CN110565535A - Suspension bridge space main cable linear adjusting device and adjusting method - Google Patents
Suspension bridge space main cable linear adjusting device and adjusting method Download PDFInfo
- Publication number
- CN110565535A CN110565535A CN201910936553.0A CN201910936553A CN110565535A CN 110565535 A CN110565535 A CN 110565535A CN 201910936553 A CN201910936553 A CN 201910936553A CN 110565535 A CN110565535 A CN 110565535A
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- main cable
- adjusting
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- suspension bridge
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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
- E01D11/02—Suspension 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a suspension bridge space main cable linear adjusting device and an adjusting method, relating to the technical field of suspension bridge construction, comprising two main cable clasps, two groups of supports, a plurality of adjusting parts and standard joint top beams, wherein the two main cable clasps are respectively detachably fixed on two side main cables, the two groups of supports are respectively arranged on the two main cable clasps, each group of supports is at least provided with two supports which are arranged along the length direction of the main cable clasps, the supports are connected with the standard joint top beams or the adjusting parts, the adjusting parts can stretch along the length direction, both ends of the adjusting parts are respectively connected with the supports, the standard joint top beams or another adjusting part, the standard joint top beams comprise a plurality of first standard joint top beams and a plurality of second standard joint top beams, both ends of the first standard joint top beams are respectively connected with the supports, the adjusting parts or another first standard joint top beams, both ends of the second standard joint top beams are respectively connected with the supports or another second standard joint top beams, the invention can complete the main cable type adjustment of various cable distances.
Description
Technical Field
the invention relates to the technical field of suspension bridge construction, in particular to a suspension bridge space main cable linear adjusting device and method.
Background
In recent years, a large-span suspension bridge is developed unprecedentedly, the width-span ratio of the suspension bridge is continuously reduced along with the development, and the transverse rigidity of the bridge is also continuously reduced, so that the dynamic stability of the bridge is influenced. The spatial cable suspension bridge is a three-dimensional cable system formed by a main cable and a sling, has attractive structural appearance, improves the transverse stress performance and the dynamic stability, and is favored by designers.
at present, a space cable system is mostly used for urban self-anchored suspension bridges, but due to the unique advantages of the space cable system, the space cable system is gradually adopted by the design of large-span suspension bridges. The accuracy of the line type of the main cable in the space directly determines the unstressed length of the main cable and the sling, and further influences the line type of the bridge deck and the deviation of the main tower, so that the accuracy of the line type of the main cable is very important.
disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a suspension bridge space main cable type adjusting device and method, which can complete main cable type adjustment of various cable distances.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
The first aspect provides a suspension bridge space main cable linear adjusting device which comprises two main cable holding clamps, two groups of supports, a plurality of adjusting pieces and a standard joint top beam;
The two main cable holding clamps are respectively used for detachably fixing the two main cables on the two sides;
the two groups of supports are respectively arranged on the two main cable clasping clamps, at least two supports are arranged in each group and are arranged along the length direction of the main cable clasping clamps, and the supports are connected with the standard knot top beam or the adjusting piece;
the adjusting piece can stretch out and draw back along the length direction of the adjusting piece, and two ends of the adjusting piece are respectively connected with the support, the standard joint top beam or another adjusting piece;
The standard knot back timber includes a plurality of first standard knot back timbers and a plurality of second standard knot back timber, first standard knot back timber both ends respectively with support, regulating part or another first standard knot back timber are connected, second standard knot back timber both ends respectively with support or another second standard knot back timber are connected.
On the basis of the technical scheme, the main cable holding clamp comprises a first body and a second body detachably connected with the first body, and when the first body is fixed with the second body, the first body and the second body are provided with a channel for accommodating the main cable.
On the basis of the technical scheme, the main cable holding clamp further comprises a holding ring fastener, the holding ring fastener is arranged at the joint of the first body and the second body, the holding ring fastener comprises a first fixing plate, a second fixing plate and a fixing bolt, and the first fixing plate and the second fixing plate are respectively arranged on the first body and the second body.
On the basis of the technical scheme, the adjusting part comprises an adjusting barrel and a hydraulic cylinder arranged in the adjusting barrel, the adjusting barrel comprises a first barrel body and a second barrel body, the first barrel body is sleeved in the second barrel body in a sliding mode, and the hydraulic cylinder is connected with the first barrel body and the second barrel body respectively.
on the basis of the technical scheme, the first cylinder or the second cylinder is provided with a resistance reducing gasket for reducing the damping coefficient.
on the basis of the technical scheme, the cross sections of the first cylinder and the second cylinder are matched square.
On the basis of the technical scheme, a flexible material layer is arranged between the main cable holding clamp and the main cable.
On the basis of the technical scheme, be equipped with on the main push-towing rope embraces and presss from both sides along its length direction and set up a plurality of first otic placodes, be equipped with the second otic placode on the support, the second otic placode with first otic placode is articulated.
On the basis of the technical scheme, connecting plates are arranged at the two ends of the support, the two ends of the adjusting piece and the two ends of the standard joint top beam, and the adjacent connecting plates are connected through bolts.
in a second aspect, there is also provided an adjusting method using the suspension bridge space main cable type adjusting device, including the following steps:
respectively installing the main cable clasping clamps of the plurality of adjusting devices on a plurality of installation nodes to be adjusted of the main cable, and installing the support on the main cable clasping clamps;
Install between two relative supports the regulating part, and when the initial effect length of regulating part is less than two support intervals, be connected a plurality of first accurate festival back timber of mark and/or other regulating part between regulating part and support, when the initial effect length of regulating part equals two support intervals, two support are connected at the regulating part both ends
Connecting second standard joint top beams among the other pairs of supports;
Controlling the adjusting piece to perform pushing or shrinking operation, temporarily locking the adjusting piece after the adjusting piece is pushed or shrunk, correspondingly increasing or decreasing a second standard knot top beam between the other supports, releasing the temporary locking of the adjusting piece, enabling the adjusting piece to recover a state to be pushed or shrunk, and increasing or decreasing a first standard knot top beam or another adjusting piece in an interval where the adjusting piece is located;
and controlling the adjusting piece to perform pushing or retracting operation for multiple times to enable the main cable to reach a preset position, locking the adjusting piece, and removing the second standard joint top beam between the supports to finish linear adjustment of the main cable.
Compared with the prior art, the invention has the advantages that:
the invention relates to a suspension bridge space main cable linear adjusting device, which can complete linear adjustment of a main cable through an adjusting piece and a second standard joint top beam, and can be suitable for linear adjustment of main cables with various cable distances through the matching effect of the adjusting piece, the second standard joint top beam and a first standard joint top beam.
Drawings
FIG. 1 is a schematic view of a linear adjustment device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a linear adjustment mechanism in accordance with an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of a linear adjustment mechanism in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a linear adjusting device during pushing or retracting in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a linear adjustment device for installing a second standard knot top beam according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of the linear adjustment device after the linear adjustment is completed according to the embodiment of the present invention;
fig. 7 is a perspective view of the linear adjusting device according to the embodiment of the present invention after the linear adjustment is completed.
In the figure: 1-main cable holding clamp, 11-first body, 12-second body, 13-holding ring fastener, 14-first fixing plate, 15-second fixing plate, 16-first lug plate, 2-support, 21-second lug plate, 3-adjusting piece, 31-adjusting cylinder, 32-first cylinder, 33-second cylinder, 34-drag reduction gasket, 4-standard knot top beam, 41-first standard knot top beam, 42-second standard knot top beam, 5-main cable and 6-connecting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
referring to fig. 1 to 6, an embodiment of the present invention provides a suspension bridge space main cable linear adjustment device, including two main cable clasps 1, two sets of supports 2, a plurality of adjusting members 3 and standard knot top beams 4, where the two main cable clasps 1 are respectively used for detachably fixing to two main cables 5, preferably, the main cable clasps 1 include a first body 11 and a second body 12 detachably connected to the first body 11, and when the first body 11 is fixed to the second body 12, the first body 11 and the second body 12 are provided with channels for accommodating main cables, the two sets of supports 2 are respectively provided on the two main cable clasps 1, each set of supports 2 is provided with at least two supports and is arranged along a length direction of the main cable clasps 1, and the supports 2 are connected to the standard knot top beams 4 or the adjusting members 3, the adjusting members 3 can extend and retract along a length direction thereof, and two ends of the adjusting members 3 are respectively connected to the supports 2, the standard knot top beams 4 or the other adjusting members 3, the standard knot top beam 4 comprises a plurality of first standard knot top beams 41 and a plurality of second standard knot top beams 42, two ends of the first standard knot top beam 41 are respectively connected with the support 2, the adjusting piece 3 or another first standard knot top beam 41, and two ends of the second standard knot top beam 42 are respectively connected with the support 2 or another second standard knot top beam 42.
the regulating part 3 and the second standard knot top beam 42 that set up, when adjusting 5 line types of main push-towing rope, push away and the shrink effect through regulating part 3, push away and draw in the operation to main push-towing rope 5, thereby accomplish the line type adjustment to main push-towing rope 5, when the length of regulating part 3 can not satisfy the main push-towing rope of great cable distance, can be through continuing to connect first standard knot top beam 41 and/or increase extra regulating part 3 on regulating part 3, make it can satisfy the main push-towing rope of different cable distances, simultaneously, through regulating part 3, the cooperation of second standard knot top beam 42 and first standard knot top beam 41, can make its main push-towing rope line type adjustment who is applicable to various cable distances.
Referring to fig. 2 and 3, the main cable clasping clamp 1 further comprises a clasping fastener 13, the clasping fastener 13 is arranged at a joint of the first body 11 and the second body 12, the clasping fastener 13 comprises a first fixing plate 14, a second fixing plate 15 and a fixing bolt, the first fixing plate 14 and the second fixing plate 15 are respectively arranged on the first body 11 and the second body 12, and the first body 11 and the second body 12 can be fixed through cooperation of the first fixing plate 14, the second fixing plate 15 and the fixing bolt, and meanwhile, reinforcing ribs are arranged between the first body 11 and the second body 12 and between the first fixing plate 14 and the second fixing plate 15 respectively, so that the clasping fastener 13 can be structurally strengthened to a certain extent, and the fixing stability of the clasping fastener 13 is ensured.
Referring to fig. 4, the adjusting member 3 includes an adjusting cylinder 31 and a hydraulic cylinder disposed in the adjusting cylinder 31, the adjusting cylinder 31 includes a first cylinder 32 and a second cylinder 33, the first cylinder 32 is slidably sleeved in the second cylinder 33, and the hydraulic cylinder is connected to the first cylinder 32 and the second cylinder 33 respectively, through the setting of the adjusting cylinder 31, the hydraulic cylinder can be protected to a certain extent, so that when the main cable type adjustment is performed, the damage of the external environment to the hydraulic cylinder is reduced, and the hydraulic cylinder also serves as a hydraulic cylinder guide rail, and the set adjusting cylinder 31 can be conveniently connected to the support 2 and the first standard top beam 41; further, be equipped with the drag reduction facing 34 that reduces damping coefficient on first barrel 32 or the second barrel 33, can reduce frictional resistance between first barrel 32 and the second barrel 33, and then improve top and push away and shrink efficiency, the cross-section of first barrel 32 and second barrel 33 is the square of matching, can make first barrel 32 and second barrel 33 have a circumference spacing effect, when avoiding adjusting a section of thick bamboo 31 for circular or directly setting up the pneumatic cylinder, top and shrink in-process, the pivoted condition appears, and then can avoid rotating to lead to damaging the condition appearance that the pneumatic cylinder or main cable held clamp 1.
the main push-towing rope embraces and presss from both sides 1 and main push-towing rope 5 within a definite time and is equipped with the flexible material layer, can avoid the main push-towing rope to embrace when pressing from both sides 1 direct contact main push-towing rope 5, leads to main push-towing rope 5 to receive great stress and damage, simultaneously, can play the cushioning effect at the in-process that pushes away and contract, avoids because push away too concentrates with shrink in-process stress, and leads to main push-towing rope 5 to appear the damaged condition.
referring to fig. 3, the main cable clamp 1 is provided with a plurality of first ear plates 16 along the length direction thereof, the support 2 is provided with a second ear plate 21, the second ear plate 21 is hinged to the first ear plates 16, so that the functions of connecting, transferring load or temporary consolidation can be achieved, the adjusting piece 3 can be pushed and contracted in more than one direction through the hinging action of the first ear plates 16 and the second ear plates 21, and the linear adjustment operation of the main cable 5 can be still completed when two main cables 5 have a certain height difference.
The connecting plates 6 are arranged at the two ends of the support 2, the adjusting part 3 and the standard joint top beam 4, the adjacent connecting plates 6 are connected through bolts, and the connecting plates 6 are arranged, so that the two ends of the support 2, the adjusting part 3 and the standard joint top beam 4 can be combined and connected at will, further, the requirements of increasing or reducing the length in the pushing and shrinking processes can be met, and the line type adjustment of main cables 5 with different cable distances can be realized, meanwhile, the connection diversity of the two ends of the support 2, the adjusting part 3 and the standard joint top beam 4 is realized, and further, the requirements of different conditions can be met; and through the setting of connecting plate 6, can further guarantee, adjusting part 3 both ends all can be connected with support 2, standard festival back timber 4 or another adjusting part 3, and first standard festival back timber 41 both ends all can be connected with support 2, adjusting part 3 or another first standard festival back timber 41, and second standard festival back timber 42 both ends all can be connected with support 2 or another second standard festival back timber 42.
referring to fig. 1 to 7, an embodiment of the present invention further provides an adjusting method using the suspension bridge space main cable type adjusting device, including the following steps:
After the main cable 5 is erected, a sling cable clamp is installed, a connecting device between catwalks is disassembled, and the arrangement of the sling of the catwalks is changed;
the adjusting device is transported to the lower part of the main tower construction area and hoisted to the tower top construction area by utilizing hoisting equipment;
Adjusting a catwalk portal frame bearing cable, respectively installing main cable clamps 1 of a plurality of adjusting devices on a plurality of installation nodes to be adjusted of a main cable 5 by utilizing a bearing cable top cable hanging system, and installing supports 2 on the main cable clamps 1, wherein the adjusting devices are symmetrically arranged along the center line of a bridge;
Installing the adjusting part 3 between the two opposite supports 2, connecting a plurality of standard first standard top beams 41 and/or other adjusting parts 3 between the adjusting part 3 and the supports 2 when the initial acting length of the adjusting part 3 is less than the distance between the two supports 2, and connecting two supports 2 at two ends of the adjusting part 3 when the initial acting length of the adjusting part 3 is equal to the distance between the two supports 2
second standard knot top beams 42 are connected among a plurality of other pairs of supports 2;
After the adjusting device is installed, the debugging equipment is checked on site to ensure that the component connection and the work of the adjusting piece 3 meet the construction requirements;
controlling the adjusting part 3 to perform pushing or shrinking operation, temporarily locking the adjusting part 3 after the adjusting part 3 pushes or shrinks, correspondingly increasing or decreasing a second standard knot top beam 42 between the supports 2, releasing the temporary locking of the adjusting part 3 and enabling the adjusting part 3 to recover a state to be pushed or shrunk, and increasing or decreasing a first standard knot top beam 41 or another adjusting part 3 in an interval where the adjusting part 3 is located;
controlling the adjusting part 3 to perform pushing or retracting operation for multiple times to enable the main cable 5 to reach a preset position, locking the adjusting part 3, and removing a second standard knot top beam 42 between the supports 2 to finish linear adjustment of the main cable 5;
And sequentially dismantling the linear adjusting devices after the stiffening beam is installed, wherein the dismantling method is the same as the installation method, the cable crane system is adopted for dismantling, and the dismantling construction steps are reversed.
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 (10)
1. a suspension bridge space main cable linear adjusting device is characterized by comprising two main cable holding clamps (1), two groups of supports (2), a plurality of adjusting pieces (3) and a standard joint top beam (4);
The two main cable holding clamps (1) are respectively detachably fixed on the main cables (5) on the two sides;
The two groups of the supports (2) are respectively arranged on the two main cable clasping clamps (1), at least two supports (2) are arranged in each group and are arranged along the length direction of the main cable clasping clamps (1), and the supports (2) are connected with the standard joint top beam (4) or the adjusting piece (3);
the adjusting piece (3) can stretch out and draw back along the length direction, and two ends of the adjusting piece (3) are respectively connected with the support (2), the standard joint top beam (4) or the other adjusting piece (3);
Standard festival back timber (4) include a plurality of first standard festival back timber (41) and a plurality of second standard festival back timber (42), first standard festival back timber (41) both ends respectively with support (2), regulating part (3) or another first standard festival back timber (41) are connected, second standard festival back timber (42) both ends respectively with support (2) or another second standard festival back timber (42) are connected.
2. The suspension bridge space main cable type adjusting device according to claim 1, wherein: the main cable holding clamp (1) comprises a first body (11) and a second body (12) detachably connected with the first body (11), and when the first body (11) is fixed with the second body (12), the first body (11) and the second body (12) are provided with a channel for accommodating a main cable.
3. The suspension bridge space main cable type adjusting device according to claim 2, wherein: the main cable holding clamp (1) further comprises a holding ring fastener (13), the holding ring fastener (13) is arranged at the joint of the first body (11) and the second body (12), the holding ring fastener (13) comprises a first fixing plate (14), a second fixing plate (15) and a fixing bolt, and the first fixing plate (14) and the second fixing plate (15) are arranged on the first body (11) and the second body (12) respectively.
4. The suspension bridge space main cable type adjusting device according to claim 1, wherein: the adjusting part (3) comprises an adjusting barrel (31) and a hydraulic cylinder arranged in the adjusting barrel (31), the adjusting barrel (31) comprises a first barrel body (32) and a second barrel body (33), the first barrel body (32) is slidably sleeved in the second barrel body (33), and the hydraulic cylinder is connected with the first barrel body (32) and the second barrel body (33) respectively.
5. The suspension bridge space main cable type adjusting device according to claim 4, wherein: and the first cylinder (32) or the second cylinder (33) is provided with a drag reduction lining (34) for reducing the damping coefficient.
6. the suspension bridge space main cable type adjusting device according to claim 4, wherein: the cross sections of the first cylinder (32) and the second cylinder (33) are matched square.
7. the suspension bridge space main cable type adjusting device according to claim 1, wherein: a flexible material layer is arranged between the main cable holding clamp (1) and the main cable (5).
8. The suspension bridge space main cable type adjusting device according to claim 1, wherein: be equipped with on main cable armful clamp (1) and set up a plurality of first otic placodes (16) along its length direction, be equipped with second otic placode (21) on support (2), second otic placode (21) with first otic placode (16) are articulated.
9. The suspension bridge space main cable type adjusting device according to claim 1, wherein: and the two ends of the support (2), the two ends of the adjusting piece (3) and the two ends of the standard joint top beam (4) are respectively provided with a connecting plate (6), and the two adjacent connecting plates (6) are connected through bolts.
10. An adjusting method using the suspension bridge space main cable type adjusting device according to any one of claims 1 to 9, characterized by comprising the following steps:
Respectively installing the main cable clasping clamps (1) of the plurality of adjusting devices on a plurality of installation nodes to be adjusted of a main cable (5), and installing the support (2) on the main cable clasping clamps (1);
install between two relative supports (2) regulating part (3), and when the initial action length of regulating part (3) is less than two supports (2) interval, be connected a plurality of first accurate festival back timber (41) of mark and/or other regulating part (3) between regulating part (3) and support (2), when the initial action length of regulating part (3) equals two supports (2) interval, two supports (2) are connected at regulating part (3) both ends
second standard knot top beams (42) are connected among the other pairs of supports (2);
controlling the adjusting piece (3) to perform pushing or shrinking operation, temporarily locking the adjusting piece (3) after the adjusting piece (3) pushes or shrinks, correspondingly increasing or decreasing a second standard knot top beam (42) between the supports (2), releasing the temporary locking of the adjusting piece (3) and enabling the adjusting piece (3) to recover to-be-pushed or shrunk state, and increasing or decreasing a first standard knot top beam (41) or other adjusting pieces (3) in the interval where the adjusting piece (3) is located;
and controlling the adjusting piece (3) to perform pushing or retracting operation for multiple times to enable the main cable (5) to reach a preset position, locking the adjusting piece (3), and removing a second standard knot top beam (42) between the supports (2) to finish linear adjustment of the main cable (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936553.0A CN110565535B (en) | 2019-09-29 | 2019-09-29 | Suspension bridge space main cable linear adjusting device and adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910936553.0A CN110565535B (en) | 2019-09-29 | 2019-09-29 | Suspension bridge space main cable linear adjusting device and adjusting method |
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| CN110565535A true CN110565535A (en) | 2019-12-13 |
| CN110565535B CN110565535B (en) | 2021-01-26 |
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| CN201910936553.0A Active CN110565535B (en) | 2019-09-29 | 2019-09-29 | Suspension bridge space main cable linear adjusting device and adjusting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691296A (en) * | 2020-04-30 | 2020-09-22 | 武汉船用机械有限责任公司 | Double main cable clamp |
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| CN107059650A (en) * | 2017-06-28 | 2017-08-18 | 四川公路桥梁建设集团有限公司 | A kind of main rope of suspension bridge thrustor |
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| JPH11193884A (en) * | 1998-01-06 | 1999-07-21 | Sumitomo Electric Ind Ltd | Tightening force-adjusting clamp |
| CN104060540A (en) * | 2014-06-03 | 2014-09-24 | 长安大学 | Temporary cross bracing of space cable suspension bridge and lifting-constructing method of temporary cross bracing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111691296A (en) * | 2020-04-30 | 2020-09-22 | 武汉船用机械有限责任公司 | Double main cable clamp |
| CN111691296B (en) * | 2020-04-30 | 2022-04-15 | 武汉船用机械有限责任公司 | Double main cable clamp |
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| CN110565535B (en) | 2021-01-26 |
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