CN109487686A - A kind of unit construction bridge panel transverse joint using UHPC grouting material - Google Patents
A kind of unit construction bridge panel transverse joint using UHPC grouting material Download PDFInfo
- Publication number
- CN109487686A CN109487686A CN201811633048.0A CN201811633048A CN109487686A CN 109487686 A CN109487686 A CN 109487686A CN 201811633048 A CN201811633048 A CN 201811633048A CN 109487686 A CN109487686 A CN 109487686A
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- Prior art keywords
- tongue
- groove
- precast concrete
- grouting material
- uhpc
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000009408 flooring Methods 0.000 claims abstract description 41
- 239000011178 precast concrete Substances 0.000 claims abstract description 41
- 230000002787 reinforcement Effects 0.000 claims abstract description 24
- 210000003205 muscle Anatomy 0.000 claims abstract description 22
- 238000011065 in-situ storage Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 239000004567 concrete Substances 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 4
- 230000007774 longterm Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/262—Concrete reinforced with steel fibres
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides a kind of unit construction bridge panel transverse joint using UHPC grouting material, UHPC grouting material including two pieces of precast concrete floorings with tongue and groove and cast in situs between two pieces of precast concrete floorings, the framework of steel reinforcement being spliced by several transverse steels and longitudinal reinforcement is equipped in precast concrete floorings, longitudinal reinforcement is the U-shaped bar construction of bilayer in the U-shaped structure setting in tongue and groove end, U-shaped steel muscle mutually staggers interspersed setting at tongue and groove position between two pieces of precast concrete floorings, by carrying out the cast in situs of UHPC grouting material at tongue and groove positioned opposite, the two pieces of precast concrete floorings being oppositely arranged connections are integral.Unit construction bridge panel transverse joint proposed by the present invention using UHPC grouting material, enhance the durability and stability of the wet seam of floorings, bed die is not needed when cast in situs UHPC, prefabricated bridge construction is simplified, improves the long-term behaviour of prefabricated bridge system.
Description
Technical field
The invention belongs to bridge structure technical fields, and in particular to a kind of horizontal using the unit construction bridge panel of UHPC grouting material
To seam.
Background technique
Prefabricated bridge has many advantages, such as, economy, can application property and in terms of all there is significant advantage,
Most important one advantage first is that floorings have been completed that the dry of concrete is shunk and temperature change when setting up, will not go out
Existing resulting tensile stress.Prefabricated bridge is and high-quality other than speed of application is fast, and disease in use is few, subtracts
Lacked maintenance costs, increased service life, therefore, prefabricated bridge application range be gradually expanded newly building bridge field it
In.The key technology of prefabricated assembled deck structrue is assembled construction.Assembly construction is the power transmission pivot of prefabricated construction
Weak link in knob and use process gently causes the cracking of component, influences bridge if assembled construction goes wrong
Service performance, it is heavy then influence the power transmission between component, or even total is caused the serious consequences such as to be collapsed.Therefore assembled to construct not
Only it is related to the local pressure of structure, while has an effect on the overall performance of structure, assembly construction is safely and effectively to guarantee structure
The premise of normal work.Wet seam is the key position of prefabricated bridge, and prefabricated bridge had both may be implemented in reasonable wet joint designs
Good power transmission between panel, and can guarantee the overall performance of anti-permeability performance and bridge.
UHPC (ultra-high performance concrete) has the advantages that high-intensitive, high ductility, high-durability and high-environmental.Based on most
Big closely knit topology degree forms closestpacking, fine grained active constituent with optimal proportion between composition material different-grain diameter particle
The defect of material internal is greatly decreased in the addition of silicon ash and low water-cement ratio, to obtain maximum intensity and excellent durability,
The admixture of steel fibre makes material show excellent toughness and ductility simultaneously, and has well between reinforcing bar, precast concrete
Adhesive property.
Traditional prefabricated bridge is laterally assembled to use normal concrete as wet joint grouting material, and cast-in-place wet seam needs
Bed die, reinforcement welding or binding work are complicated in tongue and groove, therefore, it is necessary to design a kind of unit construction bridge using UHPC grouting material
Panel transverse joint passes through the higher compression strength of UHPC, and and reinforcing bar when UHPC is applied to prefabricated bridge transverse joint
Between good adhesive property, reduce the anchorage length of reinforcing bar, and then reduce wet joint gap.
Summary of the invention
In view of the problems of the existing technology, the technical solution that the present invention uses to solve problems of the prior art
It is as follows:
A kind of unit construction bridge panel transverse joint using UHPC grouting material, the precast concrete bridge including two pieces with tongue and groove
The UHPC grouting material of panel and cast in situs between two pieces of precast concrete floorings, it is characterised in that: the concrete
The framework of steel reinforcement being spliced by several transverse steels and longitudinal reinforcement is equipped in native floorings, the longitudinal reinforcement is in tongue and groove
The U-shaped bar construction of bilayer of U-shaped structure setting is held, U-shaped steel muscle phase at tongue and groove position between two pieces of precast concrete floorings
Mutually be staggered interspersed setting, and two blocks of precast concretes floorings tongue and groove end is oppositely arranged, by carrying out UHPC filling at tongue and groove
Slurry cast in situs, the two pieces of precast concrete floorings being oppositely arranged connections are integral.
Two blocks of precast concretes floorings tongue and groove end need to carry out at dabbing before carrying out UHPC and pouring at tongue and groove
Reason.
On the basis of the precast concrete floorings are by the framework of steel reinforcement being spliced in longitudinal reinforcement and transverse steel
Casting concrete is formed.
Pass through several lateral steel in every piece of precast concrete floorings between several longitudinal reinforcement upper and lower levels in front and back
Muscle is attached fixation, the U-shaped interlaced interspersed setting of lengths of rebar at longitudinal reinforcement tongue and groove, the front and back U-shaped arc of U-shaped steel muscle after positioning
It is interior to pass through connection reinforcing bar binding connection.
Anchorage length of the U-shaped steel muscle in prefabricated bridge is not less than 10 times of U-shaped bar diameter, U-shaped steel muscle
The lap of splice be no less than 0.75 times of U-shaped anchorage length of steel bar, the spacing of the adjacent U-shaped steel muscle of interlaced arrangement should not exceed
0.75 times of U-shaped anchorage length of steel bar.
The top surface width of the precast concrete floorings ribbet is 0.15m-0.20m, and the middle part width of tongue and groove is
0.19m-0.24m, bottom width 0.01m-0.015m.
The tongue and groove bottom seam blocks reinforcing bar and binder by tongue and groove and blocks, and when construction does not need the wet seam bottom of tongue and groove
Mould.
The present invention has the advantage that
(1) wet seam switching performance is good: UHPC has good cracking resistance, and has good glue between prefabricated board
Tie performance.In addition, the water-cement ratio of UHPC is very low, can ignore substantially when being nearly free from contraction after use, therefore designing because
Concrete shrinkage and the endurance issues generated；
(2) speed of application is fast: the steel hoop of contiguous prefabricated concrete slab end is staggered in seam crossing, has certain
Overlap length, but do not overlap mutually, reinforcing bar binding or welding can be saved in work progress.Tongue and groove bottom surface is by steel simultaneously
Muscle and adhesion agent for blocking do not need to set up bed die in construction.Compared with other modes, construction is more simple and efficient；
(3) guarantee construction quality: since main component is all the prefabricated completion in precasting yard, the quality meeting of these components
It is higher than cast-in-place, to can also guarantee the quality of construction；
(4) can standardized production: precast concrete floorings can be prefabricated in precasting yard, can be according to drawing pre-
Internal standardization production in field processed.
Detailed description of the invention
Fig. 1 is the schematic view of the front view of precast concrete floorings transverse joint of the present invention；
Fig. 2 is the overlooking structure diagram of precast concrete floorings transverse joint of the present invention；
Fig. 3 is the stereoscopic schematic diagram of precast concrete floorings transverse joint of the present invention；
Wherein: 1- precast concrete floorings, 2-UHPC grouting material, 3-U steel bar, 4- connection reinforcing bar, 5- transverse steel,
6- blocks reinforcing bar, 7- binder.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described, such as Fig. 1-
Shown in 3, a kind of unit construction bridge panel transverse joint using UHPC grouting material, the precast concrete bridge floor including two pieces with tongue and groove
The UHPC grouting material 2 of plate 1 and cast in situs between two pieces of precast concrete floorings is equipped in precast concrete floorings 1
The framework of steel reinforcement being spliced by several transverse steels and longitudinal reinforcement pours mixed on the basis of being cast in framework of steel reinforcement in factory
Solidifying soil obtains precast concrete floorings；
Longitudinal reinforcement is the U-shaped bar construction of bilayer in the U-shaped structure setting in tongue and groove end, two pieces of precast concrete floorings
Between at tongue and groove position U-shaped steel muscle mutually stagger interspersed setting, two blocks of precast concretes floorings tongue and groove end is oppositely arranged,
Two pieces are oppositely arranged prefabricated by the bowl structure heaved in middle part by carrying out the cast in situs of UHPC grouting material at tongue and groove
Concrete slab connection is integral.
Pass through several lateral steel in every piece of precast concrete floorings between several longitudinal reinforcement upper and lower levels in front and back
Muscle 5 is attached fixation, and the U-shaped interlaced interspersed setting of lengths of rebar at longitudinal reinforcement tongue and groove, front and back U-shaped steel muscle is U-shaped after positioning
It is connected in arc by the connection binding of reinforcing bar 4, the equidistant interlaced arrangement of U-shaped steel muscle 3 in ribbet avoids binding, Welder
Make, facilitates construction.
Anchorage length of the U-shaped steel muscle in prefabricated bridge is not less than 10 times of U-shaped bar diameter, and U-shaped steel muscle is taken
Spreading degree is no less than 0.75 times of U-shaped anchorage length of steel bar, and the spacing of the adjacent U-shaped steel muscle of interlaced arrangement should not exceed 0.75
U-shaped anchorage length of steel bar again.
The top surface width of precast concrete floorings ribbet is 0.15m-0.20m, and the middle part width of tongue and groove is 0.19m-
0.24m, bottom width 0.01m-0.015m.
Tongue and groove bottom seam blocks reinforcing bar 6 and binder 7 by tongue and groove and blocks, and when construction does not need the wet seam bed die of tongue and groove.
It only needs to carry out dabbing to the concrete at the tongue and groove of floorings end in precast concrete floorings assembly work progress
Processing.
Precast concrete floorings are integral by UHPC connection cast-in-place in ribbet after splicing at the construction field (site), jointly
Bridge floor load is born, the Specific construction process using the unit construction bridge slab joint of UHPC grouting material is as follows:
(1) it in the prefabricated concrete slab of precasting yard and is conserved, is needed to pay attention to when making prefabricated bridge first
The positioning of U-shaped steel muscle 3 in tongue and groove；
(2) then splice precast concrete floorings at the construction field (site) and be further accurately positioned, pay attention to splicing shape
At ribbet width, and carry out the closure work of T and G joint bottom surface；
(3) position carries out the binding work of connection reinforcing bar 4 in ipsilateral U-shaped steel muscle 3 after determining；
(4) to the maintenance of ribbet cast in situs UHPC and plastic covering film progress concrete, cast-in-place seam is formed.
Protection scope of the present invention is not limited to the above embodiments, it is clear that those skilled in the art can be to this hair
It is bright to carry out various changes and deformation without departing from scope and spirit of the present invention.If these changes and deformation belong to power of the present invention
In the range of benefit requirement and its equivalent technologies, then including the intent of the present invention also includes these changes and deforms.
Claims (7)
1. a kind of unit construction bridge panel transverse joint using UHPC grouting material, the precast concrete bridge floor including two pieces with tongue and groove
The UHPC grouting material of plate and cast in situs between two pieces of precast concrete floorings, it is characterised in that: the precast concrete
The framework of steel reinforcement being spliced by several transverse steels and longitudinal reinforcement is equipped in floorings, the longitudinal reinforcement is at tongue and groove end
The U-shaped bar construction of bilayer of U-shaped structure setting, U-shaped steel muscle is mutual at tongue and groove position between two pieces of precast concrete floorings
Be staggered interspersed setting, and two blocks of precast concretes floorings tongue and groove end is oppositely arranged, by carrying out UHPC grouting at tongue and groove
Expect cast in situs, the two pieces of precast concrete floorings being oppositely arranged connections are integral.
2. a kind of unit construction bridge panel transverse joint using UHPC grouting material as described in claim 1, it is characterised in that: institute
Two pieces of precast concrete floorings tongue and groove ends are stated before carrying out UHPC and pouring, dabbing processing need to be carried out at tongue and groove.
3. a kind of unit construction bridge panel transverse joint using UHPC grouting material as described in claim 1, it is characterised in that: institute
State precast concrete floorings be work by be spliced in longitudinal reinforcement and transverse steel framework of steel reinforcement on the basis of pour
Concrete is built to be formed.
4. a kind of unit construction bridge panel transverse joint using UHPC grouting material as described in claim 1, it is characterised in that: every
It is attached by several transverse steels between several longitudinal reinforcement upper and lower levels in front and back in precast concrete floorings described in block
Fixed, the U-shaped interlaced interspersed setting of lengths of rebar at longitudinal reinforcement tongue and groove passes through connection in the U-shaped arc of U-shaped steel muscle of front and back after positioning
Reinforcing bar binding connection.
5. a kind of unit construction bridge panel transverse joint using UHPC grouting material as described in claim 1, it is characterised in that: institute
10 times that anchorage length of the U-shaped steel muscle in prefabricated bridge is not less than U-shaped bar diameter are stated, the lap of splice of U-shaped steel muscle
No less than 0.75 times of U-shaped anchorage length of steel bar, the spacing of the adjacent U-shaped steel muscle of interlaced arrangement should not exceed 0.75 times of U
Steel bar anchorage length.
6. a kind of unit construction bridge panel transverse joint using UHPC grouting material as described in claim 1, it is characterised in that: institute
The top surface width for stating precast concrete floorings ribbet is 0.15m-0.20m, and the middle part width of tongue and groove is 0.19m-0.24m,
Bottom width is 0.01m-0.015m.
7. a kind of unit construction bridge panel transverse joint using UHPC grouting material as described in claim 1, it is characterised in that: institute
The bottom seam for stating tongue and groove blocks reinforcing bar by tongue and groove and binder blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633048.0A CN109487686A (en) | 2018-12-29 | 2018-12-29 | A kind of unit construction bridge panel transverse joint using UHPC grouting material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811633048.0A CN109487686A (en) | 2018-12-29 | 2018-12-29 | A kind of unit construction bridge panel transverse joint using UHPC grouting material |
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| CN109487686A true CN109487686A (en) | 2019-03-19 |
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| CN201811633048.0A Pending CN109487686A (en) | 2018-12-29 | 2018-12-29 | A kind of unit construction bridge panel transverse joint using UHPC grouting material |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930484A (en) * | 2019-04-24 | 2019-06-25 | 深圳市市政设计研究院有限公司福建分公司 | A kind of very-high performance deck structrue and its construction method |
| CN110241726A (en) * | 2019-07-24 | 2019-09-17 | 中南大学 | A kind of prefabricated reinforced concrete combined bridge deck and wet seam construction |
| CN110374014A (en) * | 2019-08-09 | 2019-10-25 | 黄河勘测规划设计研究院有限公司 | Big span continuous beam UHPC column construction method |
| CN110467391A (en) * | 2019-07-11 | 2019-11-19 | 上海复培新材料科技有限公司 | Bridge connecting sewing concrete special powder, its preparation and construction method |
| CN110670482A (en) * | 2019-10-22 | 2020-01-10 | 张鹏 | Bolt connecting device between prefabricated bridge decks of assembled bridge |
| CN110747735A (en) * | 2019-10-30 | 2020-02-04 | 赵鑫 | Anchoring connection device for precast concrete bridge deck of steel-concrete composite beam |
| CN110983942A (en) * | 2019-12-23 | 2020-04-10 | 同济大学建筑设计研究院(集团)有限公司 | Transverse connecting structure and connecting method for precast beams |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109930484A (en) * | 2019-04-24 | 2019-06-25 | 深圳市市政设计研究院有限公司福建分公司 | A kind of very-high performance deck structrue and its construction method |
| CN110467391A (en) * | 2019-07-11 | 2019-11-19 | 上海复培新材料科技有限公司 | Bridge connecting sewing concrete special powder, its preparation and construction method |
| CN110241726A (en) * | 2019-07-24 | 2019-09-17 | 中南大学 | A kind of prefabricated reinforced concrete combined bridge deck and wet seam construction |
| CN110374014A (en) * | 2019-08-09 | 2019-10-25 | 黄河勘测规划设计研究院有限公司 | Big span continuous beam UHPC column construction method |
| CN110670482A (en) * | 2019-10-22 | 2020-01-10 | 张鹏 | Bolt connecting device between prefabricated bridge decks of assembled bridge |
| CN110670482B (en) * | 2019-10-22 | 2021-11-12 | 江苏月生达机械制造有限公司 | Bolt connecting device between prefabricated bridge decks of assembled bridge |
| CN110747735A (en) * | 2019-10-30 | 2020-02-04 | 赵鑫 | Anchoring connection device for precast concrete bridge deck of steel-concrete composite beam |
| CN110983942A (en) * | 2019-12-23 | 2020-04-10 | 同济大学建筑设计研究院(集团)有限公司 | Transverse connecting structure and connecting method for precast beams |
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| CN111075081B (en) * | 2020-02-21 | 2021-11-12 | 中建八局第一建设有限公司 | Laminated slab and construction method thereof |
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Application publication date: 20190319 |