CN110409279A - Strong bridge structure and construction method - Google Patents
Strong bridge structure and construction method Download PDFInfo
- Publication number
- CN110409279A CN110409279A CN201910593667.XA CN201910593667A CN110409279A CN 110409279 A CN110409279 A CN 110409279A CN 201910593667 A CN201910593667 A CN 201910593667A CN 110409279 A CN110409279 A CN 110409279A
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- concrete
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- bridge
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- girder steel
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- 238000010276 construction Methods 0.000 title claims abstract description 64
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 169
- 239000010959 steel Substances 0.000 claims abstract description 169
- 239000004567 concrete Substances 0.000 claims abstract description 162
- 238000007665 sagging Methods 0.000 claims abstract description 25
- 230000009471 action Effects 0.000 claims abstract description 18
- 238000005336 cracking Methods 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 16
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000009415 formwork Methods 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000007774 longterm Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 239000003351 stiffener Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses a kind of strong bridge structure and construction methods, wherein, strong bridge structure includes bridge pier, girder steel and concrete slab, and for bridge pier for vertical prestressing bridge pier and including concrete pier main body and steel bushing, steel bushing is set in the top of concrete pier main body；Girder steel includes top plate and bottom plate and the web that is connected between top plate and bottom plate, the bottom plate of girder steel is fixed on the top of bridge pier and is welded to connect with the top of steel bushing, it is disposed with the multiple first common pegs on the top plate in the sagging moment area of girder steel, multiple resistance to pluckings not shear stud is disposed on the top plate of the hogging moment area of girder steel；Concrete slab, which pours, to be fixed on top plate, and shear stud is not embedded in concrete slab for the common peg of first on top plate and resistance to plucking, forms compound action with concrete slab.The rigid frame bridge is big without problem of Cracking, light weight, the rigidity of structure and large carrying capacity, span ability, and short construction period, and difficulty of construction is low.
Description
Technical field
The present invention relates to technical field of structural engineering, in particular to a kind of strong bridge structure and construction method.
Background technique
As shown in Figure 1, being made of basis 100, bridge pier 200 and girder 300, rigid frame bridge for typical strong bridge structure system
Maximum feature is that girder 300 is connected in the form of affixed node (as shown in figure 1 at I) with bridge pier 200, therefore, bridge pier
200 participate in the stress of girder 300, resist all kinds of loads that girder 300 is born, and this have the advantage that bridge pier 200 is joined
Additional rigidity can be provided for girder 300 with the stress of girder 300, share the internal force of girder 300, therefore rigid frame bridge is compared to biography
Pure girder structure of uniting has bigger span ability.Compared to other beam bridges, the mechanical property of rigid frame bridge bridge pier 200 is more bright
The mechanical behavior of girder 300 and the service performance of bridge structure entirety are affected aobviously.
As shown in Fig. 2, being the rigid frame bridge internal force diagram under typical condition again, it can be seen that due to the bridge pier 200 of rigid frame bridge
The stress of girder 300 is participated in, therefore in the engaging portion of the bound fraction of bridge pier 200 and girder 300, bridge pier 200 and basis 100
Point, bridge pier 200 subjects biggish moment of flexure, if unreasonable structural design, may cause 200 upper and lower ends moment of flexure of bridge pier it is excessive and
Cause bridge pier concrete cracking, especially pier beam area of joinder, in traditional design, especially in low pier strong bridge structure
In system, it is easy to crack.In addition to the problem of Cracking of the engaging portion Dun Liang and base position, existing for the pier top of rigid frame bridge
Very big hogging moment, traditional rigid frame bridge are typically all to use concrete structure, in order to prevent the cracking of concrete structure, rigid structure
The positive hogging moment area of bridge, especially hogging moment area are configured with a large amount of deformed bar, and project amount is very big, influence construction period, increase
Add construction cost.
Further, since traditional rigid frame bridge is typically all that the additional presstressed reinforcing steel of whole concrete structural system used controls pontic
Crack, concrete material creeping under action of long-term load and shrinks and the relaxation of presstressed reinforcing steel, these factors are likely to
Lead to bridge beam body long-term deflection and cracking, influences the durability of structure, and later maintenance maintenance is very difficult.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, first aspect present invention
One purpose is to propose a kind of strong bridge structure, the bridge pier pier bottom position of rigid frame bridge, the binding site of bridge pier and girder steel and negative
The concrete slab in moment of flexure area is without problem of Cracking, light weight, the rigidity of structure and the large carrying capacity of rigid frame bridge, span ability
Greatly, and short construction period, difficulty of construction are low.
The strong bridge structure of embodiment according to a first aspect of the present invention, comprising:
Bridge pier, the bridge pier is for vertical prestressing bridge pier and including concrete pier main body and steel bushing, the steel bushing
It is set in the top flat on the top of the concrete pier main body and the top of the steel bushing and the concrete pier main body
Together；
Girder steel, the girder steel include top plate and bottom plate and the web that is connected between the top plate and the bottom plate, the steel
The bottom plate of beam is fixed on the top of the bridge pier and is welded to connect with the top of the steel bushing, the sagging moment area of the girder steel
It is disposed with the multiple first common pegs on the top plate, is disposed with multiple resistance to pluckings on the top plate of the hogging moment area of the girder steel
Not shear stud；
Concrete slab, the concrete slab, which pours, to be fixed on the top plate, and described on the top plate
Shear stud is not embedded in the concrete slab for one common peg and the resistance to plucking, is formed with the concrete slab
Compound action.
The strong bridge structure of embodiment according to a first aspect of the present invention, compared to traditional Prestressed concrete rigid-frame bridge knot
Structure system, can be to avoid the bridge pier pier bottom position of rigid frame bridge, the binding site of bridge pier and girder steel and the concrete bridge of hogging moment area
The problem of Cracking of panel, meanwhile, the quality of rigid frame bridge is lighter, the rigidity of structure and bearing capacity are bigger, therefore, compared to traditional
Rigid frame bridge has very big span ability.In addition, girder (including girder steel and the concrete surface of first aspect present invention embodiment
Plate) it does not need partially to apply any prestressing force, therefore, prestress engineering amount greatly reduces when construction, shortens construction period, drops
Low difficulty of construction, and avoid long-term caused by traditional rigid frame bridge later period girder loss of prestress, concrete shrinkage and creep
Downwarp problem.
One embodiment according to a first aspect of the present invention, the section of the girder steel are box-type section, the box-type section
For silent box or cracking box.
One embodiment according to a first aspect of the present invention, the web are Wavelike steel webplate.
One embodiment according to a first aspect of the present invention, the material of the concrete slab be normal concrete or
For the concrete mixed with micro-expanding agent.
One embodiment according to a first aspect of the present invention, the concrete slab is using existing directly on the top plate
Pour panel that construction molding obtains or the concrete slab use it is pre- in the concrete being laid on the top plate in advance
The panel that pouring molding obtains in making sheet.
One embodiment according to a first aspect of the present invention further includes the institute for pouring the hogging moment area for being fixed on the girder steel
The concrete layer on bottom plate is stated, the multiple second common pegs are disposed on the bottom plate of the hogging moment area of the girder steel, it is described
Second common peg is embedded in the concrete layer, forms compound action with the concrete layer.
Further embodiment according to a first aspect of the present invention, the bridge pier further include presstressed reinforcing steel, the presstressed reinforcing steel
It is vertically applied in the concrete pier and upper end of the presstressed reinforcing steel and stretches out the top of the concrete pier main body simultaneously
The bottom plate across the hogging moment area of the girder steel is anchored in the concrete layer on the bottom plate.
One embodiment according to a first aspect of the present invention is disposed with the common bolt of multiple thirds on the inner wall of the steel bushing
Nail, the common peg of third are embedded in the concrete pier main body.
One embodiment according to a first aspect of the present invention, the length of the steel bushing are the concrete pier main body
The half of height.
Second aspect of the present invention additionally provides a kind of rigid frame bridge knot of any one embodiment according to a first aspect of the present invention
The construction method of structure.
Construction method according to a second aspect of the present invention, including following construction procedure:
Live Bridge Pier Construction: the lower half portion of concrete pier main body described in cast in situs, steel bushing described in location and installation,
With the construction formwork for the top half that the steel bushing is the concrete pier main body, the concrete pier main body is poured
Upper plate half；
Factory prepares girder steel: in factory, multiple described first are arranged on the top plate of the girder steel in sagging moment area
Common peg arranges multiple resistance to pluckings not shear stud on the top plate of the girder steel of hogging moment area.
In-site installation girder steel: the girder steel of the girder steel in cantilever installation sagging moment area and hogging moment area at the scene, and
The bottom plate of the girder steel of hogging moment area at the bridge pier pier top is connect by the way of welding with the steel bushing, it is just curved
Cantilever connection type between the girder steel in square area and the girder steel of hogging moment area is connected or is welded using high-strength bolt；
Casting concrete bridge floor: after the completion of the steel girder erection, first pouring the concrete slab in sagging moment area,
The concrete slab of hogging moment area is poured again；
Tensioning bridge pier vertical prestressing: after the concrete bridge deck sheet metal forming, bridge pier pier top described in tensioning is vertically answered in advance
Power removes construction equipment until the bridge pier pier bottom is in uniform-compression state, completes structure construction.
The construction method of embodiment according to a second aspect of the present invention, girder (including girder steel and concrete slab) are partially not required to
Apply any prestressing force, therefore, prestress engineering amount greatly reduces when construction, shortens construction period, and it is difficult to reduce construction
Degree, and avoid long-term deflection problem caused by traditional rigid frame bridge later period girder loss of prestress, concrete shrinkage and creep and
Problem of Cracking.The construction method of second aspect embodiment through the invention, obtained rigid frame bridge are mixed compared to traditional prestressing force
Solidifying soil strong bridge structure system, can be to avoid the bridge pier pier bottom position of rigid frame bridge, the binding site and hogging moment of bridge pier and girder steel
The problem of Cracking of the concrete slab in area, meanwhile, the quality of rigid frame bridge is lighter, the rigidity of structure and bearing capacity are bigger, therefore,
There is very big span ability compared to traditional rigid frame bridge.
One embodiment according to a second aspect of the present invention, in the step of factory prepares girder steel, in hogging moment area
The girder steel the bottom plate on arrange the multiple second common pegs；Correspondingly, in the in-site installation girder steel the step of,
After the steel girder erection when hogging moment area is good, the concrete layer described in the bottom plate upper of the girder steel of hogging moment area, institute
The second common peg is stated to be embedded in the concrete layer, after concrete layer molding, then the subsequent segment of cantilever.
Further embodiment according to a second aspect of the present invention, in the live Bridge Pier Construction step, casting concrete
Pre-buried vertical prestressing bar during bridge pier main body；Correspondingly, in the in-site installation girder steel the step of, so that described pre-
The upper end of stress rib passes through the bottom plate of the girder steel of hogging moment area, so as in the bottom plate upper of the girder steel of hogging moment area
When the concrete layer, it is embedded in the concrete layer.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the schematic diagram of the strong bridge structure of the prior art.
Fig. 2 is internal force diagram of the strong bridge structure of Fig. 1 under typical condition.
Fig. 3 is the side schematic view of the rigid frame bridge of first aspect present invention embodiment.
Fig. 4 is the longitudinal profile schematic diagram of Fig. 3.
Fig. 5 is schematic diagram at A-A in Fig. 3.
Fig. 6 is schematic diagram at B-B in Fig. 3.
Fig. 7 is schematic diagram at C-C in Fig. 3.
Fig. 8 (a) is a state side of the live Bridge Pier Construction in the construction method of second aspect of the present invention embodiment
Figure.
Fig. 8 (b) is the diagrammatic cross-section of Fig. 8 (a).
Fig. 9 (a) is another state side of the live Bridge Pier Construction in the construction method of second aspect of the present invention embodiment
Face figure.
Fig. 9 (b) is the diagrammatic cross-section of Fig. 9 (a).
Figure 10 (a) is a state side of the in-site installation girder steel in the construction method of second aspect of the present invention embodiment
Figure.
Figure 10 (b) is the diagrammatic cross-section of Figure 10 (a).
Figure 11 (a) is another state side of the in-site installation girder steel in the construction method of second aspect of the present invention embodiment
Face figure.
Figure 11 (b) is the diagrammatic cross-section of Figure 11 (a).
Figure 12 is the state signal of the casting concrete bridge floor in the construction method of second aspect of the present invention embodiment
Figure.
Figure 13 is that another state of the casting concrete bridge floor in the construction method of second aspect of the present invention embodiment is shown
It is intended to.
Appended drawing reference:
Strong bridge structure 1000
12 presstressed reinforcing steel of bridge pier 1 concrete pier main body, 11 steel bushing, the 13 common peg 14 of third
2 top plate of girder steel, 21 bottom plate, 22 web 23
First common 24 resistance to plucking of the peg not common peg 26 of shear stud 25 second
Concrete slab 3
Concrete layer 4
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
The strong bridge structure 1000 of embodiment according to a first aspect of the present invention is described below with reference to Fig. 3 to Fig. 7.
As shown in Fig. 3 to Fig. 7, the strong bridge structure 1000 of embodiment, including bridge pier 1, steel according to a first aspect of the present invention
Beam 2 and concrete slab 3, bridge pier 1 is for vertical prestressing bridge pier and including concrete pier main body 11 and steel bushing 12, steel bushing
It is concordant with the top of concrete pier main body 11 that cylinder 12 is set in the top of concrete pier main body 11 and the top of steel bushing 12；
Girder steel 2 includes top plate 21, bottom plate 22 and the web 23 being connected between top plate 21 and bottom plate 22, and the bottom plate 22 of girder steel 2 is fixed on
It the top of bridge pier 1 and is welded to connect with the top of steel bushing 12, is disposed with multiple first on the top plate 21 in the sagging moment area of girder steel 2
Common peg 24 is disposed with multiple resistance to pluckings not shear stud 25 on the top plate 21 of the hogging moment area of girder steel 2；Concrete slab 3
It pours and is fixed on top plate 21, shear stud 25 is not embedded in concrete bridge deck for the common peg 24 of first on top plate 21 and resistance to plucking
In plate 3, compound action is formed with concrete slab 3.
Specifically, bridge pier 1 is vertical prestressing bridge pier 1；That is, applying to bridge pier 1 and vertically answering in advance in Cheng Qiaohou
Power, adjustable 1 pier bottom stress distribution of bridge pier, so that bridge pier 1 is in the favo(u)red state of total cross-section uniform-compression as far as possible, thus
So that 1 pier bottom of bridge pier will not generate tensile stress, 1 pier bottom of bridge pier is avoided to crack.Bridge pier 1 includes 11 He of concrete pier main body
Steel bushing 12, steel bushing 12 are set in top and the concrete pier main body on the top of concrete pier main body 11 and steel bushing 12
11 top is concordant；That is, concrete pier main body 11 plays main support, steel bushing 12 is wrapped in concrete pier
The top of main body 11 improves the rigidity of bridge pier 1 by the compound action of steel bushing 12 and concrete pier main body 11.
Girder steel 2 includes top plate 21, bottom plate 22 and the web 23 being connected between top plate 21 and bottom plate 22.Wherein, girder steel 2
Bottom plate 22 is fixed on the top of bridge pier 1 and is welded to connect with the top of steel bushing 12, that is to say, that girder steel 2 is solid by bottom plate 22
It is scheduled on the top of bridge section and is supported, it is steel structure connection form, due to pier that the top of bottom plate 22 and steel bushing 12, which is welded to connect,
There is steel plate package in the outer surface of beam engaging portion, therefore there is no the risk that the engaging portion Dun Liang is cracked under Moment, solves
The rigid frame bridge engaging portion Dun Liang problem easy to crack under action of long-term load in traditional design, while steel bushing 12 is in construction
Template can also be also served as, form work engineering amount when bridge pier 1 is constructed is reduced.In addition, by 1 compound action of steel bushing 12 and bridge pier,
The rigidity of bridge pier 1 gets a promotion, and the vertical rigidity of bridge structure is also improved.On the top plate 21 in the sagging moment area of girder steel 2
The multiple first common pegs 24 are disposed with, to be connected with the concrete slab 3 in sagging moment area, compound action are formed, to mention
Rise the rigidity and bearing capacity of 3 one of girder, that is, sagging moment area girder steel 2 and concrete slab in sagging moment area.Girder steel 2 is born
Multiple resistance to pluckings not shear stud 25 are disposed on the top plate 21 in moment of flexure area；So as to discharge the concrete slab 3 of hogging moment area with
The compound action of girder steel 2 prevents the concrete slab 3 of hogging moment area from cracking due to 2 cooperative transformation of girder steel with hogging moment area.
Concrete slab 3, which pours, to be fixed on top plate 21, the common peg 24 of first on top plate 21 and resistance to plucking not shearing resistance
Peg 25 is embedded in concrete slab 3, forms compound action with concrete slab 3.It is understood that sagging moment area
Top plate 21 on the first common peg 24, the concrete slab 3 in sagging moment area is connected, forms compound action, can be promoted
The rigidity and bearing capacity of 3 one of the girder in sagging moment area, that is, sagging moment area girder steel 2 and concrete slab.The top of hogging moment area
Resistance to plucking on plate 21 not shear stud 25, can discharge the concrete slab 3 of hogging moment area and the compound action of girder steel 2, prevent
Only the concrete slab 3 of hogging moment area cracks due to 2 cooperative transformation of girder steel with hogging moment area.
The strong bridge structure 1000 of embodiment according to a first aspect of the present invention, compared to traditional rigid structure of prestressed concrete
1000 system of bridge structure, can binding site to avoid the 1 pier bottom position of bridge pier of rigid frame bridge, bridge pier 1 and girder steel 2 and hogging moment area
Concrete slab 3 problem of Cracking, meanwhile, the quality of rigid frame bridge is lighter, the rigidity of structure and bearing capacity are bigger, therefore,
There is very big span ability compared to traditional rigid frame bridge.In addition, girder (including the girder steel of first aspect present invention embodiment
2 and concrete slab) do not need partially to apply any prestressing force, therefore, prestress engineering amount greatly reduces when construction, shortens
Construction period reduces difficulty of construction, and avoids traditional rigid frame bridge later period girder loss of prestress, concrete shrinkage and creep
Caused long-term deflection problem.
The section of one embodiment according to a first aspect of the present invention, girder steel 2 is box-type section, and box-type section can be to close
Mouth box or cracking box.It is understood that 2 anti-twisting property of girder steel of box-type section is strong, it is convenient for cast-in-place construction, own wt
Gently.
One embodiment according to a first aspect of the present invention, web 23 are Wavelike steel webplate.It is understood that web 23
Using Wavelike steel webplate structure, the axial rigidity of girder can be reduced, mitigates temperature load effect lower girder axial deformation to bridge
The moment of flexure of 1 engaging portion Dun Liang of pier and pier bottom and basic engaging portion, reduces the thrust to basis.
One embodiment according to a first aspect of the present invention, the material of concrete slab 3 can be normal concrete, warp
Ji property is good；Or the material of concrete slab 3 is the concrete mixed with micro-expanding agent, can suitably reduce the receipts of concrete
Shrinkage is conducive to the problem of Cracking for avoiding concrete slab 3.
One embodiment according to a first aspect of the present invention, concrete slab 3 are applied using directly cast-in-place on top plate 21
The panel or concrete slab 3 that work forms are used and are poured on the concrete prefabricated board being laid on top plate 21 in advance
The panel that the type of building up obtains.Construction is simple as a result,.
One embodiment according to a first aspect of the present invention further includes the bottom plate for pouring the hogging moment area for being fixed on girder steel 2
Concrete layer 4 on 22 is disposed with the multiple second common pegs 26, the second common bolt on the bottom plate 22 of the hogging moment area of girder steel 2
Nail 26 is embedded in concrete layer 4, forms compound action with concrete layer 4.It is understood that in the hogging moment area of girder steel 2
Bottom plate 22 on arrange the second common peg 26, while a layer concrete layer is poured on the bottom plate of the hogging moment area of girder steel 2 22
4, compound action is formed with the bottom plate 22 of the hogging moment area of girder steel 2, to promote the rigidity and bearing capacity of the girder of hogging moment area.
Further embodiment according to a first aspect of the present invention, bridge pier 1 further include presstressed reinforcing steel 13, and presstressed reinforcing steel 13 is vertical
In the concrete pier 1 and upper end of presstressed reinforcing steel 13 is applied in stretch out the top of concrete pier main body 11 and pass through girder steel 2
The bottom plate 22 of hogging moment area is anchored in the concrete layer 4 on bottom plate 22.By the way that presstressed reinforcing steel 13 is arranged, so as to from hogging moment
4 top of concrete layer on the bottom plate 22 in area applies vertical prestressing by stretching method to bridge pier 1；Meanwhile also facilitating to bridge pier 1
The concrete pulling stress level of pier bottom two sides is monitored, so that two sides tensile stress size is almost the same.
One embodiment according to a first aspect of the present invention is disposed with the common peg of multiple thirds on the inner wall of steel bushing 12
14, the common peg 14 of third is embedded in concrete pier main body 11.Be conducive to enhance steel bushing 12 and concrete pier as a result,
The compound action that main body 11 connects.
One embodiment according to a first aspect of the present invention, the length of steel bushing 12 are the height of concrete pier main body 11
Half.Thus, it is possible to the rigidity of bridge pier 1 is improved, it is easy for construction.
Second aspect of the present invention additionally provides a kind of rigid frame bridge of any one embodiment according to a first aspect of the present invention
Construction method.
The construction method of second aspect of the present invention embodiment is described below with reference to Fig. 8 (a) to Figure 13.The construction method packet
Include following construction procedure:
Live Bridge Pier Construction: as shown in Fig. 8 (a) to Fig. 9 (b), the lower half portion of poured in place concrete bridge pier main body 11,
Location and installation steel bushing 12, with the construction formwork for the top half that steel bushing 12 is concrete pier main body 11, casting concrete
The upper plate half of bridge pier main body 11；In casting process, pre-buried presstressed reinforcing steel pipeline is paid attention to, for later period presstressed reinforcing steel 13
Tensioning.
Factory prepares girder steel: in factory, the multiple first common pegs are arranged on the top plate 21 of the girder steel 2 in sagging moment area
24, multiple resistance to pluckings not shear stud 25 are arranged on the top plate 21 of the girder steel 2 of hogging moment area, ready girder steel 2 are transported to existing
.
In-site installation girder steel: the girder steel 2 of the girder steel 2 in cantilever installation sagging moment area and hogging moment area at the scene, wherein as schemed
Shown in 10 (a) and Figure 10 (b), the girder steel 2 of hogging moment area is mounted at 1 pier top of bridge pier, and by the bottom plate of the girder steel of hogging moment area 2
22 are connect by the way of welding with steel bushing 12, simultaneously, it is contemplated that the stress collection of commissure neutralizes may tear under fatigue load
The problem of splitting can use the ribbed stiffener reinforcement of triangle, i.e., by triangle ribbed stiffener between steel bushing 12 and bottom plate 22
Two right-angle sides are welded with bottom plate 22 and sleeve outer wall respectively；It is outstanding between the girder steel 2 in sagging moment area and the girder steel 2 of hogging moment area
Connection type is spelled to connect or weld using high-strength bolt.
Casting concrete bridge floor: after girder steel 2 is installed, as shown in Figure 12 and Figure 13, the mixed of sagging moment area is first poured
Solidifying soil floorings 3, then pour the concrete slab 3 of hogging moment area.What needs to be explained here is that when in order to make into bridge in structure
Power distribution is as reasonable as possible, it is proposed that first pours the concrete slab 3 in the sagging moment area at both ends, then pours positive moment of span central point area
Concrete slab 3, finally, the concrete slab 3 of hogging moment area is poured again, the concrete bridge on the top plate 21 of hogging moment area
Panel 3 is proposed with the expansive concrete mixed with micro-expanding agent, to promote the cracking resistance of the concrete slab 3 of hogging moment area
Ability.
Tensioning bridge pier vertical prestressing: after the molding of concrete slab 3,1 pier top vertical prestressing of tensioning bridge pier, until
1 pier bottom of bridge pier is in uniform-compression state, removes construction equipment, completes structure construction.
The construction method of embodiment according to a second aspect of the present invention, girder (including girder steel 2 and concrete slab 3) part
It does not need to apply any prestressing force, therefore, prestress engineering amount greatly reduces when construction, shortens construction period, reduces and apply
Work difficulty, and avoid long-term deflection caused by traditional rigid frame bridge later period girder loss of prestress, concrete shrinkage and creep and ask
Topic and problem of Cracking.The construction method of second aspect embodiment through the invention, obtained rigid frame bridge pre- are answered compared to traditional
1000 system of power Concrete Rigid Frame structure, can be to avoid the 1 pier bottom position of bridge pier of rigid frame bridge, the engaging portion of bridge pier 1 and girder steel 2
The problem of Cracking of the concrete slab 3 of position and hogging moment area, meanwhile, the quality of rigid frame bridge is lighter, the rigidity of structure and carrying energy
Power is bigger, therefore, has very big span ability compared to traditional rigid frame bridge.
One embodiment according to a second aspect of the present invention, the steel in the step of factory prepares girder steel 2, in hogging moment area
The multiple second common pegs 26 are arranged on the bottom plate 22 of beam 2；Correspondingly, in the step of installing girder steel 2 at the scene, such as Figure 11 (a)
With shown in Figure 11 (b), after the girder steel 2 when hogging moment area installs, in the 22 upper concrete of bottom plate of the girder steel 2 of hogging moment area
Layer 4, the second common peg 26 is embedded in concrete layer 4, after the molding of concrete layer 4, then the subsequent segment of cantilever, namely hang again
Spell the girder steel 2 in sagging moment area.It needs exist for illustratively, the thickness of the 22 upper concrete layer 4 of bottom plate of the girder steel 2 of hogging moment area
Degree is determined according to calculating, generally between 300-600mm.
Further embodiment according to a second aspect of the present invention, as shown in Fig. 8 (a) to Figure 11 (b), bridge pier 1 is applied at the scene
During work step is rapid, pre-buried vertical prestressing bar 13 during casting concrete bridge pier main body 11；Correspondingly, girder steel is installed at the scene
In 2 the step of, so that the upper end of presstressed reinforcing steel 13 passes through the bottom plate 22 of the girder steel 2 of hogging moment area, so as in the steel of hogging moment area
When the 22 upper concrete layer 4 of bottom plate of beam 2, it is embedded in concrete layer 4.
One embodiment according to a second aspect of the present invention, can be according to Code for design of steel structures on the inner wall of steel bushing 12
Vertical ribbed stiffener is arranged, to guarantee the local stability of steel bushing 12 in work progress.
One embodiment according to a third aspect of the present invention, the inner wall of steel bushing 12 are disposed with the common peg of multiple thirds
14, to enhance the compound action with concrete pier main body 11.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (12)
1. a kind of strong bridge structure characterized by comprising
Bridge pier, for vertical prestressing bridge pier and including concrete pier main body and steel bushing, the steel bushing is arranged the bridge pier
The top of the concrete pier main body and the top of the steel bushing it is concordant with the top of the concrete pier main body；
Girder steel, the girder steel include top plate and bottom plate and the web that is connected between the top plate and the bottom plate, the girder steel
Bottom plate be fixed on the top of the bridge pier and with the top of the steel bushing be welded to connect, the sagging moment area of the girder steel it is described
It is disposed with the multiple first common pegs on top plate, is disposed with multiple resistance to pluckings on the top plate of the hogging moment area of the girder steel and does not resist
Cut peg；
Concrete slab, the concrete slab, which pours, to be fixed on the top plate, and described first on the top plate is general
Shear stud is not embedded in the concrete slab for logical peg and the resistance to plucking, is combined with concrete slab formation
Effect.
2. strong bridge structure according to claim 1, which is characterized in that the section of the girder steel is box-type section, described
Box-type section is silent box or cracking box.
3. strong bridge structure according to claim 1, which is characterized in that the web is Wavelike steel webplate.
4. strong bridge structure according to claim 1, which is characterized in that the material of the concrete slab is common mixed
Solidifying soil is the concrete mixed with micro-expanding agent.
5. strong bridge structure according to claim 1, which is characterized in that the concrete slab is using directly described
The panel or the concrete slab that cast-in-place construction forms on top plate use on being laid on the top plate in advance
The panel that pouring molding obtains on concrete prefabricated board.
6. strong bridge structure according to claim 1, which is characterized in that further include pouring that be fixed on bearing for the girder steel curved
Concrete layer on the bottom plate in square area is disposed with the multiple second common bolts on the bottom plate of the hogging moment area of the girder steel
Nail, the second common peg are embedded in the concrete layer, form compound action with the concrete layer.
7. strong bridge structure according to claim 6, which is characterized in that the bridge pier further includes presstressed reinforcing steel, described pre-
Stress rib is vertically applied in the concrete pier and upper end of the presstressed reinforcing steel and stretches out the concrete pier main body
Top and pass through the girder steel hogging moment area the bottom plate, be anchored in the concrete layer on the bottom plate.
8. strong bridge structure according to claim 1, which is characterized in that be disposed with multiple on the inner wall of the steel bushing
Three common pegs, the common peg of third are embedded in the concrete pier main body.
9. strong bridge structure according to claim 1, which is characterized in that the length of the steel bushing is the concrete bridge
The half of the height of pier main body.
10. a kind of such as any one construction method to the rigid frame bridge in claim 1~9, which is characterized in that including as follows
Construction procedure:
Live Bridge Pier Construction: the lower half portion of concrete pier main body described in cast in situs, steel bushing described in location and installation, with institute
The construction formwork for stating the top half that steel bushing is the concrete pier main body, pours the upper plate of the concrete pier main body
Half part；
Factory prepares girder steel: in factory, arranging that multiple described first is common on the top plate of the girder steel in sagging moment area
Peg arranges multiple resistance to pluckings not shear stud on the top plate of the girder steel of hogging moment area.
In-site installation girder steel: the girder steel of the girder steel in cantilever installation sagging moment area and hogging moment area at the scene, and by institute
The bottom plate for stating the girder steel of the hogging moment area at bridge pier pier top is connect by the way of welding with the steel bushing, sagging moment area
The girder steel and hogging moment area the girder steel between cantilever connection type using high-strength bolt connect or weld；
Casting concrete bridge floor: after the completion of the steel girder erection, the concrete slab in sagging moment area is first poured, then is poured
Build the concrete slab of hogging moment area；
Tensioning bridge pier vertical prestressing: after the concrete bridge deck sheet metal forming, bridge pier pier top vertical prestressing described in tensioning, directly
It is in uniform-compression state to the bridge pier pier bottom, removes construction equipment, completes structure construction.
11. the construction method of rigid frame bridge according to claim 10, which is characterized in that prepare the step of girder steel in the factory
In rapid, the multiple second common pegs are arranged on the bottom plate of the girder steel of hogging moment area；Correspondingly, in the scene peace
In the step of steel loading beam, after the steel girder erection when hogging moment area is good, in the bottom plate upper of the girder steel of hogging moment area
The concrete layer, the second common peg are embedded in the concrete layer, after concrete layer molding, then cantilever
Subsequent segment.
12. the construction method of rigid frame bridge according to claim 11, which is characterized in that in the live Bridge Pier Construction step
In, pre-buried vertical prestressing bar during casting concrete bridge pier main body；Correspondingly, the in-site installation girder steel the step of
In, so that the upper end of the presstressed reinforcing steel passes through the bottom plate of the girder steel of hogging moment area, so as in the steel of hogging moment area
When concrete layer described in the bottom plate upper of beam, it is embedded in the concrete layer.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748682A (en) * | 2010-01-22 | 2010-06-23 | 清华大学 | Steel-concrete composite beam adopting corrugated steel web and construction method thereof |
| CN101906754A (en) * | 2010-07-09 | 2010-12-08 | 清华大学 | Rigid connection method for steel beam and concrete pier |
| CN102425105A (en) * | 2011-12-09 | 2012-04-25 | 清华大学 | Longitudinal non-shearing resistance screw-type pullout-resistance connecting piece and construction method thereof |
| CN102561199A (en) * | 2012-01-19 | 2012-07-11 | 浙江大学 | Method of vertical crack resistance of hogging moment tension zone of single-column concrete bridge pier |
| CN102635064A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Pre-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| US20120279000A1 (en) * | 2010-01-29 | 2012-11-08 | Yong Joo Kim | Construction method of steel composition girder bridge |
| CN106192730A (en) * | 2016-08-01 | 2016-12-07 | 上海应用技术学院 | A kind of steel bushing precast splice type bridge pier of band WELDING STUDS |
| CN106351113A (en) * | 2016-08-28 | 2017-01-25 | 防灾科技学院 | Earthquake control system of high-speed railway bridge |
| CN206109961U (en) * | 2016-09-29 | 2017-04-19 | 石家庄铁道大学 | Steel concrete combination and continuous box girder bridge of coincide dual function |
| CN208219408U (en) * | 2018-03-16 | 2018-12-11 | 广州市市政工程设计研究总院 | A kind of steel-mixes the bridge floor continuous structure of composite beam bridge |
| CN211113109U (en) * | 2019-07-03 | 2020-07-28 | 清华大学 | Rigid frame bridge structure |
-
2019
- 2019-07-03 CN CN201910593667.XA patent/CN110409279A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748682A (en) * | 2010-01-22 | 2010-06-23 | 清华大学 | Steel-concrete composite beam adopting corrugated steel web and construction method thereof |
| US20120279000A1 (en) * | 2010-01-29 | 2012-11-08 | Yong Joo Kim | Construction method of steel composition girder bridge |
| CN101906754A (en) * | 2010-07-09 | 2010-12-08 | 清华大学 | Rigid connection method for steel beam and concrete pier |
| CN102425105A (en) * | 2011-12-09 | 2012-04-25 | 清华大学 | Longitudinal non-shearing resistance screw-type pullout-resistance connecting piece and construction method thereof |
| CN102561199A (en) * | 2012-01-19 | 2012-07-11 | 浙江大学 | Method of vertical crack resistance of hogging moment tension zone of single-column concrete bridge pier |
| CN102635064A (en) * | 2012-04-28 | 2012-08-15 | 西安建筑科技大学 | Pre-tensioned prestressing steel pipe high-strength concrete superposition bridge pier and construction method thereof |
| CN106192730A (en) * | 2016-08-01 | 2016-12-07 | 上海应用技术学院 | A kind of steel bushing precast splice type bridge pier of band WELDING STUDS |
| CN106351113A (en) * | 2016-08-28 | 2017-01-25 | 防灾科技学院 | Earthquake control system of high-speed railway bridge |
| CN206109961U (en) * | 2016-09-29 | 2017-04-19 | 石家庄铁道大学 | Steel concrete combination and continuous box girder bridge of coincide dual function |
| CN208219408U (en) * | 2018-03-16 | 2018-12-11 | 广州市市政工程设计研究总院 | A kind of steel-mixes the bridge floor continuous structure of composite beam bridge |
| CN211113109U (en) * | 2019-07-03 | 2020-07-28 | 清华大学 | Rigid frame bridge structure |
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