CN105088933A - Hollow slab bridge with inclined hinge joint and building method thereof - Google Patents
Hollow slab bridge with inclined hinge joint and building method thereof Download PDFInfo
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- CN105088933A CN105088933A CN201410192350.2A CN201410192350A CN105088933A CN 105088933 A CN105088933 A CN 105088933A CN 201410192350 A CN201410192350 A CN 201410192350A CN 105088933 A CN105088933 A CN 105088933A
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Abstract
In order to avoid the cracking along a hinge joint of a hollow slab bridge, the invention provides a hollow slab bridge with an inclined hinge joint and a building method thereof. The bottom of a hollow slab hinge joint transfers tensile force in the transverse direction of a bridge through anchor connection, and in order to strengthen the capability of transferring the shearing force in the transverse direction of the bridge, a through long screw rod from a bottom plate to a top plate is used to pass through the hinge joint to connect an adjacent hollow slab. The hinge joint of the hollow slab can be a common one arranged in an inclined manner, can be one which is in a stepped shape, and also can be one of which the middle part is a linear joint, and the top plate and the bottom plate are respectively provided with a protruding gear block and an unfilled corner engaged with the gear block. Through a connecting steel plate at the bottom of the hinge joint, the tensile capability of the bottom of the hinge joint is improved, and the shear-bearing capacity of the hinge joint is improved through the connection of the through long screw rod. The hinge joint problem always troubled the hollow slab bridge is solved, the durability of connection is increased and the maintenance cost of the bridge is reduced.
Description
Technical field
The present invention relates to hollow slab bridge and the construction method thereof of the inclination of hinge seam, belong to bridge engineering field.
Background technology
Prefabricated assembled hollow slab bridge, because of its simple structure, stressed clear and definite, easy construction, is one of first-selected bridge type of Short/Medium Span Bridge.At present, this bridge type has become on speedway, arterial highway and has used maximum bridge types, particularly across the most common in the medium and small highway bridge of footpath in below 20m scope, is also the longest bridge type of mileage number.
The construction method of this kind of bridge is by prefabricated hollowcore slab hoisted in position, then the ribbet position concreting between adjacent vacant core, to mat formation bridge floor, by ribbet reinforcing bar and concrete and deck paving, each piece of hollowcore slab is become overall along bridge lateral connection.The hollowcore slab of such bridge is constructed in precast yard, and cross section is generally single hole or diplopore section form, and adopt pre-tensioning system longitudinally to arrange prestressed reinforcement along plate, hollowcore slab side is fold-line-shaped.
Owing to being only connected and power transmission with concrete by ribbet reinforcing bar between adjacent vacant core, plate and plate concatenation ability deficiency, bridge integrity is poor.And ribbet size is general relatively little, difficulty of construction is large, concrete curing inconvenience, Mechanics Performance of Adherence of New can not be guaranteed, and causes ribbet intensity low, fragile, cause ribbet sheared destruction, even form single slab bearing, hollowcore slab amount of deflection increases, and makes bridge floor longitudinally occur crack in ribbet position along bridge, destroy the pave-load layer of bridge floor, cause vehicle pitching, thus affect normal use and the durability of bridge, hide some dangers for the current safety of bridge.Domestic only just had 5 hollow slab bridges to occur collapse accident in 2011.
By studying and thinking deeply, people recognize gradually, and the stressed of hollowcore slab hinge seam mainly comprises shearing and transverse bending moment between plate, and cracking is generally ftracture in advance in hinge seam bottom under the effect of transverse bending moment.People start the reliability ensureing lateral connection from structure gradually, usually through increasing diaphragm and applying the transverse integral that transverse prestress increases bridge in design.
Increase diaphragm and bring inconvenience to construction, apply transverse prestress except increase construction operation amount, also affect sight and the under-clearance of bridge.Bottom narrow and small seam, almost can not provide space for taking other reliable lateral connection.
Summary of the invention
The present invention is the defect overcoming prior art, provides the hinge hollow slab bridge that seam tilts and construction method thereof, improves the shear resistance that cuts with scissors seam between plate and hinge seam bottom anti-direction across bridge is curved to pull open the ability of splitting.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: the assembled hollow slab bridge of hollowcore slab adopting trapezoid cross section, and the hinge seam between hollowcore slab tilts.The middle plate of hollowcore slab be divided into die mould and under hold type, side plate be also divided into die mould and under hold type.
Hinge seam can adopt three kinds of forms, and a kind of to be shape be that conventional large hinge seam is tilting, and hinge can pour into Self-leveling micro aggregate concrete or high-strength mortar in stitching; Another kind cuts with scissors seam middle part to can be linear seam, and respectively there is the tooth block given prominence to and the unfilled corner be engaged mutually on top, base plate place, and the third is hinge seam both sides hollowcore slab web is step-like, is mutually engaged.
There is the junction steel plate across hinge seam bottom hollowcore slab, with bolt anchoring at adjacent hollowcore slab base plate, transmit direction across bridge pulling force; Also can with elongated screw rod from base plate to top board by its anchoring, this measure can make steel plate transmit direction across bridge pulling force, also improves the transmission capacity of shearing between plate simultaneously.
In addition, the junction steel plate across seam also can be installed in hinge seam top, and steel plate anchor bolt or the elongated screw rod from base plate to top board connect.
The hollowcore slab of step-like hinge seam has vertical preformed hole on step, inserts dowel time assembled.On the prefabricated step up of dowel on step, below step has patchhole at correspondence position, first injects anchoring adhesive in assembled hole when.
Penetration concrete or mortar do not connect in hinge seam, when hollowcore slab is assembled, smear chemical glue at its hinge seam position, solidify the adhesion stress of rear enhancing hinge seam two sides.
The invention has the beneficial effects as follows: improve the globality of precast hollow slab bridge along bridge transverse direction, overcome conventional hollow slab bridge easily at hinge seam end cracking, hinge seam inner concrete loosens, comes off, and then the shortcoming that hinge seam shear resistance significantly reduces.By the junction steel plate of hinge seam bottom, improve the resistance to tension of hinge seam bottom, the connection of elongated screw rod, improve hinge seam shear resistance.Deck paving does not need to change.
The present invention is applicable to the various prestressed concrete across footpath or steel reinforced concrete assembling hollow slab bridge.
Solve the hinge seam problem always perplexing hollow slab bridge, add the durability of connection, the maintenance of bridge can be reduced, save social resources.
Accompanying drawing explanation
Fig. 1 cuts with scissors one of hollow slab bridge schematic cross-sectional view of seam inclination;
Fig. 2 cuts with scissors the hollow slab bridge schematic cross-sectional view two that seam tilts;
Fig. 3 cuts with scissors the hollow slab bridge schematic cross-sectional view three that seam tilts;
Die mould side plate schematic cross-sectional view on Fig. 4;
Type side plate schematic cross-sectional view is held under Fig. 5;
Plate schematic cross-sectional view in die mould on Fig. 6;
Plate schematic cross-sectional view in type is held under Fig. 7;
Fig. 8 cuts with scissors seam bottom transverse section partial schematic diagram;
The hinge seam schematic cross-sectional view that the elongated screw rod of Fig. 9 is strengthened;
The step-like oblique hinge seam schematic cross-sectional view of Figure 10;
The step-like oblique hinge seam schematic cross-sectional view that Figure 11 dowel is strengthened;
The step-like oblique hinge seam schematic cross-sectional view that the elongated screw rod of Figure 12 connects;
The step-like oblique hinge seam schematic cross-sectional view that Figure 13 dowel is strengthened and elongated screw rod connects;
The simple type that the elongated screw rod of Figure 14 connects tiltedly cuts with scissors seam schematic cross-sectional view;
The corresponding hollowcore slab schematic cross-sectional view of Figure 15 step-like hinge seam.
Mark in figure: 1. go up die mould side plate, 2. hold plate in type down, 3. go up plate in die mould, 4. hold type side plate down, across hinge seam steel plate 5., 6. hinge seam, 7. bottom anchor bolt, 8. elastomeric pad, 9. bolt sleeve, 10. elongated screw rod connection steel plate, 11. screw rods, 12. nuts, 13. step dowels.
Detailed description of the invention
First embodiment of the present invention is hollow slab bridge as shown in Figure 1.The hollowcore slab type that this bridge adopts comprises holding under shown in the upper die mould side plate (1) shown in Fig. 4, Fig. 5 in the upper die mould shown in type side plate (4), Fig. 6 under shown in plate (3), Fig. 7 holds plate in type (2).First lift down when building-site is assembled and hold type side plate (4), then lifting is separated by one and is held plate in type (2) under plate (3) in die mould, then plate (3) in the upper die mould of lifting.Adopt and use the same method, lifting is to the right separated by one and is held plate in type (2) under plate (3) in die mould, then lifts plate in die mould (3), the upper die mould side plate (1) of finally lifting.With bottom anchor bolt (7), steel plate (5) anchoring is stitched across hinge in bottom.Perfusion Self-leveling micro aggregate concrete in hinge seam.After hinge seam concrete strength reaches 90%, constructing anti-collision guardrail also pours into a mould pave-load layer concrete, after pave-load layer concrete strength reaches 90%, and making asphalt surface course.
Second embodiment of the present invention revises first embodiment, and corresponding hollow slab bridge as shown in Figure 2.First install when it is assembled under side plate is closed in left side and hold plate in type (2), lift down-pressing type side plate (1) again, plate in type (2) is held under next block on lifting right side, plate (3) in the upper die mould between plate in type (2) is held under lifting two pieces, plate in type (2) is held under lifting next block on right side successively, hold plate (3) in the upper die mould between plate in type (2) under lifting two pieces, finally lift the down-pressing type side plate (1) of the rightmost side.
3rd embodiment of the present invention revises first embodiment, and corresponding hollow slab bridge is hollow slab bridge as shown in Figure 3.Sum up the first two example, hold type side plate (4) under left side is first installed when it is assembled and all under hold plate in type (2) and the rightmost side under hold type side plate (4), then lift plate (3) in all upper die moulds.
4th embodiment of the present invention improves first three embodiment, and after all hollowcore slab liftings put in place, each hinge seam connects with three elongated screw rods (11) from base plate to top board as shown in Figure 9, and tightening nuts (12).
5th embodiment of the present invention revises first embodiment, step-like for as shown in figure 11 of hinge seam.Adjacent hollow pallet has vertical dowel between rank.On the prefabricated step up of dowel on step, below step has patchhole at correspondence position, in assembled hole when first in the hole of below step.Hold under lifting is all plate in type (2) and under hold type side plate (4) after, in its vertical hole, inject anchoring adhesive, then plate (3) in the upper die mould side plate (1) of lifting or upper die mould, in its step, be prefabricated with the vertical step dowel (13) stretched out downwards.The bottom anchor bolt (7) of anchoring hinge seam.
6th embodiment of the present invention revises the 5th embodiment, and hinge seam is as shown in figure 13, also in step-like.Hollowcore slab assembled upper after, connect top board and base plate with elongated screw rod (11).
7th embodiment of the present invention adopts a kind of easy hinge seam type of attachment, as shown in figure 14.Cutting with scissors seam middle part is linear seam, and respectively there is the tooth block given prominence to and the unfilled corner be engaged mutually on top, base plate place.Before lifting down-pressing type hollowcore slab, smear modified epoxy glue in the lower side in template.After the hollowcore slab of hinge seam both sides lifts and puts in place, with screw rod (11), adjacent vacant core is tightened together, and guarantee have a screw rod to pass the projection of bottom, thus realize the transmission of bottom pulling force, can strengthen through the screw rod (11) tiltedly cutting with scissors seam the ability that hinge seam transmits direction across bridge shearing.
Claims (10)
1. the hollow slab bridge of hinge seam inclination, is applied to bridge engineering field, it is characterized in that: hollow slab bridge adopts the hollowcore slab of trapezoid cross section assembled, and the hinge seam between hollowcore slab tilts.
2. hinge as claimed in claim 1 stitches the hollow slab bridge of inclination, it is characterized in that: hinge seam shape is that conventional large hinge is stitched tilting.
3. hinge as claimed in claim 1 stitches the hollow slab bridge of inclination, it is characterized in that: cutting with scissors seam middle part is that linear stitches, and respectively there is the tooth block given prominence to and the unfilled corner be engaged mutually on top, base plate place.
4. the hollow slab bridge of hinge seam as claimed in claim 1 inclination, is characterized in that: hinge seam both sides hollowcore slab web is step-like, is mutually engaged.
5., as the hollow slab bridge that claim 2 and claim 3 and hinge seam according to claim 4 tilt, it is characterized in that: bottom hollowcore slab, have the junction steel plate across hinge seam, with bolt anchoring at adjacent hollowcore slab base plate, transmit direction across bridge pulling force.
6. as hollow slab bridge that claim 2 and claim 3 and hinge seam according to claim 4 tilt, it is characterized in that: hinge seam bottom has across seam steel plate, elongated screw rod is by its anchoring from base plate to top board, and this measure can make steel plate transmit direction across bridge pulling force, also improves the transmission of shearing between plate simultaneously.
7. as the hollow slab bridge that claim 2 and claim 3 and hinge seam according to claim 4 tilt, it is characterized in that: the junction steel plate across seam is also installed at hinge seam top, and steel plate anchor bolt or the elongated screw rod from base plate to top board connect.
8. the hollow slab bridge of hinge seam as claimed in claim 4 inclination, it is characterized in that: between the step of adjacent vacant core, have vertical dowel, on the prefabricated step up of dowel on step, below step has patchhole at correspondence position, first injects anchoring adhesive in assembled hole when.
9. as the hollow slab bridge that claim 3 and hinge seam according to claim 4 tilt, it is characterized in that: when hollowcore slab is assembled, smear chemical glue at its hinge seam position, solidify the rear adhesion stress strengthening hinge seam two sides.
10. the hollow slab bridge of hinge seam inclination, is characterized in that: construction method mainly comprises the following steps:
(1) erection method of hollow slab bridge superstructure and the width of each hollowcore slab is selected according to the design parameters such as bridge span, bridge deck width; Be rigidly connected according between hollowcore slab again, hinge seam position complex region is still considered as other vertical webs, according to design parameterss such as the grades of bridge, carry out hollow slab bridge structural analysis, calculate and determine hollowcore slab top, base plate, web thickness uniform section dimensional parameters, plain bars and longitudinal prestressing reinforcing bar;
(2) at precast yard's precast hollow slab, build shape as hollowcore slab determined in Fig. 4 to Fig. 7, hollowcore slab is trapezoidal;
(3) be that trapezoidal hollowcore slab transports to bridge construction place by the prefabricated cross section completed, first lift down time assembled and hold type side plate or middle plate, lifting is held in type before plate, guarantee that lower the lifting in template below it puts in place;
(4) according to the difference of each hinge seam concrete form, select different hinge seam methods of attachment, the situation tilting to routine hinge seam, builds hinge seam concrete; To hinge seam middle part linearly shape or step-like, smearing structure adhesive glue on assembled front contact surface, and the steel plate stitching base plate with bolt connecting hinge, or connect adjacent vacant core with the elongated screw rod from base plate to top board; The hinge of step-like connection is stitched, the method process need mentioned by claim 8;
(5) constructing anti-collision guardrail etc., build bridge deck pavement, surface layer of mating formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410192350.2A CN105088933B (en) | 2014-05-08 | 2014-05-08 | Hollow slab bridge with inclined hinge joint and building method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410192350.2A CN105088933B (en) | 2014-05-08 | 2014-05-08 | Hollow slab bridge with inclined hinge joint and building method thereof |
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| Publication Number | Publication Date |
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| CN105088933A true CN105088933A (en) | 2015-11-25 |
| CN105088933B CN105088933B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410192350.2A Expired - Fee Related CN105088933B (en) | 2014-05-08 | 2014-05-08 | Hollow slab bridge with inclined hinge joint and building method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518599A (en) * | 2018-12-17 | 2019-03-26 | 扬州大学 | A kind of inclined hollow slab bridge of hinge seam |
| CN109610312A (en) * | 2018-12-26 | 2019-04-12 | 北京工业大学 | Prefabrication and assembly construction floorings based on the connection of X-type presstressed reinforcing steel |
Citations (7)
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| CN1067283A (en) * | 1992-06-20 | 1992-12-23 | 武汉城市建设学院 | Method for providing hinges on sway leg steel frame bridge without abutment |
| JPH09235705A (en) * | 1996-03-01 | 1997-09-09 | Oriental Constr Co Ltd | Reinforcing structure of gerber bridge hinge and reinforcing method thereof |
| KR20090105503A (en) * | 2008-04-03 | 2009-10-07 | (주)한국해외기술공사 | Joint box girder bridge use the wire to pull for the vertical and horizontal method besides |
| CN101935977A (en) * | 2010-09-29 | 2011-01-05 | 郑州大学 | Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force |
| CN102561169A (en) * | 2012-03-06 | 2012-07-11 | 郑州大学 | Hollow slab bridge and construction method thereof |
| CN103046478A (en) * | 2013-01-20 | 2013-04-17 | 青岛理工大学 | Strengthening and pulling device of hinge gap of compositional plate girder bridge |
| CN103290778A (en) * | 2013-05-21 | 2013-09-11 | 北京交通大学 | Method of improving bearing capacity of steel box girder joint |
-
2014
- 2014-05-08 CN CN201410192350.2A patent/CN105088933B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067283A (en) * | 1992-06-20 | 1992-12-23 | 武汉城市建设学院 | Method for providing hinges on sway leg steel frame bridge without abutment |
| JPH09235705A (en) * | 1996-03-01 | 1997-09-09 | Oriental Constr Co Ltd | Reinforcing structure of gerber bridge hinge and reinforcing method thereof |
| KR20090105503A (en) * | 2008-04-03 | 2009-10-07 | (주)한국해외기술공사 | Joint box girder bridge use the wire to pull for the vertical and horizontal method besides |
| CN101935977A (en) * | 2010-09-29 | 2011-01-05 | 郑州大学 | Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force |
| CN102561169A (en) * | 2012-03-06 | 2012-07-11 | 郑州大学 | Hollow slab bridge and construction method thereof |
| CN103046478A (en) * | 2013-01-20 | 2013-04-17 | 青岛理工大学 | Strengthening and pulling device of hinge gap of compositional plate girder bridge |
| CN103290778A (en) * | 2013-05-21 | 2013-09-11 | 北京交通大学 | Method of improving bearing capacity of steel box girder joint |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518599A (en) * | 2018-12-17 | 2019-03-26 | 扬州大学 | A kind of inclined hollow slab bridge of hinge seam |
| CN109610312A (en) * | 2018-12-26 | 2019-04-12 | 北京工业大学 | Prefabrication and assembly construction floorings based on the connection of X-type presstressed reinforcing steel |
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| Publication number | Publication date |
|---|---|
| CN105088933B (en) | 2017-04-12 |
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Inventor after: Wei Jiandong Inventor after: Cao Chun Inventor after: Zhang Lijun Inventor after: Wan Chao Inventor after: He Zhibin Inventor after: Wang Ruishan Inventor after: Du Xueqin Inventor after: Zhou Feng Inventor after: Li Peng Inventor after: Xu Shengtang Inventor after: You Peng Inventor after: Men Bo Inventor before: Wei Jiandong Inventor before: Song Fenli Inventor before: Ma Yifan |
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Granted publication date: 20170412 Termination date: 20210508 |