CN109162209A - The quick-replaceable construction method of half-through and half/through arch bridge suspender - Google Patents
The quick-replaceable construction method of half-through and half/through arch bridge suspender Download PDFInfo
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- CN109162209A CN109162209A CN201811025150.2A CN201811025150A CN109162209A CN 109162209 A CN109162209 A CN 109162209A CN 201811025150 A CN201811025150 A CN 201811025150A CN 109162209 A CN109162209 A CN 109162209A
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- 238000010276 construction Methods 0.000 title claims abstract description 44
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
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- 238000000034 method Methods 0.000 claims description 35
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000013461 design Methods 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 238000004873 anchoring Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
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- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
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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
- E01D4/00—Arch-type bridges
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Abstract
The invention discloses the quick-replaceable construction methods of a kind of half-through and half/through arch bridge suspender, including step 1: installing the operating platform, prepares measurement monitoring；Step 2: interim pocket crane system is installed；Step 3: the interim pocket crane system of tensioning cuts off old sunpender；Step 4: old sunpender is removed；Step 5: installation and the new sunpender of tensioning realize the replacement of sunpender；Step 6: interim pocket crane system, new the adjusting of suspender power are removed.The construction method can be under conditions of the interim sunpender of less investment, operating personnel and machinery, achieve the purpose that the old sunpender of quick-replaceable, especially in half-through and the half/through arch bridge suspender replacement construction for being suitable for early stage for sunpender and being anchored at arch rib or crossbeam, the construction method is more efficient.
Description
Technical field
The present invention relates to the quick of the replacing options of arch bridge suspender, in particular to a kind of half-through and half/through arch bridge suspender
Replace construction method.
Background technique
Due to arched bridge pre-stressed boom beautiful design, span ability is big, is generally built in urban road, becomes the beautiful wind together in city
Scape line improves city image, however urban road wagon flow is intensive, and runway is again limited, and suspender replacement generally requires full-bridge envelope
It closes or enclosure portion lane, is affected to civil plantation.General authorities are the influence reduced to traffic, are wanted to the duration
Ask stringent.
Sunpender is anchored at arch rib or crossbeam in design and construction, the anchoring shape by the half-through and lower bearing arch bridge of early stage
Formula is limitation based on technology at that time and the selection made to the deficient long-range nature of late maintaining, replacement, can prevent arch rib and
The corrosion of the exposed sunpender steel wire of header portion, while sunpender and arch rib and header portion being made to form unified rigid body, it improves
Its globality, increases the anchor force of sunpender and arch rib and crossbeam, however causes influence factor when later period suspender replacement more, technology
It is required that high, complicated construction technique, replacement difficulty is big, causes to replace inefficiency, according to suspender replacement technical characterstic at this stage, such as
Fruit will accelerate suspender replacement progress, have and the mode of only increase input interim sunpender, operating personnel and machinery, this is not only
A kind of waste, and more sunpenders are replaced will lead to that structure stress is increasingly complex simultaneously, and the risk of suspender replacement is increased.
Arch bridge suspender replacement main technique is to install the operating platform, and measurement monitoring prepares, installs interim pocket crane system, tensioning
Interim pocket crane system cuts off old sunpender, removes former sunpender, installation and the new sunpender of tensioning, removes interim pocket crane system, sunpender rope
The processes such as power adjustment determine the pass of suspender replacement speed in the case where not increasing interim sunpender and operating personnel's machinery is put into
Dismounting of the key node process for anchoring section above and below time-consuming longest old sunpender, data statistic analysis, sunpender take anchor head and remove
Anchor head working hour accounts for 33.7%, 24.5% when suspender replacement chief engineer respectively, and the sum of working hour accounts for 58.2% when suspender replacement chief engineer,
Steel wire and cement slurry consolidation are integral in anchoring section embedded steel tube above and below arch rib and crossbeam for sunpender, between embedded steel tube and steel wire
Spacing is small, and under and efficiency time-consuming using other modes removing cement slurry is very low, and high-pressure water jet is to the fragmentation of material
Predominantly water jet acts on the fricting shearing of the impact of particle and water wedge effect, particle between each other and between particle and tube wall
Deng.Because steel pipe and steel wire are homogeneous solid materials, when setting specified water pressure, high-pressure water jet is not to pre-buried steel
Steel wire causes to impact in managing, and is only purged to the cement slurry between embedded steel tube and steel wire, therefore high-pressure water jet will not damage
Evil arrives other steel constructions such as steel wire and steel pipe.Reinforced concrete technology is abolished using high-pressure water jet, can be grasped using computer
Equipment is controlled, process is abolished and carries out under program, is constructed safer reliable.
Summary of the invention
The object of the present invention is to provide the quick-replaceable construction method of a kind of half-through and half/through arch bridge suspender, the constructions
Method can achieve the purpose that the old sunpender of quick-replaceable under conditions of the interim sunpender of less investment, operating personnel and machinery, special
It is not in half-through and the half/through arch bridge suspender replacement construction for being suitable in early days being anchored at sunpender arch rib or crossbeam, the construction
Method is more efficient.
Above-mentioned purpose of the invention is achieved through the following technical solutions: a kind of half-through and half/through arch bridge suspender it is fast
Speed replacement construction method, it is characterised in that: the construction method includes the following steps:
Step 1: installing the operating platform, and prepares measurement monitoring；
Step 2: interim pocket crane system is installed；
Step 3: the interim pocket crane system of tensioning cuts off old sunpender；
Step 4: old sunpender is removed；
Step 5: installation and the new sunpender of tensioning realize the replacement of sunpender；
Step 6: interim pocket crane system, new the adjusting of suspender power are removed.
In the present invention, the step 1 is installed the operating platform, and prepares measurement monitoring, and concrete processing procedure is as follows:
(1) there are two the operating platforms installed, one is the operating platform set up on arch rib with frame pipe, for sunpender
Tensioning is used, and be can also be used as new hanger erection and is used, the other is using construction to hang indigo plant as operating platform, for supplying in downrod lower end
Construction personnel installs lower anchor head and tensioning equipment；
(2) traverse point control net is established, above and below each sunpender under existing high-precision total station survey dead load state
Space coordinate and floor elevation between anchor plate, the benchmark as process control high in construction.
In the present invention, the step 2 installs interim pocket crane system, and concrete processing procedure is as follows:
(1) interim long sunpender is transported on arch rib, interim long sunpender is pre- from anchor point on four outrigger ends of tensioning platform
It boxes out and wears, each preformed hole wears an interim long sunpender, according to physical length spreading；
(2) interim pocket crane system is installed in bridge floor, interim pocket crane system includes conversion beam, stringer, crossbeam, lower joist and arch
Upper conversion beam and jack, stringer, crossbeam, lower joist and the upper conversion beam of arch are the original structure of arch bridge, and conversion beam is horizontal
It is arranged on stringer, installing four jack pairs altogether at conversion beam, temporarily long sunpender carries out tensioning, is then put into lower joist
Beam bottom is fixed temporarily lower joist with interim short steeve cucurbit；
(3) preformed hole that interim short steeve is passed through to conversion beam and lower joist by lower joist and is encircleed using interim short steeve
The longitudinal and cross beam of bridge is connected.
In the present invention, the step 3, the interim pocket crane system of tensioning cuts off old sunpender, concrete processing procedure is as follows:
(1) cement in the embedded steel tube being located between arch rib and crossbeam or more anchoring section is removed using high-pressure water jet
Slurry, so that embedded steel tube is separated with the steel wire in pipe；
(2) measurement by monitoring to suspender force, obtains force value in the dead load of every sunpender, is added step by step using existing
The Suo Li of original sunpender is gradually transferred on interim long sunpender by the method for carrying and discharging internal force；
(3) to the progress grading tension control of interim sunpender power in system conversion process: grading tension control respectively 0 →
20% → 40% → 60% → 80% → 100%, while old sunpender steel wire is cut off by same Suo Li, at the high 1.5m of bridge floor, point
It cuts off twice, and controls floor elevation changing value within the scope of ± 5mm in the stretching process of every level-one.
In the present invention, the step 4 removes old sunpender, and concrete processing procedure is as follows:
After old sunpender cutting, upper anchor head, the lower anchor head of arch bridge are directly taken out old anchor head using drawing mode, and drawing is filled
Set and be mounted under bridge floor, with hydraulic tensioning jack provide driving force, using high-strength bolt as jack tension part, high-strength bolt and
It is fixedly connected between the old sunpender anchor head of arch bridge by connector, using the steel of the whole old sunpender of beam drawing arch bridge of hydraulic tensioning jack
Silk or stranded wire anchor head finally carry out borehole cleaning to removing after old sunpender drawing.
In the present invention, the step 5 is installed and the new sunpender of tensioning, concrete processing procedure is as follows:
(1) former sunpender embedded steel tube cleans out, and after processing anchor plate repairing, installs new sunpender；
(2) suspender tension equipment is installed, suspender tension equipment uses existing equipment, including suspender tension connector, tensioning
Support foot, jack, tension rod and tensioning nut, and adjust centering；
(3) tensioning being carried out to new sunpender according to the stretching rope force value of design, absolute altitude control, tensioning classification is loaded, point
Grade releases interim suspender force；
(4) new suspender tension is to builder's tonnage, after Pass line adjustment is suitable, tightening nut and locking nut, and removal sunpender
Draw equipment.
In the present invention, the step 6 removes interim pocket crane system, new the adjusting of suspender power, and concrete processing procedure is as follows:
After the completion of full-bridge new suspender replacement, interim pocket crane system, the new suspender force of measurement full-bridge and bridge floor control are removed
Point absolute altitude, determines whether new suspender force and floor elevation reach design requirement by calculating analysis, if there is deviation, then
New suspender force is further adjusted, design requirement is reached, surveys a Suo Li and absolute altitude again to full-bridge tune Suo Wanhou, as applying
Work record is saved.
Construction method of the invention is solved in existing suspender replacement technology and can only be increased input to accelerate construction efficiency
The mode of interim sunpender, operating personnel and machinery, avoids more sunpenders while replacement causes structure stress increasingly complex and increases
The risk added, has prevented security-hidden trouble.
Construction method speed of application of the invention is fast, construction risk is low, strong operability.
Compared with prior art, the present invention has following remarkable result:
(1) uniqueness that the present invention has using high-pressure water jet is quickly removed and calculates depth in sunpender embedded steel tube
Cement slurry removes in embedded steel tube pipe fast 10 times of cement slurry or more than tradition, is 5 times of common solution efficiency.
(2) for the present invention after sunpender power is transferred to pocket crane system, upper and lower anchor head will by the way of hydraulic jack drawing
Old anchor head takes out.
(3) present invention changes the original stress of bridge structure smaller, and construction is simple, operation side is small, replacement
Period is smaller to the traffic impact of bridge, can accomplish uninterrupted traffic under reasonable arrangement, and speed of application is fast, high-efficient.
Detailed description of the invention
The present invention is described in further details with reference to the accompanying drawings and detailed description.
Fig. 1 is operation of the present invention platform schematic diagram；
Fig. 2 is interim pocket crane system schematic diagram of the invention；
Fig. 3 is sunpender cutting schematic diagram of the present invention；
Fig. 4 is that the present invention removes former sunpender schematic diagram；
Fig. 5 is that the present invention installs new sunpender schematic diagram.
Description of symbols
1, old sunpender 2, arch rib
3, operating platform 4, interim long sunpender
5, interim short steeve 6, conversion beam
7, lower joist 8, conversion beam on arch
9, jack 10, stringer
11, crossbeam 12, high-pressure water jet
13, embedded steel tube 14, cement slurry
15, the old sunpender steel wire of steel wire 16
17, upper anchor head 18, lower anchor head
19, draw-off gear 20, new sunpender.
Specific embodiment
As shown in Figures 1 to 5, the quick-replaceable construction method of a kind of half-through of the present invention and half/through arch bridge suspender, packet
Include following steps:
Step 1: installing the operating platform, and prepares measurement monitoring, and concrete processing procedure is as follows:
(1) there are two the operating platforms 3 installed, one is the operating platform set up on arch rib 2 with frame pipe, is mainly used
It is used in the tensioning of sunpender, can also be used as the new installation of sunpender 20 and use.The other is it is blue as operation to use construction to hang in downrod lower end
Platform, for installing lower anchor head 18 and tensioning equipment for construction personnel；
(2) traverse point control net is established, above and below each sunpender under existing high-precision total station survey dead load state
Space coordinate and floor elevation between anchor plate, the benchmark as process control high in construction.
Step 2 installs interim pocket crane system, and concrete processing procedure is as follows:
(1) interim long sunpender 4 is transported on arch rib 2, interim long sunpender 4 is from anchor point on four outrigger ends of tensioning platform
Preformed hole is worn, and each preformed hole wears an interim long sunpender 4, according to physical length spreading；
(2) interim pocket crane system is installed in bridge floor, interim pocket crane system includes conversion beam 6, stringer 10, crossbeam 11, subiculum
Beam 7 and the upper conversion beam 8 of arch and jack 9, stringer 10, crossbeam 11, lower joist 7 and the upper conversion beam 8 of arch are the original of arch bridge
Structure, conversion beam 6 are horizontally set on stringer 10, are installed four jack 9 altogether at conversion beam 6 and are carried out to interim long sunpender 4
Then lower joist 7 is put into beam bottom by tensioning, the interim short steeve cucurbit made of fining twisted steel is fixed temporarily lower joist 7；
(3) preformed hole that interim short steeve 5 is passed through to conversion beam 6 and lower joist 7, using interim short steeve 5 by lower joist 7
It is connected with the stringer 10 of arch bridge and crossbeam 11.
Step 3, the interim pocket crane system of tensioning, cuts off old sunpender 1；Concrete processing procedure is as follows:
(1) it is removed using high-pressure water jet 12 in the embedded steel tube 13 being located between arch rib 2 and crossbeam or more anchoring section
Cement slurry, high-pressure water jet spray gun use existing equipment, screw around sunpender or so, will be pre-buried using the impact force of high-pressure water jet
Cement slurry 14 in steel pipe 13 is broken and goes out, so that embedded steel tube 13 is separated with the steel wire 15 in pipe；
(2) measurement by monitoring to suspender force, obtains force value in the dead load of every sunpender, is added step by step using existing
The Suo Li of original sunpender is gradually transferred on interim long sunpender 4 by the method for carrying and discharging internal force；
(3) to the progress grading tension control of interim sunpender power in system conversion process: grading tension control respectively 0 →
20% → 40% → 60% → 80% → 100%, while old sunpender steel wire 16 is cut off by same Suo Li, in the high about 1.5m of bridge floor
Place, cuts off in two times, and controls floor elevation changing value within the scope of ± 5mm in the stretching process of every level-one.
Step 4 removes old sunpender 1, and concrete processing procedure is as follows:
After old sunpender cutting, upper anchor head 17, the lower anchor head 18 of arch bridge are directly taken out old anchor head using drawing mode, will be drawn
Pulling device 19 is mounted under bridge floor, and draw-off gear 19 uses existing equipment, includes high-strength bolt and connector, with hydraulic tensioning thousand
9 offer driving force of jin top passes through connection between high-strength bolt and the old sunpender anchor head of arch bridge using high-strength bolt as jack tension part
Device is fixedly connected, and using the steel wire or stranded wire anchor head of the whole old sunpender of beam drawing arch bridge of hydraulic tensioning jack, is drawn old sunpender 1
It is removed after pulling out, finally carries out borehole cleaning.
Step 5, installation and the new sunpender 20 of tensioning, realize the replacement of sunpender, concrete processing procedure is as follows:
(1) former sunpender embedded steel tube 13 cleans out, and after processing anchor plate repairing, installs new sunpender 20；
(2) suspender tension equipment is installed, suspender tension equipment uses existing equipment, including suspender tension connector, tensioning
Support foot, jack, tension rod and tensioning nut, and adjust centering；
(3) tensioning being carried out to new sunpender 20 according to the stretching rope force value of design, absolute altitude control, tensioning classification is loaded,
The interim suspender force of unranking；
(4) new 20 tensioning of sunpender is to builder's tonnage, after Pass line adjustment is suitable, tightening nut and locking nut, and removal sunpender
Tensioning equipment.
Step 6, removes interim pocket crane system, new the adjusting of suspender power, and concrete processing procedure is as follows:
After the completion of the new sunpender 20 of full-bridge is replaced, interim pocket crane system, the new suspender force of measurement full-bridge and bridge floor control are removed
A system point absolute altitude, by calculating analysis determines whether new suspender force and floor elevation reach design requirement, if there is deviation,
It then needs further to adjust new suspender force, reaches design requirement.
Specific the adjusting of suspender power mode is similar with the method for suspender tension.A Suo Li is surveyed again to full-bridge tune Suo Wanhou
And absolute altitude, it is saved as construction record.
Half-through and half/through arch bridge suspender quick-replaceable construction method of the invention solves existing suspender replacement technology
In can only increase input the mode of interim sunpender, operating personnel and machinery to accelerate construction efficiency, it is same to avoid more sunpenders
Shi Genghuan leads to the increasingly complex and increased risk of structure stress, has prevented security-hidden trouble.
Construction method speed of application of the invention is fast, construction risk is low, strong operability.
Application example
Case history 1
The brilliant old bridge of bridge was built in 1989, and bridge site is located at provincial highway extensively on high line S113, and East and West direction crosses over the Xijiang River, belongs to
A Very Large Bridge on the mainstream of the Xijiang River, is the traffic main artery of the external communications and transportation in Gaoming District, bridge overall length 1092.1m, two-way 4
Lane, across footpath group are combined into (78.5+4 × 82.6) deck type reinforced concrete ribbed arch bridge+(2 × 110) half-through steel tube concrete
Native arched bridge pre-stressed boom+(5 × 79+68.2) m deck type reinforced concrete ribbed arch bridge, bridge floor beam overall are 13.35m, reinforced concrete bridge
Face.Xijiang River navigation channel is I grade of inland river navigation channel at brilliant bridge, and current 3000t seagoing vessel, open the navigation or air flight clear height 22m, Designed Highest Navigable Stage
8.01m (pearl base).Full-bridge sunpender quantity is 36, and old sunpender specification is 5-109 steel wire, intensity of steel wire 1600Mpa, Fracture Force
For 349.2t.It is reported according to conventional detection in 2011, the 5# suspender force in the 6th hole downstream side changes compared with last time detection
6.23t, amplitude of variation 11%.Service life has been basically reached in view of most sunpenders simultaneously, therefore has replaced whole sunpenders.2016
It 2 months, tests 2 and uses this engineering method, during entire suspender replacement, bridge structure stress is controlled in permissible range,
Entire bridge structure is not affected by new damage, and efficiency is 5 times of common engineering method.
Case history 2
Foshan City's Fochen Bridge is open to the traffic in 1994, bridge long 883.84m, main span 115.80m.Spanning combination are as follows: (15 ×
16) m prestressed cored slab+(3 × 28.3) m reinforced concrete continuous beam+112.8m base-supporting concrete-filled steel tube tied arch+(3 ×
28.3) m reinforced concrete continuous beam+(18 × 16) m prestressed cored slab, totally 40 across.42 sunpenders are set on main bridge both sides of the chest altogether,
Away from 5m.Sunpender is all made of SNS/S-85 × 7mm zinc-coated wire and extrudes double sheath knob line type finished guy cables, and the upper end uses
LZM85IJ-7 type cold cast upset head anchor anchor is on anchor slab, lower end then uses the bulb-end anchorage anchor of designed, designed in crossbeam in arch rib upper tube
It is interior.It tests 6 and uses this engineering method in April, 2017, during entire suspender replacement, the control of bridge structure stress is being held
Perhaps in range, entire bridge structure is not affected by new damage, and efficiency is 5 times of common engineering method.
The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are not limited to
This, all this kind above content according to the present invention is not departing from this according to the ordinary technical knowledge and customary means of this field
Modification, replacement or change under the premise of inventing above-mentioned basic fundamental thought, to other diversified forms that above structure of the present invention is made
More, it should all fall within the scope and spirit of the invention.
Claims (7)
1. the quick-replaceable construction method of a kind of half-through and half/through arch bridge suspender, it is characterised in that: the construction method includes
Following steps:
Step 1: installing the operating platform, and prepares measurement monitoring；
Step 2: interim pocket crane system is installed；
Step 3: the interim pocket crane system of tensioning cuts off old sunpender；
Step 4: old sunpender is removed；
Step 5: installation and the new sunpender of tensioning realize the replacement of sunpender；
Step 6: interim pocket crane system, new the adjusting of suspender power are removed.
2. the quick-replaceable construction method of half-through according to claim 1 and half/through arch bridge suspender, it is characterised in that:
The step 1, installs the operating platform, and prepares measurement monitoring, and concrete processing procedure is as follows:
(1) there are two the operating platforms installed, one is the operating platform set up on arch rib with frame pipe, the tensioning for sunpender
With can also be used as new hanger erection and use, the other is it is blue as operating platform use construction to hang in downrod lower end, be used for for constructing
Personnel install lower anchor head and tensioning equipment；
(2) traverse point control net is established, the pad that casts anchor on each sunpender under existing high-precision total station survey dead load state is utilized
Space coordinate and floor elevation between plate, the benchmark as process control high in construction.
3. half-through according to claim 2 and half/through arch bridge suspender quickly replace construction method, it is characterised in that:
The step 2 installs interim pocket crane system, and concrete processing procedure is as follows:
(1) interim long sunpender is transported on arch rib, interim long sunpender is from anchor point preformed hole on four outrigger ends of tensioning platform
It wears, each preformed hole wears an interim long sunpender, according to physical length spreading；
(2) interim pocket crane system is installed in bridge floor, interim pocket crane system includes turning on conversion beam, stringer, crossbeam, lower joist and arch
Beam and jack are changed, stringer, crossbeam, lower joist and the upper conversion beam of arch are the original structure of arch bridge, and conversion beam is horizontally disposed
On stringer, installing four jack pairs altogether at conversion beam, temporarily long sunpender carries out tensioning, and lower joist is then put into beam bottom,
Lower joist is fixed temporarily with interim short steeve cucurbit；
(3) preformed hole that interim short steeve is passed through to conversion beam and lower joist, using interim short steeve by lower joist and arch bridge
Longitudinal and cross beam is connected.
4. the quick-replaceable construction method of half-through according to claim 3 and half/through arch bridge suspender, it is characterised in that:
The step 3, the interim pocket crane system of tensioning, cuts off old sunpender, concrete processing procedure is as follows:
(1) cement slurry in the embedded steel tube being located between arch rib and crossbeam or more anchoring section is removed using high-pressure water jet, is made
Embedded steel tube is obtained to separate with the steel wire in pipe；
(2) by measurement of the monitoring to suspender force, obtain force value in the dead load of every sunpender, using existing multistage loadings and
The Suo Li of original sunpender is gradually transferred on interim long sunpender by the method for discharging internal force；
(3) to the progress grading tension control of interim sunpender power in system conversion process: grading tension control respectively 0 → 20% →
40% → 60% → 80% → 100%, while old sunpender steel wire is cut off by same Suo Li, at the high 1.5m of bridge floor, cut in two times
It is disconnected, and floor elevation changing value is controlled within the scope of ± 5mm in the stretching process of every level-one.
5. the quick-replaceable construction method of half-through according to claim 4 and half/through arch bridge suspender, it is characterised in that:
The step 4 removes old sunpender, and concrete processing procedure is as follows:
After old sunpender cutting, upper anchor head, the lower anchor head of arch bridge are directly taken out old anchor head using drawing mode, and draw-off gear is pacified
Under bridge floor, driving force is provided with hydraulic tensioning jack, using high-strength bolt as jack tension part, high-strength bolt and arch bridge
Be fixedly connected between old sunpender anchor head by connector, using the whole old sunpender of beam drawing arch bridge of hydraulic tensioning jack steel wire or
Stranded wire anchor head finally carries out borehole cleaning to removing after old sunpender drawing.
6. the quick-replaceable construction method of half-through according to claim 5 and half/through arch bridge suspender, it is characterised in that:
The step 5, installation and the new sunpender of tensioning, concrete processing procedure are as follows:
(1) former sunpender embedded steel tube cleans out, and after processing anchor plate repairing, installs new sunpender；
(2) install suspender tension equipment, suspender tension equipment use existing equipment, including suspender tension connector, tensioning support foot,
Jack, tension rod and tensioning nut, and adjust centering；
(3) tensioning is carried out to new sunpender according to the stretching rope force value of design, absolute altitude control, tensioning classification is loaded, classification solution
Except interim suspender force；
(4) new suspender tension is to builder's tonnage, and after Pass line adjustment is suitable, tightening nut and locking nut, removal suspender tension are set
It is standby.
7. the quick-replaceable construction method of half-through according to claim 6 and half/through arch bridge suspender, it is characterised in that:
The step 6, removes interim pocket crane system, new the adjusting of suspender power, and concrete processing procedure is as follows:
After the completion of full-bridge new suspender replacement, interim pocket crane system, the new suspender force of measurement full-bridge and bridge floor control point mark are removed
Height determines whether new suspender force and floor elevation reach design requirement by calculating analysis, if there is deviation, then into one
Step renewing suspender force, reaches design requirement, surveys a Suo Li and absolute altitude again to full-bridge tune Suo Wanhou, records as construction
Record is saved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN111119075A (en) * | 2019-12-31 | 2020-05-08 | 山西省交通新技术发展有限公司 | Replacement construction method for suspender of super-large half-through arch bridge |
| CN111597614A (en) * | 2020-05-13 | 2020-08-28 | 广西交科集团有限公司 | Bridge deck displacement control method for replacing arch bridge suspender based on actual measurement displacement correction |
| CN113107211A (en) * | 2021-03-31 | 2021-07-13 | 中冶(上海)钢结构科技有限公司 | Temporary reinforcing method for replacing equipment anchorage device in tensioning and lifting construction |
| CN113152313A (en) * | 2021-04-19 | 2021-07-23 | 南京润华建设集团有限公司 | Suspender replacing structure of tied arch bridge and construction method thereof |
| CN113605251A (en) * | 2021-09-16 | 2021-11-05 | 广西大学 | Arch bridge cable adjusting method |
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| CN111119075A (en) * | 2019-12-31 | 2020-05-08 | 山西省交通新技术发展有限公司 | Replacement construction method for suspender of super-large half-through arch bridge |
| CN111597614A (en) * | 2020-05-13 | 2020-08-28 | 广西交科集团有限公司 | Bridge deck displacement control method for replacing arch bridge suspender based on actual measurement displacement correction |
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| CN113107211A (en) * | 2021-03-31 | 2021-07-13 | 中冶(上海)钢结构科技有限公司 | Temporary reinforcing method for replacing equipment anchorage device in tensioning and lifting construction |
| CN113152313A (en) * | 2021-04-19 | 2021-07-23 | 南京润华建设集团有限公司 | Suspender replacing structure of tied arch bridge and construction method thereof |
| CN113605251A (en) * | 2021-09-16 | 2021-11-05 | 广西大学 | Arch bridge cable adjusting method |
| CN113605251B (en) * | 2021-09-16 | 2022-11-29 | 广西大学 | Arch bridge cable adjusting method |
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