CN2685449Y - External prestressing cable steering structure - Google Patents
External prestressing cable steering structure Download PDFInfo
- Publication number
- CN2685449Y CN2685449Y CN 200420020604 CN200420020604U CN2685449Y CN 2685449 Y CN2685449 Y CN 2685449Y CN 200420020604 CN200420020604 CN 200420020604 CN 200420020604 U CN200420020604 U CN 200420020604U CN 2685449 Y CN2685449 Y CN 2685449Y
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- bore
- steel plate
- putting
- energy
- external prestressing
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Abstract
The utility model provides an external prestressing cable steering structure, which is chiefly poured in concrete members to form a non-inner lining steel pipe; a steering bore adapting to the change of the spatial position of the cable presents a sandglass shape integrally. A plurality of bore passage stiffening steel plates are embedded at the stiffening position of the member along the steering bore; the stiffening steel plate basically keeps the vertical setting with the bore passage, and is provided with through bores according to the configuration of the bore passage; the bore diameter of the through bore of the stiffening steel plate is a little bigger than the diameter of the bore passage of the steering bore; a concrete protection layer is reserved.
Description
Technical field
The utility model relates to a kind of steering structure of external prestressing tendon, especially for the steering structure in the concrete component.
Background technology
External prestressing tendon is arranged on needs the device that turns in the concrete component, generally adopt pre-buried directional curvature steel pipe or hourglass shape steel tubes as steering gear both at home and abroad, and it mainly act as:
1. turn to the pipeline pore-forming;
2. disperse hole wall concrete local compression stress.
But pre-buried directional curvature turns to steel pipe and hourglass shape to turn to steel pipe to be the hot bending steel pipe.Directional curvature turns to steel pipe to need more strictly to control pre-buried precision in the work progress by the different vertically corners and the laterally corner processing customization of external prestressing tendon.Hourglass shape turns to steel pipe can adapt to different vertical, horizontal corners, but it is little that the stable aspect effect of port wall intensity and aperture is strengthened in base plate absorption type duct.And embedded steel tube will reach the duct reinforcement and possess the anti-corrosion ability, must add big steel pipe thickness and antirust processing.
Therefore, at the above-mentioned shortcoming of existing structure, be necessary transfer is done further to improve.
Summary of the invention
The purpose of this utility model is to provide a kind of external prestressing tendon steering structure that is used for concrete component, its easy construction, can improve duct intensity, and can save cost.
For reaching above-mentioned purpose, the technical solution adopted in the utility model turns to structure for a kind of external prestressing tendon is provided, be included in the crossover port of building formation in the concrete component, the rope import department at crossover port two ends is a curved section, mid portion is a flat segments, the aperture of curved section is greater than the aperture of flat segments, and order totally is hourglass shape; Along crossover port at member pre-buried some ducts, position steel plate of putting more energy into of putting more energy into, the steel plate of putting more energy into basic with the vertical setting of duct maintenance, have through hole according to the duct profile, be provided with concrete cover.
The through-hole aperture of the above-mentioned steel plate of putting more energy into is slightly larger than the channel diameter of crossover port.
According to steering structure of the present utility model,, have following advantage than existing steering gear:
1. easy construction.Core is reusable, and one-time-concreting is shaped.
2. improved the duct reinforcing property.Adopt the perforate steel plate, strengthened non-deformability and local strength in the duct normal direction.
3. saving cost.Employing need not the steel and the reusable core of fine finishining, antirust processing, greatly reduces the pore-forming expense.
The accompanying drawing summary
Fig. 1 is the vertical section schematic diagram of steering structure of the present utility model.
Fig. 2 is the schematic cross section of the utility model steering structure.
The specific embodiment
Referring to Fig. 1 and Fig. 2, steering structure of the present utility model mainly is directly to utilize the core (not shown) to build out crossover port 2 in concrete beam body 1.This crossover port 2 belongs to base plate absorption type duct, and in the present embodiment, beam body 1 forms epiplastron 12 above the duct, and both sides form the portion 11 of encorbelmenting.
The rope import department at crossover port 2 two ends is a curved section 21,22, and mid portion is a flat segments 23.Its cross section, duct is for becoming the radius circular section, and the aperture of curved section 21,22 is greater than the aperture of flat segments 23, and order totally is hourglass shape.Along crossover port 2, the steel plate 3 of putting more energy in pre-buried some ducts, the position of putting more energy into of beam body 1.
As shown in Figure 1, according to present embodiment, the position that the portion of encorbelmenting 11 of both sides, duct puts more energy into for the relatively poor need of intensity is so the steel plate 3 of putting more energy into mainly is arranged on the portion of encorbelmenting 11 places of these both sides.Steel plate 3 keeps vertical setting with the duct substantially, and has through hole 31 according to the duct profile, stays concrete cover, and the aperture of through hole 31 is slightly larger than the channel diameter of crossover port 2, is the external tendon fairlead.
This steel plate 3 of putting more energy into can be adjusted the density of stiffener and the thickness of steel plate are set according to the requirement of steering structure bulk strength.For example, no epiplastron 12 above the duct, the duct is adsorbed in another embodiment of base plate entirely, and the steel plate 3 of putting more energy into can be uniform pre-buried along the duct.
Claims (4)
1. an external prestressing tendon turns to structure, it is characterized in that: be included in the crossover port (2) of directly building formation in the concrete component (1), the rope import department at crossover port (2) two ends is a curved section (21,22), mid portion is flat segments (23), the aperture of curved section (21,22) is greater than the aperture of flat segments (23), and order totally is hourglass shape.
2. external prestressing tendon as claimed in claim 1 turns to structure, it is characterized in that: along crossover port (2) at member (1) pre-buried some ducts, position steel plate (3) of putting more energy into of putting more energy into, the steel plate (3) of putting more energy into keeps vertical setting with the duct substantially, and has through hole (31) according to the duct profile.
3. external prestressing tendon as claimed in claim 2 turns to structure, it is characterized in that: this concrete component (1) forms epiplastron (12) in crossover port (2) top, both sides form the portion (11) of encorbelmenting, and the steel plate of putting more energy into (3) is separately positioned on the portion of encorbelmenting (11) of both sides.
4. turn to structure as claim 2 or 3 described external prestressing tendons, it is characterized in that: through hole (31) aperture of the steel plate of putting more energy into (3) is slightly larger than the channel diameter of crossover port (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020604 CN2685449Y (en) | 2004-03-05 | 2004-03-05 | External prestressing cable steering structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020604 CN2685449Y (en) | 2004-03-05 | 2004-03-05 | External prestressing cable steering structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2685449Y true CN2685449Y (en) | 2005-03-16 |
Family
ID=34669343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420020604 Expired - Lifetime CN2685449Y (en) | 2004-03-05 | 2004-03-05 | External prestressing cable steering structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2685449Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348822C (en) * | 2004-03-05 | 2007-11-14 | 上海市城市建设设计研究院 | External prestressed cable turning structure |
| CN104251057A (en) * | 2014-08-20 | 2014-12-31 | 郑州市交通规划勘察设计研究院 | Arc bent plate type bender |
| CN108677756A (en) * | 2018-04-20 | 2018-10-19 | 武汉中交试验检测加固工程有限责任公司 | A kind of external prestressing anchor and its hardened system |
-
2004
- 2004-03-05 CN CN 200420020604 patent/CN2685449Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348822C (en) * | 2004-03-05 | 2007-11-14 | 上海市城市建设设计研究院 | External prestressed cable turning structure |
| CN104251057A (en) * | 2014-08-20 | 2014-12-31 | 郑州市交通规划勘察设计研究院 | Arc bent plate type bender |
| CN108677756A (en) * | 2018-04-20 | 2018-10-19 | 武汉中交试验检测加固工程有限责任公司 | A kind of external prestressing anchor and its hardened system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140305 Granted publication date: 20050316 |