CN110924292A - Stainless steel reinforced concrete slab stiffening dumbbell-shaped combination column and construction method thereof - Google Patents
Stainless steel reinforced concrete slab stiffening dumbbell-shaped combination column and construction method thereof Download PDFInfo
- Publication number
- CN110924292A CN110924292A CN201911170010.9A CN201911170010A CN110924292A CN 110924292 A CN110924292 A CN 110924292A CN 201911170010 A CN201911170010 A CN 201911170010A CN 110924292 A CN110924292 A CN 110924292A
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- stainless steel
- dumbbell
- reinforced concrete
- reinforcing bar
- column
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 206
- 239000010935 stainless steel Substances 0.000 title claims abstract description 204
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 38
- 238000010276 construction Methods 0.000 title claims description 19
- 239000004567 concrete Substances 0.000 claims abstract description 34
- 239000004576 sand Substances 0.000 claims abstract description 23
- 239000013535 sea water Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 210000000683 abdominal cavity Anatomy 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 230000002787 reinforcement Effects 0.000 claims description 12
- 239000012615 aggregate Substances 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003187 abdominal effect Effects 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
Abstract
The invention relates to a stainless steel reinforced concrete slab stiffening dumbbell-shaped combined column, which comprises two stainless steel pipes, two stainless steel batten plates and two stainless steel reinforced concrete slabs, wherein the two stainless steel batten plates are welded on the outer walls of the two stainless steel pipes and connected with the two stainless steel pipes to form a dumbbell-shaped column which is symmetrical along the connecting line of the centroids of the steel pipes; seawater sea sand recycled concrete is filled in the stainless steel tubes; the two stainless steel batten plates and the outer walls of the two stainless steel pipes enclose a dumbbell-shaped column abdominal cavity, and concrete is not filled in the abdominal cavity; the stainless steel reinforced concrete slab is arranged on the outer sides of the two stainless steel batten plates, and the structure is simple.
Description
Technical Field
The invention relates to a stainless steel reinforced concrete slab stiffened dumbbell-shaped composite column and a construction method thereof.
Background
Since the promotion of "one-by-one" construction, the construction of the human fate community is increasingly fruitful. In order to strengthen friendly connection and exchange among countries, higher requirements are put forward on various engineering constructions, particularly on the construction of offshore engineering.
Compared with the single circular tube section, the dumbbell-shaped section has higher compression rigidity, the bearing surface is far away from the central shaft, and the longitudinal bending rigidity is higher. However, when the existing dumbbell-shaped cross section is used for pouring the abdominal concrete, the web is easy to bulge outwards under the action of the concrete pressure, and the welding seam at the joint of the steel pipe and the web can be pulled apart to cause pipe burst accidents in severe cases. In order to prevent the situation, one of the existing treatment modes is to weld a transverse pull rod between the batten plates, but the resistance of pumping concrete is increased, the pressure in the batten plates is increased, the effect is intensified, the manufacturing construction process is complex, the stress concentration of the welding parts of the batten plates and the tie bars is easily caused, and the batten plates can be possibly bent; the other mode is that the main arch rib with the dumbbell-shaped section is not poured with concrete in the abdominal cavity, and stiffening H-shaped steel is only arranged inside the batten plate. The process of welding the H-shaped steel inside the abdominal cavity is complex, stress concentration is easily caused, and buckling of the batten plate is caused.
Disclosure of Invention
In view of the defects of the prior art, the technical problem to be solved by the invention is to provide a stainless steel reinforced concrete slab reinforced dumbbell-shaped combination column and a construction method thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows: a stainless steel reinforced concrete slab stiffening dumbbell-shaped combined column comprises two stainless steel pipes, two stainless steel batten plates and two stainless steel reinforced concrete slabs, wherein the two stainless steel batten plates are welded on the outer walls of the two stainless steel pipes and connected with the two stainless steel pipes to form a dumbbell-shaped column which is symmetrical along the connection line of the centroids of the steel pipes; seawater sea sand recycled concrete is filled in the stainless steel tubes; the two stainless steel batten plates and the outer walls of the two stainless steel pipes enclose a dumbbell-shaped column abdominal cavity, and concrete is not filled in the abdominal cavity; the stainless steel reinforced concrete slabs are all arranged on the outer sides of the two stainless steel batten plates.
Preferably, the outer contour of the stainless steel pipe is circular.
Preferably, the stainless steel reinforced concrete plates are all formed by pouring a stainless steel reinforcement framework and seawater sea sand recycled concrete.
Preferably, the stainless steel pipe all welds on the periphery wall that is located two outsides of abdominal cavity has the stainless steel board, and stainless steel bar skeleton comprises vertical stainless steel reinforcing bar and horizontal stainless steel reinforcing bar, and horizontal stainless steel reinforcing bar and vertical stainless steel reinforcing bar intersect perpendicularly, and horizontal stainless steel reinforcing bar is more than two-layer, and both ends welding is on the stainless steel board, and vertical stainless steel reinforcing bar all welds on every horizontal stainless steel reinforcing bar.
Preferably, horizontal stainless steel bar is along vertical equidistant distribution, and outermost horizontal stainless steel bar should satisfy the minimum thickness requirement of protective layer apart from the concrete edge distance, and every layer of horizontal stainless steel bar interval should satisfy the standard requirement.
Preferably, the transverse stainless steel bars and the vertical stainless steel bars in the stainless steel reinforced concrete plate can be one of plain steel bars or ribbed steel bars.
Preferably, the welding angle of the stainless steel plate is parallel to the connecting line of the centroids of the two stainless steel pipes.
Preferably, fillet welds are adopted between the stainless steel batten plate and the stainless steel pipe and between the stainless steel plate and the stainless steel pipe.
A construction method of a stainless steel reinforced concrete slab stiffened dumbbell-shaped combination column comprises the following steps: prefabricating stainless steel pipes with the same diameter according to the design size, welding stainless steel batten plates and the stainless steel pipes by using fillet welds, wherein the two stainless steel batten plates are parallel to the centroid connecting line of the two stainless steel pipes to preliminarily form a dumbbell-shaped steel pipe column; welding a stainless steel plate and a stainless steel pipe by using a fillet weld, wherein the stainless steel plate is parallel to the stainless steel batten plate; welding two ends of the transverse stainless steel bars on the stainless steel plate at equal intervals, and then welding the vertical stainless steel bars with each transverse stainless steel bar to form a stainless steel bar framework; erecting a template outside the stainless steel batten plate to facilitate pouring of a stainless steel reinforced concrete plate for stiffening; uniformly stirring seawater and sea sand recycled concrete according to proportion gradation, firstly pouring the recycled concrete between a template and a stainless steel batten plate, and vibrating the recycled concrete to be compact; then pouring the mixture into a stainless steel tube, and vibrating the mixture to be compact.
Preferably, the seawater and sea sand recycled concrete is prepared by uniformly stirring and pouring undisturbed sea sand, construction waste recycled fine aggregate, construction waste recycled coarse aggregate, seawater and fly ash according to a certain proportion.
Compared with the prior art, the invention has the following beneficial effects: the structural form is dumbbell type steel pipe concrete column, and bearing capacity is high, and the ductility is good. Therefore, the bridge can be used for structural members mainly stressed, such as an arch rib structure, and can also be used as a design scheme of a high bridge pier, when the bridge is applied to a cross-river and cross-sea bridge, the cross bridge of the bridge pier is in a circular cross section, water flow is facilitated, and the influence of hydrodynamic pressure on the structure and the scouring on the bridge pier are reduced. Meanwhile, the stainless steel reinforced concrete plate is used for stiffening, the pipe explosion accident of the dumbbell-shaped stainless steel pipe column is effectively avoided, buckling of the batten plate caused by the arrangement of the H-shaped steel in the abdominal cavity is avoided, the later repairing and maintaining cost is reduced, and the whole life cycle cost is reduced.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a top view of an embodiment of the present invention.
Fig. 2 is an elevational view of a rebar distribution according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1-2, a stainless steel reinforced concrete slab stiffening dumbbell-shaped combined column comprises two stainless steel tubes 1, two stainless steel batten plates 2 and two stainless steel reinforced concrete slabs 3, wherein the two stainless steel batten plates are welded on the outer walls of the two stainless steel tubes and connected with the two stainless steel tubes to form a dumbbell-shaped column symmetrical along the center line of the steel tubes; seawater and sea sand recycled concrete 4 is filled in the stainless steel pipes; the two stainless steel batten plates and the outer walls of the two stainless steel pipes form a dumbbell-shaped column abdominal cavity 5 in an enclosing mode, and concrete is not filled in the abdominal cavity; the stainless steel reinforced concrete slabs are all arranged on the outer sides of the two stainless steel batten plates.
In the embodiment of the invention, the outer contour of the stainless steel pipe is circular.
In the embodiment of the invention, the stainless steel reinforced concrete plate is formed by pouring the stainless steel reinforcement cage 6 and seawater sea sand recycled concrete.
In the embodiment of the invention, the stainless steel plates 7 are welded on the outer peripheral walls of the stainless steel pipes on the two outer sides of the abdominal cavity, the stainless steel reinforcement frameworks are composed of vertical stainless steel reinforcements 8 and horizontal stainless steel reinforcements 9, the horizontal stainless steel reinforcements and the vertical stainless steel reinforcements are vertically intersected, the number of the horizontal stainless steel reinforcements is more than two, two ends of each horizontal stainless steel reinforcement are welded on the stainless steel plates, and the vertical stainless steel reinforcements are welded on each horizontal stainless steel reinforcement.
In the embodiment of the invention, the transverse stainless steel bars are distributed at equal intervals along the vertical direction, the distance between the outermost transverse stainless steel bar and the edge of the concrete meets the requirement of the minimum thickness of the protective layer, and the interval between every two layers of transverse stainless steel bars meets the requirement of the specification.
In an embodiment of the present invention, the transverse stainless steel bars and the vertical stainless steel bars in the stainless steel reinforced concrete panel may be one of plain steel bars or ribbed steel bars.
In the embodiment of the invention, the welding angle of the stainless steel plate is parallel to the connecting line of the centroids of the two stainless steel pipes.
In the embodiment of the invention, fillet welds are adopted between the stainless steel batten plate and the stainless steel pipe and between the stainless steel plate and the stainless steel pipe.
A construction method of a stainless steel reinforced concrete slab stiffened dumbbell-shaped combination column comprises the following steps: prefabricating stainless steel pipes with the same diameter according to the design size, welding stainless steel batten plates and the stainless steel pipes by using fillet welds, wherein the two stainless steel batten plates are parallel to the centroid connecting line of the two stainless steel pipes to preliminarily form a dumbbell-shaped steel pipe column; welding a stainless steel plate and a stainless steel pipe by using a fillet weld, wherein the stainless steel plate is parallel to the stainless steel batten plate; welding two ends of the transverse stainless steel bars on the stainless steel plate at equal intervals, and then welding the vertical stainless steel bars with each transverse stainless steel bar to form a stainless steel bar framework; erecting a template outside the stainless steel batten plate to facilitate pouring of a stainless steel reinforced concrete plate for stiffening; uniformly stirring seawater and sea sand recycled concrete according to proportion gradation, firstly pouring the recycled concrete between a template and a stainless steel batten plate, and vibrating the recycled concrete to be compact; then pouring the mixture into a stainless steel tube, and vibrating the mixture to be compact.
In the embodiment of the invention, the seawater and sea sand recycled concrete is prepared by uniformly stirring and pouring undisturbed sea sand, building waste recycled fine aggregate, building waste recycled coarse aggregate, seawater and fly ash according to a certain proportion. The stainless steel tube, the stainless steel batten plate, the stainless steel plate and the steel bar can be made of one or more of austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, austenitic-ferritic stainless steel and the like. For projects of coastal areas and island construction, local materials are obtained, seawater and undisturbed sea sand are directly adopted, and the recycled coarse aggregate is used for preparing concrete, so that the problem of resource shortage at present can be solved, building wastes can be consumed, the method is a way for realizing sustainable development of concrete, and is consistent with circular economy and green economy which are vigorously advocated in China at present. The river sand is replaced by the undisturbed sea sand comprehensively, so that the engineering cost generated by remotely adjusting the river sand is saved, the engineering construction period is shortened, the engineering economy is enhanced, and the development of various ocean engineering is promoted. Because the particle size difference between the undisturbed sea sand and the recycled coarse aggregate is large, the recycled fine aggregate is added to replace part of the sea sand, so that the particle size distribution of the concrete can be adjusted, the use of machine-made sand can be avoided, non-renewable resources are saved, and the method conforms to the policy of sustainable development. Under the condition of meeting the structural bearing capacity required by engineering, building wastes are consumed, ocean resources are fully utilized, non-renewable resources are protected, the engineering construction cost is saved, the environment friendliness, ecology, economy and sustainability are realized, the pipe explosion accident of the dumbbell-shaped stainless steel pipe column is avoided, the later-stage repairing and maintaining cost is reduced, and the whole life cycle cost is reduced.
The present invention is not limited to the above preferred embodiments, and various other forms of the stainless steel reinforced concrete panel reinforced dumbbell type composite column and the construction method thereof can be made by anyone who can use the present invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (10)
1. The utility model provides a stainless steel reinforced concrete slab dumbbell type combination post of putting more energy into which characterized in that: the dumbbell-shaped steel tube comprises two stainless steel tubes, two stainless steel batten plates and two stainless steel reinforced concrete plates, wherein the two stainless steel batten plates are welded on the outer walls of the two stainless steel tubes and connected with the two stainless steel tubes to form a dumbbell-shaped column which is symmetrical along the connection line of the centroids of the two stainless steel tubes; seawater sea sand recycled concrete is filled in the stainless steel tubes; the two stainless steel batten plates and the outer walls of the two stainless steel pipes enclose a dumbbell-shaped column abdominal cavity, and concrete is not filled in the abdominal cavity; the stainless steel reinforced concrete slabs are all arranged on the outer sides of the two stainless steel batten plates.
2. The stainless steel reinforced concrete panel stiffened dumbbell-type combination column of claim 1, wherein: the outline of the stainless steel pipe is circular.
3. The stainless steel reinforced concrete panel stiffened dumbbell-type combination column of claim 1, wherein: the stainless steel reinforced concrete slab is formed by pouring a stainless steel reinforcement framework and seawater sea sand recycled concrete.
4. The stainless steel reinforced concrete panel stiffened dumbbell type combination column of claim 3, wherein: stainless steel pipe all welds on the periphery wall that is located two outsides in the abdominal cavity has the stainless steel board, and stainless steel bar skeleton comprises vertical stainless steel reinforcing bar and horizontal stainless steel reinforcing bar, and horizontal stainless steel reinforcing bar and vertical stainless steel reinforcing bar intersect perpendicularly, and horizontal stainless steel reinforcing bar is more than two-layer, and both ends welding all welds on every horizontal stainless steel reinforcing bar on the stainless steel board, vertical stainless steel reinforcing bar.
5. The stainless steel reinforced concrete panel stiffened dumbbell-type combination column of claim 4, wherein: the horizontal stainless steel reinforcing bar distributes along vertical equidistant, and the outermost horizontal stainless steel reinforcing bar should satisfy the minimum thickness requirement of protective layer from concrete edge distance, and every layer of horizontal stainless steel reinforcing bar interval should satisfy the standard requirement.
6. The stainless steel reinforced concrete panel stiffened dumbbell-type combination column of claim 4, wherein: the transverse stainless steel bars and the vertical stainless steel bars in the stainless steel reinforced concrete slab can be one of plain steel bars or ribbed steel bars.
7. The stainless steel reinforced concrete panel stiffened dumbbell-type combination column of claim 4, wherein: the welding angle of the stainless steel plate is parallel to the connecting line of the centroids of the two stainless steel pipes.
8. The stainless steel reinforced concrete panel stiffened dumbbell-type combination column of claim 4, wherein: fillet welds are adopted between the stainless steel batten plate and the stainless steel pipe and between the stainless steel plate and the stainless steel pipe.
9. A method of constructing a stainless steel reinforced concrete panel stiffened dumbbell type composite column according to any one of claims 1 to 8, comprising the steps of: prefabricating stainless steel pipes with the same diameter according to the design size, welding stainless steel batten plates and the stainless steel pipes by using fillet welds, wherein the two stainless steel batten plates are parallel to the centroid connecting line of the two stainless steel pipes to preliminarily form a dumbbell-shaped steel pipe column; welding a stainless steel plate and a stainless steel pipe by using a fillet weld, wherein the stainless steel plate is parallel to the stainless steel batten plate; welding two ends of the transverse stainless steel bars on the stainless steel plate at equal intervals, and then welding the vertical stainless steel bars with each transverse stainless steel bar to form a stainless steel bar framework; erecting a template outside the stainless steel batten plate to facilitate pouring of a stainless steel reinforced concrete plate for stiffening; uniformly stirring seawater and sea sand recycled concrete according to proportion gradation, firstly pouring the recycled concrete between a template and a stainless steel batten plate, and vibrating the recycled concrete to be compact; then pouring the mixture into a stainless steel tube, and vibrating the mixture to be compact.
10. The method of constructing a stainless steel reinforced concrete panel stiffened dumbbell type composite column according to claim 9, wherein: the seawater sea sand recycled concrete is prepared by uniformly stirring and pouring undisturbed sea sand, construction waste recycled fine aggregate, construction waste recycled coarse aggregate, seawater and fly ash according to a certain proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911170010.9A CN110924292A (en) | 2019-11-26 | 2019-11-26 | Stainless steel reinforced concrete slab stiffening dumbbell-shaped combination column and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911170010.9A CN110924292A (en) | 2019-11-26 | 2019-11-26 | Stainless steel reinforced concrete slab stiffening dumbbell-shaped combination column and construction method thereof |
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| CN110924292A true CN110924292A (en) | 2020-03-27 |
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| CN201911170010.9A Pending CN110924292A (en) | 2019-11-26 | 2019-11-26 | Stainless steel reinforced concrete slab stiffening dumbbell-shaped combination column and construction method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202644376U (en) * | 2012-05-15 | 2013-01-02 | 长安大学 | Dumbbell type steel tube concrete structure of non-filling abdominal cavity stiffening batten plate |
| CN104314001A (en) * | 2014-10-20 | 2015-01-28 | 广西交通科学研究院 | Reclaimed concrete U-shaped rib dumbbell type columnar pier |
| CN105133788A (en) * | 2015-08-04 | 2015-12-09 | 福州大学 | CFST-RC horizontal batten plate-lattice column structure and construction method thereof |
| US20160108619A1 (en) * | 2014-10-16 | 2016-04-21 | Emin Buzimkic | Prefabricated modular rebar modules and methods of using the same |
| CN107190635A (en) * | 2017-06-26 | 2017-09-22 | 天津大学 | Concrete-filled steel tube with dumbbell sections assembled pier and the connection structure and method with cushion cap |
| CN211446571U (en) * | 2019-11-26 | 2020-09-08 | 福州大学 | Stainless steel reinforced concrete slab stiffened dumbbell-shaped combined column |
-
2019
- 2019-11-26 CN CN201911170010.9A patent/CN110924292A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202644376U (en) * | 2012-05-15 | 2013-01-02 | 长安大学 | Dumbbell type steel tube concrete structure of non-filling abdominal cavity stiffening batten plate |
| US20160108619A1 (en) * | 2014-10-16 | 2016-04-21 | Emin Buzimkic | Prefabricated modular rebar modules and methods of using the same |
| CN104314001A (en) * | 2014-10-20 | 2015-01-28 | 广西交通科学研究院 | Reclaimed concrete U-shaped rib dumbbell type columnar pier |
| CN105133788A (en) * | 2015-08-04 | 2015-12-09 | 福州大学 | CFST-RC horizontal batten plate-lattice column structure and construction method thereof |
| CN107190635A (en) * | 2017-06-26 | 2017-09-22 | 天津大学 | Concrete-filled steel tube with dumbbell sections assembled pier and the connection structure and method with cushion cap |
| CN211446571U (en) * | 2019-11-26 | 2020-09-08 | 福州大学 | Stainless steel reinforced concrete slab stiffened dumbbell-shaped combined column |
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