CN106337361A - Separated fiber reinforced plastic (FRP)-concrete-steel composite girder bridge structure and construction method thereof - Google Patents
Separated fiber reinforced plastic (FRP)-concrete-steel composite girder bridge structure and construction method thereof Download PDFInfo
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- CN106337361A CN106337361A CN201610785473.6A CN201610785473A CN106337361A CN 106337361 A CN106337361 A CN 106337361A CN 201610785473 A CN201610785473 A CN 201610785473A CN 106337361 A CN106337361 A CN 106337361A
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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
- E01D1/00—Bridges in general
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
- E01D2101/285—Composite prestressed concrete-metal
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/40—Plastics
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a separated fiber reinforced plastic (FRP)-concrete-steel composite girder bridge structure and a construction method thereof. The structure comprises a steel girder, FRP boards provided with T ribs, and a reinforced concrete bridge deck, wherein the FRP boards are used as bottom plates of concrete at the rest of positions except the top surface of the steel girder, and are taken as templates used during pouring. The method comprises the steps of firstly, manufacturing and cutting standard FRP templates according to the line type of the transverse bridge direction of the bridge deck and the longitudinal length of a bridge, assembling a plurality of groups of separated FRP modules according to the line type of a cross section along the transverse bridge direction, then piecewise hoisting the separated FRP modules onto the steel girder to complete the assembly of the FRP templates of the whole bridge, and finally, pouring to form the concrete bridge deck. The composite girder bridge structure and the construction method thereof are suitable for a bridge deck form with any line type along the transverse bridge direction, and avoids the complicated connection treatment of three materials, i.e., FRP, concrete and steel at the same position, so that the construction difficulty of the FRP-concrete-steel composite girder bridge is reduced, and the bearing capacity and durability of the concrete bridge decks of the class of bridges are remarkably improved.
Description
Technical field
Patent of the present invention is related to technical field of civil engineering, more particularly, to a kind of separate type frp- concrete-steel combination beam
Bridge construction form and its construction method.
Background technology
Reinforced concrete bridge deck plate applies in bridge structure in a large number, with the increasingly increase of vehicle flowrate, its steel bar corrosion,
Fatigue, more and more significant the problems such as concrete cracking.Frp- concrete slab is a kind of new floorings form, its base plate
For frp structure, upper strata is concrete.Because frp material has high-strength light, corrosion resistant feature, the resistance to of floorings can be improved
Long property, simultaneously frp base plate can also can participate in base plate in Cheng Qiaohou lateral stressed as the template during concreting of upper strata.Mirror
In above-mentioned advantage, this new floorings cause the research of numerous scholars, and start to be applied in actual science of bridge building.
But, because frp section bar is generally pultrusion, in order to keep the continuity of frp structure, using Standard Module system
The frp template made is generally linear pattern.Therefore, existing frp- concrete slab the uniform of height such as all adopts along direction across bridge
Section.And in fact, concrete slab is often transversely non-rectilinear line style, the more horizontal span centre of floorings height on girder steel top
At section and cantilever end height big, that is, there is the gradient and turnover in direction across bridge line style.For such floorings, directly adopt pultrusion
The frp template of shaping will be extremely difficult.On the other hand, the interface mechanical characteristic between different materials is complex, concrete with
Interface between frp material connects the difficult point being always concrete-frp combining structure.Frp- concrete-steel combination beam bridge then relates to
And the connectivity problem of three kinds of materials, its version, the research of construction technology and application are not yet ripe.
Content of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provide a kind of separate type frp- concrete-
Steel combination beam bridge construction and construction method, carry out modular construction by rational cutting, assembled program, improve floorings horizontal
Line style and the flexibility of arrangement form, avoid interface while frp, concrete, three kinds of materials of steel to connect simultaneously, reduce frp- and mix
The difficulty of construction of solidifying soil-steel combination beam bridge.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of separate type frp- concrete-steel combination beam bridge construction, including left side cantilever slab frp modular unit (4), box beam
Top frp modular unit (5), right side cantilever slab frp modular unit (6), reinforced concrete bridge deck plate (9) and girder steel (10), institute
State left side cantilever slab frp modular unit (4), box beam top frp modular unit (5), right side cantilever slab frp modular unit (6) from a left side
It is set in turn on girder steel (10) to the right side, described left side cantilever slab frp modular unit (4), box beam top frp modular unit (5), the right side
Side cantilever slab frp modular unit (6) is formed by the frp template assembly with t rib, and described box beam top frp modular unit (5) by
Three sections of linear pattern frp templates are assembled according to the gradient and line style in direction across bridge.And the setting of described reinforced concrete bridge deck plate (9)
In left side cantilever slab frp modular unit (4), box beam top frp modular unit (5), right side cantilever slab frp modular unit (6) and
On the surface that girder steel (10) is formed, and described reinforced concrete bridge deck plate (9) bottom transverse steel is supported on the t of frp template
On rib, bottom longitudinal reinforcement and prestressed strand pass through from frp template.
Further: described girder steel (10) is vertically arranged with the girder steel diaphragm (11) of more than two, described frp template
It is arranged at the outside side of girder steel diaphragm (11) between two girder steel diaphragms (11) and on side and then form case
Back frp modular unit (5).
Further: described frp template is equipped with preformed hole in longitudinal reinforcement and prestressed strand respectively by position, described
Reinforced concrete bridge deck plate (9) bottom longitudinal reinforcement and prestressed strand pass through from its corresponding preformed hole respectively.
Preferred: described frp template surface is through polishing and scab interface processing.
Preferred: described frp template includes base plate (3), two shape of falling l webs (1) and t rib (2), two shape of falling l abdomens
Plate (1) is respectively symmetrically the both sides being arranged at base plate (3), and the cross rib (12) of the shape of falling l web (1) is oppositely arranged.Described t rib (2)
It is arranged on base plate (3), and be located between two shape of falling l webs (1).
Preferred: described girder steel (10) is grooved steel box-girder, mainly by left roof, right top board, left web, right web, bottom
Plate one and ribbed stiffener composition, wherein, left web, right web are separately positioned on the left and right sides of base plate one, and described left roof, the right side
Top board is respectively provided with its corresponding left web, on right web, and described left roof, right top board and base plate one be arranged in parallel.Described
Ribbed stiffener is arranged on left web, right web and base plate one.Described left side cantilever slab frp modular unit (4) is arranged at left top
The left side of plate, described right side cantilever slab frp modular unit (6) is arranged at the right of right top board, and described box beam top frp template list
First (5) one end is connected with the right of left roof, and the other end is connected with the left side of right top board.
A kind of construction method of separate type frp- concrete-steel combination beam bridge construction, comprises the following steps:
Step 1, by the frp template with t rib according to bridge direction across bridge and vertical bridge to line style and length made and cut
Cut, punched by position in longitudinal reinforcement and prestressed strand.
Step 2, each section of grfp grooved template carries out polishing and scab interface processing.
Step 3, sets up frp mould platform for lining, and each section of frp template is assembled according to floorings cross dip and position,
And more than one group of integral mold plate is connected into by steel plate of shaping.
Step 4, gluing outside the shape of falling l web (1), the integral mold plate assembling in step 3 is indulged bridge to viscous along bridge
Knot is spliced into detached module one by one, and applies pressure outside the shape of falling l web (1) with secure bond.
Step 5, prefabricated girder steel (10) is lifted on Temporary Piers or bridge pier paragraph by paragraph, and is welded in the position of regulation
Overall.
Step 6, is provided for positioning fixing left side cantilever slab frp along bridge is longitudinally elongated in girder steel (10) top flange both sides
The positioning of modular unit (4), box beam top frp modular unit (5) and right side cantilever slab frp modular unit (6) fixes angle steel three
(83) the temporary support steel pipe three (73) for supporting box beam top frp modular unit (5), is then installed inside girder steel (10).
It is respectively provided with temporary support steel pipe one (71), temporary support steel pipe two (72) in the left and right sides of girder steel (10).Described interim
It is provided with support steel pipe one (71) and fix angle steel one (81) for the positioning positioning fixing left side cantilever slab frp modular unit (4),
It is provided with temporary support steel pipe two (72) and fix angle steel for the positioning positioning fixing right side cantilever slab frp modular unit (6)
Two (82).Box beam top frp modular unit (5) arranges the strong point along at 2 three branches of direction across bridge simultaneously, and left side cantilever slab frp
Direction across bridge arranges 2 temporary support points respectively for modular unit (4), right side cantilever slab frp modular unit (6).
Step 7, good frp module packet assembled in step 4 is lifted on girder steel (10), along direction across bridge in place after
Outside the two ends shape of falling l web (1) of frp module viscose glue carry out longitudinal spliced.
Step 8, lashing bridge slab reinforcement net pouring reinforcement concrete floorings (9), treat that regulation is arrived in concrete curing strong
Degree post-stress bundle.
In described step 1 during the cutting of frp template, in direction across bridge, frp template changes according to the cross fall of floorings base plate
Cut, each section is straightway.
In described step 2, grfp grooved template is polished and scab interface processing method: the base plate to frp template
(3) being polished in inner side and the outside of the shape of falling l web (1), carries out gluing and spreading sand and broken after the polishing of the inner side of base plate (3)
Stone.
In described step 3, using steel, wooden component processing frp mould platform for lining, the top flange of girder steel (10) is not laid
Frp template, the frp template at other positions of girder steel presses assembled formation left side cantilever slab frp modular unit (4) of line style, case respectively
Back frp modular unit (5), right side cantilever slab frp modular unit (6).
In described step 8, bottom longitudinal reinforcement and prestressed strand pass through from frp preformed hole, and bottom transverse steel supports
On the t rib of frp template.In steel beam position, concrete directly pours the edge of a wing thereon, in girder steel both sides, concreting in
In frp template.
Beneficial effect: the present invention compared to existing technology, has the advantages that
(1) simply it is easy to process, the t rib of base plate can improve the overall firm of template to frp formwork structure proposed by the present invention
Degree, deformation during reduction concreting, and the supporting construction of transverse steel can be also served as, it is easy to laying, the positioning of transverse steel
And colligation, the ability that is engaged between frp base plate and concrete can also be strengthened simultaneously, reduce the risk peeled off between the two.
(2) compared with traditional steel-concrete composite beam bridge, the bed die material of concrete slab and making are completely by group
The frp groove type plate spelled substitutes, and the permanent protection as concrete slab, can provide drag simultaneously and replace part cross-bridges
To tension reinforcement, durability and the anti-bending bearing capacity of concrete slab are greatly improved.
(3) present invention can cut to the linear pattern frp template that standard pultrusion is molded according to deck structrue form, presses
Carry out assembly according to horizontal floorings line style and the gradient it is adaptable to the floorings of any line style, improve frp- concrete slab
Application.
(4) across footpath and the weight of single frp template because frp template is after being horizontally divided into some sections, are reduced, can root
Require according to crane capacity and Deformation control, multiple frp templates are assembled into one group of group along longitudinal gluing in advance by smooth location
Module, then press group modularization lifting, not only can guarantee that construction quality and can reduce again and lift number of times, be greatly improved construct fast
Degree.
(5) present invention adopt frp template version detached with girder steel, can avoid girder steel ceiling location steel, frp and
The challenge that three kinds of materials of concrete are simultaneously connected with, by the assembled combination of cutting, frp template is provided only on girder steel two
Side, and the concrete of girder steel ceiling location directly pours in girder steel top flange, frp template need not be entirely through girder steel, it is to avoid
The base plate drilling of frp template, a series of problems, such as wear peg and be connected with girder steel, greatly reduce difficulty of construction, simplify construction
Technique.
In sum, the present invention is applied to the bridge floor form of any line style of direction across bridge, and avoids frp, concrete and steel
Three kinds of materials are processed in the complicated connection of same position, reduce the difficulty of construction of frp- concrete-steel combination beam bridge, can be notable
Improve bearing capacity and the durability of such bridge concrete floorings.
Brief description
Fig. 1 is the cross-sectional view of the frp template of band t rib of the present invention.
Fig. 2 is frp- concrete-steel combination beam bridge cross-sectional view.
Fig. 3 is the frp template assembly plan of the present embodiment Bridge end bay.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with the present invention it should be understood that these examples are merely to illustrate this
Invention rather than restriction the scope of the present invention, after having read the present invention, those skilled in the art are various to the present invention
The modification of the equivalent form of value all falls within the application claims limited range.
A kind of separate type frp- concrete-steel combination beam bridge construction, section form is as shown in Fig. 2 its span setting is 25m
+ 35m+25m, including left side cantilever slab frp modular unit 4, box beam top frp modular unit 5, right side cantilever slab frp modular unit
6th, reinforced concrete bridge deck plate 9 and girder steel 10, described left side cantilever slab frp modular unit 4, box beam top frp modular unit 5,
Right side cantilever slab frp modular unit 6 is from left to right set in turn on girder steel 10, described left side cantilever slab frp modular unit 4,
Box beam top frp modular unit 5, right side cantilever slab frp modular unit 6 are formed by the frp template assembly with t rib, and described case
Back frp modular unit 5 is assembled according to the gradient and line style in direction across bridge by three sections of linear pattern frp templates.And described reinforcing bar
Concrete slab 9 is arranged at left side cantilever slab frp modular unit 4, box beam top frp modular unit 5, right side cantilever slab frp mould
On the surface that Slab element 6 and girder steel 10 are formed, and described reinforced concrete bridge deck plate 9 bottom transverse steel is supported on frp
On the t rib of template, bottom longitudinal reinforcement and prestressed strand pass through from frp template.
Frp template is used for the base plate of the concrete of remaining position and template when pouring, frp- coagulation in addition to girder steel top surface
Native floorings are located on girder steel.Frp template includes 3, two shape of falling l webs 1 of base plate and t rib 2,1 point of two shape of falling l webs
It is not symmetricly set in the both sides of base plate 3, and the cross rib 12 of the shape of falling l web 1 is oppositely arranged.Described t rib 2 is arranged on base plate 3, and
Between two shape of falling l webs 1.Baseplate width and the shape of falling l web height require really according to the stiffness reliability in work progress
Fixed.
Frp template is divided into standard frp template and non-standard frp template, and in standard frp template, the shape of falling l web height is
100m, thickness is 4mm.Top flange width is 50mm, and thickness is 6mm.It is 43mm that t rib top flange is lifted off plate inner surface height,
Top flange width is 30mm, and the thickness of top flange and perpendicular floor is 6mm.The width of base plate is 449mm, and thickness is 6mm.And it is nonstandard
Quasi- frp template is various sizes of frp template, is formed by standard frp template is carried out with cutting.Wherein, left side cantilever slab frp
Directly cutting forms by standard frp template for modular unit 4, right side cantilever slab frp modular unit 6.
As shown in figure 3, described girder steel 10 is vertically arranged with the girder steel diaphragm 11 of more than two, described frp template sets
It is placed in the outside side of girder steel diaphragm 11 between two girder steel diaphragms 11 and on side and then form box beam top frp
Modular unit 5.Frp modular unit 5 is made up of standard frp template and non-standard frp template.
Described frp template is equipped with preformed hole in longitudinal reinforcement and prestressed strand respectively by position, described reinforced concrete
Native floorings 9 bottom longitudinal reinforcement and prestressed strand pass through from its corresponding preformed hole respectively.
Described frp template surface is through polishing and scab interface processing.
As shown in Fig. 2 described girder steel 10 be grooved steel box-girder, mainly by left roof 101, right top board 102, left web 103,
Right web 104, base plate 1 and ribbed stiffener 106 form, and wherein, left web 103, right web 104 are separately positioned on base plate one
105 left and right sides, and described left roof 101, right top board 102 be respectively provided with its corresponding left web 103, on right web 104,
And described left roof 101, right top board 102 are be arranged in parallel with base plate 1.Described ribbed stiffener 106 is arranged at left web 103, the right side
On web 104 and base plate 1.Described left side cantilever slab frp modular unit 4 is arranged at the left side of left roof 101, described
Right side cantilever slab frp modular unit 6 is arranged at the right of right top board 102, and described box beam top frp modular unit 5 one end and a left side
The right of top board 101 connects, and the other end is connected with the left side of right top board 102.Wherein, left roof 101, right top board 102 width are equal
It is 32mm for 800mm, thickness.Left web 103, right web 104 height are 1088mm, and thickness is 25mm.Base plate 1
Width and thickness are respectively 4560mm and 25mm.
Reinforced concrete bridge deck plate 9 is 8500mm along direction across bridge width, and horizontal wall inscription is 2%.Reinforced concrete bridge deck plate 9 is outstanding
Height at arm end is 200mm, is 400mm in girder steel top position height, is 300mm in box beam inner height.
As shown in Fig. 22 interim arranged by direction across bridge between girder steel 10 and left side cantilever slab frp modular unit 4
Support steel pipe 1 is supported, and described temporary support steel pipe 1 is fixed by positioning with left side cantilever slab frp modular unit 4
Angle steel 1 is fixed.Between girder steel 10 and right side cantilever slab frp modular unit 6,2 by being arranged by direction across bridge are faced
When supporting steel pipe 2 72 be supported, and described temporary support steel pipe 2 72 passes through positioning with right side cantilever slab frp modular unit 6
Fixing angle steel 2 82 is fixed.And box beam top frp modular unit 5 arranges the strong point along at 2 three branches of direction across bridge, and pass through
Temporary support steel pipe 3 73 is supported on girder steel 10.Temporary support steel pipe 1, temporary support steel pipe 2 72, temporary support steel pipe
3 73 a diameter of 45mm, thickness of steel pipe 3.5mm.And, described left side cantilever slab frp modular unit 4 is by being arranged at left roof
The fixing angle steel 3 83 of positioning on 101 left side is fixed on the positioning, and described right side cantilever slab frp modular unit 6 passes through setting
The fixing angle steel 3 83 of positioning on the right of right top board 102 is fixed on the positioning, and described box beam top frp modular unit 5 one
End is fixed on the positioning with the fixing angle steel 3 83 of positioning on the right of left roof 101, on the left side of the other end and right top board 102
The fixing angle steel 3 83 of positioning be fixed on the positioning.
The fixing angle steel 1 of positioning, the long 56mm of leg of angle, the thickness 5mm of the fixing angle steel 2 82 of positioning, the fixing angle steel of positioning
The 3 83 long 20mm of leg of angle, thickness 3mm.
A kind of construction method of separate type frp- concrete-steel combination beam bridge construction, specifically includes following steps:
Step 1, by the frp template with t rib according to bridge direction across bridge and vertical bridge to line style and length made and cut
Cut, punched by position in longitudinal reinforcement and prestressed strand.During cutting, in direction across bridge, frp template is according to floorings base plate
Cross fall change is cut, and each section is straightway.Put down with the frp template assembly in the range of end bay 25m across footpath in Fig. 3
As a example the figure of face, in direction across bridge, left side cantilever slab frp modular unit 4, right side cantilever slab frp modular unit 6 are and adopt master die
The frp template of number, box beam top frp modular unit 5 is made up of the frp template of standard module and the frp template of non-standard modulus.
Step 2, each section of grfp grooved template carries out polishing and scab interface processing.
Rp template needs the interface of gluing to include the plate upper surface of groove type plate and the lateral surface of two webs.Therefore need
Is polished in the outside of the inner side of the base plate 3 of frp template and the shape of falling l web 1, after the inner side polishing of base plate 3, to carry out gluing
And spreading sand and rubble.Wherein, needing to be polished fluffing, after gluing, the frp template that contacted with concrete in interface before gluing
Upper surface need uniform spreading sand and rubble, to strengthen the bonding of frp plate and concrete.The particle diameter of sand and rubble need to meet bonding
Require.
Step 3, sets up frp mould platform for lining and carries out horizontal assembly, by each section of frp template according to floorings cross dip
With position assembling, and more than one group of integral mold plate is connected into by sizing steel plate, smooth to ensure frp contacts baseplate position,
Meet the size required for bridge and angle.
Using steel, wooden component processing frp mould platform for lining, frp template is not laid in the top flange of girder steel 10, girder steel its
The frp template at his position presses line style assembled formation left side cantilever slab frp modular unit 4, box beam top frp modular unit 5, the right side respectively
Side cantilever slab frp modular unit 6.
Step 4, is longitudinally assembled into separable module.Required and longitudinal across footpath distribution according to Lifting Capacity, Deformation control,
Gluing outside the shape of falling l web 1, the integral mold plate assembling is indulged bridge and is spliced into bonding along bridge divide one by one in step 3
From module, and apply pressure with secure bond in the shape of falling l web 1 outside, wherein, visual Lifting Capacity, can be by multigroup template
Hang along the separable module being longitudinally bonded to 3～5m length is standby.
Step 5, sets up girder steel, according to crane capacity, the good girder steel of prefabrication 10 is lifted into Temporary Piers or bridge paragraph by paragraph
On pier, and weld integral continuous structure in the position of regulation.
Step 6, is provided for positioning cantilever slab frp mould on the left of fixing along bridge is longitudinally elongated in girder steel 10 top flange both sides
The positioning of Slab element 4, box beam top frp modular unit 5 and right side cantilever slab frp modular unit 6 fixes angle steel 3 83, Ran Hou
Temporary support steel pipe 3 73 for supporting box beam top frp modular unit 5 is installed inside girder steel 10.The left and right sides in girder steel 10
It is respectively provided with temporary support steel pipe 1, temporary support steel pipe 2 72.It is provided with described temporary support steel pipe 1 for fixed
The positioning of the fixing left side in position cantilever slab frp modular unit 4 fixes angle steel 1, temporary support steel pipe 2 72 is provided with for fixed
The positioning of the fixing right side in position cantilever slab frp modular unit 6 fixes angle steel 2 82.Frp modular unit 5 in box beam top is along direction across bridge simultaneously
At 2 three branches, the strong point is set, and left side cantilever slab frp modular unit 4, right side cantilever slab frp modular unit 6 cross-bridges respectively
To 2 temporary support points of setting.As shown in Fig. 2 along bridge, longitudinally elongated setting positioning fixes angle steel 3 83, then installs interim
Supporting steel pipe 3 73, in the fixing angle steel 1 of girder steel 10 top flange both sides setting positioning, the fixing angle steel 2 82 of positioning, and along bridge
The longitudinally, laterally temporary support steel pipe 1 of setting frp template, temporary support steel pipe 2 72.For floorings wing plate, direction across bridge
2 temporary support points of setting.For the top surface frp template in chamber, need to be in 2 three branch settings along direction across bridge in chamber
Support point.
Step 7, good frp module packet assembled in step 4 is lifted on girder steel 10, along direction across bridge in place after in frp
The two ends shape of the falling l web 1 outside viscose glue of module carries out longitudinal spliced.Guarantee that frp plate base plate is concordant in splicing, preformed hole
Alignment.
Step 8, lashing bridge slab reinforcement net pouring reinforcement concrete floorings 9, treat that prescribed strength is arrived in concrete curing
Post-stress bundle, completes Surfacing Construction.
Bottom longitudinal reinforcement and prestressed strand pass through from frp preformed hole, and bottom transverse steel is supported on the t of frp template
On rib.In steel beam position, concrete directly pours the edge of a wing thereon, and in girder steel both sides, concreting is in frp template.?
Before glue solidifies completely, forbidden moves template, and carry out waterproof isocolloid maintenance work.
The above be only the preferred embodiment of the present invention it should be pointed out that: for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of separate type frp- concrete-steel combination beam bridge construction it is characterised in that: include left side cantilever slab frp template list
First (4), box beam top frp modular unit (5), right side cantilever slab frp modular unit (6), reinforced concrete bridge deck plate (9) and steel
Beam (10), described left side cantilever slab frp modular unit (4), box beam top frp modular unit (5), right side cantilever slab frp template list
First (6) are from left to right set in turn on girder steel (10), described left side cantilever slab frp modular unit (4), box beam top frp template
Unit (5), right side cantilever slab frp modular unit (6) are formed by the frp template assembly with t rib, and described box beam top frp mould
Slab element (5) is assembled according to the gradient and line style in direction across bridge by three sections of linear pattern frp templates；And described reinforced concrete bridge
Panel (9) is arranged at left side cantilever slab frp modular unit (4), box beam top frp modular unit (5), right side cantilever slab frp template
On the surface that unit (6) and girder steel (10) are formed, and described reinforced concrete bridge deck plate (9) bottom transverse steel is supported on
On the t rib of frp template, bottom longitudinal reinforcement and prestressed strand pass through from frp template.
2. separate type frp- concrete-steel combination beam bridge construction according to claim 1 it is characterised in that: described girder steel
(10) it is vertically arranged with the girder steel diaphragm (11) of more than two, described frp template-setup is in two girder steel diaphragms (11)
Between and the outside side of girder steel diaphragm (11) on side so that formed box beam top frp modular unit (5).
3. separate type frp- concrete-steel combination beam bridge construction according to claim 1 it is characterised in that: described frp mould
Plate is equipped with preformed hole in longitudinal reinforcement and prestressed strand respectively by position, and described reinforced concrete bridge deck plate (9) bottom is indulged
Pass through from its corresponding preformed hole respectively to reinforcing bar and prestressed strand.
4. separate type frp- concrete-steel combination beam bridge construction according to claim 1 it is characterised in that: described frp mould
Plate surface is through polishing and scab interface processing.
5. separate type frp- concrete-steel combination beam bridge construction according to claim 1 it is characterised in that: described frp mould
Plate includes base plate (3), two shape of falling l webs (1) and t rib (2), and two shape of falling l webs (1) are respectively symmetrically and are arranged at base plate
(3) both sides, and the cross rib (12) of the shape of falling l web (1) is oppositely arranged；Described t rib (2) is arranged on base plate (3), and is located at two
Between the individual shape of falling l web (1).
6. separate type frp- concrete-steel combination beam bridge construction according to claim 1 it is characterised in that: described girder steel
(10) it is grooved steel box-girder, be mainly made up of left roof, right top board, left web, right web, base plate one and ribbed stiffener, wherein, left
Web, right web are separately positioned on the left and right sides of base plate one, and described left roof, right top board are respectively provided with its corresponding left abdomen
On plate, right web, and described left roof, right top board and base plate one be arranged in parallel；Described ribbed stiffener is arranged at left web, right web
And on base plate one；Described left side cantilever slab frp modular unit (4) is arranged at the left side of left roof, described right side cantilever slab frp
Modular unit (6) is arranged at the right of right top board, and described box beam top frp modular unit (5) one end is connected with the right of left roof
Connect, the other end is connected with the left side of right top board.
7. a kind of construction party based on the arbitrary described separate type frp- concrete-steel combination beam bridge construction of claim 1 to 6
Method is it is characterised in that comprise the following steps:
Step 1, by the frp template with t rib according to bridge direction across bridge and vertical bridge to line style and length made and cut,
Longitudinal reinforcement and prestressed strand are punched by position；
Step 2, each section of grfp grooved template carries out polishing and scab interface processing；
Step 3, sets up frp mould platform for lining, each section of frp template is assembled according to floorings cross dip and position, and leads to
Cross the integral mold plate that sizing steel plate connects into more than a group；
Step 4, gluing outside the shape of falling l web (1), the integral mold plate assembling in step 3 is indulged bridge along bridge and spells to bonding
It is connected into detached module one by one, and apply pressure outside the shape of falling l web (1) with secure bond；
Step 5, prefabricated girder steel (10) is lifted on Temporary Piers or bridge pier paragraph by paragraph, and is welded into whole in the position of regulation
Body；
Step 6, is provided for positioning fixing left side cantilever slab frp template along bridge is longitudinally elongated in girder steel (10) top flange both sides
The positioning of unit (4), box beam top frp modular unit (5) and right side cantilever slab frp modular unit (6) fixes angle steel three (83),
Temporary support steel pipe three (73) for supporting box beam top frp modular unit (5) is then installed inside girder steel (10)；In girder steel
(10) the left and right sides is respectively provided with temporary support steel pipe one (71), temporary support steel pipe two (72)；Described temporary support steel pipe
It is provided with one (71) and fix angle steel one (81) for the positioning positioning fixing left side cantilever slab frp modular unit (4), interim
It is provided with support steel pipe two (72) and fix angle steel two (82) for the positioning positioning fixing right side cantilever slab frp modular unit (6)；
Box beam top frp modular unit (5) arranges the strong point along at 2 three branches of direction across bridge simultaneously, and left side cantilever slab frp modular unit
(4), direction across bridge arranges 2 temporary support points to right side cantilever slab frp modular unit (6) respectively；
Step 7, good frp module packet assembled in step 4 is lifted on girder steel (10), along direction across bridge in place after in frp mould
Outside the two ends shape of falling l web (1) of block viscose glue carry out longitudinal spliced；
Step 8, lashing bridge slab reinforcement net pouring reinforcement concrete floorings (9), after concrete curing to prescribed strength
Stretch-draw prestressing force bundle.
8. the construction method of separate type frp- concrete-steel combination beam bridge construction according to claim 7, its feature exists
In:
In described step 1 during the cutting of frp template, in direction across bridge, frp template is carried out according to the cross fall change of floorings base plate
Cutting, each section is straightway；
In described step 2, grfp grooved template is polished and scab interface processing method: the base plate (3) to frp template
Inner side and the outside of the shape of falling l web (1) polished, carry out gluing spreading sand and rubble after the inner side polishing of base plate (3).
9. the construction method of separate type frp- concrete-steel combination beam bridge construction according to claim 7, its feature exists
In: in described step 3, using steel, wooden component processing frp mould platform for lining, frp mould is not laid in the top flange of girder steel (10)
Plate, the frp template at other positions of girder steel presses assembled formation left side cantilever slab frp modular unit (4) of line style, box beam top respectively
Frp modular unit (5) and right side cantilever slab frp modular unit (6).
10. the construction method of separate type frp- concrete-steel combination beam bridge construction according to claim 7, its feature exists
In: in described step 8, bottom longitudinal reinforcement and prestressed strand pass through from frp preformed hole, and bottom transverse steel is supported on frp
On the t rib of template；In steel beam position, concrete directly pours the edge of a wing thereon, and in girder steel both sides, concreting is in frp mould
On plate.
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| CN110983987A (en) * | 2019-12-24 | 2020-04-10 | 德州市公路工程总公司 | Construction method of steel-concrete combined beam |
| CN112832137A (en) * | 2021-01-07 | 2021-05-25 | 安徽省公路桥梁工程有限公司 | Steel box-concrete combined beam bridge deck formwork system and construction method |
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