CN107299588B - Precast concrete filled steel tubular and reinforced concrete piers - Google Patents
Precast concrete filled steel tubular and reinforced concrete piers Download PDFInfo
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- CN107299588B CN107299588B CN201710524593.5A CN201710524593A CN107299588B CN 107299588 B CN107299588 B CN 107299588B CN 201710524593 A CN201710524593 A CN 201710524593A CN 107299588 B CN107299588 B CN 107299588B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 149
- 239000010959 steel Substances 0.000 title claims abstract description 149
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 102
- 239000011178 precast concrete Substances 0.000 title description 4
- 239000004567 concrete Substances 0.000 claims abstract description 122
- 230000002787 reinforcement Effects 0.000 claims description 37
- 238000005266 casting Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 abstract description 11
- 238000005452 bending Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000009417 prefabrication Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 18
- 239000007924 injection Substances 0.000 description 18
- 230000003014 reinforcing effect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000015271 coagulation Effects 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000002435 tendon Anatomy 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
- 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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of Prefabricated concrete-filled steel tubes and spiced by steel reinforced concrete bridge pier, it includes pier footing, Prefabricated concrete-filled steel tube segment, the interstitial segment and prefabricated reinforced concrete epimerite section of one or more prefabricated reinforced concretes, wherein, the pier footing is fixedly connected with the Prefabricated concrete-filled steel tube segment by means of being set to the bottom anchor bolt that the pier footing is set, the Prefabricated concrete-filled steel tube segment and the prefabricated reinforced concrete interstitial segment, and between multiple prefabricated reinforced concrete interstitial segments, it is fixedly connected between prefabricated reinforced concrete interstitial segment and prefabricated reinforced concrete epimerite section by means of connection unit.Each section modular construction of the present invention is simple, not only can be also convenient for live splicing in order to prefabrication, to improve construction operation speed, field operation intensity can also be effectively reduced.The assembly bridge pier, which removes, has bearing capacity high, outside preferable resistance to compression, bending resistance, shear resistance and good durability, also has many advantages, such as that anti-seismic performance is good.
Description
Technical field
The invention belongs to science of bridge building fields, and in particular to a kind of Prefabricated concrete-filled steel tube and spiced by steel reinforced concrete bridge
Pier.
Background technique
Currently, most of bridge that China is built all is by cast-in-situ steel reinforced concrete abutment, cast-in-place concrete bridge pier, cast-in-place
Concrete slab and precast concrete beam composition.Cast-in-place concrete construction needs take a substantial amount of time, and need many existing
Field operational procedure, these programs can adversely affect the safety and environment of traffic flow, workspace, in particular, in construction ring
Under the restrictions of factors such as border complexity, construction space, weather conditions and environmental protection condition, seriously affect bridge building operations into
Journey.
For interconnection technique, concrete between precast concrete pier stud and basic interconnection technique, precast concrete segment
Stress performance after the connection of native segment and bent cap, and connection, the research of the anti-seismic performance of whole pier stud after especially connecting
It compares less, its application range is made to have also suffered from limitation.
Summary of the invention
(1) technical problems to be solved
In order to solve the above problem of the prior art, the present invention provides a kind of Prefabricated concrete-filled steel tube and armored concrete is spelled
Bridge pier is filled, has many advantages, such as that practical, durability is good, anti-seismic performance is superior, using each section of precast pier in advance, scene
Assembly is accelerated the duration, and can effective protection construction environment.
(2) technical solution
In order to achieve the above object, the main technical schemes that the present invention uses include:
A kind of Prefabricated concrete-filled steel tube and spiced by steel reinforced concrete bridge pier comprising pier footing, Prefabricated concrete-filled steel tube
Segment, one or more prefabricated reinforced concrete interstitial segments and prefabricated reinforced concrete epimerite section, wherein the pier footing
It is fixedly connected with the Prefabricated concrete-filled steel tube segment by means of being set to the bottom anchor bolt that the pier footing is set, the pre-manufactured steel
Pipe concrete segment and the prefabricated reinforced concrete interstitial segment and multiple prefabricated reinforced concrete interstitial segments it
Between, be fixedly connected by means of connection unit between prefabricated reinforced concrete interstitial segment and prefabricated reinforced concrete epimerite section.
As a kind of preferred embodiment of assembled bridge pier as described above, the connection unit include multiple hollow connectors and
The longitudinal reinforcement extended out of connector to the lower end of place prefabricated reinforced concrete interstitial segment, wherein multiple connections
Device is along the Prefabricated concrete-filled steel tube segment or the upper side one-week interval of each prefabricated reinforced concrete interstitial segment
Setting, the connector are embedded in respective concrete segment；The hollow connector includes open upper and lower side, is leaned on
The side surface of nearly upper and lower side is equipped with the injection nozzle crossed out on the outside of the segment, and the injection nozzle is detachable setting, and
It is connected to inside the connector；
The longitudinal reinforcement corresponds to the position of the connector from the lower end of each prefabricated reinforced concrete interstitial segment
Set exposed, the exposed longitudinal reinforcement is corresponding to be inserted into the adjacent connector, and the upper end of the longitudinal reinforcement is protruded into respectively right
Answer at least part in the connector of upper end；
The upper end of the prefabricated reinforced concrete epimerite section is equipped with pre-buried top anchor bolt, the prefabricated reinforced concrete epimerite
The position that the lower end of section corresponds to connector in the prefabricated reinforced concrete interstitial segment is equipped with exposed longitudinal reinforcement, described outer
The longitudinal reinforcement of dew is inserted into corresponding connector, the upper end of the longitudinal reinforcement and prefabricated reinforced concrete top segments upper side
In parallel.
As a kind of preferred embodiment of assembled bridge pier as described above, after the assembly bridge pier splicing, to the hollow company
The injection nozzle injection grouting material for connecing device lower end unloads all described after the grouting material fills the hollow connector
Injection nozzle, and it is tightly connected the injection port of the injection nozzle.
As a kind of preferred embodiment of assembled bridge pier as described above, the connection unit includes connection bolt, junction steel plate
With connection dowel, wherein the connection bolt embedment is in the Prefabricated concrete-filled steel tube segment, the prefabricated reinforced concrete
Between segment and the upper surface of the prefabricated reinforced concrete epimerite section, the junction steel plate is fixed at the precast reinforced coagulation
The lower end of the lower end of native interstitial segment and the prefabricated reinforced concrete epimerite section, the connection dowel is fixedly connected on the company
It connects among the upper surface of steel plate, the upper end of the connection dowel is bent downwardly；The connection spiral shell is corresponded on the junction steel plate
Bolt is equipped with through-hole, corresponds to institute in the lower end of the prefabricated reinforced concrete interstitial segment and the prefabricated reinforced concrete epimerite section
The top for stating through-hole is equipped with the cavity for being used for casting concrete.
As a kind of preferred embodiment of assembled bridge pier as described above, the assembly bridge pier further includes having bent cap, the bent cap
Set on the top of the prefabricated reinforced concrete epimerite section, the two by being embedded in above the prefabricated reinforced concrete epimerite section in advance
Top anchor bolt connected with the preformed hole on the corresponding bent cap, in the top of the preformed hole equipped with being used for casting concrete
Cavity.
As a kind of preferred embodiment of assembled bridge pier as described above, the Prefabricated concrete-filled steel tube segment is poured including centre
There are the steel pipe, basic pading plate and multiple shear connectors, the shear connector of concrete to be both secured to the steel pipe inner wall,
The basis pading plate is set to the steel pipe bottom, and the area of the basis pading plate is greater than the cross-sectional area of the steel pipe,
And the bottom anchor bolt setting connecting hole is corresponded on the basic pading plate except the steel pipe main body projected area.
As a kind of preferred embodiment of assembled bridge pier as described above, the shear connector is peg, the peg
Nail tip is welded on the steel pipe, the peg interlaced arrangement.
As a kind of preferred embodiment of assembled bridge pier as described above, the shear connector is perforated steel plate, the band
Hole steel plate is the strip-form steel plate equipped with multiple equally spaced vias, and the perforated steel plate is fixed in parallel on the steel pipe inner wall.
It is possible to further arrange reinforcing bar in through-hole, to play better connection function.
As a kind of preferred embodiment of assembled bridge pier as described above, the prefabricated reinforced concrete interstitial segment and pre-manufactured steel
Reinforced concrete epimerite section is the interior concrete equipped with multiple longitudinal reinforcements, multiple stirrups, wherein multiple longitudinal reinforcements are close
The concrete edge arranges that multiple stirrups are around the outside for being fixed on all longitudinal reinforcements, edge along one-week interval
The longitudinal reinforcement is arranged in longitudinal gap.
As a kind of preferred embodiment of assembled bridge pier as described above, the Prefabricated concrete-filled steel tube segment and the pre-manufactured steel
Reinforced concrete interstitial segment and the cross section for pushing up the stage are round, rectangular, oval or other shapes.
(3) beneficial effect
The beneficial effects of the present invention are:
Prefabricated concrete-filled steel tube provided by the invention and spiced by steel reinforced concrete bridge pier use above bridge pier column basis
Prefabricated concrete-filled steel tube segment, and pier shaft other parts use the interstitial segment and epimerite section of prefabricated reinforced concrete, are connecting
Place is by pouring or being perfused the company for reinforcing fixing between two contiguous prefabricated steel pipe concrete segments or armored concrete interstitial segment
Intensity is connect, Prefabricated concrete-filled steel tube segment is rationally connect with prefabricated reinforced concrete interstitial segment and epimerite section integral.It is logical
Later the means of cast in situs or perfusion, not only can guarantee the company of adjacent two prefabricated reinforced concrete column segment in this way when the phase connects
Intensity is connect, thereby may be ensured that the total quality of bridge pier, and each section modular construction is simple, it not only can be pre- in order to factory
System, is also convenient for live splicing, to improve construction operation speed, field operation intensity can also be effectively reduced.The assembly bridge pier is except tool
Have that bearing capacity is high, outside preferable resistance to compression, bending resistance, shear resistance and good durability, also has anti-seismic performance good etc. excellent
Point.By prefabricated in advance, scene splicing has that speed of application is fast, do not influence normal traffic, the construction period is short, construction noise is low,
Material stacking place is few, conducive to advantages such as the construction environments that keeps the scene intact.
It is further equipped with shear connector in Prefabricated concrete-filled steel tube segment, steel pipe and concrete are formed into entirety, altogether
Same stress, compatibility of deformation, anti-seismic performance improve.
Detailed description of the invention
Fig. 1 is the longitudinal sectional drawing of the preferred assembled bridge pier overall structure of the present invention one；
Fig. 2 is the structural schematic diagram of Prefabricated concrete-filled steel tube segment in Fig. 1 of the present invention；
Fig. 3 is the cross-sectional view in Fig. 2 at I；
Fig. 4 is the cross-sectional view in Fig. 2 at II；
Fig. 5 is the structural schematic diagram of the prefabricated reinforced concrete interstitial segment in Fig. 1；
Fig. 6 is the cross-sectional view in Fig. 5 at III；
Fig. 7 is the cross-sectional view in Fig. 5 at IV；
Fig. 8 is the structural schematic diagram of a preferred shear connector；
Fig. 9 is the longitudinal sectional drawing of another preferred assembled bridge pier overall structure；
Figure 10 is the structural schematic diagram of prefabricated reinforced concrete interstitial segment in Fig. 9；
Figure 11 is the cross-sectional view in Figure 10 at V；
Figure 12 is the cross-sectional view in Figure 10 at VI；
Figure 13 is the cross-sectional view of prefabricated reinforced concrete top segments upper side in Fig. 9；
Figure 14 is the structural schematic diagram for connecting bolt；
Figure 15 is the structural schematic diagram of perforated steel plate.
[description of symbols]
1: pier footing；
2: Prefabricated concrete-filled steel tube segment；
3: prefabricated reinforced concrete interstitial segment；
4: prefabricated reinforced concrete epimerite section；
5: bottom anchor bolt；
6: steel pipe；
7: basic pading plate；
8: connecting hole；
9: connector；
10: longitudinal reinforcement；
11: injection nozzle；
12: stirrup；
13: bent cap；
14: top anchor bolt；
15: bent cap after-pouring concrete；
16: shear connector；
17: connection bolt；
18: junction steel plate；
19: connection dowel；
20: junction after-pouring concrete；
21: through-hole；
22；Junction after-pouring concrete cavity；
23: nut bolt；
24: bolt cap backing plate；
25: nut backing plate；
26: fastening nut；
27: strip-form steel plate.
Specific embodiment
In order to preferably explain the present invention, in order to understand, with reference to the accompanying drawing, by specific embodiment, to this hair
It is bright to be described in detail.
Embodiment 1
A kind of Prefabricated concrete-filled steel tube and spiced by steel reinforced concrete bridge pier, as shown in Figure 1 comprising be followed successively by from the bottom to top
Pier footing 1, Prefabricated concrete-filled steel tube segment 2, one or more prefabricated reinforced concrete interstitial segments 3 and precast reinforced coagulation
Native epimerite section 4, wherein pier footing 1 and Prefabricated concrete-filled steel tube segment 2 are by means of set on the bottom that the pier footing 1 is set
Anchor bolt 5 is fixedly connected, Prefabricated concrete-filled steel tube segment 2 and prefabricated reinforced concrete interstitial segment 3 and multiple precast reinforced coagulations
Between native interstitial segment 3, between prefabricated reinforced concrete interstitial segment 3 and prefabricated reinforced concrete epimerite section 4 by means of connection
Unit is fixedly connected.
Specifically, as shown in figs 2-4, wherein Fig. 3 and Fig. 4 is to be in cross-sectional structure schematic diagram in I and II in Fig. 2,
Prefabricated concrete-filled steel tube segment 2 includes the steel pipe 6 that centre pours concrete, and 6 bottom of steel pipe is fixed with basic pading plate 7, base
The area of plinth pading plate 7 is greater than the area of steel pipe 6, and corresponds to bottom on the basic pading plate 7 except 6 main body projected area of steel pipe
Anchor bolt 5 is provided with connecting hole 8, and the cross section of Prefabricated concrete-filled steel tube segment 2 is set as round, prefabricated reinforced concrete interstitial segment
3 and the cross section of prefabricated reinforced concrete epimerite section 4 be correspondingly arranged as circle.
Connection unit includes multiple connectors 9 and multiple exposed longitudinal reinforcements 10, specifically, along Prefabricated concrete-filled steel tube
Multiple connectors 9 of 2 upper side one-week interval of segment setting, connector 9 are embedded in Prefabricated concrete-filled steel tube segment 2, lean on
Outer side edges closely along Prefabricated concrete-filled steel tube segment 2 are cavity, the corresponding upper and lower ends of cavity along interval setting, connector 9
The side for stretching out Prefabricated concrete-filled steel tube segment 2 is equipped with detachable injection nozzle 11, and injection nozzle 11 is connected to the cavity of connector 9, can
Disassembly injection nozzle can be connected through a screw thread setting.
As shown in Figure 5-Figure 7, corresponding to be equipped in the position that prefabricated reinforced concrete interstitial segment 3 is correspondingly connected with device 9
Longitudinal reinforcement 10；The lower end that prefabricated reinforced concrete interstitial segment 3 is stretched out in 10 end of longitudinal reinforcement forms exposed longitudinal reinforcement,
The exposed longitudinal reinforcement can just protrude into the cavity of connector 9 of adjacent segment, prefabricated reinforced concrete interstitial segment 3
The corresponding position that upper end corresponds to terminal adapter on Prefabricated concrete-filled steel tube segment 2 is equipped with connector 9, the longitudinal reinforcement in this segment
10 upper end a part is inserted into the connector 9 setting, then prefabricated reinforced concrete interstitial segment 3 was close to concrete edge along one week
The multiple longitudinal reinforcements 10 of arranged for interval, lower end a part of longitudinal reinforcement 10 is beyond under prefabricated reinforced concrete interstitial segment 3
Surface a part, a part of the connection unit as next section of segment of connection, in addition, in order to which fastening structure is in longitudinal reinforcement 10
Periphery be fixed within one week multiple stirrups 12, stirrup 12 is around the outside for being fixed on all longitudinal reinforcements 10, reinforcing bar along longitudinal direction
10 arrange in longitudinal gap.
Prefabricated reinforced concrete epimerite section 4 is different from prefabricated reinforced concrete interstitial segment 3, and the upper end is not provided with company
Device 9 is connect, but is embedded with top anchor bolt, top anchor bolt is arranged close to the center of prefabricated reinforced concrete epimerite section 4, and longitudinal steel
The upper end of muscle 10 is parallel with the upper end of prefabricated reinforced concrete epimerite section 4.
When carrying out splicing bridge pier, the two adjacent liftings of prefabricated reinforced concrete interstitial segment 3 are seated to prefabricated steel pipe and are mixed
The top of solidifying soil segment 2, exposed longitudinal reinforcement 10 is just inserted into the connector 9 of Prefabricated concrete-filled steel tube segment 2, from lower end
Injection nozzle 11 inject dedicated high-strength, shrinkage-free grouting material, such as can be used JG/T 408-2013 reinforcing bar sleeve for connection grouting
Material, grouting material, which is filled to flow out from the injection nozzle 11 of upper end after the cavity of connector 9, stops grouting, later 11 envelope of removal injection nozzle
Close injection port.
It is additionally provided with bent cap 13 in the upper end of prefabricated reinforced concrete epimerite section 4, precast reinforced coagulation is corresponded on bent cap 13
The position of the top anchor bolt of native 4 upper end of epimerite section is reserved with through-hole, and the top of through-hole is reserved with bent cap after-pouring concrete cavity,
After being bolted for bent cap 13, casting concrete forms bent cap after-pouring coagulation in bent cap after-pouring concrete cavity
Soil 15, bent cap after-pouring concrete 15 reinforce the connection of bent cap 13 and prefabricated reinforced concrete interstitial segment 3, and to top anchor spiral shell
Bolt exposed parts play the role of closed.
In addition, the inner wall of steel pipe 6 is equipped with multiple shear connectors 16 in Prefabricated concrete-filled steel tube segment, shearing connects
Fitting 16 can greatly reinforce the bonding strength of steel pipe 6 Yu concrete, improve the whole stress-bearing capability of steel pipe concrete segment.Shearing
Connector 16 can be set as peg, as shown in figure 8, the nail tip of peg is welded on steel pipe 6, multiple pegs are interlaced arrangements.
The production method of Prefabricated concrete-filled steel tube and each component of spiced by steel reinforced concrete bridge pier in the present embodiment, such as Fig. 1
It is shown, include the following steps:
(1) it makes steel pipe concrete segment: making steel pipe 6 by design requirement, shear connector 16 is welded in steel pipe 6,
And steel pipe 6 is welded on basic pading plate 7, fixed connection device 9, the casting concrete in steel pipe 6, form concrete filled steel tube section
Section；
(2) armored concrete interstitial segment is made: production template and framework of steel reinforcement (longitudinal reinforcement 10 and stirrup 12), it is fixed
Connector 9, the casting concrete in template form armored concrete interstitial segment；
(3) armored concrete epimerite section is made: production template, framework of steel reinforcement (longitudinal reinforcement 10 and stirrup 12), fixed top
Anchor bolt, the casting concrete in template form armored concrete epimerite section；
(4) on production pier footing 1, pre- buried end anchor bolt；
(5) bent cap 13 is made, junction after-pouring concrete cavity and through-hole are set.
The installation of above-mentioned each component:
(1) steel pipe concrete segment 2 is fixed on pier footing 1 by pre- buried end anchor bolt 5；
(2) by stretching out in the connector 9 of reinforcing bar insertion steel pipe concrete segment 2 in armored concrete interstitial segment 3；
(3) the stretching reinforcing bar being placed in the armored concrete interstitial segment 3 of top is inserted into adjacent connection placed below
In device 9；
(4) the stretching reinforcing bar being placed in the armored concrete epimerite section 4 of top is inserted into adjacent reinforcing bar placed below
In the connector 9 of concrete interstitial segment 3；
(5) bent cap 13 is placed in armored concrete epimerite section 4, the pre-buried top anchor bolt 14 of armored concrete epimerite section 4
Across the through-hole of bent cap 13, it is secured with nuts；
(6) by injection nozzle 11, grouting material is injected from bottom to top into connector 9；
(7) removal injection nozzle 11, with concrete enclosing injection port；
(8) into bent cap 13, casting concrete forms bent cap after-pouring concrete 15 in bent cap after-pouring concrete cavity.
Embodiment 2
The present embodiment is that on the basis of embodiment 1, such as figure is different from embodiment 1, Prefabricated concrete-filled steel tube segment
2, the cross section of prefabricated reinforced concrete interstitial segment 3 and prefabricated reinforced concrete epimerite section 4 is rectangular, i.e., prefabricated steel pipe is mixed
Steel pipe in solidifying soil segment 2 is also rectangular setting, can be set to other shapes as needed certainly.
Connection unit in the present embodiment is different from embodiment 1, as shown in figure 9, its connection unit includes connection bolt
17, junction steel plate 18 and connection dowel 19.Connection bolt 17 is the top being embedded in the segment of lower section, between segment edge one week
Every setting, junction steel plate 18 is the lower end being set in the segment of top, and bolt 17 is correspondingly connected on junction steel plate 18 and is equipped with use
It is reserved with junction after-pouring concrete cavity above the through-hole of connection, through-hole, to form junction after-pouring for pouring
Concrete 20, to be tightly connected the exposed parts of bolt and reinforce connection；Connection dowel 19 is equipped among junction steel plate 18, even
The upper end for connecing dowel 19 is set as reclinate crotch, reclinate hook solid for enhance concrete and junction steel plate 18 it
Between anchoring, improve the drag of link position.
As shown in Figure 10-Figure 12, prefabricated reinforced concrete interstitial segment 3 is that lower end is equipped with junction steel plate 18, junction steel plate
It is correspondingly connected with bolt 17 on 18 and is equipped with the through-hole 21 for being used for connection, the top of through-hole is equipped with junction after-pouring concrete cavity
22, the upper surface centre of junction steel plate 18 is equipped with connection dowel 19, and the lower end of connection dowel 19 is fixedly connected on junction steel plate 18,
The upper end of connection dowel 19 is bent downwardly；The edge of prefabricated reinforced concrete interstitial segment 3 is also equipped at intervals with longitudinal reinforcement in one week
10, it is fixed with stirrup 12 around the peripheries of all longitudinal reinforcements 10, is disposed with along the longitudinal reinforcement 10 in longitudinal gap more
A stirrup 12, the upper end of prefabricated reinforced concrete interstitial segment 3 is embedded with connection bolt 17, for passing through nut with upper segment
Two adjacent segments are fixed.
Connection bolt 17 is embedded with along outer edge one-week interval in Prefabricated concrete-filled steel tube segments upper side.
As shown in figure 13, prefabricated reinforced concrete epimerite section is different from prefabricated reinforced concrete interstitial segment, thereon
It holds pre-buried 14 position of top anchor bolt to be different from connection bolt 17 to be arranged, top anchor bolt 14 is located at prefabricated reinforced concrete epimerite section
The center setting of upper surface.
As shown in figure 14, connection bolt and top anchor bolt can be set as including nut bolt 23, bolt cap backing plate 24, nut pad
Plate 25 and fastening nut 26, wherein nut bolt 23, bolt cap backing plate 24 install the segment of top for being embedded in concrete in advance
Afterwards, nut backing plate 25 and fastening nut 26 are placed in nut bolt 23 and are fastened.
The production method of Prefabricated concrete-filled steel tube and each component of spiced by steel reinforced concrete bridge pier in the present embodiment, such as Fig. 9
It is shown, different from the step in embodiment 1:
(1) make steel pipe concrete segment 2: fixed connection device 9 becomes being fixedly connected with anchor bolt 17, and other operations are constant；
(2) make armored concrete interstitial segment: junction steel plate 18 opens up through-hole, is welded to connect dowel 19, makes template
With framework of steel reinforcement (longitudinal reinforcement 10 and stirrup), junction after-pouring concrete is arranged in fixing connection steel plate 18, connection bolt 17
Cavity, the casting concrete in template form prefabricated reinforced concrete interstitial segment 3；
(3) make armored concrete epimerite section: junction steel plate 18 opens up through-hole, is welded to connect dowel 19, makes template, steel
Tendons skeleton (longitudinal reinforcement 10 and stirrup), fixed top anchor bolt 14, is arranged junction after-pouring concrete cavity, pours in template
Concrete is built, prefabricated reinforced concrete epimerite section 4 is formed.
Component mounting step is as follows:
(1) Prefabricated concrete-filled steel tube segment 2 is fixed on pier footing 1 by pre- buried end anchor bolt 5；
(2) prefabricated reinforced concrete interstitial segment 3 is put on Prefabricated concrete-filled steel tube segment 2, Prefabricated concrete-filled steel tube
Connection bolt 17 on segment 2 penetrates the reserved through-hole of junction steel plate 18 in prefabricated reinforced concrete interstitial segment 3, and with tightly
Gu nut is fixed；
(3) prefabricated reinforced concrete interstitial segment 3 is put on another prefabricated reinforced concrete interstitial segment 3, pre-manufactured steel
Connection bolt 17 on reinforced concrete interstitial segment 3 penetrates the reserved of junction steel plate 18 in adjacent armored concrete interstitial segment
Through-hole, and fixed with nut backing plate and fastening nut；
(4) prefabricated reinforced concrete epimerite section 4 is put into the top of prefabricated reinforced concrete interstitial segment 3, passes through nut
The two is fixed,
(5) bent cap 13 is placed in prefabricated reinforced concrete epimerite section 4, it is pre-buried in prefabricated reinforced concrete epimerite section 4
The reserved through-hole that anchor bolt passes through bent cap 13 is pushed up, is fixed with nut backing plate and fastening nut；
(6) junction after-pouring concrete 20 is formed to junction after-pouring concrete cavity casting concrete；
(7) into bent cap after-pouring concrete cavity, casting concrete forms bent cap after-pouring concrete 15, prefabricated steel pipe
The splicing of concrete and rebar concrete assembly bridge pier is completed.
Embodiment 3
The present embodiment is set as perforated steel plate on the basis of embodiment 1, by shear connector 16, as shown in figure 15, with holes
Steel plate is that strip-form steel plate 27 is conducive to enhancing shear connector 16 and mixes equipped with equidistant through-hole 21, being provided with for through-hole is spaced
Connection between solidifying soil, improve work together, the ability of compatibility of deformation, perforated steel plate is welded in the inner wall of steel pipe in parallel, and
Arranged for interval on steel pipe inner wall.Further, it is possible to reinforcing bar be arranged in through-hole, to play better connection function, along steel
Reinforcing bar is formed around steel pipe inner wall or outer wall through there is reinforcing bar in the through-hole of the perforated steel plate of one week the same horizontal position in pipe
One circle, reinforcing bar is solderable in through-holes, further reinforces the connection of steel pipe and concrete.
The above described is only a preferred embodiment of the present invention, being not the limitation for doing other forms to the present invention, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (7)
1. a kind of Prefabricated concrete-filled steel tube and spiced by steel reinforced concrete bridge pier, which is characterized in that it includes pier footing, pre-manufactured steel
Pipe concrete segment, one or more prefabricated reinforced concrete interstitial segments and prefabricated reinforced concrete epimerite section, wherein described
Pier footing is fixedly connected with the Prefabricated concrete-filled steel tube segment by means of being set to the bottom anchor bolt that the pier footing is set, institute
It states among Prefabricated concrete-filled steel tube segment and the prefabricated reinforced concrete interstitial segment and multiple prefabricated reinforced concretes
Connect between segment, between prefabricated reinforced concrete interstitial segment and prefabricated reinforced concrete epimerite section by means of connection unit is fixed
It connects；
The connection unit includes connection bolt, junction steel plate and connection dowel, wherein the connection bolt embedment is in described pre-
The upper table of steel pipe concrete segment processed, the prefabricated reinforced concrete interstitial segment and the prefabricated reinforced concrete epimerite section
Face, the junction steel plate are fixed at the prefabricated reinforced concrete interstitial segment and the prefabricated reinforced concrete epimerite section
The lower end of lower end, the connection dowel is fixedly connected among the upper surface of the junction steel plate, the upper end of the connection dowel
It is bent downwardly；The connection bolt is corresponded on the junction steel plate equipped with through-hole, in the prefabricated reinforced concrete middle node
The top that the lower end of section and the prefabricated reinforced concrete epimerite section corresponds to the through-hole is equipped with the cavity for casting concrete.
2. assembly bridge pier as described in claim 1, which is characterized in that the assembly bridge pier further includes having bent cap, the bent cap
Set on the top of the prefabricated reinforced concrete epimerite section, the two by being embedded in above the prefabricated reinforced concrete epimerite section in advance
Top anchor bolt connected with the preformed hole on the corresponding bent cap, in the top of the preformed hole equipped with being used for casting concrete
Cavity.
3. assembly bridge pier as described in claim 1, which is characterized in that the Prefabricated concrete-filled steel tube segment is poured including centre
There are the steel pipe, basic pading plate and multiple shear connectors, the shear connector of concrete to be both secured to the steel pipe inner wall,
The basis pading plate is set to the steel pipe bottom, and the area of the basis pading plate is greater than the cross-sectional area of the steel pipe,
And the bottom anchor bolt setting connecting hole is corresponded on the basic pading plate except the steel pipe main body projected area.
4. assembly bridge pier as claimed in claim 3, which is characterized in that the shear connector is peg, the peg
Nail tip is welded on the steel pipe, the peg interlaced arrangement.
5. assembly bridge pier as claimed in claim 3, which is characterized in that the shear connector is perforated steel plate, the band
Hole steel plate is the strip-form steel plate equipped with multiple equally spaced vias, and the perforated steel plate is fixed in parallel on the steel pipe inner wall.
6. assembly bridge pier as described in claim 1, which is characterized in that the prefabricated reinforced concrete interstitial segment and pre-manufactured steel
Reinforced concrete epimerite section is the interior concrete equipped with multiple longitudinal reinforcements, multiple stirrups, wherein multiple longitudinal reinforcements are close
The concrete edge arranges that multiple stirrups are around the outside for being fixed on all longitudinal reinforcements, edge along one-week interval
The longitudinal reinforcement is arranged in longitudinal gap.
7. such as assembled bridge pier of any of claims 1-6, which is characterized in that the Prefabricated concrete-filled steel tube segment and
The cross section of the prefabricated reinforced concrete interstitial segment and epimerite section is round, rectangular, oval or other shapes.
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| CN201710524593.5A CN107299588B (en) | 2017-06-30 | 2017-06-30 | Precast concrete filled steel tubular and reinforced concrete piers |
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| CN201710524593.5A CN107299588B (en) | 2017-06-30 | 2017-06-30 | Precast concrete filled steel tubular and reinforced concrete piers |
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| CN107299588A CN107299588A (en) | 2017-10-27 |
| CN107299588B true CN107299588B (en) | 2019-02-12 |
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| CN114592436B (en) * | 2022-03-18 | 2023-05-12 | 四川省公路规划勘察设计研究院有限公司 | Pier capping beam lower support system and construction method thereof |
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