CN108330823A - Assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure and construction method - Google Patents
Assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure and construction method Download PDFInfo
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- CN108330823A CN108330823A CN201810135992.7A CN201810135992A CN108330823A CN 108330823 A CN108330823 A CN 108330823A CN 201810135992 A CN201810135992 A CN 201810135992A CN 108330823 A CN108330823 A CN 108330823A
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- bridge
- reinforced concrete
- steel reinforced
- composite beam
- concrete composite
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/067—Flat continuous joints cast in situ
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure, including the longitudinal joint filler material being cast in along longitudinal direction between the ongitudinal recess of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels and it is arranged in ongitudinal recess and is separately connected the bolt connections of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels, the system of being bolted includes the billet of the pre-embedded bolt being embedded in respectively in corresponding prefabricated steel reinforced concrete composite beam bridge panel and the pre-embedded bolt in the adjacent prefabricated steel reinforced concrete composite beam bridge panel of lateral connection two, longitudinal joint filler material is cast on billet and fills the end beyond billet of pre-embedded bolt.The present invention also provides a kind of construction methods of assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure.The present invention is bolted system using steel plate and pre-embedded bolt composition, and connecting structure is simple, intensity is high, bearing capacity is big, highly reliable, easy construction；Component makes in factory, is not affected by the external environment, and construction quality can ensure.
Description
Technical field
The present invention relates to assembled steel reinforced concrete composite beam bridge floorings longitudinal joint interconnection technique fields, in particular to a kind of assembled
Steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure and construction method.
Background technology
Assembled steel reinforced concrete composite beam bridge is made of steel girder and concrete slab, has given full play to steel and concrete material
Expect respective mechanical property.Steel girder and the concrete slab concentration pre-casting in factory, transport to construction site are spelled
Dress, then pouring structure seam is to form overall structure and continuous system.
To reduce the lifting weight of steel reinforced concrete combination beam prefabricated component and being readily transported, assembled steel reinforced concrete composite beam bridge generally exists
Longitudinal seam is set on the floorings of adjacent two girder middle, and splicing prefabricated components completion after-pouring joint concrete forms whole
Body.
Currently, common floorings longitudinal joint connecting structure, mostly uses prefabricated bridge protruding bar and add and pour and prefabricated bridge
Mode of the panel with the concrete of label.Prefabricated bridge protruding bar is generally annular in seam or form of straight lines, only ties up
It pricks or when without processing, seam connection reliability is insufficient, easy tos produce disease.According to reinforcement welding, then site welding workload
Greatly, and by site operation environment it is affected.
Therefore, it is really necessary to develop a kind of new assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure, to overcome
The problem of above-mentioned longitudinal seam connection.
Invention content
The object of the present invention is to provide a kind of assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure, Neng Goubao
Demonstrate,prove the intensity and reliability of longitudinal joint connection.
To achieve the above object, the assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure designed by the present invention includes
It the longitudinal joint filler material that is cast in along longitudinal direction between the ongitudinal recess of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels and sets
Set in the ongitudinal recess and be separately connected two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels bolt connection
System, the system that is bolted includes the pre-embedded bolt being embedded in respectively in the corresponding prefabricated steel reinforced concrete composite beam bridge panel
And the billet of the pre-embedded bolt in the adjacent prefabricated steel reinforced concrete composite beam bridge panel of lateral connection two, the longitudinal joint are filled out
Charge is cast on the billet and fills the end beyond the billet of the pre-embedded bolt.
Preferably, the lateral cross section of the ongitudinal recess is the band form of grooves with upper angle and inferior horn, described
The upper angular prefabricated steel reinforced concrete composite beam bridge panel sunken inside, the upper surface at the upper angle and the suitable bridge of vertical direction to plane it
Between transversely extend to corresponding another prefabricated steel reinforced concrete composite beam bridge panel at vertical direction angle α, the inferior horn, institute
State between the upper surface of inferior horn and the plane of horizontal direction horizontally angle β, lower face and the inferior horn at the upper angle
Upper surface it is coplanar.
Preferably, the vertical direction angle α is 45 °, and the horizontal direction angle β is 50 °, the inferior horn
Lower face is the horizontal plane that the vertical plane height h apart from the lower face of the prefabricated steel reinforced concrete composite beam bridge panel is 7.5cm.
Preferably, it is embedded with transversely horizontally disposed reinforcement steel in the prefabricated steel reinforced concrete composite beam bridge panel
Muscle, the prefabricated steel reinforced concrete composite beam bridge panel is interior to be embedded with transversely horizontally disposed connection steel above the stiffener
The connection reinforcing bar embedded section of muscle, the connection reinforcing bar is embedded in prefabricated steel reinforced concrete composite beam bridge panel, the company of the connection reinforcing bar
It connects bar connecting section to stretch into certain distance in the ongitudinal recess in the horizontal direction and bend downward, two pieces laterally adjacent described
The connection bar connecting section of the corresponding connection reinforcing bar in prefabricated steel reinforced concrete composite beam bridge panel is in the ongitudinal recess
It interior lateral overlap and is bound.
Preferably, it is described be bolted system along bridge to being equally spaced, the cloth for being bolted system
It is 2~4 times of the stiffener along suitable bridge to spacing to set spacing, and the longitudinal joint filler material is ultra-high performance concrete UHPC.
Preferably, the pre-embedded bolt includes screw rod, anchor plate and nut, and the embedded section of the screw rod is embedded in
In prefabricated steel reinforced concrete composite beam bridge panel, the linkage section of the screw rod exceeds the prefabricated steel reinforced concrete combination beam from the ongitudinal recess
Outside floorings, the billet is arranged in the opposite described vertical of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels
To between recess, the linkage section passes through the billet and the anchor plate and the nut check.
Preferably, it is connected between two adjacent screw rods with the U-shaped anchor bar of direction across bridge along bridge, it is each
The U-shaped anchor bar of direction across bridge includes the direction across bridge welding ends of two ends and intermediate direction across bridge bending segment, the direction across bridge
The relatively described direction across bridge welding ends of bending segment is bent on cross-sectional direction, the direction across bridge bending segment towards described in neighbouring plus
Strong reinforcing bar bending and banding fixed；It is connected on the two side of the direction across bridge of each screw rod along bridge to U-shaped anchor bar, often
The one suitable bridge to U-shaped anchor bar include the suitable bridge of two ends to welding ends and intermediate suitable bridge to bending segment, the suitable bridge
It it is 60 ° to bending angle γ, the bending angle γ is bent to form in suitable bridge to the relatively described suitable bridge of bending segment to welding ends.
Preferably, the billet include by-level setting bottom plate and both sides side plate, the side plate with
Angle between horizontal plane is the horizontal direction angle β, and the linkage section offered on the side plate for screw rod extends there through side
Plate is open, and the side plate openings are the slot hole of length L, and the length L meets following formula：L=d+L1× tan (90 ° of-β),
Wherein, d is the nominal outside diameter of the screw rod, and L1 is that the linkage section of the screw rod exceeds the length of the side plate, the side
The upper end of plate opening is the arc to match with the side wall of screw rod.
The present invention also aims to provide a kind of construction of assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure
Method can ensure the intensity and reliability of longitudinal joint connection.
To achieve the above object, the assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure construction designed by the present invention
Method includes the following steps：Step d), setting up the prefabricated steel reinforced concrete composite beam bridge panel of laterally adjacent two pieces and manufacturing template makes
The side end face of prefabricated steel reinforced concrete composite beam bridge panel has ongitudinal recess, sets up two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge faces
The framework of steel reinforcement of intralamellar part, framework of steel reinforcement include transversely horizontally disposed stiffener and it is transversely horizontally disposed and beyond indulge
To the connection reinforcing bar of recess；Step e), the designated position installation in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels
The embedded section of the pre-embedded bolt being bolted in system, the screw rod of pre-embedded bolt is fixed in prefabricated steel reinforced concrete composite beam bridge panel,
The linkage section of screw rod exceeds ongitudinal recess；Step f) pours the coagulation of the prefabricated steel reinforced concrete composite beam bridge panel of laterally adjacent two pieces
Soil is completed prefabricated；Step g) transports prefabricated steel reinforced concrete composite beam bridge panel to construction site, and lifts by crane installation to designated position；
Step h) makes the billet being bolted in system in factory and transports to construction site；Step i), installation billet to cross
Designated position into the ongitudinal recess of two pieces of adjacent prefabricated steel reinforced concrete composite beam bridge panels, by the end sleeve of the linkage section of screw rod
Enter anchor plate, and is screwed into nut and is fastened；Step j) repeats step h)~step i), until being bolted to all along bridge
System is completed to fasten；Step k) exists corresponding connection reinforcing bar in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels
The certain length of linkage section in ongitudinal recess bends downward 90 ° of l-shaped, and by laterally corresponding linkage section in lateral overlap section
It is bound；Step l), on the billet between the ongitudinal recess of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels
Pour longitudinal joint filler material.
Preferably, the construction method further comprises the steps before the step d)：Step a), system
Make the U-shaped anchor bar of direction across bridge and along bridge to U-shaped anchor bar, the U-shaped anchor bar of direction across bridge includes the direction across bridge weldering of two ends
End and intermediate direction across bridge bending segment are connect, direction across bridge bending segment is bent with respect to direction across bridge welding ends on cross-sectional direction, along bridge
To U-shaped anchor bar include two ends suitable bridge to welding ends and intermediate suitable bridge to bending segment, suitable bridge is relatively suitable to bending segment
Bridge to welding ends along bridge to being bent to form bending angle γ；Step b), both sides are welded above and below the direction across bridge of the screw rod of pre-embedded bolt
It connects along bridge to the suitable bridge of U-shaped anchor bar to welding ends, pre-embedded bolt is welded on to a welding ends of U-shaped anchor bar along bridge
The upside of direction across bridge, another welding ends are welded on the downside of pre-embedded bolt direction across bridge, and two on the same screw rod are along bridge to U
Type anchor bar along bridge to being symmetrically welded；Step c), it is suitable in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels respectively
Bridge welds the direction across bridge welding ends of the U-shaped anchor bar of direction across bridge, the U-shaped anchor bar of direction across bridge to two neighboring pre-embedded bolt both sides
Direction across bridge bending segment stretch to specific bit to the lower end of bending segment from soldered suitable bridge to the suitable bridge of U-shaped anchor bar
It sets, the U-shaped anchor bar of same root direction across bridge is welded on suitable bridge to the same side of two neighboring pre-embedded bolt；In the step e)
In, the direction across bridge bending segment of the U-shaped anchor bar of direction across bridge and neighbouring stiffener are subjected to banding fixed.
The beneficial effects of the invention are as follows：The assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure of the present invention and construction
Method is bolted system with pre-embedded bolt composition using steel plate and is attached, connecting structure is simple, intensity is high, bearing capacity is big,
Highly reliable, easy construction；Each component batch making in factory, is not affected by the external environment, and construction quality can ensure.
Description of the drawings
Fig. 1 is the dress of the assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure of preferred embodiment using the present invention
Cross-sectional configuration schematic diagram with formula steel reinforced concrete composite beam bridge floorings.
Fig. 2 is the dress of the assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure of preferred embodiment using the present invention
Longitudinal overlooking structure diagram with formula steel reinforced concrete composite beam bridge floorings.
Fig. 3 is the cross-sectional configuration schematic diagram of the prefabricated steel reinforced concrete composite beam bridge panel in Fig. 1.
Fig. 4 is the cross-sectional configuration schematic diagram of the prefabricated steel reinforced concrete composite beam bridge panel in Fig. 1.
Fig. 5 is the transversary schematic diagram of the pre-embedded bolt in the bolt connection in Fig. 1.
Fig. 6 is the vertical structure schematic diagram of the pre-embedded bolt in the bolt connection in Fig. 1.
Fig. 7 is the transversary schematic diagram of the billet in the bolt connection in Fig. 1.
Fig. 8 is the vertical structure schematic diagram of the billet in the bolt connection in Fig. 1.
Fig. 9 is longitudinal overlooking structure diagram of the billet in the bolt connection in Fig. 1.
Figure 10 is the mounting means schematic diagram of the bolt connection in Fig. 1.
Each part numbers are as follows in figure：Prefabricated steel reinforced concrete composite beam bridge panel 10：Ongitudinal recess 11, stiffener 12, connection
Reinforcing bar 13；Upper angle 111, inferior horn 112；Connect reinforcing bar embedded section 131, connection bar connecting section 132；Longitudinal joint filler material 20；Bolt
Linked system 30：Pre-embedded bolt 31, billet 32；Screw rod 311, anchor plate 312, nut 313, the U-shaped anchor bar of direction across bridge
314, along bridge to U-shaped anchor bar 315；Embedded section 3111, linkage section 3112；Direction across bridge welding ends 3141, direction across bridge bending end
3142；Along bridge to welding ends 3151, along bridge to bending end 3152；Bottom plate 321, side plate 322, side plate openings 3221.
Specific implementation mode
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
It please refers to Fig.1 and Fig. 2, the assembled steel reinforced concrete composite beam bridge floorings longitudinal joint of the preferred embodiment of the present invention connects structure
It makes and is arranged between the lateral ongitudinal recess 11 of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10, be used for two pieces of cross
It is attached to adjacent prefabricated steel reinforced concrete composite beam bridge panel 10.In diagram embodiment, assembled steel reinforced concrete composite beam bridge floorings
Longitudinal joint connecting structure includes the ongitudinal recess 11 for being cast in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10 along longitudinal direction
Between longitudinal joint filler material 20 and be arranged in the ongitudinal recess 11 and be separately connected two pieces of laterally adjacent prefabricated steel reinforced concrete combination beams
The bolt connection 30 of floorings 10, is bolted system 30 and connects two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels
10, longitudinal joint filler material 20 pours the end beyond billet 32 for being filled on billet 32 and filling pre-embedded bolt 31, pours
The filler material 20 for being filled in longitudinal joint between ongitudinal recess 11 connects two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10
It shapes integral.
Please refer to Fig. 3 and Fig. 4, the cross of the ongitudinal recess 11 of the opposite side end face of prefabricated steel reinforced concrete composite beam bridge panel 10
It is the band form of grooves with upper angle 111 and inferior horn 112 to section.The upper angle 111 of ongitudinal recess 11 is to prefabricated steel reinforced concrete combination beam
10 sunken inside of floorings, thereon the suitable bridge of end face and vertical direction between plane at vertical direction angle α, vertical direction angle
α is 45 °.The inferior horn 112 of ongitudinal recess 11 transversely extends to corresponding prefabricated steel reinforced concrete composite beam bridge panel 10, thereon end face
Horizontally angle β, horizontal direction angle β are 50 ° between the plane of horizontal direction.The lower face at upper angle 111 and inferior horn
112 upper surface is coplanar (with horizontal plane at the plane of horizontal sextant angle β).The lower face of inferior horn 112 is horizontal plane, arrives pre-manufactured steel
The vertical plane height h of the lower face of mixed composite beam bridge panel 10 is 7.5cm.The ongitudinal recess of prefabricated steel reinforced concrete composite beam bridge panel 10
11 form increases the area of new-old concrete contact, and the generation of prefabricated bridge abutment joint inner concrete is made to bond effect, from
And strengthen the combination effect of new-old concrete.
Transversely horizontally disposed stiffener 12 is embedded in prefabricated steel reinforced concrete composite beam bridge panel 10, stiffener 12 is complete
Portion is embedded in prefabricated steel reinforced concrete composite beam bridge panel 10, to increase the structural strength of prefabricated steel reinforced concrete composite beam bridge panel 10.It is prefabricated
Transversely horizontally disposed connection reinforcing bar 13 is embedded in steel reinforced concrete composite beam bridge panel 10, connection reinforcing bar 13 is located at stiffener 12
Top.The connection reinforcing bar embedded section 131 of connection reinforcing bar 13 is embedded in prefabricated steel reinforced concrete composite beam bridge panel 10, and connection reinforcing bar connects
It connects section 132 and stretches into certain distance in the ongitudinal recess 11 of prefabricated steel reinforced concrete composite beam bridge panel 10 in the horizontal direction, and bend downward
It is 90 °, L-shaped.The connection reinforcing bar of connection reinforcing bar 13 in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10
Linkage section 132 lateral overlap and is bound in ongitudinal recess 11.In this way, increasing anchor of the connection reinforcing bar 13 in ongitudinal recess 11
Gu length, while the cementation between connection reinforcing bar 13 and longitudinal joint filler material 20 is improved, effectively strengthen the connection of longitudinal joint
Effect.
As shown in Figure 2, be bolted system 30 along bridge to being equally spaced, arrangement spacing be stiffener 12 along bridge to
2~4 times of spacing.
Fig. 5 and Fig. 6 are please referred to, it includes being embedded in corresponding prefabricated steel reinforced concrete composite beam bridge panel respectively to be bolted system 30
The steel pad of pre-embedded bolt 31 in the adjacent prefabricated steel reinforced concrete composite beam bridge panel 10 of pre-embedded bolt 31 and lateral connection two in 10
Plate 32.Pre-embedded bolt 31 is embedded in prefabricated steel reinforced concrete composite beam bridge panel 10, and end exceeds pre-manufactured steel from ongitudinal recess 11
Outside mixed composite beam bridge panel 10, pre-buried pre-embedded bolt 31 connects in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10
To billet 32.The opposite ongitudinal recess in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10 is arranged in billet 32
Between 11, both sides are connected separately with the end of the pre-embedded bolt 31 protruded out outside the prefabricated steel reinforced concrete composite beam bridge panel 10 of respective side
Head.
Pre-embedded bolt 31 includes screw rod 311, anchor plate 312 and nut 313, and one end embedded section 3111 of screw rod 311 is pre-buried
Enter in prefabricated steel reinforced concrete composite beam bridge panel 10, the other end (linkage section 3112) (lower end of upper angle (111) in ongitudinal recess 11
Face, the upper surface of inferior horn 112, at the plane with horizontal plane at horizontal sextant angle β) vertical protrude out.The linkage section of screw rod 311
3112 are locked after billet 32 and anchor plate 312 with nut 313.Length (buried depth) L of the embedded section 3111 of screw rod 3112
For 10cm.
It is connected between two adjacent screw rods 311 with the U-shaped anchor bar 314 of the direction across bridge of both sides along bridge.Direction across bridge is U-shaped
Anchor bar 314 includes the direction across bridge welding ends 3141 of two ends and intermediate direction across bridge bending segment 3142, direction across bridge bending segment
3142 opposite direction across bridge welding ends 3141 are bent on cross-sectional direction, and direction across bridge bending segment 3142 is towards neighbouring stiffener
12 bendings make direction across bridge bending segment 3142 can be close with stiffener 12 and bind together.Each U-shaped anchor bar of direction across bridge
314 direction across bridge welding ends 3141 is respectively welded to the suitable bridge of corresponding screw rod 311 on side wall.Along bridge to two adjacent spiral shells
It is connected with the U-shaped anchor bar 314 of two direction across bridge between bar 311.
Suitable bridge is connected on the two side of the direction across bridge of each screw rod 311 to U-shaped anchor bar 315.Each suitable bridge is to U-shaped
Suitable the bridge of anchor bar 315 including two ends is to welding ends 3151 and intermediate suitable bridge to bending segment 3152, and suitable bridge is to bending segment
3152 be relatively 60 ° to bending angle γ, bending angle γ is bent to form in suitable bridge to welding ends 3151 along bridge.Along bridge to welding ends
Height H of 3151 upper end apart from bending place is 5cm.Each suitable bridge divides to the suitable bridge of U-shaped anchor bar 315 to welding ends 3151
It is not soldered on the direction across bridge side wall of screw rod 311.The suitable bridge of the direction across bridge both sides of each screw rod 311 is to 315 phase of U-shaped anchor bar
It is bent to (outside).
Pre-embedded bolt 31 has been effectively fixed pre- to U-shaped anchor bar 315 in the U-shaped anchor bar 314 of direction across bridge and suitable bridge
Position in steel reinforced concrete composite beam bridge panel 10 processed, and by friction between reinforcing bar and concrete and be engaged, considerably increase spiral shell
The breakout capacity of bolt linked system 30 fully ensures that the stable connection of the system of being bolted 30.
Fig. 7, Fig. 8 and Fig. 9 are please referred to, billet 32 includes the side plate 322 of the bottom plate 321 and both sides of by-level setting,
Angle between side plate 322 and horizontal plane is horizontal direction angle β, to ensure the upper of side plate and the inferior horn 112 of ongitudinal recess 11
End face is bonded.Side plate openings 3221 are offered on side plate 322, are extended there through for the linkage section 3112 of screw rod 311.
Figure 10 is please referred to, side plate openings 3221 are the slot hole of length L.Since billet is pacified in a manner of from the top down
In ongitudinal recess 11, and the linkage section 3112 of screw rod 311 need to be passed through from corresponding side plate openings 3221, therefore length L
Following formula need to be met：L=d+L1× tan (90 ° of-β), wherein d is the nominal outside diameter of screw rod 311, and L1 is the company of screw rod 311
Connect the length that section 3111 exceeds side plate 322.The upper end of side plate openings 3221 is the arc to match with the side wall of screw rod 311.Arc
Shape trepanning is vertically-mounted from top to bottom convenient for billet 32, and the fastening completion back side panel of nut 313 is open 3221 voids can be by rear
Longitudinal joint filler material 20 is poured to fill up.Longitudinal joint filler material 20 uses ultra-high performance concrete UHPC materials, intensity is high, durability is good,
Fracture toughness is big, and has stronger microcrack self-healing ability, can effectively improve the stress performance of longitudinal joint junction, ensures vertical
Stitch the reliability of connection.Monolithic billet 32 along bridge to fixing 2 pre-embedded bolts 31, and billet 32 along bridge to close cloth
It sets.
The construction method of the assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure of the preferred embodiment of the present invention, tool
Body includes the following steps：
Step a) makes the U-shaped anchor bar 314 of direction across bridge and suitable bridge to U-shaped anchor bar 315.
The U-shaped anchor bar 314 of direction across bridge includes the direction across bridge welding ends 3141 of two ends and intermediate direction across bridge bending segment
3142, direction across bridge bending segment 3142 is bent with respect to direction across bridge welding ends 3141 on cross-sectional direction.
Along bridge to suitable the bridge of U-shaped anchor bar 315 including two ends to welding ends 3151 and the suitable bridge of centre to bending segment
3152, along bridge to bending segment 3152 relatively along bridge to welding ends 3151 along bridge to being bent to form bending angle γ.
Step b), suitable bridge is welded to U-shaped anchor bar 315 in both sides above and below the direction across bridge of the screw rod 311 of pre-embedded bolt 31
Suitable bridge to welding ends 3151.
When welding, the upper of 31 direction across bridge of pre-embedded bolt is welded on to a welding ends 3151 of U-shaped anchor bar 315 along bridge
Side, another 3151 end of welding ends are welded on the downside of 31 direction across bridge of pre-embedded bolt, two on the same screw rod 311 along bridge to
U-shaped anchor bar 315 along bridge to being symmetrically welded.
Step c), respectively in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10 along bridge to two neighboring pre-buried spiral shell
Weld the direction across bridge welding ends 3141 of the U-shaped anchor bar of direction across bridge 314 in 31 both sides of bolt.
When welding, the direction across bridge bending segment 3142 of the U-shaped anchor bar of direction across bridge 314 is from soldered suitable bridge to U-shaped anchor
Gu the suitable bridge of reinforcing bar 315 stretches to designated position to the lower end of bending segment 3152, the U-shaped anchor bar 314 of same root direction across bridge welds
Suitable bridge is connected on to the same side of two neighboring pre-embedded bolt 31.
Step d), setting up the prefabricated steel reinforced concrete composite beam bridge panel of laterally adjacent two pieces 10 and manufacturing template makes prefabricated steel reinforced concrete
The side end face of composite beam bridge panel 10 has ongitudinal recess 11, sets up the prefabricated steel reinforced concrete composite beam bridge panel of laterally adjacent two pieces 10
Internal framework of steel reinforcement, framework of steel reinforcement include transversely horizontally disposed stiffener 12 and transversely horizontally disposed and beyond indulging
To the connection reinforcing bar 13 of recess 11；
Step e), the designated position installation bolt connection in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10
The embedded section 3111 of pre-embedded bolt 31 in system 30, the screw rod 311 of pre-embedded bolt 31 is fixed on prefabricated steel reinforced concrete composite beam bridge face
In plate 10, the linkage section 3112 of screw rod 311 exceeds ongitudinal recess 11.
The U-shaped anchor bar 314 of two direction across bridge welded on two neighboring pre-embedded bolt 31, a binding is in stiffener
13 lower edge, in addition one binding stiffener 13 upper limb.
Step f), pour the prefabricated steel reinforced concrete composite beam bridge panel of laterally adjacent two pieces 10 concrete complete it is prefabricated.
When prefabricated, check that review is bolted the installation site of 30 pre-buried part of system, adjusted to undesirable
Whole correction.
Step g) transports prefabricated steel reinforced concrete composite beam bridge panel 10 to construction site, and lifts by crane installation to designated position.
Step h) makes the billet 32 being bolted in system 30 in factory and transports to construction site.
Billet 32 along bridge to error in length should be not more than 1mm.
Step i), the ongitudinal recess 11 of installation billet 32 to two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10
In designated position, anchor plate 312 is inserted in the end of the linkage section 3112 of screw rod 311, and be screwed into nut 313 and fastened；
Step j) repeats step h)~step i), until completing fastening to all systems 30 that are bolted along bridge.
When bolt fastens, bolt connection 30 on laterally adjacent two pieces of prefabricated steel reinforced concrete composite beam bridge panels 10 it is tight
Admittedly should symmetrically alternately.
Step k), by corresponding connection reinforcing bar 13 in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10 in longitudinal direction
The certain length of linkage section 132 in recess 11 bends downward 90 degree of l-shaped, and by laterally corresponding linkage section 132 in transverse direction
Overlay segment is bound.
Step l), in billet between the ongitudinal recess 11 of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels 10
Longitudinal joint filler material 20 is poured on 32.
It pours longitudinal joint filler material 20 and uses ultra-high performance concrete UHPC, and fully vibrate, is closely knit.
The assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure of the present invention forms spiral shell using steel plate and pre-embedded bolt
Bolt linked system is attached, and connecting structure is simple, intensity is high, bearing capacity is big, highly reliable, easy construction, wherein pre-buried spiral shell
Bar is welded to connect using the U-shaped anchor bar dissipated around, and is bound with reinforcing bar in prefabricated bridge, and screw rod anchoring can
It leans on, fully ensures the firm of bolt system connection.Longitudinal joint inner filling material uses ultra-high performance concrete UHPC, intensity high, durable
Property it is good, fracture toughness is big, and have stronger microcrack self-healing ability, can effectively improve the stress performance of longitudinal joint junction,
Ensure the reliability of longitudinal joint connection.It is clearly understood that by above-mentioned record, assembled steel reinforced concrete composite beam bridge bridge floor of the invention
The advantages of plate longitudinal joint connecting structure and construction method, is mainly reflected in the following aspects：
It is connect with billet using pre-embedded bolt first, being bolted in system, simple structure, easy construction, connects structure
It is big, highly reliable to make intensity height, bearing capacity.
Second is that each component batch making in factory, is not affected by the external environment, construction quality can ensure.
Third, interior in longitudinal joint filled using ultra-high performance concrete UHPC, intensity is high, durability is good, fracture toughness is big, and
With stronger microcrack self-healing ability, the stress performance of longitudinal joint junction can be effectively improved, ensures the reliable of longitudinal joint connection
Property.
Fourth, " L " type connects the setting of reinforcing bar in longitudinal joint, increase anchorage length of the connection reinforcing bar in newly-laid concrete,
Reinforce the connection effect of longitudinal joint.
In conclusion the assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure and construction method of the present invention use steel
Backing plate is attached with pre-embedded bolt, and ultra-high performance concrete UHPC is filled in longitudinal joint, and is provided with " L " type connection reinforcing bar, even
Simple structure is connect, easy construction, bonding strength is high, bearing capacity is big, highly reliable.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure, it is characterised in that：The longitudinal joint connecting structure packet
Include the longitudinal joint being cast in along longitudinal direction between the ongitudinal recess (11) of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels (10)
Filler material (20) and setting in the ongitudinal recess (11) and are separately connected two pieces of laterally adjacent prefabricated steel reinforced concrete combinations
Beam bridge panel (10) bolt connection (30), it is described be bolted system (30) include be embedded in respectively it is corresponding described pre-
The adjacent prefabricated steel reinforced concrete composite beam bridge of pre-embedded bolt (31) and lateral connection two in steel reinforced concrete composite beam bridge panel (10) processed
The billet (32) of the pre-embedded bolt (31) in panel (10), the longitudinal joint filler material (20) are cast in the billet
(32) on and the end beyond the billet (32) of the pre-embedded bolt (31) is filled.
2. assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure according to claim 1, it is characterised in that：It is described
The lateral cross section of ongitudinal recess (11) be the band form of grooves with upper angle (111) and inferior horn (112), the upper angle (111) to
Prefabricated steel reinforced concrete composite beam bridge panel (10) sunken inside, the upper surface of the upper angle (111) and the suitable bridge of vertical direction are to flat
At vertical direction angle α between face, the inferior horn (112) is transversely to corresponding another prefabricated steel reinforced concrete composite beam bridge panel
(10) extend, horizontally angle β between the upper surface and the plane of horizontal direction of the inferior horn (112), the upper angle
(111) upper surface of lower face and the inferior horn (112) is coplanar.
3. assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure according to claim 2, it is characterised in that：It is described
Vertical direction angle α is 45 °, and the horizontal direction angle β is 50 °, and the lower face of the inferior horn (112) is apart from described prefabricated
The vertical plane height h of the lower face of steel reinforced concrete composite beam bridge panel (10) is the horizontal plane of 7.5cm.
4. assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure according to claim 3, it is characterised in that：It is described
Transversely horizontally disposed stiffener (12), the prefabricated steel reinforced concrete combination are embedded in prefabricated steel reinforced concrete composite beam bridge panel (10)
Transversely horizontally disposed connection reinforcing bar (13) is embedded with above the stiffener (12) in beam bridge panel (10), it is described
The connection reinforcing bar embedded section (131) of connection reinforcing bar (13) is embedded in prefabricated steel reinforced concrete composite beam bridge panel (10), the connection steel
The connection bar connecting section (132) of muscle (13) stretches into the interior certain distance of the ongitudinal recess (11) and is turned under in the horizontal direction
Folding, the corresponding connection reinforcing bar (13) in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels (10) it is described
Connection bar connecting section (132) is in the interior lateral overlap of the ongitudinal recess (11) and is bound.
5. assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure according to claim 4, it is characterised in that：It is described
System (30) is bolted along, to being equally spaced, the arrangement spacing for being bolted system (30) is the reinforcement steel along bridge
For muscle (12) along 2~4 times along bridge to spacing, the longitudinal joint filler material (20) is ultra-high performance concrete UHPC.
6. assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure according to claim 5, it is characterised in that：It is described
Pre-embedded bolt (31) includes screw rod (311), anchor plate (312) and nut (313), the embedded section (3111) of the screw rod (311)
It is embedded in prefabricated steel reinforced concrete composite beam bridge panel (10), the linkage section (3112) of the screw rod (311) is from the ongitudinal recess
(11) at outside beyond the prefabricated steel reinforced concrete composite beam bridge panel (10), the billet (32) is arranged in two pieces of laterally adjacent institutes
Between the opposite ongitudinal recess (11) for stating prefabricated steel reinforced concrete composite beam bridge panel (10), the linkage section (3112) passes through institute
Billet (32) and the anchor plate (312) is stated to lock with the nut (313).
7. assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure according to claim 6, it is characterised in that：Along bridge
The U-shaped anchor bar of direction across bridge (314) is used to connect between two adjacent screw rods (311), each U-shaped anchor of direction across bridge
Gu reinforcing bar (314) includes the direction across bridge bending segment (3142) of the direction across bridge welding ends (3141) and centre of two ends, the cross-bridges
It is bent on cross-sectional direction to the relatively described direction across bridge welding ends (3141) of bending segment (3142), the direction across bridge bending segment
(3142) towards the neighbouring stiffener (12) bending and banding fixed；The two of the direction across bridge of each screw rod (311)
Be connected on side wall along bridge to U-shaped anchor bar (315), each suitable bridge to U-shaped anchor bar (315) include two ends
Along bridge to welding ends (3151) and the suitable bridge of centre to bending segment (3152), the suitable bridge is relatively described suitable to bending segment (3152)
Bridge is 60 ° to bending angle γ, the bending angle γ is bent to form in suitable bridge to welding ends (3151).
8. assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure according to claim 7, it is characterised in that：It is described
Billet (32) includes the side plate (322) of the bottom plate (321) and both sides of by-level setting, the side plate (322) and horizontal plane
Between angle be the horizontal direction angle β, the linkage section (3112) for screw rod (311) is offered on the side plate (322)
Side plate openings (3221) are extended there through, the side plate openings (3221) are the slot hole of length L, and the length L meets following formula：
L=d+L1× tan (90 ° of-β), wherein d is the nominal outside diameter of the screw rod (311), and L1 is the described of the screw rod (311)
Linkage section (3111) exceeds the length of the side plate (322), and the upper end of the side plate openings (3221) is the side with screw rod (311)
The arc that wall matches.
9. a kind of construction method of assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure, includes the following steps：
Step d), setting up the prefabricated steel reinforced concrete composite beam bridge panel (10) of laterally adjacent two pieces and manufacturing template makes prefabricated steel reinforced concrete group
The side end face for closing beam bridge panel (10) has ongitudinal recess (11), sets up the prefabricated steel reinforced concrete composite beam bridge panel of laterally adjacent two pieces
(10) internal framework of steel reinforcement, framework of steel reinforcement include transversely horizontally disposed stiffener (12) and transversely it is horizontally disposed simultaneously
Connection reinforcing bar (13) beyond ongitudinal recess (11)；
Step e), the designated position installation bolt connector in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels (10)
It is the pre-embedded bolt (31) in (30), the embedded section (3111) of the screw rod (311) of pre-embedded bolt (31) is fixed on prefabricated steel reinforced concrete group
It closes in beam bridge panel (10), the linkage section (3112) of screw rod (311) exceeds ongitudinal recess (11)；
Step f), the concrete completion for pouring the prefabricated steel reinforced concrete composite beam bridge panel (10) of laterally adjacent two pieces are prefabricated；
Step g) transports prefabricated steel reinforced concrete composite beam bridge panel (10) to construction site, and lifts by crane installation to designated position；
Step h) makes the billet (32) being bolted in system (30) in factory and transports to construction site；
Step i), the ongitudinal recess of installation billet (32) to two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels (10)
(11) anchor plate (312) is inserted in the end of the linkage section (3112) of screw rod (311), and is screwed into nut in the designated position in
(313) it is fastened；
Step j) repeats step h)~step i), until completing fastening to all systems (30) that are bolted along bridge；
Step k), by corresponding connection reinforcing bar (13) in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels (10) in longitudinal direction
The certain length of linkage section (132) in recess (11) bends downward 90 ° of l-shaped, and will laterally corresponding linkage section (132) exist
Lateral overlap section is bound；
Step l), the billet between the ongitudinal recess (11) of two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels (10)
(32) longitudinal joint filler material (20) is poured on.
10. the construction method of assembled steel reinforced concrete composite beam bridge floorings longitudinal joint connecting structure according to claim 9, special
Sign is that the construction method further comprises the steps before the step d)：
Step a) makes the U-shaped anchor bar of direction across bridge (314) and suitable bridge to U-shaped anchor bar (315), the U-shaped anchoring steel of direction across bridge
Muscle (314) includes the direction across bridge bending segment (3142) of the direction across bridge welding ends (3141) and centre of two ends, direction across bridge bending segment
(3142) opposite direction across bridge welding ends (3141) is bent on cross-sectional direction, along bridge to U-shaped anchor bar (315) include both ends
Suitable the bridge of head to welding ends (3151) and intermediate suitable bridge to bending segment (3152), suitable bridge to bending segment (3152) relatively along bridge to
Welding ends (3151) along bridge to being bent to form bending angle γ；
Step b), suitable bridge is welded to U-shaped anchor bar in both sides above and below the direction across bridge of the screw rod (311) of pre-embedded bolt (31)
(315) suitable bridge is welded on along bridge to a welding ends (3151) of U-shaped anchor bar (315) pre-buried to welding ends (3151)
The upside of bolt (31) direction across bridge, another welding ends (3151) holds the downside for being welded on pre-embedded bolt (31) direction across bridge, same
Two on a screw rod (311) along bridges to U-shaped anchor bar (315) along bridge to being symmetrically welded；
Step c), respectively in two pieces of laterally adjacent prefabricated steel reinforced concrete composite beam bridge panels (10) along bridge to two neighboring pre-embedded bolt
(31) the direction across bridge welding ends (3141) of the both sides welding U-shaped anchor bar of direction across bridge (314), the U-shaped anchor bar of direction across bridge (314)
Direction across bridge bending segment (3142) from soldered suitable bridge to the suitable bridge of U-shaped anchor bar (315) to bending segment (3152)
Lower end stretches to designated position, and the U-shaped anchor bar of same root direction across bridge (314) is welded on suitable bridge to two neighboring pre-embedded bolt
(31) the same side；
In the step e), by the direction across bridge bending segment (3142) of the U-shaped anchor bar of direction across bridge (314) and neighbouring reinforcement steel
Muscle (13) carries out banding fixed.
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| CN109629415A (en) * | 2018-12-07 | 2019-04-16 | 东南大学 | A kind of embedded composite joint steel-UHPC thin plate combined structure system of peg-bolt |
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| CN112411366A (en) * | 2020-03-27 | 2021-02-26 | 中铁第四勘察设计院集团有限公司 | Wet joint connecting structure of precast concrete bridge deck and construction method |
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| CN110552285A (en) * | 2019-09-12 | 2019-12-10 | 广东高恩高速公路有限公司 | Steel-ultrahigh-performance concrete combined cast-in-place wet joint structure and construction method |
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