CN109898414A - A kind of pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system - Google Patents
A kind of pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system Download PDFInfo
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- CN109898414A CN109898414A CN201910201699.0A CN201910201699A CN109898414A CN 109898414 A CN109898414 A CN 109898414A CN 201910201699 A CN201910201699 A CN 201910201699A CN 109898414 A CN109898414 A CN 109898414A
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- anchorage
- main push
- towing rope
- prestress
- male cone
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- 239000010959 steel Substances 0.000 claims description 21
- 230000007704 transition Effects 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 7
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- 239000003822 epoxy resin Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor systems, comprising: male cone body, head outside are equipped with main push-towing rope anchorage, and the lateral tail of the male cone body is equipped with whole anchor slab；Several prestress wires are equipped in the male cone body, one end of the prestress wire is anchored on the main push-towing rope anchorage, and the other end of the prestress wire is anchored on the whole anchor slab；Prestress anchorage cable, one end anchor the area Mao Zhi rear portion country rock, and the other end is anchored on the whole anchor slab, and under the action of the prestress anchorage cable, the area Mao Zhi rear portion country rock and male cone body are connected as an entirety and participate in stress jointly, resist the pulling force of external main push-towing rope.The area Mao Zhi country rock and male cone body are connected as an entirety by prestress anchorage cable and prestress wire by the present invention, the two participates in stress jointly, reach in features as poor geologic condition, Surrounding Rock Strength is low, tunnel anchorage safety coefficient is improved under structure cranny development rock mass conditions, reduce the purpose that male cone body excavates size.
Description
Technical field
The present invention relates to a kind of pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor systems, belong to oil-gas pipeline overhead crossing engineering and set
Meter field.
Background technique
It is long oil and gas pipeline across one of common methods of barriers such as river, lake, valley that suspension, which is crossed over, and
Over long distances, the preferred and main pattern that Long span is crossed over.As four big primary structures of suspension crossing, anchorage is anchoring master
Cable transmits huge pulling force to the key member of ground, is broadly divided into self-anchored type and ground anchor type, built oil-gas pipeline suspension bridge
All using ground anchor type anchorage.According to the difference of anchor body and ground connection type, ground anchor type anchorage is divided into gravity type and tunnel again
Formula, gravity anchor pour mass concrete and form anchorage by excavation pit, and main push-towing rope drawing is resisted by self gravity
Power, therefore the scale of construction is big, cost is high, large volume foundation pit disturbs surrounding enviroment larger；Tunnel-type anchorage is then by rock mass weight
Tunnel excavation, casting concrete and country rock cooperatively form male cone body in tunnel, tension of main cable are born whereby, with gravity type
Anchorage is compared, and the scale of construction is only the 20%~25% of gravity anchor, and is influenced on surrounding enviroment smaller.Tunnel anchorage require ROCK MASS JOINT compared with
Less, integrality is good, some geological conditions are poor, Surrounding Rock Strength is lower, in the rock mass of structure cranny development, tunnel conventional at present
Road anchor anchoring main push-towing rope mode is not able to satisfy design requirement then.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of pipeline suspension bridge tunnel-type anchorage main push-towing rope anchoring systems
It is outstanding to realize pipeline by setting prestress anchorage cable, whole anchor slab, prestress wire, positioning anchor slab and main push-towing rope anchorage for system
The anchoring of rope Oil pipeline main push-towing rope improves tunnel-type anchorage safety coefficient and reduces the purpose of the area Mao Zhi ambient enviroment disturbance, is
Under complicated geological and limitation geographic and geomorphic conditions, solves aerial crossing pipeline structure tunnel-type anchorage safety and main push-towing rope anchorage problem provides
A kind of new mode.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system, comprising:
External main push-towing rope, one end are anchored on king-tower, and the other end is anchored on the main push-towing rope anchorage on male cone body head；
Male cone body is located inside the area Mao Zhi country rock, and main push-towing rope anchorage, the anchor are equipped on the outside of the head of the male cone body
The lateral tail of cock body is equipped with whole anchor slab；Several prestress wires are equipped in the male cone body, and described several pre-
Prestress steel strand arranges that one end of the prestress wire is anchored at the main push-towing rope with the axis parallel of the male cone body
On anchorage, the other end of the prestress wire is anchored on the whole anchor slab；
Prestress anchorage cable, one end anchor the area Mao Zhi rear portion country rock, and the other end is anchored on the whole anchor slab, described
Under the action of prestress anchorage cable, the area Mao Zhi country rock and male cone body are connected as an entirety and participate in stress jointly, resist the outside
The pulling force of main push-towing rope.
Further, the tilt angle of the male cone body and horizontal plane is identical as the angle of horizontal plane with external main push-towing rope.
Further, the male cone body is made of straightway and transition, wherein the cross section of the straightway is in strip
Shape, the cross section of the transition are in isosceles trapezoid, and the side short side of the strip is the head of male cone body, the strip
Other side short side connect with the upper bottom of the isosceles trapezoid, the bottom of the isosceles trapezoid is the tail portion of the male cone body；Institute
The section of male cone body is stated in the shape of a hoof.
Further, inside the male cone body, the both ends of the prestress wire be respectively arranged with reinforced mesh into
Row partial pressing.
Further, it is provided with positioning anchor slab below the main push-towing rope anchorage, positions the prestressing force for whole
Steel strand wires guarantee the accuracy of the prestress wire anchorage point.
Further, described after the installation for completing positioning anchor slab, reinforced mesh, prestress wire and whole anchor slab
It is filled inside male cone body using C30 concrete.
Further, through-hole needed for being provided with prestress wire on the whole anchor slab, and on the whole anchor slab
Prestress steel twist line three-way hole and positioning anchor slab on prestress steel twist line three-way hole correspond, pre- answering on the entirety anchor slab
Power steel strand wires through-hole is symmetrical in the two sides of whole anchor slab, and the middle of the entirety anchor slab, which is equipped with, is used for prestressed anchor
The aperture of rope.
Further, when connecting prestress wire and prestress anchorage cable by the whole anchor slab, an examination is set
Rope is tested, is detected after the test cable reaches design 1.5 times of anchor force through anchor force, then carry out the construction of prestress anchorage cable.
Further,
The external main push-towing rope end adjusts anchorage using double-screw type；
Main push-towing rope anchorage includes the vertical plate of level board and 4 parallel arrangements, and the vertical plate is arranged perpendicular to level board,
And the vertical plate and level board are integrally formed, and are respectively provided between the level board and vertical plate and between vertical plate and vertical plate
There is stiffener；Through-hole needed for the two sides of the level board are symmetrically arranged with prestress wire, and it is pre- on the level board
Prestress steel twist line three-way hole on prestress steel strand through-hole and positioning anchor slab corresponds；It is had on 4 vertical plates
For the hole that pin shaft passes through, the screw rod of the external main push-towing rope end is fixed on the main push-towing rope anchorage by pin shaft.
Further, the level board of the positioning anchor slab, whole anchor slab and main push-towing rope anchorage is each perpendicular to the male cone body
Section setting.
The invention has the benefit that
The present invention passes through setting prestress anchorage cable, whole anchor slab, prestress wire, positioning anchor slab and main push-towing rope anchorage,
The anchoring of pipeline suspension crossing structure main push-towing rope is realized, tunnel-type anchorage safety coefficient is improved and reduces the area Mao Zhi ambient enviroment and disturb
Dynamic purpose is to solve the anchoring of aerial crossing pipeline structure tunnel-type anchorage main push-towing rope under complicated geological and limitation geographic and geomorphic conditions and ask
Topic provides a kind of new mode.
Meanwhile when the area Mao Zhi is poor by geological conditions, Surrounding Rock Strength is lower, the rock mass orographic condition of structure cranny development
When limitation, the area male cone Ti Hemaozhi country rock is made to participate in stress jointly, greatlys improve the safety coefficient of tunnel-type anchorage, and effectively
Reduce tunnel excavation size, reduces the disturbance of the area Mao Zhi ambient enviroment.
Detailed description of the invention
Fig. 1 is pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system schematic cross-section of the present invention；
Fig. 2 is pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system overall structure diagram of the present invention；
Fig. 3 is main push-towing rope end construction schematic diagram outside the embodiment of the present invention；
Fig. 4 is main push-towing rope anchorage structural schematic diagram of the present invention；
Fig. 5 is entirety of embodiment of the present invention anchored framework schematic diagram；
Fig. 6 is prestress anchorage cable of embodiment of the present invention structural schematic diagram；
Wherein, 1- twin-screw adjusts anchorage, 2- main push-towing rope anchorage, and 3- positions anchor slab, 4- reinforced mesh, 5- male cone body straight line
Section, 6- prestress wire, 7- pin shaft, 8- male cone body transition, 9- test cable, 10- prestress anchorage cable, 11- entirety anchor slab,
12-C30 concrete, the outside 13- main push-towing rope, 14- king-tower, the area 15- Mao Zhi country rock, 16- twin-screw hot casting anchor anchor cup, 17- zinc-copper close
Gold, 18- sealing material, 19- prestress steel twist line three-way hole, 20- prestress anchorage cable aperture, 21- epoxy spray steel strand single layer is without viscous
Connect muscle, 22- guiding cap, 23- anchor cable bellows, 24- isolating frame, 25- centering rack, 26- anchor cable, 27- Grouting Pipe, 28- pre-buried steel
Pipe, 29- epoxy resin mortar, 30- spiral bar, 31- work clip sheet, 32- work anchor slab, 33- screw rod.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
With reference to Fig. 1~2, a kind of pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system, comprising:
External main push-towing rope 13, one end are anchored on king-tower 14, the screw rod 33 that the other end passes through 13 end of the external main push-towing rope
Insertion main push-towing rope anchorage 2 is anchored on the area Mao Zhi country rock 15.The end that the external main push-towing rope 13 connects main push-towing rope anchorage 2 uses institute
It states external 13 end of main push-towing rope and anchorage is adjusted using double-screw type, as shown in Figure 3.
Male cone body is located inside the area Mao Zhi country rock 15, and main push-towing rope anchorage 2, institute are equipped on the outside of the head of the male cone body
The lateral tail for stating male cone body is equipped with whole anchor slab 11；Several prestress wires 6 are equipped in the male cone body, and if described
Dry root prestress wire 6 arranges that one end of the prestress wire 6 is anchored at the axis parallel of the male cone body
On the main push-towing rope anchorage 2, the other end of the prestress wire 6 is anchored on the whole anchor slab 11.Pass through prestressing force
The connection and power transmission of steel strand wires 6 are realized the connection of main push-towing rope anchorage 2 and entire male cone body, external tension of main cable are transferred to whole
A male cone body.
The male cone body is made of straightway 5 and transition 8, wherein the cross section of the straightway 5 is elongated, it is described
The cross section of transition 8 is in isosceles trapezoid, and the side short side of the strip is the head of male cone body, the strip it is another
Side short side is connect with the upper bottom of the isosceles trapezoid, and the bottom of the isosceles trapezoid is the tail portion of the male cone body.Transition
Design can enhance the withdrawal resistance of male cone body, reinforce male cone effect.
As shown in figure 4, main push-towing rope anchorage 2 include level board and 4 parallel arrangement vertical plates, the vertical plate perpendicular to
Level board arrangement, and the vertical plate and level board are integrally formed, between the level board and vertical plate and vertical plate and vertical
Stiffener is provided between plate；Through-hole needed for being provided with prestress wire 6 on the level board, and on the level board
Prestress steel twist line three-way hole on prestress steel twist line three-way hole and positioning anchor slab 3 corresponds；It is opened respectively on 4 vertical plates
There is the hole passed through for pin shaft, the screw rod 1 of 13 end of the external main push-towing rope is fixed on the main push-towing rope anchorage 2 by pin shaft 7.
Prestress anchorage cable 10, one end anchor the area Mao Zhi rear portion country rock, and the other end is anchored on the whole anchor slab 11,
Under the action of the prestress anchorage cable 10, the area Mao Zhi rear portion country rock and male cone body are connected as an entirety and participate in stress jointly, support
Resist the pulling force of the external main push-towing rope 13.
The tilt angle of entire male cone body and horizontal plane is identical as the angle of horizontal plane with external main push-towing rope 13, is external main push-towing rope
The arctan function of 13 ratios of rise to span.
Preferably, inside the male cone body, the both ends of the prestress wire 6 be respectively arranged with reinforced mesh 4 into
Row partial pressing.
The lower section of the main push-towing rope anchorage 2 is provided with positioning anchor slab 3, positions the prestress wire 6 for whole,
Guarantee the accuracy of 6 anchorage point of prestress wire.
Further, after the installation for completing positioning anchor slab 3, reinforced mesh 4, prestress wire 6 and whole anchor slab 11,
It is filled inside the male cone body using C30 concrete 12.
Further, as shown in figure 5, through-hole needed for being provided with prestress wire 6 on the entirety anchor slab 11, and institute
The prestress steel twist line three-way hole stated on prestress steel twist line three-way hole and the positioning anchor slab 3 on whole anchor slab 11 corresponds.It is described
The aperture for prestressed anchor cable 10 is additionally provided on whole anchor slab 11.
When connecting prestress wire 6 and prestress anchorage cable 10 by the whole anchor slab 11, a test cable is set
9, it is detected after the test cable 9 reaches design 1.5 times of anchor force through anchor force, then carry out the construction of prestress anchorage cable 10.Institute
The specific structure for stating prestress anchorage cable 10 is as shown in Figure 6.
Embodiment
It is 355m that the present invention, which is applied in main span length, and main push-towing rope ratio of rise to span is straight on 1/10 pipeline suspension bridge, to transport one
Diameter Ф 1016mm gas pipeline and a D150mm aqueduct.The pipeline suspension bridge includes 2 groups of main push-towing ropes altogether, and every group of spacing is
3m；Every group of main push-towing rope is made of 2 type twin-screw main push-towing ropes of PES5 × 265, every main push-towing rope spacing 550mm.Conduit bridge east bank main push-towing rope is adopted
Pier is anchored with gravity type, slope surface is steeper at the main push-towing rope anchorage point of west bank, and using tunnel anchorage anchorage style, tunnel anchoring depth is
35m, u-shaped cross-section, tunnel front end section are 7.8 × 6m, and bottom section is 7.8 × 9.1m, section width 7.5m, and arch is straight
Diameter 7.8m, straightway height 6m, transition bottom level 9.1m.Prestressed Rock is set on rear side of tunnel anchorage, 8 beam prestressing force are set
Anchor cable, anchor cable model CPS15-24.
Prestress wire is anchored on the anchor face of male cone body transition by whole anchor slab in tunnel anchorage, and each anchor slab is long
1400mm, wide 2230mm, application example design four pieces of whole anchor slabs altogether, and prestress wire institute is respectively set in whole anchor slab two sides
The through-hole needed is corresponded with positioning anchor slab aperture, and every piece of whole anchor slab installs 2 prestress anchorage cables.On the whole anchor slab of distance
First layer HRB400 φ 16mm reinforced mesh is respectively set in square 100mm, and the whole anchor slab of first layer reinforced mesh distance is 100mm,
Every layer of reinforced mesh spacing 80mm, bar spacing are 100 × 100mm, are equipped with 20 layers of reinforced mesh altogether.
As shown in fig. 6, application example designs 8 prestress anchorage cables altogether, prestress anchorage cable uses the underrelaxation of CPS15-24 type
Epoxy sprays non-bending steel cable, using bellows+epoxide resin protective.Prestress anchorage cable should first be carried out excavating to hole bottom
Test carries out anchor force detection after installing anchor cable experiment rope first, and reaching 1.5 times of predetermined anchor force or more qualifications can apply
Work prestress anchorage cable.
On the contact surface of male cone body straightway front, the twin-screw of external main push-towing rope end adjusts anchorage and is anchored at main push-towing rope anchor
Gu on seat, application example totally four main push-towing ropes, i.e. four main push-towing rope anchorages.The long 2130mm in anchorage bottom of every main push-towing rope, it is wide
1360mm, through-hole needed for prestress wire is respectively set in each anchorage two sides of the bottom, every main push-towing rope are equipped with 16 φ
The prestress wire of 15.2mm × 4.It is followed successively by below main push-towing rope anchorage and positions anchor slab, HRB400 φ 16mm reinforced mesh, first
Layer reinforced mesh Distance positioning anchor slab is 100mm, and every layer of reinforced mesh spacing is 80mm, and bar spacing is 100 × 100mm, altogether
It is equipped with 20 layers of reinforced mesh.After completing positioning anchor slab, reinforced mesh, prestress wire, reinforced mesh and whole anchor slab installation,
Male cone body straightway, transition are tamped using C30 concrete.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system characterized by comprising
External main push-towing rope (13), one end are anchored on king-tower (14), and the other end is anchored at the main push-towing rope anchorage (2) on male cone body head
On；
Male cone body is located at the area Mao Zhi country rock (15) inside, is equipped with main push-towing rope anchorage (2) on the outside of the head of the male cone body, institute
The lateral tail for stating male cone body is equipped with whole anchor slab (11)；Several prestress wires (6), and institute are equipped in the male cone body
It states several prestress wires (6) to arrange with the axis parallel of the male cone body, the one of the prestress wire (6)
End is anchored on the main push-towing rope anchorage (2), and the other end of the prestress wire (6) is anchored at the whole anchor slab (11)
On；
Prestress anchorage cable (10), one end anchor the area Mao Zhi rear portion country rock, and the other end is anchored on the whole anchor slab (11),
Under the action of the prestress anchorage cable (10), the area Mao Zhi country rock and male cone body are connected as an entirety and participate in stress jointly, resist
The pulling force of the external main push-towing rope (13).
2. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 1, which is characterized in that the male cone
The tilt angle of body and horizontal plane is identical as the angle of horizontal plane with external main push-towing rope (13).
3. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 2, which is characterized in that the male cone
Body is made of straightway (5) and transition (8), wherein the cross section of the straightway (5) is elongated, the transition (8)
Cross section be in isosceles trapezoid, the side short side of the strip is the head of male cone body, the other side short side of the strip
It is connect with the upper bottom of the isosceles trapezoid, the bottom of the isosceles trapezoid is the tail portion of the male cone body；The male cone body breaks
Face is in the shape of a hoof.
4. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 1, which is characterized in that in the anchor
Inside cock body, the both ends of the prestress wire (6) are respectively arranged with reinforced mesh (4) and carry out partial pressing.
5. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 2, which is characterized in that in the master
It is provided with positioning anchor slab (3) below cable anchorage (2), positions the prestress wire (6) for whole, guarantees described pre-
The accuracy of prestress steel strand (6) anchorage point.
6. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 1, which is characterized in that complete to determine
After position anchor slab (3), reinforced mesh (4), prestress wire (6) and the installation of whole anchor slab (11), adopted inside the male cone body
It is filled with C30 concrete (12).
7. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 5, which is characterized in that the entirety
Through-hole needed for being provided with prestress wire (6) on anchor slab (11), and the prestress wire on the whole anchor slab (11)
Prestress steel twist line three-way hole on through-hole and positioning anchor slab (3) corresponds, the prestress steel twist on the entirety anchor slab (11)
Line three-way hole is symmetrical in the two sides of whole anchor slab (11), and the middle of the entirety anchor slab (11), which is equipped with, is used for prestressed
The aperture of anchor cable (10).
8. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 1, which is characterized in that passing through
When stating whole anchor slab (11) connection prestress wire (6) and prestress anchorage cable (10), a test cable (9) is set, through anchoring
After the power detection test cable (9) reaches 1.5 times of design anchor force, then carry out the construction of prestress anchorage cable (10).
9. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 5, which is characterized in that
External main push-towing rope (13) end adjusts anchorage (1) using double-screw type；
Main push-towing rope anchorage (2) includes the vertical plate of level board and 4 parallel arrangements, and the vertical plate is arranged perpendicular to level board,
And the vertical plate and level board are integrally formed, and are respectively provided between the level board and vertical plate and between vertical plate and vertical plate
There is stiffener；Through-hole needed for the two sides of the level board are symmetrically arranged with prestress wire (6), and on the level board
Prestress steel twist line three-way hole on prestress steel twist line three-way hole and positioning anchor slab (3) corresponds；On 4 vertical plates respectively
It is provided with the hole passed through for pin shaft (7), the screw rod (33) of described external main push-towing rope (13) end is fixed on the main push-towing rope by pin shaft (7)
On anchorage (2).
10. pipeline suspension bridge tunnel-type anchorage main push-towing rope anchor system according to claim 9, which is characterized in that described fixed
The level board of position anchor slab (3), whole anchor slab (11) and main push-towing rope anchorage (2) is each perpendicular to the section setting of the male cone body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910201699.0A CN109898414B (en) | 2019-03-18 | 2019-03-18 | Suspension cable pipeline bridge tunnel type anchorage main cable anchoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910201699.0A CN109898414B (en) | 2019-03-18 | 2019-03-18 | Suspension cable pipeline bridge tunnel type anchorage main cable anchoring system |
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| CN109898414B CN109898414B (en) | 2024-05-24 |
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| CN209836796U (en) * | 2019-03-18 | 2019-12-24 | 中国石油天然气集团有限公司 | Tunnel type anchorage main cable anchoring system for suspension cable pipeline bridge |
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2019
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|---|---|---|---|---|
| GB8327978D0 (en) * | 1983-10-19 | 1983-11-23 | Manuf Aceros Caucho Sa | Cable anchorage |
| CN102352601A (en) * | 2011-08-15 | 2012-02-15 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel type composite anchorage |
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| CN108867378A (en) * | 2018-09-17 | 2018-11-23 | 四川省铁路产业投资集团有限责任公司 | A kind of Techniques of Tunnel-Type Anchorage for Suspension Bridge and construction method |
| CN209836796U (en) * | 2019-03-18 | 2019-12-24 | 中国石油天然气集团有限公司 | Tunnel type anchorage main cable anchoring system for suspension cable pipeline bridge |
| CN212358029U (en) * | 2020-06-08 | 2021-01-15 | 中铁五局集团机械化工程有限责任公司 | Tunnel type anchorage structure for cable crane |
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