CN207092137U - A kind of prestressed pipe merism - Google Patents
A kind of prestressed pipe merism Download PDFInfo
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- CN207092137U CN207092137U CN201721100857.6U CN201721100857U CN207092137U CN 207092137 U CN207092137 U CN 207092137U CN 201721100857 U CN201721100857 U CN 201721100857U CN 207092137 U CN207092137 U CN 207092137U
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- tube coupling
- merism
- prestressing tendon
- prestressed pipe
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Abstract
The utility model discloses a kind of prestressed pipe merism, including multiple sections being sequentially connected, shear structure and water-stopping system are equipped between each section, in tube coupling interior edge, it is circumferentially with a plurality of prestressing tendon, and every prestressing tendon is longitudinally through along tube coupling and is being divided into multistage close to section joint.The utility model is by setting multiple sections being sequentially connected, shear structure and water-stopping system are set between each section, it can make that shearing force can be born between each section and there is watertightness, by setting a plurality of prestressing tendon in tube coupling, so that multiple section series connection are spliced into an entirety, prestressing tendon is being divided into multistage close to section joint simultaneously, tube coupling is set to have on the premise of integral rigidity is not lost preferably flexible, effectively improve stress and the deformation of each section, make that there is suitable pressure between each section, so that tube coupling has the deformability for preferably adapting to seabed bedding.
Description
Technical field
Immersed tube tunnel technical field is the utility model is related to, more particularly to a kind of prestressed pipe merism.
Background technology
With being continuously increased for Tunnel Engineering over strait, immersed tunnelling method is built seabed tunnel and more and more applied.Immersed tube
Tunnel is usually that several prefabrication standard cube transportations are live to sea, and tube coupling is carried out into docking sinking in seabed and existed
In the foundation trench dredged.At present, the immersed tube tunnel being completed both at home and abroad is broadly divided into sectional type flexibility tube coupling with tube coupling structure
With two kinds of Integral rigid tube coupling.
Flexible tube coupling joins end to end to connect successively and formed by multiple sections, section joint by the tenon male structure of matching and
Connected across buried water stop in seam；Structure is mainly presented flexible characteristic when running into external load, pipe joint section joint occur to open and
Rotate, discharge tube coupling moment of flexure by deforming, structure longitudinal stress is smaller, and longitudinal reinforcement is less, but is anti-between pipe joint section
Cut and the weak link of waterproof, the sealing between pipe joint section has risk, for big load or soft base immersed tube tunnel, has larger
Risk it is bigger.
Rigid tube coupling is formed by connecting by overall tube coupling or multiple pipe joint sections that join end to end by bonded prestress, tube coupling
External load is resisted with integral rigidity, tube coupling longitudinal stress is larger, need to set substantial amounts of reinforcing bar or prestressing force to improve it and carry energy
Power；Meanwhile rigid tube coupling can not implement structural internal force reassignment by tube coupling plastic deformation, discontinuity equalization in structure, stress
Cracking and leak risk be present in the long-term high stress of large area, also can not self-adaptive sea bottom complex sedimentation environment.
Utility model content
The purpose of this utility model is：For in immersed tube tunnel work progress, existing rigid tube coupling can not pass through tube coupling
Structural internal force reassignment is implemented in plastic deformation, can not self-adaptive sea bottom complex sedimentation environment the problem of, there is provided it is a kind of in advance
Solenoid merism, the immersed tube tube coupling have certain flexibility on the premise of integral rigidity is not lost, effectively improve each tube coupling section
The stress of section, enable the sedimentation environment of tube coupling self-adaptive sea bottom complex.
In order to realize above-mentioned purpose of utility model, the utility model provides following technical scheme：
A kind of prestressed pipe merism, including multiple sections being sequentially connected, shear structure is equipped between each section
And water-stopping system, in tube coupling interior edge, it is circumferentially with a plurality of prestressing tendon, every prestressing tendon it is longitudinally through along tube coupling and by
Nearly section joint is divided into multistage.
The present invention sets shear structure and water-stopping system by setting multiple sections being sequentially connected between each section,
It can make that shearing force can be born between each section and there is watertightness, by setting a plurality of prestressing tendon in tube coupling so that
Multiple section series connection are spliced into an entirety, while prestressing tendon is being carried out into segmentation cut-out close to each section joint, i.e.,
Every prestressing tendon is partitioned into multistage, so that allow certain open to deform between each section of tube coupling, make tube coupling not
There is preferably flexibility on the premise of losing integral rigidity, effectively improve stress and the deformation of each section, make to have between each section
There is suitable pressure, so that tube coupling has the deformability for preferably adapting to seabed bedding.
As preferred scheme of the present utility model, the water-stopping system is buried in including between adjacent segment joint
Waterstop and OMEGA waterstops, both of which is along a tube coupling circumferentially whole circle.Stopped by buried in being set within one week in section joint
Water band and OMEGA waterstops, it can prevent the seawater outside tube coupling from entering tube coupling inner chamber by section gap at joint.
As preferred scheme of the present utility model, the shear structure includes being embedded in respectively in adjacent segment concrete
Inner sleeve and outer sleeve, the outer sleeve are set in inner sleeve front portion.It is mutual by being set respectively in two section concrete
The inner sleeve and outer sleeve of cooperation, and by the mutual squeezing action between inner sleeve and outer sleeve contact surface come bear section it
Between shearing force, the shear resistance of section joint can be effectively improved, to prevent pipe joint section radial misalignments, carried so as to overall
The stable connection degree of high each pipe joint section, make spliced tube coupling overall more reliable and more stable.
As preferred scheme of the present utility model, buffer layer is provided between inner sleeve and the outer sleeve contact surface, can be with
Certain cushioning effect is played when being rocked between section, while inner sleeve and outer sleeve can be avoided because directly connecing for a long time
Touch and cause contact stress tired.
As preferred scheme of the present utility model, the buffer layer is the rubber between inner sleeve and outer sleeve contact surface
Rubber cushion.
As preferred scheme of the present utility model, more root bead nails are equipped with the outer wall of the inner sleeve and outer sleeve, can
Pulling capacity between enhancing and concrete.
Compared with prior art, the beneficial effects of the utility model：
1st, the present invention sets shear structure and sealing system by setting multiple sections being sequentially connected between each section
System, it can make that shearing force can be born between each section and there is watertightness, by setting a plurality of prestressing tendon in tube coupling, make
Obtain multiple sections series connection and be spliced into an entirety, while prestressing tendon is being subjected to segmentation cut-out close to each section joint,
Will every prestressing tendon be partitioned into multistage, so that allow between each section of tube coupling it is certain open deformation, tube coupling is existed
Not losing on the premise of integral rigidity has preferably flexible, effectively improves stress and the deformation of each section, makes between each section
With suitable pressure, so that tube coupling has the deformability for preferably adapting to seabed bedding；
2nd, by setting the inner sleeve and outer sleeve of mutual cooperation respectively in two section concrete, and by inner sleeve
Mutual squeezing action between outer sleeve contact surface bears the shearing force between section, can effectively improve section joint
Shear resistance, to prevent pipe joint section radial misalignments, so as to which entirety improves the stable connection degree of each pipe joint section, after making splicing
Tube coupling it is overall more reliable and more stable.
Brief description of the drawings：
Fig. 1 is the prestressed pipe merism schematic diagram in the utility model.
Fig. 2 is the prestressed pipe merism section joint end view in the utility model.
Fig. 3 is the A-A sectional views in Fig. 2.
Fig. 4 is partial schematic diagram at the B in Fig. 2.
Fig. 5 is partial schematic diagram at the C in Fig. 2.
Marked in figure：1- first pours end, 2- mating ends, 3- shear structures, 31- inner sleeves, 32- outer sleeves, 33- weldering nails, 34-
Rubber blanket, buried water stop in 4-, 5-OMEGA waterstops, 6- prestressing tendons, 61- cutting-sleeves, chain saw stops when 62- is cut off
Position, 63- off-positions, 7- joint fire-resistant parts.
Embodiment
The utility model is described in further detail with reference to test example and embodiment.But should not be by this
The scope for being interpreted as the above-mentioned theme of the utility model is only limitted to following embodiment, all to be realized based on the utility model content
Technology belongs to the scope of the utility model.
Embodiment
The present embodiment provides a kind of prestressed pipe merism；
As Figure 1-Figure 5, the prestressed pipe merism in the present embodiment includes multiple sections being sequentially connected, Mei Gejie
Shear structure 3 and water-stopping system are equipped between section, it is circumferentially with a plurality of prestressing tendon 6, every prestressing force in tube coupling interior edge
Beam 6 is longitudinally through along tube coupling and is being divided into multistage close to section joint, and whole tube coupling is provided with multiple off-positions 63.
In the present embodiment, the water-stopping system includes the middle buried water stop 4 and OMEGA being located between adjacent segment joint
Waterstop 5, both of which is along a tube coupling circumferentially whole circle.Pass through buried water stop and OMEGA in being set within one week in section joint
Waterstop, it can prevent the seawater outside tube coupling from entering tube coupling inner chamber by section gap at joint.In addition, on the outside of OMEGA waterstops
It is additionally provided with the joint fire-resistant parts 7 for protecting waterstop.
In the present embodiment, the shear structure 3 includes being embedded in the inner sleeve first poured in end 1 and the concrete of mating end 2 respectively
Cylinder 31 and outer sleeve 32, it is anterior that the outer sleeve 32 is set in inner sleeve 31.By being set respectively in two section concrete
The inner sleeve and outer sleeve of mutual cooperation, and bear to save by the mutual squeezing action between inner sleeve and outer sleeve contact surface
Shearing force between section, the shear resistance of section joint can be effectively improved, to prevent pipe joint section radial misalignments, so as to whole
Body improves the stable connection degree of each pipe joint section, makes spliced tube coupling overall more reliable and more stable.
In the present embodiment, buffer layer is provided between inner sleeve 31 and outer sleeve 32 contact surface, can be between section
Certain cushioning effect is played when rocking, at the same inner sleeve and outer sleeve can be avoided because of direct long term contact and caused by connect
Stress fatigue is touched, the buffer layer in the present embodiment is the rubber blanket 34 between inner sleeve and outer sleeve contact surface.In addition,
In the present embodiment, more root bead nails 33 are equipped with the outer wall of the inner sleeve and outer sleeve, can be strengthened between concrete
Pulling capacity.
Specifically, the prestressed pipe merism in the present embodiment can be manufactured using following technique：
A, banding steel cage and casting concrete；
B, tensioning construction is carried out to tube coupling, multiple section series connection is spliced into an entirety；
C, after tube coupling is installed in place under water, segmentation cutting is carried out to tube coupling prestressing tendon.
In the step a, steel reinforcement cage colligation and concreting are carried out successively by section, specific operation process is, in steel
On muscle cage colligation production line, pushing tow to mid-board area is needed to carry out secondary tie up after the completion of the section steel reinforcement cage colligation of base section one
Prick, while base section carries out the bottom plate colligation of next section steel reinforcement cage, it is necessary to which to be pushed into top plate area complete after the completion of mid-board colligation
Concrete pouring construction, the follow-up each section steel in colligation area are carried out into final section steel reinforcement cage colligation operation and pushing tow to pouring area
Muscle cage continuous-flow type follows up.In addition, in each section when first place matches, it is necessary to be buried in section joint arrangement shear structure 3 with
, it is necessary to explanation, OMEGA waterstops are by bolt and pressing plate after the completion of pouring for formula waterstop 4 and OMEGA waterstops 5
On two section inwalls.The joint fire-resistant parts 7 that are used on the outside of OMEGA waterstops protecting waterstop simultaneously and
What tube coupling was installed after the completion of pouring.
In the step a, also cutting-sleeve need to be buried in the prestressing tendon off-position close to section joint before pouring
61, the cutting-sleeve is PE plastic sleeves, the U-shaped tubulose of its shape, a diameter of 5-7cm, and prestressing tendon cutting-sleeve planted agent is pre-
Traction steel wire is stayed, temporary plugging measure should be used in sleeve oral area, prevent from blocking during concreting, by pouring in concrete
Pre-buried cutting-sleeve before building, it is convenient that cut-out construction subsequently is carried out to prestressing tendon.
In the step b, a plurality of prestress pipe is buried in concreting, it is necessary in tube coupling, treats that concrete is hard
Prestressing tendon is correspondingly penetrated after change in each pipeline, and tensioning is carried out to each prestressing tendon according to certain tension sequence, simultaneously
The prestressed anchor of anchoring prestress beam is provided at tube coupling both ends, prestressed anchor described in the present embodiment is in this area
Excessive narration is no longer carried out herein for the conventional means of anchoring prestress beam, therefore for its specific structure.
In the step c, segmentation cutting is carried out to prestressing tendon by cutting-sleeve using chain saw, the saw chain portion on chain saw
Dividing can be entered in cutting-sleeve 61 by steel wire traction, and then carry out rupturing operation to prestressing tendon, be cut off in prestressing tendon
When chain saw about rest at position 62.Using chain saw cutting prestressing tendon, can stop cutting after chain saw cutting prestressing tendon,
It should be noted that when prestressing tendon is cut off and OMEGA waterstops protected, on the premise of meeting to cut off prestressing tendon, should try one's best reduction
The cutting quantity of concrete, grouting filling is carried out to cut-out hole using micro-expansion cement mortar after prestressing tendon cut-out.
The present embodiment sets shear structure and sealing system by setting multiple sections being sequentially connected between each section
System, it can make that shearing force can be born between each section and there is watertightness, by setting a plurality of prestressing tendon in tube coupling, make
Obtain multiple sections series connection and be spliced into an entirety, while prestressing tendon is being divided into multistage, each section close to section joint
Between allow it is certain open deformation, tube coupling is had on the premise of integral rigidity is not lost preferably flexible, effectively improve each
The stress of section and deformation, make that there is suitable pressure between each section, so that tube coupling, which has, preferably adapts to seabed bedding
Deformability.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the principle of utility model etc., it should be included in protection of the present utility model
Within the scope of.
Claims (6)
1. a kind of prestressed pipe merism, it is characterised in that including multiple sections being sequentially connected, be equipped between each section
Shear structure (3) and water-stopping system, in tube coupling interior edge, it is circumferentially with a plurality of prestressing tendon (6), every prestressing tendon (6) edge pipe
Save longitudinally through and be divided into multistage close to section joint.
2. prestressed pipe merism according to claim 1, it is characterised in that the water-stopping system includes being located at adjacent segments
Middle buried water stop (4) and OMEGA waterstops (5) between section joint, both of which is along a tube coupling circumferentially whole circle.
3. prestressed pipe merism according to claim 2, it is characterised in that the shear structure (3) includes burying respectively
Inner sleeve (31) and outer sleeve (32) in adjacent segment concrete, before the outer sleeve (32) is set in inner sleeve (31)
Portion.
4. prestressed pipe merism according to claim 3, it is characterised in that the inner sleeve (31) and outer sleeve (32)
Buffer layer is provided between contact surface.
5. prestressed pipe merism according to claim 4, it is characterised in that the buffer layer is located at inner sleeve (31)
Rubber blanket (34) between outer sleeve (32) contact surface.
6. the prestressed pipe merism according to one of claim 3-5, it is characterised in that the inner sleeve (31) and overcoat
More root bead nails (33) are equipped with the outer wall of cylinder (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721100857.6U CN207092137U (en) | 2017-08-30 | 2017-08-30 | A kind of prestressed pipe merism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721100857.6U CN207092137U (en) | 2017-08-30 | 2017-08-30 | A kind of prestressed pipe merism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207092137U true CN207092137U (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721100857.6U Active CN207092137U (en) | 2017-08-30 | 2017-08-30 | A kind of prestressed pipe merism |
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| CN (1) | CN207092137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447784A (en) * | 2017-08-30 | 2017-12-08 | 中交公路规划设计院有限公司 | A kind of prestressed pipe merism and its construction method |
-
2017
- 2017-08-30 CN CN201721100857.6U patent/CN207092137U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447784A (en) * | 2017-08-30 | 2017-12-08 | 中交公路规划设计院有限公司 | A kind of prestressed pipe merism and its construction method |
| EP3450632A1 (en) * | 2017-08-30 | 2019-03-06 | CCCC Highway Consultants Co., Ltd | Prestressed tube section structure and construction method thereof |
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