CN208072163U - A kind of three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure - Google Patents
A kind of three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure Download PDFInfo
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- CN208072163U CN208072163U CN201820435340.0U CN201820435340U CN208072163U CN 208072163 U CN208072163 U CN 208072163U CN 201820435340 U CN201820435340 U CN 201820435340U CN 208072163 U CN208072163 U CN 208072163U
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Abstract
The utility model discloses a kind of three face pressures of cable-stayed bridge concrete box girder to cut bearing-type cable beam anchoring structure, it include the box beam being made of top plate, side web and diaphragm plate, it further include the concrete anchor block for Suo Li to be passed to box beam, concrete anchor block is located at back of the body tower side in box beam chamber, intersection in top plate, side web and diaphragm plate is set, and it pours and is integrated with three, its drag-line sleeve runs through diaphragm plate and top plate, diaphragm plate is thickening plank frame of the middle part with large opening, and side web is the plank frame of 45-60cm thickness.The force-transmission mechanism that the cable beam anchoring structure of the utility model is presented carries for three face pressure scissors, and structure power transmission is clearly reliable；The section transitions and stress for significantly improving girder cross section avoid girder casting of concrete in mass problem；It overcomes the anti-corrosion long-term effect of existing cable beam anchoring structure and overhauls the problem of accessibility difference；Reduce reinforcing bar of the drag-line sleeve across beam body when to block, reduces the positioning difficulty of drag-line sleeve.
Description
Technical field
The utility model is related to bridge structure technical fields, more particularly, to a kind of three face of cable-stayed bridge concrete box girder
Compression shear bearing-type cable beam anchoring structure.
Background technology
The suspension cable of concrete box girder stayed-cable bridge and concrete box girder connection structure, i.e. cable beam anchoring structure, as direct
The structure for bearing and transmitting stay cable force is one of the region that concrete deck cable stayed bridge is the most key and stress is most complicated.
For the cable beam anchoring mode of concrete box girder stayed-cable bridge, conventional way is that suspension cable is anchored in concrete box
The concrete anchor block B of two side bottom large volume entity area A of beam, to bear the stay cable force of simultaneously hundred tons of diffusion number, suspension cable
It is anchored on the anchor plate D of anchor block B after passing through steel bushing C pre-buried in entity area A from bridge floor.
However, the cable beam anchoring structure of existing conventional concrete box girder stayed-cable bridge has the following problems：1, due to that will mix
The both sides of solidifying soil box beam are designed to large volume entity area A, and concrete amount is larger, and concrete vibrating is difficult, the heat of hydration is larger；2,
Between the top plate E of concrete box beam section and two side entity area A there are the mutation of larger rigidity, be also easy to produce larger stress collection
Middle phenomenon and cause concrete crack occur；3, steel bushing C needs to run through entire concrete large volume entity area A, and steel bushing C will
Position can occur with reinforcing bar intensive in entity area A and beam body transversely prestressed bars to conflict；4, suspension cable is mostly that space is linear, phase
The steel bushing C answered is also that three-dimensional space direction arranges that, since steel bushing C is pre-buried longer, it is larger that steel bushing determines C difficulty；5, tiltedly
Inhaul cable anchorage structure is located at beam bottom atmospheric environment, and the accessibility of the position is poor, is not easy to ordinary maintenance maintenance, is unfavorable for oblique pull
The anti-corrosion of rope anchor structure；6, stay cable force is passed to mixed by the single side carrying of concrete anchor block B and beam bottom interface F
Solidifying soil box beam, there are cable beam anchoring block B and beam bottom interface F shear stress, the anchor block anchoring face G and junctions beam bottom H I tensile stresses
And crack is larger or even the problem of transfinite.
In conclusion for concrete box girder stayed-cable bridge, how to design a kind of reasonable stress, power transmission it is reliable, it is easy for construction,
Construction quality is easily controllable, economy, long-acting, the easy to repair maintenance of anti-corrosion cable beam anchoring structure, overcome existing Suo Liang anchors
Concrete construction difficulty, the rigidity that the both sides setting large volume entity zone of fixing structure is come, which are mutated, causes concrete cracking, length to draw
The problems such as noose cylinder conflicts with intensive reinforcing bar, long sleeve positioning is not easy to position, facilitate suspension cable anchor structure maintenance and
Prolong the service life, optimize the force-transmission mechanism of cable beam anchoring structure, is the key technical problem that this field is urgently studied and solved
One of.
Utility model content
It cuts and holds in view of the deficienciess of the prior art, the utility model provides a kind of three face pressure of cable-stayed bridge concrete box girder
Load formula cable beam anchoring structure.
The utility model adopts the following technical solution：
A kind of three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure, including by top plate, side web and cross
The box beam that partition board is constituted, the difference is that, further include the concrete anchor block for stay cable force to be passed to box beam,
The concrete anchor block is located at the back of the body tower side in box beam chamber, and the intersection in top plate, side web and diaphragm plate is arranged, and
It pours and is integrated with top plate, side web and diaphragm plate, the drag-line sleeve of the concrete anchor block runs through diaphragm plate and top plate, institute
It is to thicken diaphragm plate to state diaphragm plate.
Scheme as a further improvement of the above technical scheme, three face pressure of cable-stayed bridge concrete box girder cut bearing-type rope
The side web of beam anchorage structure is plank frame, and the thickness of the side web is 45-60cm.
Scheme as a further improvement of the above technical scheme, three face pressure of cable-stayed bridge concrete box girder cut bearing-type rope
The diaphragm plate of beam anchorage structure is plank frame of the middle part with trepanning, and the thickness of the diaphragm plate is 80-120cm, the cross
The middle part trepanning ratio of partition board is 60-80%.
As the further improvement project of above-mentioned technical proposal, three face pressure of cable-stayed bridge concrete box girder cuts bearing-type
Cable beam anchoring structure further includes the reinforcing block to tower side being arranged in box beam chamber, and the reinforcing block is located at top plate, side abdomen
The intersection of plate and diaphragm plate, and pour and be integrated with top plate, side web and diaphragm plate.
As the further improvement project of above-mentioned technical proposal, three face pressure of cable-stayed bridge concrete box girder cuts bearing-type
Cable beam anchoring structure further includes pouring the drag-line sleeve being embedded in the concrete anchor block, and the drag-line sleeve sequentially passes through
The length of diaphragm plate, reinforcing block and top plate, the drag-line sleeve is 1.5-3.6m.
As the further improvement project of above-mentioned technical proposal, three face pressure of cable-stayed bridge concrete box girder cuts bearing-type
Cable beam anchoring structure further includes anchor plate, and the anchor plate is fixed at the front of concrete anchor block, and with drag-line sleeve
End vertical welding.
As the further improvement project of above-mentioned technical proposal, the side of the reinforcing block is vertical plane, the reinforcement
The plane perpendicular of block is and parallel with the extending direction of drag-line sleeve in side.
As the further improvement project of above-mentioned technical proposal, side and the reinforcing block of the concrete anchor block
Side be located at approximately the same plane.
The utility model has the advantages that：
(1) three face pressure of cable-stayed bridge concrete box girder provided by the utility model cuts bearing-type cable beam anchoring structure with coagulation
Based on the intersection pressure-bearing of native anchor block and diaphragm plate, it is cut to concrete anchor block and the intersection of side web and top plate
Auxiliary, the force-transmission mechanism of presentation carries for three face pressure scissors, and structure power transmission is clearly reliable, effectively overcomes existing conventional Suo Liangmao
Cable beam anchoring block existing for fixing structure joins tensile stress everywhere with beam bottom interface shear stress, anchor block anchoring face and beam bottom and splits
It stitches larger or even the problem of transfinite；
(2) three face pressure of cable-stayed bridge concrete box girder provided by the utility model cuts bearing-type cable beam anchoring structure with suitably
The side web of thickness significantly improves girder cross section instead of existing conventional two side entity area of cable beam anchoring structure girder
Section transitions and stress avoid girder casting of concrete in mass problem, while having saved concrete amount, in addition, this reality
It is needed with the main Path of Force Transfer of the novel pressure-bearing for cooperation cable beam anchoring structure, optimizes the design of diaphragm plate, diaphragm plate is set
It is calculated as the thickening partition board form of large area trepanning；
(3) three face pressure of cable-stayed bridge concrete box girder provided by the utility model cuts bearing-type cable beam anchoring structure by oblique pull
Rope is anchored in the chamber of box beam, is conducive to the anti-corrosion long-term effect at suspension cable beam anchor end, and is maintained conveniently, effective gram
It has taken the anti-corrosion long-term effect of existing conventional cable beam anchoring structure and has overhauled the problem of accessibility difference；
(4) compared with existing conventional cable beam anchoring structure, cable-stayed bridge concrete box girder three provided by the utility model
The pre-buried drag-line length sleeve of drag-line beam-ends that face pressure cuts bearing-type cable beam anchoring structure reduces 50% or more, utmostly reduces
Drag-line sleeve passes through reinforcing bar when beam body to block, and reduces the positioning difficulty of drag-line sleeve.
Description of the drawings
Fig. 1 is the stereogram of the cable beam anchoring structure of existing conventional concrete box girder stayed-cable bridge；
Fig. 2 is the front view of the cable beam anchoring structure of existing conventional concrete box girder stayed-cable bridge；
Fig. 3 is the side view of the cable beam anchoring structure of existing conventional concrete box girder stayed-cable bridge；
Fig. 4 cuts bearing-type rope for a kind of three face pressure of cable-stayed bridge concrete box girder provided according to the utility model embodiment
The front view of beam anchorage structure；
Fig. 5 cuts bearing-type rope for a kind of three face pressure of cable-stayed bridge concrete box girder provided according to the utility model embodiment
The side view of beam anchorage structure；
Fig. 6 cuts bearing-type rope for a kind of three face pressure of cable-stayed bridge concrete box girder provided according to the utility model embodiment
One stereogram of beam anchorage structure；
Fig. 7 cuts bearing-type rope for a kind of three face pressure of cable-stayed bridge concrete box girder provided according to the utility model embodiment
Another stereogram of beam anchorage structure；
In figure：
Entity area A, anchor block B, steel bushing C, anchor plate D, top plate E, interface F, anchor block anchor face G, beam bottom H, hand over
Connect place I, box beam 1, top plate 11, side web 12, diaphragm plate 13, concrete anchor block 2, drag-line sleeve 21, reinforcing block 3, anchor plate
4。
Specific implementation mode
In the following with reference to the drawings and specific embodiments, specific embodiment of the present utility model is described in further detail.
Following embodiment is merely to illustrate the utility model, is not intended to limit the specific protection domain of the utility model.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；In this reality
With in novel description, it should be noted that unless otherwise clearly defined and limited, term " connected ", " connection " should be done extensively
Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected, or be integrally connected；It can be directly connected,
It can be indirectly connected through an intermediary.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
As shown in figs. 4-7, a kind of three face pressure of cable-stayed bridge concrete box girder that the utility model embodiment is provided cuts carrying
Formula cable beam anchoring structure includes the box beam 1 being made of top plate 11, side web 12 and diaphragm plate 13, it further includes for by oblique pull
Cable force passes to the concrete anchor block 2 of box beam 1, is poured in concrete anchor block 2 and is embedded with drag-line sleeve 21.
Specifically, concrete anchor block 2 is set to the back of the body tower side in box beam 1, and in detail, concrete anchor block 2 is located at
The top plate 11 of box beam 1, the intersection of side web 12 and diaphragm plate 13, and with top plate 11, side web 12 and diaphragm plate 13 pour for
One.
In detail, above-mentioned side web (12) is designed as plank frame, instead of doing for traditional large volume entity area (A)
Method, and the thickness of side web (12) is 45cm-60cm.
In detail, above-mentioned diaphragm plate (13) is designed as thickening diaphragm structure, thickness 80-120cm, and makees at middle part
Large opening, according to stress needs, trepanning ratio can reasonably select within the scope of 60-80%.
In detail, the drag-line sleeve (21) of concrete anchor block (2) sequentially passes through diaphragm plate (13) and top plate (11), and
The length of drag-line sleeve (21) reasonably selects within the scope of 1.5-3.6m.
A kind of three face pressure of cable-stayed bridge concrete box girder, which is provided, in one embodiment according to the present utility model cuts bearing-type
Cable beam anchoring structure, it further includes reinforcing block 3, reinforcing block 3 be arranged in box beam 1 to tower side, similar concrete anchor block 2
Structure, reinforcing block 3 is located at the intersection of the top plate 11 of box beam 1, side web 12 and diaphragm plate 13, and with top plate 11, side web
12 and diaphragm plate 13 pour and be integrated, the drag-line sleeve 21 of concrete anchor block 2 sequentially passes through diaphragm plate 13, reinforcing block 3 and top
Plate 11.
Specifically, the side of reinforcing block 3 is vertical plane, and the plane perpendicular of reinforcing block 3 is in side, in addition, reinforcing block 3
Bottom surface is parallel with the extending direction of drag-line sleeve 21.
In above-mentioned three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure, the side of concrete anchor block 2
Face and the side of reinforcing block 3 are located at approximately the same plane.
A kind of three face pressure of cable-stayed bridge concrete box girder, which is provided, in another embodiment according to the present utility model cuts carrying
Formula cable beam anchoring structure is additionally provided with anchor plate 4, the end of anchor plate 4 and drag-line sleeve 21 in the front of concrete anchor block 2
Vertical welding.
In above-mentioned three face pressure of cable-stayed bridge concrete box girder cuts the design of bearing-type cable beam anchoring structure, with concrete anchor block
Based on the intersection pressure-bearing of diaphragm plate, be cut to the intersection of concrete anchor block and side web and top plate it is auxiliary, presentation
Force-transmission mechanism carries for three face pressure scissors, and structure power transmission is clearly reliable, overcomes Suo Liang anchors existing for existing cable beam anchoring structure
Gu block is anchored with beam bottom interface shear stress, anchor block, face joins tensile stress everywhere with beam bottom and crack is larger or even what is transfinited asks
Topic；The section transitions and stress for significantly improving girder cross section avoid girder casting of concrete in mass problem；To tower side
The setting of reinforcing block significantly improves unfavorable stress outside the face for thickening diaphragm plate, by tower side reinforcing block and beam body interface
Power transmission, significantly improve the bearing capacity of total.
Meanwhile suspension cable is anchored in box beam intracavitary, be conducive to the anti-corrosion long-term effect at suspension cable beam anchor end, and repair
Maintenance is convenient, overcomes the anti-corrosion long-term effect of existing cable beam anchoring structure and overhauls the problem of accessibility difference；And utmostly
On reduce drag-line sleeve across beam body when reinforcing bar block, reduce the positioning difficulty of drag-line sleeve；Diaphragm plate is designed as adding
Thick diaphragm structure, in order to meet power transmission needs, middle part make large opening and trepanning ratio can within the scope of 60-80% basis
Actual conditions select, and have saved concrete amount.
The utility model has carried out the local stress analysis based on finite element, compared existing conventional concrete box beam oblique pull
Three face pressures of bridge cable beam anchoring structure and the application cut the distribution of force and bearing capacity of bearing-type cable beam anchoring structure, to prove this
Three face pressures that application proposes cut the stress safety of bearing-type cable beam anchoring structure and prominent bearing capacity.
Three face pressures of the existing conventional cable beam anchoring structure of table 1 and the application cut the stress point of bearing-type cable beam anchoring structure
Cloth and bearing capacity
By upper table 1 results, it can be seen that the bearing capacity that three face pressures of the application cut bearing-type cable beam anchoring structure is
2.45 times of existing conventional concrete box girder stayed-cable bridge cable beam anchoring structure, illustrate the new construction that the utility model is proposed
Stress safety and prominent bearing capacity.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Finally, the preferred embodiment that these are only the utility model is not intended to limit the protection model of the utility model
It encloses.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection domain of utility model.
Claims (8)
1. a kind of three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure, including by top plate (11), side web
(12) and diaphragm plate (13) constitute box beam (1), which is characterized in that further include for stay cable force to be passed to box beam (1)
Concrete anchor block (2), the concrete anchor block (2) is located at the back of the body tower side in box beam (1) chamber, is arranged in top plate
(11), the intersection of side web (12) and diaphragm plate (13), and with top plate (11), side web (12) and diaphragm plate (13) pour for
The drag-line sleeve (21) of one, the concrete anchor block (2) runs through diaphragm plate (13) and top plate (11), the diaphragm plate (13)
To thicken diaphragm plate.
2. three face pressure of cable-stayed bridge concrete box girder according to claim 1 cuts bearing-type cable beam anchoring structure, feature exists
In the side web (12) is plank frame, and the thickness of the side web (12) is 45-60cm.
3. three face pressure of cable-stayed bridge concrete box girder according to claim 1 cuts bearing-type cable beam anchoring structure, feature exists
In the diaphragm plate (13) is plank frame of the middle part with trepanning, and the thickness of the diaphragm plate (13) is 80-120cm, described
The middle part trepanning ratio of diaphragm plate (13) is 60-80%.
4. bearing-type cable beam anchoring structure is cut according to three face pressure of claim 1-3 any one of them cable-stayed bridges concrete box girder,
It is characterized in that, further including the reinforcing block (3) to tower side being arranged in box beam (1) chamber, the reinforcing block (3) is located at top
The intersection of plate (11), side web (12) and diaphragm plate (13), and poured with top plate (11), side web (12) and diaphragm plate (13)
It is integrated.
5. three face pressure of cable-stayed bridge concrete box girder according to claim 4 cuts bearing-type cable beam anchoring structure, feature exists
In further including pouring the drag-line sleeve (21) being embedded in the concrete anchor block (2), the drag-line sleeve (21) is passed through successively
Diaphragm plate (13), reinforcing block (3) and top plate (11) are worn, the length of the drag-line sleeve (21) is 1.5-3.6m.
6. three face pressure of cable-stayed bridge concrete box girder according to claim 5 cuts bearing-type cable beam anchoring structure, feature exists
In, further include anchor plate (4), the anchor plate (4) is fixed at the front of concrete anchor block (2), and with drag-line sleeve
(21) end vertical welding.
7. three face pressure of cable-stayed bridge concrete box girder according to claim 5 or 6 cuts bearing-type cable beam anchoring structure, feature
Be, the side of the reinforcing block (3) is vertical plane, the plane perpendicular of the reinforcing block (3) in side, and with the drag-line set
The extending direction of cylinder (21) is parallel.
8. three face pressure of cable-stayed bridge concrete box girder according to claim 5 or 6 cuts bearing-type cable beam anchoring structure, feature
It is, the side of the concrete anchor block (2) is located at approximately the same plane with the side of the reinforcing block (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820435340.0U CN208072163U (en) | 2018-03-28 | 2018-03-28 | A kind of three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820435340.0U CN208072163U (en) | 2018-03-28 | 2018-03-28 | A kind of three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286220A (en) * | 2018-03-28 | 2018-07-17 | 中铁第四勘察设计院集团有限公司 | A kind of three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure |
| CN110886217A (en) * | 2019-09-06 | 2020-03-17 | 中铁二院工程集团有限责任公司 | Precast prestressed concrete anchor beam structure anchored by stay cable and bridge tower |
-
2018
- 2018-03-28 CN CN201820435340.0U patent/CN208072163U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108286220A (en) * | 2018-03-28 | 2018-07-17 | 中铁第四勘察设计院集团有限公司 | A kind of three face pressure of cable-stayed bridge concrete box girder cuts bearing-type cable beam anchoring structure |
| CN108286220B (en) * | 2018-03-28 | 2023-11-10 | 中铁第四勘察设计院集团有限公司 | Bearing type cable-beam anchoring structure for cable-stayed bridge concrete box Liang Sanmian compression shear |
| CN110886217A (en) * | 2019-09-06 | 2020-03-17 | 中铁二院工程集团有限责任公司 | Precast prestressed concrete anchor beam structure anchored by stay cable and bridge tower |
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