CN207973983U - It can rapidly-assembled precast bridge - Google Patents
It can rapidly-assembled precast bridge Download PDFInfo
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- CN207973983U CN207973983U CN201820225027.4U CN201820225027U CN207973983U CN 207973983 U CN207973983 U CN 207973983U CN 201820225027 U CN201820225027 U CN 201820225027U CN 207973983 U CN207973983 U CN 207973983U
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- 238000009408 flooring Methods 0.000 claims abstract description 172
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 77
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 7
- 239000004567 concrete Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000011900 installation process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The utility model belongs to technical field of civil, open one kind can rapidly-assembled precast bridge, including middle part precast bridge module and the edge precast bridge module set on its both sides；Middle part precast bridge module includes more and is located at the middle part floorings between the precast main beam of middle part in the middle part precast main beam and polylith of precast bridge length and width directional spreding respectively；Edge precast bridge module includes the more edge floorings in the edge precast main beam, polylith that precast bridge length direction is distributed above edge precast main beam, and edge bridge panel end is crossed in the precast main beam of middle part；Between edge floorings and middle part floorings and in precast bridge width direction between adjacent middle part floorings there is longitudinal cast-in-place seam to be located at the top of the precast main beam of middle part for pouring into a mould ultra-high performance concrete, longitudinal cast-in-place seam；Between adjacent edge floorings and laterally cast-in-place seam is set in precast bridge length direction between adjacent middle part floorings to be used to pour into a mould ultra-high performance concrete.
Description
Technical field
The utility model is related to technical field of civil, and in particular, to one kind can rapidly-assembled precast bridge.
Background technology
Prefabricated PC concrete T-shaped beam bridge widely used at present is with simple in structure, stress is clear, saves material
To expect, sets up easy for installation, the advantages that span ability is larger, the economic spans of normal concrete T beams is generally 25m~40m, but with
The increase of across footpath, T beam dead load accountings can be increasing, and lifting weight also can be weighed increasingly, current 40m monolithic T beams
Lifting weight has reached 140t, stringent to hanging device and construction process requirement, if you need to make the scope of application of T beams expand, it is still necessary to
Solve following two critical issues：
1）The excessive problem of beam dead load accounting across T greatly；
2）The excessive problem of beam lifting weight across T greatly, preliminary analysis find that the floorings occupied area of conventional T beams is about T
40%, the T beams of beam gross sectional area once lift weight, require height to construction equipment, while construction speed may be brought slow
Drawback.
Invention content
The utility model solve the technical issues of be in view of the drawbacks of the prior art, provide it is a kind of installation quickly, structure
From heavy and light, durability it is good can rapidly-assembled precast bridge.
The purpose of this utility model is achieved through the following technical solutions：
One kind can rapidly-assembled precast bridge, including middle part precast bridge module and be set to middle part precast bridge module two
The edge precast bridge module of side.
Wherein middle part precast bridge module includes more pre- at the middle part of precast bridge length and width directional spreding respectively
Girder and polylith processed are located at the middle part floorings between the precast main beam of middle part, and at least one layer is equipped in the floorings of middle part along prefabricated
The lateral stressed reinforcing bar of bridge width direction setting and the longitudinally connected reinforcing bar perpendicular to lateral stressed reinforcing bar.
Edge precast bridge module includes that more the edge precast main beams being distributed in precast bridge length direction, polyliths are set to
Edge floorings right over edge precast main beam, edge floorings are crossed on correspondence close to the end of middle part precast bridge module
Be equipped in the precast main beam of middle part, in edge floorings at least one layer of lateral stressed reinforcing bar along the setting of precast bridge width direction with
And the longitudinally connected reinforcing bar perpendicular to lateral stressed reinforcing bar.
Middle part precast main beam, middle part floorings, edge precast main beam and edge floorings are ultra-high performance concrete knot
Structure.
In precast bridge width between edge floorings and middle part floorings and between middle part floorings and middle part floorings
There is longitudinal cast-in-place seam to be located at middle part precast main beam top for pouring into a mould ultra-high performance concrete, longitudinal cast-in-place seam on direction
Portion.
In precast bridge length between edge floorings and edge floorings and between middle part floorings and middle part floorings
Have lateral cast-in-place seam for pouring into a mould ultra-high performance concrete on direction.
The bottom tensile region of middle part precast main beam and edge precast main beam is arranged with prestressed strand or deformed bar.
Further, middle part precast main beam is embedded with Shear connection key, edge bridge on the surface contacted with middle part floorings
Lateral stressed reinforcing bar in panel and middle part floorings connects with Shear connection key respectively.
Further, the longitudinally connected reinforcing bar between the floorings of middle part connects successively.
Further, the longitudinally connected reinforcing bar between edge floorings connects successively.
Further, middle part floorings and edge floorings are cuboid-type structure, middle part floorings and edge floorings
Plate width in precast bridge vehicle forward direction is equal, and the plate thickness of middle part floorings and edge floorings is equal, and the plate is wide
It is 45~60 with plate thickness ratio.
Further, middle part floorings and edge floorings are waffle-type structure, and the waffle-type structure includes bottom
Plate and the orthogonal cross rib on bottom plate and longitudinal rib, bottom plate thickness are 3~8cm.
Further, edge precast main beam with the contact position of edge floorings at be equipped at least one back pouring hole hole,
Shear connection key is embedded in back pouring hole hole, edge floorings are equipped with the cast-in-place area of hole, side in position corresponding with back pouring hole hole
Lateral stressed reinforcing bar and longitudinally connected reinforcing bar in edge floorings are continuous state in the cast-in-place area of hole, are poured after edge floorings
Shear connection key in hole in edge floorings lateral stressed reinforcing bar and longitudinally connected reinforcing bar connect, back pouring hole hole and hole
Hole has poured ultra-high performance concrete in cast-in-place area.
Further, transverse steel, the transverse steel and middle part floorings and/or side are laid in longitudinal cast-in-place seam
Lateral stressed reinforcing bar in edge floorings connects.
Further, laterally lateral stressed reinforcing bar identical with the ratio of reinforcement in the floorings of middle part is laid in cast-in-place seam.
Further, laterally the width of cast-in-place seam is 10~40cm.
Compared with prior art, the utility model has the advantages that：
1）It is pre- that middle part is made using the ultra-high performance concrete material that, compression strength strong with toughness are high and endurance quality is good
Bridge module and edge precast bridge module processed, it is ensured that the precast bridge of the utility model is under heat curing condition substantially without receipts
Contracting, and very little of creeping under action of long-term load（About the 1/10 of normal concrete）Furthermore under the conditions of, ultra-high performance concrete
Structure can mitigate 20%~40% compared with normal concrete dead load, and span ability is big, be applicable to 30~60m across footpaths；
2）Traditional bridge panel is subdivided into floorings and polylith edge floorings in the middle part of polylith, wherein middle part floorings
Be located between different middle part precast main beams, edge floorings be crossed on edge precast main beam and corresponding middle part precast main beam it
Between, then using the form of cast-in-place seam corresponded to and be bonded, use the thinking of " breaking the whole up into parts ", when construction can be stage by stage
Installation, and it is not necessarily to temporary support in entire bridge floor plate installation process, it is not required to employ large lifting equipment, lifting equipment rises
Beijing South Maxpower Technology Co. Ltd's power can only need the half of conventional bridge construction, reduce installation difficulty and installation cost；
3）Longitudinal cast-in-place seam is located at the top of the precast main beam compression flange of middle part, is on the one hand not necessarily to additional template to middle part bridge
Panel is supported, and on the other hand can guarantee middle part floorings, edge floorings and right by pouring ultra-high performance concrete
The middle part precast main beam answered is bonded；
4）Laterally the reasonable setting of cast-in-place seam and longitudinal cast-in-place seaming position can effectively mitigate middle part floorings and edge
Floorings inevitable error in prefabricated and installation process；
5）The setting of Shear connection key in the precast main beam of middle part, the lateral stressed reinforcing bar in the floorings of middle part and longitudinally connected
Mutual effective connection between this three of reinforcing bar can assist ensuring the overall stability of precast bridge floorings；
6）The design of edge floorings and edge precast main beam, overlapped for inconvenience when solving the floorings installation of bridge both sides
Drawback overcomes the design and construction problem of bridge cantilever position, further between edge floorings and edge precast main beam
The matching design in back pouring hole hole and the cast-in-place area of hole, it can be ensured that the stable connection of edge floorings and edge precast main beam；
7）The utility model can rapidly-assembled precast bridge dead load is light, durability is good, each module can scale
Independent production, and quick, rapid transformation, repair and new construction etc. suitable for bridge structure are installed.
Description of the drawings
Fig. 1 be it is described in embodiment 1 can rapidly-assembled precast bridge cross-section diagram（Edge section）；
Fig. 2 be it is described in embodiment 1 can rapidly-assembled precast bridge partial top view（Edge section）；
Fig. 3 is the vertical view of middle part floorings described in embodiment 1；
Fig. 4 is the main view sectional view of middle part floorings described in embodiment 1；
Fig. 5 is the top plan view of edge floorings described in embodiment 1；
Fig. 6 is the main view sectional view of the middle part floorings described in embodiment 2；
Fig. 7 is the main view sectional view of middle part floorings described in embodiment 3；
Fig. 8 is the main view sectional view of the middle part floorings described in embodiment 4；
Fig. 9 is the cross-section diagram of the middle part precast main beam described in embodiment 5.
Specific implementation mode
The utility model is further described With reference to embodiment, wherein being given for example only property of attached drawing
Illustrate, expression is only schematic diagram rather than pictorial diagram, should not be understood as the limitation to this patent；In order to which this reality is better described
With novel embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent the size of actual product；To ability
For field technique personnel, the omitting of some known structures and their instructions in the attached drawings are understandable.
Embodiment
As depicted in figs. 1 and 2, providing one kind can rapidly-assembled precast bridge comprising middle part precast bridge module and
It is respectively arranged on the edge precast bridge module of middle part precast bridge module both sides, wherein middle part precast bridge module refers in bridge
Length direction（That is vehicle forward direction on bridge floor）The upper part positioned at bridge center, and edge precast bridge module then refers to bridge
The module of central part both sides.
Specifically, precast bridge module in middle part includes the more middle part precast main beams being distributed in precast bridge length direction
（It is not shown）And polylith is located at the middle part floorings 2 between the precast main beam of middle part, while also dividing in precast bridge width direction
It is furnished with the middle part floorings 2 that precast main beams 1 and polylith in the middle part of in the of more are located between the precast main beam of middle part.
As shown in figure 3, to ensure the structural strength of middle part floorings itself, one layer is equipped in middle part floorings 2 along prefabricated
The lateral stressed reinforcing bar 21 and longitudinally connected reinforcing bar 22 perpendicular to lateral stressed reinforcing bar of bridge width direction setting, laterally by
It is close to connection between power reinforcing bar and longitudinally connected reinforcing bar and forms reinforcing bar web form.
As depicted in figs. 1 and 2, precast bridge module in edge includes more pre- at the edge that precast bridge length direction is distributed
Girder 3 processed, polylith are set to the edge floorings 4 right over edge precast main beam, and edge floorings 4 are close to middle part precast bridge mould
The end of block is crossed in corresponding middle part precast main beam 1, and at least one layer is equipped in edge floorings 4 along precast bridge width direction
The lateral stressed reinforcing bar 41 being arranged and the longitudinally connected reinforcing bar 42 perpendicular to lateral stressed reinforcing bar, each lateral stressed reinforcing bar of layer and
It is close to connection between longitudinally connected reinforcing bar respectively and forms reinforcing bar web form.
To ensure the overall construction intensity of the present embodiment Precast T-Beam bridge, middle part precast main beam 1, middle part floorings 2, edge
Precast main beam 3 and edge floorings 4 are ultra-high performance concrete structure, and ultra-high performance concrete structure has higher tough
It creeps under property, high compression strength and excellent durability, basic ungauged regions under conditions of thermal curing, and action of long-term load
Very little（About the 1/10 of normal concrete）, while because its good material property make bridge structure to lightweight, Long span side
It is civil engineering neck to developing and realizing long-life and the reduction later maintenance expense under use environment etc. great potential
The New Building Materials of the great application prospect in domain, it is current research shows that：With under the conditions of, ultra-high performance concrete structure is more common
Concrete structure dead weight can mitigate 20%~40%, and span ability is big, is applicable to 30~60m across footpaths.
I-beam or T-type beam can be used in middle part precast main beam 1 and edge precast main beam 3, and the precast bridge of the present embodiment is
Precast T-Beam bridge, therefore middle part precast main beam 1 and edge precast main beam 3 are T-type section, compression flange is distributed in Precast T-Beam
The width direction of bridge.
The compression flange width of middle part precast main beam and edge precast main beam is smaller than conventional general T beam compression flange,
The size of width and area need to combine the requirement of corresponding precast main beam rigidity and intensity to determine, under normal circumstances compression flange width
Desirable middle part precast main beam is the 15%~30% of precast bridge width direction spacing.
And the web width of middle part precast main beam and edge precast main beam is also small by 20% or so than the general T beam with across footpath.
As shown in Fig. 2, between edge floorings 4 and middle part floorings 2 and between middle part floorings 2 and middle part floorings 2
There is longitudinal cast-in-place seam 5 to be located at for pouring into a mould ultra-high performance concrete, longitudinal cast-in-place seam 5 in precast bridge width direction
1 top of middle part precast main beam.
In precast bridge between edge floorings 4 and edge floorings 4 and between middle part floorings 2 and middle part floorings 2
Have lateral cast-in-place seam 6 for pouring into a mould ultra-high performance concrete on length direction.
In precast bridge width direction, the spacing between edge precast main beam 3 and middle part precast main beam 1 and adjacent middle part
Spacing between precast main beam 1 is equal；On precast bridge length direction, the spacing between neighboring edge precast main beam 3 and phase
Spacing between adjacent middle part precast main beam 1 is equal.
As shown in Figure 1, the bottom tensile region of middle part precast main beam 1 and edge precast main beam 3 is arranged with post stretching and answers in advance
The quantity of power steel beam, steel beam is calculated according under the bearing capacity and normal operating condition of middle part precast main beam and edge precast main beam
It determines.
Middle part precast main beam 1 is embedded with Shear connection key 11, edge floorings 4 on the surface contacted with middle part floorings 2
It welds or binds with Shear connection key 11 respectively with the lateral stressed reinforcing bar in middle part floorings 2, it is ensured that middle part precast main beam 1
Respectively effective connection relation is formed with edge floorings 4, middle part floorings 2.
For the edge precast main beam 3 of precast bridge both sides, compression flange is cantilever slab, the installation of edge floorings
When inconvenience overlap, as shown in Figure 1, Figure 2 and Fig. 5 shown in, can make edge precast main beam 3 with the contact position of edge floorings 4 at（For
The compression flange position of edge precast main beam）Equipped at least one back pouring hole hole（It is not shown）, shearing is embedded in back pouring hole hole
Connecting key 31, edge floorings 4 are equipped with the cast-in-place area 43 of hole, the transverse direction in edge floorings in position corresponding with back pouring hole hole
Steel bar stress 41 and longitudinally connected reinforcing bar 42 are continuous state, the cast-in-place zone position side of edge bridge panel hole in the cast-in-place area 43 of hole
Shear connection key 31 in edge precast main beam in edge floorings lateral stressed reinforcing bar 41 and longitudinally connected reinforcing bar 42 connect,
Ultra-high performance concrete has been poured in back pouring hole hole and the cast-in-place area of hole.
The cast-in-place area of hole is adapted to back pouring hole hole size, and back pouring hole hole is general in the transverse width of precast bridge width direction
Width than edge precast main beam compression flange is small 15~30cm, and longitudinally wide in precast bridge length direction need to be according to side
Horizontal shear between edge floorings and edge precast main beam determines.
Specifically regular reinforcement, shear connector or steel plate etc. can be used in above-mentioned Shear connection key 11 and 31, and number is specifically arranged
Amount and density are determined that basic principle is to ensure each bridge by the shearing force in loading process between each floorings and corresponding precast main beam
It does not slide and detaches when panel is with corresponding precast main beam stress.
Middle part floorings 2 are the key that its thickness determines parameter in the lateral dimension of precast bridge width direction, pre-
The phases such as floorings stressing conditions during the longitudinal size in bridge length direction processed is then main and floorings hanging device, hoisting process
It closes.
As shown in figure 4, middle part floorings 2 and edge floorings 4 are waffle-type structure, waffle-type knot in the present embodiment
Structure includes bottom plate 71 and the orthogonal cross rib on bottom plate（It is not shown）With longitudinal rib 72, cross rib when prefabricated, longitudinal rib 72 and
Bottom plate 71, which synchronizes, to be poured, and waffle-type dead load is smaller, is applicable to the larger situation of each precast main beam spacing, cross rib and
Height, width and the spacing of longitudinal rib are then determined that the thickness of bottom plate 71 is then by prefabricated bridge by the floorings holistic resistant behavior of bridge
The checking computations of beam Local Loads Punching Shear determine（It is related with the spacing of cross rib and longitudinal rib）, the present embodiment midsole plate thickness is 3~8cm.
The integrated beauty of precast bridge can be improved using the waffle-type structure as middle part floorings 2 in edge floorings 4
The property seen.
To further ensure that the floorings overall stability of precast bridge, the longitudinally connected reinforcing bar between middle part floorings 2
22 need to weld or bind successively, and the longitudinally connected reinforcing bar 42 between edge floorings 4 also needs to weld or bind successively.
Certainly, it is not that middle part floorings and all lateral stressed reinforcing bars in edge floorings and longitudinally connected reinforcing bar are equal
Connection reinforcing bar need to be used as to use, can only extension be used as connection.
To make between edge floorings 4 and middle part floorings 2, between adjacent middle part floorings 2 in precast bridge width side
It is reliable to stable structure, also it is laid with transverse steel in longitudinal cast-in-place seam 5（It is not shown）, transverse steel and middle part floorings
And/or the lateral stressed reinforcement welding in edge floorings or binding.
Longitudinal cast-in-place 5 width of seam is generally smaller 15~30cm than middle part precast main beam compression flange width.
It is aforementioned mentioned between neighboring edge floorings 4, the longitudinally connected reinforcing bar between adjacent middle part floorings 2 passes through
Welding or binding are stably connected with, therefore laterally the width of cast-in-place seam 6 is determined according to the lap of splice of longitudinally connected reinforcing bar, and one
As take 10~40cm.
It can also be by being laid with lateral stressed reinforcing bar identical with the ratio of reinforcement in the floorings of middle part in laterally cast-in-place seam 6
（It is not shown）, the lateral stressed reinforcing bar is made to form reinforcing bar net form with longitudinally connected reinforcing bar existing for script in laterally cast-in-place seam
Formula further ensures that the longitudinally connected stabilization of floorings.
The present embodiment can rapidly-assembled precast bridge work progress, include the following steps：
S1. prepare using the middle part precast main beam of ultra-high performance concrete material making, middle part floorings, the prefabricated master in edge
Beam and edge floorings, the lateral stressed of the Shear connection key, middle part floorings for protecting middle part precast main beam of adopting an effective measure
Reinforcing bar and longitudinally connected reinforcing bar, the lateral stressed reinforcing bar of edge floorings and longitudinally connected reinforcing bar.
S2. bridge substructure is waited for（Including pile foundation, cushion cap, pier, bent cap etc.）After construction, more S1 steps are lifted
Middle part precast main beam and edge precast main beam installed, take temporary support to ensure the middle part precast main beam and prefabricated master in edge
Stabilization in beam work progress.
S3. floorings in the middle part of polylith are located between the middle part precast main beam in S2 successively, by polylith edge floorings
Above edge precast main beam and edge bridge panel end is set to be crossed in corresponding middle part precast main beam simultaneously.
S4. by the connection type welding or bind by the Shear connection key in the precast main beam of middle part respectively with middle part bridge floor
The lateral stressed reinforcing bar of plate, the longitudinally connected reinforcing bar of middle part floorings effectively connect.
S5. the lateral cast-in-place seam of cleaning and sundries in longitudinal cast-in-place seam region.
S6. it pours ultra-high performance concrete in laterally cast-in-place seam and longitudinal cast-in-place seam and is conserved.
S7. deck paving and the construction of other affiliated facilities.
In wherein step S3, middle part floorings, which are installed into the installation process in the precast main beam of middle part, to be needed to use high-strength mortar
To being smoothed out at the top of the precast main beam of middle part；Edge floorings, which are installed into the installation process in edge precast main beam, to be needed using height
Strength mortar at the top of edge precast main beam to smoothing out, to ensure each floorings not local pressure.
Embodiment 2
As shown in fig. 6, the present embodiment difference from example 1 is that middle part floorings 2 in be equipped with two layers laterally by
Power reinforcing bar 21 and longitudinally connected reinforcing bar 22, wherein one layer of 72 bottom of cross rib/longitudinal rib for being set to waffle-type structure, another layer are set to
71 top of bottom plate, and longitudinally connected reinforcing bar 22 is each provided at 21 inside of lateral stressed reinforcing bar.
Edge floorings 4 are also waffle-type structure identical with middle part floorings 2.
Embodiment 3
As shown in fig. 7, the present embodiment is difference from example 1 is that middle part floorings 2 and edge floorings 4 are length
Square three-dimensional-structure, the plate of middle part floorings and edge floorings on precast bridge length direction are wide（Longitudinal direction i.e. in embodiment 1
Size）Equal, the plate thickness of middle part floorings and edge floorings is equal, and wherein plate is wide and plate thickness ratio is 45~60.
One layer of lateral stressed reinforcing bar and longitudinally connected reinforcing bar are provided only in cuboid-type structure, the lateral stressed reinforcing bar and vertical
The bar-mat reinforcement formed to connection reinforcing bar is located at the bottom of cuboid-type structure.
The middle part floorings and edge floorings of cuboid-type structure are suitable for edge precast main beam and middle part precast main beam
Between, small-pitch situation between the precast main beam of middle part, and cuboid-type structure deck structrue it is prefabricated when template it is simple,
And construction technology is convenient, but its conduct oneself with dignity for the waffle-type structure of embodiment 1 and embodiment 2 it is larger.
Embodiment 4
As shown in figure 8, the present embodiment and embodiment 3 are the difference is that the middle part floorings of cuboid-type structure and side
It is equipped with two layers of lateral stressed reinforcing bar and longitudinally connected reinforcing bar in edge floorings, one layer is set to cuboid-type structural top, one layer
Set on cuboid-type structural base, and longitudinally connected reinforcing bar is each provided on the inside of lateral stressed reinforcing bar.
Embodiment 5
As shown in figure 9, the present embodiment is difference from example 1 is that middle part precast main beam and edge precast main beam
Bottom tensile region arrangement is pretensioned prestressing reinforcing bar.
It is verified through finite element modelling, model test, for the T beams of 40m across footpaths, the precast bridge of the utility model is more common
T beams can mitigate dead load about 40%, and the Shear connection key configured in horizontal and vertical cast-in-place seam and back pouring hole hole can be protected effectively
Demonstrate,prove being stably connected with for each floorings and each precast main beam, in theoretical modeling each precast main beam and each floorings have no apparent sliding and
Dislocation.
Obviously, above-described embodiment is only intended to clearly illustrate the technical solution of the utility model example, and simultaneously
Non- is the restriction to the embodiment of the utility model.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give thoroughly all embodiments
It lifts.All any modification, equivalent and improvement made within the spirit and principle of the present invention etc. should be included in this
Within the protection domain of utility model claims.
Claims (10)
1. one kind can rapidly-assembled precast bridge, which is characterized in that prefabricated including middle part precast bridge module and set on middle part
The edge precast bridge module of bridge module both sides；
Middle part precast bridge module include more respectively in the middle part precast main beam of precast bridge length and width directional spreding and
Polylith is located at the middle part floorings between the precast main beam of middle part, and at least one layer is equipped in the floorings of middle part along precast bridge width
The lateral stressed reinforcing bar of direction setting and the longitudinally connected reinforcing bar perpendicular to lateral stressed reinforcing bar；
Edge precast bridge module includes that the more edge precast main beams being distributed in precast bridge length direction, polylith are set to edge
Edge floorings right over precast main beam, edge floorings are crossed on corresponding middle part close to the end of middle part precast bridge module
It is equipped at least one layer of lateral stressed reinforcing bar along the setting of precast bridge width direction in precast main beam, in edge floorings and hangs down
Directly in the longitudinally connected reinforcing bar of lateral stressed reinforcing bar；
Middle part precast main beam, middle part floorings, edge precast main beam and edge floorings are ultra-high performance concrete structure；
In precast bridge width direction between edge floorings and middle part floorings and between middle part floorings and middle part floorings
It is upper that there is longitudinal cast-in-place seam to be located at the top of the precast main beam of middle part for pouring into a mould ultra-high performance concrete, longitudinal cast-in-place seam；
In precast bridge length direction between edge floorings and edge floorings and between middle part floorings and middle part floorings
It is upper to have lateral cast-in-place seam for pouring into a mould ultra-high performance concrete,；
The bottom tensile region of middle part precast main beam and edge precast main beam is arranged with prestressed strand or deformed bar.
2. according to claim 1 can rapidly-assembled precast bridge, which is characterized in that middle part precast main beam with middle part
Floorings contact surface be embedded with Shear connection key, the lateral stressed reinforcing bar in edge floorings and middle part floorings respectively with
Shear connection key connects.
3. according to claim 1 or 2 can rapidly-assembled precast bridge, which is characterized in that between the floorings of middle part
Longitudinally connected reinforcing bar connects successively.
4. according to claim 1 or 2 can rapidly-assembled precast bridge, which is characterized in that between edge floorings
Longitudinally connected reinforcing bar connects successively.
5. according to claim 1 can rapidly-assembled precast bridge, which is characterized in that middle part floorings and edge bridge floor
Plate is cuboid-type structure, and the plate width of middle part floorings and edge floorings in precast bridge vehicle forward direction is equal, in
The plate thickness of portion's floorings and edge floorings is equal, and the plate is wide and plate thickness ratio is 45~60.
6. according to claim 1 can rapidly-assembled precast bridge, which is characterized in that middle part floorings and edge bridge floor
Plate is waffle-type structure, and the waffle-type structure includes bottom plate and the orthogonal cross rib on bottom plate and longitudinal rib,
Bottom plate thickness is 3~8cm.
7. according to claim 1 can rapidly-assembled precast bridge, which is characterized in that edge precast main beam with edge
It is equipped at least one back pouring hole hole at the contact position of floorings, Shear connection key, edge floorings are embedded in back pouring hole hole
It is equipped with the cast-in-place area of hole, the lateral stressed reinforcing bar in edge floorings and longitudinally connected reinforcing bar in position corresponding with back pouring hole hole
It is continuous state in the cast-in-place area of hole, the Shear connection key in edge precast main beam back pouring hole hole and the transverse direction in edge floorings
Steel bar stress and longitudinally connected reinforcing bar connect, and ultra-high performance concrete has been poured in back pouring hole hole and the cast-in-place area of hole.
8. according to claim 1 can rapidly-assembled precast bridge, which is characterized in that be laid in longitudinal cast-in-place seam
Transverse steel, the transverse steel connect with the lateral stressed reinforcing bar in middle part floorings and/or edge floorings.
9. according to claim 1 can rapidly-assembled precast bridge, which is characterized in that be laterally laid in cast-in-place seam
Lateral stressed reinforcing bar identical with the ratio of reinforcement in the floorings of middle part.
10. according to claim 1 or 9 can rapidly-assembled precast bridge, which is characterized in that the laterally width of cast-in-place seam
Degree is 10~40cm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316120A (en) * | 2018-02-08 | 2018-07-24 | 湖南工业大学 | It can rapidly-assembled precast bridge and its construction method |
| CN109811606A (en) * | 2019-03-26 | 2019-05-28 | 上海市城市建设设计研究总院（集团）有限公司 | The overhead expressway of ring road and its ring road reconstruct method to pin-connected panel up and down |
| CN109853358A (en) * | 2019-01-24 | 2019-06-07 | 西安公路研究院 | A kind of Very Low Clearance precast assembly integration UHPC spill beam bridge and its construction method |
| CN110725193A (en) * | 2019-06-29 | 2020-01-24 | 天津大学 | Full-prefabricated steel pipe concrete space truss-UHPC waffle slab composite beam and construction method |
| CN111576182A (en) * | 2020-04-01 | 2020-08-25 | 广东省建筑设计研究院 | I-shaped truss girder, truss girder bridge and construction method |
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2018
- 2018-02-08 CN CN201820225027.4U patent/CN207973983U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316120A (en) * | 2018-02-08 | 2018-07-24 | 湖南工业大学 | It can rapidly-assembled precast bridge and its construction method |
| CN109853358A (en) * | 2019-01-24 | 2019-06-07 | 西安公路研究院 | A kind of Very Low Clearance precast assembly integration UHPC spill beam bridge and its construction method |
| CN109811606A (en) * | 2019-03-26 | 2019-05-28 | 上海市城市建设设计研究总院（集团）有限公司 | The overhead expressway of ring road and its ring road reconstruct method to pin-connected panel up and down |
| CN109811606B (en) * | 2019-03-26 | 2023-12-08 | 上海市城市建设设计研究总院（集团）有限公司 | Ramp reconstruction method for overhead expressway of assembled up-down ramp |
| CN110725193A (en) * | 2019-06-29 | 2020-01-24 | 天津大学 | Full-prefabricated steel pipe concrete space truss-UHPC waffle slab composite beam and construction method |
| CN111576182A (en) * | 2020-04-01 | 2020-08-25 | 广东省建筑设计研究院 | I-shaped truss girder, truss girder bridge and construction method |
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