CN117536139A - Tool and installation method for cable replacement of stay cable in operation period of large-span cable-stayed bridge - Google Patents
Tool and installation method for cable replacement of stay cable in operation period of large-span cable-stayed bridge Download PDFInfo
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- CN117536139A CN117536139A CN202311518359.3A CN202311518359A CN117536139A CN 117536139 A CN117536139 A CN 117536139A CN 202311518359 A CN202311518359 A CN 202311518359A CN 117536139 A CN117536139 A CN 117536139A
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- tower
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- 238000009434 installation Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Classifications
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of cable replacement of stay cables in the operation period of a cable-stayed bridge, and particularly discloses a tool and an installation method for cable replacement of stay cables in the operation period of a large-span cable-stayed bridge; the cable changing winch is arranged on the cable tower and comprises a dumping device arranged on the parapet wall of the cable tower, a cable changing winch which is matched with the dumping device and is used for lifting the cable changing winch to the tower top through the dumping device, and a hoisting point component which is arranged on the dumping device in a sliding manner and moves along the longitudinal bridge direction; the transfer device comprises a longitudinal beam component which is arranged on the parapet wall along the longitudinal bridge direction and a bridge deck lifting mechanism which is matched with the hanging point for use and is arranged on the bridge deck. The invention reduces the hoisting risk and the installation time, and improves the efficiency of cable replacement; the technical problems of hanging the stay cable rope tower end in the operation period and installing the tower end equipment are solved, and the cable replacement time in the operation period and traffic interference are reduced.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a tool and an installation method for cable replacement of stay cables in the operation period of a large-span cable-stayed bridge.
Background
With the economic development of China, the construction of large-span cable-stayed bridges is more and more.
The stay cable is one of the main stress members of the cable-stayed bridge; the stay cable of the cable-stayed bridge is subjected to the actions of sunshine and the like in the operation period, so that the stay cable protective layer is cracked, the sheath is aged, the steel wires are severely corroded, the anchorage is corroded and the like, and even the stay cable is broken; part of the inhaul cables can be damaged due to accidents such as fire, impact and the like, and the normal use and the safe service of the cable-stayed bridge are seriously affected, so that the inhaul cables are required to be replaced.
The stay cable force of the large-span cable-stayed bridge is large, compared with the construction period of the stay cable, because equipment such as a large-scale tower crane and the like are not available, the installation technical difficulty of traction equipment, tensioning tools and tower end hanging equipment in the cable-stayed tower is large, the installation period is long, and the existing traffic interference time is long.
Disclosure of Invention
The invention aims to solve the technical problem of providing a tool and an installation method for cable replacement of stay cables in the operation period of a large-span cable-stayed bridge;
the invention solves the technical problems by adopting the following solution:
the tool for replacing the stay ropes of the long-span cable-stayed bridge in the operation period is arranged on a cable tower and comprises a dumping device arranged on a parapet wall of the cable tower, a rope replacing winch which is matched with the dumping device and is used for lifting the cable replacing winch to the top of the tower through the dumping device, and a hoisting point component which is slidably arranged on the dumping device and moves along the longitudinal bridge direction; the cable-changing winch is arranged on the bridge deck;
the transfer device comprises a longitudinal beam component which is arranged on the parapet wall along the longitudinal bridge direction and a bridge deck lifting mechanism which is matched with the hanging point for use and is arranged on the bridge deck.
In some of the possible embodiments of the present invention,
the longitudinal beam assembly comprises two groups of longitudinal beams which are arranged in parallel and along the longitudinal bridge direction, and a connecting assembly for connecting the longitudinal beams and the cable towers;
the lifting point component is in sliding fit with the two groups of longitudinal beams; and a longitudinal pushing device for controlling the movement of the lifting point assembly is arranged on each group of longitudinal beams.
In some of the possible embodiments of the present invention,
the hoisting point assembly comprises a cross beam which is slidably arranged on the longitudinal beam assembly, and a pulley hanging assembly which is arranged on the cross beam and is arranged vertically.
In some of the possible embodiments of the present invention,
the bridge deck lifting mechanism comprises a bridge deck lifting device arranged on a bridge deck, a door-type hanging frame which is slidably arranged on the longitudinal beam assembly and matched with the longitudinal pushing device, and a hanging point arranged on the door-type hanging frame.
In some of the possible embodiments of the present invention,
the two groups of the cross beams are positioned at two sides of the cable tower, and the two groups of the door-type hanging frames and the longitudinal pushing devices are arranged in a one-to-one correspondence manner with the cross beams; the bridge deck lifting mechanism is arranged on the door type hanging frame, and the door type hanging frame is arranged on one side of the longitudinal pushing device away from the cross beam.
In some of the possible embodiments of the present invention,
the connecting assembly comprises a diagonal brace used for connecting the longitudinal beam with the outer side face of the cable tower and a supporting leg used for connecting the bottom of the longitudinal beam with core concrete in the cable tower.
In some of the possible embodiments of the present invention,
and a plug pad which is arranged corresponding to the parapet wall is arranged at the bottom of the longitudinal beam.
The installation method for the stay cable replacement worker in the operation period of the large-span cable-stayed bridge based on the above method specifically comprises the following steps:
s1, installing parts of a transfer device except for diagonal braces;
step S2, lifting and installing a bridge deck lifting device;
and S3, installing diagonal braces and hanging point components to finish the installation.
In some of the possible embodiments of the present invention,
the step S1 specifically comprises the following steps:
step S11: lifting a longitudinal beam assembly, a longitudinal pushing device, a lifting point assembly and a cable changing winch stored in a tower to a bridge deck;
and S12, installing a longitudinal beam assembly and a bridge deck winch.
In some of the possible embodiments of the present invention,
the step S2 specifically includes the following steps:
s21, taking a bridge deck winch as a lifting mechanism and lifting the rope changing winch from the ground to the bridge deck by matching with a door type hanger;
and S22, controlling the door-type hanger to move along the longitudinal bridge direction through the longitudinal pushing device until reaching a designated position, and installing the cable-changing winding machine on the bridge deck to finish installation.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, all parts of the dumping device stored in the cable tower are transported through the bridge deck lifting device, and the elevator related to the cable tower can be adopted for dumping the door-type hanging frame and the longitudinal pushing device; the hoisting risk and the installation time are reduced, and the cable replacing efficiency is improved; the technical problems of hanging the stay cable rope tower end in the operation period and installing the tower end equipment are solved, and the cable replacement time in the operation period and traffic interference are reduced.
Drawings
FIG. 1 is a schematic view of the assembled structure of the present invention;
FIG. 2 is a schematic view of the structure of the diagonal brace, longitudinal beam, door hanger and longitudinal pushing device of the present invention
FIG. 3 is a schematic view of a construction of the present invention for realizing the lift of a rope changing and winding machine by the cooperation of a front lifting device and a door type hanger;
FIG. 4 is a schematic view of the structure of a stringer and rope change winder of the present invention;
wherein: the cable lifting device comprises a 1-cable tower, 2-core concrete, 3-supporting legs, 4-longitudinal beams, 5-diagonal braces, 6-lifting point components, 61-cross beams, 62-pulley hanging components, 7-longitudinal thrusters, 8-plug pads, 9-cable replacement winding and lifting machines, 10-door type hanging frames and 101-lifting points.
Detailed Description
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Reference to "first," "second," and similar terms in this application does not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. In the implementation of the present application, "and/or" describes an association relationship of an association object, which means that there may be three relationships, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more. For example, a plurality of positioning posts refers to two or more positioning posts. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in detail below.
As shown in fig. 1-4:
the tool for cable replacement of stay cables of a long-span cable-stayed bridge in the operation period is arranged on a cable tower 1 and comprises a dumping device arranged on a parapet wall of the cable tower 1, a cable replacement winch 9 which is matched with the dumping device and is used for lifting the cable replacement winch to the top of the tower through the dumping device, and a lifting point component 6 which is slidably arranged on the dumping device and moves along the longitudinal bridge direction; the cable-changing winch 9 is arranged on the bridge deck;
the transfer device comprises a longitudinal beam 4 assembly which is arranged on a parapet wall along the longitudinal bridge direction and a bridge deck lifting mechanism which is matched with the lifting point 101 for use and is arranged on the bridge deck.
According to the invention, the transporting device is stored in the cable tower 1, so that the tower top hoisting risk and the installation time are reduced; when in use, the transferring device is arranged on the parapet wall at the top of the tower, the bridge deck of the cable changing winch 9 is lifted by the transferring device, and the cable changing is realized by the cooperation of the transferring device; compared with the technology, the hoisting risk and the installation time are reduced, so that quick and efficient cable replacement is realized.
In some of the possible embodiments of the present invention,
the longitudinal beam 4 assembly comprises two groups of longitudinal beams 4 which are arranged in parallel and along the longitudinal bridge direction, and a connecting assembly for connecting the longitudinal beams 4 and the cable tower 1;
the two groups of longitudinal beams 4 are arranged on the parapet wall and are arranged along the longitudinal bridge direction, and are connected with the cable tower 1 through a connecting component to form a whole;
the lifting point assembly 6 is in sliding fit with the two groups of longitudinal beams 4; longitudinal thrusters 7 for controlling the movement of the lifting point assemblies 6 are provided on each set of stringers 4.
In some of the possible embodiments of the present invention,
the connecting assembly comprises inclined struts 5 used for connecting the longitudinal beam 4 with the outer side face of the cable tower 1 and supporting legs 3 used for connecting the bottom of the longitudinal beam 4 with core concrete 2 in the cable tower 1.
The bottom of the longitudinal beam 4 is provided with a chock 8 corresponding to the parapet wall.
The height of the supporting leg 3 is identical to that of the parapet wall arranged on the top of the cable tower 1, the top surfaces of the supporting leg 3 and the parapet wall are on the same plane, and the bottom of the longitudinal beam 4 is arranged on the top surface of the supporting leg 3 and is supported on the parapet wall through the plug pad 8;
the diagonal bracing 5 is supported between the cantilever end of the longitudinal beam 4 and the cable tower 1, so that the rigidity of the longitudinal beam 4 is effectively improved.
In some of the possible embodiments of the present invention,
the suspension point assembly 6 comprises a cross beam 61 slidably mounted on the longitudinal beam 4 assembly, and a pulley suspension assembly 62 mounted on the cross beam 61 and arranged vertically.
The crossbeam 61 is installed on the longeron 4 top surface, sets up pulley hanging component 62 on the crossbeam 61 for the one end of stay cable is connected.
In some of the possible embodiments of the present invention,
the bridge deck lifting mechanism comprises a bridge deck lifting device arranged on a bridge deck, a door-type hanging frame 10 which is slidably arranged on the longitudinal beam 4 assembly and matched with the longitudinal pushing device 7 for use, and a hanging point 101 arranged on the door-type hanging frame 10.
The door type hanging frame 10 is arranged on the longitudinal beam 4, and the longitudinal pushing device 7 is used for controlling the door type hanging frame 10 to move along the length direction of the longitudinal beam 4 and transferring the cable type hanging frame 9 to a designated position in the lifting process of the cable type changing winch 9;
during cable replacement, the longitudinal pushing device 7 is connected with the cross beam 61 to drive the cross beam 61 to move along the longitudinal bridge, and at the moment, the longitudinal pushing device 7 effectively realizes the movement of the hoisting point assembly 6 along the longitudinal bridge, assists in traction of the stay cable and avoids the inclined hoisting of the stay cable in the traction process in the tower.
The longitudinal beam 4 adopts an assembled sectional design, so that the rapid installation in the tower during storage and operation is facilitated; the rope changing and winding machine 9 provides power for hanging the stay rope on the rope changing device.
In some of the possible embodiments of the present invention,
the two groups of cross beams 61 are positioned at two sides of the cable tower 1, and the two groups of door-type hanging frames 10 and the two groups of longitudinal pushing devices 7 are arranged in one-to-one correspondence with the cross beams 61; the door type hanging frame 10 is provided with hanging points matched with a bridge deck lifting mechanism, and the door type hanging frame 10 is arranged on one side of the longitudinal pushing device 7 away from the cross beam 61.
The bottom of the door type hanging frame 10 is provided with a triangular support, and the stability of the door type hanging frame 10 in the moving process along the longitudinal bridge direction is improved through the triangular support;
the installation method for the stay cable replacement worker in the operation period of the large-span cable-stayed bridge based on the above method specifically comprises the following steps:
s1, installing parts of the transfer device except for the diagonal braces 5;
the step S1 specifically comprises the following steps:
step S11: lifting a longitudinal beam 4 assembly, a longitudinal pushing device 7, a lifting point assembly 6 and a rope changing and winding machine 9 which are stored in a tower to a bridge deck;
step S12, installing a longitudinal beam 4 assembly and a bridge deck winch;
step S2, lifting and installing a bridge deck lifting device;
the step S2 specifically includes the following steps:
s21, taking a bridge deck winch as a lifting mechanism, and lifting the rope changing winch 9 from the ground to the bridge deck by matching with the door type hanging frame 10, wherein the bridge deck winch can also lift a tensioning tool positioned in the tower;
the steel wire rope of the bridge deck winch passes through a hanging point 101 arranged on a door type hanging frame 10 and then is connected with a rope changing winch 9 on the ground, so that the steel wire rope is lifted to the bridge deck;
s22, controlling the door-type hanger 10 to move along the longitudinal bridge direction through the longitudinal pushing device 7 until reaching a designated position, and installing the rope changing and winding machine 9 on the bridge deck;
s3, installing the diagonal brace 5 and the hanging point assembly 6, and finishing the installation; the diagonal bracing 5 and the hoisting point assembly 6 are installed after the rope changing winch 9 is lifted to the bridge deck, so that the influence of the diagonal bracing 5 and the hoisting point assembly 6 on the lifting of the rope changing winch 9 is effectively avoided;
the pulley hanging point assembly in the hanging point assembly 6 is connected with one end of the stay cable to lift the stay cable.
After the installation, the door type hanging frame 10 is dismantled, the longitudinal pushing device 7 is connected with the cross beam 61, and the cable replacement winch 9, the lifting mechanism, the pulley hanging point assembly and the tensioning tool are used for achieving cable replacement.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (10)
1. The tool for replacing the stay cable of the long-span cable-stayed bridge in the operation period is arranged on a cable tower and is characterized by comprising a dumping device arranged on a parapet wall of the cable tower, a cable replacing winch which is matched with the dumping device and is used for lifting the cable replacing winch to the tower top through the dumping device, and a hoisting point component which is slidably arranged on the dumping device and moves along the longitudinal bridge direction;
the transfer device comprises a longitudinal beam component which is arranged on the parapet wall along the longitudinal bridge direction and a bridge deck lifting mechanism which is matched with the hanging point for use and is arranged on the bridge deck.
2. The tooling for cable replacement of a stay cable of a long-span cable-stayed bridge in operation period according to claim 1, wherein the longitudinal beam assembly comprises two groups of longitudinal beams which are arranged in parallel and along a longitudinal bridge direction, and a connecting assembly for connecting the longitudinal beams and a cable tower;
the lifting point component is in sliding fit with the two groups of longitudinal beams; and a longitudinal pushing device for controlling the movement of the lifting point assembly is arranged on each group of longitudinal beams.
3. The tooling for cable replacement of a stay cable of a long-span cable-stayed bridge in operation period according to claim 2, wherein the suspension point assembly comprises a cross beam which is slidably arranged on the longitudinal beam assembly, and a pulley suspension assembly which is arranged on the cross beam and is arranged vertically.
4. The tooling for cable replacement of a stay cable of a long-span cable-stayed bridge in operation according to claim 2, wherein the deck lifting mechanism comprises a deck lifting device mounted on a deck, a door-type hanger slidably mounted on a longitudinal beam assembly and used with a longitudinal pushing device, and a hanging point arranged on the door-type hanger.
5. The tooling for cable replacement of stay cables of a large-span cable-stayed bridge in the operation period of the large-span cable-stayed bridge according to claim 4, wherein the number of the cross beams is two, the cross beams are positioned on two sides of a cable tower, and the door type hanging frame and the longitudinal pushing device are respectively two and are arranged in one-to-one correspondence with the cross beams; the bridge deck lifting mechanism is arranged on the door type hanging frame, and the door type hanging frame is arranged on one side of the longitudinal pushing device away from the cross beam.
6. A tooling for cable replacement for a stayed cable of a long-span cable-stayed bridge in operation period according to any one of claims 2 to 5, wherein the connecting component comprises a diagonal brace for connecting the longitudinal beam and the outer side surface of the cable tower and a supporting leg for connecting the bottom of the longitudinal beam and core concrete in the cable tower.
7. The tooling for cable replacement of stay cables of a large-span cable-stayed bridge in operation period of claim 6, wherein plug pads corresponding to parapet walls are arranged at the bottoms of the longitudinal beams.
8. A method for installing a tooling for cable replacement of stay cables of a long-span cable-stayed bridge in an operation period based on the method as claimed in claim 6 or 7, which is characterized by comprising the following steps:
s1, installing parts of a transfer device except for diagonal braces;
step S2, lifting and installing a bridge deck lifting device;
and S3, installing diagonal braces and hanging point components to finish the installation.
9. The method for installing the tool for cable replacement of the stay cable of the long-span cable-stayed bridge in operation period according to claim 8, wherein the step S1 specifically comprises the following steps:
step S11: lifting a longitudinal beam assembly, a longitudinal pushing device, a lifting point assembly and a cable changing winch stored in a tower to a bridge deck;
and S12, installing a longitudinal beam assembly and a bridge deck winch.
10. The method for installing the stay cable replacement tooling for the long-span cable-stayed bridge operation period according to claim 9, wherein,
the step S2 specifically includes the following steps:
s21, taking a bridge deck winch as a lifting mechanism and lifting the rope changing winch from the ground to the bridge deck by matching with a door type hanger;
and S22, controlling the door-type hanger to move along the longitudinal bridge direction through the longitudinal pushing device until reaching a designated position, and installing the cable-changing winding machine on the bridge deck to finish installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311518359.3A CN117536139A (en) | 2023-11-13 | 2023-11-13 | Tool and installation method for cable replacement of stay cable in operation period of large-span cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311518359.3A CN117536139A (en) | 2023-11-13 | 2023-11-13 | Tool and installation method for cable replacement of stay cable in operation period of large-span cable-stayed bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117536139A true CN117536139A (en) | 2024-02-09 |
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ID=89785499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311518359.3A Pending CN117536139A (en) | 2023-11-13 | 2023-11-13 | Tool and installation method for cable replacement of stay cable in operation period of large-span cable-stayed bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117536139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117904979A (en) * | 2024-03-20 | 2024-04-19 | 四川公路桥梁建设集团有限公司 | Cable-stayed bridge cable high-altitude suspension conveying device |
-
2023
- 2023-11-13 CN CN202311518359.3A patent/CN117536139A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117904979A (en) * | 2024-03-20 | 2024-04-19 | 四川公路桥梁建设集团有限公司 | Cable-stayed bridge cable high-altitude suspension conveying device |
| CN117904979B (en) * | 2024-03-20 | 2024-06-11 | 四川公路桥梁建设集团有限公司 | Cable-stayed bridge cable high-altitude suspension conveying device |
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