CN212613369U - Round steel tube concrete with negative Poisson's ratio effect - Google Patents
Round steel tube concrete with negative Poisson's ratio effect Download PDFInfo
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- CN212613369U CN212613369U CN202021470374.7U CN202021470374U CN212613369U CN 212613369 U CN212613369 U CN 212613369U CN 202021470374 U CN202021470374 U CN 202021470374U CN 212613369 U CN212613369 U CN 212613369U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 141
- 239000010959 steel Substances 0.000 title claims abstract description 141
- 239000004567 concrete Substances 0.000 title claims abstract description 56
- 230000000694 effects Effects 0.000 title claims abstract description 29
- 230000000737 periodic effect Effects 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000010146 3D printing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action 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
- 230000007123 defense Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
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Abstract
The utility model discloses a round steel tube concrete with negative poisson's ratio effect, which comprises a round steel tube with negative poisson's ratio effect, a steel support with negative poisson's ratio effect and concrete; the steel support is arranged on the inner wall of the circular steel tube, and the concrete is filled in the circular steel tube; the round steel pipe and the steel support are of a hole structure with periodic horizontal and vertical alternation; the relation between the height L of the circular steel tube and the diameter D of the circular steel tube is as follows: 2.5< L/D < 5; the relation between the thickness r of the round steel pipe and the diameter D of the round steel pipe is required to be more than 30 and less than 40; the height of the steel support is equal to L, and the width d of the steel support meets the following requirements: 0.6< D/D < 0.7. The utility model discloses circular steel tube concrete can initiatively retrain the lateral deformation of core concrete, has improved the pressurized bearing capacity and the ductility of structure. Meanwhile, the hole design of the negative Poisson ratio steel pipe can improve the anti-seismic performance of the structure.
Description
Technical Field
The utility model relates to a design the round steel tube concrete that has negative poisson's ratio effect through designing three-dimensional negative poisson's ratio hole structure, also related to the integrated configuration of steel and concrete, belong to new material and new construction field.
Background
Concrete has a long history as the most common material in construction. Due to the existence of initial defects, when the concrete is axially compressed, the concrete begins to expand transversely, so that cracks are continuously developed until the cracks are communicated to form a damaged surface. Although the steel pipe concrete can restrain the radial expansion of the concrete when the Poisson ratio of the concrete is larger than that of the steel pipe, when the concrete starts to be pressed, the Poisson ratio of the concrete is smaller than that of the steel pipe, the radial deformation of the steel pipe is larger than that of the concrete, and the steel pipe does not play a role in restraining the concrete.
The negative poisson's ratio material and the structure have unusual mechanical properties, and different from the compression expansion and the stretching of the traditional material, the negative poisson's ratio material transversely contracts (expands) under the action of uniaxial pressure (tensile force). The negative poisson's ratio effect can improve the mechanical properties of the material, including shear modulus, fracture toughness, energy absorption characteristics, strength, indentation resistance and the like. Due to the excellent performances, the negative Poisson's ratio material has wider and wider application prospect in the fields of medical equipment, sensors, protective equipment, aviation and navigation, national defense engineering and the like.
The utility model discloses combine together negative poisson's ratio circular steel tube and concrete structure, utilize the inside shrink's of negative poisson's ratio circular steel tube axial pressurized characteristic, improved the not enough condition of current steel pipe concrete restraint concrete, improved bearing capacity, ductility and the anti-seismic performance of structure. The utility model discloses combine together negative poisson ratio structure and steel-concrete structure, design and preparation have the round steel tube concrete of negative poisson ratio effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at some not enough to current steel pipe concrete, utilize the special property of negative poisson ratio material and structure, design and made the negative poisson ratio round steel pipe concrete that has the practicality, the round steel pipe concrete of design can initiatively retrain the lateral deformation of core concrete, has improved the pressurized bearing capacity and the ductility of structure. Meanwhile, the hole design of the negative Poisson ratio steel pipe can improve the anti-seismic performance of the structure.
The utility model adopts the technical proposal that: a round steel tube concrete with a negative Poisson ratio effect comprises a round steel tube with the negative Poisson ratio effect, a steel support with the negative Poisson ratio effect and concrete; the steel support is arranged on the inner wall of the circular steel tube, and the concrete is filled in the circular steel tube;
the round steel pipe and the steel support are of a hole structure with periodic horizontal and vertical alternation;
the relation between the height L of the circular steel tube and the diameter D of the circular steel tube is as follows: 2.5< L/D < 5;
the relation between the thickness r of the round steel pipe and the diameter D of the round steel pipe is required to be more than 30 and less than 40;
the number of the steel supports is four, the steel supports are arranged along the inner wall of the circular steel tube at intervals of 90 degrees and are not contacted with the holes of the hole structure of the circular steel tube;
the height of the steel support is equal to L, and the width d of the steel support meets the following requirements: 0.6< D/D < 0.7;
and HY-T119 rhinestone glue is filled in the holes of the hole structures of the round steel pipe and the steel support.
Preferably, the hole shape of the hole structure of the round steel pipe and the steel support comprises an ellipse, a triangle and a polygon.
The method for designing the round steel tube concrete with the negative Poisson's ratio effect comprises the following steps:
1) determining the sizes of the round steel pipe, the steel support and the concrete according to the stress condition and the building application of the round steel pipe concrete with the negative Poisson ratio;
2) the round steel pipe and the steel support with the negative Poisson's ratio are designed to be of a periodic hole structure with alternate horizontal and vertical directions, and the space between holes in the hole structure is reduced as much as possible under the condition of meeting the stress requirement;
3) selecting high-strength steel as a base material of the circular steel tube and the steel support, and preparing the circular steel tube and the steel support with the negative Poisson ratio effect by adopting a 3D printing technology;
4) the holes of the hole structures of the round steel pipe and the steel support are filled with HY-T119 rhinestone glue to prevent concrete from being filled in the pouring process;
5) and pouring concrete into the combined round steel tube and steel support, and curing to obtain the round steel tube concrete with the negative Poisson's ratio effect.
The utility model discloses its key that produces negative poisson's ratio effect lies in the design of negative poisson's ratio circular steel tube and steel shotcrete. The transverse and vertical alternate hole-shaped structures are ensured to be smaller, so that the steel pipe and the steel support have a negative Poisson ratio effect. The round steel tube concrete designed by the method has obvious negative Poisson ratio effect, and can maintain the negative Poisson ratio performance in a large strain range.
Has the advantages that: the utility model discloses the round steel pipe concrete that utilizes this method to design has great negative poisson's ratio effect when the axial pressurized. Compared with traditional steel pipe concrete, the transverse deformation of the core concrete can be better restrained, the bearing capacity of the structure is improved, and the ductility of the structure is increased. Meanwhile, by utilizing the good energy absorption characteristic of the negative Poisson's ratio round steel tube, the shock resistance of the round steel tube concrete is also improved.
Drawings
FIG. 1 is a front view of a round steel tube concrete with negative Poisson's ratio effect according to the present invention;
FIG. 2 is a top view of the round steel tube concrete with negative Poisson's ratio effect of the present invention;
fig. 3 is a front view of the steel support of the present invention.
Detailed Description
The invention will be further described with reference to the following detailed description and the accompanying drawings:
as shown in fig. 1, 2 and 3, a round steel tube concrete with negative poisson's ratio effect comprises a round steel tube 1 with negative poisson's ratio effect, a steel support 2 with negative poisson's ratio effect and concrete 3; the steel support 2 is arranged on the inner wall of the circular steel tube 1, and the concrete 3 is filled in the circular steel tube 1;
the round steel pipe 1 and the steel support 2 are of a periodic vertical and horizontal alternate hole structure;
the relation between the height L of the circular steel tube 1 and the diameter D of the circular steel tube 1 is as follows: 2.5< L/D < 5;
the relation between the thickness r of the round steel pipe 1 and the diameter D of the round steel pipe 1 is required to be more than 30 and less than D/r and less than 40;
the number of the steel supports 2 is four, the steel supports are arranged at intervals of 90 degrees along the inner wall of the circular steel tube 1 and are not in contact with the holes of the hole structure of the circular steel tube 1;
the height of the steel support 2 is equal to L, and the width d of the steel support 2 satisfies the following conditions: 0.6< D/D < 0.7;
and HY-T119 rhinestone glue is filled in the holes of the hole structures of the round steel pipe 1 and the steel support 2.
The hole shapes of the hole structures of the round steel pipe 1 and the steel support 2 comprise an ellipse, a triangle and a polygon.
The method for designing the round steel tube concrete with the negative Poisson's ratio effect comprises the following steps:
1) determining the sizes of the round steel pipe, the steel support and the concrete according to the stress condition and the building application of the round steel pipe concrete with the negative Poisson ratio;
2) the round steel pipe and the steel support with the negative Poisson's ratio are designed to be of a periodic hole structure with alternate horizontal and vertical directions, and the space between holes in the hole structure is reduced as much as possible under the condition of meeting the stress requirement;
3) selecting high-strength steel as a base material of the circular steel tube and the steel support, and preparing the circular steel tube and the steel support with the negative Poisson ratio effect by adopting a 3D printing technology;
4) the holes of the hole structures of the round steel pipe and the steel support are filled with HY-T119 rhinestone glue to prevent concrete from being filled in the pouring process;
5) and pouring concrete into the combined round steel tube and steel support, and curing to obtain the round steel tube concrete with the negative Poisson's ratio effect.
It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention. Components not explicitly described in this example can be implemented using existing techniques.
Claims (1)
1. A round steel tube concrete with negative Poisson's ratio effect which characterized in that: the device comprises a round steel pipe with a negative Poisson ratio effect, a steel support with the negative Poisson ratio effect and concrete; the steel support is arranged on the inner wall of the circular steel tube, and the concrete is filled in the circular steel tube;
the round steel pipe and the steel support are of a hole structure with periodic horizontal and vertical alternation;
the relation between the height L of the circular steel tube and the diameter D of the circular steel tube is as follows: 2.5< L/D < 5;
the relation between the thickness r of the round steel pipe and the diameter D of the round steel pipe is required to be more than 30 and less than 40;
the number of the steel supports is four, the steel supports are arranged along the inner wall of the circular steel tube at intervals of 90 degrees and are not contacted with the holes of the hole structure of the circular steel tube;
the height of the steel support is equal to L, and the width d of the steel support meets the following requirements: 0.6< D/D < 0.7;
and HY-T119 rhinestone glue is filled in the holes of the hole structures of the round steel pipe and the steel support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021470374.7U CN212613369U (en) | 2020-07-23 | 2020-07-23 | Round steel tube concrete with negative Poisson's ratio effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021470374.7U CN212613369U (en) | 2020-07-23 | 2020-07-23 | Round steel tube concrete with negative Poisson's ratio effect |
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| Publication Number | Publication Date |
|---|---|
| CN212613369U true CN212613369U (en) | 2021-02-26 |
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| CN202021470374.7U Active CN212613369U (en) | 2020-07-23 | 2020-07-23 | Round steel tube concrete with negative Poisson's ratio effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11873637B2 (en) | 2022-02-15 | 2024-01-16 | Joon Bu Park | Bricks exhibiting negative Poisson's ratio |
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2020
- 2020-07-23 CN CN202021470374.7U patent/CN212613369U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11873637B2 (en) | 2022-02-15 | 2024-01-16 | Joon Bu Park | Bricks exhibiting negative Poisson's ratio |
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