CN107524163A - 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
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- CN107524163A CN107524163A CN201710764820.1A CN201710764820A CN107524163A CN 107524163 A CN107524163 A CN 107524163A CN 201710764820 A CN201710764820 A CN 201710764820A CN 107524163 A CN107524163 A CN 107524163A
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- steel cap
- seal closure
- anchorage
- 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
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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
- E02D29/16—Arrangement or construction of joints in foundation structures
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- 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)
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- General Life Sciences & Earth Sciences (AREA)
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- Structural Engineering (AREA)
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Abstract
The present invention relates to immersed tube tunnel technical field,Anchorage and tensioning construction method are sealed more particularly to a kind of steel cap,The steel cap sealing anchorage of the present invention includes anchor plate and work anchor slab,Work anchor slab is arranged on described anchor plate one end,It is also associated with merging the seal closure for making it with concrete region to be poured isolate for the anchor slab cover that will work on the anchor plate,The seal closure extends to the tensioning bore ends of steel cap,Also include temporary connection,Before to carrying out concreting inside steel cap,Using temporary connection by anchorage installation on steel cap,So as to ensure being relatively fixed for anchorage,Steel cap inner concrete is poured to be smoothed out,And remove temporary connection before tensioning after the concrete has set,Anchorage is set to be disconnected with steel cap,So as to ensure in stretching construction,Steel cap will not be influenceed and be deformed by stretching force,So as to ensure that the integral planar degree of steel cap,After steel cap is contacted with the waterstop of FS final spice end,Reach preferable water-stagnating effect.
Description
Technical field
The present invention relates to immersed tube tunnel technical field, more particularly to a kind of steel cap sealing anchorage and tensioning construction side
Method.
Background technology
Port Zhuhai and Macao bridge island tunnel engineering seabed tunnel immersed tube is made up of 33 tube couplings, using reinforced concrete structure, tube coupling
In precast plant, completion is prefabricated, successively transportation by driving installation docking, and tunnel holing through is realized after FS final spice construction.
FS final spice uses steel-shelled concrete structure, peripherally sets permanent Gina waterstops, with adjacent immersed tube tube coupling
After splicing, fully compressed by Gina waterstops and realize sealing, made to form binding cavity between FS final spice and adjacent tube coupling, will tie
Postorder construction is carried out after closing the seawater emptying in chamber.
In order to ensure the water-stagnating effect of Gina waterstops, in the end set steel 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 extruded, realizes FS final spice
Load smooth-going is transmitted 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, make the heavy of making
Pipe meets globality requirement.Due to when carrying out concreting to steel cap, in order to which the position of tension ground tackle is fixed, inciting somebody to action
It is pre-installed on steel cap, and after steel cap concrete reaches predetermined strength, steel strand wires progress tensioning is laid in tension ground tackle.
Because tension ground tackle is arranged on steel cap, when carrying out tensioning, steel cap can bear the stretching force brought by steel strand wires,
Steel cap is caused to deform, when this make it that tube coupling splices with FS final spice, the Gina waterstops sealing contacted with steel cap is deteriorated,
Sealing requirement can not be reached, after causing immersed tube tube coupling to splice with FS final spice, can not be entered due to binding cavity seepage problem be present
Row postorder is constructed.
The content of the invention
It is an object of the invention to：For during immersed tube tube coupling is made, making because tension ground tackle is arranged on steel cap
In postorder stretching process steel cap can deform, and then cause the Gina waterstops that are contacted with steel cap can not sealing the problem of,
A kind of steel cap sealing anchorage and tensioning construction method are provided, the steel cap seals anchorage by setting seal closure and connecting temporarily
Fitting, tension ground tackle is connected on steel cap before concreting, after the completion of concreting, departs from tension ground tackle,
And ensure that slurries will not enter stretched zone during concreting, so as to ensure that being smoothed out for later stage stretching process, not
The integral planar degree of steel cap can be influenceed, steel cap is not deformed, ensures that the later stage contacts the Gina waterstops being bonded with steel cap and reached
To good water-stagnating effect.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
A kind of steel cap seals anchorage, including the anchor plate of concrete region to be poured and for connecting steel strand wires in steel cap
Work anchor slab, and the work anchor slab is arranged on described anchor plate one end, is also associated with being used for work anchor slab on the anchor plate
Cover, which merges, makes the seal closure that it isolates with concrete region to be poured, and the seal closure extends to the tensioning bore ends of steel cap, in addition to
For connecting the temporary connection of seal closure and steel cap, the temporary connection is torn open after concreting before prestressed stretch-draw
Remove.
By setting seal closure, the work anchor slab for being used in connection steel strand wires is isolated with concrete region to be poured, so as to protect
When demonstrate,proving concreting, slurries may not flow on work anchor slab, enter without being flowed into lashing out of arrangement steel strand wires hole
Area, avoid influenceing later stage tensioning.
This programme sets temporary connection, and anchorage is fixed on steel cap by connector so that in concreting, anchor
Tool will not be moved, and so as to ensure smooth casting concrete, and ensure that anchorage position is in stationary state, concreting is complete
The temporary connection is removed before into post-stretching, is ensured during tensioning construction, the stretching force of steel strand wires transmission is by mixing
Solidifying soil is born, rather than is carried on steel cap, so as to ensure the integral planar degree of steel cap, ensures that it does not deform so that steel
Cap reaches good water-stagnating effect when splicing with FS final spice.
As the preferred scheme of the present invention, the temporary connection is L-shaped steel bar, and its one end extends into seal closure, separately
One end radially extends along tensioning hole, the rotation angle position of the temporary connection and steel cap and seal closure can breakaway-element be connected.
The temporary connection of said structure form and connected mode is taken, the anchorage during casting concrete can be realized
It is connected with steel cap, ensures that anchorage will not be subjected to displacement, while after the concrete has set before stretching construction, is easy to easily to remove this and faces
When connector, anchorage is disconnected with steel cap.
As the preferred scheme of the present invention, slurry-feeding hole is offered on the seal closure, pulp is offered on the anchor plate
Hole, 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 insertion 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 opened on seal closure so that inside seal closure internal cavities and anchor plate
Cavity communicates.
The connectedness is channel-section steel, and the notch of the channel-section steel communicates with slurry outlet and slurry-feeding hole respectively, and with seal closure and
The position sealing welding of anchor plate fitting.
Said 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
Slurries are occupied simultaneously in plate and seal closure, the problem of avoiding while open up multiple grout holes, operating efficiency is improved, protects
The integrity of tension ground tackle.
As the preferred scheme of the present invention, the work anchor slab is provided with the wire harness hole that passes through of steel strand wires, cloth in wire harness hole
It is equipped with for by the work clip sheet of steel strand wires clamping.
The work clip sheet is wedge shape.
Work clip sheet is set, after lashing, before tensioning, steel strand wires are fixed, is easy to the later stage to carry out prestressed stretch-draw.
As the preferred scheme 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 is connected to protect the bellows of steel strand wires.
Table top is set, is used to connect with seal closure with work anchor slab, while bellows is connected in the other end, is protected in tensioning
During, steel strand wires can be arranged smoothly, lashing, and during preventing pre-production, cement mortar enters lashing area, influence follow-up
Operation.
As the preferred scheme 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 for the anchor slab that works, and is transmitted for carrying the anchor slab that worked in later stage 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 provided with multiple mounting holes, is connected and sealed with seal closure.
Said structure is taken, makes that there is certain space between work anchor slab and seal closure, shadow will not be produced between the two
Ring, make work anchor slab when bearing the stretching force of steel strand wires transmission, the first work top, which deforms upon, does not interfere with second
Face, so as to ensure that the sealing property of the second table top is unaffected.
As the preferred scheme of the present invention, the seal closure is arranged on anchor plate, and sealing copper is provided with installation position
Ring.
The sealing copper ring encloses along mounting surface one to be set, and makes the binding face of seal closure and anchor plate by sealing the whole circle of copper ring
Sealing, ensure to be tightly connected between seal closure and anchor plate, effectively avoid slurries from penetrating into.
As the preferred scheme of the present invention, anchor plate and the bellows junction is enclosed with thermoplastic set.
Thermoplastic set is set, ensures the sealing of anchor plate and bellows junction, prevents the cement mortar in outside enters from wearing
Beam area, influence the arrangement of steel strand wires during prestressed stretch-draw.
As the preferred scheme of the present invention, the seal closure is cylindrical tube shape.
As the preferred scheme 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 ensureing prestressed stretch-draw, work anchor slab and anchor plate
Structural stability.
Accordingly, it is close using steel cap as described above present invention also offers a kind of steel cap tensioning construction method
When sealing off and covering anchorage tool carries out tensioning, comprise the following steps：
A, install anchorage, using temporary connection by anchorage installation on steel cap；
B, pour, to carrying out concreting inside steel cap；
C, stretching construction, after concrete strength reaches design requirement, temporary connection is removed, and prestress wire is carried out
Lashing, lashing complete post-stretching to design requirement；
D, tensioning grouting behind shaft or drift lining, slip casting is carried out to prestressed stretch-draw region, completes immersed tube main body and pour；
E, lashing area slip casting, slip casting is carried out to prestress wire layout area and seal closure.
Aforesaid way is taken, before to carrying out concreting inside steel cap, anchorage installation is existed using temporary connection
On steel cap, so as to ensure being relatively fixed for anchorage, pour steel cap inner concrete and be smoothed out, and open after the concrete has set
Temporary connection is removed before drawing, anchorage is disconnected with steel cap, so as to ensure that, in stretching construction, steel cap will not be by tensioning
The influence of power and deform, so as 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 waterstops, reaches preferable water-stagnating effect.
Preferably, in the step a, the seal closure sets injecting glue area with the steel cap contact site, in injecting glue area
Carry out injecting glue sealing, the injecting glue area for 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, so as to cause coagulation
Soil blocks anchorage, influences prestress wire lashing, ensures that the processes such as follow-up lashing, tensioning are smoothed out.
Preferably, in the step e, slurry-feeding hole and slurry outlet are offered respectively on seal closure and anchor plate, it is described close
Connectedness is also associated with sealing cover, the through hole of connection slurry-feeding hole and slurry outlet is offered on the connectedness, is made inside seal closure
Cavity communicates with anchor plate internal cavities.
The end of the slurry outlet insertion 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 opened on seal closure so that inside seal closure internal cavities and anchor plate
Cavity communicates.
The connectedness is channel-section steel, and the notch of the channel-section steel communicates with slurry outlet and slurry-feeding hole respectively, and with seal closure and
The position sealing welding of anchor plate fitting.
Said structure mode is taken, in prestress pipe（Lashing area）During mud jacking, anchorage energy pulp is sealed, slurries is pressed
Full seal closure, the problem of avoiding while open up multiple grout holes, improves operating efficiency, protects the intact of tension ground tackle
Property.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, by setting seal closure, work anchor slab is isolated with concrete region to be poured, ensure that concreting is smoothed out, keep away
Exempt from slurries and be flowed into work anchor slab and steel stranded wire penetrating adapter area, plug anchorage, influence later stage tensioning；
2nd, to inside steel cap carry out concreting before, using temporary connection by anchorage installation on steel cap, so as to ensure
Anchorage is relatively fixed, and is poured steel cap inner concrete and is smoothed out, and removes before tensioning connect temporarily after the concrete has set
Fitting, anchorage is set to be disconnected with steel cap, so as to ensure that, in stretching construction, steel cap will not be influenceed and become by stretching force
Shape, so as to ensure that the integral planar degree of steel cap, when making immersed tube tube coupling with FS final spice splicing, between steel cap and Gina waterstops
Fitting is close, reaches preferable water-stagnating effect；
3rd, implantation glass glue at the gap between seal closure and steel cap, and gap between seal closure and anchor plate, is avoided that
In steel cap concreting, spillage problem occurs for sealing anchorage, so as to cause concrete to block anchorage, influences prestress steel twist
Line lashing, ensure that the processes such as follow-up lashing, tensioning are smoothed out.
Brief description of the drawings
Fig. 1 is that the steel cap of the present embodiment seals the structural representation of anchorage.
Fig. 2 is Fig. 1 left view.
Marked in figure：1- work anchor slabs, 2- anchor plates, 3- seal closures, 4- temporary connections, 41- connecting portions, 5- steel
Cap, 51- tensioning hole, 6- slurry-feeding holes, 7- slurry outlets, 8- injecting glues area, 9- wire harness hole, 10- work clip sheets, 11- table tops, 111- first
Table top, the table tops of 112- second, 12- bellowss, 13- sealing copper rings, 14- thermoplastic sets, 15- spiral bars, 16- connecting bolts, 17- are worn
Beam area, 18- steel strand wires, 19- concrete regions to be poured, 20- connectednesses.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
Embodiment 1
As depicted in figs. 1 and 2, steel cap sealing anchorage, including in steel cap 5 concrete region 19 to be poured the He of anchor plate 2
For connecting the work anchor slab 1 of steel strand wires 18, the work anchor slab 1 is arranged on described one end of anchor plate 2, on the anchor plate 2
It is also associated with covering for the anchor slab 1 that will work and merges the seal closure 3 for making it isolate with concrete region 19 to be poured, the seal closure 3 prolongs
The end of tensioning hole 51 of steel cap 5 is extended, in addition to for connecting the temporary connection 4 of seal closure 3 and steel cap, the interim connection
Part 4 is removed before prestressed stretch-draw after pouring mixed mud.
By setting seal closure 3, the work anchor slab 1 for being used in connection steel strand wires 18 is isolated with concrete region 19 to be poured,
During so as to ensure concreting, slurries may not flow on work anchor slab 1, enter without being flowed out of arrangement steel strand wires 18 hole
Enter to lashing area 17, avoid influenceing later stage tensioning.
In the present embodiment, by setting temporary connection 4, anchorage is fixed on steel cap 5 by temporary connection 4 so that
In concreting, anchorage will not be moved, and so as to ensure smooth casting concrete, and ensure that anchorage position is in and fix
State, the temporary connection 4 is removed after the completion of concreting before prestressed stretch-draw, is ensured in tensioning construction process
In, the stretching force that steel strand wires 18 transmit is born by concrete, rather than is carried on steel cap 5, so as to ensure that the entirety of steel cap 5 is put down
Face degree, ensure that it does not deform, when making immersed tube tube coupling with FS final spice splicing, be bonded between steel cap and Gina waterstops tight
It is close, reach preferable water-stagnating effect.
As one of which preferred embodiment, the temporary connection 4 is L-shaped steel bar, and its one end is into seal closure 3
Extension, the other end radially extend 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 connects, and forms connecting portion 41, provisional that anchorage is connected on steel cap using temporary connection 41, can realize and pour
Build anchorage in Concrete to be connected with steel cap, ensure that anchorage will not be subjected to displacement, while stretching construction after the concrete has set
Before, it is easy to easily remove the temporary connection, anchorage is disconnected with steel cap.
As one of which preferred embodiment, slurry-feeding hole 6 is offered on seal closure 3, is offered on the anchor plate 2
Slurry outlet 7, 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 communicates with the internal cavities of anchor plate 2.
The slurry outlet 7 penetrates end and the internal cavities of anchor plate 2, and the through hole pair of the slurry outlet 7 and connectedness 20
Should, the another port of the connectedness 20 is corresponding with the slurry-feeding hole 6 being opened on seal closure 3 so that the internal cavities of seal closure 3 and
The internal cavities of anchor plate 2 communicate.
The connectedness 20 is channel-section steel, and the notch of the channel-section 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.
Said 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
Slurries are occupied simultaneously in plate and seal closure, the problem of avoiding while open up multiple grout holes, operating efficiency is improved, protects
The integrity of tension ground tackle.
As a kind of embodiment therein, the work anchor slab 1 is provided with the wire harness hole 9 that steel strand wires 18 pass through, wire harness
It is disposed with hole 9 for by the work clip sheet 10 of the clamping of steel strand wires 18.
Further, work clip sheet 10 is wedge shape, sets wedge-shaped work clip sheet, after lashing, before tensioning, steel strand wires are entered
Row is fixed, and is easy to the later stage to carry out prestressed stretch-draw.
As a kind of embodiment therein, 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 are connected to protect the bellows 12 of steel strand wires 18.
Table top 11 is set, is used for and work anchor slab 1 and seal closure 3 connects, while bellows 12, guarantee are connected in the other end
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 which preferred embodiment, table top 11 is located at the end of anchor plate 2, including 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 for the anchor slab 1 that works, for carrying the anchor slab 1 that worked in later stage stretching process
The stretching force transmitted, second table top 112 is located at the outside of the first table top 111, and is higher than the first table top 111, for installing
Seal closure 3, multiple mounting holes are provided with along the circumferential direction of the second table top 112, are connected and sealed with seal closure 3.
Said structure is taken, makes that there is certain space between work anchor slab and seal closure, shadow will not be produced between the two
Ring, make work anchor slab when bearing the stretching force of steel strand wires transmission, the first work top, which deforms upon, does not interfere with second
Face, so as to ensure that the sealing property of the second table top is unaffected.
As one of which embodiment, the seal closure 3 is arranged on anchor plate 2, and sealing is provided with installation position
Copper ring 13, sealing copper ring 13 are enclosed along mounting surface one and set, and make the binding face of seal closure 3 and anchor plate 2 whole by sealing copper ring 13
Circle sealing, ensure to be tightly connected between seal closure 3 and anchor plate 2, effectively avoid slurries from penetrating into.
Anchor plate 2 and bellows 12 junction is enclosed with thermoplastic set 14.
Set thermoplastic to cover 14, ensure the sealing of anchor plate 2 and the junction of bellows 12, prevent the cement mortar in outside from entering
To lashing area 17, the arrangement of steel strand wires 18 during prestressed stretch-draw is influenceed.
Further, seal closure 3 is cylindrical tube shape.
As one of which preferred embodiment, concrete region 19 to be poured is provided with spiral bar 15, sets spiral bar
15, increase the bearing capacity of anchor plate 2, during ensureing prestressed stretch-draw, the structural stability of work anchor slab 1 and anchor plate 2.
The present embodiment makes work anchor slab isolate with concrete region to be poured, ensures concreting by setting seal closure
It is smoothed out, avoids slurries from being flowed into work anchor slab and steel stranded wire penetrating adapter area, plug anchorage, influence later stage tensioning.
Embodiment 2
As depicted in figs. 1 and 2, steel cap tensioning construction method, opened using the steel cap sealing anchorage in such as embodiment 1
During drawing, comprise the following steps：
A, install anchorage, using temporary connection 4 by anchorage installation on steel cap 5；
B, pour, concreting is carried out to the concrete region to be poured 19 inside steel cap 5；
C, stretching construction, after concrete strength reaches design requirement, temporary connection 4 is removed, and to prestress wire 18
Lashing is carried out, lashing completes post-stretching to design requirement；
D, tensioning grouting behind shaft or drift lining, slip casting is carried out to prestressed stretch-draw region, completes immersed tube main body and pour；
E, the slip casting of lashing area 17, slip casting is carried out to the layout area of prestress wire 18 and seal closure 3.
Above-mentioned construction procedure is taken, before to carrying out concreting inside steel cap, is pacified anchorage using temporary connection
On steel cap, so as to ensure being relatively fixed for anchorage, pour steel cap inner concrete and be smoothed out, and in concrete setting
Temporary connection is removed before post-stretching, anchorage is disconnected with steel cap, so as to ensure in stretching construction, steel cap will not be by
The influence of stretching force and deform, so as 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 waterstops closely, reaches preferable water-stagnating effect.
Using temporary connection 4 by anchorage installation when on steel cap 5, in order to ensure that slurries seepage does not occur for seal closure 3
The problem of, injecting glue area 8 is set in seal closure 3 and the contact site of steel cap 5, injecting glue sealing, the injecting glue area 8 are carried out in injecting glue area 8
Be the outer wall circumferential direction of seal closure 3 is carried out along the whole circle contact site of steel cap 5, while to the gap between seal closure 3 and anchor plate 2
Slip casting seals.
Aforesaid way is taken, is avoided in steel cap concreting, spillage problem occurs for sealing anchorage, so as to cause coagulation
Soil blocks anchorage, influences prestress wire lashing, ensures that the processes such as follow-up lashing, tensioning are smoothed out.
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 associated with the seal closure 3, and the logical of connection slurry-feeding hole 6 and slurry outlet 7 is offered on the connectedness 20
Hole, the internal cavities of seal closure 3 are made to be communicated with the internal cavities of anchor plate 2.
Slurry outlet 7 penetrates 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 opened on seal closure 3 so that the internal cavities of seal closure 3 and anchor pad
The internal cavities of plate 2 communicate.
The connectedness 20 is channel-section steel, and the notch of the channel-section 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.
Said structure mode is taken, in prestress pipe（Lashing area）During mud jacking, anchorage energy pulp is sealed, slurries is pressed
Full seal closure, the problem of avoiding while open up multiple grout holes, improves operating efficiency, 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 essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of steel cap seals anchorage, it is characterised in that includes the anchor plate and use of the concrete region to be poured in steel cap
In the work anchor slab of connection steel strand wires, the work anchor slab is arranged on described anchor plate one end, is also associated with the anchor plate
For that will work, anchor slab cover merges the seal closure for making it isolate with concrete region to be poured, and the seal closure extends to the tensioning of steel cap
Bore ends, in addition to it is used for the temporary connection for connecting seal closure and steel cap, the temporary connection is pre- after concreting
Removed before stress tension.
2. steel cap according to claim 1 seals anchorage, it is characterised in that the temporary connection is L-shaped steel bar, one
Hold and extend into seal closure, the other end radially extends along tensioning hole, rotation angle position and steel cap and the sealing of the temporary connection
Cover can breakaway-element connection.
3. steel cap according to claim 1 seals anchorage, it is characterised 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 is connected to protect the bellows of steel strand wires.
4. steel cap according to claim 3 seals anchorage, it is characterised 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. the steel cap sealing anchorage according to one of claim 1-4, it is characterised in that the seal closure is arranged on anchor plate
On, sealing copper ring is provided with installation position.
6. the steel cap sealing anchorage according to claim 3 or 4, it is characterised in that anchor plate and the bellows junction
It is enclosed with thermoplastic set.
7. the steel cap sealing anchorage according to one of claim 1-4, it is characterised in that concrete region to be poured is provided with spiral shell
Revolve muscle.
8. a kind of steel cap tensioning construction method, carried out using the steel cap sealing anchorage as described in one of claim 1-6
During tensioning, comprise the following steps：
A, install anchorage, using temporary connection by anchorage installation on steel cap；
B, pour, to carrying out concreting inside steel cap；
C, stretching construction, after concrete strength reaches design requirement, temporary connection is removed, and prestress wire is carried out
Lashing, lashing complete post-stretching to design requirement；
D, tensioning grouting behind shaft or drift lining, slip casting is carried out to prestressed stretch-draw region, completes immersed tube main body and pour；
E, lashing area slip casting, slip casting is carried out to prestress wire layout area and seal closure.
9. steel cap tensioning construction method according to claim 8, it is characterised in that described in the step a
Seal closure sets injecting glue area with the steel cap contact site, and injecting glue sealing is carried out in injecting glue area, and 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, it is characterised in that in seal closure and anchor plate
It is upper to offer slurry-feeding hole and slurry outlet respectively, connectedness is also associated with the seal closure, connection is offered on the connectedness
The through hole of slurry-feeding hole and slurry outlet, seal closure internal cavities are made to be communicated 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)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136892A (en) * | 2021-05-18 | 2021-07-20 | 中国五冶集团有限公司 | Pipe joint splicing device, splicing structure and splicing method of assembly type 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 |
| 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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| CN1598211A (en) * | 2004-08-18 | 2005-03-23 | 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 |
| CN103046546A (en) * | 2012-11-23 | 2013-04-17 | 浙江中桥预应力设备有限公司 | Detachable anchor cable and construction process thereof |
| JP2014227661A (en) * | 2013-05-20 | 2014-12-08 | Ｊｆｅスチール株式会社 | Aseismic reinforcement structure of joint part of submerged tunnel |
| CN106988346A (en) * | 2017-03-24 | 2017-07-28 | 中国交通建设股份有限公司 | Immersed tube tunnel final joint and method for prefabricating, installation method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598211A (en) * | 2004-08-18 | 2005-03-23 | 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 |
| CN103046546A (en) * | 2012-11-23 | 2013-04-17 | 浙江中桥预应力设备有限公司 | Detachable anchor cable and construction process thereof |
| JP2014227661A (en) * | 2013-05-20 | 2014-12-08 | Ｊｆｅスチール株式会社 | Aseismic reinforcement structure of joint part of submerged tunnel |
| CN106988346A (en) * | 2017-03-24 | 2017-07-28 | 中国交通建设股份有限公司 | Immersed tube tunnel final joint and method for prefabricating, installation method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136892A (en) * | 2021-05-18 | 2021-07-20 | 中国五冶集团有限公司 | Pipe joint splicing device, splicing structure and splicing method of assembly type 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 |
| 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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| Publication number | Publication date |
|---|---|
| CN107524163B (en) | 2019-06-28 |
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