Large-span bridging gantry crane and construction method thereof

A construction method and large-span technology, applied in the erection/assembly of bridges, bridges, bridge construction, etc., can solve problems such as the inability of hoisting technology to complete the construction, and achieve easy split-type hoisting and installation, ensure stability, and improve installation accuracy. and construction safety

Pending Publication Date: 2021-03-19
SICHUAN FIRST CONSTR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to expand the deck of the existing long-span river-crossing bridge or maintain the construction project. The existing hoisting technology cannot be used to complete the construction. After the temporary support piers are set up in the river channel to solve the problem of equipment layout, Still facing the technical problem of how to maintain the accuracy of equipment operation in the wading state, we provide long-span bridge-erecting gantry cranes and their construction methods. The long-span bridge-erecting gantry cranes skillfully start from the construction point of view to realize the deployment of gantry cranes on the existing cross-river bridges , easy to realize the hoisting operation, provide precise hoisting equipment for the widening, demolition or maintenance of the existing cross-river bridge, and ensure the accuracy of equipment wading construction

Method used

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  • Large-span bridging gantry crane and construction method thereof
  • Large-span bridging gantry crane and construction method thereof
  • Large-span bridging gantry crane and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Such as Figure 1 to Figure 5As shown, the long-span bridge erecting gantry crane of this embodiment includes temporary track bridges 4 arranged on both sides of the existing river-crossing bridge body 3, sliding tracks are arranged on the temporary track bridge 4, and also includes temporary track bridges arranged on both sides of the existing river-crossing bridge body 3. The gantry crane gantry 1 above the bridge body 3 across the river is connected with a support leg 2 below the gantry crane gantry 1, and the lower end of the support leg 2 is provided with a chute seat corresponding to the sliding track.

[0048] The long-span bridge erecting gantry crane in this embodiment skillfully starts from the construction point of view, setting temporary track bridges on both sides of the existing cross-river bridge, setting tracks on the track bridge, and configuring gantry cranes across the existing river-crossing bridge The outriggers of the gantry crane gantry and the tr...

Embodiment 2

[0050] Such as Figure 1 to Figure 5 As shown, according to the long-span bridge erecting gantry crane described in Embodiment 1, the gantry crane gantry 1 of this embodiment includes a main girder 101, on which a traveling mechanism 102 and a lifting trolley 104 are arranged, and on the main girder 101 there are also A lightning protection device 103 is provided.

[0051] In this embodiment, the main beam 101 is formed by splicing multiple beam segments. The main beam is divided into multi-section beam segment structure, which is convenient for detachable hoisting and installation.

[0052] Such as figure 2 As shown, the outrigger 2 includes a outrigger frame 201 , a chute seat 202 matching the sliding track is provided at the lowermost end of the outrigger frame 201 , and a staircase 203 is also provided on one of the outrigger frames 201 .

[0053] Further, in this embodiment, two gantry cranes 1 are provided on the temporary track bridge 4 . Two gantry cranes are inst...

Embodiment 3

[0055] Such as Figure 1 to Figure 5 As shown, according to the long-span bridge erecting gantry crane described in embodiment 1 or embodiment 2, the temporary track bridge 4 of this embodiment includes a steel box girder and a plurality of pier supports 5, and the steel box girder is composed of a plurality of pier supports 5 Supporting, the sliding track is arranged on the steel box girder, and the foundation pile is connected under the pier support 5, and the lower end of the foundation pile is arranged in the underwater concrete base 6.

[0056] In this embodiment, the bridge pier support 5 includes four steel pipe foundation piles 501, and each of the bridge pier supports 5 is provided with a flow blocking part in front of it, and the flow blocking part includes a drainage vertical shaft arranged approximately parallel to the steel pipe foundation piles 501. Pile 504, a diversion support is connected between the drainage vertical pile 504 and the steel pipe foundation pil...

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Abstract

The invention discloses a road and bridge construction technology. A large-span bridge gantry crane comprises temporary track bridges arranged on the two sides of an existing river-crossing bridge, sliding tracks are arranged on the temporary track bridges, the large-span bridge gantry crane further comprises a gantry crane portal frame arranged above the existing river-crossing bridge, supportinglegs are connected to the lower portion of the gantry crane portal frame, and sliding groove bases corresponding to the sliding tracks are arranged at the lower ends of the supporting legs. The large-span bridge gantry crane ingeniously starts from the construction angle, gantry crane equipment is arranged above an existing river-crossing bridge, hoisting operation is easily achieved, precise hoisting equipment is provided for widening or dismantling or maintaining construction of the existing river-crossing bridge, and the wading construction precision of the equipment is guaranteed.

Description

technical field [0001] The invention relates to a road and bridge construction technology, in particular to a long-span bridge erecting gantry crane and a construction method thereof. Background technique [0002] The construction of long-span river-crossing bridges still has many problems that need to be overcome for modern road and bridge construction technology. There are many challenges in the bridge deck widening or maintenance construction of existing river-crossing bridges, but most modern cities are near rivers and rivers. There will be more and more cases of maintenance, overhaul or demolition of existing river-crossing bridges, which will become a technical problem that has to be solved in the field of modern road and bridge construction technology. [0003] Specifically, the inability to directly use cranes and other equipment for hoisting operations on both sides of the river is the key to the difficulty in updating or maintaining the cross-river bridge; in addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 李蛟李林何江宏邓永华蒋世勇张建华赵本红
Owner SICHUAN FIRST CONSTR ENG
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