CN107524163B - A kind of steel cap sealing anchorage and tensioning construction method - Google Patents
A kind of steel cap sealing anchorage and tensioning construction method Download PDFInfo
- Publication number
- CN107524163B CN107524163B CN201710764820.1A CN201710764820A CN107524163B CN 107524163 B CN107524163 B CN 107524163B CN 201710764820 A CN201710764820 A CN 201710764820A CN 107524163 B CN107524163 B CN 107524163B
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- steel cap
- anchorage
- seal closure
- steel
- anchor plate
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/073—Tunnels or shuttering therefor assembled from sections individually sunk onto, or laid on, the water-bed, e.g. in a preformed trench
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
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- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention relates to immersed tube tunnel technical fields, anchorage and tensioning construction method are sealed more particularly to a kind of steel cap, steel cap sealing anchorage of the invention includes anchor plate and work anchor slab, work anchor slab is mounted on described anchor plate one end, it is also connected on the anchor plate and merges the seal closure that it is isolated with concrete region to be poured for the anchor slab cover that will work, the seal closure extends to the tensioning bore ends of steel cap, it further include temporary connection, before to concreting is carried out inside steel cap, using temporary connection by anchorage installation on steel cap, to guarantee the relatively fixed of anchorage, steel cap inner concrete is poured to go on smoothly, and temporary connection is removed before tensioning after the concrete has set, it is disconnected anchorage with steel cap, to guarantee in stretching construction, steel cap not will receive the influence of stretching force and deform, to ensure that The integral planar degree of steel cap after contacting steel cap with the waterstop of FS final spice end, reaches preferable water-stagnating effect.
Description
Technical field
The present invention relates to immersed tube tunnel technical field, in particular to a kind of steel cap sealing anchorage and tensioning construction side
Method.
Background technique
Port Zhuhai and Macao bridge island tunnel engineering seabed tunnel immersed tube is made of 33 tube couplings, using reinforced concrete structure, tube coupling
Prefabricated in precast plant's completion, successively transportation by driving installation docking realizes tunnel holing through after FS final spice construction.
FS final spice uses steel-shelled concrete structure, permanent Gina waterstop is peripherally arranged, with adjacent immersed tube tube coupling
After splicing, is sufficiently compressed by Gina waterstop and realize sealing, made to form binding cavity between FS final spice and adjacent tube coupling, will tie
It closes after the seawater in chamber empties and carries out postorder construction.
In order to ensure the water-stagnating effect of Gina waterstop, steel is set in the end of the adjacent tube coupling spliced with FS final spice
Cap.Steel cap needs to provide a flatness and the minimum end face of construction error, smoothly to realize that Gina is squeezed, realizes FS final spice
Load smoothly transmits between steel-shelled concrete and adjacent tube coupling reinforced concrete structure.
When making immersed tube tube coupling, concreting first is carried out to steel cap, then carries out prestressed stretch-draw, makes the heavy of production
Pipe meets globality requirement.Due in order to be fixed the position of tension ground tackle, inciting somebody to action when carrying out concreting to steel cap
It is pre-installed on steel cap, after steel cap concrete reaches predetermined strength, lays steel strand wires in tension ground tackle and carries out tensioning.
Since tension ground tackle is mounted on steel cap, when carrying out tensioning, steel cap can be born by steel strand wires bring stretching force,
Steel cap is caused to deform, when this splices tube coupling and FS final spice, the Gina waterstop leakproofness contacted with steel cap is deteriorated,
Sealing requirement cannot be reached, after causing immersed tube tube coupling and FS final spice to splice, due to can not be into there are binding cavity seepage problem
The construction of row postorder.
Summary of the invention
It is an object of the invention to: for during making immersed tube tube coupling, make since tension ground tackle is mounted on steel cap
In postorder stretching process steel cap can deform, and then cause the Gina waterstop contacted with steel cap can not sealing the problem of,
A kind of steel cap sealing anchorage and tensioning construction method are provided, steel cap sealing anchorage is by setting seal closure and temporarily connects
Tension ground tackle is connected on steel cap by fitting before concreting, after the completion of concreting, is detached from tension ground tackle,
And guarantee that slurries will not enter stretched zone when concreting, to ensure that going on smoothly for later period stretching process, not
The integral planar degree that will affect steel cap makes steel cap not deform, and guarantees that the later period contacts the Gina waterstop being bonded with steel cap and reaches
To good water-stagnating effect.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of steel cap seals anchorage, twists including being mounted in steel cap the anchor plate of concrete region to be poured and for connecting steel
The work anchor slab of line, the work anchor slab are mounted on described anchor plate one end, are also connected on the anchor plate for that will work
Anchor slab cover merges the seal closure that it is isolated with concrete region to be poured, which extends to the tensioning bore ends of steel cap, also
Including the temporary connection for connecting seal closure and steel cap, the temporary connection is after concreting before prestressed stretch-draw
It removes.
By the way that seal closure is arranged, the work anchor slab for being used in connection steel strand wires is isolated with concrete region to be poured, to protect
When demonstrate,proving concreting, slurries be may not flow on work anchor slab, and then will not be flowed into lashing out of arrangement steel strand wires hole
Area avoids influencing later period tensioning.
Temporary connection is arranged in this programme, and anchorage is fixed on steel cap by connector, so that in concreting, anchor
Tool will not move, to guarantee smooth casting concrete, and ensure that anchorage position is in stationary state, concreting is complete
At the temporary connection is removed before post-stretching, guarantee during tensioning construction, the stretching force of steel strand wires transmitting is by mixing
Solidifying soil is born, rather than is loaded on steel cap, to guarantee the integral planar degree of steel cap, guarantees that it does not deform, so that steel
Cap and FS final spice reach good water-stagnating effect when splicing.
As a preferred solution of the present invention, the temporary connection is L shape steel bar, and one end extends into seal closure, separately
One end is radially extended along tensioning hole, the rotation angle position of the temporary connection and steel cap and seal closure can breakaway-element connect.
The temporary connection of above structure form and connection type is taken, anchorage during casting concrete has both been able to achieve
It is connect with steel cap, guarantees that anchorage will not be subjected to displacement, while after the concrete has set before stretching construction, facing convenient for easily removing this
When connector, disconnect anchorage with steel cap.
As a preferred solution of the present invention, slurry-feeding hole is offered on the seal closure, offers pulp on the anchor plate
Hole is connected between the slurry-feeding hole and slurry outlet by offering the connectedness of through-hole, so that seal closure internal cavities and anchor pad
Intralamellar part cavity communicates.
The end of the slurry outlet perforation anchor plate and internal cavities, and the slurry outlet is corresponding with the through-hole of connectedness, institute
The another port for stating connectedness is corresponding with the slurry-feeding hole being provided on seal closure, so that inside seal closure internal cavities and anchor plate
Cavity communicates.
The connectedness is channel steel, and the notch of the channel steel communicates with slurry outlet and slurry-feeding hole respectively, and with seal closure and
The position sealing welding of anchor plate fitting.
Above structure mode is taken, after the completion of tensioning, toward while the slip casting of steel stranded wire penetrating adapter area, makes lashing area, anchor pad
The problem of occupying slurries simultaneously in plate and seal closure, avoid while opening up multiple grout holes, improves operating efficiency, protects
The integrity of tension ground tackle.
As a preferred solution of the present invention, the work anchor slab is equipped with the harness hole that steel strand wires pass through, cloth in harness hole
It is equipped with for by the work clip sheet of steel strand wires clamping.
The work clip sheet is wedge shape.
Before tensioning, steel strand wires are fixed after lashing for setting work clip sheet, carry out prestressed stretch-draw convenient for the later period.
As a preferred solution of the present invention, the anchor plate is the cylinder of both ends open, and one end is provided with for connecting work
Make the table top of anchor slab and seal closure, the other end connects the bellows for protecting steel strand wires.
Table top is set, is used to connect with work anchor slab with seal closure, while connecting bellows in the other end, protect in tensioning
In the process, steel strand wires can smoothly arrange, lashing, during preventing pre-production, cement mortar enters lashing area, influences subsequent
Operation.
As a preferred solution of the present invention, the table top is located at anchor plate end, including for installment work anchor slab
One table top and the second table top for connecting seal closure.Second table top is located on the outside of the first table top, and the second table top is higher by
First table top.
First table top is bonded with the end face of work anchor slab, is transmitted for carrying the anchor slab that works in later period stretching process
Stretching force, second table top is located on the outside of the first table top, and is higher than the first table top, for installing seal closure, along second
Face circumferential direction is equipped with multiple mounting holes, is connected and sealed with seal closure.
Above structure is taken, makes that there is certain gap between work anchor slab and seal closure, shadow will not be generated between the two
It rings, makes work anchor slab when bearing the stretching force of steel strand wires transmitting, deformation occurs does not interfere with second for the first work top
Face, to guarantee that the sealing performance of the second table top is unaffected.
As a preferred solution of the present invention, the seal closure is mounted on anchor plate, and installation position is provided with sealing copper
Ring.
The sealing copper ring is enclosed along mounting surface one to be arranged, and the binding face of seal closure and anchor plate is made to pass through the sealing whole circle of copper ring
Sealing guarantees to be tightly connected between seal closure and anchor plate, effectively slurries is avoided to penetrate into.
As a preferred solution of the present invention, the anchor plate and bellows junction are enclosed with thermoplastic set.
Thermoplastic set is set, guarantees the leakproofness of anchor plate and bellows junction, prevents the cement slurry in outside from entering and wears
Beam area influences the arrangement of steel strand wires during prestressed stretch-draw.
As a preferred solution of the present invention, the seal closure is cylindrical tube shape.
As a preferred solution of the present invention, concrete region to be poured is provided with spiral bar.
Spiral bar is set, increases the bearing capacity of anchor plate, during guaranteeing prestressed stretch-draw, work anchor slab and anchor plate
Structural stability.
Accordingly, close using steel cap as described above the present invention also provides a kind of steel cap tensioning construction method
When sealing off and covering anchorage tool carries out tensioning, comprising the following steps:
A, install anchorage, using temporary connection by anchorage installation on steel cap；
B, it pours, to progress concreting inside steel cap；
C, stretching construction removes temporary connection, and to prestress wire after concrete strength reaches design requirement
Lashing is carried out, lashing completes post-stretching to design requirement；
D, tensioning grouting behind shaft or drift lining carries out slip casting to prestressed stretch-draw region, completes immersed tube main body and pours；
E, lashing area slip casting carries out slip casting to prestress wire layout area and seal closure.
Aforesaid way is taken, before to concreting is carried out inside steel cap, anchorage installation is existed using temporary connection
On steel cap, to guarantee the relatively fixed of anchorage, pours steel cap inner concrete and go on smoothly, and open after the concrete has set
Temporary connection is removed before drawing, and is disconnected anchorage with steel cap, to guarantee in stretching construction, steel cap not will receive tensioning
The influence of power and deform, to ensure that the integral planar degree of steel cap, when splicing immersed tube tube coupling and FS final spice, steel cap with
It is bonded closely between Gina waterstop, reaches preferable water-stagnating effect.
Preferably, in the step a, injecting glue area is arranged in the seal closure and steel cap contact site, in injecting glue area
Carry out injecting glue sealing, the injecting glue area be sealing cover outer wall circumferential direction along the whole circle contact site of steel cap, while to seal closure with
Gap between anchor plate carries out slip casting sealing.
Aforesaid way is taken, is avoided in steel cap concreting, spillage problem occurs for sealing anchorage, to cause coagulation
Soil blocking anchorage, influences prestress wire lashing, guarantees that the processes such as subsequent lashing, tensioning are gone on smoothly.
Preferably, in the step e, slurry-feeding hole and slurry outlet are offered respectively on seal closure and anchor plate, it is described close
It is also connected with connectedness on sealing cover, the through-hole of connection slurry-feeding hole and slurry outlet is offered on the connectedness, is made inside seal closure
Cavity is communicated with anchor plate internal cavities.
The end of the slurry outlet perforation anchor plate and internal cavities, and the slurry outlet is corresponding with the through-hole of connectedness, institute
The another port for stating connectedness is corresponding with the slurry-feeding hole being provided on seal closure, so that inside seal closure internal cavities and anchor plate
Cavity communicates.
The connectedness is channel steel, and the notch of the channel steel communicates with slurry outlet and slurry-feeding hole respectively, and with seal closure and
The position sealing welding of anchor plate fitting.
Above structure mode is taken, in prestress pipe (lashing area) mud jacking, anchorage energy pulp is sealed, slurries is enable to press
Full seal closure improves operating efficiency the problem of avoiding while opening up multiple grout holes, protects the intact of tension ground tackle
Property.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, by setting seal closure, work anchor slab is isolated with concrete region to be poured, guarantee concreting smoothly into
Row, avoids slurries from being flowed into work anchor slab and steel stranded wire penetrating adapter area, plugs anchorage, influence later period tensioning；
2, to inside steel cap carry out concreting before, using temporary connection by anchorage installation on steel cap, thus
Guarantee the relatively fixed of anchorage, pour steel cap inner concrete and go on smoothly, and removes face before tensioning after the concrete has set
When connector, be disconnected anchorage with steel cap, to guarantee in stretching construction, steel cap not will receive the influence of stretching force and
Deformation, to ensure that the integral planar degree of steel cap, when splicing immersed tube tube coupling and FS final spice, steel cap and Gina waterstop it
Between be bonded close, reach preferable water-stagnating effect；
3, implantation glass glue at the gap between seal closure and steel cap and the gap between seal closure and anchor plate, energy
It avoids in steel cap concreting, spillage problem occurs for sealing anchorage, so that concrete be caused to block anchorage, influences prestressing force
Steel stranded wire penetrating adapter guarantees that the processes such as subsequent lashing, tensioning are gone on smoothly.
Detailed description of the invention
Fig. 1 is that the steel cap of the present embodiment seals the structural schematic diagram of anchorage.
Fig. 2 is the left view of Fig. 1.
The anchor slab marked in the figure: 1- works, 2- anchor plate, 3- seal closure, 4- temporary connection, 41- connecting portion, 5- steel
Cap, 51- tensioning hole, 6- slurry-feeding hole, 7- slurry outlet, 8- injecting glue area, 9- harness hole, 10- work clip sheet, 11- table top, 111- first
Table top, the second table top of 112-, 12- bellows, 13- sealing copper ring, 14- thermoplastic set, 15- spiral bar, 16- connection bolt, 17- are worn
Beam area, 18- steel strand wires, the concrete region to be poured 19-, 20- connectedness.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
Embodiment 1
As depicted in figs. 1 and 2, steel cap seals anchorage, the anchor plate including being mounted on concrete region 19 to be poured in steel cap 5
2 and the work anchor slab 1 for connecting steel strand wires 18, the work anchor slab 1 be mounted on described 2 one end of anchor plate, the anchor plate 2
On be also connected with for will work anchor slab 1 cover merge it is isolated with concrete region 19 to be poured seal closure 3, the seal closure 3
51 end of tensioning hole for extending to steel cap 5 further includes the temporary connection 4 for connecting seal closure 3 and steel cap, described temporarily to connect
Fitting 4 is removed before prestressed stretch-draw after pouring mixed mud.
By the way that seal closure 3 is arranged, the work anchor slab 1 for being used in connection steel strand wires 18 is isolated with concrete region 19 to be poured,
When to guarantee concreting, slurries be may not flow on work anchor slab 1, and then will not be flowed out of arrangement steel strand wires 18 hole
Enter to lashing area 17, avoids influencing later period tensioning.
In the present embodiment, by the way that temporary connection 4 is arranged, anchorage is fixed on steel cap 5 by temporary connection 4, so that
In concreting, anchorage will not be moved, to guarantee smooth casting concrete, and ensured that anchorage position is in and fixed
State is removed the temporary connection 4, is guaranteed in tensioning construction process before prestressed stretch-draw after the completion of concreting
In, the stretching force that steel strand wires 18 transmit is born by concrete, rather than is loaded on steel cap 5, to guarantee that the entirety of steel cap 5 is flat
Face degree guarantees that it does not deform, and when splicing immersed tube tube coupling and FS final spice, is bonded between steel cap and Gina waterstop tight
It is close, reach preferable water-stagnating effect.
As one of preferred embodiment, the temporary connection 4 is L shape steel bar, and one end is into seal closure 3
Extend, the other end is radially extended along tensioning hole 51, and rotation angle position and the steel cap 5 and seal closure 3 of the temporary connection 4 can disconnect
Formula connection forms connecting portion 41, provisional that anchorage is connected on steel cap using temporary connection 41, had both been able to achieve and has poured
It builds anchorage in Concrete to connect with steel cap, guarantees that anchorage will not be subjected to displacement, while stretching construction after the concrete has set
Before, convenient for easily removing the temporary connection, disconnect anchorage with steel cap.
As one of preferred embodiment, slurry-feeding hole 6 is offered on seal closure 3, is offered on the anchor plate 2
Slurry outlet 7 is connected between the slurry-feeding hole 6 and slurry outlet 7 by offering the connectedness 20 of through-hole, so that inside seal closure 3
Cavity is communicated with 2 internal cavities of anchor plate.
The slurry outlet 7 penetrates through end and the internal cavities of anchor plate 2, and the through-hole pair of the slurry outlet 7 and connectedness 20
Answer, the another port of the connectedness 20 is corresponding with the slurry-feeding hole 6 being provided on seal closure 3 so that 3 internal cavities of seal closure with
2 internal cavities of anchor plate communicate.
The connectedness 20 is channel steel, and the notch of the channel steel communicates with slurry outlet 7 and slurry-feeding hole 6 respectively, and with sealing
The position welding that cover 3 and anchor plate 2 are bonded, forms integrated sealing structure.
Above structure mode is taken, after the completion of tensioning, toward while the slip casting of steel stranded wire penetrating adapter area, makes lashing area, anchor pad
The problem of occupying slurries simultaneously in plate and seal closure, avoid while opening up multiple grout holes, improves operating efficiency, protects
The integrity of tension ground tackle.
As one such embodiment, the work anchor slab 1 is equipped with the harness hole 9 that steel strand wires 18 pass through, harness
It is disposed in hole 9 for by the work clip sheet 10 of 18 clamping of steel strand wires.
Further, work clip sheet 10 is wedge shape, and wedge-shaped work clip sheet is arranged, after lashing, before tensioning, by steel strand wires into
Row is fixed, and carries out prestressed stretch-draw convenient for the later period.
As one such embodiment, the anchor plate 2 is the cylinder of both ends open, and one end is provided with for connecting
The table top 11 of work anchor slab 1 and seal closure 3, the other end connect the bellows 12 for protecting steel strand wires 18.
Table top 11 is set, and be used for and work anchor slab 1 and the connection of seal closure 3, while connecting bellows 12 in the other end, guarantees
In stretching process steel strand wires 18 can smoothly arrange, lashing, during preventing pre-production, cement mortar enters lashing area
17, influence subsequent job.
As one of preferred embodiment, table top 11 is located at 2 end of anchor plate, including is used for installment work anchor slab
1 the first table top 111 and the second table top 112 for connecting seal closure 3, second table top 112 are located at outside the first table top 111
Side, and the second table top 112 is higher by the first table top 111.
First table top 111 is bonded with the end face of work anchor slab 1, for carrying the anchor slab 1 that works in later period stretching process
The stretching force transmitted, second table top 112 is located at 111 outside of the first table top, and is higher than the first table top 111, for installing
Seal closure 3 is equipped with multiple mounting holes along 112 circumferential direction of the second table top, is connected and sealed with seal closure 3.
Above structure is taken, makes that there is certain gap between work anchor slab and seal closure, shadow will not be generated between the two
It rings, makes work anchor slab when bearing the stretching force of steel strand wires transmitting, deformation occurs does not interfere with second for the first work top
Face, to guarantee that the sealing performance of the second table top is unaffected.
As one of embodiment, the seal closure 3 is mounted on anchor plate 2, and installation position is provided with sealing
Copper ring 13, sealing copper ring 13 is enclosed along mounting surface one to be arranged, and keeps seal closure 3 and the binding face of anchor plate 2 whole by sealing copper ring 13
Circle sealing guarantees to be tightly connected between seal closure 3 and anchor plate 2, effectively slurries is avoided to penetrate into.
The anchor plate 2 and 12 junction of bellows are enclosed with thermoplastic set 14.
Thermoplastic is set and covers 14, guarantees the leakproofness of anchor plate 2 and 12 junction of bellows, prevents the cement slurry in outside from entering
To lashing area 17, the arrangement of steel strand wires 18 during prestressed stretch-draw is influenced.
Further, seal closure 3 is cylindrical tube shape.
As one of preferred embodiment, concrete region 19 to be poured is provided with spiral bar 15, and spiral bar is arranged
15, increase the bearing capacity of anchor plate 2, during guaranteeing prestressed stretch-draw, the structural stability of work anchor slab 1 and anchor plate 2.
Work anchor slab is isolated with concrete region to be poured by setting seal closure in the present embodiment, guarantees concreting
It goes on smoothly, avoids slurries from being flowed into work anchor slab and steel stranded wire penetrating adapter area, plug anchorage, influence later period tensioning.
Embodiment 2
As depicted in figs. 1 and 2, steel cap tensioning construction method, using in such as embodiment 1 steel cap seal anchorage into
When row tensioning, comprising the following steps:
A, install anchorage, using temporary connection 4 by anchorage installation on steel cap 5；
B, it pours, concreting is carried out to the concrete region to be poured 19 inside steel cap 5；
C, stretching construction removes temporary connection 4, and to prestress steel twist after concrete strength reaches design requirement
Line 18 carries out lashing, and lashing completes post-stretching to design requirement；
D, tensioning grouting behind shaft or drift lining carries out slip casting to prestressed stretch-draw region, completes immersed tube main body and pours；
E, 17 slip casting of lashing area carries out slip casting to 18 layout area of prestress wire and seal closure 3.
Above-mentioned construction procedure is taken, before to concreting is carried out inside steel cap, is pacified anchorage using temporary connection
On steel cap, to guarantee the relatively fixed of anchorage, pours steel cap inner concrete and go on smoothly, and in concrete setting
Temporary connection is removed before post-stretching, is disconnected anchorage with steel cap, to guarantee in stretching construction, steel cap not will receive
The influence of stretching force and deform, to ensure that the integral planar degree of steel cap, when splicing immersed tube tube coupling and FS final spice, steel cap
It is bonded between Gina waterstop closely, reaches preferable water-stagnating effect.
Using temporary connection 4 by anchorage installation when on steel cap 5, in order to guarantee that slurries leakage does not occur for seal closure 3
The problem of, injecting glue area 8 is set in seal closure 3 and 5 contact site of steel cap, carries out injecting glue sealing, the injecting glue area 8 in injecting glue area 8
It is 3 outer wall circumferential direction of seal closure along the whole circle contact site of steel cap 5, while the gap between seal closure 3 and anchor plate 2 is carried out
Slip casting sealing.
Aforesaid way is taken, is avoided in steel cap concreting, spillage problem occurs for sealing anchorage, to cause coagulation
Soil blocking anchorage, influences prestress wire lashing, guarantees that the processes such as subsequent lashing, tensioning are gone on smoothly.
When carrying out slip casting to lashing area 17, slurry-feeding hole 6 and slurry outlet are offered respectively on seal closure 3 and anchor plate 2
7, connectedness 20 is also connected on the seal closure 3, and the logical of connection slurry-feeding hole 6 and slurry outlet 7 is offered on the connectedness 20
Hole communicates 3 internal cavities of seal closure with 2 internal cavities of anchor plate.
Slurry outlet 7 penetrates through end and the internal cavities of anchor plate 2, and the slurry outlet 7 is corresponding with the through-hole of connectedness 20, institute
The another port for stating connectedness 20 is corresponding with the slurry-feeding hole 6 being provided on seal closure 3, so that 3 internal cavities of seal closure and anchor pad
2 internal cavities of plate communicate.
The connectedness 20 is channel steel, and the notch of the channel steel communicates with slurry outlet and slurry-feeding hole respectively, and with seal closure 3
The position sealing welding being bonded with anchor plate 2.
Above structure mode is taken, in prestress pipe (lashing area) mud jacking, anchorage energy pulp is sealed, slurries is enable to press
Full seal closure improves operating efficiency the problem of avoiding while opening up multiple grout holes, protects the intact of tension ground tackle
Property.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of steel cap seals anchorage, which is characterized in that anchor plate and use including being mounted on concrete region to be poured in steel cap
In the work anchor slab of connection steel strand wires, the work anchor slab is mounted on described anchor plate one end, is also connected on the anchor plate
For that will work, anchor slab cover merges the seal closure that it is isolated with concrete region to be poured, which extends to the tensioning of steel cap
Bore ends, further include the temporary connection for connecting seal closure and steel cap, and the temporary connection is pre- after concreting
It is removed before stress tension.
2. steel cap according to claim 1 seals anchorage, which is characterized in that the temporary connection is L shape steel bar, one
It holds and extends into seal closure, the other end is radially extended along tensioning hole, the rotation angle position of the temporary connection and steel cap and sealing
Cover can breakaway-element connection.
3. steel cap according to claim 1 seals anchorage, which is characterized in that the anchor plate is the cylinder of both ends open,
One end is provided with the table top for connecting work anchor slab and seal closure, and the other end connects the bellows for protecting steel strand wires.
4. steel cap according to claim 3 seals anchorage, which is characterized in that the table top is located at anchor plate end, including
The second table top for the first table top of installment work anchor slab and for connecting seal closure, second table top are located at the first table top
Outside, and the second table top is higher by the first table top.
5. steel cap described in one of -4 seals anchorage according to claim 1, which is characterized in that the seal closure is mounted on anchor plate
On, installation position is provided with sealing copper ring.
6. steel cap according to claim 3 or 4 seals anchorage, which is characterized in that the anchor plate and bellows junction
It is enclosed with thermoplastic set.
7. steel cap described in one of -4 seals anchorage according to claim 1, which is characterized in that concrete region to be poured is provided with spiral shell
Revolve muscle.
8. a kind of steel cap tensioning construction method is carried out using the steel cap sealing anchorage as described in one of claim 1-6
When tensioning, comprising the following steps:
A, install anchorage, using temporary connection by anchorage installation on steel cap；
B, it pours, to progress concreting inside steel cap；
C, stretching construction removes temporary connection, and carry out to prestress wire after concrete strength reaches design requirement
Lashing, lashing complete post-stretching to design requirement；
D, tensioning grouting behind shaft or drift lining carries out slip casting to prestressed stretch-draw region, completes immersed tube main body and pours；
E, lashing area slip casting carries out slip casting to prestress wire layout area and seal closure.
9. steel cap tensioning construction method according to claim 8, which is characterized in that described in the step a
Injecting glue area is arranged in seal closure and steel cap contact site, carries out injecting glue sealing in injecting glue area, the injecting glue area is outside seal closure
Wall circumferential direction carries out slip casting sealing along the whole circle contact site of steel cap, while to the gap between seal closure and anchor plate.
10. steel cap tensioning construction method according to claim 8, which is characterized in that offered on seal closure
Slurry-feeding hole offers slurry outlet on anchor plate, and connectedness, the company of offering on the connectedness are also connected on the seal closure
The through-hole of logical slurry-feeding hole and slurry outlet, communicates seal closure internal cavities with anchor plate internal cavities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710764820.1A CN107524163B (en) | 2017-08-30 | 2017-08-30 | A kind of steel cap sealing anchorage and tensioning construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710764820.1A CN107524163B (en) | 2017-08-30 | 2017-08-30 | A kind of steel cap sealing anchorage and tensioning construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107524163A CN107524163A (en) | 2017-12-29 |
| CN107524163B true CN107524163B (en) | 2019-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710764820.1A Expired - Fee Related CN107524163B (en) | 2017-08-30 | 2017-08-30 | A kind of steel cap sealing anchorage and tensioning construction method |
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| CN113136892B (en) * | 2021-05-18 | 2024-06-28 | 中国五冶集团有限公司 | Pipe joint splicing device, splicing structure and splicing method of assembled pipe gallery |
| CN113502875A (en) * | 2021-07-06 | 2021-10-15 | 广西华硕建设工程有限公司 | Water intake pump room water inlet transformation construction method and auxiliary tool thereof |
| CN113585089A (en) * | 2021-08-30 | 2021-11-02 | 中庆建设有限责任公司 | Stretch-draw ground tackle |
| CN114541382A (en) * | 2022-01-26 | 2022-05-27 | 浙江中桥预应力设备有限公司 | Anticorrosive impervious subsides formula anchor backing plate stock structure for building |
| CN114922065A (en) * | 2022-05-31 | 2022-08-19 | 保利长大工程有限公司 | Installation process of anchorage device assembly for bridge |
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| CN1268818C (en) * | 2004-08-18 | 2006-08-09 | 上海市隧道工程轨道交通设计研究院 | Method of connecting steel inhaul cable for tubulation joint |
| CN103046546B (en) * | 2012-11-23 | 2015-03-04 | 浙江中桥预应力设备有限公司 | Detachable anchor cable and construction process thereof |
| JP5935756B2 (en) * | 2013-05-20 | 2016-06-15 | Ｊｆｅスチール株式会社 | Seismic reinforcement structure for joints of submerged tunnels. |
| CN106988346B (en) * | 2017-03-24 | 2019-12-31 | 中国交通建设股份有限公司 | Immersed tube tunnel final joint, prefabricating method and mounting method |
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