CN104727230B - Frame bridge box lifting method - Google Patents

Frame bridge box lifting method Download PDF

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Publication number
CN104727230B
CN104727230B CN201510163367.XA CN201510163367A CN104727230B CN 104727230 B CN104727230 B CN 104727230B CN 201510163367 A CN201510163367 A CN 201510163367A CN 104727230 B CN104727230 B CN 104727230B
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China
Prior art keywords
casing
slip casting
hole
lifting
grouting
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Active
Application number
CN201510163367.XA
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Chinese (zh)
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CN104727230A (en
Inventor
刘杨
王曦
肖宝海
安海平
赵振杰
郑如滨
李欢
朱海涛
刘军锋
张莹
于海
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China Railway Sixth Group Co Ltd
Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
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China Railway Sixth Group Co Ltd
Tianjin Railway Construction Co Ltd of China Railway Sixth Group Co Ltd
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Priority to CN201510163367.XA priority Critical patent/CN104727230B/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D35/00Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
    • E02D35/005Lowering or lifting of foundation structures

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

A kind of frame bridge box lifting method. It comprises that subsiding crack is picked to seam to be cleared up, and then uses water drilling boring slip casting downwards in this position, so that U-shaped groove separates with casing; In the soil body at casing front and back end place, form wall for grouting; Rear portion, front portion and middle part at box bottom form respectively multiple reinforced holes, lifting hole and compensate opening; Utilize slip casting machine above-mentioned hole to be carried out to the steps such as grouting operation. Frame bridge box lifting method provided by the invention is led the way without removing casing both sides, therefore cement consumption saves 20% than previous methods, thereby can significantly reduce construction cost, reduction of erection time, can also reduce difficulty of construction simultaneously, have that operating characteristics is strong, security performance high simultaneously, there is significant advance and practicality.

Description

Frame bridge box lifting method
Technical field
The invention belongs to rail facility technical field of construction, particularly relate to a kind of frame bridge box lifting sideMethod.
Technical background
Along with the develop rapidly of urban construction, volume of transport is also in continuous increase. When existing railway withWhen highway grade crossing, common way is to build frame bridge under existing railway, with this alleviate due toRail track in city through and the traffic congestion phenomenon that causes. When some frame bridge or because of service lifeLong or cannot meet the requiring of traffic during because inner width is too small, just need to be with new frame bridge displacementGo out old frame bridge. Conventional method of replacing is jacking at present, and this method is limit removal of old framework bridgeAnd the soil body lateral dominance jack that digs out this bridge below will form joint or a more piece casing of frame bridge main bodyThe below jacking from existing railway one or both sides to existing railway. But in jacking construction process, be subject to variousThe impact of extraneous factor, occurs that casing front end sink sometimes, therefore cannot meet absolute altitude requirement, therebyCause impassable " pricking head " phenomenon of vehicle, at this moment just need the upwards lifting of this position. At presentConventional casing lifting method all adopts from the construction method of casing both sides slip casting, and the method is from casingIn the soil body of two side direction base plates belows, entry and exit, carry out slip casting with by casing lifting. But, this existingConstruction method there is following point: if leading the way of these casing both sides constructed completely, at this moment need both sidesU-shaped reamer just can carry out grouting operation except rear, otherwise cannot construct, thereby cause producing thusRaw dismounting workload is large, and destroys the problems such as U-shaped groove globality, will increase so undoubtedly constructionDifficulty and increase self cost.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide that a kind of difficulty of construction is little and expense is lowFrame bridge box lifting method.
In order to achieve the above object, frame bridge box lifting method provided by the invention comprises in order and carrying outThe following step:
1) at four jiaos of places of top board of casing, an observation station is set respectively, to carry out in the time of casing liftingSettlement observation;
2) on the base plate of casing, within the scope of injected hole, mark out reinforcement location, the steel so that when boring staggersMuscle position;
3) subsiding crack between the base plate of casing and the U-shaped groove of casing both sides is picked to seam cleaning, soAfter use water drilling boring slip casting downwards in this position so that U-shaped groove separates with casing;
4) in the soil body at casing front and back end place, adopt pneumatic pick to head into many grouting tubes, then utilize notePulp grinder, by grouting tube injected water mud simultaneously, makes cement mortar enter below, casing front and back end by high pressureThe soil body in, thereby ponding and mud under this place's base plate are squeezed to outside pore, until cement mortar is emergedAfter stop slip casting, after slurries solidify, form wall for grouting;
5) utilize water drilling boring downwards at the rear portion of base plate and form multiple reinforced holes, form many in front portionIndividual lifting hole, forms multiple compensate openings at middle part;
6) utilize slip casting machine cement mortar to be injected in multiple reinforced holes, grouting pressure should keep one simultaneouslyCause, stop slip casting after slurries are emerged, object is that the soil body of base plate lower rear is reinforced, in caseOnly in the anterior lifting of base plate hole, cause rear portion to sink when slip casting;
7) utilize slip casting machine cement mortar to be injected in multiple liftings hole, grouting pressure should keep one simultaneouslyCause, so that lifting is carried out in casing front portion, in this process, utilize above-mentioned observation station to carry out settlement observation, heavyThe stable slip-casting lifting that again carries out falls;
8) utilize slip casting machine cement mortar to be injected in multiple compensate openings, grouting pressure should keep one simultaneouslyCause, the requirement height that reaches to be uplifted utilizes above-mentioned observation station to carry out settlement observation afterwards;
9) after not changing, settlement stability, absolute altitude use cement mortar, swelling agent by reinforced hole, liftingThe whole shutoff of hole and compensate opening, in case emit on leak-stopping water, slurries;
10) finally subsiding crack is cleaned out, is then injected concrete, after concrete is dry thereonUse caulk compound joint seal, fill out elastic polyurethane glue at outside edge afterwards, complete thus whole casing liftingJourney.
The density in described compensate opening, reinforced hole and lifting hole increases successively.
Frame bridge box lifting method provided by the invention is led the way without removing casing both sides, and therefore cement is usedAmount saves 20% than previous methods, thereby can significantly reduce construction cost, the reduction of erection time, also simultaneouslyCan reduce difficulty of construction, have that operating characteristics is strong, security performance high simultaneously, have significantAdvance and practicality.
Brief description of the drawings
Fig. 1 when utilizing frame bridge box lifting method provided by the invention construction before and after casing lifting longitudinallyStructure cutaway view.
Fig. 2 casing transversary when utilizing frame bridge box lifting method provided by the invention construction is analysed and observeFigure.
Fig. 3 casing when utilizing frame bridge box lifting method provided by the invention construction is connected with U-shaped groovePortion structure schematic diagram.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, frame bridge box lifting method provided by the invention is enteredRow describes in detail.
As shown in Fig. 1-Fig. 3, frame bridge box lifting method provided by the invention comprises in order and carrying outThe following step:
1) at four jiaos of places of top board of casing 1, an observation station is set respectively, to enter in the time of casing 1 liftingRow settlement observation;
2) on the base plate 2 of casing 1, within the scope of injected hole, mark out reinforcement location, so that boring time is staggeredReinforcement location;
3) subsiding crack 4 between the base plate of casing 12 and the U-shaped groove 3 of casing 1 both sides is picked to seamCleaning, is then used water drilling boring slip casting downwards, so that U-shaped groove 3 separates with casing 1 in this position;
4) in the soil body at casing 1 front and back end place, adopt pneumatic pick to head into many grouting tubes, then utilizeSlip casting machine, by grouting tube injected water mud simultaneously, makes cement mortar enter casing 1 front and back end by high pressureIn the soil body of below, thereby ponding and mud under this place's base plate 2 are squeezed to outside pore, until cementSlurry stops slip casting after emerging, and forms wall for grouting 5 after slurries solidify;
5) utilize water drilling boring downwards at the rear portion of base plate 2 and form multiple reinforced holes 6, form in front portionMultiple liftings hole 7, forms multiple compensate openings 8 at middle part; Wherein compensate opening 8, reinforced hole 6 and lifting hole7 density increases successively;
6) utilize slip casting machine simultaneously by cement mortar to the interior injection of multiple reinforced holes 6, grouting pressure should keepUnanimously, stop slip casting after slurries are emerged, object is that the soil body of base plate 2 lower rear is reinforced,To prevent causing when the 7 interior slip casting of the anterior lifting of base plate 2 hole rear portion to sink; Cement adopt No. 42.5 commonPortland cement, concentration of sodium silicate is 37-40Be, modulus is 2.4-3.7; Along with the increasing of slurries injection rateAdd, underground soil body structure under the pressure of slurries changes, and pressure constantly increases, when surrounding extruding is pressedPower is greater than while upwarding pressure, and casing 1 obtains lifting;
7) utilize slip casting machine simultaneously by cement mortar to the 7 interior injections of multiple liftings hole, grouting pressure should keepUnanimously, so that lifting is carried out in casing 1 front portion, in this process, utilize above-mentioned observation station to carry out settlement observation,Settlement stability carries out slip-casting lifting again;
8) utilize slip casting machine simultaneously by cement mortar to the interior injection of multiple compensate openings 8, grouting pressure should keepUnanimously, the requirement height that reaches to be uplifted utilizes above-mentioned observation station to carry out settlement observation afterwards;
9) after not changing, settlement stability, absolute altitude use cement mortar, swelling agent by reinforced hole 6, liftingHole 7 and the whole shutoff of compensate opening 8, in case emit on leak-stopping water, slurries;
10) finally subsiding crack 4 is cleaned out, kept dry, must not have foreign material and ponding, then noteEnter concrete, after concrete is dry, use caulk compound joint seal thereon, fill out polyurethane at outside edge afterwardsElastic gum, completes whole casing lifting process thus.

Claims (2)

1. a frame bridge box lifting method, is characterized in that: it comprises carry out in order followingStep:
1) at four jiaos of places of top board of casing (1), an observation station is set respectively, so that in casing (1)When lifting, carry out settlement observation;
2) within the scope of the upper injected hole of base plate (2) of casing (1), mark out reinforcement location, to boreReinforcement location staggers when in the hole;
3) by sinking between the base plate of casing (1) (2) and the U-shaped groove (3) of casing (1) both sidesFall seam (4) and pick seam cleaning, then use water drilling boring slip casting downwards in this position, so that UType groove (3) separates with casing (1);
4) in the soil body at casing (1) front and back end place, adopt pneumatic pick to head into many grouting tubes, then profitBy grouting tube injected water mud simultaneously, make cement mortar enter casing (1) by high pressure with slip casting machineIn the soil body of below, front and back end, thereby ponding and mud under this place's base plate (2) are squeezed to outside pore,Until cement mortar stops slip casting after emerging, after solidifying, slurries form wall for grouting (5);
5) utilize water drilling boring downwards at the rear portion of base plate (2) and form multiple reinforced holes (6),The anterior multiple liftings hole (7) that forms, forms multiple compensate openings (8) at middle part;
6) utilize slip casting machine cement mortar to be injected in multiple reinforced holes (6), grouting pressure should be protected simultaneouslyHold unanimously, stop slip casting after slurries are emerged, object is that the soil body of base plate (2) lower rear is carried outReinforce, cause rear portion sagging when preventing the anterior lifting of base plate (2) hole (7) in slip casting;
7) utilize slip casting machine simultaneously by cement mortar interior injection to multiple liftings hole (7), grouting pressure should be protectedHold unanimously, so that lifting is carried out in casing (1) front portion, in this process, utilize above-mentioned observation station to sinkFall observation, settlement stability carries out slip-casting lifting again;
8) utilize slip casting machine cement mortar to be injected in multiple compensate openings (8), grouting pressure should be protected simultaneouslyHold unanimously, the requirement height that reaches to be uplifted utilizes above-mentioned observation station to carry out settlement observation afterwards;
9) after settlement stability, absolute altitude do not change with cement mortar, swelling agent by reinforced hole (6),The all shutoff of lifting hole (7) and compensate opening (8), in case emit on leak-stopping water, slurries;
10) finally subsiding crack (4) is cleaned out, then injected concrete, after concrete is dryUse caulk compound joint seal thereon, fill out elastic polyurethane glue at outside edge afterwards, complete thus whole casingLifting process.
2. frame bridge box lifting method according to claim 1, is characterized in that: describedThe density of compensate opening (8), reinforced hole (6) and lifting hole (7) increases successively.
CN201510163367.XA 2015-04-08 2015-04-08 Frame bridge box lifting method Active CN104727230B (en)

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Application Number Priority Date Filing Date Title
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112942455A (en) * 2019-12-11 2021-06-11 北京恒祥宏业基础加固技术有限公司 Reinforcing and lifting method for karst foundation high-rise building

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3973577B2 (en) * 2003-03-10 2007-09-12 株式会社シェグ橋梁研究所 Bridge, bridge structure and bridge construction method
CN102051861A (en) * 2009-11-02 2011-05-11 郑州优特基础工程维修有限公司 Bridgehead vehicle bump prevention and control high polymer grouting technique and construction method thereof
JP2013142226A (en) * 2012-01-10 2013-07-22 Sumitomo Mitsui Construction Co Ltd Construction method for box girder bridge
CN103821039A (en) * 2014-02-28 2014-05-28 中铁第四勘察设计院集团有限公司 Correcting method for high speed railway ballastless track subgrade in soft soil area
CN104047306A (en) * 2014-05-26 2014-09-17 江苏鼎泰工程材料有限公司 Method for lifting and centralizing sinking house

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3973577B2 (en) * 2003-03-10 2007-09-12 株式会社シェグ橋梁研究所 Bridge, bridge structure and bridge construction method
CN102051861A (en) * 2009-11-02 2011-05-11 郑州优特基础工程维修有限公司 Bridgehead vehicle bump prevention and control high polymer grouting technique and construction method thereof
JP2013142226A (en) * 2012-01-10 2013-07-22 Sumitomo Mitsui Construction Co Ltd Construction method for box girder bridge
CN103821039A (en) * 2014-02-28 2014-05-28 中铁第四勘察设计院集团有限公司 Correcting method for high speed railway ballastless track subgrade in soft soil area
CN104047306A (en) * 2014-05-26 2014-09-17 江苏鼎泰工程材料有限公司 Method for lifting and centralizing sinking house

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