CN109723075A - A kind of prefabrication and assembly construction controllable type open caisson construction method - Google Patents
A kind of prefabrication and assembly construction controllable type open caisson construction method Download PDFInfo
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- CN109723075A CN109723075A CN201811485800.1A CN201811485800A CN109723075A CN 109723075 A CN109723075 A CN 109723075A CN 201811485800 A CN201811485800 A CN 201811485800A CN 109723075 A CN109723075 A CN 109723075A
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- caisson
- jurisdiction
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- ring
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Abstract
The present invention relates to Construction Technique of Shaft fields, disclose a kind of prefabrication and assembly construction controllable type open caisson construction method, are that caisson structure is lifted by crane and sunk by lifting equipment folding and unfolding steel strand wires, and carries out controllable type sinking and correction to caisson structure；Blade foot ring and earth's surface fore shaft are made, lifting equipment is installed, caisson structure is assembled, caisson structure is lifted by crane and is sunk；Speed of application of the present invention is fast, and by the synchronous decentralization of section of jurisdiction lifting, open caisson is controllable, highly-safe.
Description
Technical field
The present invention relates to Construction Technique of Shaft field more particularly to a kind of prefabrication and assembly construction controllable type open caisson construction methods.
Background technique
In recent years, as the land resource in city is in short supply and Planning Principles upgrade, urban underground space field is developed very
Rapidly.Most cities underground engineering, such as deep tunnel, shield tunnel, sewage pumping station, pipe gallery, underground stereo garage parking, all
Need construction shaft engineering.A kind of works of the open caisson as pit shaft shape, because its buried depth is big, globality is strong, stability is good,
Especially is influenced on close to buildings the advantages that smaller, is widely used in the work shaft of city.Existing open caisson construction method,
Mainly by cutting the earth in well, the self weight of the cast-in-place concrete borehole wall sinks to designed elevation after overcoming borehole wall frictional resistance, then is sealed
Internal structure is constructed at bottom.During structure is sunk, since geological environment is uneven, or shoveling is unbalanced, and it is heavy to often result in
The inclination of well.After open caisson constructs certain depth, open caisson rectify a deviation extremely difficult.And traditional cast-in-place concrete open caisson
The structure construction duration is longer and supporting effect is not good enough.
Summary of the invention
In order to solve the above technical problems, the present invention proposes a kind of prefabrication and assembly construction controllable type open caisson construction method.Open caisson knot
Structure is assembled using prefabricated pipe section, and speed of application is fast, and by the synchronous decentralization of section of jurisdiction lifting, open caisson is controllable, highly-safe.
In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is that:
A kind of prefabrication and assembly construction controllable type open caisson construction method is to be lifted by crane by lifting equipment folding and unfolding steel strand wires to caisson structure
And sinking, and controllable type sinking and correction are carried out to caisson structure；Its step are as follows:
1) blade foot ring and the production of earth's surface fore shaft.Excavation pit first, production or assembled blade foot ring, blade foot ring can be in foundation pit
Steel structure assembling is integral, or monolithic reinforced concrete structure；Be reserved in blade foot ring lifting steel stranded wire penetrating adapter hole and
Groove.After blade foot ring completes, reinforced concrete structure earth's surface fore shaft is made.
2) lifting equipment is mounted on lifting equipment base, and lifting equipment base is fixed on earth's surface fore shaft with foundation bolt
On.It, can the multiple lifting equipment of flexible setting according to open caisson diameter and weight.Lifting equipment is by lifting steel strand wires to caisson structure
It is lifted by crane and is sunk, behind gap of the lifting steel strand wires across Tu Bi and section of jurisdiction, behind the lashing hole that blade foot ring is reserved,
It is fixed in above-mentioned groove with anchor slab；And the lubricant of bentonite thixotropic slurry is injected in the gap between Tu Bi and section of jurisdiction,
For reducing penetration resistance and maintaining soil wall stability；
3) assembles caisson structure, the tubular structure that caisson structure is made of several section of jurisdiction rings；The section of jurisdiction ring is equal by quantity
A type section of jurisdiction and Type B section of jurisdiction constitute；A type section of jurisdiction and Type B section of jurisdiction are the adjacent wedge-shaped section of jurisdiction for being suitble to vertically assemble；It is described
It is longitudinal joint between the section of jurisdiction block of section of jurisdiction ring, is connected using cross bolts.It is circumferential weld between the section of jurisdiction ring and ring, using vertical spiral shell
It tethers and connects；When not cutting the earth in open caisson well, and when caisson structure is held motionless by lifting equipment, start pipe in the top surface of caisson structure
Piece is assembled；
Pipe sheet assembling sequence of construction are as follows: it is symmetrical assembled from A BOB(beginning of block) when assembled, B block is finally installed；It is assembled into bottom ring, it is assembled
After completing and sinking；
It is assembled into lower layer's ring again；……
Until entire cylindrical body is completed in assembled upper layer ring, assembly；
4) is lifted by crane and is sunk to caisson structure.Lifting and decentralization are by submitting the core-theaded type hydraulic cylinder pine in equipment
It opens, lock steel strand wires to realize, see lifting equipment operation schematic diagram.
Method for sinking: the first step, the front upper and lower anchor of caisson wall sinking are in locking state, and core-theaded type oil cylinder is in retraction shape
State starts to transfer, and casts anchor and is failure to actuate in locking state, and upper anchor unclamps；Second step, core-theaded type cylinder piston rod stretch out, upper anchor
A decentralization stroke is integrally moved up with piston rod；Third step, upper anchor lock steel strand wires；4th step, casts anchor and unclamps steel strand wires；5th
Step, casts anchor and unclamps steel strand wires, and core-theaded type cylinder piston rod is withdrawn, and completes this circulation caisson wall decentralization work.Under continuing
It is heavy to begin to new circulation.
Hoisting method: the first step, caisson wall lift by crane front upper and lower anchor and are in locking state, and core-theaded type oil cylinder is in retraction shape
State starts to lift by crane, and upper anchor is failure to actuate in locking state, release of casting anchor；Second step, core-theaded type cylinder piston rod stretch out, upper anchor
A lifting stroke is integrally moved up with piston rod；Third step casts anchor and locks steel strand wires；4th step, upper anchor unclamp steel strand wires；5th
Step, core-theaded type cylinder piston rod are withdrawn, and complete this circulation caisson wall slinging work.New follow is begun to if you need to continue lifting
Ring.
When open caisson generates skew during sinking, then being matched by what the lifting and sinking of multiple lifting equipment acted
It closes, to rectify a deviation to open caisson, keeps open caisson cylinder in a vertical state.
5) caisson structure sinks down into designed elevation, and lubricant is discharged, and cement mortar is injected from the injected hole of section of jurisdiction and is carried out
Well cementation.
Due to using technical solution as described above, the present invention is had the following advantages:
1, caisson structure uses the pipe sheet assembling of two kinds of patterns, and speed of application is fast.Section of jurisdiction type is few, and production cost is low.
2, caisson structure is sunk using lifting equipment, subsidence velocity and apart from controllable, is avoided since geological environment is uneven,
Or unbalanced, the inclination of caused open caisson of cutting the earth, work progress are highly-safe.
Detailed description of the invention
Fig. 1 open caisson lifts process schematic diagram；
Fig. 2 A type tunnel segment structure main view；
Fig. 3 Type B tunnel segment structure main view；
The prefabricated assembled open caisson expanded schematic diagram of Fig. 4；
The prefabricated assembled open caisson plan view of Fig. 5；
Fig. 6 lifting equipment operation schematic diagram.
In figure: 1-open caisson section of jurisdiction；2-lifting equipment；3-lifting equipment bases；4-steel strand wires draw drums；5-liftings
Steel strand wires；6-lubricant grooves；7-earth's surface fore shafts；8-caisson cutting edge rings；9-steel stranded wire penetrating adapter holes；10-grooves；11—
Anchor slab；12-hoisting rings；13-circumferential weld bolts hole；14-circumferential weld bolt hole hand holes；15-longitudinal joint bolts hole；16-longitudinal joint bolts
Hole hand hole；17-locating slots；18-injected holes；Anchor on 19；20 cast anchor；21 piston rods.
Specific embodiment
As shown in Fig. 1,2,3,4,5,6, a kind of prefabrication and assembly construction controllable type open caisson construction method is by lifting equipment folding and unfolding
Steel strand wires are lifted by crane and are sunk to caisson structure, and carry out controllable type sinking and correction to caisson structure；Its step are as follows:
1) blade foot ring and the production of earth's surface fore shaft.Excavation pit first, production or assembled blade foot ring, blade foot ring can be in foundation pit
Steel structure assembling is integral, or monolithic reinforced concrete structure；Be reserved in blade foot ring lifting steel stranded wire penetrating adapter hole and
Groove.After blade foot ring completes, reinforced concrete structure earth's surface fore shaft is made.
2) lifting equipment is mounted on lifting equipment base, and lifting equipment base is fixed on earth's surface fore shaft with foundation bolt
On.It, can the multiple lifting equipment of flexible setting according to open caisson diameter and weight.Lifting equipment is by lifting steel strand wires to caisson structure
It is lifted by crane and is sunk, behind gap of the lifting steel strand wires across Tu Bi and section of jurisdiction, behind the lashing hole that blade foot ring is reserved,
It is fixed in above-mentioned groove with anchor slab；And the lubricant of bentonite thixotropic slurry is injected in the gap between Tu Bi and section of jurisdiction,
For reducing penetration resistance and maintaining soil wall stability；
3) assembles caisson structure, the tubular structure that caisson structure is made of several section of jurisdiction rings；The section of jurisdiction ring is equal by quantity
A type section of jurisdiction and Type B section of jurisdiction constitute；A type section of jurisdiction and Type B section of jurisdiction are the adjacent wedge-shaped section of jurisdiction for being suitble to vertically assemble；It is described
It is longitudinal joint between the section of jurisdiction block of section of jurisdiction ring, is connected using cross bolts.It is circumferential weld between the section of jurisdiction ring and ring, using vertical spiral shell
It tethers and connects；When not cutting the earth in open caisson well, and when caisson structure is held motionless by lifting equipment, start pipe in the top surface of caisson structure
Piece is assembled；
Pipe sheet assembling sequence of construction are as follows: it is symmetrical assembled from A BOB(beginning of block) when assembled, B block is finally installed；It is assembled into bottom ring, it is assembled
After completing and sinking；
It is assembled into lower layer's ring again；……
Until entire cylindrical body is completed in assembled upper layer ring, assembly；
4) is lifted by crane and is sunk to caisson structure.Lifting and decentralization are by submitting the core-theaded type hydraulic cylinder pine in equipment
It opens, lock steel strand wires to realize, see Fig. 6 lifting equipment operation schematic diagram.
The method for sinking is as follows:
The first step, the front upper and lower anchor of caisson wall sinking are in locking state, and core-theaded type oil cylinder starts to transfer in retracted state,
It casts anchor and is failure to actuate in locking state, upper anchor unclamps；Second step, core-theaded type cylinder piston rod stretch out, and upper anchor is with piston rod entirety
Move up a decentralization stroke；Third step, upper anchor lock steel strand wires；4th step, casts anchor and unclamps steel strand wires；5th step, release of casting anchor
Steel strand wires, core-theaded type cylinder piston rod are withdrawn, and complete this circulation caisson wall decentralization work.If you need to continue sink begin to it is new
Circulation.
The hoisting method is as follows:
The first step, caisson wall lift by crane front upper and lower anchor and are in locking state, and core-theaded type oil cylinder starts to lift by crane in retracted state,
Upper anchor is failure to actuate in locking state, release of casting anchor；Second step, core-theaded type cylinder piston rod stretch out, and upper anchor is with piston rod entirety
Move up a lifting stroke；Third step casts anchor and locks steel strand wires；4th step, upper anchor unclamp steel strand wires；5th step, core-theaded type oil
Cylinder piston rod is withdrawn, and completes this circulation caisson wall slinging work.New circulation is begun to if you need to continue lifting.
When open caisson generates skew during sinking, then being matched by what the lifting and sinking of multiple lifting equipment acted
It closes, to rectify a deviation to open caisson, keeps open caisson cylinder in a vertical state.
5) caisson structure sinks down into designed elevation, and lubricant is discharged, and cement mortar is injected from the injected hole of section of jurisdiction and is carried out
Well cementation.
The lifting equipment is mounted on lifting equipment base, and lifting equipment base is fixed on earth's surface fore shaft with foundation bolt
On, earth's surface fore shaft is the reinforced concrete structure of annular.The blade foot ring can be integral for steel structure assembling, or existing
Pour reinforced concrete structure；Lifting steel stranded wire penetrating adapter hole and groove are reserved in the blade foot ring；The lifting steel strand wires are used for
Caisson structure lifting, lifting steel strand wires connect lifting equipment, reserve behind the gap across Tu Bi and section of jurisdiction by blade foot ring
Lashing hole after, be fixed in above-mentioned groove with special anchor slab；Injection such as swelling in gap between the Tu Bi and section of jurisdiction
The lubricant of native thixotropic slurry one kind, can reduce penetration resistance and maintain soil wall stability；The lifting equipment passes through folding and unfolding steel
Twisted wire realizes lifting and decentralization, carries out controllable type sinking and correction to caisson structure；It is described to sink to caisson structure controllable type,
It is carry out synchronous with shoveling process in open caisson well；
The tubular structure that the caisson structure is made of several section of jurisdiction rings；The section of jurisdiction ring is by the equal A type section of jurisdiction of quantity and B
Type section of jurisdiction is constituted；A type section of jurisdiction and Type B section of jurisdiction are the adjacent wedge-shaped section of jurisdiction for being suitble to vertically assemble；The section of jurisdiction of the section of jurisdiction ring
It is longitudinal joint between block, is connected using cross bolts.It is circumferential weld between the section of jurisdiction ring and ring, using being vertically bolted；When heavy
It does not cut the earth in well well, and when caisson structure is held motionless by lifting equipment, starts pipe sheet assembling in the top surface of existing caisson structure；
Section of jurisdiction sequence in the construction method are as follows: it is symmetrical assembled from A BOB(beginning of block) when assembled, B block is finally installed.Lower layer's ring assembly is completed
And after sinking, assembled upper layer ring, until assembled complete entire cylindrical body.A type section of jurisdiction and Type B section of jurisdiction bottom are provided with recessed
Slot is inserted into groove by the hoisting ring of lower layer section of jurisdiction, to carry out positioning when assembly.After the well sinking, discharge profit
Lubrication prescription injects cement mortar from the injected hole of section of jurisdiction and cements the well.
Claims (1)
1. a kind of prefabrication and assembly construction controllable type open caisson construction method, it is characterized in that: being by lifting equipment folding and unfolding steel strand wires to open caisson
Structure is lifted by crane and is sunk, and carries out controllable type sinking and correction to caisson structure；Its step are as follows:
1) blade foot ring and the production of earth's surface fore shaft, first excavation pit, production or assembled blade foot ring, blade foot ring are steel knot in foundation pit
Structure assembly is integral, or is monolithic reinforced concrete structure；Lifting steel stranded wire penetrating adapter hole and groove are reserved in blade foot ring；Blade foot
After ring completes, reinforced concrete structure earth's surface fore shaft is made；
2) lifting equipment is mounted on lifting equipment base, and lifting equipment base is fixed on earth's surface fore shaft with foundation bolt；Root
According to open caisson diameter and weight, multiple lifting equipment are set；
Lifting equipment is lifted by crane and is sunk to caisson structure by lifting steel strand wires, lifting steel strand wires pass through Tu Bi and section of jurisdiction it
Between gap after, by blade foot ring reserve lashing hole after, be fixed in above-mentioned groove with anchor slab；And between Tu Bi and section of jurisdiction
Gap in inject bentonite thixotropic slurry lubricant, for reducing penetration resistance and maintaining soil wall stability；
3) assembles caisson structure, the tubular structure that caisson structure is made of several section of jurisdiction rings；The section of jurisdiction ring is equal by quantity
A type section of jurisdiction and Type B section of jurisdiction constitute；A type section of jurisdiction and Type B section of jurisdiction are the adjacent wedge-shaped section of jurisdiction for being suitble to vertically assemble；It is described
It is longitudinal joint between the section of jurisdiction block of section of jurisdiction ring, is connected using cross bolts；It is circumferential weld between the section of jurisdiction ring and ring, using vertical spiral shell
It tethers and connects；When not cutting the earth in open caisson well, and when caisson structure is held motionless by lifting equipment, start pipe in the top surface of caisson structure
Piece is assembled；
Pipe sheet assembling sequence of construction are as follows: it is symmetrical assembled from A BOB(beginning of block) when assembled, B block is finally installed；It is assembled into bottom ring, it is assembled
After completing and sinking；
It is assembled into lower layer's ring again；……
Until entire cylindrical body is completed in assembled upper layer ring, assembly；
4) is lifted by crane and is sunk to caisson structure；Lifting and decentralization are by submitting the core-theaded type hydraulic cylinder pine in equipment
It opens, lock steel strand wires to realize；See lifting equipment operation schematic diagram；
Method for sinking: the first step, sink front upper and lower anchor of caisson wall are in locking state, core-theaded type oil cylinder in retracted state,
Start to transfer, cast anchor and be failure to actuate in locking state, upper anchor unclamps；Second step, core-theaded type cylinder piston rod stretch out, and upper anchor is with work
Stopper rod integrally moves up a decentralization stroke；Third step, upper anchor lock steel strand wires；4th step, casts anchor and unclamps steel strand wires；5th step,
It casts anchor and unclamps steel strand wires, core-theaded type cylinder piston rod is withdrawn, and completes this circulation caisson wall decentralization work；When need to continue sink just
Start new circulation；
Hoisting method: the first step, caisson wall lift by crane front upper and lower anchor and are in locking state, core-theaded type oil cylinder in retracted state,
Start to lift by crane, upper anchor is failure to actuate in locking state, release of casting anchor；Second step, core-theaded type cylinder piston rod stretch out, and upper anchor is with work
Stopper rod integrally moves up a lifting stroke；Third step casts anchor and locks steel strand wires；4th step, upper anchor unclamp steel strand wires；5th step,
Core-theaded type cylinder piston rod is withdrawn, and completes this circulation caisson wall slinging work；New circulation is begun to when lifting need to be continued；
Correction: when open caisson generates skew during sinking, then matching by lifting and the sinking movement of multiple lifting equipment
It closes, to rectify a deviation to open caisson, keeps open caisson cylinder in a vertical state；
5) caisson structure sinks down into designed elevation, and lubricant is discharged, and cement mortar is injected from the injected hole of section of jurisdiction and is cemented the well.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811485800.1A CN109723075A (en) | 2018-12-06 | 2018-12-06 | A kind of prefabrication and assembly construction controllable type open caisson construction method |
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| CN201811485800.1A CN109723075A (en) | 2018-12-06 | 2018-12-06 | A kind of prefabrication and assembly construction controllable type open caisson construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094206A (en) * | 2019-05-08 | 2019-08-06 | 南方电网调峰调频发电有限公司 | A kind of vertical shaft tunnel concrete liner structure and method |
| CN110820783A (en) * | 2019-11-13 | 2020-02-21 | 中铁第四勘察设计院集团有限公司 | Soft soil area bin-type mud-water balance open caisson underground space system |
| CN113338941A (en) * | 2021-07-07 | 2021-09-03 | 上海公路桥梁（集团）有限公司 | Construction method for deep well without drainage and assembled deep well |
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| JPH09268872A (en) * | 1996-03-28 | 1997-10-14 | Nippon Telegr & Teleph Corp <Ntt> | Construction method of shaft, and cutting edge having cutting blade |
| CN104563146A (en) * | 2014-12-31 | 2015-04-29 | 浙江杭州湾建筑集团有限公司 | Construction method for open caisson engineering of fixed and direct burial type rainwater and sewage pumping station |
| CN106088126A (en) * | 2016-06-30 | 2016-11-09 | 中国五冶集团有限公司 | A kind of open caisson deviation rectification construction method |
| CN108005096A (en) * | 2017-10-17 | 2018-05-08 | 北京中煤矿山工程有限公司 | A kind of suspension type wall submersion construction method for city vertical shaft construction |
| CN108360543A (en) * | 2018-05-03 | 2018-08-03 | 中铁上海工程局集团有限公司 | A kind of big pre-cast sink well structure of depth and its installation method |
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2018
- 2018-12-06 CN CN201811485800.1A patent/CN109723075A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09268872A (en) * | 1996-03-28 | 1997-10-14 | Nippon Telegr & Teleph Corp <Ntt> | Construction method of shaft, and cutting edge having cutting blade |
| CN104563146A (en) * | 2014-12-31 | 2015-04-29 | 浙江杭州湾建筑集团有限公司 | Construction method for open caisson engineering of fixed and direct burial type rainwater and sewage pumping station |
| CN106088126A (en) * | 2016-06-30 | 2016-11-09 | 中国五冶集团有限公司 | A kind of open caisson deviation rectification construction method |
| CN108005096A (en) * | 2017-10-17 | 2018-05-08 | 北京中煤矿山工程有限公司 | A kind of suspension type wall submersion construction method for city vertical shaft construction |
| CN108360543A (en) * | 2018-05-03 | 2018-08-03 | 中铁上海工程局集团有限公司 | A kind of big pre-cast sink well structure of depth and its installation method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094206A (en) * | 2019-05-08 | 2019-08-06 | 南方电网调峰调频发电有限公司 | A kind of vertical shaft tunnel concrete liner structure and method |
| CN110820783A (en) * | 2019-11-13 | 2020-02-21 | 中铁第四勘察设计院集团有限公司 | Soft soil area bin-type mud-water balance open caisson underground space system |
| CN113338941A (en) * | 2021-07-07 | 2021-09-03 | 上海公路桥梁（集团）有限公司 | Construction method for deep well without drainage and assembled deep well |
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