CN109083009B - Construction method for transferring bridge deck slab by using multi-hoisting-point cable crane in mountainous area with limited site - Google Patents
Construction method for transferring bridge deck slab by using multi-hoisting-point cable crane in mountainous area with limited site Download PDFInfo
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- CN109083009B CN109083009B CN201810666804.3A CN201810666804A CN109083009B CN 109083009 B CN109083009 B CN 109083009B CN 201810666804 A CN201810666804 A CN 201810666804A CN 109083009 B CN109083009 B CN 109083009B
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- hoisting
- bridge deck
- cable
- truss girder
- steel truss
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention provides a construction method for transferring a bridge deck by using a multi-hoisting-point cable crane in a limited mountain area; the invention constructs a multi-hoisting point cable hoisting system on the basis of the existing cable hoisting system, the system is provided with a set of bearing cable, and three sets of traction and hoisting systems are arranged on the bearing cable, wherein 1 set of the system in front of each tower on two banks is used as a bridge deck plate transfer system for transfer construction of an approach bridge deck plate, and the operation range of the system is 100m in front of the tower; a set of main hoisting points is arranged in the span and used for mounting the steel truss girder, and the steel truss girder can run in the full span range; when the main hoisting point of the cable hoisting system is in midspan construction operation, the bridge deck is transported by using the bridge deck transporting system; the method is mainly used for solving the problem of transportation when the bridge approach is used for assembling the orthotropic steel bridge deck in the construction process of the suspension bridge in the limited mountainous area.
Description
Technical Field
The invention relates to a construction method of a transfer bridge deck, in particular to a construction method for hoisting a transfer bridge deck by using a multi-hoisting-point cable in a mountainous area with limited site.
Background
In the construction process of the suspension bridge in the limited mountainous area, an assembling field is usually arranged for assembling the steel truss girder and the bridge deck. For the area with steep terrain, the assembly field is difficult to set, the cost is high, the area of the assembly field is limited by the field and is small, and the assembly requirements of the steel trussed beams and the bridge deck can not be met at the same time, so the steel trussed beam assembly field is usually arranged at a bearing platform, the bridge deck is directly assembled by using a bridge approach bridge deck, the bridge deck is required to be transferred to the steel trussed beam assembly field after being assembled, and the bridge deck is lifted together with the steel trussed beams after being assembled. The following methods are currently generally used for the transfer of bridge decks:
firstly, directly utilize cable hoist system main hoisting point to carry out the transportation of decking, but cable hoist system only has a set of hoisting point, therefore must wait that a section of installation is accomplished and return the back, and the decking is transported and follow-up a series of construction operation can be carried out to the side, because steel longeron installation is longer with pulling the walking time, consequently there is a large amount of idle time midway in this mode, leads to the waste of mechanical equipment and manpower resources, construction cycle length.
Secondly, a set of working antenna system is independently arranged for transferring the bridge deck slab, but the orthotropic steel bridge deck slab is heavier after being assembled, and the arrangement span of the working antenna bearing cables is large, so that the system needs to consume a large amount of equipment and materials, and the construction cost is very high.
Thirdly, the installed main cable is used as a bearing cable, the bridge deck is transported only by means of independently setting the hoisting cable, the main cable is easily damaged by the aid of the method, the bridge deck can be transported to a designed position only by means of askew pulling after hoisting is completed, and construction is extremely irregular and safe risks exist.
Disclosure of Invention
Therefore, in order to solve the above-mentioned disadvantages, the present invention provides a construction method for transferring a bridge deck by using a multi-hoisting point cable crane in a limited mountainous area; the method is mainly used for solving the problem of transportation when the bridge approach is used for assembling the orthotropic steel bridge deck in the construction process of the suspension bridge in the limited mountainous area.
The invention is realized in this way, and the construction method for constructing the transfer bridge deck by using the multi-hoisting point cable crane in the mountainous area with limited site is characterized in that:
the multi-hoisting-point cable hoisting system is constructed on the basis of the existing cable hoisting system, the system is provided with a set of bearing cable, and three sets of traction and hoisting systems are arranged on the bearing cable, wherein 1 set of the system in front of each tower on two banks is used as a bridge deck plate transfer system for transfer construction of bridge deck plates of an approach bridge, and the operation range of the system is 100m in front of the tower; a set of main hoisting points is arranged in the span and used for mounting the steel truss girder, and the steel truss girder can run in the full span range; when the main hoisting point of the cable hoisting system is in midspan construction operation, the bridge deck is transported by using the bridge deck transporting system; the concrete construction steps are as follows:
the method comprises the following steps: arranging a steel truss girder assembling field and an approach bridge deck assembling field at a bearing platform, installing a multi-hoisting-point cable hoisting system, and arranging a bridge deck transferring system in front of the two-shore towers;
step two: installing front end beams of the two-bank towers by using main hoisting points and installing permanent slings, so that the bridge approach deck and the front end beams of the towers jointly form a bridge deck assembly field, and directly transporting subsequent bridge decks to the front end beam area of the towers for vertical hoisting;
step three: hoisting the first section of steel truss girder by using the cable hoisting system and dragging towards midspan, starting the bridge deck transfer system to transfer the bridge deck to a designed position on the steel truss girder assembly field after a main hoisting point of the cable hoisting system is dragged away from the steel truss girder assembly field, and returning the system to a tower front area for waiting after the bridge deck is transferred in place;
step four: assembling the steel truss girder and the bridge deck according to design requirements;
step five: after the first section of steel truss girder is installed, the main hoisting point returns to the steel truss girder assembling field for hoisting the next section;
step six: and repeating the third step to the fifth step until the installation of the steel truss girder is completed.
The invention has the following advantages: the invention provides a construction method for transferring a bridge deck by using a multi-hoisting-point cable crane in a limited mountain area; the method is mainly used for solving the transportation problem when the orthotropic steel bridge deck is assembled by using the approach bridge in the construction process of the suspension bridge in the limited mountainous area; when the patent is implemented according to the mode, the following advantages are achieved:
the existing cable hoisting system is directly utilized, the structural characteristic of small bearing tension in hoisting in front of the tower is fully utilized, a bearing main cable does not need to be arranged independently, the using amount of the bearing cable is greatly reduced, and the construction cost is low;
2, the installation of the system can be carried out while the installation of the cable hoisting system is carried out, the construction is convenient, and the construction period is short;
3, the bridge deck is lifted by utilizing multiple lifting points, the on-site flow operation is realized, the construction efficiency is high, and the utilization rate of equipment and personnel is high;
4, the device does not conflict with the permanent structure of the suspension bridge.
Drawings
Fig. 1-2 are schematic views of the construction method of the present invention.
Detailed Description
The present invention will be described in detail with reference to fig. 1-2, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a construction method for transferring bridge deck slab by using multi-hoisting point cable crane in a limited mountain area through improvement; the method is mainly used for solving the problem of transportation when the bridge approach is used for assembling the orthotropic steel bridge deck in the construction process of the suspension bridge in the limited mountainous area.
When the system is implemented, a multi-hoisting-point cable hoisting system is constructed on the basis of the existing cable hoisting system, the system is provided with a set of bearing cables, and three sets of traction and hoisting systems are arranged on the bearing cables, wherein 1 set of the system in front of each tower on two banks is used as a bridge deck plate transfer system for transfer construction of an approach bridge deck plate, and the operation range of the system is 100m in front of the tower; a set of main hoisting points is arranged in the span and used for installing the steel truss girder, and the steel truss girder can operate in the full span range. When the main hoisting point of the cable hoisting system is in midspan construction operation, the bridge deck is transported by the bridge deck transporting system. The concrete construction steps are as follows:
the method comprises the following steps: arranging a steel truss girder assembling field and an approach bridge deck assembling field at a bearing platform, installing a multi-hoisting-point cable hoisting system, and arranging a bridge deck transferring system in front of the two-shore towers;
step two: the front end beams of the two-bank tower are installed by using the main hoisting points, and the permanent sling is installed, so that the bridge approach deck and the front end beams of the tower jointly form a bridge deck assembly field, and the subsequent bridge decks are directly transported to the front end beam area of the tower to be vertically hoisted.
Step three: and hoisting the first section of steel truss girder by using the cable hoisting system and dragging towards midspan, starting the bridge deck transfer system to transfer the bridge deck to a designed position on the steel truss girder assembly field after a main hoisting point of the cable hoisting system is dragged away from the steel truss girder assembly field, and returning the system to a tower front area for waiting after the bridge deck is transferred in place.
Step four: and assembling the steel truss girder and the bridge deck according to design requirements.
Step five: after the first section of steel truss girder is installed, the main hoisting point returns to the steel truss girder assembling field for hoisting the next section;
step six: and repeating the third step to the fifth step until the installation of the steel truss girder is completed.
When the patent is implemented according to the mode, the following advantages are achieved:
(1) the existing cable hoisting system is directly utilized, the structural characteristic of small bearing tension when the tower is hoisted in front of the tower is fully utilized, a bearing main cable does not need to be arranged independently, the using amount of the bearing cable is greatly reduced, and the construction cost is low;
(2) the installation of the system can be carried out while the installation of the cable hoisting system is carried out, the construction is convenient, and the construction period is short;
(3) the bridge deck is lifted by utilizing multiple lifting points, the on-site line production is realized, the construction efficiency is high, and the utilization rate of equipment and personnel is high;
(4) without interfering with the suspension bridge permanent structure.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. A construction method for transferring bridge decks by using multi-hoisting-point cable cranes in mountainous areas with limited sites is characterized by comprising the following steps: the multi-hoisting-point cable hoisting system is constructed on the basis of the existing cable hoisting system, the system is provided with a set of bearing cable, and three sets of traction and hoisting systems are arranged on the bearing cable, wherein 1 set of the system in front of each tower on two banks is used as a bridge deck plate transfer system for transfer construction of bridge deck plates of an approach bridge, and the operation range of the system is 100m in front of the tower; a set of main hoisting points is arranged in the span and used for mounting the steel truss girder, and the steel truss girder can run in the full span range; when the main hoisting point of the cable hoisting system is in midspan construction operation, the bridge deck is transported by using the bridge deck transporting system; the concrete construction steps are as follows:
the method comprises the following steps: arranging a steel truss girder assembling field and an approach bridge deck assembling field at a bearing platform, installing a multi-hoisting-point cable hoisting system, and arranging a bridge deck transferring system in front of the two-shore towers;
step two: installing front end beams of the two-bank towers by using main hoisting points and installing permanent slings, so that the bridge approach deck and the front end beams of the towers jointly form a bridge deck assembly field, and directly transporting subsequent bridge decks to the front end beam area of the towers for vertical hoisting;
step three: hoisting the first section of steel truss girder by using the cable hoisting system and dragging towards midspan, starting the bridge deck transfer system to transfer the bridge deck to a designed position on the steel truss girder assembly field after a main hoisting point of the cable hoisting system is dragged away from the steel truss girder assembly field, and returning the system to a tower front area for waiting after the bridge deck is transferred in place;
step four: assembling the steel truss girder and the bridge deck according to design requirements;
step five: after the first section of steel truss girder is installed, the main hoisting point returns to the steel truss girder assembling field for hoisting the next section;
step six: and repeating the third step to the fifth step until the installation of the steel truss girder is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810666804.3A CN109083009B (en) | 2018-06-26 | 2018-06-26 | Construction method for transferring bridge deck slab by using multi-hoisting-point cable crane in mountainous area with limited site |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810666804.3A CN109083009B (en) | 2018-06-26 | 2018-06-26 | Construction method for transferring bridge deck slab by using multi-hoisting-point cable crane in mountainous area with limited site |
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| Publication Number | Publication Date |
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| CN109083009A CN109083009A (en) | 2018-12-25 |
| CN109083009B true CN109083009B (en) | 2020-03-24 |
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| CN201810666804.3A Active CN109083009B (en) | 2018-06-26 | 2018-06-26 | Construction method for transferring bridge deck slab by using multi-hoisting-point cable crane in mountainous area with limited site |
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| CN109914223B (en) * | 2019-04-26 | 2024-01-23 | 四川路桥华东建设有限责任公司 | Hoisting system suitable for suspension bridge steel structure bridge deck system and operation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006214113A (en) * | 2005-02-02 | 2006-08-17 | Jfe Koken Corp | Demolition method and erection method for bridge |
| CN101224856A (en) * | 2007-12-20 | 2008-07-23 | 中铁大桥局股份有限公司 | Long-span load-carrying cable lifting machine and mounting method therefor |
| CN101684639A (en) * | 2009-08-28 | 2010-03-31 | 中国第一冶金建设有限责任公司 | Process method for construction of steel-structured suspension bridge and light type cable carrying crane specially used in same |
| CN104674668A (en) * | 2015-01-19 | 2015-06-03 | 中铁大桥局集团有限公司 | Method for hoisting construction girder sections through cables |
| CN108118622A (en) * | 2018-02-06 | 2018-06-05 | 中交二公局第二工程有限公司 | A kind of steel-concrete composite beam cable-stayed bridge main cable and girder construction cable crane system |
-
2018
- 2018-06-26 CN CN201810666804.3A patent/CN109083009B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006214113A (en) * | 2005-02-02 | 2006-08-17 | Jfe Koken Corp | Demolition method and erection method for bridge |
| CN101224856A (en) * | 2007-12-20 | 2008-07-23 | 中铁大桥局股份有限公司 | Long-span load-carrying cable lifting machine and mounting method therefor |
| CN101684639A (en) * | 2009-08-28 | 2010-03-31 | 中国第一冶金建设有限责任公司 | Process method for construction of steel-structured suspension bridge and light type cable carrying crane specially used in same |
| CN104674668A (en) * | 2015-01-19 | 2015-06-03 | 中铁大桥局集团有限公司 | Method for hoisting construction girder sections through cables |
| CN108118622A (en) * | 2018-02-06 | 2018-06-05 | 中交二公局第二工程有限公司 | A kind of steel-concrete composite beam cable-stayed bridge main cable and girder construction cable crane system |
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Inventor after: Hu Hongjun Inventor after: Zhao Xiaoguang Inventor after: Li Qingpei Inventor after: Chen Gang Inventor after: Qiang Yonglin Inventor after: Zhou Yongkai Inventor after: Gong Jin Inventor before: Hu Hongjun Inventor before: Li Qingpei Inventor before: Chen Gang Inventor before: Qiang Yonglin Inventor before: Zhou Yongkai Inventor before: Gong Jin |
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