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A positioning structure of a bridge frame and its positioning construction method

A technology for positioning structures and bridges, applied in bridge construction, bridge erection/assembly bridges, etc., can solve problems such as difficult construction and limited construction space, and achieve the effects of increasing construction difficulty, improving construction efficiency, and realizing deviation adjustment

Active Publication Date: 2019-05-21
WENZHOU LYUSHUIQING MUNICIPAL GARDEN ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The erection and positioning process of prefabricated beams is an important part of the bridge construction process. In the existing construction technology, the erection and positioning of prefabricated beams follow the mode of first falling beams and then adjusting. The adjustment of beams usually uses high-power hydraulic jacks as temporary supports. Use the jack to push the beam body to realize the erection and positioning. However, the existing construction scheme is difficult because of the limited construction space after the beam body is erected to the support.

Method used

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  • A positioning structure of a bridge frame and its positioning construction method
  • A positioning structure of a bridge frame and its positioning construction method
  • A positioning structure of a bridge frame and its positioning construction method

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Embodiment 1

[0040] Common reference of embodiment one figure 1 and figure 2 , a bridge frame setting and positioning structure, including a bridge pier 20, a prefabricated beam 10 erected on the pier 20, a positioning system located above the pier 20, and a bearing 30 for supporting the prefabricated beam 10. In this embodiment, the prefabricated girder 10 is a prefabricated U-shaped girder, and of course it is also applicable to the erection and positioning of box girders or other bridges.

[0041]The whole positioning system includes four positioning devices 40, two positioning devices 40 are respectively installed on each bridge pier 20, and the four positioning devices 40 are arranged on the two bridge piers 20 in a rectangular arrangement; in addition, each bridge pier 20 is also provided with The two supports 30 are located between the two positioning devices 40 on the same pier 20 . The bottom of the prefabricated beam 10 is provided with four prefabricated columns 11 correspond...

Embodiment 2

[0051] Embodiment 2 A positioning construction method for setting a positioning structure of a bridge frame, comprising the following steps:

[0052] Step 1: Use a crane to lift the prefabricated beam 10, and hoist the prefabricated beam 10 to the position above the middle of two adjacent piers 20, and slowly drop the beam;

[0053] Step 2: Control the horizontal movement of the prefabricated beam 10 through the crane, slowly drop the beam so that the prefabricated column 11 at the bottom is slowly aligned with the third piston rod 452 of the lifting hydraulic jack 45, and start the lifting hydraulic jack 45 to make the third piston The rod 452 extends toward the side of the prefabricated beam 10 to the maximum stroke, and continues to drop the beam until the prefabricated cylinder 11 abuts against the end of the third piston rod 452 to stop the beam falling;

[0054] Step 3: Manually rotate the connecting sleeves 47 on the third piston rod 452, so that the four connecting sle...

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Abstract

The invention discloses a bridge erecting and positioning structure and a positioning and constructing method thereof. The bridge erecting and positioning structure comprises a precast beam and a positioning system mounted on piers, wherein the positioning system comprises four positioning devices which are arrayed in a rectangular manner; every two positioning devices are arranged on each pier; each positioning device comprises a base, an X-direction adjusting mechanism, a Y-direction adjusting mechanism and a Z-direction adjusting mechanism; each Z-direction adjusting mechanism is arranged on the corresponding Y-direction adjusting mechanism, and can be connected to the bottom of the precast beam; each Y-direction adjusting mechanism is arranged on the corresponding X-direction adjustingmechanism, and is used for adjusting the horizontal movement of the corresponding Z-direction adjusting mechanism in the Y-axis direction; the X-direction adjusting mechanism is arranged on the base,and is used for adjusting the horizontal movement of the corresponding Y-direction adjusting mechanism and the horizontal movement of the corresponding Z-direction adjusting mechanism in the X-axis direction; and mounting grooves allowing the corresponding positioning devices to be accommodated are formed in each pier. Through the adoption of the bridge erecting and positioning structure disclosed by the invention, in the beam lowering process, the precast beam can displace in the X-axis direction, in the Y-axis direction and in the Z-axis direction, so that the positioning and constructing efficiency of beam lowering is improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a bridge frame setting and positioning structure and a positioning construction method thereof. Background technique [0002] The erection and positioning process of prefabricated beams is an important part of the bridge construction process. In the existing construction technology, the erection and positioning of prefabricated beams follow the mode of first falling beams and then adjusting. The adjustment of beams usually uses high-power hydraulic jacks as temporary supports. The seat, using the jack to push the beam body to realize the erection positioning, but the existing construction scheme is difficult because of the limited construction space after the beam body is erected to the support, which makes the overall construction difficult. Contents of the invention [0003] The first object of the present invention is to provide a bridge frame setting and positio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 陈慧
Owner WENZHOU LYUSHUIQING MUNICIPAL GARDEN ENG CO LTD
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