CN209292891U - A kind of steel-UHPC combined bridge deck structure of non-arrangement of reinforcement - Google Patents
A kind of steel-UHPC combined bridge deck structure of non-arrangement of reinforcement Download PDFInfo
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- CN209292891U CN209292891U CN201821815173.9U CN201821815173U CN209292891U CN 209292891 U CN209292891 U CN 209292891U CN 201821815173 U CN201821815173 U CN 201821815173U CN 209292891 U CN209292891 U CN 209292891U
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Abstract
A kind of steel-UHPC combined bridge deck structure of non-arrangement of reinforcement is made of UHPC floorings, Orthotropic Steel Bridge Deck and connection peg, and steel bar stress and distributing bar is not configured in UHPC floorings main part；Joint area is used cooperatively using key teeth click joint or the plain adapter of close arrangement of reinforcement, key teeth click joint with wavy metal casing and joint screw thread reinforcing bar when the UHPC floorings section cast-in-place.The invention also discloses the construction methods of the combined bridge deck structure.The simple structure of the steel-UHPC combined bridge deck structure, significantly reduce the cost of material of combined bridge deck structure, reduce construction human cost, short construction period, and floorings integrated carrying ability and anti-fatigue ability meet force request, are laid with suitable for the Fatigue Consolidation of Orthotropic Steel Bridge Deck and the mud jacking by duct of newly-built steel bridge.
Description
Technical field
The utility model relates to ultra-high performance concrete combined bridge structures, more particularly, to a kind of steel-of non-arrangement of reinforcement
UHPC combined bridge deck structure.
Background technique
Ultra-high performance concrete (UHPC) is due to excellent in mechanical performance, it is considered to be most innovative cement base engineering material
One of material.Two quasi-representative of floorings asphalt concrete pavement layer rapid wear and steel bridge deck fatigue cracking in steel bridge is solved in order to integrate
Disease problem, steel and ultra-high performance concrete bridge deck structure disclosed in Chinese patent CN 201704626 U, CN205046474U lead to
The intensive configuration reinforcement in ultra-high performance concrete layer is crossed, and the WELDING STUDS by welding on Steel Bridge Deck closely connects the two
It connecing, reduces the Self-Shrinkage Property of UHPC with this, this combined bridge deck structure can significantly improve the rigidity of structure of floorings, from
And the working environment of floorings pave-load layer can be greatly improved, extend the service life of pave-load layer；UHPC layers and orthotropic bridge
Panel cooperative bearing can obviously reduce the Fatigue Stress Amplitude under local wheel load action in cross bridge floor board, to mention
High floorings part and overall mechanical properties.This combined bridge deck structure has extraordinary mechanical property, but its higher is made
Valence hinders the development of this combined bridge deck, wherein the close reinforcement manner used be even more need to spend a large amount of human cost and
Resource consumption, therefore developing a kind of lower steel-UHPC combined bridge deck of project cost will be necessary.
Disclosing 20% average grain diameter of addition in the self-constriction Analysis on Mechanism of rice hull ash inhibition ultra-high performance concrete is 5.6
μm rice hull ash (RHA) shrinkage of UHPC itself can be reduced；And UHPC layers of maintaining process is generally in combined bridge deck
Then first 36~48h of standard curing carries out 90 DEG C of high temperature steam curing 48h, according to existing research after high temperature steam curing
UHPC do not generate contraction strain substantially, therefore need to only pay close attention to the Self-Shrinkage Property in the standard curing phase, in fact UHPC from
Shrinkage is although larger, but since UHPC infant cracking has self-healing capability, cracking resistance is still preferable.Therefore apply
People overcomes those skilled in the art to set arrangement of reinforcement and then reduction UHPC self-constriction frequently with close in the Early self-shrinkage for ignoring UHPC
The technology prejudice of performance proposes that one kind is unworthy of in the case where guaranteeing steel-ultra-high performance concrete combined bridge deck plate stress performance
Muscle, the more convenient and fast steel-UHPC combined bridge deck of construction.
Utility model content
Technical problem to be solved by the utility model is: overcoming the deficiencies of the prior art and provide, a kind of structure is simple, constructs
Convenient and the non-arrangement of reinforcement of good mechanical performance steel-UHPC combined bridge deck structure.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of steel-UHPC combined bridge deck structure of non-arrangement of reinforcement, the steel-UHPC combined bridge deck structure by UHPC floorings,
Orthotropic Steel Bridge Deck and connection peg composition, and steel bar stress and distributing bar is not configured in UHPC floorings main part；
Steel bridge deck is equipped with the connection peg in insertion UHPC floorings, and the connection peg is uniformly equally spacedly distributed in Steel Bridge Deck
On plate, the spacing of adjacent peg is 15cm~55cm.
In a certain example embodiment, the UHPC floorings are formed by integral cast-in-situ or section cast-in-place.
In a certain example embodiment, the adjacent UHPC bridge floor plate unit of UHPC floorings section cast-in-place is engaged using key teeth
The plain adapter of connector connection or intensive arrangement of reinforcement.
In a certain example embodiment, key teeth click joint is inverted trapezoidal connector or "T"-shaped connector.
It is preferred that inverted trapezoidal connector design parameter need to generally meet b2≥10cm；1.6b2≥b1≥1.2b2； 0.8b2≥h≥
0.5b2；80 ° >=β >=60 ° etc. require, and symbol indicates referring to fig. 2；"T"-shaped connector design parameter generally needs to meeth
≥1.5×b2；5cm≤b2Deng requirement, symbol is indicated referring to attached drawing 7；It is improved, is mentioned by the structure to key teeth click joint
It is mutually twisted power between high adjacent UHPC floorings key teeth click joint, and then reduces or even eliminates UHPC floorings because artificial
It is broken and leads to the weakening effect to its joint tensile strength.
In a certain example embodiment, key teeth click joint junction is additionally provided with wavy metal casing and joint screw thread
One end of reinforcing bar, the joint screw thread reinforcing bar is plugged in wavy metal casing, and adjacent UHPC bridge floor is extended down to outside the other end
In plate unit.Wavy metal casing and joint screw thread reinforcing bar significantly improve the bonding strength of key teeth click joint junction.
It is preferred that the diameter of the wavy metal casing is 15~45mm, the length of bellows is the straight of joint screw thread reinforcing bar
5~30 times of diameter, it is preferable that 5~10 times；The joint screw thread reinforcing bar is single layer laying, a diameter of 8~16mm, joint screw thread
The length of reinforcing bar is 15~65 times of its diameter, and it is that it is straight that joint screw thread reinforcing steel bars exposed first pours section length of UHPC floorings out
10~35 times of diameter.
In a certain example embodiment, the wavy metal casing is closed casing or opening with removable rubber sealing-plug
Port sleeve, sealing-plug can be set to wedge shape and be inserted into positioning with matching thread reinforcing bar；When wavy metal inside pipe casing is not provided with positioning
Device passes through the spot welding reinforcing bar locating part progress reinforcing bar limit on spiral.
It is equipped in a certain example embodiment, in the wavy metal casing for the vertical of butt joint spiral limit
Rib, the vertical rib are uniformly distributed along wavy metal internal surface of sleeve pipe circumferential direction.
In a certain example embodiment, the UHPC floorings are that the UHPC with low-shrinkage energy is poured, UHPC
Floorings with a thickness of 35~65mm.
The construction method of the steel-UHPC combined bridge deck structure integral cast-in-situ of the non-arrangement of reinforcement of the utility model one kind, including it is following
Step:
1) connection peg is uniformly equally spacedly welded on steel bridge deck, and extends upwardly to connection peg wait pour
UHPC floorings in；
2) template of UHPC floorings to be poured is arranged on steel bridge deck；
3) UHPC floorings are poured and are conserved.
A kind of construction method of the steel-UHPC combined bridge deck structure section cast-in-place of non-arrangement of reinforcement, comprising the following steps:
1) connection peg is uniformly equally spacedly welded on steel bridge deck, and extends upwardly to connection peg wait pour
UHPC floorings in；
2) it pours and first pours a section UHPC floorings:
The wavy metal casing and template for first pouring section UHPC floorings are arranged on steel bridge deck；
It pours and first pours section UHPC floorings and carry out steam curing；
Mode form removal outside with vertical plane；
3) a section UHPC floorings are poured after pouring:
The linkage interface for section UHPC floorings first being poured with after and pouring section UHPC floorings is carried out dabbing processing and removing outlet
Plug；
UHPC grouting material: form removal is poured into wavy metal casing, and slip casting box is installed, UHPC is poured by slip casting box
Grouting material simultaneously applies pressure to slip casting in wavy metal casing at top；
Be inserted into joint screw thread reinforcing bar: joint screw thread reinforcing bar is inserted into wavy metal casing, and one end is from wavy metal casing
Interior exposed, the length of joint screw thread reinforcing steel bars exposed is 10~35 times of its diameter；
Section UHPC floorings are poured after pouring and are conserved.
The concrete operations of wavy metal casing arrangement are as follows: first built-in metal corrugated bushing, and it is accurately positioned processing, metal wave
The sealing of line bushing well one end, another end opening, and open end is outwardly, sealed end inwardly, prevent from first pouring the UHPC slurry of section into
Enter in metal bellows；The bore of bellows is concordant with linkage interface, convenient for removing end template.
Steel-UHPC the combined bridge deck structure of the non-arrangement of reinforcement of the utility model the utility model has the advantages that structure is simple, in UHPC floorings
Main part no longer prepare steel bar stress and and distributing bar, significantly reduce the cost of material of combined bridge deck structure, eliminate
Arrange the cumbersome process of reinforcing bar, construction human cost reduces, and the period is short, and bridge floor integrated carrying ability and anti-fatigue ability are excellent
It is good.
Steel-UHPC the combined bridge deck structure of non-arrangement of reinforcement, connection peg improve between steel bridge deck and UHPC floorings
Bonding strength avoid the floorings that segmentation pours and show what being broken occurred in junction due to UHPC floorings one-piece casting
As, and improve the holistic resistant behavior of combined bridge deck structure.
The UHPC floorings of section cast-in-place are connected using key teeth click joint, since the structure of key teeth click joint can improve
It is mutually twisted power between adjacent UHPC floorings key teeth click joint, and then reduces or even eliminates UHPC floorings because artificial disconnected
It splits and leads to the weakening effect to its joint tensile strength, it is ensured that the holistic resistant behavior of combined bridge deck structure.
The working procedure of the steel-UHPC combined bridge deck structure of the non-arrangement of reinforcement of the utility model is simple, and short construction period, construction is set
Standby investment is small.
Detailed description of the invention
Fig. 1-is that the structure with concrete steel-UHPC combined bridge deck (section cast-in-place) is not shown in the utility model embodiment 1
It is intended to；
Fig. 2-is UHPC floorings " inverted trapezoidal " connector schematic diagram in the utility model embodiment 1；
Fig. 3-is UHPC floorings " inverted trapezoidal " connector arrangement of reinforcement schematic diagram in the utility model embodiment 1；
Fig. 4-is wavy metal casing, connector spiral shell at UHPC floorings key teeth saddle joint in the utility model embodiment 1
The distribution schematic diagram of line reinforcing bar；
Fig. 5-is the structural schematic diagram of wavy metal casing in the utility model embodiment 1；
Fig. 6-is key teeth shape joint metal corrugated bushing connection construction process schematic representation described in the utility model；
Fig. 7-is the "T"-shaped connector schematic diagram of UHPC floorings in the utility model embodiment 2；
Fig. 8-is UHPC floorings " T " connector arrangement of reinforcement schematic diagram in the utility model embodiment 2；
Fig. 9-is the structural schematic diagram of the wavy metal casing in the utility model embodiment 2.
Figure 10-is that the structure with concrete steel-UHPC combined bridge deck (integral cast-in-situ) is not shown in the utility model embodiment 1
It is intended to；
In figure: 1-connection peg, 2-UHPC floorings, 21-first pour a section UHPC floorings, and a section UHPC bridge is poured after 22-
Panel, 23-linkage interfaces, 3-Orthotropic Steel Bridge Decks, 4-U-shaped ribs, 5-diaphragm plates, 6-key teeth click joints, 7-
Joint screw thread reinforcing bar, 71-reinforcing bar locating parts, 8-wavy metal casings, 9-UHPC grouting materials, 10-sealing-plugs, 11-outlets
Plug, 12-exhaust hoses, 13-vertical ribs, 14-Side Templates, 15-slip casting boxes.
Specific embodiment
The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.
Embodiment 1
Referring to Fig.1~5: the steel-UHPC combined bridge deck structure of the non-arrangement of reinforcement of one kind of the present embodiment, the steel-UHPC combination
Bridge deck structure is made of UHPC floorings 2, Orthotropic Steel Bridge Deck 3 and connection peg 1, and 2 main part of UHPC floorings
Steel bar stress and distributing bar is not configured；Steel bridge deck 3 is equipped with the connection peg 1 in insertion UHPC floorings 2, the connection
Peg 1 is uniformly equally spacedly distributed on steel bridge deck 3, and the spacing of adjacent peg is 15cm~55cm.
The UHPC floorings 2 are formed by section cast-in-place.
Adjacent UHPC floorings Unit 2 of 2 section cast-in-place of UHPC floorings is using the connection of key teeth click joint 6 or intensively
The plain adapter of arrangement of reinforcement.
Key teeth click joint 6 is inverted trapezoidal connector.Inverted trapezoidal connector design parameter need to generally meet b2≥10cm；1.6b2
≥b1≥1.2b2；0.8b2≥h≥0.5b2；80 ° >=β >=60 ° etc. require, and symbol indicates referring to fig. 2；By being connect to key teeth occlusion
First 6 structure improves, and improves the power that is mutually twisted between adjacent 2 key teeth click joint 6 of UHPC floorings, and then reduce
Even being eliminated UHPC floorings 2 leads to weakening effect to its joint tensile strength because of man-made fracture.
6 junction of key teeth click joint is additionally provided with wavy metal casing 8 and joint screw thread reinforcing bar 7, the connector spiral shell
One end of line reinforcing bar 7 is plugged in wavy metal casing 8, is extended down in adjacent UHPC floorings Unit 2 outside the other end.Gold
Belong to corrugated bushing 8 and joint screw thread reinforcing bar 7 significantly improves the bonding strength of 6 junction of key teeth click joint.
The diameter of the wavy metal casing 8 is 15~45mm, and the length of bellows is the diameter of joint screw thread reinforcing bar 7
5~30 times, it is preferable that 5~10 times；The joint screw thread reinforcing bar is single layer laying, a diameter of 8~16mm, joint screw thread steel
The length of muscle is 15~65 times of its diameter, and it is that it is straight that joint screw thread reinforcing steel bars exposed first pours section length of UHPC floorings 21 out
10~35 times of diameter.
The wavy metal casing 8 is the open sleeve with removable rubber sealing-plug 10, and sealing-plug 10 can be set to wedge
Shape is inserted into matching thread reinforcing bar and is positioned.It is not provided with positioning device inside wavy metal casing 8, passes through the point on spiral
Welding steel muscle locating part 71 carries out reinforcing bar limit, as shown in Figure 5.
The UHPC floorings 2 are to be poured using the UHPC for the low-shrinkage energy for being added to rice hull ash, UHPC bridge floor
Plate 2 with a thickness of 35~65mm.
Referring to Fig. 6, the construction method of the steel-UHPC combined bridge deck structure section cast-in-place of the non-arrangement of reinforcement of one kind of the present embodiment,
The following steps are included:
1) will connection peg 1 be uniformly equally spacedly welded on steel bridge deck 3, and make connection peg 1 extend upwardly to
In the UHPC floorings 2 poured；
2) it pours and first pours a section UHPC floorings 21:
The wavy metal casing 8 and template 14 for first pouring section UHPC floorings 21 are arranged on steel bridge deck 3；It pours and first pours section
UHPC floorings 21 simultaneously carry out steam curing；
Mode outside with vertical plane removes Side Template 14；
3) a section UHPC floorings 22 are poured after pouring:
It carries out dabbing processing to first pouring a section UHPC floorings 21 and pouring section linkage interface of UHPC floorings 22 23 with after and goes
Except vent plug 11 out；
UHPC grouting material 9 is poured into wavy metal casing 8: installation slip casting box 15 pours UHPC by slip casting box 15 and fills
Slurry 9 simultaneously applies pressure to slip casting in wavy metal casing 8 at top；
Be inserted into joint screw thread reinforcing bar 7: joint screw thread reinforcing bar 7 is inserted into wavy metal casing 8, and one end is from wavy metal set
Exposed in pipe 8, the exposed length of joint screw thread reinforcing bar 7 is 10~35 times of its diameter；
Section UHPC floorings 22 are poured after pouring and are conserved.
The concrete operations that wavy metal casing 8 is arranged are as follows: first built-in metal corrugated bushing 8, and it is accurately positioned processing, metal
The sealing of 8 pore one end of corrugated bushing, another end opening, and open end is outwardly, sealed end inwardly, prevents the UHPC slurry for first pouring section
Into in metal bellows；The bore of bellows is concordant with linkage interface 23, convenient for removing end template.
Using certain self-anchored suspension bridge as engineering background, the main long 300m of bridge, girder steel box-girder uses Orthotropic Steel Bridge Deck,
Material is Q345qc steel (elasticity modulus 206GPa, Poisson's ratio 0.3).Standard section high 3.5m, wide 32m, top plate thickness 14mm, bottom
Plate thickness 14mm, tabula plate thickness 12mm, tabula plate spacing are 3m.Longitudinal U rib section be 300 × 280 × 8mm, center away from for
600mm.Main travelling gantry frame road uses the light-duty combined bridge deck structure of steel-STC, and UHPC floorings elasticity modulus is 44GPa, Poisson's ratio
It is 0.2.
1 combined bridge deck form of scheme is the asphalt concrete pavement of Steel Bridge Deck+5cmSTC (the intensive reinforcing bar of UHPC+)+5cm
Layer, Steel Bridge Deck with STC layer by welding 13 × 35mm of Ф peg formed composite structure, peg normal pitch for 150mm ×
150mm.The vertical, horizontal steel mesh of arrangement Ф 10, normal pitch are 37.5mm × 37.5mm in STC layers, and net protective layer thickness is
15mm。
Scheme 2 is the steel-UHPC combined bridge deck structure for the non-arrangement of reinforcement that the utility model embodiment 1 uses, not with scheme 1
With scheme 2 eliminates intensive steel mesh, and other parts remain unchanged.
5 segments are taken to establish the stress situation that finite element model calculates steel-UHPC combined bridge deck using ABAQUS, model is total
15m ignores the bond-slip of steel plate Yu UHPC layers using linear elastic model.Using " highway bridge and culvert design general specification " JTG
I grade of carload of highway of D60-2015 carries out quiet load-bearing capacity analysis, and gross weight 550kN, wherein rear axle weighs 140kN, wheel lotus
Load is included in 0.3 times of impact coefficient.Using the bicycle fatigue load of " highway steel structure bridge design specification " JTG D64-2015
Model III carries out anti-fatigue ability analysis, gross weight 480kN, fatigue criterion axle weight 120kN.Consider various unfavorable operating conditions, UHPC
Floorings are in the calculated result column such as table 1 under the most unfavorable processing condition.
UHPC layers of top maximum principal stress calculated value (MPa) of 1 two schemes local calculation of table
According to UHPC floorings bearing capacity calculated result in table 1 it is found that the UHPC floorings wheel load of scheme 2 and scheme 1
Though stress is compared to height 16.9%, the local wheel-load stress of the maximum of scheme 2UHPC floorings is only 5.96MPa, in addition whole
Calculated result 5.1MPa, it is only 11.06MPa that floorings, which overlap stress, it is contemplated that steel facing and the common tension of UHPC, and UHPC
Static(al) cracking strength is in 30MPa or more, much higher than the calculating stress of floorings, therefore UHPC layers in non-arrangement of reinforcement without cracking
Risk.According to Fatigue stress calculation result in table 1 it is found that scheme 2 is higher than the wheel-load stress of scheme 1UHPC floorings
16.2%, but scheme 2UHPC floorings maximum stress width is only 4.04MPa, carries out the fatigue strength checking computations of UHPC floorings, it is full
The Anti fatigue Design requirement of sufficient structure.
Therefore, using the steel-UHPC combined bridge deck structure of non-arrangement of reinforcement in mechanical property, with the existing close steel-for setting arrangement of reinforcement
The mechanical property difference of UHPC combined bridge deck structure is little, is able to satisfy floorings self-bearing capacity and anti-fatigue ability completely
Demand is bridge floor board combining structure that is practical, being worth of widely use.
Embodiment 2
Referring to Fig.1 with 7~9, the steel-UHPC combined bridge deck structure of the non-arrangement of reinforcement of one kind of the present embodiment, with 1 phase of embodiment
Than there are following differences:
Key teeth click joint 6 is "T"-shaped connector, and "T"-shaped connector design parameter generally needs to meet h≥1.5×
b2；5cm≤b2Deng requirement, symbol is indicated referring to attached drawing 7；It is improved, is improved adjacent by the structure to key teeth click joint 6
It is mutually twisted power between 2 key teeth click joint 6 of UHPC floorings, and then reduces or even eliminates UHPC floorings 2 because artificially breaking
It splits and leads to the weakening effect to its joint tensile strength.
The wavy metal casing 8 is closed casing.
The vertical rib 13 limited for butt joint spiral 7, the vertical rib 13 are equipped in the wavy metal casing 8
Uniformly distributed along 8 inner wall circumferential direction of wavy metal casing, vertical rib 13 is arranged in the inside pipe wall of wavy metal casing 8, such as Fig. 9 (a) institute
Show, alternatively, vertical rib 13 is provided only on 8 inside pipe wall two-end part of wavy metal casing, as shown in Fig. 9 (b).
The construction method of the steel-UHPC combined bridge deck structure of the non-arrangement of reinforcement of one kind of the present embodiment is the same as the construction in embodiment 1
Method.
In addition, it should be noted that, steel-UHPC the combined bridge deck structure of the non-arrangement of reinforcement of one kind of the utility model, works as bridge floor
When the bearing capacity of plate and the lower performance requirement of anti-fatigue ability, if combined bridge deck structure pours UHPC using section cast-in-place
Floorings 2 only can also pour the end for UHPC floorings Unit 2 that segmentation pours to be formed in inverted trapezoidal or " T " shaped key
Tooth click joint 6 does not need to set wavy metal casing 8 and joint screw thread reinforcing bar 7 in the seam crossing of UHPC floorings Unit 2, with
The change of upper technical characteristic, those skilled in the art is understood that and is implemented by verbal description, therefore is no longer separately added as attached drawing
With explanation.
Embodiment 3
Referring to Fig.1 0: the steel-UHPC combined bridge deck structure of the non-arrangement of reinforcement of one kind of the present embodiment, the steel-UHPC composite bridge
Face structure is made of UHPC floorings 2, Orthotropic Steel Bridge Deck 3 and connection peg 1, and 2 main part of UHPC floorings is not
Configure steel bar stress and distributing bar；Steel bridge deck 3 is equipped with the connection peg 1 in insertion UHPC floorings 2, the connection
Peg 1 is uniformly equally spacedly distributed on steel bridge deck 3, and the spacing of adjacent peg is 15cm~55cm.
The UHPC floorings 2 are poured by integral cast-in-situ.
A kind of construction method of the steel-UHPC combined bridge deck structure integral cast-in-situ of non-arrangement of reinforcement, comprising the following steps:
1) steel connection peg 1 is uniformly equally spacedly welded on steel bridge deck 3, and extends upwardly to connection peg 1
In UHPC floorings 2 to be poured；
2) template 14 of UHPC floorings 2 to be poured is arranged on steel bridge deck 3；
3) UHPC floorings 2 are poured and are conserved.
Claims (8)
1. a kind of steel-UHPC combined bridge deck structure of non-arrangement of reinforcement, which is characterized in that the steel-UHPC combined bridge deck structure by
UHPC floorings, Orthotropic Steel Bridge Deck and connection peg composition, and steel bar stress is not configured in UHPC floorings main part
And distributing bar；Steel bridge deck is equipped with the connection peg in insertion UHPC floorings, and the connection peg is uniformly equally spacedly
It is distributed on steel bridge deck, the spacing of adjacent peg is 15cm ~ 55cm.
2. steel-UHPC the combined bridge deck structure of non-arrangement of reinforcement as described in claim 1, which is characterized in that the UHPC floorings are logical
It crosses integral cast-in-situ or section cast-in-place forms.
3. steel-UHPC the combined bridge deck structure of non-arrangement of reinforcement as claimed in claim 2, which is characterized in that the segmentation of UHPC floorings is existing
The adjacent UHPC bridge floor plate unit poured is connected using key teeth click joint or the plain adapter of intensive arrangement of reinforcement.
4. steel-UHPC the combined bridge deck structure of non-arrangement of reinforcement as claimed in claim 3, which is characterized in that key teeth click joint is to fall
Trapezoidal connector or "T"-shaped connector.
5. steel-UHPC the combined bridge deck structure of non-arrangement of reinforcement as described in claim 3 or 4, which is characterized in that the key teeth occlusion connects
Head junction is additionally provided with wavy metal casing and joint screw thread reinforcing bar, and one end of the joint screw thread reinforcing bar is plugged in wavy metal
In casing, it is extended down in adjacent UHPC bridge floor plate unit outside the other end.
6. steel-UHPC the combined bridge deck structure of non-arrangement of reinforcement as claimed in claim 5, which is characterized in that the wavy metal casing
Diameter be 15 ~ 45mm, the length of bellows is 5 ~ 30 times of the diameter of joint screw thread reinforcing bar；The joint screw thread reinforcing bar is single
Layer is laid with, a diameter of 8 ~ 16mm, and the length of joint screw thread reinforcing bar is 15 ~ 65 times of its diameter, and joint screw thread reinforcing steel bars exposed
10 ~ 35 times that section length of UHPC floorings is its diameter are first poured out.
7. steel-UHPC the combined bridge deck structure of non-arrangement of reinforcement as claimed in claim 5, which is characterized in that the wavy metal casing
Open sleeve for closed casing or with removable rubber sealing-plug, the sealing-plug wedgewise, to cooperate joint screw thread reinforcing bar
Insertion positioning；Alternatively, being equipped with the vertical rib for the limit of butt joint spiral, the vertical rib in the wavy metal casing
It is uniformly distributed along wavy metal internal surface of sleeve pipe circumferential direction.
8. steel-UHPC the combined bridge deck structure of non-arrangement of reinforcement as claimed in claim 1 or 2, which is characterized in that the UHPC floorings
For low-shrinkage can UHPC pour, UHPC floorings with a thickness of 35 ~ 65mm.
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|---|---|---|---|
| CN201821815173.9U CN209292891U (en) | 2018-11-06 | 2018-11-06 | A kind of steel-UHPC combined bridge deck structure of non-arrangement of reinforcement |
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| CN201821815173.9U CN209292891U (en) | 2018-11-06 | 2018-11-06 | A kind of steel-UHPC combined bridge deck structure of non-arrangement of reinforcement |
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| CN109208474A (en) * | 2018-11-06 | 2019-01-15 | 长沙理工大学 | A kind of steel-UHPC the combined bridge deck structure and construction method of non-arrangement of reinforcement |
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| CN109208474A (en) * | 2018-11-06 | 2019-01-15 | 长沙理工大学 | A kind of steel-UHPC the combined bridge deck structure and construction method of non-arrangement of reinforcement |
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