Real-time adjusting device and method for girder line type in bridge pushing process

Abstract

The invention discloses a real-time adjusting device and method for the girder line type in the bridge pushing process. The device comprises cable bent towers, cross braces between the cable bent towers, inhaul cables, a beam body anchoring device, an intelligent tensioning jack, a linear automatic measurement system, and an intelligent adjusting system. The cable bent tower comprises at least twosteel tube columns, web members and cable saddles; the bottoms of the at least two steel tube columns are fixedly connected with a steel box girder web plate; the web members are arranged at intervals in each steel tube column; the three cable saddles are arranged at intervals in each steel tube column; and every two adjacent steel tube columns are connected through at least two cable bent towercross braces; the middle of the inhaul cable is installed on the cable bent tower; and the two ends of the inhaul cable are connected to a steel box girder web or a guide beam connected with the pushing advancing end of the girder through a girder body anchoring device; the intelligent tensioning jack is mounted at one end of the inhaul cable; and the linear automatic detection system comprises aplurality of measuring points, an automatic measuring robot and a wireless transmitter. The device can control the line type of the cantilever section beam section, so that the smooth proceeding of the incremental launching construction is ensured.

Description

technical field

[0001] The invention relates to the technical field of bridge construction, in particular to a real-time adjustment device and an adjustment method for the line shape of a main girder during the bridge pushing process. Background technique

[0002] The jacking construction method is a common construction method for urban bridges. It has the advantages of fast and simple construction and less impact on traffic. It is especially suitable for the construction of long-span and long-lead cross-section beam bridge projects in cities. With the development of bridge engineering in our country, the span and weight of newly-built bridge structures continue to increase. In the process of main girder jacking, if the traditional jacking construction method is adopted, the deflection of the beam end of the cantilever section of the main girder is too large. There is no way to guarantee that the main beam will go up the pier smoothly. In order to solve this problem, it is ...

Examples

Embodiment Construction

[0039] see Figure 1 to Figure 3 , in a preferred embodiment of the present invention, a device for real-time adjustment of the main girder alignment during the bridge pushing process, including a cable tower 1, a cross-connection between the cable towers 4, a stay cable 7, and a beam body anchoring device 8 , Intelligent tensioning jack 10, automatic linear measurement system, intelligent adjustment system 13.

[0040]The cable tower 1 includes at least two steel pipe columns 6, web members 2 and cable saddles 3, at least two steel pipe risers are arranged at intervals along the width direction of the steel box girder section 5, and the bottom thereof is consolidated with the steel box girder web , in this embodiment, four steel pipe columns 6 are provided, and the height of each steel pipe column 6 is the same, which is 1 / 2.7 to 1 / 3.7 of the maximum span of the bridge. Specifically, the steel pipe column 6 is Φ630mm × 12mm steel pipe. Each steel pipe column 6 is provided w...

technical field

[0001] The invention relates to the technical field of bridge construction, in particular to a real-time adjustment device and an adjustment method for the line shape of a main girder during the bridge pushing process. Background technique

[0002] The jacking construction method is a common construction method for urban bridges. It has the advantages of fast and simple construction and less impact on traffic. It is especially suitable for the construction of long-span and long-lead cross-section beam bridge projects in cities. With the development of bridge engineering in our country, the span and weight of newly-built bridge structures continue to increase. In the process of main girder jacking, if the traditional jacking construction method is adopted, the deflection of the beam end of the cantilever section of the main girder is too large. There is no way to guarantee that the main beam will go up the pier smoothly. In order to solve this problem, it is ...

Examples

Embodiment Construction

[0039] see Figure 1 to Figure 3 , in a preferred embodiment of the present invention, a device for real-time adjustment of the main girder alignment during the bridge pushing process, including a cable tower 1, a cross-connection between the cable towers 4, a stay cable 7, and a beam body anchoring device 8 , Intelligent tensioning jack 10, automatic linear measurement system, intelligent adjustment system 13.

[0040]The cable tower 1 includes at least two steel pipe columns 6, web members 2 and cable saddles 3, at least two steel pipe risers are arranged at intervals along the width direction of the steel box girder section 5, and the bottom thereof is consolidated with the steel box girder web , in this embodiment, four steel pipe columns 6 are provided, and the height of each steel pipe column 6 is the same, which is 1 / 2.7 to 1 / 3.7 of the maximum span of the bridge. Specifically, the steel pipe column 6 is Φ630mm × 12mm steel pipe. Each steel pipe column 6 is provided w...

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