CN107447665B - A kind of laying method of self-anchored suspension bridge construction cat road carrying rope - Google Patents
A kind of laying method of self-anchored suspension bridge construction cat road carrying rope Download PDFInfo
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- CN107447665B CN107447665B CN201710701769.XA CN201710701769A CN107447665B CN 107447665 B CN107447665 B CN 107447665B CN 201710701769 A CN201710701769 A CN 201710701769A CN 107447665 B CN107447665 B CN 107447665B
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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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- 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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Abstract
The invention discloses a kind of self-anchored suspension bridge construction laying methods of cat road carrying rope, it is related to field of bridge construction, it is characterized in that by tower top steel platform on the king-tower of the suspention of main push-towing rope laying, the tower crane of Construction of Pylon and cable saddle lifting, in advance by the grouping of cat road carrying rope setting, it will be below cat road carrying Suo Yunzhi king-tower with towboat, it is lifted again with tower crane and suspention, it realizes the aerial laying of cat road carrying rope and is fixed in corresponding fixed point, other cat roads of suspension bridge carrying rope laying is similarly completed, to complete the aerial laying work of cat road carrying rope；Its construction procedure are as follows: one, preparation of construction；Two, cat road carries rope group pair；Three, rope is applied in the air；Four, cat road carrying rope adjustment.The present invention can reduce construction personnel and lay the aerial work of cat road carrying Suo Suoxu and the time that water route is iceound, improve construction efficiency, guarantee construction speed, have good economic benefit and social benefit.
Description
Technical field
The present invention relates to field of bridge construction, and in particular to a kind of laying of self-anchored suspension bridge construction cat road carrying rope
Method.
Background technique
Cat road is under main rope of suspension bridge and to be parallel to a kind of linear temporary construction aerial platform of main push-towing rope, and cat road is held
The core component that rope is operation platform is carried, generally by eight wirerope in being arranged in parallel with main push-towing rope and both ends are anchored at king-tower respectively
On the anchoring part at end and bridge bank end, the carrying rope center line after forming is lower than main push-towing rope center line 1500mm or so, to facilitate constructor
Such as strand traction is completed on the road Yuan Mao, adjusts stock, shaping to enter saddle, jam-packed, cord clip and hoist cable installation, box beam lifting and main push-towing rope to twine
The construction tasks such as silk, protective coating.
Cat road carrying rope installation conventional method be using laying main rope of suspension bridge suspention, by the road Gen Jiangmao carry rope from
Bridge bank end is drawn to anchoring on king-tower, or is towed from bridge bank end to being attached anchoring, above method from king-tower with towboat by root
Operation is more in construction space-time, and the water route iceound time is long, and construction efficiency is low, directly restricts construction speed.
Currently, retrieving the patent of similar title about the self-anchored suspension bridge construction laying method of cat road carrying rope
Design, as China national Patent Office's on April 29th, 2009 announce " a kind of space self-anchored type suspension cable funicular system construction method ",
Announce in publication No. CN101418542A and on October 10th, 2012 " guide cable crosses river and the integrated construction party of Traction sysytem
Method ", two similar to the laying method in construction patents without specifically describing cat road carrying rope.
Summary of the invention
The purpose of the present invention is to propose to a kind of self-anchored suspension bridge construction laying methods of cat road carrying rope, reduce construction
Personnel lay the aerial work of cat road carrying Suo Suoxu and the time that water route is iceound, improve construction efficiency, guarantee construction speed.
To achieve the above object, the invention provides the following technical scheme:
A kind of laying method of self-anchored suspension bridge construction cat road carrying rope of the present invention, it is characterized in that: being applied by main push-towing rope
If suspention, Construction of Pylon tower crane and cable saddle lifting king-tower on tower top steel platform, in advance by cat road carrying rope setting point
Wirerope is placed in parallel by group by arrangement spacing, and will have been put down with anchor beam, adjusting yoke, connecting rod, rope card respectively at its both ends
Row is put and Justified wirerope connects to form cat road carrying rope, is carried in the cat road of grouping under Suo Yunzhi king-tower with towboat
Side, then lifted with tower crane and suspention, realize the aerial laying of cat road carrying rope and be fixed in corresponding fixed point, similarly complete
Other cat roads of suspension bridge carry rope laying, to complete the aerial laying work of cat road carrying rope；
The cat road carrying rope includes anchorage, anchor beam under cat road carrying rope upper fixed seat, cat road carrying rope, adjusts and draw
Bar, connecting rod, rope card and wirerope；Cat road carrying rope installation front suspension, tower crane, the tower top steel platform on king-tower have had use
Condition, cat road carry anchorage and the road king-tower Shang Mao under the road Suo Mao carrying rope upper fixed seat and cat road carrying rope and carry on rope
Workbench below fixing seat has been arranged in place, construction procedure are as follows: one, preparation of construction；Two, cat road carries rope group pair；Three,
Deposited rope in the air；Four, cat road carrying rope adjustment；
Wherein:
Step 1: preparation of construction:
According to the linear of main rope of suspension bridge, the both ends for calculating cat road carrying rope carry under rope in the road bridge An Duanmao respectively
Anchorage and the road king-tower Shang Mao carrying rope upper fixed seat position dimension and suspention carrying rope both ends carry under rope in suspention respectively
Suspention at anchorage and tower top steel platform carries rope upper fixed seat position dimension；Cat road carries rope centered on main push-towing rope center line
And parallel and position lower than main push-towing rope center line 1500mm is to calculate cat road to carry rope installation theoretical position；
Anchorage synchronizes embedded when bridge bank end dissipates cable saddle foundation construction under cat road carrying rope, and cat road carries rope upper fixed seat
Synchronous in concrete construction of main tower to implement, anchorage is in the main push-towing rope Anchor Foundation concrete construction of bridge bank end under suspention carrying rope
Synchronous construction, suspention carrying rope upper fixed seat are directly welded and fixed with tower top steel platform column side；
Cat road carrying rope is symmetrically laid with king-tower to bridge bank end by group, is laterally pulled with reducing the imbalance that king-tower is subject to
Power；
Before cat road carries rope installation, it is ensured that suspention carrying rope has been fixed in anchorage and suspention carrying rope under suspention carrying rope
It between upper fixed seat, and suspends sport car in midair and has been suspended on suspention carrying rope, traction rope winds 3 from the reel of angle mill hoist engine
After circle, diverted wheel is fixed on the suspention left and right end of sport car, and suspention sport car moves back and forth and crane hook descending stroke has been expired
The road Zu Mao carries the laying demand of rope, and the workbench below tower top steel platform and cat road carrying rope upper fixed seat has installed
Finish；
Step 2: cat road carries rope group pair:
The wirerope of the every road Zu Mao carrying rope is 8, is placed in parallel by arrangement spacing, the two ends of each wirerope are all made of
Anchor beam, adjusting yoke, connecting rod, rope card are formed by connecting；Wherein, the rope end of each wirerope of cat road carrying rope through rope card and is adjusted
Pull rod is fixed, and then the adjusting yoke other end is connect with anchor beam, then the fixed connecting rod on anchor beam, i.e. completion cat road carries rope
The group pair of one end；Equally according to said method complete the group pair of this cat road carrying rope other end；Then the carrying of other roads Zu Mao is completed again
The group pair at rope both ends；Connecting rod on the both ends anchor beam of cat road carrying rope for carried respectively with cat road rope upper fixed seat and
Cat road carries anchorage under rope and connects；
Step 3: applying rope in the air:
The cat road carrying rope that assembling finishes is transported to below king-tower with towboat, is separately connected cat road carrying rope both ends with hoist cable
Anchor beam center at, with the hoist cable of crane hook fixed bridge bank end anchor beam, promoted at crane hook to suspention sport car, hoist cable moved
To suspention sport car, then crane hook back hook, connection cat road are carried at the hoist cable on other end anchor beam, are slowly promoted tower crane and are hung
Hook, the road Shi Mao carrying rope are gradually promoted, and in suspention sport car and tower crane to carrying off, cat road carrying rope progressively disengages towboat, continues
Crane hook is promoted, so that anchor beam is moved at cat road carrying rope upper fixed seat, is then held the connecting rod on anchor beam with Mao Dao
It carries rope upper fixed seat to be fixedly connected, completes to fix at cat road carrying rope king-tower；It starts angle and grinds hoist engine, suspend sport car in midair in traction rope
Drive under it is mobile towards bridge bank end, under the action of suspending the tractive force and suspention sport car sliding force of sport car in midair, cat road is carried under rope
End anchor beam is moved under the cat road carrying rope on scattered cable saddle basis at anchorage, and the connecting rod on anchor beam is casted anchor with cat road carrying rope
Gu seat is fixedly connected, complete to fix at the scattered cable saddle of cat road carrying rope；Similarly other cat roads carrying rope is completed with the above laying method
Laying work；
Step 4: cat road carrying rope adjustment:
In order to guarantee the balance of king-tower horizontal force, upstream and downstream and the road across Duan Mao carrying rope should all terminate in place, and
Bands shape is carried to cat road at any time during adjustment and king-tower displacement is monitored；
Cat road carries rope should carry out live adjustment according to its sky cable absolute altitude, to guarantee that cat road carrying bands type and main push-towing rope are unloaded
Line style is almost the same；Chain block is set between anchor beam and adjusting yoke, adjusting yoke is cooperated by chain block, completes steel
The elastic state adjustment of cord, keeps every steel wire rope tension consistent, and the wirerope adjustment of cat road carrying rope is using the side pulled by root
Formula carries out.
Further, anchorage and suspention carrying under the road step 1 Zhong Mao carrying rope upper fixed seat, cat road carrying rope
Anchorage is all made of length 1000mm under rope upper fixed seat, suspention carrying rope, and specification is made of the rail of QU80, in rail one end
The through-hole that diameter is 62mm is opened up at the center web of the rail 90mm, by aperture end towards outside when rail is embedded, anchorage depth, angle are combined
Construction site condition determines that stress load is pressed maximum cat road carrying rope respectively, suspended in midair on carrying rope with 3D simulation and Force Calculation
3 times of safety coefficients of load are calculated.
Further, the step 2 adjusting yoke and the equal one end of connecting rod are connection wire rod and the long 600mm of thread,
The other end is that the body of rod bends to annulus closing form, and bending internal diameter is 100mm, and adjusting yoke diameter is 42mm, and length is equal
800mm, connection shank diameter are 60mm, the equal 1000mm of length；
The 20# I-shaped steel part that the anchor beam is two pieces length 3800mm forms, and I-steel is by length direction and by two works
Word steel between the two away from being arranged for 65mm mode, and is symmetrical with I-steel length direction center line by web is parallel, wing plate is concordant
Line, the distance centered on equidistant 450mm is pressed on the wing plate surface of wherein side, is welded with 8 pieces of centers and opens up diameter 45mm through-hole, outside
Shape is having a size of 150mm × 150mm, and the backing plate of thickness 40mm, pressing 2200mm on its another side wing surface is spacing, is welded with 2 pieces
It is 62mm through-hole that center, which opens up diameter, and outer dimension is 150mm × 150mm, and the backing plate of thickness 40mm welds two I-steel solid
It is shaped as anchor beam；
The road Liang Zumao carrying rope is arranged under a piece main rope of suspension bridge and is to be arranged symmetrically with king-tower, the every road Zu Mao carrying rope
Wirerope one end is folded to wirerope after passing through adjusting yoke closed circle backward and is overlapped 1000mm in parallel along its length, with 6
Rope end and wirerope, are fixed together every 100mm, then will be installed with 8 adjusting yoke screw rod ends of wirerope by a rope card,
It is welded with from the length direction of anchor beam in the gap of the wing plate opposite side of 8 pieces of backing plates, is used in combination respectively parallel across backing plate central through hole
Nut is attached with anchor beam, and the nut of adjusting yoke should be at maximal regulated position at this time.Then by the screw rod end of connecting rod
It is welded with from the length direction of anchor beam in the intermediate space of the wing plate side of 8 pieces of backing plates, respectively by two connecting rods from the another of anchor beam
Two pieces of backing plate central through holes of side setting are pierced by, and are realized connecting rod and anchor beam with nut and connected, and the above completion cat road is held
The group pair for carrying Suo Yiduan equally according to said method completes the group pair of this cat road carrying rope other end.
Further, step 3 pin shaft passes through the annulus of cat road carrying rope upper fixed seat through-hole and connecting rod, complete
It carries at cat road and is fixed at rope king-tower；The annulus that block hole and connecting rod are anchored under cat road carrying rope is equally passed through with pin shaft, it is complete
It dissipates at cat road carrying rope and is fixed at cable saddle.
Compared with prior art, the laying side of a kind of self-anchored suspension bridge proposed by the invention construction cat road carrying rope
Method reduces aerial work and water route iceound time, improves construction efficiency, ensure that construction speed.
Detailed description of the invention
Fig. 1 is a side anchor in a kind of laying method of self-anchored suspension bridge construction proposed by the invention cat road carrying rope
Heavy stone used as an anchor schematic diagram；
Fig. 2 is king-tower area in a kind of laying method of self-anchored suspension bridge construction proposed by the invention cat road carrying rope
Domain schematic diagram；
Fig. 3 is suspention and tower crane arrangement signal in a kind of laying method of self-anchored suspension bridge construction cat road carrying rope
Figure；
The road Tu4Shi Mao carries rustling sound end combination diagram；
The road Tu5Shi Mao carries rope and lays schematic diagram one；
The road Tu6Shi Mao carries the fixed schematic diagram of Suo Yiduan；
Fig. 7 is Fig. 6 top view；
The road Tu8Shi Mao carries rope and lays schematic diagram two；
Fig. 9 is Fig. 8 top view；
In figure: 1, anchorage 2, suspention carrying rope upper fixed seat 3, cat road carry anchorage under rope under suspention carrying rope
4, cat road carrying rope upper fixed seat 5, tower top steel platform 6, deflecting roller 7, workbench 8, tower crane 9, king-tower 10, angle mill volume
Raise machine 11, suspention sport car 12, traction rope 13, suspention carrying rope 14, main push-towing rope 15, anchor beam 16, adjusting yoke 17, connection
Bar 18, hoist cable 19, chain block 20, towboat 21, pin shaft 22, crane hook 23, cat road carry rope 24, main push-towing rope anchorage
Basis 25 dissipates cable saddle basis 26, rope card.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Unless otherwise defined, the technical term or scientific term used herein should be in disclosure fields and has
The ordinary meaning that the personage of general technical ability is understood.Used in disclosure patent application specification and claims
"upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, after the absolute position for being described object changes, then should
Relative positional relationship also correspondingly changes.
By taking the bridge of Luodian County 1 as an example, which is (102+71) m self-anchored suspension bridge, and planning bridge floor clear span is 23m
(net -15m+2 × pavement 4m), the long 180m of bridge.Girder uses concrete box girder, and king-tower uses rectangular section double tower, is reinforcing bar
Concrete structure, full-bridge set two main push-towing ropes altogether, and main push-towing rope uses anchoring hot-cast anchor system, and after main push-towing rope dissipates cable saddle, main push-towing rope is in radiation
Shape is scattered.Main push-towing rope main span is 92m, and rise 9.05m, sag ratio 1/10.2, main push-towing rope end bay is 62m, rise 4.2m, sag ratio 1/
14.8.The wirerope group that this engineering cat road carries 8 φ 54 (6 × 37S-IWR) of Suo Caiyong becomes one group, is needed altogether according to construction
Lay four roads Zu Mao carrying rope.
The cat road carrying rope 23 includes anchorage 3 under cat road carrying rope upper fixed seat 4, cat road carrying rope, anchor beam 15, adjusts
Save pull rod 16, connecting rod 17, rope card 26 and wirerope, Specific construction step are as follows:
Step 1: preparation of construction (as shown in Figure 1, Figure 2, Figure 3 shows):
According to the linear of main rope of suspension bridge 14, determined according to the actual conditions of design drawing and construction site through relevant calculation
The road Chu Mao carries rope 23, suspention carrying 13 both ends of rope 9 road Chu Mao of anchorage 3 and king-tower in the case where the road bridge An Duanmao carries rope respectively
It is fixed on carrying 4 position dimension of rope upper fixed seat and anchorage 1 under suspention carrying rope and the suspention carrying rope at tower top steel platform 5
2 position dimensions of seat.Cat road carries rope 23 centered on 14 center line of main push-towing rope simultaneously in parallel and lower than 14 center line 1500mm's of main push-towing rope
Position is to calculate cat road to carry the installation theoretical position of rope 23.
Anchorage 3 dissipates at bridge bank end under cat road carrying rope synchronizes embedded, cat road carrying Suo Shanggu when cable saddle basis 25 is constructed
Reservation 4 is synchronous in 9 concrete construction of king-tower to be implemented, and anchorage 1 is mixed in bridge bank end main push-towing rope Anchor Foundation 24 under suspention carrying rope
Synchronous construction when solidifying soil construction, suspention carrying rope upper fixed seat 2 are directly welded and fixed with 5 column side of tower top steel platform.
Cat road carrying rope 23 is symmetrically laid with king-tower 9 to bridge bank end by group, to reduce the uneven side that king-tower 9 is subject to
To pulling force.
Before cat road carries the installation of rope 23, suspention carrying rope 13 has been fixed in anchorage 1 and suspention carrying under suspention carrying rope
It between rope upper fixed seat 2, and suspends sport car 11 in midair and has been suspended on suspention carrying rope 13, traction rope 12 is from the volume of angle mill hoist engine 10
On cylinder after 3 circle of winding, diverted wheel 6 is fixed on the suspention left and right end of sport car 11, and suspention sport car 11 moves back and forth and crane hook
22 descending strokes have met the laying demand of cat road carrying rope 23,4 lower section of tower top steel platform 5 and cat road carrying rope upper fixed seat
Workbench 7 installed.
Anchorage 3 and suspention carrying rope upper fixed seat 2, suspention under the cat road carrying rope upper fixed seat 4, cat road carrying rope
Anchorage 1 is all made of length 1000mm under carrying rope, and specification is made of the rail of QU80, at the center web of the rail 90mm of rail one end
The through-hole that diameter is 62mm is opened up, by aperture end towards outside when rail is embedded, anchorage depth, angle combination construction site condition,
It is determined with 3D simulation and Force Calculation, stress load presses 3 times that maximum cat road carries rope 23, suspends load on carrying rope 13 in midair respectively
Safety coefficient is calculated.
Step 2: cat road carries rope group to (as shown in Figure 4):
Cat road carry rope 23 wirerope two ends using anchor beam 15, adjusting yoke 16, connecting rod 17, rope card 26 connection and
At.Cat road carries 23 rope end of rope and fixes through rope card 6 with adjusting yoke 16, and then 16 other end of adjusting yoke is connect with anchor beam 15,
Both ends anchor beam 15 carries rope upper fixed seat 4 by pin shaft 21 with cat road respectively and cat road carries anchorage 3 under rope and connect.
The adjusting yoke 16 and the equal one end of connecting rod 17 are connection wire rod and the long 600mm of thread, the other end are bar
Body bends to annulus closing form, and bending internal diameter is 100mm, and 16 diameter of adjusting yoke is 42mm, the equal 800mm of length, connecting rod
17 diameters are 60mm, the equal 1000mm of length.
The 20# I-shaped steel part that the anchor beam 15 is two pieces length 3800mm forms, and I-steel is by length direction and by two
I-steel is by web is parallel, wing plate is concordant, between the two away from being arranged for 65mm mode, and with I-steel length direction center line for pair
Claim line, wherein side wing plate surface by distance centered on equidistant 450mm, being welded with 8 pieces of centers, to open up diameter logical for 45mm
Hole, outer dimension are 150mm × 150mm, and the backing plate of thickness 40mm, pressing 2200mm on its another side wing surface is spacing, is added
Welding 2 pieces of centers and opening up diameter is 62mm through-hole, and outer dimension is 150mm × 150mm, the backing plate of thickness 40mm, by two I-steel
It is welded and fixed to form anchor beam 15.
The lower arrangement road Liang Zumao of a piece main rope of suspension bridge 14 carries rope 23 and is to be arranged symmetrically with king-tower 9, and every road Zu Mao is held
Load rope 23 is arranged in parallel by 8 wirerope to be formed, and wirerope one end is folded to steel wire after passing through 16 closed circle of adjusting yoke backward
It restricts and rope end and wirerope is fixed together, so by overlapping 1000mm with 6 rope cards 26 every 100mm in parallel along its length
It will be installed with 8 adjusting yokes, the 16 screw rod end of wirerope afterwards, the wing plate opposite side of 8 pieces of backing plates is welded with from the length direction of anchor beam 15
Gap in, be attached respectively parallel across backing plate central through hole and with nut and anchor beam 15, at this time the spiral shell of adjusting yoke 16
Mother should be at maximal regulated position.The screw rod end of connecting rod 17 is then welded with to the wing of 8 pieces of backing plates from the length direction of anchor beam 15
In the intermediate space of plate side, two pieces of backing plate central through holes that two connecting rods 17 are arranged from the other side of anchor beam 15 are worn respectively
Out, and connecting rod 17 and anchor beam 15 are realized with nut and is connected, the above group pair for completing cat road carrying 23 one end of rope equally presses this
Method completes the group pair of this cat road carrying 23 other end of rope.
Step 3: applying rope (as shown in Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9) in the air:
The cat road carrying towboat 20 of rope 23 that assembling finishes is transported to 9 lower section of king-tower, before the transport of towboat 20, in conjunction with cat road
Carrying rope 23 is constructed whole arrangement, is applied in advance with port prison, harbour affairs, navigation channel department, publication navigation ban notice, it is ensured that cat road carrying rope
The closing of navigation channel involved in 23 laid processes.
It is separately connected with hoist cable 18 at 15 center of anchor beam at cat road carrying 23 both ends of rope, with 22 fixed bridge bank end of crane hook
The hoist cable 18 of anchor beam 15 is promoted at crane hook 22 to suspention sport car 11, hoist cable 18 is moved on suspention sport car 11, then tower crane
22 back hook of suspension hook, connection cat road carry at the hoist cable 18 on 23 other end anchor beam 15 of rope, slowly promote crane hook 22, the road Shi Mao
Carrying rope 23 is gradually promoted, and in suspention sport car 11 and tower crane 8 to carrying off, cat road carrying rope 23 progressively disengages towboat 20, continues
Crane hook 22 is promoted, cat road carrying 4 through-hole of rope upper fixed seat and 17 annulus of connecting rod is passed through with pin shaft 21, completes the carrying of cat road
It is fixed at 23 king-tower 9 of rope.It starting angle and grinds hoist engine 10, suspention sport car 11 is mobile towards bridge bank end under the drive of traction rope 12,
Under the action of the tractive force and suspention 11 sliding force of sport car that suspend sport car 11 in midair, cat road carrying 23 lower end anchor beam 15 of rope is moved to scattered rope
Under the cat road carrying rope on saddle basis 25 at anchorage 3,3 through-hole of anchorage and connection under cat road carrying rope equally are passed through with pin shaft 21
17 annulus of bar, carrying rope 23 in completion cat road dissipates to be fixed at cable saddle.Similarly other cat roads carrying rope 23 is completed with the above laying method
Laying work.
Step 4: cat road carrying rope adjustment (as shown in Figure 7):
In order to guarantee the balance of 9 horizontal force of king-tower, upstream and downstream and the road across Duan Mao carrying rope 23 should all terminate in place,
And linear to the cat road carrying rope 23 at any time and displacement of king-tower 9 is monitored during the adjustment.
Cat road carries rope 23 should carry out live adjustment according to its sky cable absolute altitude, to guarantee cat road carrying 23 line style of rope and main push-towing rope
14 unloaded line styles are almost the same.Chain block 19 is set between anchor beam 15 and adjusting yoke 16, is cooperated by chain block 19
Adjusting yoke 16 completes the adjustment of tightness of steel wire rope state, keeps 8 steel wire rope tensions consistent, and cat road carries the wirerope tune of rope 23
It is whole to be carried out by the way of being pulled by root.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (4)
1. a kind of self-anchored suspension bridge construction laying method of cat road carrying rope, it is characterized in that: by the suspention of main push-towing rope laying,
Tower top steel platform on the king-tower of tower crane and the cable saddle lifting of Construction of Pylon, in advance by the grouping of cat road carrying rope setting, by steel wire
Rope is placed in parallel by arrangement spacing, and use anchor beam, adjusting yoke, connecting rod, rope card by laid parallel respectively at its both ends and
Justified wirerope connects to form cat road carrying rope, with towboat by the cat road carrying Suo Yunzhi king-tower lower section of grouping, then uses
Tower crane and suspention lift, and realize the aerial laying of cat road carrying rope and are fixed in corresponding fixed point, similarly complete suspension bridge
Other cat roads carry rope laying, to complete the aerial laying work of cat road carrying rope；
Cat road carrying rope (23) includes anchorage (3), anchor beam under cat road carrying rope upper fixed seat (4), cat road carrying rope
(15), adjusting yoke (16), connecting rod (17), rope card (26) and wirerope, laying method include the following steps:
Step 1: preparation of construction:
According to the linear of main rope of suspension bridge (14), the both ends for calculating cat road carrying rope (23) carry in the road bridge An Duanmao respectively
Anchorage (3) and king-tower (9) road Shang Mao carrying rope upper fixed seat (4) position dimension and suspention carrying rope (13) both ends point under rope
Suspention carrying rope upper fixed seat (2) position dimension under rope at anchorage (1) and tower top steel platform (5) is not carried in suspention；Cat
Road carries rope (23) centered on main push-towing rope (14) center line and parallel and position lower than main push-towing rope (14) center line 1500mm is meter
The road Suan Mao carries rope (23) and installs theoretical position；
Anchorage (3) dissipates at bridge bank end under cat road carrying rope synchronizes embedded, cat road carrying Suo Shanggu when cable saddle basic (25) is constructed
Reservation (4) is synchronous in king-tower (9) concrete construction to be implemented, and anchorage (1) is in bridge bank end main push-towing rope anchorage base under suspention carrying rope
Synchronous construction when plinth (24) concrete construction, suspention carrying rope upper fixed seat (2) directly with tower top steel platform (5) column side into
Row is welded and fixed；
Cat road carrying rope (23) is symmetrically laid with king-tower (9) to bridge bank end by group, to reduce the imbalance that king-tower (9) is subject to
Lateral force；
Before cat road carrying rope (23) is installed, it is ensured that suspention carrying rope (13) has been fixed in suspention and carries anchorage (1) under rope and hang
Hang carrying rope upper fixed seat (2) between, and suspend in midair sport car (11) be suspended on suspention carrying rope (13) on, traction rope (12) from
Angle is ground on the reel of hoist engine (10) after 3 circle of winding, and diverted wheel (6) is fixed on suspention sport car (11) left and right end, and suspention is run
Vehicle (11) moves back and forth and crane hook (22) descending stroke has met the laying demand that cat road carries rope (23), and tower top steel is flat
Workbench (7) below platform (5) and cat road carrying rope upper fixed seat (4) has installed；
Step 2: cat road carries rope group pair:
The wirerope of the every road Zu Mao carrying rope (23) is 8, is placed in parallel by arrangement spacing, the two ends of each wirerope are all made of
Anchor beam (15), adjusting yoke (16), connecting rod (17), rope card (26) are formed by connecting；Wherein, each steel wire of cat road carrying rope (23)
The rope end of rope is fixed through rope card (6) and adjusting yoke (16), and then adjusting yoke (16) other end is connect with anchor beam (15), then
The fixed connecting rod (17) on anchor beam (15), the i.e. group pair of completion cat road carrying rope (23) one end；Equally according to said method complete this
The group pair of cat road carrying rope (23) other end；Then the group pair at other roads Zu Mao carrying rope (23) both ends is completed again；The cat road
The connecting rod (17) on the both ends anchor beam (15) of rope (23) is carried for holding respectively with cat road carrying rope upper fixed seat (4) and cat road
Anchorage (3) under rope is carried to connect；
Step 3: applying rope in the air:
Cat road carrying rope (23) that assembling finishes is transported to below king-tower (9) with towboat (20), is separately connected cat with hoist cable (18)
Road carries at anchor beam (15) center at rope (23) both ends, with the hoist cable (18) of crane hook (22) fixed bridge bank end anchor beam (15),
It is promoted at crane hook (22) to suspention sport car (11), hoist cable (18) is moved in suspention sport car (11), then crane hook
(22) back hook, connection cat road carry at the hoist cable (18) on rope (23) other end anchor beam (15), slowly promote crane hook (22),
The road Shi Mao carrying rope (23) is gradually promoted, and in suspention sport car (11) and tower crane (8) to carrying off, cat road carries rope (23) and gradually takes off
From towboat (20), crane hook (22) are continued to lift up, so that anchor beam (15) is moved at cat road carrying rope upper fixed seat (2), so
The connecting rod (17) on anchor beam (15) is fixedly connected with cat road carrying rope upper fixed seat (2) afterwards, completes cat road carrying rope (23)
King-tower is fixed at (9)；Angle mill hoist engine (10) is started, sport car (11) is suspended in midair and is moved under the drive of traction rope (12) towards bridge bank end
Dynamic, under the action of suspending the tractive force and suspention sport car (11) sliding force of sport car (11) in midair, cat road carries rope (23) lower end anchor beam
(15) be moved under the cat road carrying rope of scattered cable saddle basic (25) at anchorage (3), by anchor beam (15) connecting rod (17) with
Anchorage (3) is fixedly connected under cat road carrying rope, completes to fix at the scattered cable saddle of cat road carrying rope (23)；Similarly with the above laying side
Method completes the laying work of other cat roads carrying rope (23)；
Step 4: cat road carrying rope adjustment:
In order to guarantee the balance of king-tower (9) horizontal force, upstream and downstream and the road across Duan Mao carrying rope (23) should all terminate in place,
And linear to cat road carrying rope (23) at any time during the adjustment and king-tower (9) displacement is monitored；
Cat road carries rope (23) should carry out live adjustment according to its sky cable absolute altitude, to guarantee cat road carrying rope (23) line style and main push-towing rope
(14) unloaded line style is almost the same；Chain block (19) are set between anchor beam (15) and adjusting yoke (16), by pulling calabash
Reed (19) cooperates adjusting yoke (16), completes the adjustment of tightness of steel wire rope state, keeps every steel wire rope tension consistent, cat road carries rope
(23) wirerope adjustment is carried out by the way of pulling by root.
2. a kind of laying method of self-anchored suspension bridge construction cat road carrying rope according to claim 1, it is characterized in that:
The road the step 1 Zhong Mao carries anchorage (3) and suspention carrying rope upper fixed seat under rope upper fixed seat (4), cat road carrying rope
(2), anchorage (1) is all made of length 1000mm under suspention carrying rope, and specification is made of the rail of QU80, in rail one end web of the rail
The through-hole that diameter is 62mm is opened up at the center 90mm, by aperture end towards outside when rail is embedded, anchorage depth, angle combine construction
Field condition determines that stress load presses maximum cat road carrying rope (23), suspention carrying rope respectively with 3D simulation and Force Calculation
(13) 3 times of safety coefficients of load are calculated on.
3. a kind of laying method of self-anchored suspension bridge construction cat road carrying rope according to claim 2, it is characterized in that:
One end is connection wire rod and the long 600mm of thread, the other end are for the step 2 adjusting yoke (16) and connecting rod (17)
The body of rod bends to annulus closing form, and bending internal diameter is 100mm, and adjusting yoke (16) diameter is 42mm, the equal 800mm of length, connects
Extension bar (17) diameter is 60mm, the equal 1000mm of length；
The 20# I-shaped steel part that the anchor beam (15) is two pieces length 3800mm forms, and I-steel is by length direction and by two works
Word steel between the two away from being arranged for 65mm mode, and is symmetrical with I-steel length direction center line by web is parallel, wing plate is concordant
Line, the distance centered on equidistant 450mm is pressed on the wing plate surface of wherein side, being welded with 8 pieces of centers and opening up diameter is 45mm through-hole,
Outer dimension is 150mm × 150mm, and the backing plate of thickness 40mm, pressing 2200mm on its another side wing surface is spacing, is welded with 2
It is 62mm through-hole that block center, which opens up diameter, and outer dimension is 150mm × 150mm, and the backing plate of thickness 40mm welds two I-steel
Fixation forms anchor beam (15)；
The road Liang Zumao carrying rope (23) is arranged under a piece main rope of suspension bridge (14) and is to be arranged symmetrically with king-tower (9), every road Zu Mao
Wirerope one end of carrying rope (23) is folded to wirerope after passing through adjusting yoke (16) closed circle backward and puts down along its length
Row overlapping 1000mm, blocks (26) with 6 ropes, rope end and wirerope is fixed together every 100mm, then will be installed with wirerope
8 adjusting yoke (16) screw rod ends, be welded with from the length direction of anchor beam (15) in the gap of the wing plate opposite side of 8 pieces of backing plates,
It is attached respectively parallel across backing plate central through hole and with nut and anchor beam (15), the nut of adjusting yoke (16) should be located at this time
In maximal regulated position；The screw rod end of connecting rod (17) is then welded with to the wing plate of 8 pieces of backing plates from the length direction of anchor beam (15)
In the intermediate space of side, two connecting rods (17) are arranged from the other side of anchor beam (15) respectively two pieces of backing plate central through holes
It is pierced by, and connecting rod (17) and anchor beam (15) is realized with nut and are connected, the above group pair for completing cat road carrying rope (23) one end,
Equally according to said method complete the group pair of this cat road carrying rope (23) other end.
4. a kind of laying method of self-anchored suspension bridge construction cat road carrying rope according to claim 3, it is characterized in that:
The step 3 passes through the annulus of cat road carrying rope upper fixed seat (4) through-hole and connecting rod (17) with pin shaft (21), completes cat road
It is fixed at carrying rope (23) king-tower (9)；Equally anchorage (3) through-hole and connecting rod under cat road carrying rope are passed through with pin shaft (21)
(17) annulus is completed to fix at the scattered cable saddle of cat road carrying rope (23).
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| CN108643057B (en) * | 2018-06-20 | 2019-08-20 | 大连理工大学 | A kind of interim anchor cable in girder of suspension bridge erection process balances construction method |
| CN109554968B (en) * | 2019-01-14 | 2024-02-20 | 中国十七冶集团有限公司 | Device for laying carrier cable of aerial cableway and construction method thereof |
| CN109914258B (en) * | 2019-04-08 | 2024-01-23 | 中国铁建大桥工程局集团有限公司 | Self-anchored suspension bridge catwalk bearing cable steering structure |
| CN110438880B (en) * | 2019-08-21 | 2021-04-20 | 中国水利水电第八工程局有限公司 | Construction method and construction system for erecting cat track cable of large-span suspension bridge |
| CN110761196A (en) * | 2019-11-06 | 2020-02-07 | 中国葛洲坝集团第二工程有限公司 | Adjustable catwalk anchoring and connecting device |
| CN112195784B (en) * | 2020-09-15 | 2022-06-17 | 中交第二公路工程局有限公司 | Catwalk sag adjustment system and adjustment method for erecting main cable by adopting air spinning method |
| CN117776001B (en) * | 2024-02-26 | 2024-05-03 | 贵州省公路工程集团有限公司 | Suspension bridge pin joint type sling lifting system and installation method |
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| JPS6429507A (en) * | 1987-07-24 | 1989-01-31 | Ishikawajima Harima Heavy Ind | Method of supporting catwalk for suspension bridge cable erection in method of air spinning construction |
| CN101514543B (en) * | 2009-03-16 | 2011-07-20 | 中交第二公路工程局有限公司 | Mobile trolley used for erecting and removing surface of construction catwalk of suspension bridge |
| CN102021887A (en) * | 2010-09-16 | 2011-04-20 | 长沙理工大学 | Suspender tensioning method of double-tower single-span self-anchored suspension bridge with high-cross dip and spatial cable |
| CN201952738U (en) * | 2011-01-30 | 2011-08-31 | 中交三航局第三工程有限公司 | Catwalk suitable for self-anchored double-cable-plane suspension bridge |
| CN102392418A (en) * | 2011-12-01 | 2012-03-28 | 中交二公局第二工程有限公司 | Span-division erection construction method of construction catwalk of multi-tower suspension bridge |
| CN205329550U (en) * | 2015-12-15 | 2016-06-22 | 中交一公局第三工程有限公司 | Suspension bridge catwalk system |
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