CN110241736A - Suspension cable Fast Installation construction method - Google Patents
Suspension cable Fast Installation construction method Download PDFInfo
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- CN110241736A CN110241736A CN201910522408.8A CN201910522408A CN110241736A CN 110241736 A CN110241736 A CN 110241736A CN 201910522408 A CN201910522408 A CN 201910522408A CN 110241736 A CN110241736 A CN 110241736A
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- tensioning
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- suspension
- tower
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- 239000000725 suspension Substances 0.000 title claims abstract description 270
- 238000009434 installation Methods 0.000 title claims abstract description 63
- 238000010276 construction Methods 0.000 title claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims description 39
- 239000010959 steel Substances 0.000 claims description 39
- 238000004873 anchoring Methods 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of suspension cable Fast Installation construction methods, and the method comprising the steps of: placing the suspension cable coiled in advance in mounted beam section top surface；The tower end anchor head of the suspension cable is lifted by crane, the top half of the suspension cable is unfolded, and the installation of tower end is carried out to the suspension cable；The beam-ends anchor head of the suspension cable is drawn, the lower half portion of the suspension cable is unfolded, and beam-ends installation is carried out to the suspension cable；The tower end of suspension cable described in tensioning, to complete the installation of suspension cable described in single.Suspension cable Fast Installation construction method of the invention has the advantages that guarantee to shorten the construction period under the premise of construction quality.
Description
Technical field
This specification is related to bridge parts construction method, and in particular to suspension cable Fast Installation construction method.
Background technique
The installation of suspension cable is the important component in bridge installation, is influenced by landform and environmental factor,
The installation of suspension cable also has certain difference.In large bridge construction, the length of single suspension cable is up to hundreds of meters, weight
Measure up to tens of tons, and if environment it is dangerous, the height of water is big, brings very big difficulty, especially suspension cable to the construction of bridge
Installation, difficulty increase, it is longer so as to cause the duration of construction.Therefore, in the prior art, in order to guarantee complicated landform ring
Construction quality under the big environment of bridge construction quality and water level temperature change under border, often suspension cable installs tensioning
It completes, then carries out the installation of next section beam section, the method that beam section is constructed one by one in this way, the influence of fluctuations by water level is big, from
And be unfavorable for accelerating construction progress, thus the construction period is long.
Summary of the invention
This specification is directed to the shortcomings that existing way, proposes suspension cable Fast Installation construction method, has and guarantees engineering matter
The advantages of being shortened the construction period under the premise of amount.
The one side of this specification provides a kind of suspension cable Fast Installation construction method, comprising steps of
The suspension cable coiled in advance is placed in mounted beam section top surface；
Lift by crane the tower end anchor head of the suspension cable, to be unfolded the top half of the suspension cable, and to the suspension cable into
The installation of row tower end；
Draw the beam-ends anchor head of the suspension cable, to be unfolded the lower half portion of the suspension cable, and to the suspension cable into
The installation of cross girders end；
The tower end of suspension cable described in tensioning, to complete the installation of suspension cable described in single.
The suspension cable Fast Installation construction method of this specification passes through the installation anchoring of tower end and beam-ends installation to suspension cable
Anchoring, and by carrying out tensioning to suspension cable from tower end, first beam-ends is anchored so that the beam-ends and beam section of suspension cable are solid
It is fixed tight, so that the fixation of beam section and suspension cable fastens enough；And the load in beam section can change with installation progress,
The device placed in beam section can also change, and carrying out tensioning to suspension cable from tower end can be more convenient after suspension cable beam-ends is fixed
Adjustment suspension cable Suo Li, suspension cable is conveniently anchored on girder and Sarasota, one by one inclined guy cable stretching, and by
One fixed interim beam section, so as to shorten installation period.
Further, the tower end of suspension cable described in the tensioning, the tower end including suspension cable described in first time tensioning, bridge floor
Loop wheel machine is advanced to the tower end of suspension cable described in next beam section and second of tensioning.Suspension cable is completed into the anchoring of tower end and beam
After the anchoring of end, two times tensioning is carried out to suspension cable from tower end, the Suo Ligeng of inclined guy cable stretching beam section is enabled to meet design
Value, it is ensured that it is firm after beam section installation, to ensure that the girder of cable-stayed bridge is firm, to improve the stability of strutting system of cable-stayed bridge.
Further, in the first time tensioning and/or second of the tensioning, same king-post and equidistant with king-post
Suspension cable synchronizes tensioning.In further scheme, the balance of collateral security cable-stayed bridge and the mode of symmetrical tensioning consider,
Synchronous tension suspension cable can be readily achieved tensioning, shorten the construction period.The suspension cable of synchronous tension herein, can be rope
Tower it is ipsilateral, be also possible to the heteropleural of Sarasota.
Further, the tower end of suspension cable described in second of the tensioning includes: to have pacified according to after erection crane Forward
Perhaps previous section has installed the construction error of beam section or the construction error of the first time tensioning to the load of dress beam section, in tower
End carries out corresponding adjustment to the elongation of the suspension cable, to adjust beam-ends absolute altitude and the torsion of bridge main beam of the suspension cable
Turn.The tensioning of second of suspension cable is carried out, is on the one hand the adjustment carried out in conjunction with the case where first time tensioning, is on the other hand knot
The adjustment that difference when closing synchronous tension carries out, thus preferably guarantee that design Suo Li can be met when every skew cables are fixed,
Meet design requirement.
Further, described to place the suspension cable coiled in advance in mounted beam section top surface, comprising: by the oblique of coiling
Drag-line is placed on Suo Jishang, gradually spreads out the suspension cable and is placed on spaced multiple supporting carriages.In order to protect
The protective layer and suspension cable ontology for protecting suspension cable are placed under suspension cable by the way that supporting carriage is arranged, and are spaced setting and are come
It realizes；And supporting carriage is set and can be avoided the contact of suspension cable with beam section or bridge floor, reduce friction, prevents abrasion oblique pull
The protective layer of rope lifts or expansion is more convenient.During bridge floor opens up rope, the dragging and promotion of suspension cable may relate to, in order to
Guarantee the complete and protection effect of suspension cable, the protection during exhibition rope just seems particularly significant.
Further, the tower end anchor head of the lifting suspension cable includes: the tower end anchor head in the suspension cable
Place's installation lifting cord clip, promotes the lifting cord clip by hanging apparatus, so that tower end anchor head is promoted on Sarasota and corresponds to steel
At anchor beam.In the hoisting process to suspension cable, by lifting cord clip in the end of suspension cable or the installation of end neighbouring position,
By vertically lifting cord clip to lift the one end for promoting suspension cable, the installation of tower end and tensioning are carried out to suspension cable to facilitate.
Further, described to include: to suspension cable progress tower end installation
The suspension cable is located at the steel anchor beam of the guidance of the end at Sarasota on Sarasota；
After the suspension cable end passes through embedded steel tube, anchoring temporarily is carried out at tower end to the suspension cable, is then removed
The lifting cord clip on the suspension cable；
After the suspension cable completes the anchoring temporarily at tower end, continue the suspension cable that Suo Jishang is put described in expansion, until
The suspension cable, which is fully deployed and is detached from, described puts rope machine；
Jack and tensioning bar assembly are installed in the Sarasota, with suspension cable described in tensioning.The end of suspension cable passes through
After steel anchor beam, anchoring temporarily is carried out to suspension cable and removes lifting cord clip, the tower end anchoring temporarily of suspension cable, for oblique pull
The first time tensioning of rope is prepared, convenient also for providing to the cable force adjustment after the tower end tensioning of suspension cable；Suspension cable
One end can consolidate fixation, other end anchoring temporarily, to facilitate the tension operation to suspension cable.
Further, described that the suspension cable is located at the steel anchor beam packet of the guidance of the end at Sarasota on Sarasota
It includes:
By steel anchor beam described in steel wire penetrating and the end that is located at Sarasota with the suspension cable is connect, and is lifted and is promoted institute
State lifting cord clip；
By drawing the movable end of the wirerope, reached at the steel anchor beam with drawing the end of the suspension cable；
Continue to lift up the suspension cable, and with draw the wirerope cooperating so that the end of the suspension cable is passed through
Wear the steel anchor beam.It guides suspension cable to run through steel anchor beam by wirerope, and in bootup process, suspension cable is lifted by crane
And promotion facilitates the lifting and anchoring of suspension cable to carry out vertical and lateral adjustment operation.In addition, grasping for convenience
Make, when lifting suspension cable, lifting cord clip is clamped at a certain distance from suspension cable end, so that the end of suspension cable and lifting
Cord clip has a distance that can also lift to suspension cable in this way when guiding suspension cable to enter steel anchor beam.
Further, the beam-ends anchor head of the traction suspension cable, and beam-ends installation is carried out to the suspension cable and includes:
The suspension cable be located at installed at beam section end installation traction cord clip, and by after steel wire penetrating cable guide pipe with hauling rope
Folder connection, draws the wirerope, so that the traction cord clip is involved from the cable guide pipe；And the suspension cable is anchored at
Beam section is installed.Before inclined guy cable stretching, need to carry out suspension cable to open up rope and beam anchor.The process of exhibition rope is oblique by drawing
The beam-ends end of drag-line, and draw always to beam section to be installed, to facilitate anchoring.Hauling rope folder is fixed on suspension cable
On beam-ends end, the solid exhibition rope to draw suspension cable, and steel wire penetrating cable guide pipe are clamped by wirerope and hauling rope,
To run through suspension cable from cable guide pipe, to facilitate anchoring.By exhibition rope to suspension cable and beam anchor, oblique pull is facilitated
The tensioning of rope.
Further, described that the suspension cable is anchored to have installed beam section include: to promote the beam-ends anchor head, by beam-ends
Anchor head passes through anchor tie plate and installs bolt-nut.By promoting beam-ends anchor head, exhibition rope and the traction of beam-ends can be facilitated.
The additional aspect of this specification and advantage will be set forth in part in the description, these will from the following description
Become obvious, or is recognized by the practice of this specification.
Detailed description of the invention
This specification is above-mentioned and/or additional aspect and advantage, from the following description of the accompanying drawings of embodiments will
Become obvious and be readily appreciated that, in which:
Fig. 1 is a kind of flow chart of steps of suspension cable Fast Installation construction method；
Fig. 2 is the structural schematic diagram for putting a kind of embodiment of rope machine；
Fig. 3 is a kind of structural schematic diagram of embodiment of supporting carriage；
Fig. 4 is the structural schematic diagram for lifting a kind of embodiment of cord clip；
Fig. 5 is the structural schematic diagram for drawing a kind of embodiment of cord clip.
Specific embodiment
This specification is described below in detail, the example of the embodiment of this specification is shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar component or component with the same or similar functions.In addition, if known
The detailed description of technology is characterized in this specification shown unnecessary, then omits it.Below with reference to attached drawing
The embodiment of description is exemplary, and is only used for explaining this specification, and cannot be construed to the limitation to this specification.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in this specification fields.
How the technical solution of this specification and the technical solution of this specification are solved with specifically embodiment below
Above-mentioned technical problem is described in detail.
Please refer to a kind of flow chart of embodiment of the suspension cable Fast Installation construction method of Fig. 1.One kind of this specification
Suspension cable Fast Installation construction method, comprising steps of
S11, the suspension cable coiled in advance is placed in mounted beam section top surface.
In order to facilitate the exhibition rope of suspension cable, and suspension cable is protected, it is in a preferred embodiment, described to install
Beam section top surface place the suspension cable that coils in advance, comprising: the suspension cable of coiling is placed on Suo Jishang, is gradually spread out described
Suspension cable is simultaneously placed on spaced multiple supporting carriages.
Refering to a kind of structural schematic diagram of the embodiment for putting rope machine of Fig. 2.Putting rope machine 20 includes rope disk 21, bracket 22, rolling
23 and brake apparatus 24 are taken turns, is provided through shaft 25 at the central axes of the rope disk 21,25 both ends of shaft are respectively supported at
On the bracket 22, the brake apparatus 24, the outside wall surface of idler wheel 23 and the outer wall face contact of rope disk 21, rolling are arranged in shaft 25
Wheel 23 is mounted on the pedestal of the bracket 22 by 23 bracket 22 of idler wheel, and rope disk 21 rotates and then idler wheel 23 is driven to rotate, rope
Disk 21 is rotated relative to bracket 22 together with shaft 25.Rope disk 21 include cylinder (not shown), the first limit plate (not shown) with
And second limit plate (not shown), first limit plate and the second limit plate are separately fixed at the both ends of the surface of cylinder, so that right
The limit of rope is wound on cylinder.The shaft 25 runs through the central axes of cylinder.Wherein, brake apparatus 24, which can be, has control
The motor of adjustment effect.When work, the rope machine 20 of putting of preset suspension cable is placed in mounted beam section, is coiled in rope in advance
Suspension cable one end on disk 21 is drawn, and then suspension cable gradually spreads out and is placed in mounted beam section, and suspension cable opens up rope
During, rope disk 21 is driven rotation, and while rope disk 21 rotates, idler wheel 23 is driven rotation.
During above-mentioned suspension cable exhibition rope, suspension cable is placed and is fastened on supporting carriage 50.Referring to Fig. 3, it is
A kind of structural schematic diagram of embodiment of supporting carriage.In a preferred embodiment, supporting carriage 50 includes branch supporting plate
51 and four uniformly distributed rotating wheels 52 in 51 side of branch supporting plate.Under working condition, suspension cable is placed on supporting carriage 50
On, and be fastened on the branch supporting plate 51 of supporting carriage 50 by binding.In another preferred embodiment, on branch supporting plate 51
Multiple link blocks 53 are provided with, to facilitate binding suspension cable.Wherein, small every a distance one bearing of setting on suspension cable
On the one hand vehicle is used to support suspension cable, prevent suspension cable from touching the surface of beam section；On the other hand, convenient to open up rope in suspension cable
When reduce friction, facilitate exhibition rope.
The tower end anchor head of S12, the lifting suspension cable, the top half of the suspension cable is unfolded, and to the oblique pull
The installation of Suo Jinhang tower end.In one implementation, by hanging device and support platform, the suspender of hanging device is connected to
It lifts on cord clip, then suspension cable is lifted.While lifting suspension cable, also can exhibition rope to the suspension cable of coiling, with side
Just suspension cable is installed from tower end.
Subsequent tensioning or the anchoring of suspension cable for convenience, in a preferred embodiment, the lifting oblique pull
The tower end anchor head of rope includes: the installation lifting cord clip at the tower end anchor head of the suspension cable, and being promoted by hanging apparatus should
Cord clip is lifted, so that tower end anchor head is promoted on Sarasota and corresponds at steel anchor beam.
It is the structural schematic diagram of the lifting cord clip 30 in one embodiment refering to Fig. 4.Lifting cord clip 30 is plate, edge
Length direction be formed with section be arc limiting groove M3, lift cord clip 30 on offer hole for hoist M1, along its length on
Multiple aperture M2 are offered positioned at the two sides of limiting groove M3, are provided in the width direction and positioned at the surface of lifting cord clip multiple
Rubber pad 31, and the rubber pad 31 is at least laid on limiting groove M3；Even rubber pad 31 extends to the plate for lifting cord clip
Face.Under working condition, in one embodiment, suspension cable placement is contained in limiting groove M3, and passes through the side of binding
Formula, wound and bound rope pass through aperture M2, then by suspension cable and lifting cord clip fastening, pass through rubber pad between suspension cable and lifting cord clip
It separates, protection suspension cable is injury-free.When lifting, it connect to promote suspension cable with hole for hoist M1.Another real
It applies in mode, suspension cable is placed in limiting groove M3, and two lifting cord clips fasten, and by rope or is bolted two
Then a corresponding aperture M2 lifts suspension cable by connection hole for hoist so that two lifting cord clips be fastened.
After the lifting for completing suspension cable prepares and lifts by crane, so that it may carry out tower end to suspension cable and fix.In order to better
The firm tower end to suspension cable anchors, and facilitates subsequent operation, in a preferred embodiment, described to carry out tower to the suspension cable
It installs at end
The suspension cable is located at the steel anchor beam of the guidance of the end at Sarasota on Sarasota；
After the suspension cable end passes through embedded steel tube, anchoring temporarily is carried out at tower end to the suspension cable, is then removed
The lifting cord clip on the suspension cable；
After the suspension cable completes the anchoring temporarily at tower end, continue the suspension cable that Suo Jishang is put described in expansion, until
The suspension cable, which is fully deployed and is detached from, described puts rope machine；
Jack and tensioning bar assembly are installed in the Sarasota, with suspension cable described in tensioning.
When the tower end installation of suspension cable, the rack winch haulage cable being arranged by tower top, and pass through lifting system
System, which is hung, lifts cord clip, specifically, is lifted by the hanging device of Lift-on/Lift-off System to suspension cable, the hanging device
Including at least the rack winch and haulage cable of lifting, haulage cable rotation is driven by rack winch, thus
It is able to ascend suspension cable.In one embodiment, lifting cord clip is clamped in from a certain distance from suspension cable beam-ends end, or
It is clamped in the middle part of suspension cable, and the beam-ends end of suspension cable is fastenedly connected with haulage cable, traction steel wire wire saws are simultaneously adjusted
The horizontal movement of whole suspension cable end, the lifting hoist engine in tackling system are promoted and are adjusted indulging for suspension cable end by rope
To movement, to running through suspension cable into steel anchor beam.In one embodiment, suspension cable runs through the embedded steel tube of steel anchor beam.Into
And suspension cable is anchored with tower end, the tower end for just tentatively completing suspension cable at this time is fixed.
It is in a preferred embodiment, described to be located at the suspension cable in order to more accurately operate the anchoring of suspension cable
The steel anchor beam of the end guidance on the Sarasota at Sarasota include:
By steel anchor beam described in steel wire penetrating and the end that is located at Sarasota with the suspension cable is connect, and is lifted and is promoted institute
State lifting cord clip；
By drawing the movable end of the wirerope, reached at the steel anchor beam with drawing the end of the suspension cable；
Continue to lift up the suspension cable, and with draw the wirerope cooperating so that the end of the suspension cable is passed through
Wear the steel anchor beam.
When tower end draw and run through Sarasota to suspension cable, using continous way jack pair inclined guy cable stretching, and lead to
Cross oil pump pressurization, connection structure is connected and fixed suspension cable, connected by the tower end anchor head of wirerope or steel strand wires to suspension cable
It connects, to complete traction and tensioning.Wherein, continous way jack is mounted on Sarasota, wirerope or steel strand wires and tower top
Hoist engine connection.
The beam-ends anchor head of S13, the traction suspension cable, the lower half portion of the suspension cable is unfolded, and to the oblique pull
The installation of Suo Jinhang beam-ends.After the tower end of completion suspension cable is fixed, beam-ends fastening is carried out to suspension cable, exhibition can be conveniently accomplished
Rope can also facilitate the Suo Li for adjusting suspension cable.
In order to which suspension cable is preferably carried out beam anchor, in a preferred embodiment, the traction suspension cable
Beam-ends anchor head, and carrying out beam-ends installation to the suspension cable includes: to be located to have installed end at beam section in the suspension cable
Installation traction cord clip, and will be connect after steel wire penetrating cable guide pipe with traction cord clip, the wirerope is drawn, so that the traction
Cord clip is involved from the cable guide pipe；And the suspension cable is anchored at, beam section has been installed.
Refering to Fig. 5, for a kind of structural schematic diagram of embodiment of traction cord clip；Traction cord clip 40 is symmetrical plate knot
Structure, symmetry axis are arranged along its length, and limiting slot N3 is formed at symmetry axis, offer multiple connecting holes along limiting slot two sides
N2, and at least two towing pad N1 are offered in plate face, it is provided with multiple rubber pads 41 in the width direction, rubber pad 41 is at least
Limiting slot is covered, to provide protective effect when suspension cable is contacted with limiting slot N3 to suspension cable.Connecting hole N2 can use rope
Suspension cable is passed through and bound, the traction cord clip 40 of two fastenings can also be bolted.Towing pad N1 for draw or
Lifting traction cord clip, thus expansion or promotion suspension cable.
The case where due to lifting or traction, is different, and in one embodiment, there are frameworks for lifting cord clip and traction cord clip
On difference, it is found that when vertical lifting operation, there are vertical and lateral adjustment, are mainly to provide upwards by comparison diagram 4 and Fig. 5
Castering action power, downward active force by suspension cable self gravity provide, even if so lifting cord clip only open up a lifting
Hole is also able to satisfy construction demand；And drawing cord clip is the use in horizontally tracting in beam section, the direction of stress is different, horizontal operation
When lateral adjustment generally require lateral both direction power cooperation, and cannot be that the power in the upper direction of transverse direction has been come
At, therefore, draw cord clip on generally require to open up two towing pads.Moreover, two towing pads are preferably provided with traction respectively
The two sides along axis of the plate body of cord clip.
In order to preferably carry out beam-ends installation to suspension cable, beam-ends mounting platform is additionally provided, which is
One steel frame construction being welded, the steel frame construction provide top surface support platform and it is multiple for construction personnel stand or make
The support rod of industry, is additionally provided with fence, facilitates the anchoring in beam section and the operation of anchor tie plate.
It is described that the suspension cable is anchored to have installed beam section include: to promote the beam-ends anchor head, beam-ends anchor head is passed through
Anchor tie plate simultaneously installs bolt-nut.
The tower end of suspension cable described in S14, tensioning, to complete the installation of suspension cable described in single.Load in beam section can be with
Installation progress and change, the device placed in beam section can also change, from tower end to suspension cable carry out tensioning, suspension cable beam
After end is fixed, the Suo Li of suspension cable can be more conveniently adjusted, suspension cable jail is enabled to be conveniently anchored at girder and Sarasota
On, inclined guy cable stretching one by one, and interim beam section is fixed one by one, so as to shorten installation period.In addition, passing through tower end tensioning oblique pull
Rope, the adjustment convenient transportation of tensioning equipment, after the complete skew cables of tensioning, it is only necessary to vertically movable tensioning equipment, tensioning equipment
Including such as jack and support foot etc., shortening can also be played with installation is adjusted when the tower end of suspension cable anchors
The effect of construction period.By the fixation to beam-ends, tensioning suspension cable in tower end can either guarantee the rope during stayed Cable Construction
Suo Li after the completion of power, and construction meets design value, and cable force adjustment is convenient；It can also ensure that the construction period contracting of suspension cable
It is short.
In order to improve the effect of tensioning, guarantee that tensioning reaches design requirement, in a preferred embodiment, the tensioning institute
The tower end for stating suspension cable, the tower end including suspension cable described in first time tensioning, erection crane are advanced to next beam section, Yi Ji
The tower end of suspension cable described in two times tensioning.
In order to improve construction efficiency, the adjustment in tensioning is reduced, is further related in a preferred embodiment, described first
In secondary tensioning and/or second of the tensioning, the same king-post and suspension cable equidistant with king-post synchronizes tensioning.
In order to which preferably second of tensioning is accurately controlled and adjusted, so that the beam section connection after tensioning is more firm, one
It is further related in a preferred embodiment, the tower end of suspension cable described in second of the tensioning includes: after being moved forward according to erection crane
Having installed the load of beam section, perhaps previous section has installed the construction error of beam section or the construction error of the first time tensioning,
At tower end, the elongation to the suspension cable carries out corresponding adjustment, to adjust the beam-ends absolute altitude and bridge main beam of the suspension cable
Torsion.
After the anchoring of tower end and beam anchor of suspension cable, the requirement according to design is needed, with Roadway Construction load
The needs of variation and bridge floor hypogene geologic action carry out tensioning and cable force adjustment to suspension cable.Sarasota end install tensioning support foot with
Support jack carries out the tensioning of tower end by jack pair suspension cable, and Suo Liji is arranged between jack and suspension cable, with
Just the Suo Li situation of suspension cable is understood at any time.After completing first time tensioning, the load and stay cable force of bridge floor can become
Change, can eliminate this variation bring by second of tensioning influences, and guarantees that the Suo Li of suspension cable and pulled out condition meet and sets
Meter requires.
The suspension cable Fast Installation construction method of this specification can guarantee the accuracy of suspension cable installation, can protect
While demonstrate,proving stayed Cable Construction precision, shorten construction period, guarantees construction efficiency and construction quality.The installation of entire suspension cable
Cheng Zhong, the guarantee that the exoperidium of suspension cable is as big as possible is intact, ensure that quality when suspension cable stretches；The exhibition rope of suspension cable is fast
Victory is convenient, even if having installed the length of beam section or to have spliced bridge length limited, can still guarantee good exhibition Suo Xiaoguo.
Under the fine status for guaranteeing suspension cable, additionally it is possible to guarantee the smooth and quick of suspension cable exhibition rope, so that construction efficiency is improved,
Also ensure the drawing effect of suspension cable.
In the description of this specification, it is to be understood that term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description this specification and simplifies description, rather than the device of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to this specification
System.In the description of this specification, unless otherwise indicated, the meaning of " plurality " is two or two or more.
The above is only some embodiments of this specification, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from this specification principle, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the protection scope of this specification.
Claims (10)
1. a kind of suspension cable Fast Installation construction method, which is characterized in that comprising steps of
The suspension cable coiled in advance is placed in mounted beam section top surface；
The tower end anchor head of the suspension cable is lifted by crane, the top half of the suspension cable is unfolded, and tower is carried out to the suspension cable
End installation；
The beam-ends anchor head of the suspension cable is drawn, the lower half portion of the suspension cable is unfolded, and beam is carried out to the suspension cable
End installation；
The tower end of suspension cable described in tensioning, to complete the installation of suspension cable described in single.
2. suspension cable Fast Installation construction method according to claim 1, it is characterised in that: suspension cable described in the tensioning
Tower end, after the tower end including suspension cable described in first time tensioning, erection crane is advanced to next beam section, subsequent to carry out the
The tower end of suspension cable described in two times tensioning.
3. suspension cable Fast Installation construction method according to claim 2, it is characterised in that: in the first time tensioning
And/or in second of the tensioning, the same king-post and suspension cable equidistant with king-post synchronizes tensioning.
4. suspension cable Fast Installation construction method according to claim 2, it is characterised in that: described in second of the tensioning
The tower end of suspension cable includes: to have installed the load of beam section or previous section has installed beam section according to after erection crane Forward
Construction error or the construction error of the first time tensioning, at tower end, the elongation to the suspension cable carries out corresponding adjustment,
To adjust beam-ends absolute altitude and the torsion of bridge main beam of the suspension cable.
5. suspension cable Fast Installation construction method according to claim 1-4, which is characterized in that described to pacify
Place the suspension cable coiled in advance in the beam section top surface installed, comprising: the suspension cable of coiling is placed on Suo Jishang, is gradually spread out
The suspension cable is simultaneously placed on spaced multiple supporting carriages.
6. suspension cable Fast Installation construction method according to claim 5, which is characterized in that the lifting suspension cable
Tower end anchor head include: at the tower end anchor head of the suspension cable installation lifting cord clip, this is promoted by hanging apparatus and is hung
Cord clip is filled, so that tower end anchor head is promoted on Sarasota and corresponds at steel anchor beam.
7. suspension cable Fast Installation construction method according to claim 6, which is characterized in that it is described to the suspension cable into
It installs at row tower end
The suspension cable is located at the steel anchor beam of the guidance of the end at Sarasota on Sarasota；
After the suspension cable end passes through embedded steel tube, anchoring temporarily is carried out at tower end to the suspension cable, then described in dismounting
The lifting cord clip on suspension cable；
After the suspension cable completes the anchoring temporarily at tower end, continue the suspension cable that Suo Jishang is put described in expansion, until described
Suspension cable, which is fully deployed and is detached from, described puts rope machine；
Jack and tensioning bar assembly are installed in the Sarasota, with suspension cable described in tensioning.
8. suspension cable Fast Installation construction method according to claim 7, which is characterized in that described by the suspension cable position
The steel anchor beam of the end guidance on the Sarasota at Sarasota include:
By steel anchor beam described in steel wire penetrating and the end that is located at Sarasota with the suspension cable is connect, and is lifted and is promoted described hang
Fill cord clip；
By drawing the movable end of the wirerope, reached at the steel anchor beam with drawing the end of the suspension cable；
Continue to lift up the suspension cable, and with draw the wirerope cooperating so that institute is run through in the end of the suspension cable
State steel anchor beam.
9. suspension cable Fast Installation construction method according to claim 5, which is characterized in that the traction suspension cable
Beam-ends anchor head, and carrying out beam-ends installation to the suspension cable includes: to be located to have installed end at beam section in the suspension cable
Installation traction cord clip, and will be connect after steel wire penetrating cable guide pipe with traction cord clip, the wirerope is drawn, so that the traction
Cord clip is involved from the cable guide pipe；And the suspension cable is anchored at, beam section has been installed.
10. suspension cable Fast Installation construction method according to claim 9, which is characterized in that described by the suspension cable
Being anchored at and having installed beam section includes: to promote the beam-ends anchor head, and beam-ends anchor head is passed through anchor tie plate and installs bolt-nut.
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| CN201910522408.8A CN110241736A (en) | 2019-06-17 | 2019-06-17 | Suspension cable Fast Installation construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364363A (en) * | 2020-03-17 | 2020-07-03 | 山西四建集团有限公司 | Stay cable construction tensioning method |
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Application publication date: 20190917 |