Method for locating main girder cable sleeve of cable-stayed bridge

A positioning method and cable-stayed bridge main technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of complex installation, easy to be affected by weather, poor reliability, etc., to achieve simple installation, simple construction method, The effect of saving technicians and equipment

Inactive Publication Date: 2012-12-19
CHINA CONSTR SEVENTH ENG BUREAU THE SECOND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the string method positioning is relatively accurate in accuracy, it has poor reliability and low efficiency. It needs to repeatedly set up the instrument, and it takes a lot of time and personnel to cooperate. The installation is complicated and it is easily affected by the weather.

Method used

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  • Method for locating main girder cable sleeve of cable-stayed bridge
  • Method for locating main girder cable sleeve of cable-stayed bridge
  • Method for locating main girder cable sleeve of cable-stayed bridge

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Embodiment Construction

[0022] The following is an implementation plan for building a sightseeing bridge in a wildlife park. The bridge is a cable-stayed bridge, and a main tower is connected to the main beam through 12 steel main beam cables S1, S2, ..., S12. Such as figure 1 As shown, the anchoring end 3 of each main girder cable 1 passes through the pre-embedded cable casing 2 in the main girder 5 and is anchored in the concave tooth-shaped space 4 at the bottom of the main girder. The angle of inclination formed between the anchorage end of each main girder cable and the bottom surface of the main girder is different, and it is required that the cable casing 2 embedded in the edge of the tooth-shaped space 4 is consistent with the inclination angle of the stay cable 1 .

[0023] The following is the positioning method of the cable casing:

[0024] 1. According to the cable positioning coordinate system given on the drawing and the positioning parameter table of the cable, the geometric dimension...

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Abstract

The invention discloses a method for locating a main girder cable sleeve of a cable-stayed bridge. The method comprises the steps of: (1) manufacturing a tooth block model for anchoring according to the physical dimension of a tooth block anchoring model; (2) fixing the tooth block anchoring model on the surface of a main girder bottom template according to the locating coordinate of a cable anchor point; (3) welding the lower end of the cable sleeve on an anchor plate, and fixing the anchor plate on the inclined plane of the tooth block anchoring model; and (4) manufacturing a cable sleeve embedded bracket to support the cable sleeve below the cable sleeve, thus enabling the angle and direction of the cable sleeve and the deviation of the cable sleeve along the bridge direction completely to accord with the design and specification requirement. The angle of the cable sleeve is ensured by adopting the cable sleeve embedded bracket; the construction method is simple; the calculation and the welding do not occupy the time limit for the project; and the installation is simple; time and effort are saved, and a lot of technicists and devices are saved.

Description

technical field [0001] The invention relates to the technical field of cable-stayed bridge construction, in particular to a positioning method for the cable casing of the main girder of the cable-stayed bridge. Background technique [0002] In the prior art, when constructing a cable-stayed bridge, the inclination angle positioning of the cable casing of the main girder stay cable is a very important construction link. A slight deviation will cause friction between the dragline and the edge of the cable casing, which will easily damage the dragline and become a hidden danger of a major accident. [0003] The traditional method is to measure and position the casing by the chord method. The method is: [0004] Firstly, according to the design drawing and the positioning control method, the corresponding positioning relationship data table is compiled. These data mainly include the pipe length, the angle between the horizontal projection of the center line of the cable casing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 王海鱼苏和何开卫
Owner CHINA CONSTR SEVENTH ENG BUREAU THE SECOND CO LTD
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