CN110042748A - A kind of UHPC box SRC arch bridge rod structure and its construction method - Google Patents
A kind of UHPC box SRC arch bridge rod structure and its construction method Download PDFInfo
- Publication number
- CN110042748A CN110042748A CN201910455825.5A CN201910455825A CN110042748A CN 110042748 A CN110042748 A CN 110042748A CN 201910455825 A CN201910455825 A CN 201910455825A CN 110042748 A CN110042748 A CN 110042748A
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- Prior art keywords
- uhpc
- src
- support column
- steel
- arch bridge
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 84
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 74
- 239000010959 steel Substances 0.000 claims abstract description 74
- 239000004567 concrete Substances 0.000 claims abstract description 35
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 238000012946 outsourcing Methods 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 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
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
Abstract
The present invention relates to a kind of UHPC box SRC arch bridge rod structure and its construction methods, it include four isometric support columns, the support column is connected by reinforcing bar UHPC plate, makes to form the square structure that support column is located at quadrangle, the support column and the elongated setting of reinforcing bar UHPC plate；The support column is made of UHPC layers of outsourcing of steel core concrete column and package steel core concrete column, which includes a steel pipe and the pipe inner concrete being filled in steel pipe；The reinforcing bar UHPC plate includes the rectangular UHPC plate between adjacent two support column, locating piece is equipped with support column connecting side in the rectangular UHPC plate, it is connected between the locating piece of two adjacent support columns by steel mesh, it is set up and connected reinforcing bar is formed inside steel mesh by being interspersed, the UHPC box SRC arch bridge rod structure is reasonable, ductility is good, bearing capacity is high, rigidity is big, from the good performance of heavy and light, durability, effectively reduces the occupied space of pier stud.
Description
Technical field
The present invention relates to a kind of UHPC box SRC arch bridge rod structure and its construction methods.
Background technique
Ultra-high performance concrete (Ultra-high Performance Concrete, hereinafter referred to as UHPC) can be rated as durable
Property best engineering material, by appropriate arrangement of reinforcement UHPC mechanical property close to steel construction, meanwhile, UHPC has excellent resistance to
Mill, the capability of antidetonance, after adding a certain amount of micro steel fiber, ductility can be significantly improved, it might even be possible to reach general
250 times of logical concrete ductility, ultimate tensile strength up to compressive ultimate strain 1%；UHPC has extensively in various job facilities
Application prospect, especially Large Span Bridges, explosion resistant structure (military engineering, bank vault etc.) and thin-wall construction etc.；UHPC mono-
As be made of materials such as cement, silicon ash, fine sand, high efficiency water reducing agent and steel fibres, component fineness is small, good fluidity, good from close property；
For UHPC when making and using, each raw material service efficiency is high, advantageously reduces material utilization amount and reduces the discharge of CO2, has
The effect for saving material, energy conservation and emission reduction, meets the theme of present social sustainable development, is the knot of high value of new generation, Gao Qianli
Structure and functional material.
Still there is some shortcomings in the application of Practical Project in box SRC arch bridge column, specifically such as
Lower explanation:
With the fast development of present Science and Technology, more and more Large Span Bridges are rised sheer from level ground, to box steel tube concrete
The bearing capacity of native stiff skeleton column, rigidity and life requirement are also higher and higher.If not changing box concrete filled steel tube stiffness
Concrete filled steel tube area of section in skeleton column and by increasing its reinforced concrete enveloped layer cross section area come lift tank fashioned iron
Bearing capacity, rigidity and the durability of pipe concrete stiff skeleton column, just will increase the occupied space of pier stud, be unfavorable for leading under bridge
Row, also increases difficulty of construction.But in order to meet the superior function of box SRC arch bridge column, outsourcing reinforcing bar is mixed
Solidifying soil layer is often designed to thicker form, so that it is excessive to lead to the problem of the structure scale of construction.
The concrete filled out in box SRC arch bridge column at present it is most of from great, intensity is low, rigidity is weak,
Frangible, corrosion-resistant general normal concrete, these disadvantages influence and limit box SRC arch bridge column big
Application in type bridge；Influence more serious west area in wind sand environment, the reinforced concrete enveloped layer extent of damage is also more
Seriously, it is unfavorable for the normal use of box SRC arch bridge column.
Again due to the self compacting ability of reinforced concrete enveloped layer in box SRC arch bridge column it is poor, structure by
When lotus is excessive, the localized crush for further increasing reinforced concrete enveloped layer is destroyed, and reduces box concrete filled steel tube stiffness bone
The superior function of trestle.
Thus, it is necessary to a kind of novel box SRC arch bridge rod structure is improved, it can either lift structure
Bearing capacity, rigidity and durability, and do not increase the area of feature cross-section, mitigate dead load.
Summary of the invention
In view of the deficiencies in the prior art, technical problem to be solved by the invention is to provide a kind of UHPC box steel tube concretes
Native stiff skeleton rod structure and its construction method, it is not only structurally reasonable but also convenient and efficient.
In order to solve the above-mentioned technical problem, the technical scheme is that including four isometric support columns, the support
Column is connected by reinforcing bar UHPC plate, makes to form the square structure that support column is located at quadrangle, and the support column and reinforcing bar UHPC plate are logical
Long setting；The support column is made of UHPC layers of outsourcing of steel core concrete column and package steel core concrete column, the steel tube concrete
Earth pillar includes a steel pipe and the pipe inner concrete being filled in steel pipe；The reinforcing bar UHPC plate includes positioned at adjacent
Rectangular UHPC plate between two support columns, the rectangular UHPC plate is interior to be equipped with locating piece with support column connecting side, two adjacent support columns
It is connected between locating piece by steel mesh, is set up and connected reinforcing bar is formed inside steel mesh by being interspersed.
Further, the steel mesh in the rectangular UHPC plate is arranged along support column length direction.
Further, described outsourcing UHPC layers, steel pipe, pipe inner concrete cross section be circle.
Further, the locating piece is trapezoid block, rectangular block or semicircle block.
Further, the steel mesh is connected with positioning block welding positioning or through bolt.
Further, described outsourcing UHPC layers with add in rectangular UHPC plate and have steel fibre.
A kind of working method of UHPC box SRC arch bridge rod structure first will sequentially include the following steps:
Locating piece is welded on steel pipe, and steel mesh is connected on locating piece between adjacent steel pipe, and commodity are then first perfused into steel pipe
Concrete carries out positioning form erecting operation after commerical ready-mixed concrete initial set outside steel pipe, guarantees outsourcing UHPC layers and rectangular UHPC plate
It is connected, pours UHPC concrete in mold towards pouring of putting up, penetrate into the gap of steel pipe, locating piece and reinforced frame,
In steel pipe, locating piece and reinforced frame are wrapped in, it is last it is to be formed after remove and pour mold, complete construction.
Compared with prior art, the invention has the following advantages: the UHPC box SRC arch bridge column
Structure, structure advantages of simple have that ductility is good, bearing capacity is high, rigidity is big, from heavy and light, the wearability and antiknock that durability is good, excellent
Property performance, the effective occupied space for reducing pier stud, and UHPC layers of outsourcing of design is obviously improved the anti-blown sand energy of structure
Power, the service life of extending structure are conducive to the construction and development of large bridge.
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is cross-sectional view of the embodiment of the present invention.
In figure: 1- support column, 2- reinforcing bar UHPC plate, 3- steel core concrete column, UHPC layers of 4- outsourcing, 5- steel pipe, in 6- pipe
Concrete, the rectangular UHPC plate of 7-, 8- locating piece, 9- steel mesh, 10- reinforcing bar.
Specific embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and cooperate attached drawing, make detailed
Carefully it is described as follows.
As shown in Figure 1, a kind of UHPC box SRC arch bridge rod structure, includes four isometric support columns
1, which is connected by reinforcing bar UHPC plate 2, makes to form the square structure that support column is located at quadrangle, the support column and reinforcing bar
The elongated setting of UHPC plate；The support column is made of the outsourcing UHPC layer 4 of steel core concrete column 3 and package steel core concrete column,
The steel core concrete column includes a steel pipe 5 and the pipe inner concrete 6 that is filled in steel pipe；The reinforcing bar UHPC plate packet
The rectangular UHPC plate 7 between adjacent two support column has been included, has been installed with locating piece with support column connecting side in the rectangular UHPC plate
8, it is connected between the locating piece of two adjacent support columns by steel mesh 9, is set up and connected steel inside steel mesh by being interspersed
The formation of muscle 10.
In embodiments of the present invention, the steel mesh in the rectangular UHPC plate is arranged along support column length direction.
In embodiments of the present invention, described outsourcing UHPC layers, steel pipe, pipe inner concrete cross section be circle.
In embodiments of the present invention, the locating piece is trapezoid block, rectangular block or semicircle block.
In embodiments of the present invention, the steel mesh is connected with positioning block welding positioning or through bolt.
In embodiments of the present invention, described outsourcing UHPC layers with add in rectangular UHPC plate and have steel fibre.
In embodiments of the present invention, cast-in-place mode is penetrated through by UHPC using whole with rectangular UHPC plate for described outsourcing UHPC layers
The skeleton of box SRC arch bridge column wraps up, to enhance UHPC box SRC arch bridge column
Globality；UHPC box SRC arch bridge column new construction effectively solves previous box SRC arch bridge column
Limitation problem, under structural section and steel using amount permanence condition, UHPC box SRC arch bridge column new construction
Bearing capacity and stiffness significantly improves, and reduces structural section with can dramatically and mitigate dead load, and by the superior of UHPC
Performance is used for the surrounding layer of UHPC box SRC arch bridge column, is obviously improved the anti-blown sand ability of structure, extends knot
The service life of structure；Be conducive to the construction and development of large bridge.
A kind of working method of UHPC box SRC arch bridge rod structure, and sequentially include the following steps: first
Locating piece is welded on steel pipe, steel mesh is connected on locating piece between adjacent steel pipe, quotient is then first perfused into steel pipe
Product concrete carries out positioning form erecting operation after commerical ready-mixed concrete initial set outside steel pipe, guarantees outsourcing UHPC layers and rectangular UHPC
Plate is connected, and pours UHPC in mold towards pouring of putting up, penetrates into the gap of steel pipe, locating piece and steel mesh, by steel
In pipe, locating piece and steel mesh are wrapped in, last rear remove to be formed pours mold, completes construction.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are each under the inspiration of the present invention
The UHPC box SRC arch bridge rod structure and its construction method of kind form.It is all according to scope of the present invention patent institute
The equivalent changes and modifications done, are all covered by the present invention.
Claims (7)
1. a kind of UHPC box SRC arch bridge rod structure and its construction method, it is characterised in that: include four
Isometric support column, the support column are connected by reinforcing bar UHPC plate, make to form the square structure that support column is located at quadrangle, the branch
Dagger and the elongated setting of reinforcing bar UHPC plate；The support column is by steel core concrete column and the outsourcing UHPC for wrapping up steel core concrete column
Layer composition, which includes a steel pipe and the pipe inner concrete being filled in steel pipe；The reinforcing bar
UHPC plate includes the rectangular UHPC plate between adjacent two support column, and it is fixed to be equipped in the rectangular UHPC plate with support column connecting side
Position block, be connected between the locating piece of two adjacent support columns by steel mesh, is set up and is connected by being interspersed inside steel mesh
Reinforcing bar is formed.
2. a kind of UHPC box SRC arch bridge rod structure according to claim 1 and its construction method,
Be characterized in that: the steel mesh in the rectangular UHPC plate is arranged along support column length direction.
3. a kind of UHPC box SRC arch bridge rod structure according to claim 1 and its construction method,
Be characterized in that: described outsourcing UHPC layers, steel pipe, pipe inner concrete cross section be circle.
4. a kind of UHPC box SRC arch bridge rod structure according to claim 1 and its construction method,
Be characterized in that: the locating piece is trapezoid block, rectangular block or semicircle block.
5. a kind of UHPC box SRC arch bridge rod structure according to claim 1 and its construction method,
Be characterized in that: the steel mesh is connected with positioning block welding positioning or through bolt.
6. a kind of UHPC box SRC arch bridge rod structure according to claim 1 and its construction method,
Be characterized in that: described outsourcing UHPC layers with add in rectangular UHPC plate and have steel fibre.
7. a kind of construction method of UHPC box SRC arch bridge rod structure, which is characterized in that wanted using such as right
A kind of UHPC box SRC arch bridge rod structure described in 1-6 is sought, and is sequentially included the following steps: locating piece first
It is welded on steel pipe, steel mesh is connected on locating piece between adjacent steel pipe, commerical ready-mixed concrete is first then perfused into steel pipe,
After commerical ready-mixed concrete initial set, positioning form erecting operation is carried out outside steel pipe, is guaranteed outsourcing UHPC layers and is connected with rectangular UHPC plate,
UHPC is poured in mold towards pouring of putting up, and is penetrated into the gap of steel pipe, locating piece and reinforced frame, by steel pipe, locating piece
In being wrapped in reinforced frame, it is last it is to be formed after remove and pour mold, complete construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910455825.5A CN110042748A (en) | 2019-05-29 | 2019-05-29 | A kind of UHPC box SRC arch bridge rod structure and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910455825.5A CN110042748A (en) | 2019-05-29 | 2019-05-29 | A kind of UHPC box SRC arch bridge rod structure and its construction method |
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| Publication Number | Publication Date |
|---|---|
| CN110042748A true CN110042748A (en) | 2019-07-23 |
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| CN201910455825.5A Pending CN110042748A (en) | 2019-05-29 | 2019-05-29 | A kind of UHPC box SRC arch bridge rod structure and its construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050204687A1 (en) * | 2004-03-16 | 2005-09-22 | Raftery Michael C | Method of constructing a concrete shear core multistory building |
| CN102587578A (en) * | 2012-03-21 | 2012-07-18 | 河南理工大学 | High-strength steel bar enhanced engineered cementitious composites (ECC)-hollow steel pipe ultra high performance concrete (UHPC) combination column member and manufacturing method thereof |
| CN105089077A (en) * | 2015-09-16 | 2015-11-25 | 江西贝融新型建材股份有限公司 | Compound well cover of ultra-high performance concrete honeycomb structure and method for manufacturing compound well cover |
| CN109629403A (en) * | 2019-02-22 | 2019-04-16 | 福州大学 | A kind of concrete support rod structure and preparation method thereof |
| CN210134331U (en) * | 2019-05-29 | 2020-03-10 | 福州大学 | UHPC box steel pipe concrete strength nature skeleton post structure |
-
2019
- 2019-05-29 CN CN201910455825.5A patent/CN110042748A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050204687A1 (en) * | 2004-03-16 | 2005-09-22 | Raftery Michael C | Method of constructing a concrete shear core multistory building |
| CN102587578A (en) * | 2012-03-21 | 2012-07-18 | 河南理工大学 | High-strength steel bar enhanced engineered cementitious composites (ECC)-hollow steel pipe ultra high performance concrete (UHPC) combination column member and manufacturing method thereof |
| CN105089077A (en) * | 2015-09-16 | 2015-11-25 | 江西贝融新型建材股份有限公司 | Compound well cover of ultra-high performance concrete honeycomb structure and method for manufacturing compound well cover |
| CN109629403A (en) * | 2019-02-22 | 2019-04-16 | 福州大学 | A kind of concrete support rod structure and preparation method thereof |
| CN210134331U (en) * | 2019-05-29 | 2020-03-10 | 福州大学 | UHPC box steel pipe concrete strength nature skeleton post structure |
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