CN109537476A - The double interim rope self-balancings of pin ear formula pull formula suspension bridge sling replacing underpinning device - Google Patents
The double interim rope self-balancings of pin ear formula pull formula suspension bridge sling replacing underpinning device Download PDFInfo
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- CN109537476A CN109537476A CN201811500360.2A CN201811500360A CN109537476A CN 109537476 A CN109537476 A CN 109537476A CN 201811500360 A CN201811500360 A CN 201811500360A CN 109537476 A CN109537476 A CN 109537476A
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- 239000000725 suspension Substances 0.000 title claims abstract description 47
- 238000009424 underpinning Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 13
- 210000002683 foot Anatomy 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 239000011295 pitch Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- 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
Abstract
The invention discloses a kind of double interim rope self-balancings of pin ear formula to pull formula suspension bridge sling replacing underpinning device, belong to civil engineering suspension bridge maintenance and reinforcement field of engineering technology, including permanent cord clip (18), box beam otic placode (16) are provided with below the permanent cord clip (18), the top of permanent rope (17) is connected with the permanent cord clip (18), and the bottom end of the permanent rope (17) is connected with the box beam otic placode (16).A kind of double interim rope self-balancings of pin ear formula provided by the invention pull formula suspension bridge sling replacing underpinning device, in hoist cable replacement, it is zero to remove again that interim cable stretching, which is not needed, to the Suo Li of hoist cable to be replaced, but directly utilize self balancing device, hoist cable to be replaced is pulled using jack, the pin shaft stress zero for making hoist cable to be replaced perturbs small, structure safety to the main push-towing rope of existing suspension bridge, the linear of stiff girder and internal force.
Description
Technical field
The present invention relates to a kind of double interim rope self-balancings of pin ear formula to pull formula suspension bridge sling replacing underpinning device, belongs to soil
Wood engineering suspension bridge maintenance and reinforcement field of engineering technology.
Background technique
Sling of suspension bridge be easiest to be damaged in suspension bridge component, one of the primary structure member of most critical, design life
Only 20 years, and the design period of suspension bridge is generally 100 years or more, therefore during the design life of suspension bridge, hangs
Rope will at least be replaced 4-6 times.
Hoist cable installation when relative to bridge construction, suspension bridge sling replacing is installed without anchor road and hoisting hook during one's term of military service
It is standby to can use, the problems such as facing uninterrupted traffic, high altitude operation, construction faciostenosis, and exist and remove old rope and new rope is installed
Two kinds of constructions, complicated construction technique.If it is bad that the sling of suspension bridge selected underpins system, hold very much in hoist cable replacement work progress
Easily influence Suspension bridge structure linear and internal force, make replacement front and back structural internal force, it is linear that great changes will take place.As it can be seen that suspension cable
The suspender replacement of bridge has the characteristics that big difficulty, complicated construction technique, replacement cost are high.
Although the country has Jiangyin Yangtse River suspension bridge, Fushun Tian Hu self-anchored type Concrete suspension bridge and Shantou Bay Bridge to go out
The case of hoist cable is now replaced, but correlation technique data is still less.Document " the detection of large-span suspension bridge abnormal sound wirerope drop shot rope
And replacement " and patent 1(CN207685669U) disclose Jiangyin Bridge drop shot rope replace device and process, core technology be
Interim rope is arranged in the side of permanent rope, and tensioning makes the Suo Li of permanent rope be reduced to zero, then removes hoist cable.This method uses single-point
Replacement, when interim cable stretching is smaller, there are Suo Li, pin shafts to remove difficult for hoist cable to be replaced；When interim cable force be stretched to
When to hang cable force be zero, the Suo Li of interim rope is very big, and lifting lug otic placode has been surrendered for replacement, is plastically deformed, meanwhile, temporarily
Suo Li great perturbs also greatly main push-towing rope and the linear of stiff girder.Patent 2(CN202214681U) describe the hoist cable of suspension bridge a kind of
More changing device, it installs interim cable stretching device in the side of hoist cable to be replaced, and it is real to arrange that punching load transducer carries out
When monitor.A kind of drop shot rope more changing device is announced, and arranges interim tensioning equipment in the side of interim hoist cable, is made by tensioning
It is to be replaced to hang cable force decline, there is a problem of that same patent 1 is same.Patent 3(CN106480822A) disclose a kind of suspension bridge
How the method that hoist cable replaces system and replaces sling of suspension bridge puts rope after removing this method give old rope or before new rope installation
With the process of hanging cable, how do not give makes the work progress and device to be replaced for hanging cable force zero, and the part lacked is
The core and key content of suspension bridge sling replacing.Document " Shantou Bay Bridge tests hoist cable replacement engineering construction and monitoring " is public
A kind of suspension bridge sling replacing mode of cloth, it is arranged truss in bridge floor first, is supported in adjacent hoist cable crossbeam, utilizes former girder
The hole for hoist being arranged when prefabricated subsection lifting construction lifts by crane beam body in advance.Then, the replacement of hoist cable is carried out in two ways:
One is the anchor bolt spreadings to hoist cable, and upper and lower support frame is arranged in the anchor bolt of anchor slab and spreading, and intermediate arrangement jack drives
Dynamic jack jacks upper lower bracing frame, loosens the nut of former anchor bolt, realizes replacement.Another way is that stiff girder is arranged above and below
Reaction beam unloads hoist cable internal force by jacking upper reaction beam, realizes hoist cable replacement.Unquestionably, this scheme for changing rope is than it
Front case has apparent advantage, and beam body need to only be lifted by crane in advance 400 kN by it, and not have to the Suo Li for making hoist cable to be replaced
It is reduced to zero, so that realizing that and internal force linear to stiffening girder of suspension bridge is dry scratches least target.In order to overcome single-point to hang single-point replacement
When, the excessive problem of interim cable force, Jiangyin Bridge is in nearest hoist cable replacement, using the lifting of five suspension centres replacement one
The scheme of hoist cable is successfully realized the replacement of hoist cable.This method has that operation side is more, on the state of existing bridge influence it is big,
The wide feature of range.
As it can be seen that domestic had deeper research to suspension bridge sling replacing technology.But the present invention relies on Run-yang bridge to hang
There are some news in Suo Genghuan engineering, the hoist cable replacement problem encountered: first is that the steel anchor box otic placode of Run-yang bridge
Construction is different from Jiangyin Bridge and Shantou Bay Bridge, it has reserved two lifting lug holes, and Jiangyin Bridge has only been reserved one and hung
Earhole, Shantou Bay Bridge girder do not set and hang using the prestressed reinforced concrete box beam of single three Room thin-walled fish-bellied type section of case
Otic placode.Second is that the hoist cable form of each seat bridge is different.The hoist cable of Jiangyin Bridge uses wirerope, and both ends are pitched using pin type
Shape otic placode hoist cable, anchor cup is made into vase-shaped；Shantou Bay Bridge then uses straddle-type wire rope sling, and the connection with stiff girder is adopted
With cast-in fixing bolt formula.And the hoist cable of Run-yang bridge uses parallel steel wire, although both ends use pin type fork-shaped otic placode, anchor cup is done
It is conical.In conclusion existing technological means is unable to complete the replacement of the hoist cable of Run-yang bridge, the present invention is sufficiently being studied
On the basis of the construction of the upper and lower anchored end of Run-yang bridge hoist cable, has devised hoist cable replacement and underpin system.
Summary of the invention
The present invention underpins system deficiency for existing suspension bridge sling replacing, in conjunction with the upper and lower anchored end of Run-yang bridge hoist cable
Construction, propose a kind of double interim rope self-balancings of pin ear formula and pull formula suspension bridge sling replacing underpinning device, solve suspension cable
Construction cost is high when bridge crane rope is replaced, influences the problems such as big, work progress is complicated, difficulty is big to bridge structure standing state.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
The double interim rope self-balancings of pin ear formula pull formula suspension bridge sling replacing underpinning device, including permanent cord clip, the permanent rope
Box beam otic placode is provided with below folder, the top of permanent rope is connected with the permanent cord clip, the bottom end of the permanent rope and institute
Box beam otic placode is stated to be connected；
The middle and lower part two sides of the permanent rope are symmetrically arranged with reaction beam, and permanent rope is provided on the permanent rope to be replaced
Drag-line folder, the two sides of the permanent cable stretching cord clip are connected with the permanent cable stretching bar extended downwardly, the permanent cable stretching bar
Bottom end pass through sequentially passed through after the reaction beam again it is fixed after permanent cable stretching support foot and permanent cable stretching centre-hole jack；
The identical end of two reaction beams is held in interim hoist cable tensioning anchor cup, and the permanent cord clip two sides are respectively provided with
There is interim cord clip, is provided with interim rope between the interim cord clip of same side and the interim hoist cable tensioning anchor cup, temporarily hangs
The bottom end of cable stretching screw rod and interim hoist cable pitch ear Liang Xianglian, the lower surface of the interim hoist cable fork ear beam and the interim rope
Top is provided with interim hoist cable fork-shaped otic placode, and the hole that interim hoist cable pin shaft passes through on the interim hoist cable fork-shaped otic placode is consolidated
It is fixed；The top of the interim hoist cable tensioning screw rod sequentially passes through interim hoist cable tensioning after being pierced by the interim hoist cable tensioning anchor cup again
Support foot is fixed with after interim hoist cable stretch-draw jack by interim hoist cable tensioning stem nut.
The both ends of the permanent rope are provided with permanent hoist cable fork-shaped otic placode, the permanent hoist cable fork-shaped otic placode and the case
It is fixedly connected between type beam otic placode or permanent cord clip by permanent rope pin shaft.
It is reserved in each interim hoist cable tensioning anchor cup that there are two be convenient for the interim hoist cable tensioning screw rod to pass through
Through-hole, i.e., the number of the described interim hoist cable tensioning screw rod are 4.
In the middle part of the permanent rope to be replaced, the PE sheath of the permanent rope to be replaced is stripped, then described in clamping forever
Long cable stretching cord clip.
The clamping position of the permanent cable stretching cord clip is at 3 ~ 5m of anchor cup apart from the permanent rope to be replaced.
The permanent cable stretching cord clip is made of a pair with a thickness of the clamping plate of 2 ~ 3cm, the shape of the permanent cable stretching cord clip
Shape be it is rectangular, first for passing through the permanent rope to be replaced is reserved in the middle part of the permanent cable stretching cord clip and is run through
Hole and the second through hole for passing through two permanent cable stretching bars for being set to first through hole two sides, institute
The side for stating permanent cable stretching cord clip is provided with several bolt fixing holes for running through two clamping plates.
The reaction beam is steel box-girder, and the reaction beam is reserved with just at anchor cup with the position of the permanent Suo Pinghang
In the hole for allowing the interim hoist cable tensioning screw rod and permanent cable stretching bar to pass through.
The reaction beam is by the permanent cable stretching centre-hole jack force position setting web and lateral stiffening
Plate.
A kind of double interim rope self-balancings of pin ear formula provided by the invention pull formula suspension bridge sling replacing underpinning device, underpin
The interim Suo Caiyong of device sells ear formula, and interim cord clip uses structural form identical with permanent cord clip, interim cord clip and interim rope
It is connected by pin shaft；The interim rope of underpinning device need only be stretched to target Suo Li, without huge stretching force is applied, make to be replaced
The Suo Li of hoist cable is reduced to zero.On the one hand the effect of interim rope is the Suo Li (being not zero) for reducing hoist cable to be replaced, be on the other hand
Safety guarantee is provided entirely to change rope process.
The invention has the following advantages that one, adapt to lifting lug anchor slab reserve two lifting lug holes, different hoist cable spacing, hoist cable
The hoist cable replacement operation of all kinds of suspension bridges of length；Two, interim Suo Caiyong sells ear formula, and interim cord clip is using identical as permanent cord clip
Construction；Three, when hoist cable is replaced, not needing interim cable stretching is zero to remove again to the Suo Li of hoist cable to be replaced, but directly benefit
With self balancing device, hoist cable to be replaced is pulled using jack, makes the pin shaft stress zero of hoist cable to be replaced；Four, to existing outstanding
The main push-towing rope of cable bridge, the linear of stiff girder and internal force perturb small, structure safety；Five, this underpins system and can be used for close to bridge tower position
The hoist cable at place is replaced.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of reaction beam in the present invention；
Fig. 3 is the structural schematic diagram of interim hoist cable tensioning anchor cup in the present invention；
Fig. 4 is the structural schematic diagram of permanent cable stretching cord clip in the present invention；
Fig. 5 is the structural schematic diagram that interim hoist cable pitches ear beam in the present invention；
Fig. 6 is the structural schematic diagram of interim cord clip in the present invention；
Wherein: 1 interim cord clip；2 interim ropes；3, interim hoist cable tensioning anchor cup；4 interim hoist cable tensioning screw rods；5 interim hoist cable forks
Ear beam；6 interim hoist cable fork-shaped otic placodes；7 interim hoist cable pin shafts；8 interim hoist cable tensioning support foots；9 interim hoist cable stretch-draw jacks；
10 interim hoist cable tensioning stem nuts；11 permanent cable stretching cord clips；12 permanent cable stretching support foots；13 permanent cable stretching punchings are very heavy
Top；14 reaction beams；15 permanent cable stretching bars；16 box beam otic placodes；17 permanent ropes；18 permanent cord clips；19 permanent rope pin shafts.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Fig. 1 ~ Fig. 6, the double interim rope self-balancings of pin ear formula pull formula suspension bridge sling replacing underpinning device, including forever
Long cord clip 18, the lower section of the permanent cord clip 18 are provided with box beam otic placode 16, the top of permanent rope 17 and the permanent cord clip
18 are connected, and the bottom end of the permanent rope 17 is connected with the box beam otic placode 16；Permanent rope 17 and permanent 18/ box beam ear of cord clip
The specific connection type of plate 16 are as follows: the both ends of the permanent rope 17 are provided with permanent hoist cable fork-shaped otic placode, the permanent hoist cable
It is fixedly connected between fork-shaped otic placode and the box beam otic placode 16 or permanent cord clip 18 by permanent rope pin shaft 19.
The middle and lower part two sides of the permanent rope 17 are symmetrically arranged with reaction beam 14, are arranged on the permanent rope 17 to be replaced
There is permanent cable stretching cord clip 11, the two sides of the permanent cable stretching cord clip 11 are connected with the permanent cable stretching bar 15 extended downwardly,
The bottom end of the permanent cable stretching bar 15 sequentially passes through permanent cable stretching support foot 12 and permanent rope after passing through the reaction beam 14 again
It is tightened by nut and is fixed after tensioning centre-hole jack 13；
The identical end of two reaction beams 14 is held in interim hoist cable tensioning anchor cup 3, permanent 18 two sides of cord clip
It is provided with interim cord clip 1, is provided between the interim cord clip 1 of same side and the interim hoist cable tensioning anchor cup 3 interim
The bottom end of rope 2, interim hoist cable tensioning screw rod 4 is connected with interim hoist cable fork ear beam 5, the lower surface of the interim hoist cable fork ear beam 5
And 2 top of interim rope is provided with interim hoist cable fork-shaped otic placode 6, interim hoist cable pin shaft 7 passes through the interim hoist cable fork
Hole on shape otic placode 6 and fix；After the top of the interim hoist cable tensioning screw rod 4 is pierced by the interim hoist cable tensioning anchor cup 3
Interim hoist cable tensioning support foot 8 is sequentially passed through again to be fixed with after interim hoist cable stretch-draw jack 9 by interim hoist cable tensioning stem nut 10.
It is reserved in each interim hoist cable tensioning anchor cup 3 that there are two pass through convenient for the interim hoist cable tensioning screw rod 4
Through-hole, i.e., the number of the described interim hoist cable tensioning screw rod 4 is 4.
Preferably, at permanent 17 middle part of rope to be replaced, the PE sheath of the permanent rope 17 to be replaced is stripped, then
Permanent cable stretching cord clip 11 described in clamping.It is further preferred that the clamping position of the permanent cable stretching cord clip 11 be distance to
Replacement the permanent rope 17 3 ~ 5m of anchor cup at, still more preferably for 4 m at.
The permanent cable stretching cord clip 11 is made of a pair with a thickness of the clamping plate of 2 ~ 3cm, and further preferably 2cm is described
Permanently the shape of cable stretching cord clip 11 is rectangular, and the middle part of the permanent cable stretching cord clip 11 is reserved with for making institute to be replaced
State the first through hole that permanent rope 17 passes through and be set to first through hole two sides for making two permanent ropes
The second through hole that tension rod 15 passes through, the side of the permanent cable stretching cord clip 11 are provided with several two clamping plates that run through
Bolt fixing hole.Bolt passes through bolt fixing hole, is clamped permanent rope 17 by tightening bolt, permanent cable stretching cord clip 11
Length is determining according to suspension bridge design specification according to power is pulled.
The reaction beam 14 is steel box-girder, and for the reaction beam 14 at anchor cup, the position parallel with the permanent rope 17 is pre-
There are the holes convenient for allowing the interim hoist cable tensioning screw rod 4 and permanent cable stretching bar 15 to pass through.
The reaction beam 14 is by permanent 13 force position of the cable stretching centre-hole jack setting web and transverse direction
Stiffener, to enhance local stability.
The device of the present embodiment makes full use of profit to raise existing a pair of of the otic placode of bridge and reserves pin shaft hole, left in permanent cord clip 18
The right side, each a pair of interim rope 2 of arrangement.Interim 2 one end of rope uses pin ear formula, and the other end uses the interim hoist cable tensioning of tensioning chill casting formula
Two circular cavities are reserved in the two sides of anchor cup 3, interim hoist cable tensioning anchor cup 3, pass through convenient for interim hoist cable tensioning screw rod 4.It is hung temporarily
The upside of cable stretching anchor cup 3 is shelved reaction beam 14, interim hoist cable tensioning support foot 8, interim hoist cable stretch-draw jack 9 and is temporarily hung
Cable stretching stem nut 10.
The underpinning device that the present embodiment is related to is by interim cord clip 1, interim hoist cable fork-shaped otic placode 6, interim rope 2, interim hoist cable
Tensioning anchor cup 3, interim hoist cable tensioning screw rod 4, interim hoist cable tensioning support foot 8, interim hoist cable stretch-draw jack 9, interim hoist cable
Pull-rod nut 10, interim hoist cable pitch ear beam 5, permanent cable stretching bar 15, permanent cable stretching cord clip 11, permanent cable stretching punching thousand
Jin top 13, permanent cable stretching support foot 12, permanent cable stretching stem nut, reaction beam 14 etc. form.The major technique of the underpinning device
Feature is as follows:
1. 2 upper end of interim rope of underpinning device is connect using pin type with interim cord clip 1, interim cord clip 1 is used and permanent cord clip
18 identical forms.
2. 2 lower end of interim rope of underpinning device is interim hoist cable tensioning anchor cup 3, the two sides of interim hoist cable tensioning anchor cup 3 are pre-
It boxes out hole, is passed through convenient for interim hoist cable tensioning screw rod 4.The lower end of interim hoist cable tensioning screw rod 4 is connect with fork ear.Interim hoist cable
It draws 9 pushing tow of jack to draw interim hoist cable tensioning screw rod 4, Suo Li is applied to interim rope 2.On the one hand the effect of interim rope 2 is pair
Permanent rope 17 plays unloading, is on the other hand to play safety protection function to hoist cable work progress to be replaced.
3. existing steel box-girder in underpinning device, permanent rope pin shaft 19, interim hoist cable pin shaft 7, is temporarily hung steel box-girder otic placode 16
Rope pitches ear beam 5, interim hoist cable tensioning screw rod 5 and interim hoist cable tensioning stem nut 10, reaction beam 14 and forms a self-balancing system,
Replacement for permanent rope 17.
4. stripping the PE sheath of permanent rope 17 to be replaced at the anchor cup 4m apart from permanent rope 17 to be replaced, installation is permanent
Cable stretching cord clip 11, permanent cable stretching bar 15, permanent cable stretching support foot 12 and permanent cable stretching centre-hole jack 13 etc..
5. permanent cable stretching centre-hole jack 13 works, in the base force of permanent cable stretching centre-hole jack 13
Transmittance process is: 13 → reaction beam of permanent cable stretching centre-hole jack 14 → interim hoist cable tensioning stem nut 10 → interim hoist cable
Tensioning screw rod 4 → interim hoist cable fork ear beam 5 → interim hoist cable 7 → box beam of pin shaft otic placode 16.In permanent cable stretching punching thousand
The other end on jin top 13, the power transfer mode of permanent cable stretching centre-hole jack 13 is: permanent cable stretching centre-hole jack
Nut → permanent cable stretching bar 15 → permanent cable stretching cord clip 11 → permanent rope 17 to be replaced of 13 → permanent cable stretching bar.This reality
The reaction beam system of the interim cable system and permanent Suo Genghuan that play unloading is combined into one by the underpinning device for applying example, makes the body
System has double action.
6. permanent rope 17 is replaced, since interim rope 2 only plays slightly unloading and security protection to permanent rope 17 to be replaced
Effect, and the Suo Li that original pin shaft undertakes is transferred to permanent cable stretching bar 15 and goes to hold by permanent cable stretching centre-hole jack 13
Load, neither will increase the Suo Li of permanent rope 17, will not reduce.Therefore, using above-mentioned hoist cable substitute mode, hoist cable construction pair
Main push-towing rope, the internal force of girder and hoist cable and linear influence are smaller, and the influence to Suo Li around is also small.
7. due to the hoist cable replacing options to original structure it is dry scratch variation be reduced to it is minimum, hoist cable replace when construction peace
Entirely, convenient.
8. the scheme of hoist cable at a suspension centre, this hoist cable are replaced using three suspension centres or five suspension centres relative to the replacement of some suspension bridges
Replacing Scheme need to only be arranged on hoist cable position to be replaced, reduce operation side and construction temporary facility, solve
The problems such as construction is complicated and the construction period is long.
The work progress of the present embodiment is as follows:
Step 1: preparing before construction
According to hoist cable underpinning device dimensional drawing, setting-out, blanking, assembly, drilling, welding.It detects the Suo Li of hoist cable to be replaced and applies
Preparation (hoist engine, material, component etc.) before work；
Step 2: interim rope installation
Interim cord clip 1, interim rope 2, interim hoist cable tensioning anchor cup 3, interim hoist cable fork ear beam 5, interim hoist cable tensioning screw rod are installed
4, reaction beam 14, interim hoist cable tensioning support foot 8, interim hoist cable stretch-draw jack 9, interim hoist cable tensioning stem nut 10, then open
It draws interim rope 2 to target Suo Li, old 17 part Suo Li of permanent rope is made to be transferred to interim rope 2；
Step 3: permanent cable stretching cord clip and replacement underpinning device installation
The permanent cable stretching cord clip 11 of permanent rope 17 to be replaced is installed, permanent cable stretching bar 15, permanent cable stretching support foot 12, forever
Long cable stretching centre-hole jack 13, and tightened with nut.
Step 4: permanent rope to be replaced is removed
With permanent 13 pushing reaction beam 14 of cable stretching centre-hole jack, permanent cable stretching bar 15 is drawn, tensioning is to be replaced permanent
Rope 17 makes the Suo Li of old permanent rope 17 be transferred to permanent cable stretching bar 15, and permanent rope pin shaft 19 is made to be in unstress state,
Remove permanent rope pin shaft 19, then the slowly unloading of permanent cable stretching centre-hole jack 13, remove permanent cable stretching cord clip 11 and
Permanent cable stretching bar 15, removes old permanent rope 17；Then old permanent 17 upper end pin shaft of rope is removed with hoist engine, and old rope is slow
Place bridge floor.
Step 5: new rope installation
New permanent rope 17 installs end pin shaft by elevator machine travel, then installs the permanent cable stretching cord clip 11 of new cable stretching
And permanent cable stretching bar 15, with permanent 13 pushing reaction beam 14 of cable stretching centre-hole jack and the permanent cable stretching bar of new rope
15, the new rope of tensioning keeps the fork-shaped otic placode pin shaft hole of new rope and 16 preformed hole of box beam otic placode concentric, installs permanent rope pin shaft 19,
Remove permanent cable stretching cord clip 11 and permanent cable stretching bar 15；
Step 6: repeating above step 4 and step 5, remove another old rope, another Gen Xinsuo is installed；
Step 7: removing underpinning device and interim rope
It removes hoist cable and replaces underpinning device: interim rope 2, interim hoist cable tensioning anchor cup 3, interim hoist cable tensioning screw rod 4 and interim rope
Folder 1, interim hoist cable fork ear beam 5 etc., interim 2 Suo Li of rope are transferred to a pair of new permanent rope 17, hang cable force and redistribute, hoist cable is more
It changes and finishes.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. the double interim rope self-balancings of pin ear formula pull formula suspension bridge sling replacing underpinning device, it is characterised in that: including permanent rope
It presss from both sides (18), is provided with box beam otic placode (16) below the permanent cord clip (18), the top of permanent rope (17) and described permanent
Cord clip (18) is connected, and the bottom end of the permanent rope (17) is connected with the box beam otic placode (16)；
The middle and lower part two sides of the permanent rope (17) are symmetrically arranged with reaction beam (14), are set on the permanent rope (17) to be replaced
It is equipped with permanent cable stretching cord clip (11), the two sides of the permanent cable stretching cord clip (11) are connected with the permanent cable stretching extended downwardly
Bar (15), the bottom end of the permanent cable stretching bar (15) sequentially pass through permanent cable stretching support foot after passing through the reaction beam (14) again
(12) it is fixed afterwards with permanent cable stretching centre-hole jack (13)；
The identical end of two reaction beams (14) is held on interim hoist cable tensioning anchor cup (3), the permanent cord clip
(18) two sides are provided with interim cord clip (1), the interim cord clip (1) and the interim hoist cable tensioning anchor cup (3) of same side
Between be provided with interim rope (2), the bottom end of interim hoist cable tensioning screw rod (4) is connected with interim hoist cable fork ear beam (5), it is described temporarily
The lower surface and the interim rope (2) top of hoist cable fork ear beam (5) are provided with interim hoist cable fork-shaped otic placode (6), temporarily hang
Rope pin shaft (7) passes through the hole on the interim hoist cable fork-shaped otic placode (6) and fixes；The interim hoist cable tensioning screw rod (4)
Top sequentially passes through interim hoist cable tensioning support foot (8) and interim hoist cable tensioning after being pierced by the interim hoist cable tensioning anchor cup (3) again
It is fixed by interim hoist cable tensioning stem nut (10) after jack (9).
2. the double interim rope self-balancings of pin ear formula according to claim 1 pull formula suspension bridge sling replacing underpinning device,
Be characterized in that: the both ends of the permanent rope (17) are provided with permanent hoist cable fork-shaped otic placode, the permanent hoist cable fork-shaped otic placode with
It is fixedly connected between the box beam otic placode (16) or permanent cord clip (18) by permanent rope pin shaft (19).
3. the double interim rope self-balancings of pin ear formula according to claim 1 pull formula suspension bridge sling replacing underpinning device,
Be characterized in that: reserved on each interim hoist cable tensioning anchor cup (3) there are two convenient for the interim hoist cable tensioning screw rod (4)
The through-hole passed through, i.e., the number of the described interim hoist cable tensioning screw rod (4) are 4.
4. the double interim rope self-balancings of pin ear formula according to claim 1 pull formula suspension bridge sling replacing underpinning device,
It is characterized in that: in the middle part of the permanent rope (17) to be replaced, stripping the PE sheath of the permanent rope (17) to be replaced, refill
Press from both sides the permanent cable stretching cord clip (11).
5. the double interim rope self-balancings of pin ear formula according to claim 4 pull formula suspension bridge sling replacing underpinning device,
Be characterized in that: the clamping position of the permanent cable stretching cord clip (11) be anchor cup 3 apart from the permanent rope (17) to be replaced ~
At 5m.
6. the double interim rope self-balancings of pin ear formula according to claim 1 pull formula suspension bridge sling replacing underpinning device,
Be characterized in that: the permanent cable stretching cord clip (11) is made of a pair with a thickness of the clamping plate of 2 ~ 3cm, the permanent cable stretching cord clip
(11) shape be it is rectangular, be reserved in the middle part of the permanent cable stretching cord clip (11) for making the permanent rope to be replaced
(17) the first through hole for passing through and be set to first through hole two sides for making two permanent cable stretching bars
(15) side of the second through hole passed through, the permanent cable stretching cord clip (11) is provided with several spiral shells for running through two clamping plates
Bolt fixation hole.
7. the double interim rope self-balancings of pin ear formula according to claim 1 pull formula suspension bridge sling replacing underpinning device,
Be characterized in that: the reaction beam (14) is steel box-girder, and the reaction beam (14) is parallel with permanent rope (17) at anchor cup
The hole that position is reserved with convenient for allowing the interim hoist cable tensioning screw rod (4) and permanent cable stretching bar (15) to pass through.
8. the double interim rope self-balancings of pin ear formula according to claim 1 or claim 7 pull formula suspension bridge sling replacing underpinning device,
It is characterized by: web is being arranged by permanent cable stretching centre-hole jack (13) force position in the reaction beam (14)
With lateral stiffening plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500360.2A CN109537476B (en) | 2018-12-10 | 2018-12-10 | Pin lug type double-temporary-rope self-balancing pulling type suspension bridge sling replacement underpinning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500360.2A CN109537476B (en) | 2018-12-10 | 2018-12-10 | Pin lug type double-temporary-rope self-balancing pulling type suspension bridge sling replacement underpinning device |
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| CN109537476B CN109537476B (en) | 2024-02-23 |
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|---|---|---|---|
| CN201811500360.2A Active CN109537476B (en) | 2018-12-10 | 2018-12-10 | Pin lug type double-temporary-rope self-balancing pulling type suspension bridge sling replacement underpinning device |
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| CN113235461A (en) * | 2021-04-15 | 2021-08-10 | 江苏法尔胜缆索有限公司 | Method for repairing suspension bridge cable clamp and box girder ear hole |
| CN113322834A (en) * | 2021-04-15 | 2021-08-31 | 江苏法尔胜缆索有限公司 | Method for replacing sling of suspension bridge through single-lifting-point tensioning |
| CN114150891A (en) * | 2021-12-30 | 2022-03-08 | 柳州欧维姆工程有限公司 | Inhaul cable replacing method for space cable net supporting structure |
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| CN114150891A (en) * | 2021-12-30 | 2022-03-08 | 柳州欧维姆工程有限公司 | Inhaul cable replacing method for space cable net supporting structure |
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|---|---|
| CN109537476B (en) | 2024-02-23 |
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