CN114108502A - Construction method for synchronously dismantling multiple transverse overbridges of suspension bridge catwalk - Google Patents
Construction method for synchronously dismantling multiple transverse overbridges of suspension bridge catwalk Download PDFInfo
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- CN114108502A CN114108502A CN202111355870.7A CN202111355870A CN114108502A CN 114108502 A CN114108502 A CN 114108502A CN 202111355870 A CN202111355870 A CN 202111355870A CN 114108502 A CN114108502 A CN 114108502A
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- hoisting
- transverse channel
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- channel
- catwalk
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000000725 suspension Substances 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 230000001360 synchronised effect Effects 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
Abstract
The application discloses a multi-channel transverse overpass synchronous dismantling construction method for a suspension bridge catwalk, which comprises the following steps of S1, hoisting a first transverse channel and a second transverse channel which are adjacent, hoisting the first transverse channel through hoisting equipment, hoisting and matching two side hoisting mechanisms and a middle hoisting mechanism in the hoisting equipment with the first transverse channel, and after dismantling the connection between the first transverse channel and the catwalk, driving the first transverse channel to move towards one side of a main tower through the hoisting equipment; s2, after moving for a certain distance, disconnecting the side hoisting mechanism from the first transverse channel, and driving the middle hoisting mechanism to rotate through a driving assembly in the hoisting equipment, so that the first transverse channel rotates in the horizontal plane until the two ends of the first transverse channel are both positioned at the inner sides of the two catwalks; and S3, driving the first transverse channel to move upwards through the middle hoisting mechanism. This application has promoted the effect to the hoist and mount efficiency of the cross passage who demolishs.
Description
Technical Field
The invention relates to the field of dismantling transverse passages of a suspension bridge catwalk, in particular to a synchronous dismantling construction method for a plurality of transverse overbridges of the suspension bridge catwalk.
Background
At present, in the suspension bridge construction process, a catwalk is usually arranged below the center line of a main cable corresponding to the left and right sides, and the catwalk is in a three-span continuous form and is in linear arrangement parallel to the main cable. For the convenience of constructors to pass between the two catwalks, a plurality of transverse channels are arranged between the two catwalks at intervals.
After the cable clamps and the slings are installed, the catwalk needs to be changed into a crane before the steel beams are hoisted, and the changed and hoisted catwalk is hung on the main cable. After the catwalk is changed to hang, the transverse channel also needs to be dismantled.
In the correlation technique, when dismantling the cross aisle, need to demolish through two overhead traveling cranes 1 that slide respectively and erect on two sets of portal bearing cables of two catwalks tops, overhead traveling crane 1 is last to be equipped with two hoist cables 11 that are used for hoisting the cross aisle respectively in the both ends of catwalk, and cooperate on the cross aisle to hoist through hoisting hoist cable 11.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: in the hoisting process, the transverse channels can be hoisted one by one only through the hoisting mode, one transverse channel is hoisted and moved to the side of the main bridge and is transferred, then the next transverse channel is returned to be hoisted, the construction period is long, and the construction efficiency is to be improved.
Disclosure of Invention
In order to improve the hoisting efficiency of the dismantled transverse channel, the application provides a construction method for synchronously dismantling a plurality of transverse overbridges of a catwalk of a suspension bridge.
The application provides a construction method for synchronously dismantling a plurality of transverse overpasses of a suspension bridge catwalk, which adopts the following technical scheme:
a construction method for synchronously dismantling a plurality of transverse overbridges of a suspension bridge catwalk comprises the following steps:
s1, hoisting a first transverse channel and a second transverse channel which are adjacent to each other, hoisting the first transverse channel through hoisting equipment, hoisting and matching two side hoisting mechanisms and a middle hoisting mechanism in the hoisting equipment with the first transverse channel, and driving the first transverse channel to move towards one side of the main tower through the hoisting equipment after the connection between the first transverse channel and the catwalk is removed;
s2, after moving for a certain distance, disconnecting the side hoisting mechanism from the first transverse channel, and driving the middle hoisting mechanism to rotate through a driving assembly in the hoisting equipment, so that the first transverse channel rotates in the horizontal plane until the two ends of the first transverse channel are both positioned at the inner sides of the two catwalks;
s3, driving the first transverse channel to move upwards through the middle hoisting mechanism until the first transverse channel can pass through the upper part of the second transverse channel;
s4, the hoisting equipment continues to drive the first transverse channel to move towards one side of the main tower until the hoisting equipment moves to the position right above the second transverse channel, the lateral hoisting mechanism is in hoisting fit with the second transverse channel, after the connection between the second transverse channel and the catwalk is removed, the hoisting equipment drives the second transverse channel and the first transverse channel to move towards one side of the main tower;
s5, hoisting the two transverse channels to the side of the main tower by using hoisting equipment and lowering the two transverse channels;
and the two lateral hoisting mechanisms are respectively positioned right above the two catwalks, and the middle hoisting mechanism is positioned between the two lateral hoisting mechanisms.
Through adopting above-mentioned technical scheme, earlier with first transverse channel hoist and mount, turned angle and promotion, remove again and hoist another transverse channel to second transverse channel top, realized under the condition that the single came and returned, to the hoist and mount of first transverse channel and second transverse channel, reduced to wait to demolish under the same condition of transverse channel quantity, lifting device's the number of times that comes and returns, promoted the hoist and mount efficiency to the transverse channel who demolishs, shortened construction period, promoted the efficiency of construction.
Preferably, in step S1, before hoisting the adjacent first transverse channel and second transverse channel in a single pass, the side rail on the transverse channel is removed.
By adopting the technical scheme, the height of the first transverse channel required to move upwards is reduced by reducing the height of the transverse channel.
Preferably, in step S2, the first transverse channel is rotated by 90 degrees under the action of the hoisting mechanism.
Through adopting above-mentioned technical scheme, first transverse channel rotates 90 degrees back perpendicular with second transverse channel, compares in first transverse channel and rotates to other angles, and the equilibrium degree is better, and stability is higher.
Preferably, the hoisting equipment comprises a supporting truss fixedly arranged between the two side hoisting mechanisms, the driving assembly is fixedly arranged on the supporting truss, and the middle hoisting mechanism is arranged at the output end of the driving assembly.
By adopting the technical scheme, when the first transverse channel needs to be driven to rotate, the driving piece is started, the lifting assembly drives the first transverse channel to rotate under the action of the driving assembly, and the angle of the first transverse channel in the horizontal plane is adjusted.
Preferably, drive assembly's output is provided with the lifting subassembly, the lifting subassembly is including setting firmly in the connection truss of drive assembly's output and setting firmly in the linear driving piece of connecting the truss, the vertical setting of linear driving piece, linear driving piece is provided with two in the both ends along first transverse channel, linear driving piece's output and middle part hoisting machine construct articulatedly.
Through adopting above-mentioned technical scheme, because portal bearing cable has certain radian, first transverse passage is after rotating certain angle, hardly keep both ends to be located the state of same horizontal plane, when the difference in height at first transverse passage both ends is great, constructor adjusts two linear driving piece respectively, and then adjusts the height at first transverse passage both ends, reduces the difference in height at first transverse passage both ends, increases first transverse passage and removes equilibrium and the stability along portal bearing cable removal in-process along hoisting equipment.
Preferably, the top end of the connecting truss is fixedly provided with a connecting rod, the supporting truss is provided with a sliding groove, and the connecting rod penetrates through the sliding groove and is in sliding fit with the sliding groove.
By adopting the technical scheme, the sliding fit between the connecting truss and the supporting truss is realized, and the stability of connection between the connecting truss and the supporting truss is improved.
Preferably, the top end of the connecting rod is bent outwards to form an extension rod, and the extension rod abuts against the upper surface of the supporting truss.
By adopting the technical scheme, the lifting assembly and the middle hoisting assembly are further supported, and the stability of the middle hoisting assembly is improved.
Preferably, the first transverse channel is located on a side away from the main tower, and the second transverse channel is located on a side close to the main tower.
By adopting the technical scheme, during hoisting, the hoisting equipment is moved to the upper part of the first transverse channel, and then the first transverse channel and the second transverse channel are sequentially hoisted towards the main tower, so that the hoisting sequence is reasonable, and the hoisting efficiency is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the first transverse channel and the second transverse channel are hoisted under the condition of single reciprocating, the reciprocating times of hoisting equipment under the condition that the number of the transverse channels to be dismantled is the same are reduced, the hoisting efficiency of the dismantled transverse channels is improved, the construction period is shortened, and the construction efficiency is improved;
2. first transverse channel rotates 90 degrees back and is perpendicular with second transverse channel, compares in first transverse channel and rotates to other angles, and the equilibrium degree is better, and stability is higher.
Drawings
Fig. 1 is a schematic view showing a hoisting manner of a transverse passage in the background art.
Fig. 2 is a schematic structural diagram showing a hoisting state when the hoisting device hoists the first transverse passage.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Fig. 4 is a schematic structural diagram showing a hoisting state when the hoisting device hoists the first transverse passage and the second transverse passage.
Fig. 5 is a partially enlarged schematic view of a portion B in fig. 4.
Description of reference numerals:
1. a crown block; 11. a sling; 21. a first transverse channel; 22. a second transverse channel; 3. a lateral hoisting mechanism; 31. hoisting a crown block; 32. a lateral sling group; 4. a lattice support; 41. a drive assembly; 42. a lifting assembly; 421. connecting a truss; 422. a linear drive; 43. a side truss; 431. a chute; 5. a middle hoisting mechanism; 51. hoisting a truss; 52. a middle part sling group; 6. a connecting rod; 61. an extension rod; 7. a catwalk; 8. portal bearing cable.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a construction method for synchronously dismantling a plurality of transverse overbridges of a suspension bridge catwalk.
Referring to fig. 2, a construction method for synchronously dismantling a plurality of transverse overbridges of a catwalk of a suspension bridge is used for hoisting two adjacent transverse channels through hoisting equipment under the condition of single round trip.
Wherein, the transverse channel at the side far away from the main tower is a first transverse channel 21, and the transverse channel at the side near the main tower is a second transverse channel 22.
The hoisting equipment comprises two side hoisting mechanisms 3, a supporting truss 4 arranged between the two side hoisting mechanisms 3 and a middle hoisting mechanism 5 arranged on the supporting truss 4.
The two lateral hoisting mechanisms 3 are respectively positioned right above the two catwalks 7, each lateral hoisting mechanism 3 comprises a hoisting crown block 31 in sliding fit on the portal bearing cable 8 and two sets of lateral hoisting rope sets 32 arranged on the hoisting crown block 31, and the two sets of lateral hoisting rope sets 32 are respectively positioned on two sides of the catwalk 7 and are used for being in hoisting fit with the transverse passage. In this embodiment, the lateral hoisting rope group 32 is connected to the hoisting crown block 31 through a chain block or an electric block.
The supporting truss 4 is welded and fixed between the two hoisting crown blocks 31, and the supporting truss 4 extends along the distribution direction of the two hoisting crown blocks 31.
A driving assembly 41 is fixed in the middle of the lower surface of the supporting truss 4, the driving assembly 41 is vertically arranged, and in this embodiment, the driving assembly 41 is arranged as a motor.
The output end of the driving assembly 41 is fixedly provided with a lifting assembly 42, the lifting assembly 42 comprises a connection truss 421 welded and fixed to the output end of the motor and two linear driving members 422 fixed to two ends of the connection truss 421, the linear driving members 422 are vertically arranged, and in this embodiment, the linear driving members 422 are arranged to be electric cylinders.
With reference to fig. 2 and 3, the top end of the connecting truss 421 is welded and fixed with the connecting rod 6, the connecting rod 6 is vertically arranged, and two connecting rods 6 are symmetrically arranged on two sides of the driving assembly 41. The two sides of the supporting truss 4 are respectively integrally formed with a side truss 43, the side truss 43 and the supporting truss 4 are provided with a sliding groove 431 corresponding to the connecting rod 6, the sliding groove 431 is a through groove penetrating through the thickness direction of the side truss 43, and the connecting rod 6 penetrates through the sliding groove 431 and is in sliding fit with the sliding groove 431. The top end of the connecting rod 6 is bent outwards to form an extension rod 61, and the extension rod 61 is abutted against the upper surface of the supporting truss 4.
With reference to fig. 4 and 5, the middle hoisting mechanism 5 includes a hoisting truss 51, the hoisting truss 51 is disposed along the length direction of the connection truss 421, the output end of the linear driving member 422 is hinged to the upper surface of the hoisting truss 51, and the hinge shaft between the linear driving member 422 and the hoisting truss 51 is disposed along the width direction of the hoisting truss 51.
Two sides of the hoisting truss 51 are respectively connected with a middle hoisting rope group 52 through an electric hoist, and the middle hoisting rope group 52 is used for being hoisted and matched with the transverse channel.
A construction method for synchronously dismantling a plurality of transverse overpasses of a suspension bridge catwalk comprises the following steps with reference to figures 1 to 5:
s1, dragging the hoisting equipment by a winch on a cable saddle hanger positioned at the top of the main tower, and enabling the hoisting equipment to move to the position right above the first transverse channel 21 along the gantry bearing cable 8;
s2, hoisting the adjacent first transverse channel 21 and second transverse channel 22, hoisting and matching the side hoisting rope group 32 in the side hoisting mechanism 3 with the first transverse channel 21, hoisting and matching the middle hoisting rope group 52 in the middle hoisting mechanism 5 with the first transverse channel 21, and driving the first transverse channel 21 to move towards one side of the main tower after hoisting is completed and the connection between the first transverse channel 21 and the catwalk 7 is removed;
s3, when the first transverse channel 21 moves to be close to the second transverse channel 22 and the distance between the first transverse channel 21 and the second transverse channel 22 is larger than the length of the transverse channel, the connection between the side sling group 32 in the side hoisting mechanism 3 and the first transverse channel 21 is disconnected, the driving assembly 41 is started to drive the lifting assembly 42 and the first transverse channel 21 to rotate, and the first transverse channel 21 rotates 90 degrees in the horizontal plane;
s4, driving the first transverse channel 21 to move upwards through the middle hoisting rope group 52 in the middle hoisting mechanism 5 until the first transverse channel 21 can pass above the second transverse channel 22;
s5, the hoisting equipment continues to drive the first transverse channel 21 to move towards one side of the main tower until the hoisting equipment moves to the position right above the second transverse channel 22, the side hoisting rope group 32 in the side hoisting mechanism 3 is hoisted and matched with the second transverse channel 22, and after the hoisting is finished and the connection between the second transverse channel 22 and the catwalk 7 is removed, the second transverse channel 22 and the first transverse channel 21 are driven to move towards one side of the main tower;
in the moving process, when the height difference between the two ends of the first transverse channel 21 is large, the two linear driving parts 422 are respectively adjusted, so that the heights of the two ends of the first transverse channel 21 are adjusted, the height difference between the two ends of the first transverse channel 21 is reduced, and the balance and the stability of the first transverse channel 21 are improved;
and S6, hoisting the first transverse channel 21 and the second transverse channel 22 to the side of the main tower by using the hoisting equipment and lowering.
The embodiment of the application discloses construction method for synchronously dismantling multiple transverse overpasses of suspension bridge catwalk, which realizes the hoisting of a first transverse channel 21 and a second transverse channel 22 under the condition of single round trip, reduces the round trip times of hoisting equipment under the condition that the number of the transverse channels to be dismantled is the same, improves the hoisting efficiency of the dismantled transverse channels, shortens the construction period and improves the construction efficiency.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A construction method for synchronously dismantling a plurality of transverse overbridges of a suspension bridge catwalk is characterized by comprising the following steps:
s1, hoisting a first transverse channel (21) and a second transverse channel (22) which are adjacent to each other, hoisting the first transverse channel (21) through hoisting equipment, hoisting and matching two side hoisting mechanisms (3) and a middle hoisting mechanism (5) in the hoisting equipment with the first transverse channel (21), and after the connection between the first transverse channel (21) and the catwalk (7) is removed, driving the first transverse channel (21) to move towards one side of the main tower through the hoisting equipment;
s2, after moving for a certain distance, disconnecting the side hoisting mechanism (3) from the first transverse channel (21), and driving the middle hoisting mechanism (5) to rotate through a driving component (41) in the hoisting equipment, so that the first transverse channel (21) rotates in the horizontal plane until the two ends of the first transverse channel (21) are positioned at the inner sides of the two catwalks (7);
s3, driving the first transverse channel (21) to move upwards through the middle hoisting mechanism (5) until the first transverse channel (21) can pass through the upper part of the second transverse channel (22);
s4, the hoisting equipment continues to drive the first transverse channel (21) to move towards one side of the main tower until the hoisting equipment moves to the position right above the second transverse channel (22), the lateral hoisting mechanism (3) is in hoisting fit with the second transverse channel (22), and after the connection between the second transverse channel (22) and the catwalk (7) is removed, the hoisting equipment drives the second transverse channel (22) and the first transverse channel (21) to move towards one side of the main tower;
s5, hoisting the two transverse channels to the side of the main tower by using hoisting equipment and lowering the two transverse channels;
the two lateral hoisting mechanisms (3) are respectively positioned right above the two catwalks (7), and the middle hoisting mechanism (5) is positioned between the two lateral hoisting mechanisms (3).
2. The suspension bridge catwalk multi-channel transverse overpass synchronous dismantling construction method according to claim 1, characterized in that: in the step S1, before hoisting the adjacent first transverse channel (21) and second transverse channel (22) in a single pass, the side guardrails on the transverse channels are removed.
3. The suspension bridge catwalk multi-channel transverse overpass synchronous dismantling construction method according to claim 1, characterized in that: in the step S2, the angle of rotation of the first transverse channel (21) under the action of the hoisting mechanism is 90 degrees.
4. The suspension bridge catwalk multi-channel transverse overpass synchronous dismantling construction method according to claim 3, characterized in that: the hoisting equipment comprises a supporting truss (4) fixedly arranged between two side hoisting mechanisms (3), the driving assembly (41) is fixedly arranged on the supporting truss (4), and the middle hoisting mechanism (5) is arranged at the output end of the driving assembly (41).
5. The suspension bridge catwalk multi-channel transverse overpass synchronous dismantling construction method according to claim 4, characterized in that: the output of drive assembly (41) is provided with lifting subassembly (42), lifting subassembly (42) including set firmly in connection truss (421) of the output of drive assembly (41) and set firmly in linear drive spare (422) of connecting truss (421), the vertical setting of linear drive spare (422), linear drive spare (422) are provided with two in the both ends along first transverse channel (21), the output and middle part hoisting machine of linear drive spare (422) construct (5) and articulate.
6. The suspension bridge catwalk multi-channel transverse overpass synchronous dismantling construction method according to claim 4, characterized in that: the top end of the connecting truss (421) is fixedly provided with a connecting rod (6), the supporting truss (4) is provided with a sliding groove (431), and the connecting rod (6) penetrates through the sliding groove (431) and is in sliding fit with the sliding groove (431).
7. The suspension bridge catwalk multi-channel transverse overpass synchronous dismantling construction method according to claim 6, characterized in that: the top end of the connecting rod (6) is bent outwards to form an extension rod (61), and the extension rod (61) abuts against the upper surface of the supporting truss (4).
8. The suspension bridge catwalk multi-channel transverse overpass synchronous dismantling construction method according to claim 1, characterized in that: the first transverse channel (21) is located on the side remote from the main tower, and the second transverse channel (22) is located on the side close to the main tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355870.7A CN114108502B (en) | 2021-11-16 | 2021-11-16 | Synchronous dismantling construction method for multiple transverse overpasses of suspension bridge catwalk |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111355870.7A CN114108502B (en) | 2021-11-16 | 2021-11-16 | Synchronous dismantling construction method for multiple transverse overpasses of suspension bridge catwalk |
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| CN114108502A true CN114108502A (en) | 2022-03-01 |
| CN114108502B CN114108502B (en) | 2024-03-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0649810A (en) * | 1992-07-27 | 1994-02-22 | Teruo Takatsu | Method of removing bridge crossbeam |
| CA2897654A1 (en) * | 2014-07-15 | 2016-01-15 | Warrior Rig Ltd. | Pipe handling apparatus and methods |
| CN111155451A (en) * | 2020-01-16 | 2020-05-15 | 中铁十九局集团第六工程有限公司 | Method for dismantling highway-span iron bridge |
| CN111764294A (en) * | 2020-07-15 | 2020-10-13 | 安徽晟园景观工程有限公司 | Method for dismantling catwalk plate |
| WO2021078310A1 (en) * | 2019-10-21 | 2021-04-29 | 宁波市政工程建设集团股份有限公司 | Method for removal of temporary support system for road bridge pre-fabricated small box girder-type concealed bent cap, and equipment therefor |
-
2021
- 2021-11-16 CN CN202111355870.7A patent/CN114108502B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0649810A (en) * | 1992-07-27 | 1994-02-22 | Teruo Takatsu | Method of removing bridge crossbeam |
| CA2897654A1 (en) * | 2014-07-15 | 2016-01-15 | Warrior Rig Ltd. | Pipe handling apparatus and methods |
| WO2021078310A1 (en) * | 2019-10-21 | 2021-04-29 | 宁波市政工程建设集团股份有限公司 | Method for removal of temporary support system for road bridge pre-fabricated small box girder-type concealed bent cap, and equipment therefor |
| CN111155451A (en) * | 2020-01-16 | 2020-05-15 | 中铁十九局集团第六工程有限公司 | Method for dismantling highway-span iron bridge |
| CN111764294A (en) * | 2020-07-15 | 2020-10-13 | 安徽晟园景观工程有限公司 | Method for dismantling catwalk plate |
Non-Patent Citations (1)
| Title |
|---|
| 贾兵团;张明闪;王培;张波;于学强;: "一种贝雷式悬索桥猫道横向通道构造", 公路, no. 05, 25 May 2017 (2017-05-25) * |
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