CN110904861A - Cable-stayed bridge girder erection crane and construction method thereof - Google Patents
Cable-stayed bridge girder erection crane and construction method thereof Download PDFInfo
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- CN110904861A CN110904861A CN201911252775.7A CN201911252775A CN110904861A CN 110904861 A CN110904861 A CN 110904861A CN 201911252775 A CN201911252775 A CN 201911252775A CN 110904861 A CN110904861 A CN 110904861A
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- crane
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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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C25/00—Cranes not provided for in groups B66C17/00 - B66C23/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
-
- 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
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a cable-stayed bridge girder erection crane and a construction method thereof, and relates to the technical field of bridge construction. The intelligent crown block system, the crane bracket and the walkway beam are all movable, the problem that steel beams cannot be transported in a dry season on the shore side is solved, the position relation between the steel beams to be erected and the erected steel beams is adjusted by moving the intelligent crown block system, construction operation is facilitated, difficulty and cost of moving the crane bracket are reduced, and construction efficiency is high.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a cable-stayed bridge girder erection crane and a construction method thereof.
Background
In the existing construction method of the steel box girder of the cable-stayed bridge with water transportation conditions, a ship is generally adopted for transporting a girder section to be erected, and the installation of the steel box girder is realized by configuring a large-scale special girder erection crane and erecting a support platform in water, so that the normal installation of the steel box girder can be ensured only by manually moving the girder erection crane continuously and in enough operation space; in addition, the method for realizing the hoisting operation of the steel box girder on water by adopting the large-scale floating crane has the precondition that the water level needs to meet the stop requirement of the crane ship, particularly, the water level change is large in the upper reaches of the Yangtze river, the large-scale floating crane cannot be used in the dry season, the method has higher requirement on the height of the water level, and the large-scale floating crane is expensive. Therefore, the existing steel box girder construction methods have the problems of high construction difficulty, high requirements on construction environment and the like.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a cable-stayed bridge girder erection crane and a construction method thereof, which can solve the problems of high construction difficulty, high requirement on construction environment and the like in the conventional steel box girder construction method and have high construction efficiency.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
a cable-stayed bridge frame beam crane comprising: the first steel rail is arranged on the walkway beam, and the walkway beam is movably fixed on the erected steel beam; the crane support is provided with a second steel rail and is arranged on the first steel rail; the intelligent overhead traveling crane system is provided with a rotary lifting appliance, the rotary lifting appliance is used for being connected with a steel beam to be erected, and universal traveling wheels are fixed at the bottom of the intelligent overhead traveling crane system and slide on the second steel rail through the universal traveling wheels.
On the basis of the technical scheme, the beam erecting crane further comprises a screw jack, the bottom surface of the screw jack is connected with the erected steel beam, and the top surface of the screw jack is connected with the bottom of the crane support.
On the basis of the technical scheme, the screw jacks comprise a first screw jack group and a second screw jack group, and the first screw jack group and the second screw jack group are respectively positioned on two sides of the walkway beam.
On the basis of the technical scheme, the girder erection crane further comprises a clamping plate, and the clamping plate is used for connecting the walkway girder and the erected steel girder.
On the basis of the technical scheme, the length of the crane bracket is smaller than that of the first steel rail.
On the basis of the technical scheme, the first steel rail is provided with the antiskid plate in an attached mode, and the antiskid plate is used for increasing the friction force between the first steel rail and the crane support.
On the basis of the technical scheme, the girder erection crane further comprises a rear anchor device, and the rear anchor device is used for connecting the crane bracket and the erected steel girder.
On the basis of the technical scheme, the rear anchor device comprises a longitudinal push-pull rod, one end of the longitudinal push-pull rod is connected with the crane support, and the other end of the longitudinal push-pull rod is used for pushing and pulling the crane support.
A construction method of a cable-stayed bridge girder erection comprises the steps of erecting a walkway girder on a first erected steel beam, wherein a first steel rail is arranged on the walkway girder;
erecting a crane bracket provided with a second steel rail on the first steel rail, wherein the crane bracket is connected with a first erected steel beam through a rear anchor device;
a universal traveling wheel is mounted at the bottom of the intelligent crown block system and slides on the second steel rail through the universal traveling wheel, and a rotary lifting appliance is mounted on the intelligent crown block system;
the steel beam to be erected is conveyed to a point to be erected, the intelligent overhead crane system lifts the steel beam to be erected through a rotary lifting appliance, and the steel beam to be erected and the first erected steel beam are assembled, so that the steel beam to be erected becomes a second erected steel beam;
placing a screw jack on the first erected steel beam, jacking the crane bracket by using the screw jack to separate the crane bracket from the walkway beam, and moving the walkway beam to the second erected steel beam;
and removing the screw jack, and pulling the longitudinal push-pull rod to enable the rear anchor device, the crane bracket and the intelligent crown block system to travel to the walkway beam on the second erected steel beam together.
Compared with the prior art, the invention has the advantages that:
(1) the invention relates to a cable-stayed bridge girder erection crane and a construction method thereof, wherein a rotary lifting appliance is arranged on an intelligent crown block system, the actual occupied space is small, the operation space is large, and the position relation between a steel beam to be erected and the erected steel beam is adjusted by moving the intelligent crown block system, so that the construction operation is convenient; the intelligent overhead traveling crane system, the crane support and the walkway beam are all movable, the problem that steel beams cannot be transported in a dry season on the side close to the shore is solved, the construction difficulty is reduced, and the construction efficiency is improved.
(2) The girder erection crane lifts the crane support by using the screw jack, so that the crane support is separated from the walkway beam, the walkway beam is moved to the erected steel beam, and the rear anchor device, the crane support and the intelligent overhead traveling crane system are moved to the erected steel beam together by using the longitudinal push-pull rod, so that the moving difficulty and cost of the crane support are reduced, and the construction efficiency is high.
Drawings
Fig. 1 is a schematic structural diagram of a cable-stayed bridge crane according to an embodiment of the invention;
fig. 2 is a partial structural schematic view of a cable-stayed bridge girder erection crane in the embodiment of the invention;
FIG. 3 is a schematic view of a construction for erecting a steel beam to be erected according to an embodiment of the present invention;
FIG. 4 is a schematic view of the construction of erecting an initial steel beam to be erected according to an embodiment of the present invention.
In the figure: 1-walkway beam, 2-crane support, 3-intelligent overhead travelling crane system, 3A-rotary hanger, 4-screw jack, 4A-first screw jack group, 4B-second screw jack group, 5-clamping plate, 6-rear anchor device, 6A-longitudinal push-pull rod, 7-steel beam to be erected, 8-stay cable main pier, 9-pier side bracket, 10-station support, 11-erected steel beam, 11A-first erected steel beam, 11B-second erected steel beam.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, an embodiment of the invention provides a cable-stayed bridge frame beam crane, which comprises a walkway beam 1, a crane bracket 2 and an intelligent overhead traveling crane system 3, wherein the walkway beam 1 is provided with a first steel rail, the walkway beam 1 is movably fixed on a steel beam 11 which is already erected, a bracket platform is not required to be erected to realize the installation of the steel box beam, the steel consumption is further saved, and an anti-skid plate is adhered to the first steel rail and used for increasing the friction force between the first steel rail and the crane bracket 2; the crane bracket 2 is provided with a second steel rail which is positioned on the first steel rail of the walkway beam 1, the main body is of a truss structure, the transverse rigidity between the crane brackets 2 is increased through a transverse connecting system and an anchoring beam, and the transverse stability of the structure is ensured; the intelligent crown block system 3 is positioned on a second steel rail of the crane bracket 2 and consists of a rotary lifting appliance 3A, a rail travelling device, a girder and a winch device, wherein the rail travelling device consists of a rail and a wheel box, the rail is placed on the walkway beam 1, the girder consists of a distribution beam and a Bailey beam, the Bailey beam can ensure that a vertical load is transmitted to the rear anchor device, the distribution beam is placed on the wheel box, and the Bailey beam is placed on the distribution beam to form a winch foundation; the winch device mainly comprises two winches, a base and a central pulley block, wherein the base is placed on the distribution beam, the winches are arranged on the base, the central pulley block is fixed on the distribution beam, the winches of different types can be arranged according to the weight of the steel box girder, and the rotary lifting appliance 3A is used for being connected with the steel girder 7 to be erected.
The universal traveling wheels are fixed at the bottom of the intelligent crown block system 3, and can horizontally move on the crane support 2 by adopting computer numerical control, so that the position relation between the steel beam 7 to be erected and the erected steel beam 11 can be conveniently adjusted, the adjustment is not required by moving the crane support 2, the uniform and accurate installation of the steel box beam is ensured, the construction cost is reduced, and the construction efficiency is improved.
Preferably, the length of the first rail is greater than that of the crane support 2, so that the crane support 2 and the walkway girder 1 can be moved easily.
Preferably, the girder erection crane further comprises a clamping plate 5, wherein the clamping plate 5 is used for connecting the walkway girder 1 and the erected girder 11, and the clamping plate 5 can be detached at any time according to the disassembly and assembly requirements, so that the walkway girder 1 is separated from the erected girder 11.
Preferably, the girder erection crane further comprises a rear anchor device 6 for connecting the crane bracket 2 and the erected steel girder 11; the rear anchor device 6 comprises a longitudinal push-pull rod 6A, one end of the longitudinal push-pull rod 6A is connected with the crane bracket 2, and the other end of the longitudinal push-pull rod 6A is used for pushing and pulling the crane bracket 2.
Referring to fig. 2, the girder erection crane further includes a screw jack 4, a bottom surface of the screw jack 4 is connected to the erected steel girder 11, an upper surface thereof is connected to a bottom of the crane support 2, the screw jack includes a first screw jack group 4A and a second screw jack group 4B, the first screw jack group 4A and the second screw jack group 4B are respectively located at two sides of the walkway girder 1, and the screw jack 4 is used for jacking the crane support 2 to separate the crane support 2 from the walkway girder 1, so that the walkway girder 1 can be conveniently moved to the erected steel girder 11.
The working process of the beam erecting crane is as follows: placing a steel beam 7 to be erected on a steel beam transport ship, when the steel beam is transported to the position right below a crane support 2, fixing a rotary lifting appliance 3A on the steel beam 7 to be erected, lifting the steel beam 7 to be erected through an intelligent crown block system 3, assembling a steel beam cantilever after reaching a specified position, installing a stay cable after assembling, walking the crane support 2 to the next erected steel beam 11 after the stay cable is stretched in place, and repeating the steps until all the steel beams 7 to be erected are installed.
Referring to fig. 3, a construction method of a cable-stayed bridge girder according to an embodiment of the present invention includes the following steps:
s1: a walkway girder 1 is erected on the first erected steel beam 11A, the first rail is installed on the walkway girder 1, and the process goes to S2.
S2: the crane bracket 2 provided with the second rail is erected on the first rail, and the crane bracket 2 is connected to the first erected steel beam 11A through the rear anchor device 6, and then the operation goes to S3.
S3: install universal traveling wheel and slide on the second rail through universal traveling wheel at the bottom of intelligence overhead traveling crane system 3, install rotatory hoist 3A on the intelligence overhead traveling crane system 3, go to S4.
S4: and (3) conveying the steel beam 7 to be erected to a point to be erected, hoisting the steel beam 7 to be erected by the intelligent crane system 3 through the rotary lifting tool 3A, assembling the steel beam 7 to be erected and the first erected steel beam 11A, enabling the steel beam 7 to be erected to become a second erected steel beam 11B, and turning to S5.
S5: the screw jack 4 is placed on the first erected steel beam 11A, the crane support 2 is lifted up by the screw jack 4, the crane support 2 is separated from the walkway beam 1, the walkway beam 1 is moved to the second erected steel beam 11B, and the process goes to S6.
S6: and (3) removing the screw jack 4, pulling the longitudinal push-pull rod 6A, enabling the rear anchor device 6, the crane bracket 2 and the intelligent overhead traveling crane system 3 to travel to the walkway beam 1 on the second erected steel beam 11B together, and repeating the steps 4 to 6 to install the next steel beam 7 to be erected.
Referring to fig. 4, the construction method further includes the steps of:
erecting pier-side brackets 9 on two side surfaces of a main stay cable pier 8, and erecting a station bracket 10 on the pier-side brackets 9;
a walkway beam 1, a crane bracket 2 and an intelligent crown block system 3 are sequentially arranged on a station bracket 10, and the crane bracket 2 is connected with the station bracket 10 through a rear anchor device 6;
the steel beam 7 to be erected is conveyed to a point to be erected, the intelligent crown block system 3 lifts the steel beam 7 to be erected to the pier-side bracket 9 and installs the steel beam to be erected to enable the steel beam 7 to be the erected steel beam 11, and the connection relation between the crane support 2 and the station support 10 is removed;
placing a screw jack 4 on the standing position support 10, jacking the crane support 2 by using the screw jack 4 to separate the crane support 2 from the walkway beam 1, and moving the walkway beam 1 to the erected steel beam 11;
removing the screw jack 4, and pulling the longitudinal push-pull rod 6A to enable the rear anchor device 6, the crane bracket 2 and the intelligent overhead traveling crane system 3 to travel to the walkway beam 1 on the erected steel beam 11 together;
and (5) dismantling the station support 10 to finish the erection of the initial steel beam to be erected.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (9)
1. The utility model provides a cable-stay crane span structure roof beam loop wheel machine which characterized in that includes:
the steel beam structure comprises a walkway beam (1), wherein a first steel rail is arranged on the walkway beam (1), and the walkway beam (1) is movably fixed on a steel beam (11) which is already erected;
the crane support (2) is provided with a second steel rail, and the crane support (2) is arranged on the first steel rail;
intelligence overhead traveling crane system (3), be equipped with rotatory hoist (3A) on intelligence overhead traveling crane system (3), rotatory hoist (3A) are used for with treat a girder steel (7) and be connected, intelligence overhead traveling crane system (3) bottom is fixed with universal traveling wheel and is in through universal traveling wheel slide on the second rail.
2. The cable-stayed bridge frame beam crane of claim 1, characterized in that: the girder erection crane further comprises a screw jack (4), the bottom surface of the screw jack (4) is connected with the erected steel girder (11), and the top surface of the screw jack is connected with the bottom of the crane support (2).
3. The cable-stayed bridge frame beam crane of claim 2, characterized in that: the screw jacks (4) comprise a first screw jack group (4A) and a second screw jack group (4B), and the first screw jack group (4A) and the second screw jack group (4B) are respectively positioned on two sides of the walkway beam (1).
4. The cable-stayed bridge frame beam crane of claim 1, characterized in that: the girder erection crane further comprises a clamping plate (5), and the clamping plate (5) is used for connecting the walkway girder (1) and the erected steel girder (11).
5. The cable-stayed bridge frame beam crane of claim 1, characterized in that: the length of the crane bracket (2) is less than that of the first steel rail.
6. The cable-stayed bridge frame beam crane of claim 1, characterized in that: and the first steel rail is attached with an anti-skid plate, and the anti-skid plate is used for increasing the friction force between the first steel rail and the crane bracket (2).
7. The cable-stayed bridge frame beam crane of claim 1, characterized in that: the frame beam crane further comprises a rear anchor device (6), and the rear anchor device (6) is used for connecting the crane bracket (2) and the erected steel beam (11).
8. The cable-stayed bridge frame beam crane of claim 7, characterized in that: the rear anchor device (6) comprises a longitudinal push-pull rod (6A), one end of the longitudinal push-pull rod (6A) is connected with the crane support (2), and the other end of the longitudinal push-pull rod is used for pushing and pulling the crane support (2).
9. A construction method of a cable-stayed bridge girder is characterized by comprising the following steps:
erecting a walkway beam (1) on a first erected steel beam (11A), wherein a first steel rail is arranged on the walkway beam (1);
erecting a crane bracket (2) provided with a second steel rail on the first steel rail, wherein the crane bracket (2) is connected with a first erected steel beam (11A) through a rear anchor device (6);
a universal traveling wheel is mounted at the bottom of the intelligent crown block system (3) and slides on the second steel rail through the universal traveling wheel, and a rotary lifting appliance (3A) is mounted on the intelligent crown block system (3);
the steel beam (7) to be erected is conveyed to a point to be erected, the intelligent crane system (3) lifts the steel beam (7) to be erected through a rotary lifting appliance (3A), and the steel beam (7) to be erected and the first erected steel beam (11A) are assembled, so that the steel beam (7) to be erected becomes a second erected steel beam (11B);
placing a screw jack (4) on the first erected steel beam (11A), jacking the crane bracket (2) by using the screw jack (4), separating the crane bracket (2) from the walkway beam (1), and moving the walkway beam (1) to the second erected steel beam (11B);
and removing the screw jack (4), and pulling the longitudinal push-pull rod (6A) to enable the rear anchor device (6), the crane bracket (2) and the intelligent crown block system (3) to travel to the walkway beam (1) on the second erected steel beam (11B) together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911252775.7A CN110904861A (en) | 2019-12-09 | 2019-12-09 | Cable-stayed bridge girder erection crane and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911252775.7A CN110904861A (en) | 2019-12-09 | 2019-12-09 | Cable-stayed bridge girder erection crane and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110904861A true CN110904861A (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911252775.7A Pending CN110904861A (en) | 2019-12-09 | 2019-12-09 | Cable-stayed bridge girder erection crane and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356082A (en) * | 2021-07-16 | 2021-09-07 | 中国十九冶集团有限公司 | Method for dismantling steel cofferdam for bridge construction water retaining |
| CN114541265A (en) * | 2022-03-04 | 2022-05-27 | 中铁长安重工有限公司 | Installation equipment and method for bridge single-column pier steel cap beam |
-
2019
- 2019-12-09 CN CN201911252775.7A patent/CN110904861A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356082A (en) * | 2021-07-16 | 2021-09-07 | 中国十九冶集团有限公司 | Method for dismantling steel cofferdam for bridge construction water retaining |
| CN114541265A (en) * | 2022-03-04 | 2022-05-27 | 中铁长安重工有限公司 | Installation equipment and method for bridge single-column pier steel cap beam |
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