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Shelf beam support -free construction method for edge span beam section of large-span steel case beam stayed-cable bridge

A steel box girder, large-span technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as not being well solved, and achieve the effect of good economy, simple and practical method, and shortened construction period.

Active Publication Date: 2010-12-08
SICHUAN ROAD & BRIDGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of how to safely, economically and quickly complete the construction of the side-span girder sections of long-span steel box girder cable-stayed bridges has not been well resolved.

Method used

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  • Shelf beam support -free construction method for edge span beam section of large-span steel case beam stayed-cable bridge
  • Shelf beam support -free construction method for edge span beam section of large-span steel case beam stayed-cable bridge
  • Shelf beam support -free construction method for edge span beam section of large-span steel case beam stayed-cable bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the method for the construction of the side span beam section of the long-span steel box girder cable-stayed bridge of the present invention without a beam support, its construction steps are as follows:

[0032] (1) Set up a small temporary support 2 on the top of the auxiliary pier 1, lift the steel box girder section 4 on the top of the auxiliary pier 1 and place it on the small temporary support 2 and the top of the auxiliary pier 1,

[0033] (2) Remove a part 14 of the small temporary support 2 on the river center side, lift the steel box girder section 5 adjacent to the auxiliary pier 1 on the river center side and complete the installation and cable hanging,

[0034] (3) Put the steel box girder section 4 on the top of the auxiliary pier 1 in place and complete the corresponding connection and installation,

[0035] (4) Complete the hoisting construction of the side-span standard steel box girder section 7 of the auxiliary pier 1 and t...

Embodiment 2

[0043] Such as Figure 1-13 As shown, the method for the construction of the side-span girder section of the long-span steel box girder cable-stayed bridge of the present invention without a beam support, except that the construction step (1) is to push and move the auxiliary pier 1 pier top steel box girder section 4 to On the small temporary support 2 and the top of the auxiliary pier 1, the construction step (5) is to push and move the steel box girder section 10 on the top of the junction pier 6 to the top of the rear temporary support 15 and outside the top of the junction pier 6, and the rest are connected with Example 1 is the same.

Embodiment 3

[0044] Embodiment 3: the method for the construction of the side-span girder section of the long-span steel box girder cable-stayed bridge of the present invention without the beam support, except that the construction step (5) is to rotate the lower horizontal rotary hinge 8 and the upper horizontal rotary hinge 16 to make the front temporary The support 9 is located in the direction of the bridge, providing enough operating space for the hoisting of the steel box girder section 11 adjacent to the junction pier 6 on the river center side, and the rest are the same as in Embodiment 1.

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Abstract

The invention relates to a method for constructing a large-span steel box girder cable-stayed bridge side span girder section without shelf beam frame. The method comprises the steps as follows: a small falsework is set up at the top of an auxiliary pier; a steel box girder section at the top of the auxiliary pier is hoisted and is arranged at the small falsework and behind the top of the auxiliary pier; a part of the small falsework at the side of the river center is dismounted; the steel box girder section close to the auxiliary pier at the side of the river center is hoisted, and the installation and cable installation are finished; the steel box girder section at the top of the auxiliary pier is positioned, and corresponding connection and installation are finished; the construction for hoisting the side span standard steel box girder section between the auxiliary pier and a junction pier is finished; a front falsework and a back falsework are set up at the top of the junction pier; and the construction for hoisting the steel box girder section at the top of the junction pier and the steel box girder section close to the side of the river center close to the junction pier is finished. The construction method is simple, practical, safe and reliable and is restricted by the field environment condition less, and compared with the method for installing the large-span steel boxgirder cable-stayed bridge side span girder section, the construction method has very good economic performance.

Description

Technical field: [0001] The invention belongs to the technical field of steel box girder construction for bridge construction, and in particular relates to a method for constructing a side-span section of a long-span steel box girder cable-stayed bridge without a beam support. Background technique: [0002] With the continuous development of bridge design and construction technology, more and more long-span steel box girder cable-stayed bridges have been built. In the construction process of long-span steel box girder cable-stayed bridges, due to the limitation of site construction environment conditions, the hoisting construction of side-span steel box girder girder sections usually adopts: The large-tonnage floating crane lifts the steel box girder section of the side span to the river center side of the beam support, and then pulls or pushes it into place one by one, and then completes the beam support on the beam support in sequence according to the installation conditio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
Inventor 聂东于志兵张佐安裴宾嘉罗洋
Owner SICHUAN ROAD & BRIDGE GRP
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