CN201411704Y - Reinforced concrete foundation or pile cap - Google Patents
Reinforced concrete foundation or pile cap Download PDFInfo
- Publication number
- CN201411704Y CN201411704Y CN2009200329530U CN200920032953U CN201411704Y CN 201411704 Y CN201411704 Y CN 201411704Y CN 2009200329530 U CN2009200329530 U CN 2009200329530U CN 200920032953 U CN200920032953 U CN 200920032953U CN 201411704 Y CN201411704 Y CN 201411704Y
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- Prior art keywords
- reinforced concrete
- foundation
- pile
- pile cap
- concrete foundation
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- Expired - Lifetime
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Abstract
The utility model relates to the field of high-rise buildings, in particular to a reinforced concrete foundation or pile cap, which adopts a prestressed structure in the vertical direction and comprises an upper structure and a natural foundation or pile foundation. The utility model is characterized in that prestressed reinforcement (2) is inlaid in the reinforced concrete foundation (1) or reinforced concrete pile cap (5) connected with the lower end of the upper structure (4). The utility model has the advantages that the force applied on the foundation or the pile cap is more reasonable, and the crack resistance and the stability of the foundation or the pile cap are better.
Description
Technical field
The utility model relates to high-rise structures structure field, particularly a kind of reinforced concrete foundation or pile cap.
Background technology
In recent years, the wind power tower basis that China is newly-built, be generally two kinds of forms of direct foundation and pile foundation, but also have following subject matter: 1, basis or pile cap bear bigger vertical tension, and basis or pile cap adopt more plain bars for this power of opposing is general; 2, to calculate the crack under tension bigger because basis or pile cap bear bigger vertical tension.How solving above these contradictions, reach the problem that overcomes above-mentioned existence, do not influence speed of application again simultaneously, is problem to be solved in the utility model.
Summary of the invention
The purpose of this utility model provides a kind of novel foundation or pile cap, and when not influencing speed of application, the deficiency that overcomes the known technology existence makes tangible more reinforced concrete foundation of economic benefit or pile cap adopt prestressing force in vertical direction.
The technical solution of the utility model is, design a kind of reinforced concrete foundation or pile cap, it comprises superstructure and direct foundation or pile foundation, it is characterized in that: be inlaid with prestressed reinforcement in basis or the reinforced concrete pile caps on the reinforced concrete that connects under superstructure.
Described reinforced concrete foundation is a hollow structure from round platform, and the even vertical distribution of prestressed reinforcement is on the interior cylinder of hollow structure.
Pile cap top is the cylindrical structural of hollow on the described reinforced concrete, and the cylindrical bottom of hollow is an enclosed planar, is connected with several stakes under enclosed planar; The even vertical distribution of prestressed reinforcement is in the interior cylinder of hollow.
This structure adopts prestressed reinforcement to replace plain bars, and the intensity of prestressed reinforcement is 3～5 times of plain bars, and steel using amount reduces relatively, in addition the corresponding minimizing of crack developing width or do not produce the crack.
Characteristics of the present utility model are: the crack for fear of reinforced concrete foundation or pile cap occurs too early, make full use of high strength cast iron and strong concrete, manage before concrete structure or member bear service load, concrete to the tensile region imposes compressive pre-stress in advance, concrete compressive stress vanishing stress or very little tensile stress when work, far away little and conventional way reinforced concrete foundation or pile cap.
The utility model adopts compressive pre-stress to reduce or offsets the caused concrete pulling stress of load, thereby the tensile stress of structural element is controlled at more among a small circle, even be in pressured state, with the appearance of postponing distress in concrete with carry out, thereby improve the cracking resistance and the rigidity of member.
Characteristics of the present utility model are: do not need reserving hole channel, also needn't grouting, easy construction, fast, cost is lower, be easy to apply.
Its advantage is: 1, crack resistance is good, and rigidity is big.Because member is applied prestressing force, postponed the appearance in crack greatly, under the service load effect, the crack can not appear in member, or makes the crack postpone appearance, so improved the rigidity of member, has increased durability of structures.
2, save material, reduce deadweight.Therefore its structure can reduce amount of reinforcement and member section size owing to must adopt high-strength material, saves steel and concrete, reduces dead load, and large span and heavy load structure are had obvious superiority.
3, improve the shear resistance of member.Test shows that the longitudinal prestressing reinforcing bar plays a part crab-bolt, the appearance that hampers the member diagonal crack with carry out.
4, improve Stability of Compressional Member.When the compressed member slenderness ratio is big, just be bent easily behind the fixed pressure being subjected to, so that forfeiture is stable and destroy.If reinforced concrete post is applied prestressing force, it is very tight that the longitudinal stress reinforced bar stretching is got, and not only prestressed reinforcement itself is not easy to bend, and the concrete around can helping improves the ability that opposing is bent.
5, improve the fatigue performance of member.Because have powerful prestressed reinforcing bar, less relatively because of loading or the caused STRESS VARIATION amplitude of off-load in operational phase, so can improve fatigue resistance, this is very favourable to the structure of bearing dynamic load.
Reinforced concrete foundation or pile cap adopt prestressing force in vertical direction, make full use of the characteristic of prestressed reinforcement, and basis or pile cap increased basis or pile cap cracking resistance and anti-inclining property not increasing steel using amount or reduce under the situation of steel using amount, makes that simultaneously the stability of superstructure is better.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is described further.
Fig. 1 is that the prestressing force floor map is adopted in vertical direction in embodiment 1 direct foundation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is that embodiment 2 pile foundations adopt the prestressing force floor map in vertical direction;
Fig. 4 is the B-B sectional view of Fig. 3.
Among the figure: 1, reinforced concrete foundation; 2, prestressed reinforcement; 3, ground; 4, superstructure; 5, reinforced concrete pile caps; 6, stake.
The specific embodiment
Claims (3)
1, reinforced concrete foundation or pile cap, it comprises superstructure and direct foundation, bottom or pile foundation, it is characterized in that: be inlaid with prestressed reinforcement (2) in reinforced concrete spread foundation (1) that connects under superstructure (4) or the reinforced concrete pile caps (5).
2, according to described reinforced concrete foundation of claim 1 or pile cap, it is characterized in that: described reinforced concrete foundation (1) round platform upper end is hollow structure, and the even vertical distribution of prestressed reinforcement (2) is on the interior cylinder of hollow structure.
3, according to described reinforced concrete foundation of claim 1 or pile cap, it is characterized in that: described reinforced concrete pile caps (5) is the cylindrical structural of hollow, and the cylindrical bottom of hollow is an enclosed planar, is connected with several stakes (6) under enclosed planar; The even vertical distribution of prestressed reinforcement (2) is on the interior cylinder of hollow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200329530U CN201411704Y (en) | 2009-05-06 | 2009-05-06 | Reinforced concrete foundation or pile cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200329530U CN201411704Y (en) | 2009-05-06 | 2009-05-06 | Reinforced concrete foundation or pile cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201411704Y true CN201411704Y (en) | 2010-02-24 |
Family
ID=41713591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200329530U Expired - Lifetime CN201411704Y (en) | 2009-05-06 | 2009-05-06 | Reinforced concrete foundation or pile cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201411704Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975622A (en) * | 2015-07-18 | 2015-10-14 | 兰州理工大学 | Correction and reinforcement method for precast pile foundation of high-rise building |
| CN104988944A (en) * | 2015-07-17 | 2015-10-21 | 中国能源建设集团云南省电力设计院有限公司 | Prestressed anchor bolt type annular draught fan foundation |
| CN106120838A (en) * | 2016-06-30 | 2016-11-16 | 河北省电力勘测设计研究院 | A kind of basic constructional design method of the gravity type spread foundation of vertical shaft fan |
-
2009
- 2009-05-06 CN CN2009200329530U patent/CN201411704Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988944A (en) * | 2015-07-17 | 2015-10-21 | 中国能源建设集团云南省电力设计院有限公司 | Prestressed anchor bolt type annular draught fan foundation |
| CN104975622A (en) * | 2015-07-18 | 2015-10-14 | 兰州理工大学 | Correction and reinforcement method for precast pile foundation of high-rise building |
| CN104975622B (en) * | 2015-07-18 | 2017-01-11 | 兰州理工大学 | Correction and reinforcement method for precast pile foundation of high-rise building |
| CN106120838A (en) * | 2016-06-30 | 2016-11-16 | 河北省电力勘测设计研究院 | A kind of basic constructional design method of the gravity type spread foundation of vertical shaft fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HYDROCHINA XIBEI ENGINEERING CORPORATION Free format text: FORMER NAME: NORTHWEST HYDROELECTRIC INVESTIGATION + DESIGN INSTITUTE OF CHINA HYDROPOWER ENGINEERING CONSULTING Owner name: CHINA ELECTRIC POWER CONSTRUCTION GROUP NORTHWEST Free format text: FORMER NAME: HYDROCHINA XIBEI ENGINEERING CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710065 Shaanxi Province, Xi'an City Road eight No. 18 Patentee after: POWERCHINA NORTHWEST ENGINEERING Co.,Ltd. Address before: 710065 Shaanxi Province, Xi'an City Road eight No. 18 Patentee before: NORTHWEST HYDRO CONSULTING ENGINEERS, CHECC |
|
| CP03 | Change of name, title or address |
Address after: 710065 Shaanxi Province, Xi'an City Road eight No. 18 Patentee after: NORTHWEST HYDRO CONSULTING ENGINEERS, CHECC Address before: 710065 Shaanxi Province, Xi'an City Road eight No. 18 general survey and Design Institute of the Northwest Office Patentee before: Northwest Hydro Consulting Engineers, CHECC |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100224 |
|
| CX01 | Expiry of patent term |