CN202644848U - Steel tube concrete - Google Patents
Steel tube concrete Download PDFInfo
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- CN202644848U CN202644848U CN2012202486379U CN201220248637U CN202644848U CN 202644848 U CN202644848 U CN 202644848U CN 2012202486379 U CN2012202486379 U CN 2012202486379U CN 201220248637 U CN201220248637 U CN 201220248637U CN 202644848 U CN202644848 U CN 202644848U
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Abstract
The utility model discloses a steel tube concrete. A steel tube is filled with the concrete; the outer side of the steel tube is coated with the concrete, so that a concrete fire-proofing layer is formed on the surface of the steel tube. Since the concrete has high specific heat capacity, the concrete can be used for effectively postponing fire heat transmission, and thus after the outer side of the steel tube is coated with the concrete, the fire endurance of the steel tube concrete can be greatly improved.
Description
Technical field
The utility model relates to a kind of technical field of construction work, espespecially a kind of concrete filled steel tube.
Background technology
Concrete filled steel tube refers to fill concrete in steel pipe, forms the solid composite structure, such as steel core concrete column or steel tube concrete beam etc.As everyone knows, concrete compressive strength is higher, but bending resistance is very weak; And the bending resistance of steel is strong, has good elastoplasticity, but when pressurized easy unstability and lose the axial compression resistance ability.And concrete filled steel tube structurally can with the two advantages together, can make concrete be in the side loaded state, its compressive strength can significantly improve.Owing to concrete existence, improved the rigidity of steel pipe simultaneously, both play a role jointly, thereby have improved supporting capacity widely.In high level, Super High and long span building, steel core concrete column finds broad application at present.
But the existing concrete filled steel tube outside is steel pipe, and the fireproof performance of steel is good not as concrete, and therefore present concrete filled steel tube fire endurance is not high, haves much room for improvement.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of concrete filled steel tube that can improve fire endurance.
For solving the problems of the technologies described above, technical solution of the present utility model is:
A kind of concrete filled steel tube is filled with concrete in a steel pipe, thereby the outer concrete that is surrounded by in the described steel pipe outside forms the Concrete Anti fire bed in steel tube surface.
Described Concrete Anti fire bed inside is provided with steel mesh reinforcement.
After adopting such scheme, since the utility model in the steel pipe of the concrete filled steel tube of the original structure outside also outsourcing one deck Concrete Anti fire bed, and specific heat capacity of concrete is large, can effectively delay the transmission of fire heat, therefore can significantly improve the fire endurance of concrete filled steel tube.In addition, concrete is close with the steel linear expansion coeffcient, and parcel steel member has good adhesion stress to form Unified Global, prevents the Concrete At High Temperature explosion, and durable, corrosion resistance are strong.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
What the utility model disclosed is a kind of concrete filled steel tube, as shown in Figure 1, is preferred embodiment of the present utility model.Described concrete filled steel tube is filled with concrete 4 in a steel pipe 3, this structure is existing encased structures.
Key of the present utility model is: form Concrete Anti fire bed 1 thereby described steel pipe 3 outsides also are surrounded by concrete outward in steel tube surface.
Further, in described Concrete Anti fire bed 1 inside steel mesh reinforcement 2 can be set, to gain in strength.
Because specific heat capacity of concrete is large, can effectively delay the transmission of fire heat, therefore can significantly improve the fire endurance of concrete filled steel tube.
The above is preferred embodiment of the present utility model only, is not to limit the scope that the utility model is implemented.So variation or the modification in every case done according to claim of the present utility model and manual all should belong within the scope that the utility model patent contains.
Claims (2)
1. a concrete filled steel tube is filled with concrete in a steel pipe, it is characterized in that: thus the outer concrete that is surrounded by in the described steel pipe outside forms the Concrete Anti fire bed in steel tube surface.
2. concrete filled steel tube according to claim 1, it is characterized in that: described Concrete Anti fire bed inside is provided with steel mesh reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202486379U CN202644848U (en) | 2012-05-30 | 2012-05-30 | Steel tube concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202486379U CN202644848U (en) | 2012-05-30 | 2012-05-30 | Steel tube concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202644848U true CN202644848U (en) | 2013-01-02 |
Family
ID=47413972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202486379U Expired - Fee Related CN202644848U (en) | 2012-05-30 | 2012-05-30 | Steel tube concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202644848U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088964A (en) * | 2013-01-24 | 2013-05-08 | 合肥工业大学 | Steel tube foam concrete combined upright column and construction method thereof |
| CN103669729A (en) * | 2013-12-06 | 2014-03-26 | 清华大学 | Steel tube concrete overlap-type lattice column |
| CN105369892A (en) * | 2015-09-23 | 2016-03-02 | 清华大学 | Concrete filled steel tube composite frame structure system |
| CN106381956A (en) * | 2016-10-09 | 2017-02-08 | 华南理工大学 | Concrete prefabricated shell-regenerated mixed concrete combination column and preparation method thereof |
-
2012
- 2012-05-30 CN CN2012202486379U patent/CN202644848U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088964A (en) * | 2013-01-24 | 2013-05-08 | 合肥工业大学 | Steel tube foam concrete combined upright column and construction method thereof |
| CN103669729A (en) * | 2013-12-06 | 2014-03-26 | 清华大学 | Steel tube concrete overlap-type lattice column |
| CN105369892A (en) * | 2015-09-23 | 2016-03-02 | 清华大学 | Concrete filled steel tube composite frame structure system |
| CN106381956A (en) * | 2016-10-09 | 2017-02-08 | 华南理工大学 | Concrete prefabricated shell-regenerated mixed concrete combination column and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20200530 |