CN103966956B - A kind of hood type concrete filled steel tube reinforces single-column Bridge Pier Construction device and construction method - Google Patents
A kind of hood type concrete filled steel tube reinforces single-column Bridge Pier Construction device and construction method Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 165
- 239000010959 steel Substances 0.000 title claims abstract description 165
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- 238000010276 construction Methods 0.000 title claims abstract description 43
- 230000002787 reinforcement Effects 0.000 claims abstract description 28
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 8
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- 241000406668 Loxodonta cyclotis Species 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
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- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005728 strengthening Methods 0.000 description 4
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- 239000000203 mixture Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 239000003755 preservative agent Substances 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Abstract
A kind of hood type concrete filled steel tube reinforces single-column Bridge Pier Construction device and construction method, comprises the steel pipe for use in reinforcement performance of concrete column confined for being separately fixed at raw steel reinforced concrete independence pier stud both sides, for realizing anchor ear device that transverse direction connects between steel pipe for use in reinforcement performance of concrete column confined with raw steel reinforced concrete independence pier stud and be used for the anchor device that steel pipe for use in reinforcement performance of concrete column confined and cushion cap realize bottom anchor.The present invention utilizes steel pipe to concrete confined effect, be conducive to improving concrete anti-compression ability, laterally connect by anchor ear device newly-increased steel core concrete column and former pier stud being realized anchor ear, be conducive to the lateral stability of newly-increased steel core concrete column, have simple structure, stressed clear and definite rationally, the advantage such as construction technology is simple and easy to do, be applied to the reinforcing of highway ramp bridge and city intersection single-column bridge pier, the lateral stability type of bridge construction can be ensured, can economize on resources again.
Description
Technical field
The present invention relates to the bridge engineering of engineering construction field, particularly relate to a kind of bracing means and construction method of bridge engineering single-column bridge pier.
Background technology
Reduce land occupation, the increase visual field and bridge type advantage attractive in appearance owing to having, Single column pier bridge is widely used in China's city intersection, high speed ring road bridge.Because the vehicle of China's overload three or four times is too many, but the overload that designer considers is substantially all in the bending resistance resistance to compression of bridge, but does not take into full account the problem of the accidental unbalance loading of continuous overweight vehicle.The generation of the up ramp bridge capsizing case in Three links theory efforts of everyone viaduct Honghu road occurred along with on August 24th, 2012, cause the discussion of domestic multidigit bridge design expert to the recessive defect of Single column pier bridge, from current specifications, highway in China bridge specification, to the relevant regulations of Single column pier bridge lateral overturning stability, still belongs to blank.How the existing Single column pier bridge built up is carried out fast, economical, rationally and safely implement to reinforce, be a public safety problem and technical problem urgently solved.For Single column pier Problems existing, conventional Scheme of Strengthening is bar planting on original cushion cap, two Reinforced Concrete Pier Columns are newly built in former pier stud both sides, then with jack by case beam a little jack-up have some, at increase by two pier stud tops, two bearings are installed, but this Scheme of Strengthening has some shortcoming, the pier stud namely increased does not connect with former pier stud, and stability is bad; Long construction period; Concreting is vibrated operating difficulties etc.
Summary of the invention
The utility model is exactly the safety problem brought for the transverse overturning stability deficiency that existing expressway ramp bridge and urban interchange single-column bridge pier exist, a kind of simple and practical hood type concrete filled steel tube single-column bridge pier fastening device of proposition and construction method.
First providing a kind of hood type concrete filled steel tube and reinforce single-column Bridge Pier Construction device, comprising the steel pipe for use in reinforcement performance of concrete column confined for being separately fixed at raw steel reinforced concrete independence pier stud both sides, for the anchor ear device laterally connected and the anchor device being used for steel pipe for use in reinforcement performance of concrete column confined and cushion cap to realize bottom anchor will be realized between steel pipe for use in reinforcement performance of concrete column confined with raw steel reinforced concrete independence pier stud; Described steel pipe for use in reinforcement performance of concrete column confined is made up of the steel pipe of outside and the concrete of inside; Described anchor ear device comprises the first anchor ear for clamping raw steel reinforced concrete independence pier stud, for clamping the second anchor ear of steel pipe for use in reinforcement performance of concrete column confined, for cushioning, be connected in the first steel pad case between the first anchor ear and the second anchor ear and for the second steel pad case of cushioning two the second anchor ear outer ends respectively, and fastening by fastening bolt between described steel pad case and corresponding anchor ear.
Such scheme can more preferably:
Described anchor device comprises with the anchor plate of described steel pipe bottom welding and is fixed on the expansion anchor coordinated in cushion cap and with the anchor hole that anchor plate is preset.
By being welded and fixed between the second described anchor ear and steel pipe.
Concrete in described steel pipe adopts C50 pea gravel concreten.
Then provide a kind of above-mentioned hood type concrete filled steel tube to reinforce the construction method of single-column Bridge Pier Construction device, comprise the following steps:
The first step, cleaning setting-out: earthing or the foreign material of cleaning out cushion cap top, according to designing the plan-position setting-out of anchor plate to cushion cap top;
Second step, boring cleaning: be put into by anchor plate on design attitude, then get out anchor hole, drilling depth should meet the installation requirement of anchoring expansion anchor, and by wherein dust complete liquidation is clean;
3rd step, installs anchor device: install expansion anchor from outside to inside, thus complete the installation of anchor device, the gap between anchor plate and cushion cap, is closed by grout injection;
4th step, installs steel pipe: on the anchor plate of anchor device, install fixing steel pipe;
5th step, anchor ear device is installed: the both sides first the first anchor ear, the second anchor ear being placed into respectively raw steel reinforced concrete independence pier stud and steel pipe for use in reinforcement performance of concrete column confined during installation, again the second steel pad case, the first steel pad case are placed on respectively the outer end of the second anchor ear, between the first anchor ear and the second anchor ear, then connected with the first anchor ear, the second anchor ear respectively by the two ends of fastening bolt by the first steel pad case, second steel pad case is connected with the second anchor ear, realizes anchor ear device and connect with the anchor ear of raw steel reinforced concrete independence pier stud and steel pipe for use in reinforcement performance of concrete column confined; Finally be welded and fixed between the second anchor ear and the outside steel pipe of steel pipe for use in reinforcement performance of concrete column confined;
6th step, pressure injection concrete filled steel tube: first at steel pipe top welding end socket steel plate, in steel pipe top, ventilating pipe is installed, steel pipe lower weld elephant trunk and connect concrete ground pump, then by concrete by the concrete of concrete ground pump in the middle of lift-up method pressure injection steel pipe;
7th step, after the intensity of concrete filled steel tube meets the demands, cuts off ventilating pipe and elephant trunk, and by opening welded closure;
8th step: top jack being put into raw steel reinforced concrete independence pier stud, by bridge superstructure case beam a little jack-up have some, in steel pipe for use in reinforcement concrete pier column top, support steel backing plate is installed, unloads jack, complete the stress check calculation of newly-increased reinforcing concrete filled steel tube pier stud.
Above-mentioned construction method can be improved to further:
When the 5th described step installs anchor ear device, set up mounting bracket in installation site, then coordinated by leading block of chain, hoist engine or tackle pulley and anchor ear device is installed.
Described construction method also comprises the 9th step: carry out anticorrosion repair process to the anchor device of the outside steel pipe of steel pipe for use in reinforcement performance of concrete column confined, anchor ear device and bottom.
Hood type concrete filled steel tube of the present invention reinforces single-column Bridge Pier Construction device, compared with conventional Scheme of Strengthening, has following remarkable advantage:
(1) simple structure.The present invention is made up of several parts such as bottom anchor device, steel pipe, anchor ear device and support steel backing plates, constructs fairly simple, is convenient to processing and fabricating, transport and installation.
(2) system is stressed clear and definite, reasonable.Make full use of steel pipe to concrete confined effect, be conducive to improving concrete anti-compression ability, connect newly-increased steel core concrete column and former pier stud being realized anchor ear transverse direction by anchor ear device, be conducive to the lateral stability of newly-increased steel core concrete column.
(3) manufacture craft is simple.Several parts such as bottom anchor device, steel pipe, anchor ear device and supporting steel backing plate that the present invention is used, because simple structure, general structure steel fabrication producer can do, and makes quality comparation and easily controls.
(4) construction technology is easy, easily implements.During strengthening construction, except two lifting steel pipes need small-sized crane to coordinate except installation, remaining component just can complete installation with the small machine such as leading block of chain or hoist engine, and construction technology is simple, can ensure construction quality.
In sum, a kind of reinforced steel pile tube of the present utility model and steel pipe column have simple structure, stressed clear and definite rationally, the advantage such as construction technology is simple and easy to do, be applied to the reinforcing of highway ramp bridge and city intersection single-column bridge pier, the lateral stability type of bridge construction can be ensured, can economize on resources again, there is higher popularization and value.
Accompanying drawing explanation
Fig. 1 hood type concrete filled steel tube reinforces single-column Bridge Pier Construction device general arrangement;
Fig. 2 hood type concrete filled steel tube reinforces single-column Bridge Pier Construction device elevation;
1-1 profile in Fig. 3 Fig. 1;
2-2 profile in Fig. 4 Fig. 1;
The organigram of Fig. 5 anchor ear A;
Fig. 6 anchor ear B organigram;
Fig. 7 steel pad case A organigram;
Fig. 8 steel pad case B organigram;
Fig. 9 hood type concrete filled steel tube reinforces the concrete lift-up construction schematic diagram of single-column Bridge Pier Construction device;
In figure: 1, cast-in-place bridge case beam (containing middle cross beam); 2, support steel backing plate, 3, raw steel reinforced concrete independence pier stud, 4, steel pipe for use in reinforcement performance of concrete column confined, 4-1, steel pipe, 4-2, concrete, 5, anchor ear device, 5-1, anchor ear A, 5-2, anchor ear B, 5-3, steel pad case A, 5-4, steel pad case B, 6, anchor device, 6-1, anchor plate, 6-2, expansion anchor, 7, cushion cap, 8, steel pipe ventilating pipe, 9, elephant trunk, 10, concrete ground pump, 11, concrete tank.
Detailed description of the invention
Below in conjunction with accompanying drawing, working of an invention mode is described further, but not as a limitation of the invention.
A kind of hood type concrete filled steel tube reinforces single-column Bridge Pier Construction device, by support steel backing plate 2, steel pipe for use in reinforcement performance of concrete column confined 4, a few part composition such as anchor ear device 5 and anchor device 6, wherein steel pipe for use in reinforcement performance of concrete column confined 4 is made up of steel pipe 4-1 and rear Pumping concrete 4-2, anchor ear device 5 clamps steel pipe for use in reinforcement performance of concrete column confined 4 by anchor ear A 5-1(), anchor ear B 5-2(clamps raw steel reinforced concrete independence pier stud 3), steel pad case A 5-3(difference cushioning is in the outer end of two anchor ear A 5-1), steel pad case B 5-4(connects, cushioning is between anchor ear A 5-1 and anchor ear B 5-2) and several component composition such as fastening bolt, bottom anchor device 6 is made up of anchor plate 6-1 and expansion anchor 6-2.
The making step that a kind of hood type concrete filled steel tube reinforces single-column Bridge Pier Construction device is:
The first step: according to raw steel reinforced concrete independence pier stud 3 and cushion cap 7 size, and theoretical calculation analysis, determine the scantling of steel pipe for use in reinforcement performance of concrete column confined 4, anchor ear device 5, anchor device 6, and the inside of bracing means is arranged and layout;
Second step: entrust the unit possessing steel work processing qualification, processing and fabricating anchor plate, steel pipe, anchor ear device, support steel backing plate;
3rd step: after strenthening member is completed by producer, first should carrying out entirety examination assembled, through inspecting for acceptance, should meet design requirement;
4th step: the preservative treatment of component.Before component dispatches from the factory, should require to carry out anticorrosion of steel structure process according to related specifications, then entrucking can be transported to job site.
A kind of hood type concrete filled steel tube reinforces single-column Bridge Pier Construction device construction method:
The first step: cleaning setting-out.Remove the earthing at cushion cap 7 top or foreign material and clean out, the position of carrying out anchor plate 6 according to the plan-position of design is released.
Second step: boring cleaning.Be put on design attitude by anchor plate 6-1, by basis reserved anchor hole above, anchor hole come outbreak out with Churn drill one by one, drilling depth should meet the installation requirement of expansion anchor 6-2, with air compressor machine will wherein dust complete liquidation be clean;
3rd step: install anchor device 6.From outside to inside expansion anchor 6-2 is installed, thus completes the installation of anchor device 6, the gap between anchor plate 6-1 and cushion cap 7, closed by perfusion high-mark cement slurry;
4th step: install steel pipe 4-1.On the anchor plate 6-1 of anchor device 6, coordinate with small-sized crane and steel pipe 4-1 is installed.
5th step: install anchor ear device.Manually set up mounting bracket in the position of installing anchor ear device 5, then leading block of chain or the small machine such as hoist engine, tackle pulley coordinate installation anchor ear device 5, first anchor ear A 5-1, anchor ear B 5-2 are placed into the both sides of newly-increased steel pipe 4-1 and raw steel reinforced concrete independence pier stud 3 during installation, again steel pad case A 5-3 and steel pad case B 5-4 is put into anchor ear A 5-1 outer end respectively, between anchor ear A 5-1 and anchor ear B 5-2, wears fastening bolt and anchor ear device 5 and raw steel reinforced concrete independence pier stud 3 and newly-increased steel pipe 4 are realized anchor ear connect.Be welded and fixed between anchor ear A 5-1 and newly-increased steel pipe 4-1 with electric welding.
6th step.Pressure injection concrete filled steel tube.First at steel pipe 4-1 welded top end socket steel plate, at steel pipe 4-1 top, steel pipe ventilating pipe 8 is installed, at the lower weld elephant trunk 9 of steel pipe 4-1, connect concrete ground pump 10, by concrete manufacturer production C50 pea gravel concreten, be transported to job site with concrete tank 11, be directly put in concrete ground pump 10, with the concrete 4-2 in the middle of lift-up method pressure injection steel pipe 4-1.
7th step: after the intensity of the concrete 4-2 in steel pipe 4-1 meets the demands, cut off steel pipe ventilating pipe 8 and elephant trunk 9, and by opening welded closure.
8th step: top jack being put into raw steel reinforced concrete independence pier stud 3, by bridge superstructure case beam and cast-in-place bridge case beam 1(containing middle cross beam) a little jack-up have some, at steel pipe 4 top, support steel backing plate 2 is installed, unloads jack, complete the stress check calculation of newly-increased steel core concrete column.
9th step: steel beam column is exposed to steel pipe column, anchor ear device and bottom anchor device etc. and carries out anticorrosion repair process.
Except the technical characteristic described in this manual, be the known technology of those skilled in the art.
Claims (4)
1. hood type concrete filled steel tube reinforces a construction method for single-column Bridge Pier Construction device, it is characterized in that: described hood type concrete filled steel tube is reinforced single-column Bridge Pier Construction device and comprised steel pipe for use in reinforcement performance of concrete column confined for being separately fixed at raw steel reinforced concrete independence pier stud both sides, for realizing the anchor ear device that transverse direction connects and the anchor device being used for steel pipe for use in reinforcement performance of concrete column confined and cushion cap to realize bottom anchor between steel pipe for use in reinforcement performance of concrete column confined with raw steel reinforced concrete independence pier stud; Described steel pipe for use in reinforcement performance of concrete column confined is made up of the steel pipe of outside and the concrete of inside; Described anchor ear device comprises the first anchor ear for clamping raw steel reinforced concrete independence pier stud, for clamping the second anchor ear of steel pipe for use in reinforcement performance of concrete column confined, for cushioning, be connected in the first steel pad case between the first anchor ear and the second anchor ear and for the second steel pad case of cushioning two the second anchor ear outer ends respectively, and fastening by fastening bolt between described steel pad case and corresponding anchor ear; Described anchor device comprises with the anchor plate of described steel pipe bottom welding and is fixed on the expansion anchor coordinated in cushion cap and with the anchor hole that anchor plate is preset; Construction method comprises the following steps:
The first step, cleaning setting-out: earthing or the foreign material of cleaning out cushion cap top, according to designing the plan-position setting-out of anchor plate to cushion cap top;
Second step, boring cleaning: be put into by anchor plate on design attitude, then get out anchor hole, drilling depth should meet the installation requirement of anchoring expansion anchor, and by wherein dust complete liquidation is clean;
3rd step, installs anchor device: install expansion anchor from outside to inside, thus complete the installation of anchor device, the gap between anchor plate and cushion cap, is closed by grout injection;
4th step, installs steel pipe: on the anchor plate of anchor device, install fixing steel pipe;
5th step, anchor ear device is installed: the both sides first the first anchor ear, the second anchor ear being placed into respectively raw steel reinforced concrete independence pier stud and steel pipe for use in reinforcement performance of concrete column confined during installation, again the second steel pad case, the first steel pad case are placed on respectively the outer end of the second anchor ear, between the first anchor ear and the second anchor ear, then connected with the first anchor ear, the second anchor ear respectively by the two ends of fastening bolt by the first steel pad case, second steel pad case is connected with the second anchor ear, realizes anchor ear device and connect with the anchor ear of raw steel reinforced concrete independence pier stud and steel pipe for use in reinforcement performance of concrete column confined; Finally be welded and fixed between the second anchor ear and the outside steel pipe of steel pipe for use in reinforcement performance of concrete column confined;
6th step, pressure injection concrete filled steel tube: first at steel pipe top welding end socket steel plate, in steel pipe top, ventilating pipe is installed, steel pipe lower weld elephant trunk and connect concrete ground pump, then by concrete by the concrete of concrete ground pump in the middle of lift-up method pressure injection steel pipe;
7th step, after the intensity of concrete filled steel tube meets the demands, cuts off ventilating pipe and elephant trunk, and by opening welded closure;
8th step: top jack being put into raw steel reinforced concrete independence pier stud, by bridge superstructure case beam a little jack-up have some, in steel pipe for use in reinforcement concrete pier column top, support steel backing plate is installed, unloads jack, complete the stress check calculation of newly-increased reinforcing concrete filled steel tube pier stud.
2. hood type concrete filled steel tube according to claim 1 reinforces the construction method of single-column Bridge Pier Construction device, it is characterized in that: the concrete in described steel pipe adopts C50 pea gravel concreten.
3. hood type concrete filled steel tube according to claim 1 reinforces the construction method of single-column Bridge Pier Construction device, it is characterized in that, when described 4th step installs steel pipe, adopts small-sized crane to coordinate and installs steel pipe; When the 5th described step installs anchor ear device, set up mounting bracket in installation site, then coordinated by leading block of chain, hoist engine or tackle pulley and anchor ear device is installed.
4. hood type concrete filled steel tube according to claim 3 reinforces the construction method of single-column Bridge Pier Construction device, it is characterized in that, described construction method also comprises the 9th step: carry out anticorrosion repair process to the anchor device of the outside steel pipe of steel pipe for use in reinforcement performance of concrete column confined, anchor ear device and bottom.
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| CN106988423B (en) * | 2017-04-12 | 2022-08-30 | 中铁工程设计咨询集团有限公司 | Rail transit elevated station |
| CN106930191B (en) * | 2017-04-21 | 2018-07-24 | 中交一公局第一工程有限公司 | A kind of cast-in-situ box girder hoop bracket system and its construction method |
| CN108118911B (en) * | 2018-01-02 | 2023-08-18 | 山东省路桥集团有限公司 | Detachable steel tube concrete supporting device and using method |
| CN110258298B (en) * | 2019-06-06 | 2024-07-16 | 中铁第四勘察设计院集团有限公司 | Bridge-loading pier for urban rail transit cable |
| CN111910535B (en) * | 2020-07-21 | 2022-04-15 | 北京国道通公路设计研究院股份有限公司 | Nondestructive reinforcement supporting system for single-column pier bridge and construction method |
| CN114775463A (en) * | 2022-05-24 | 2022-07-22 | 中铁大桥科学研究院有限公司 | Rapid reinforcing device and method for bridge pier after transverse damage |
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