CN106012806B - Cored slab hinge seam Shear connection construction and construction technology - Google Patents
Cored slab hinge seam Shear connection construction and construction technology Download PDFInfo
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- CN106012806B CN106012806B CN201610437324.0A CN201610437324A CN106012806B CN 106012806 B CN106012806 B CN 106012806B CN 201610437324 A CN201610437324 A CN 201610437324A CN 106012806 B CN106012806 B CN 106012806B
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- cored slab
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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
- E01D19/00—Structural or constructional details of bridges
Abstract
The invention discloses a kind of cored slabs to cut with scissors seam Shear connection construction and construction technology, the cored slab hinge seam Shear connection construction includes the cored slab that same plane longitudinally mutually splices, hinge seam is formed between the cored slab, it is perfused with concrete in the hinge seam, it is united layer above the cored slab, it is formed by concreting, hinged seam shear connector is also set up in the hinge seam, the hinge seam shear connector includes the steel panel that opposition is arranged on hinge seam both sides cored slab side wall, shearing peg and PBL shear connectors are connected in the steel panel, the shearing peg is located at steel panel and cored slab connecting side, the PBL shear connectors are located at hinge seam side, the corresponding PBL shear connectors in hinge seam both sides are by running through bar connecting, to realize the mutual splicing of cored slab.The shear connector of composition rigid flexible system is used in combination in shearing peg and PBL shear connectors, can give full play to respective strong point, and anti-fatigue performance is good under the working condition for bearing dynamic load, improves the durability and performance of hinge seam connection between Method Pre-stress Concrete Hollow Slab.
Description
Technical field
The present invention relates to Bridge Design and technical field of construction, in particular to a kind of cored slab cut with scissors seam Shear connection construction and
Construction technology.
Technical background
Due to assembled steel reinforced concrete or prefabricated concrete hollow slab have structural behaviour it is good, from heavy and light, standardization
Production, transport installation and the various features such as easy for construction and be widely adopted and China's Mid and minor spans beam bridge superstructure is normal
One of supporting member.After prefabricated reinforced concrete or prefabricated concrete hollow slab are set up onto bridge pier, cast in situs
Hinge between each precast hollow slab plate stitches concrete to form the superstructure of bridge.Under Vehicle Load, Method Pre-stress Concrete Hollow Slab
Between hinge seam concrete be in cut and by curved effect stress, but based on the effect of being cut.Hinge seam is between Method Pre-stress Concrete Hollow Slab
The significant points of Hollow Slab Beam Bridge superstructure, it connects each precast hollow slab to form whole superstructure and carry transmission
The key effect of mobile load internal force between each precast hollow slab plate, therefore the shear behavior that seam is cut with scissors between plate determines the whole of Hollow Slab Beam Bridge
Body stress performance.
The safety stock of conventional hollow board concrete hinge seam is far below prefabricated harden structure itself, since hinge seam is excessively narrow
Space makes hinge seam concrete pouring quality be not easy to ensure, and cohesive force can also weaken between new-old concrete, be cut with scissors between usual plate
Seam steel bar arrangement is on the low side, and pre-buried lateral connection rigidity of soft tissues degree Shortcomings, tensile capacity is relatively low, to function well as
Lateral connection acts on so that hollow slab bridge insufficient rigidity, bridge integrity are poor.When a large amount of differences occurs in hinge seam between Method Pre-stress Concrete Hollow Slab
When the breakage of degree, then cause bridge structure that related disease occurs, common bridge floor occurs single after hinge seam direction longitudinal cracking
Plate stress etc. will finally cause structural bearing capacity to reduce.Such as three bridge access bridge right-hand lane part bridge of the Qianjiang of Hangzhou in 2011
The unexpected slump in face, the access bridge superstructure collapsed are prefabricated concrete hollow slab, and hinge seam construction is weaker between plate, is overloading
Vehicle accumulates over a long period under constantly effect, and hinge seam, united layer and pave-load layer are finally overloading from crack is generated to cracking, fracture
Cause edge cored slab to overturn and collapse under lorry impact force action, generates serious consequence.
Invention content
It is excellent to provide one kind reasonable for structure, economic security, switching performance aiming at the deficiencies in the prior art by the present invention
Cored slab hinge seam Shear connection construction and construction technology.
To achieve the goals above, the cored slab hinge seam Shear connection construction designed by the present invention, including same plane are vertical
Form hinge seam to the cored slab mutually spliced, between the cored slab, the hinge stitch in be perfused with concrete, on the cored slab
Side is united layer, and the united layer is formed by concreting, is characterized in that:
Hinged seam shear connector is also set up in the hinge seam, the hinge seam shear connector includes that opposition setting is stitched in hinge
Steel panel on the cored slab side wall of both sides is connected with shearing peg and PBL shear connectors, the shearing peg position in the steel panel
It in steel panel and cored slab connecting side, and is embedded in cored slab, the PBL shear connectors are located at hinge seam side, and hinge seam both sides are corresponding
PBL shear connectors are by running through bar connecting, to realize the mutual splicing of cored slab.
Preferably, the shearing peg is arranged symmetrically with PBL shear connectors along steel panel.So that shearing peg is sheared with PBL
The Shear transfer path of key is succinct and power transmission is reliable.
Further, several circular connecting holes are provided on the PBL shear connectors, it is described to pass through connection through reinforcing bar
Corresponding PBL is sheared and is keyed by hole.It can be achieved through reinforcing bar and hole concrete tenon synergistic effect Transfer of Shear, construction is more
Add facility, and also can be used as the stiffener of hinge seam concrete through reinforcing bar.
A more step, the connecting hole interlaced arrangement.The shearing power transmission of PBL shear connectors is more reasonable, acts on PBL shear connectors
Shear stress relatively dispersion and uniformly.
Still further, the hinge seam shear connector is using double PBL shear connector connection structures.Double PBL shear connectors and institute
Pre-buried shearing peg and steel panel cooperation are more preferable, keep structure more secured.
Still further, described use finish rolling deformed bar or regular reinforcement through reinforcing bar.Shearing size feelings are stitched according to hinge
Condition selects finish rolling deformed bar or regular reinforcement, wherein finish rolling deformed bar shear behavior is more preferable.
Still further, the hinge seam shear connector is provided with several groups, arranged for interval is in longitudinal hinge seam.According to
Stressing conditions are longitudinally arranged shear connector, reinforce hinge seam integrated connection effect between Method Pre-stress Concrete Hollow Slab.
Preferably, hinge seam bottom uses mortar joint filling, and the hinge sews on portion and united layer uses steel fibre UEA
Expansive concrete.Reduce conjunction old and new concret facial cleft seam.
Still further, further including reinforcing rib, the reinforcing rib is placed in hinge seam or a part is arranged in hinge seam, separately
A part is embedded in cored slab, and the reinforcing rib is located between two hinge seam shear connectors.Reinforce connecting between Method Pre-stress Concrete Hollow Slab
It connects, increase hinge seam concrete globality to improve shear resistance.
A kind of construction technology that the cored slab hinge seam Shear connection as described in power 1 constructs, includes the following steps：
Step 1:Shearing peg is welded in steel panel, and in precast hollow slab, by the steel with shearing peg
Siding is embedded on cored slab side wall, wherein the shearing peg is located in cored slab；
Step 2：PBL shear connectors are set on the cored slab in step 1, and the PBL shear connectors are welded in steel panel；
Step 3:The cored slab obtained by above-mentioned steps is assembled, hinge seam both sides PBL shear connectors are handed between two Method Pre-stress Concrete Hollow Slabs when assembly
Fork overlapping, and fixed by running through reinforcing bar；
Step 4:Seam is cut with scissors between the Method Pre-stress Concrete Hollow Slab after the completion of assembly to pour, form cored slab hinge seam and cut with concrete
Power connecting structure.
The advantage of the invention is that：
1, the shear connector of shearing peg and PBL shear connector rigid flexible systems is set between Method Pre-stress Concrete Hollow Slab in hinge seam, it can be big
Width improves the shear resistance that seam is cut with scissors between Method Pre-stress Concrete Hollow Slab, enhances effect of the hinge seam as lateral connection between plate, improves
The structural integrity of blank board bridge can preferably transmit bridge floor load, achieve the purpose that the common stress of each plate.
2, hinge seam combines cored slab by hinge seam shear connector between plate, and forms steel-and mix composite structure, both
Steel tension and the characteristic of concrete anti-compression can be made full use of, the deficiency of concrete ductility difference is made up, and coagulation can be made full use of
The good advantage of native durability, anti-fatigue performance is good under the working condition for bearing dynamic load, is cut with scissors between Method Pre-stress Concrete Hollow Slab to improve
Stitch the durability and performance of connection.
3, the shearing peg being embedded in cored slab belongs to flexible shear connector, and ductility is good, good deformation performance
The uneven stress between shearing peg can be adjusted, the bearing capacity of all shearing pegs can be given full play to.And PBL shear connectors are made
For rigid shear connector, by concrete tenon in steel plate hole and through the synergistic effect Transfer of Shear of reinforcing bar, shearing resistance is held
Load power is larger, and fatigue behaviour is good, and PBL shear connectors can improve the application property of steel bar arrangement, while can play the work of stiffener
With.The shear connector of composition rigid flexible system is used in combination in shearing peg and PBL shear connectors, can give full play to respective strong point.
Between Method Pre-stress Concrete Hollow Slab of the present invention hinge seam Shear connection tectonic sieving it is novel, reasonable for structure, stress is clear, function admirable and
Fatigue resistance and durability are good, and hollow slab bridge girder construction can be made to form good entirety；Hinge seam connection construction work between Method Pre-stress Concrete Hollow Slab
Skill so that convenient construction, economic security.
Description of the drawings
Fig. 1 is the schematic view of facade structure of invention cored slab hinge seam Shear connection construction.
Fig. 2 cuts with scissors the schematic view of facade structure of seam shear connector between cored slab.
Fig. 3 cuts with scissors the side structure schematic view of seam shear connector between cored slab.
Fig. 4 cuts with scissors the plane arrangement structure schematic diagram of seam shear connector between cored slab.
Fig. 5 cuts with scissors the arrangement schematic diagram for stitching upper and lower shear reinforcement between cored slab.
Fig. 6 cuts with scissors the arrangement schematic diagram of seam cross wise reinforcement and longitudinal reinforcement between cored slab.
In figure：Cored slab 1, hinge seam 2（Wherein：Mortar 2.1）, united layer 3, hinge seam shear connector 4, steel panel 4.1,
Shearing peg 4.2, PBL shear connectors 4.3 run through reinforcing bar 4.4, connecting hole 4.5, reinforcing rib 5（Wherein：Top shear reinforcement 5.1,
Lower part shear reinforcement 5.2, cross wise reinforcement 5.3, longitudinal reinforcement 5.4）.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments：
Cored slab hinge seam Shear connection as shown in the figure constructs, including the cored slab 1 that same plane longitudinally mutually splices, empty
Hinge seam 2 is formed between core 1, concrete is perfused in hinge seam 2,1 top of cored slab is united layer 3, and united layer 3 is by coagulation
Soil pours, and in order to reinforce hinge seam integrated connection effect between Method Pre-stress Concrete Hollow Slab, several groups hinge seam Shear connection is provided in hinge seam 2
Part 4, hinge seam 4 arranged for interval of shear connector are set in longitudinal hinge seam 2 generally according to situations such as cored slab hinge crack structure stress
Set longitudinal pitch.Hinge seam shear connector 4 includes the steel panel 4.1 that opposition is arranged on hinge seam 2 both sides cored slab, 1 side wall, steel
Shearing peg 4.2 and PBL shear connectors 4.3 are connected on siding 4.1, shearing peg 4.2 is located at steel panel 4.1 and connects with cored slab 1
Side is connect, and is embedded in advance in cored slab 1, shearing peg 4.2 is a kind of flexible shear connector, and arrangement is convenient, flexible, can be according to sky
1 side wall dimensions of core and stressing conditions selection peg model and laying mode.PBL shear connectors 4.3 are located at 2 sides of hinge seam, PBL shearings
It is provided with several circular connecting holes 4.5 on key 4.3, the corresponding PBL shear connectors in 2 both sides of hinge seam 4.3 are worn by running through reinforcing bar 4.4
The connection of circular connecting hole 4.5 is crossed, to realize that the mutual splicing of cored slab 1, circular connecting hole 4.5 can be realized through reinforcing bar
4.4 and hole concrete tenon act synergistically Transfer of Shear, construction is more convenient, and also can be used as hinge seam through reinforcing bar 4.4 and mix
Coagulate the stiffener of soil.Shearing power transmission generally for PBL shear connectors 4.3 is more reasonable, acts on cutting for PBL shear connectors 4.3 and answers
Power is relatively disperseed and uniformly, connecting hole 4.5 is generally according to hinge seam 2 both sides PBL shear connectors, 4.3 cross-connect field size between plate and cuts
Situations such as power transmission path be laid staggeredly hole position；There are between certain for mutually matched two PBL shear connectors 4.3 overlapping infall
Gap is not to be close to two-by-two.Shearing size cases are stitched according to hinge, finish rolling deformed bar or regular reinforcement are used through reinforcing bar 4.4,
Wherein, finish rolling deformed bar shear behavior is more preferable.The connection type of shearing peg 4.2 and PBL shear connectors 4.3 and steel panel 4.1
It is welding, and shearing peg 4.2 is embedded on cored slab 1 in advance with steel panel 4.1, in the prefabricated laggard andante of cored slab 1
Between hinge seam 2 both sides PBL shear connectors 4.3 correspond to arrangement position and be welded in pre-buried steel panel 4.1.For stress equalization,
Usual shearing peg 4.2 and PBL shear connectors 4.3 are arranged symmetrically along steel panel 4.1.So that shearing peg 4.2 and PBL shear connectors
4.3 Shear transfer path is succinct and power transmission is reliable.
In order to make PBL shear connectors 4.3 coordinate more preferably with pre-buried shearing peg 4.2 and steel panel 4.1, structure is more firm
Gu the hinge seam shear connector 4 of every group of cored slab 1 uses double 4.3 structure types of PBL shear connectors, and according to the enterprise of hinge seam 2 between plate
Mouth size determines the size of PBL shear connectors 4.3.2 bottom gaps of hinge seam are smaller, pour mixed mud leakage in order to prevent, generally adopt
With 2.1 joint filling of mortar, then use steel fibre UEA expansive concretes, by change the time-varying characteristics of concrete material come
Achieve the purpose that reduce its contraction, creep beharior.Meanwhile sectional jump pours, i.e., along hinge 2 length direction merogenesis segment hoppings of seam
It pours, the drawback for avoiding whole elongated cast-in-place rear concrete shrinkage deformation larger.General hinge seam 2 pours the sky that can derive to splicing
1 top of core forms one layer of united layer 3, and road pavement layer is located at 3 top of united layer.
In order to reinforce globality to improve shear resistance, this programme is also devised with reinforcing rib 5, and reinforcing rib 5 is placed in hinge seam 2
Interior, and between two groups of hinges stitch shear connectors 4, be placed in shown in Fig. 6 in hinge seam 2, reinforcing rib can be by cross wise reinforcement 5.3 and vertical
It is formed to reinforcing bar 5.4.As shown in figure 5, reinforcing rib 5 can be arranged in a part in hinge seam 2, another part is embedded in cored slab
In 1, formed respectively in the top shear reinforcement 5.1 and lower part shear reinforcement 5.2 for cutting with scissors 2 top and the bottom of seam by being arranged.
The construction technology of cored slab hinge seam Shear connection construction of the present invention mainly includes the following steps that：
（1）It is rationally designed by structural requirement, hinge seam shear connector 4 between processing and manufacturing 1 plate of cored slab, and will first shear bolt
Nail 4.2 is welded in steel panel 4.1；By structural requirement precast hollow slab 1, and when prefabricated, shearing peg 4.2 will be welded with
Steel panel 4.1 is embedded on 1 side wall of cored slab, and shearing peg 4.2 is located at cored slab side, and is embedded in advance in cored slab 1；
（2）It is accurately positioned PBL shear connectors 4.3 and longitudinal measure is on pre-buried 4.1 outside of steel panel；
（3）Cored slab 1 is assembled by structural requirement, is attached between each plate plate, 4.3 hole of hinge 2 both sides PBL shear connectors of seam between plate
Position matching, is used in combination and is fixed through reinforcing bar 4.4；
（4）Pouring concrete after cutting with scissors seam 2 and united layer 3 of constructing by structural requirement forms cored slab hinge seam connecting structure, shape
At bridge entirety superstructure.
Cored slab hinge seam Shear connection structural form of the present invention makes full use of steel and concrete material characteristic, makes its stress
It is more reasonable, easy for construction, overall economic efficiency is good.Compared with prior art, cored slab hinge seam Shear connection structure of the present invention
It makes and the advantages of construction technology is：
1, the shear connector of shearing peg and PBL shear connector rigid flexible systems is set between Method Pre-stress Concrete Hollow Slab in hinge seam, it can be big
Width improves the shear resistance that seam is cut with scissors between Method Pre-stress Concrete Hollow Slab, enhances effect of the hinge seam as lateral connection between plate, improves
The structural integrity of blank board bridge can preferably transmit bridge floor load, achieve the purpose that the common stress of each plate.
2, hinge seam combines cored slab by shear connector between plate, and forms steel-and mix composite structure, Ji Nengchong
Divide the characteristic using steel tension and concrete anti-compression, makes up the deficiency of concrete ductility difference, and concrete can be made full use of resistance to
The good advantage of long property, anti-fatigue performance is good under the working condition for bearing dynamic load, connects to improve hinge seam between Method Pre-stress Concrete Hollow Slab
The durability and performance connect.
3, the shearing peg being embedded in cored slab belongs to flexible shear connector, and ductility is good, good deformation performance
The uneven stress between peg can be adjusted, the bearing capacity of all pegs can be given full play to.And PBL shear connectors are cut as rigidity
Power connector, by concrete tenon in steel plate hole and through the synergistic effect Transfer of Shear of reinforcing bar, shear-carrying capacity is larger,
Fatigue behaviour is good, and PBL shear connectors can improve the application property of steel bar arrangement, while can play the role of stiffener.Shear bolt
The shear connector of composition rigid flexible system is used in combination in nail and PBL shear connectors, can give full play to respective strong point.
4, it after the steel panel in cored slab hinge seam shear connector is embedded in precast hollow slab by shearing peg, then carries out
The outside for being accurately positioned and being welded on pre-buried steel panel of PBL shear connectors, i.e. first pre-buried shearing peg and steel panel repositioning weldering
PBL shear connectors are connect, processing, installation accuracy are high, convenient construction so that hollow board prefabrication and joint connection in site construction technology are simply easy
Row, reliable in quality, economic security are reasonable.
5, construction using the present invention and construction technology can improve rigidity, durability and the peace of hollow slab bridge girder construction
Quan Xing makes whole force-bearing situation be improved, and can be effectively prevented from conventional concrete cored slab or prefabricated concrete hollow slab
The generation of bridge defect saves later stage bridge maintenance and maintenance and reinforcement expense, extends the service life of bridge.
Claims (10)
1. a kind of cored slab hinge seam Shear connection constructs, including the cored slab (1) that same plane longitudinally mutually splices, described hollow
Hinge seam (2) is formed between plate, concrete is perfused in the hinge seam (2), is united layer (3), institute above the cored slab (1)
United layer (3) is stated to be formed by concreting, it is characterised in that：Hinged seam shear connector is also set up in the hinge seam (2)
(4), the hinge seam shear connector (4) includes steel panel of the opposition setting on hinge seam (2) both sides cored slab (1) side wall
(4.1), shearing peg (4.2) and PBL shear connectors (4.3), the shearing peg (4.2) are connected on the steel panel (4.1)
It positioned at steel panel (4.1) and cored slab (1) connecting side, and is embedded in cored slab (1), the PBL shear connectors (4.3) are located at hinge and stitch
(2) side, the corresponding PBL shear connectors (4.3) in hinge seam (2) both sides are by running through reinforcing bar (4.4) connection, to realize cored slab (1)
Mutually splicing, the shearing peg (4.2) and PBL shear connectors (4.3) of the shear connector (4) are vertically arranged in hinge is stitched.
2. cored slab hinge seam Shear connection construction according to claim 1, it is characterised in that：The shearing peg (4.2)
It is arranged symmetrically along steel panel with PBL shear connectors (4.3).
3. cored slab hinge seam Shear connection construction according to claim 2, it is characterised in that：The PBL shear connectors (4.3)
On be provided with several circular connecting holes (4.5), it is described to cut corresponding PBL across connecting hole (4.5) through reinforcing bar (4.4)
Power key (4.3) connects.
4. cored slab hinge seam Shear connection construction according to claim 3, it is characterised in that：The connecting hole (4.5) is handed over
Mistake arrangement.
5. cored slab hinge seam Shear connection construction according to claim 4, it is characterised in that：The hinge stitches shear connector
(4) using double PBL shear connector (4.3) connection structures.
6. cored slab hinge seam Shear connection construction according to claim 5, it is characterised in that：It is described to run through reinforcing bar (4.4)
Using finish rolling deformed bar or regular reinforcement.
7. cutting with scissors seam Shear connection construction according to cored slab according to any one of claims 1 to 6, it is characterised in that：The hinge
Seam shear connector (4) is provided with several groups, and arranged for interval is in longitudinal hinge seam (2).
8. cored slab hinge seam Shear connection construction according to claim 7, it is characterised in that：It adopts the hinge seam (2) bottom
With mortar joint filling, hinge seam (2) top and united layer (3) use steel fibre UEA expansive concretes.
9. cored slab hinge seam Shear connection construction according to claim 8, it is characterised in that：Further include reinforcing rib (5), institute
State that reinforcing rib (5) is placed in hinge seam (2) or a part is arranged in hinge seam (2), another part is embedded in cored slab (1),
The reinforcing rib (5) is located between two groups of hinges seam shear connectors (4).
10. a kind of construction technology that the cored slab hinge seam Shear connection as described in power 1 constructs, includes the following steps：
Step 1：Shearing peg is welded in steel panel, and in precast hollow slab, the steel panel with shearing peg is pre-
It is embedded on cored slab side wall, wherein the shearing peg is located in cored slab；
Step 2：PBL shear connectors are set on the cored slab in step 1, and the PBL shear connectors are welded in steel panel；
Step 3：The cored slab obtained by above-mentioned steps is assembled, hinge seam both sides PBL shear connectors intersect weight between two Method Pre-stress Concrete Hollow Slabs when assembly
It is folded, and fixed by running through reinforcing bar；
Step 4：Seam is cut with scissors between the Method Pre-stress Concrete Hollow Slab after the completion of assembly to pour, form cored slab hinge seam shearing and connect with concrete
Connect construction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610437324.0A CN106012806B (en) | 2016-06-17 | 2016-06-17 | Cored slab hinge seam Shear connection construction and construction technology |
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| CN201610437324.0A CN106012806B (en) | 2016-06-17 | 2016-06-17 | Cored slab hinge seam Shear connection construction and construction technology |
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| CN106012806B true CN106012806B (en) | 2018-09-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400667A (en) * | 2016-11-16 | 2017-02-15 | 上海市城市建设设计研究总院 | Hollow plate beam structure for ultrahigh performance concrete hinge joint connection |
| CN108625278B (en) * | 2018-05-22 | 2023-10-31 | 信阳师范学院 | Hollow slab bridge hinge joint connecting piece and stress checking calculation method thereof |
| CN109295849A (en) * | 2018-10-31 | 2019-02-01 | 福州大学 | A kind of cored slab hinge seam construction and its construction method with anchor plate |
| CN112626998A (en) * | 2021-01-06 | 2021-04-09 | 中冶南方城市建设工程技术有限公司 | Bridge with bridge hollow slab connecting device and construction method thereof |
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| CN106012806A (en) | 2016-10-12 |
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