CN105672112B - One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web - Google Patents
One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web Download PDFInfo
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- CN105672112B CN105672112B CN201510967156.1A CN201510967156A CN105672112B CN 105672112 B CN105672112 B CN 105672112B CN 201510967156 A CN201510967156 A CN 201510967156A CN 105672112 B CN105672112 B CN 105672112B
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- box beam
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- stirrup
- web
- type hole
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- Architecture (AREA)
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Abstract
One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web, and the periphery setting for being used in hole is combined the skeleton for being fixed into skirt or strip frame, then the technical solution through formwork pouring molding by several stirrups with pull rod；It overcomes and easily causes stress concentration at box girder bridge web holes, the defect for causing box beam holistic resistant behavior to weaken significantly；It is suitable as the trepanning of various closed box girder webs, is particularly suitable for making the big circle cutting of multilayer traffic concrete box beam bridge web.
Description
Technical field
The present invention relates to one kind reinforcing type hole based on double-layer traffic concrete box beam bridge web.
Background technology
With the development of China's economic, urban land resource growing tension, while the rapid growth of the magnitude of traffic flow cause more
The built Urban Bridge increasingly congestion of number, the world has the Missions that Urban Bridge is faced with sustainable development, although to bridge
The magnitude of traffic flow can be alleviated by widen, but the design and construction that can face to build wide bridge is difficult, takes up a large area and cost
Various problems such as high, therefore pass through condition to improve bridge, the urban bridge design of double-layer traffic or double deck be compared with
Good scheme；The development of double-decker bridge can be divided into two stages, i.e. steel truss double-decker bridge and prestressed concrete box girder double-decker bridge two
A stage；In comparison, the former technology relative maturity, but cost is higher, mainly applies in the long-span bridge across river, cross a river
Beam has achieved good economic benefit in project investment etc.；Latter configuration form has all advantages of box-beam structure,
The city bridge in city, the i.e. 30~60m of small span more nervous for land used, cost is more expensive, structure type is comparatively single
Beam is more practical；But conduct oneself with dignity to meet ventilation, daylighting inside box girder bridge, capable of in case of emergency escaping and mitigating box beam
Needs, have to out some necessary holes at the double-decker bridge web of prestressed concrete box girder, this will make the whole of box beam
Body stress performance weakens significantly, and stress concentration, intensity can be caused the unfavorable factors such as to be substantially reduced in tapping.
Invention content
For the above situation, the purpose of the present invention is to provide one kind to be reinforced based on double-layer traffic concrete box beam bridge web
Type hole, it can meet ventilation, daylighting；It can mitigate dead weight again；Escape route can also be in case of emergency used as；And because of hole
Periphery uses the enhancing structure that stirrup is combined with pull rod, and stress performance is good, and bending resistance, shear resistance are strong, and local bearing capacity is high,
It can effectively avoid the stress concentration of box girder web tapping.
To achieve the goals above, a kind of that type hole, the bone on hole periphery are reinforced based on double-layer traffic concrete box beam bridge web
Frame is fixed into skirt or strip frame by several stirrups through pull rod, then through formwork pouring molding.
In order to realize that structure, effect optimization, further step be：
One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web, and the stirrup layering is laid in radial direction and axis
To.
One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web, and two layers of the stirrup is laid in radial direction and axis
To.
One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web, and three layers of the stirrup is laid in radial direction and axis
To.
One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web, and the pull rod is radial uniformly distributed.
One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web, is used in the skeleton on hole periphery by several stirrups
It is fixed into skirt or strip frame through pull rod, then through formwork pouring molding；Two layers or three layers or three layers or more of stirrup point is laid in
It is radial and axial；The radial uniformly distributed technical solution of pull rod；It overcomes and easily causes stress at box girder bridge web holes
It concentrates, the defect for causing box beam holistic resistant behavior to weaken significantly.
The present invention compared with prior art caused by advantageous effect：
(I) present invention is used in the several stirrups of periphery setting for reinforcing type hole and pull rod is combined into skeleton, then through formwork
The technical solution of pouring molding；The intensity of box girder web tapping is set to significantly increase, shear resistant capacity greatly improves, preferably
It is insufficient to solve existing box girder web tapping shear-carrying capacity, the defect being easily damaged；
(II) present invention is used in the double-deck multiple tracks stirrup of periphery setting for reinforcing type hole and pull rod is combined into skeleton, then passes through
The technical solution of formwork pouring molding；So that the unbending of box girder web tapping is remarkably reinforced, improves bending resistance；
(III) present invention is used in the periphery setting multilayer multiple tracks stirrup for reinforcing type hole and pull rod is combined into skeleton, then passes through
The technical solution of formwork pouring molding；So that the whole anti-twisting property of box girder web tapping is enhanced, effectively prevents tapping torsion
Bad generation；
(IV) present invention is used in the periphery setting multilayer multiple tracks stirrup for reinforcing type hole and pull rod is combined into skeleton, then passes through
The technical solution of formwork pouring molding；It increases tapping ventilation, daylighting, emergency danger-avoiding escaping and mitigates the multinomial work(such as dead weight
Energy；
(V) present invention is used in the periphery setting multilayer multiple tracks stirrup for reinforcing type hole and pull rod is combined into skeleton, then passes through
The technical solution of formwork pouring molding；The stress performance for improving tapping, can effectively avoid tapping because stress concentration and
Lack of support and generate destruction；
(VI) periphery of the invention for being used in reinforcement type hole vertically lays stirrup and is combined into skeleton with pull rod, then through formwork
The technical solution of pouring molding；Shearing resistance and bending resistance square performance of the tapping box beam in curved scissors area are improved, is effectively prevented
Tapping caused by stress concentration and Lack of support because destroy；
(VII) periphery of the invention for being used in reinforcement type hole vertically lays stirrup and is combined into skeleton with pull rod, then through formwork
The technical solution of pouring molding；Shearing resistance and bending resistance square performance of the tapping box beam in curved scissors area are improved, tapping area is made
Oblique principal tensile stress is liquidated and is balanced with the vertical principal stress of stirrup in section, effectively prevent and eliminate the generation of diagonal crack with
Development；
(VIII) present invention be used in reinforce the periphery of type hole vertically and laterally laying multilayer multiple tracks stirrup and pull rod in conjunction with and
At skeleton, then the technical solution through formwork pouring molding；Each layer of multiple tracks stirrup and pull rod can play constraint surrounding well
The effect of concrete makes concrete be in three dimension stress state, thus can improve the compression strength of concrete well；And then it carries
The high stress performance of trepanning surrounding and entire box beam；Ensure that box beam reinforces the security performance of type hole.
The present invention is suitable as the trepanning of various closed box girder webs, is particularly suitable for making multilayer traffic concrete box-beam bridge abdomen
The big circle cutting of plate.
Invention is further described in detail with reference to the accompanying drawings and examples.
Description of the drawings
Fig. 1 is a kind of cross for reinforcing showing web position in type hole based on double-layer traffic concrete box beam bridge web of the present invention
To section front view.
Fig. 2 is a kind of side web holes position perspective view based on double-layer traffic concrete box-beam bridge of the present invention.
Fig. 3 is the reinforcing bar layout stracture figure that median ventral plate of the present invention reinforces type hole.
Fig. 4 is the reinforcing bar layout stracture figure that median ventral plate of the present invention reinforces type hole.
Fig. 5 is the toroidal frame basket structure figure that median ventral plate of the present invention reinforces type hole.
Fig. 6 is the kidney-shaped frame basket structure figure that median ventral plate of the present invention reinforces type hole.
Fig. 7 is the toroidal frame cage hierarchical diagram that median ventral plate of the present invention reinforces type hole.
Fig. 8, which is that the present invention is a kind of, being based on double-layer traffic concrete box-beam bridge skeleton lateral cross section Front view 1.
Fig. 9, which is that the present invention is a kind of, being based on double-layer traffic concrete box-beam bridge skeleton lateral cross section Front view 2.
Specific implementation mode
Shown in attached drawing, work of the invention and principle：One kind is reinforced based on double-layer traffic concrete box beam bridge web
The skeleton (1) in hole, hole periphery is fixed into skirt (4) or strip frame (5) by several stirrups (2) through pull rod (3), then is poured through formwork
Build up type；Two layers or three layers or three layers or more of stirrup (2) point is laid in radial and axial；Pull rod (3) is radial uniformly distributed.
In conjunction with attached drawing, the present invention proposes a kind of for the effective of double-layer traffic concrete box beam bridge web tapping reinforcement
Method is specifically to open to arrange double-deck stirrup ring, each layer arrangement at circular hole in double-layer traffic concrete box beam web
Twice stirrup arranges that some steel bar rods hold stirrup around stirrup, so that the power being subject on stirrup can spread out of.To improve case
The holistic resistant behavior of stress performance and box beam at opening in beam web.
Fig. 1 is the arrangement schematic diagram of the function of double-layer traffic box beam, and top plate and bottom plate can be used as bridge deck, can be open to traffic.
When weather environment is severe, top plate bridge deck can close, and bottom plate bridge deck can still pass through.City can thus be mitigated significantly
The traffic pressure in city improves the utilization rate in soil well.Such as Sai Van Bridge in Macau is exactly to be realized using Huge Box Beam
What bilayer was open to traffic.It opens the bridge in January, 2005 and is open to traffic, operation for many years also demonstrates the reliability and surely of double-layer traffic box beam
It is qualitative.
Fig. 2 is the arrangement of reinforcement of the side web of double-layer traffic concrete box girder, in order to meet ventilation, daylighting, escape, mitigate certainly
Three holes have been opened in the requirement of weight on the side web of box beam, according to 1：1 and 3 expression webs open circular hole in 6 scale model figure
Overall condition, as can be seen from the figure the bore size of experimental model is a diameter of 380mm, so actual Circularhole diameter is
Through reaching more than 2 meters.Figure upper 2 indicates the overall condition of web middle trepanning, is similar to the shape such as a stadium of track and field, and model is high
380mm, the wide 760mm. of middle straight line section are in conclusion actual size has fully met ventilation, daylighting, escape are wanted
It asks, and greatly alleviates the dead weight of structure.But so big hole certainly will will generate stress concentration, tapping
Bearing capacity can also substantially reduce.This is exactly where patent of the present invention will solve the problems, such as.
Fig. 3 is the structure chart that side web opens stirrup ring at circular hole, and Fig. 4 is the structure that side web opens stirrup ring at strip-shaped hole
Figure, (4) expression side web both sides open the stirrup ring figure arranged at circular hole, open and arrange the double-deck stirrup ring at circular hole, each layer of cloth
Set twice.The spacing of two layers of stirrup ring is 50mm, and internal layer stirrup ring diameter is 400mm, and outer layer stirrup ring diameter is 500mm, circle
Ring reinforcing bar uses a diameter of 10 reinforcing bar.Annulus surrounding arranges that some radioactivity steel bar rods hold stirrup ring, makes on stirrup ring
The power being subject to can spread out of.Steel bar rod also uses a diameter of 10 reinforcing bar.In view of the hole opened is bigger, thus arrange double-deck
Stirrup.The amount of reinforcement of stirrup uses the principle of equivalent stringing.That is the dosage of stirrup is equal to web as possible does not have trepanning
Place and tapping arrangement reinforcing bar dosage.A means that pull rod in figure, and the length of steel bar rod is used uniformly 200mm long, one
A stirrup annulus one does not know 8 radioactivity steel bar rods.(5) structure chart of tapping stirrup ring among the web of side, hoop are indicated
The shape of muscle ring is similar to the shape of a stadium of track and field, due to the hole bigger opened among web, so middle hoop ring uses
A diameter of 12 reinforcing bar.The same arrangement length of surrounding is the steel bar rod of 200mm, altogether 12 steel bar rods, using symmetrical cloth
It sets.B indicates the steel bar rod around stirrup ring in figure, is used uniformly the same size.
Fig. 5 indicates the structure chart of middle pectoral plate tapping web, and what our box beam models were opened at middle pectoral plate is all small
Circular hole mainly meets the requirement escaped in emergency, equally can also reach the requirement for mitigating dead weight, and middle pectoral plate is opened altogether
Three small sircle holes, and using the principle being arranged symmetrically, in figure 6,7,8 indicate webs three tappings concrete condition.
The shapes and sizes in the hole that middle pectoral plate is opened are just the same, thus convenient for construction.Using the form for opening circular hole, ratio is not only seemed
It is more beautiful, and tapping stress performance is also preferable with respect to other open-cellular forms.
Fig. 6 is the structure chart of median ventral plate tapping stirrup ring, a diameter of 200mm of inner layer stirrup ring, outer layer stirrup ring
A diameter of 300mm. each layer arrangements twice stirrups.In view of bore size is relatively small, so stirrup ring is using a diameter of
The reinforcing bar of 6mm.Stirrup ring surrounding equally uses radioactivity steel bar rod to hold annulus.The power being subject on stirrup ring is set to spread out of
It goes.C indicates radioactivity steel bar rod in figure.Pull rod uses the reinforcing bar of a diameter of 10mm.The length of steel bar rod is similarly
200mm, the dosage of stirrup equally use the principle of equivalent stringing as possible.It can thus make the reinforcing bar formation one inside box beam whole
The steel skeleton of body not only can greatly improve box beam tapping local pressure performance, and can also improve case well
The holistic resistant behavior of beam.
Fig. 7 is box beam top plate section layout drawing, the wide 3000mm in top plate section, length 6000mm, the 1-1 and 2-2 in figure
Place's cutting is come the sectional view at the web holes for just having obtained Fig. 8 and Fig. 9.Box beam trepanning, which is taken, to be arranged symmetrically, so in 1-1
The obtained sectional view of symmetric position cutting with Fig. 8 be as, so no longer individually listing.
The web plate section structural plan that Fig. 8 obtains for cutting at the sections 1-1 in the figure 7, will become apparent from centre from Fig. 8
One has been opened four holes, and size of the hole of Bian Shangkai obviously than the intermediate hole opened is big.The stirrup ring of intermediate arrangement is using straight
Diameter is the reinforcing bar of 6mm.In view of the hole opened on side is relatively large, so stirrup ring uses the reinforcing bar of a diameter of 10mm on side.
A reinforced steel bar ring is formd on the section of entire Fig. 8 in this way.So the stress performance of whole cross section is also good.It will not
It is destroyed first because of tapping stress concentration and stress performance weakness.
Fig. 9 is the web plate section structural plan that the cutting of the sections 2-2 is come in the figure 7, and the difference of Fig. 9 and Fig. 8 exist
It is not circular hole in the hole opened on the sides Fig. 9, and is analogous to the ring-type of stadium of track and field.Refer to the right figure in Fig. 3.In view of what is opened on side
Pore size is larger, thus stirrup ring uses the reinforcing bar of a diameter of 12mm.Intermediate small stirrup ring equally uses the steel of a diameter of 6mm
Muscle.Tapping in figure is all the double-deck stirrup ring of arrangement, and the spacing of each two layers of stirrup ring of layer arrangement twice is 50mm. and figure
As 8, whole cross section forms a reinforced steel bar ring, ensure that the stress performance of whole cross section.
Claims (1)
1. one kind reinforcing type hole based on double-layer traffic concrete box beam bridge web, it is characterised in that it is several that it is included in web laying
Through-hole, bore periphery be arranged skeleton, the skeleton by be layered be laid in radial and axial stirrup with it is radial uniformly distributed
Pull rod is configured to toroidal frame cage or kidney-shaped frame cage, through formwork pouring molding；Two layers, three layers or three layers or more of the stirrup point is laid
In radial and axial.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799330 | 2014-12-21 | ||
| CN2014107993301 | 2014-12-21 |
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| Publication Number | Publication Date |
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| CN105672112A CN105672112A (en) | 2016-06-15 |
| CN105672112B true CN105672112B (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510967156.1A Active CN105672112B (en) | 2014-12-21 | 2015-12-21 | One kind reinforcing type hole based on double-layer traffic concrete box beam bridge web |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100319B (en) * | 2017-05-31 | 2023-03-17 | 南宁学院 | Combined beam |
| CN108265616A (en) * | 2018-03-26 | 2018-07-10 | 上海市城市建设设计研究总院（集团）有限公司 | Piping lane builds structure jointly with overhead |
| CN110792026A (en) * | 2019-10-08 | 2020-02-14 | 上海市政工程设计研究总院（集团）有限公司 | Side belly trompil structure of continuous truss bridge |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831865A (en) * | 2009-03-10 | 2010-09-15 | 马兴华 | Beam spanning multilayer deck |
| CN103132649A (en) * | 2013-03-13 | 2013-06-05 | 广西大学 | Steel box girder matched with cellular steel web plate |
| JP2013117136A (en) * | 2011-12-05 | 2013-06-13 | Chugoku Electric Power Co Inc:The | Steel material and steel structure |
| CN103590535A (en) * | 2013-11-14 | 2014-02-19 | 苏州工业园区设计研究院股份有限公司 | Opening structure of reinforced concrete beam |
| CN203559332U (en) * | 2013-07-23 | 2014-04-23 | 广西壮族自治区交通规划勘察设计研究院 | Curved steel beam for reinforcing slight bending slab of rigid-framed arch bridge |
| CN203977888U (en) * | 2014-07-24 | 2014-12-03 | 中国建筑西南设计研究院有限公司 | Prefabricated orifice plate reinforcement node structure |
-
2015
- 2015-12-21 CN CN201510967156.1A patent/CN105672112B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831865A (en) * | 2009-03-10 | 2010-09-15 | 马兴华 | Beam spanning multilayer deck |
| JP2013117136A (en) * | 2011-12-05 | 2013-06-13 | Chugoku Electric Power Co Inc:The | Steel material and steel structure |
| CN103132649A (en) * | 2013-03-13 | 2013-06-05 | 广西大学 | Steel box girder matched with cellular steel web plate |
| CN203559332U (en) * | 2013-07-23 | 2014-04-23 | 广西壮族自治区交通规划勘察设计研究院 | Curved steel beam for reinforcing slight bending slab of rigid-framed arch bridge |
| CN103590535A (en) * | 2013-11-14 | 2014-02-19 | 苏州工业园区设计研究院股份有限公司 | Opening structure of reinforced concrete beam |
| CN203977888U (en) * | 2014-07-24 | 2014-12-03 | 中国建筑西南设计研究院有限公司 | Prefabricated orifice plate reinforcement node structure |
Non-Patent Citations (1)
| Title |
|---|
| "开孔梁的优化配筋方式研究";王海霞等;《南通工学院学报（自然科学版）》;20040630(第2期);第28-30页和第34页 * |
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