suspension bridge and relates to the technical field of bridge construction. The device comprises a first adjusting screw, a second adjusting screw and adjusting sleeves, wherein the directions of thread lines of the first adjusting screw and the second adjusting screw are opposite, and the adjusting sleeves are connected to the outer sides of the first adjusting screw and the second adjusting screw through threads. The mounting system comprises a mounting support, a cable crane, a winch, a temporary lifting cable and the length adjusting device, the temporary lifting cable comprises a first lifting cable section and a second lifting cable section which are connected to the two ends of the length adjusting device, one end of the first lifting cable section is connected with the top of a tower body, and one end of the second lifting cable section is connected with a first girder section. According to the mounting system, the length of the temporary lifting cable is adjusted by utilizing the length adjusting device so as to adjust the mounting angle and mounting position of the stiffening beam, so that adjustment is more convenient. Besides, in the method, the support is first mounted; then, the stiffening beam is mounted on the support, and the mounting of the stiffening beam is adjusted by utilizing the length adjusting device of the temporary lifting cable; and therefore, mounting is more precise.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a length adjustment device, a suspension bridge stiffening beam installation system and a method. Background technique [0002] Suspension bridge, also known as suspension bridge, refers to a bridge whose main weighing member of the upper structure is the cable suspended by the tower and anchored on both sides of the bank. In order to avoid the deformation of the bridge deck along with the suspension cables when the vehicle is running, modern suspension bridges are generally equipped with stiffening beams. The stiffening girder of the suspension bridge mainly plays the role of fabricating and transmitting load, and is the main component bearing wind load and other transverse horizontal forces. [0003] At present, the installation method of the stiffening beam of the suspension bridge is mainly to install the stiffening beam first, and then install the support betwee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/16E01D11/02
CPCE01D11/02E01D19/16E01D21/00
Inventor 任威李文毛超军李鸿盛宾熊杨世好屈加林
Owner CHINA FIRST HIGHWAY ENG
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