CN107130513A - A kind of composite steel tube concrete folding bridge pier - Google Patents
A kind of composite steel tube concrete folding bridge pier Download PDFInfo
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- CN107130513A CN107130513A CN201710525520.8A CN201710525520A CN107130513A CN 107130513 A CN107130513 A CN 107130513A CN 201710525520 A CN201710525520 A CN 201710525520A CN 107130513 A CN107130513 A CN 107130513A
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- steel pipe
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/268—Composite concrete-metal
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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 composite steel tube concrete folding bridge pier, it includes pier footing, adjacent reinforced concrete bodies, steel pipe and multiple shear connectors, wherein, the adjacent reinforced concrete bodies and the steel pipe are fixed on the pier footing, the adjacent reinforced concrete bodies surround the steel pipe and set, the interior outer surface of the steel pipe is alternately fixed on inside and outside multiple shear connectors and with internal or external prominent protuberance from from the interior outer surface to the steel pipe, concrete is marked with the steel pipe.Steel pipe, steel pipe inner concrete and peripheral ordinary reinforced concrete are connected to form entirety by the overlapping bridge pier with shear connector, common stress, compatible deformation；There is superior small sectional dimension, high capacity, anti-seismic performance, resistance to corrosion and apyrous are strong, save material.
Description
Technical field
The present invention relates to science of bridge building field, and in particular to a kind of composite steel tube concrete folding bridge pier.
Background technology
The appearance of the engineerings such as development and Longspan Bridge and extraordinary bridge with science of bridge building, traditional regular reinforcement is mixed
Solidifying soil has not adapted to its development, thus, promotes high-strength concrete, super high strength concrete and occurs with developing, in order that high
Reinforced concrete can obtain more preferable, wider application, in Practical Project, by limiting its axial compression ratio or taking increase stirrup
Method come the shortcoming that overcomes high-strength concrete to be enbrittled, so as to cause, compression member sectional dimension is big, waste steel,
And it is unfavorable for promoting the use of for super high strength concrete.
Such issues that in order to solve, it is proposed that utilize steel tube confinement high-strength concrete, i.e. form high strength concrete filled steel tube knot
Structure (component), by steel tube confinement high-strength concrete, improves the fragility characteristic of high-strength concrete, improve the ductility of component with
Energy dissipation capacity.Meanwhile, can be outside high strength concrete filled steel tube in order to overcome the shortcoming of outer steel pipe corrosion resistance and fire resistance difference
Enclose and pour ordinary reinforced concrete, form a kind of high strength concrete filled steel tube iterative structure of peripheral armored concrete.It is this in list
Simply pouring armored concrete formation laminated structure member on the outside of limb steel pipe concrete, such as application publication number is CN
104562922A patent application discloses the antidetonation bridge pier of local embedding steel core concrete column, and this structural-load-carrying capacity is relative
Than relatively low, and it cannot be guaranteed that concrete filled steel tube and the common stress of peripheral concrete and compatibility of deformation, it makees in large scale structure
It is restricted for the use of compression member.
At present, China is in mass transportation infrastructure construction period, it is also very desirable to which sectional dimension of members is small, carrying
The superior new construction of power height, good endurance, anti-seismic performance, researchs and develops a kind of more rational steel of stress performance-mixed composite junction
Structure is very necessary.
The content of the invention
(1) technical problem to be solved
In order to solve the above mentioned problem of prior art, the present invention provides a kind of composite steel tube concrete folding bridge pier, and it has
Have the advantages that high capacity, anti-seismic performance be good, superior durability, steel pipe, steel pipe inner concrete and peripheral coagulation is effectively ensured in it
Soil being capable of stress and compatibility of deformation jointly.
(2) technical scheme
In order to achieve the above object, the main technical schemes that the present invention is used include：
A kind of composite steel tube concrete folding bridge pier, including pier footing, adjacent reinforced concrete bodies, steel pipe and multiple shearings
Connector, wherein, the adjacent reinforced concrete bodies and steel pipe are fixed on the pier footing, the adjacent reinforced concrete bodies bag
Enclose and set on the outside of the steel pipe, be alternately fixed on the interior outer surface of the steel pipe inside and outside multiple shear connectors and have
Have in the internal or external prominent protuberance from the interior outer surface to the steel pipe, the steel pipe and be marked with concrete.
As a kind of preferred scheme of overlapping bridge pier as described above, the steel pipe is set to two or more, the steel pipe it
Between be fixedly connected using steel plate strip.
As a kind of preferred scheme of overlapping bridge pier as described above, the shear connector is peg or steel plate with holes, its
In, the steel plate with holes is the strip-form steel plate with multiple equally spaced vias.It is possible to further arrange steel in through hole
Muscle, to play more preferable connection function.
As a kind of preferred scheme of overlapping bridge pier as described above, bottom steel is provided between the pier footing and the steel pipe
Plate, the bottom steel plate is fixedly connected with the steel pipe, and the bottom steel plate is fixedly connected with the pier footing using bottom anchor bolt.
It is used as a kind of preferred scheme of overlapping bridge pier as described above, in the steel pipe, the pier footing, the bottom steel
Be provided with bottom anchor reinforcing bar between plate and the steel pipe inner concrete three, the lower end of the bottom anchor reinforcing bar be located in pier footing and to
Upper bending, the upper end of the bottom anchor reinforcing bar is located in the steel pipe inner concrete.
As a kind of preferred scheme of overlapping bridge pier as described above, an end part for the steel pipe is located at the bridge pier base
In plinth, the end of the steel pipe is welded with base steel plates, and the base steel plates bottom is welded with steel pipe bottom anchor vertically
Muscle, the steel pipe bottom dowel lower end is located in the pier footing and is bent upwards, a part of position in end of the longitudinal reinforcement
In the pier footing.
As a kind of preferred scheme of overlapping bridge pier as described above, provided with connection steel in the concrete on the steel pipe top
Muscle, the lower end of the connection reinforcing bar is located in the steel pipe inner concrete, and the upper end of the connection reinforcing bar is higher than the steel pipe
Top is simultaneously bent downwardly setting.
As a kind of preferred scheme of overlapping bridge pier as described above, in addition to bent cap, the bent cap is mixed located at the reinforcing bar
Solidifying soil main body and the steel pipe top, a top part for the steel pipe are stretched into the bent cap.
As a kind of preferred scheme of overlapping bridge pier as described above, it is provided between the bent cap and the steel pipe inner concrete
Reinforcing bar is connected, the upper end of the connection reinforcing bar is located in the bent cap and is bent downwardly, the lower end of the connection reinforcing bar is located at institute
State in steel pipe inner concrete.
As a kind of preferred scheme of overlapping bridge pier as described above, the adjacent reinforced concrete bodies are included in normal concrete
Centre is provided with multiple longitudinal reinforcements and multiple stirrups, wherein, multiple longitudinal reinforcements are along the peripheral one-week interval of the steel pipe
Arrangement, the upper end of the longitudinal reinforcement is higher than the top of the steel pipe, and the upper end of the longitudinal reinforcement is bent downwardly, the stirrup
Respectively around the outside for being fixed on all longitudinal reinforcements, along the longitudinal reinforcement in longitudinally spaced arrangement.
As a kind of preferred scheme of overlapping bridge pier as described above, the cross sections of the adjacent reinforced concrete bodies for it is square,
Circular, ellipse or centre are square, and two sides are the structure and other shapes of circular arc.
(3) beneficial effect
The beneficial effects of the invention are as follows：The composite steel tube concrete folding bridge pier that the present invention is provided, will with shear connector
Steel pipe, steel pipe inner concrete and peripheral ordinary reinforced concrete connect to form entirety, and common stress, compatible deformation further lead to
Steel plate strip is crossed to connect to form a kind of composite bearing by two or more steel pipes, steel pipe inner concrete and ordinary reinforced concrete
Component, with sectional dimension is small, high capacity, superior anti-seismic performance, resistance to corrosion and apyrous are strong, it is excellent to save material etc.
Point, which solves casting concrete in single steel pipe in the prior art, it is impossible to ensure steel pipe, steel pipe inner concrete and peripheral coagulation
The problem of native common technical deficiency such as stress and compatibility of deformation.
Brief description of the drawings
Fig. 1 is the preferred structural representation for overlapping bridge pier of the present invention one；
Fig. 2 is the structural representation of a preferred shear connector of the invention；
Fig. 3 is the top view of a preferred pier footing 8 of the invention；
Fig. 4 is the cross-sectional view of a preferred adjacent reinforced concrete bodies of the invention；
Fig. 5 is the structural representation of another preferred shear connector of the present invention；
Strip-form steel plate connections and the structural representation of fastener for connection of the Fig. 6 for the present invention；Fig. 7 is another preferably for the present invention
The cross-sectional view of adjacent reinforced concrete bodies；Fig. 8 is the vertical section structure schematic diagram of another preferred pier footing of the present invention；
Fig. 9 is the overlooking the structure diagram of pier footing in Fig. 8；
Figure 10 is another preferred structural representation for overlapping bridge pier of the present invention.
【Description of reference numerals】
1：Steel pipe；
2：Concrete；
3：Shear connector；
4：Steel plate strip；
5：Bottom anchor bolt；
6：Connect reinforcing bar；
7：Bottom anchor reinforcing bar；
8：Pier footing；
9：Bottom steel plate；
10：Longitudinal reinforcement；
11：Stirrup；
12：Bent cap；
13：Normal concrete；
14：Strip-form steel plate；
15：Through hole；
16：Basic steel pipe；
17：Base steel plates；
18：Steel pipe bottom dowel；
19：Reinforcement foundation.
Embodiment
In order to preferably explain the present invention, in order to understand, below in conjunction with the accompanying drawings, by embodiment, to this hair
It is bright to be described in detail.
Embodiment 1
As shown in figure 1, a kind of composite steel tube concrete folding bridge pier, including pier footing 8, adjacent reinforced concrete bodies, steel
Pipe 1, multiple shear connectors 3, wherein, adjacent reinforced concrete bodies and steel pipe 1 are fixed on pier footing 8, armored concrete master
Body surrounds steel pipe 1 and set, and is alternately fixed on the interior outer surface of steel pipe 1 inside and outside multiple shear connectors 3, and the company of shearing
There is fitting the outer surface out of steel pipe, to the internal or external prominent protuberance of steel pipe, to be marked with concrete 2 in steel pipe 1.Adopt
The anti-earthquake ductility and energy dissipation capacity of concrete with confined concrete, can be improved with steel pipe, change concrete stress performance (unidirectionally by
Power switchs to three received strength), improve bearing capacity.Be equipped with shear connector in the interior outside of steel pipe, shear connector can make steel pipe,
Steel pipe inner concrete and the common stress of peripheral concrete, compatibility of deformation.Adjacent reinforced concrete bodies are effectively increased the stability of steel pipe,
Improve that steel pipe is anticorrosive and fire-resistance capacity.The concrete poured in steel pipe 1 preferably high-strength concrete, high-strength concrete refers to intensity
Grade is the concrete of C60 and its above, its high capacity, with preferable anti-seismic performance.
Further, it is considered to which overlapping bridge pier needs to meet the requirement of performance, and the limitation of steel tube section size, can set double
The concrete filled steel tube joint of limb steel pipe or many limb steel pipes, i.e., be set to two or more by steel pipe, steel plate strip used between steel pipe
It is fixedly connected, steel pipe longitudinally can be by being welded to connect, to meet design length requirement.As in Fig. 1, used between two steel pipes 1
Steel plate strip 4 is fixedly connected, it is ensured that the construction positioning of double steel pipe 1, stress is coordinated between making steel pipe 1.
Specifically, shear connector 3 can be peg, as shown in Fig. 2 being welded on steel pipe 1；Peg is inside and outside steel pipe 1
It is arranged for interval on side surface, and outside is interlaced arrangement inside.Set peg can increase the contact area with concrete, increase
The connection of strong steel pipe and concrete, improves cooperation ability, it can be to be set perpendicular to steel pipe that shear connector 3, which is,.
Pier footing 8 is reinforced concrete structure, can be set above Extended chemotherapy or pile foundation or pile foundation
The cushion cap put.
Bottom steel plate 9 is additionally provided between pier footing 8 and steel pipe 1, steel pipe 1 is welded on bottom steel plate 9, bottom steel plate 9 and bridge pier
Basis 8 is fixedly connected using bottom anchor bolt 5, and bottom anchor bolt 5 is to be symmetrical arranged on pier footing 8, the top view of pier footing 8
As shown in Figure 3.When such as pier footing 8 is square, the surrounding kept to the side on pier footing 8 is symmetrical arranged.In order to further fixed
Bottom steel plate 9, the junction between pier footing 8, bottom steel plate 9 and the inner concrete three of steel pipe 1, the bottom provided with vertical direction
Anchor reinforcing bar 7, the upper end of bottom anchor reinforcing bar 7 is located in the steel pipe inner concrete, and the lower end of bottom anchor reinforcing bar 7 is located in pier footing simultaneously
The crotch-shaped being bent upwards is set to, the setting of crotch enhances the anchor between bottom anchor reinforcing bar 7 and concrete i.e. pier footing 8
Gu, improve the drag of link position.Provided with connection reinforcing bar in the concrete on steel pipe top, the lower end of connection reinforcing bar is located at steel pipe
In inner concrete, the upper end of connection reinforcing bar is higher than the top of steel pipe and is bent downwardly.It is directly used in above the overlapping bridge pier
When pouring bridge floor, the upper end of connection reinforcing bar is stretched into bridge floor.The upper end of connection reinforcing bar is set to reclinate hook solid, is turned under
Bent hook solid is used to strengthen the anchoring between connection reinforcing bar 6 and bridge floor, improves the drag of link position.
As shown in figure 1, bent cap 12 can be additionally provided with above-mentioned overlapping bridge pier, bent cap 12 located at adjacent reinforced concrete bodies and
The top of steel pipe, for firm coupling part, a top part for steel pipe 1 is stretched into bent cap 12.Reinforcing bar is provided with bent cap 12
Frame, in the junction of bent cap 12 and steel pipe 1, provided with connection reinforcing bar 6 in steel pipe 1, the upper end of connection reinforcing bar 6 is located in bent cap 12
And reclinate hook solid is set to, the lower end of connection reinforcing bar 6 is located in steel pipe inner concrete；Reclinate hook solid is used for
Enhancing connection reinforcing bar 6 and concrete are the anchoring between bent cap 12, improve the drag of link position.
Adjacent reinforced concrete bodies, which are included in the middle of normal concrete, is provided with multiple longitudinal reinforcements and multiple stirrups, wherein,
As shown in figure 4, multiple longitudinal reinforcements 10 arrange that multiple stirrups 11 are all around being fixed on respectively along the peripheral one-week interval of steel pipe 1
The outside of longitudinal reinforcement 10, along longitudinal reinforcement arranged for interval in a longitudinal direction, interval is set to equidistant interval.Longitudinal reinforcement
10 are directly welded on bottom steel plate 9, and bottom steel plate 9 is connected by bottom anchor bolt 5 with bridge foundation 8 again.Adjacent reinforced concrete bodies
Cross-sectional structure can be set as needed, it is necessary to first set the mould of adjacent reinforced concrete bodies during making, mould is fixed on vertical
To the outside of reinforcing bar and stirrup, normal concrete 13 is poured into mould.As needed, the cross section of adjacent reinforced concrete bodies can
For square circular or oval or other shapes.
In order to stablize the company between bent cap 12 and the main body i.e. adjacent reinforced concrete bodies and steel pipe 1 and bent cap 12 that overlap bridge pier
Connect, by the top part embedment bent cap 12 of steel pipe 1, the length of longitudinal reinforcement 10 is higher than the top of steel pipe 1, and longitudinal reinforcement
10 upper end is provided with reclinate crotch and stretches into bent cap 12, is used to strengthen longitudinal reinforcement 10 provided with reclinate crotch
It is the anchoring between bent cap 12 with concrete, improves the drag of link position., can be in bent cap for the stable structure for strengthening bent cap
In provided with multiple longitudinal reinforcements and along the framework of steel reinforcement of longitudinal reinforcement arranged for interval multiple stirrups formation in a longitudinal direction.
Next, illustrating the making and installation of the composite steel tube concrete folding bridge pier of the present invention with reference to accompanying drawing 1：
(1) steel pipe is made by design requirement, shear connector 3 is welded in the interior outer surface of two steel pipes 1；
(2) the pre- buried end anchor bolt 5 on pier footing 8, while being first embedded with bottom anchor reinforcing bar 7；
(3) two steel pipes 1 and longitudinal reinforcement 10 are welded on bottom steel plate 9, bottom steel plate 9 is provided with and the phase of bottom anchor reinforcing bar 7
The through hole of correspondence position；
(4) the bottom steel plate 9 with two steel pipes 1 and longitudinal reinforcement 10 is pressed into bottom anchor bolt 5 and the pre-buried phase of bottom anchor reinforcing bar 7
Position of sound production is answered on pier footing 8；
(5) steel plate strip 4 is respectively welded between two steel pipes 1 at a certain distance；
(6) multiple stirrups 11 are made, and single stirrup 11 is fixed on longitudinal reinforcement 10, multiple stirrups 11 are along vertical
To the longitudinal arrangement of reinforcing bar 10；
(7) concrete blinding is made in the periphery of two steel pipes 1；The injection high-strength concrete 12 in two steel pipes 1；Two
The individual upper end internal reservation connection reinforcing bar 6 of steel pipe 1；
(8) in the periphery of two steel pipes 1, normal concrete 13 is poured in made concrete blinding in step (7)；
(9) arrangement bent cap framework of steel reinforcement (i.e. provided with longitudinal reinforcement and it is multiple around longitudinal reinforcement stirrup), lid
Concrete blinding is made at the position of beam, casting concrete forms bent cap 4, and overlapping bridge pier completes.
The composite steel tube concrete folding bridge pier inventive principle of the present invention is the loading characteristic by considering bridge pier, in complexity
Or two and above steel pipe of setting at stress point are concentrated, two multiple or multiple fastener for connection are got up using steel plate strip, make each
Steel pipe co-ordination during construction, use.Using steel tube confined concrete, the big shortcoming of Brittleness of Concrete is improved, is carried
Its high ductile performance and energy dissipation capacity, the shortcoming of steel pipe resistance to corrosion difference and fire resistance difference is improved with peripheral concrete,
Steel pipe, steel pipe inner concrete and peripheral ordinary reinforced concrete are connected to form entirety with shear connector, common stress, coordination
Deformation.
Embodiment 2
The present embodiment is that on the basis of embodiment 1, shear connector 3 is set into steel plate with holes, and steel plate with holes is band
Shape steel plate 14, as shown in figure 5, strip-form steel plate 14 is provided with the equidistant through hole 15 in interval.Being provided with for through hole is cut beneficial to enhancing
Connection between power connector and concrete, raising cooperation, the ability of compatibility of deformation, strip-form steel plate 14 is parallel to be welded in
Steel pipe 1 it is inside and outside, as shown in fig. 6, and interior outside spacers arrangement.Further, it is possible to reinforcing bar be arranged in through hole, to play
More preferable connection function, specifically, in the through hole of the steel plate with holes of the same level position of one week along along steel pipe or outside steel pipe
Through there is reinforcing bar, form reinforcing bar and enclosed around steel pipe inner wall or outer wall one, reinforcing bar is solderable in through-holes, so, further come to add
The connection of strong steel pipe and concrete.
As shown in fig. 7, it is square that the cross section of the adjacent reinforced concrete bodies in the present embodiment, which is centre, two sides are circular arc
The structure of shape.
Embodiment 3
The present embodiment is on the basis of embodiment 1, to be with the difference in embodiment 1, steel pipe and pier footing
Centre be not provided with bottom steel plate, but an end part for steel pipe is embedded in pier footing, and is welded with the end of steel pipe
Base steel plates, base steel plates bottom part down is welded with steel pipe bottom dowel vertically, and the lower end of steel pipe bottom dowel is located at bridge
Pier foundation is interior and is bent upwards to form hook solid, in the end part embedment pier footing of longitudinal reinforcement.
After steel pipe can be wholely set with base steel plates and steel pipe bottom dowel, pier footing is embedded to together with longitudinal reinforcement
In, also can split setting.When split is set, first prepare after pier footing by welding remainder, specifically, split is set
When, as shown in Figure 8 and Figure 9, the embedded foundation steel pipe 16 in pier footing 8, in order to strengthen switching performance, at the basic bottom of steel pipe 16
Portion is respectively welded base steel plates 17, and in the bottom of base steel plates 17 vertically welded still pipe bottom dowel 18, steel pipe bottom dowel
18 lower end is located in pier footing 8 and provided with the crotch that is bent upwards, the setting of crotch enhance steel pipe bottom anchor reinforcing bar 18 with
The anchoring of pier footing 8, improves switching performance.Meanwhile, in pier footing 8 reserve certain length reinforcement foundation 19, so as to
Longitudinal reinforcement 10 in adjacent reinforced concrete bodies is connected, and reinforcement foundation 19 is correspondingly arranged with longitudinal reinforcement 10.
Illustrate the making and installation of composite steel tube concrete folding bridge pier in the present embodiment with reference to accompanying drawing 10, different from reality
The step applied in example 1 is essentially consisted in：
(2) base steel plates 17 are welded in the basic bottom of steel pipe 16, and steel is vertically welded in the bottom of base steel plates 17
Ttom of pipe dowel 18, by this structure, two are embedded in pier footing 8 in advance respectively, while in pier footing 8 pre-buried certain length base
Plinth reinforcing bar 19；
(3) two steel pipes 1 are respectively welded on basic steel pipe 16, longitudinal reinforcement 10 is corresponded to respectively and is welded on basic steel
On muscle 19.
Remaining step is identical with embodiment 1.
The above described is only a preferred embodiment of the present invention, being not the limitation that other forms are done 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 it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of composite steel tube concrete folding bridge pier, it is characterised in that including pier footing, adjacent reinforced concrete bodies, steel pipe
With multiple shear connectors, wherein, the adjacent reinforced concrete bodies and the steel pipe are fixed on the pier footing, the steel
Steel pipe described in reinforced concrete body envelopes is set, and the inside and outside of the steel pipe is alternately fixed on inside and outside multiple shear connectors
Side surface and with internal or external prominent protuberance from from the interior outer surface to the steel pipe, is marked with the steel pipe
Concrete.
2. as claimed in claim 1 overlapping bridge pier, it is characterised in that the steel pipe is set to two or more, the steel pipe it
Between be fixedly connected using steel plate strip.
3. as claimed in claim 1 overlapping bridge pier, it is characterised in that the shear connector be peg or steel plate with holes, its
In, the steel plate with holes is the strip-form steel plate with multiple equally spaced vias.
4. bridge pier is overlapped as claimed in claim 1, it is characterised in that bottom steel is provided between the pier footing and the steel pipe
Plate, the bottom steel plate is connected with the steel-pipe welding, and the bottom steel plate is fixedly connected with the pier footing using bottom anchor bolt.
5. bridge pier is overlapped as claimed in claim 4, it is characterised in that the pier footing, the bottom steel plate and the steel pipe
Bottom anchor reinforcing bar is provided between inner concrete three, the lower end of the bottom anchor reinforcing bar is located in pier footing and is bent upwards, described
The upper end of bottom anchor reinforcing bar is located in the steel pipe inner concrete.
6. bridge pier is overlapped as claimed in claim 1, it is characterised in that an end part for the steel pipe is located at the bridge pier base
In plinth, the end of the steel pipe is welded with base steel plates, and the base steel plates bottom is welded with steel pipe bottom anchor vertically
Muscle, the steel pipe bottom dowel lower end is located in the pier footing and is bent upwards, a part of position in end of the longitudinal reinforcement
In the pier footing.
7. bridge pier is overlapped as claimed in claim 1, it is characterised in that provided with connection steel in the concrete on the steel pipe top
Muscle, the lower end of the connection reinforcing bar is located in the steel pipe inner concrete, and the upper end of the connection reinforcing bar is higher than the steel pipe
Top is simultaneously bent downwardly setting.
8. overlapping bridge pier as claimed in claim 1, it is characterised in that also including bent cap, the bent cap is mixed located at the reinforcing bar
Solidifying soil main body and the steel pipe top, a top part for the steel pipe are stretched into the bent cap.
9. the overlapping bridge pier as any one of claim 1-8, it is characterised in that the adjacent reinforced concrete bodies are common
Multiple longitudinal reinforcements and multiple stirrups are provided with the middle of concrete, wherein, multiple longitudinal reinforcements are along the steel pipe periphery one
Weekly interval arranges that the upper end of the longitudinal reinforcement is higher than the top of the steel pipe, and the upper end of the longitudinal reinforcement is bent downwardly, institute
Stirrup is stated respectively around the outside for being fixed on all longitudinal reinforcements, along the longitudinal reinforcement in longitudinally spaced arrangement.
10. as claimed in claim 9 overlapping bridge pier, it is characterised in that the cross section of the peripheral armored concrete for it is square,
Circular, ellipse or centre are square, and two sides are the structure of circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525520.8A CN107130513A (en) | 2017-06-30 | 2017-06-30 | A kind of composite steel tube concrete folding bridge pier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710525520.8A CN107130513A (en) | 2017-06-30 | 2017-06-30 | A kind of composite steel tube concrete folding bridge pier |
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| CN107130513A true CN107130513A (en) | 2017-09-05 |
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| CN201710525520.8A Pending CN107130513A (en) | 2017-06-30 | 2017-06-30 | A kind of composite steel tube concrete folding bridge pier |
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| CN110094014A (en) * | 2019-04-30 | 2019-08-06 | 西安理工大学 | A kind of steel tube concrete superposed component of clod wash ribbed stiffener and moulding process |
| CN110409626A (en) * | 2019-07-24 | 2019-11-05 | 中国十七冶集团有限公司 | A kind of pre-buried hanging ring and installation process method |
| CN110847022A (en) * | 2019-12-19 | 2020-02-28 | 浙江省交通规划设计研究院有限公司 | Multi-support steel pipe concrete single-column pier with concrete cover beam |
| CN113494052A (en) * | 2021-07-06 | 2021-10-12 | 中铁二十局集团第六工程有限公司 | Construction method of solid pier column |
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| CN110409626A (en) * | 2019-07-24 | 2019-11-05 | 中国十七冶集团有限公司 | A kind of pre-buried hanging ring and installation process method |
| CN110847022A (en) * | 2019-12-19 | 2020-02-28 | 浙江省交通规划设计研究院有限公司 | Multi-support steel pipe concrete single-column pier with concrete cover beam |
| CN113494052A (en) * | 2021-07-06 | 2021-10-12 | 中铁二十局集团第六工程有限公司 | Construction method of solid pier column |
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