CN202416706U - Tensioning device for bonded and unbonded combined pre-stressed concrete beam of post-pouring belt - Google Patents
Tensioning device for bonded and unbonded combined pre-stressed concrete beam of post-pouring belt Download PDFInfo
- Publication number
- CN202416706U CN202416706U CN2011205642815U CN201120564281U CN202416706U CN 202416706 U CN202416706 U CN 202416706U CN 2011205642815 U CN2011205642815 U CN 2011205642815U CN 201120564281 U CN201120564281 U CN 201120564281U CN 202416706 U CN202416706 U CN 202416706U
- Authority
- CN
- China
- Prior art keywords
- hinge line
- steel hinge
- bonded
- prestressing
- bondn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Reinforcement Elements For Buildings (AREA)
Abstract
The utility model belongs to a tensioning device for a bonded and unbonded combined pre-stressed concrete beam of a post-pouring belt. The tensioning device is characterized by comprising an unbonded pre-stressed steel stranded wire, a bonded pre-stressed steel stranded wire, an unbonded pre-stressed steel stranded wire fixing bracket and a bonded pre-stressed steel stranded wire fixing bracket, wherein both the unbonded pre-stressed steel stranded wire fixing bracket and the bonded pre-stressed steel stranded wire fixing bracket are arranged in the same frame beam which is vertical to the post-pouring belt, the unbonded pre-stressed steel stranded wire is arranged on the unbonded pre-stressed steel stranded wire fixing bracket, and the bonded pre-stressed steel stranded wire is arranged on the bonded pre-stressed steel stranded wire fixing bracket. The tensioning device has the advantages that the construction period can be shortened, the loss of prestress of a pre-stressed concrete member can be reduced, and the respective advantages of the bonded pre-stressed steel stranded wire and the unbonded pre-stressed steel stranded wire can be played.
Description
Technical field
The utility model relates to a kind of tensioning equipment that there is bonding at the place, ater-casting and does not have bonding combined prestress concrete beam that is used for.
Background technology
The use of new material and new technology is that country widelys popularize in building trade; Building energy-saving (economize steel, economize cement) design is widelyd popularize; The prestressed structure form of large span is used in various building structure in a large number; Become the direction of modern designs research, construction technology research tracking, and progressively obtain promotion and application.But in practical project is used, employing be single have bonding or prestressing without bondn form of structure, though reached the certain designed effect, there is a following engineering difficult problem in single prestressed structure form:
1, the bonded prestress steel strand are because of the friction in bellows (friction between steel strand friction, steel strand and the tube wall each other, steel strand and the friction of bellows bleeding), and loss of prestress is bigger;
2, the bonded prestress effect is relatively good, but fluctuating stress loss in time is bigger;
Though it is 3, un-bonded prestressed steel strand has protective sleeve and loss of prestress is less, should technology higher to stretch-draw end ground tackle quality, performance demands;
4, un-bonded prestressed steel strand is because the sheath protection can be slided, and its intensity can not play one's part to the full in beam.
Summary of the invention
The purpose of the utility model is to be to provide place, a kind of ater-casting that the tensioning equipment that bonds and do not have bonding combined prestress concrete beam is arranged, but this tensioning equipment reduction of erection time can be brought into play bonded prestress steel hinge line and prestressing without bondn steel hinge line advantage separately.
For realizing above-mentioned purpose; The technical scheme that the utility model is taked is: there is bonding at the place, ater-casting and does not have the tensioning equipment of bonding combined prestress concrete beam, it is characterized in that it comprises prestressing without bondn steel hinge line, bonded prestress steel hinge line, prestressing without bondn steel hinge line fixed support, bonded prestress steel hinge line fixed support; Prestressing without bondn steel hinge line fixed support is with in bonded prestress steel hinge line fixed support all is provided with the same Vierendeel girder vertical with the ater-casting; The prestressing without bondn steel hinge line is arranged on the prestressing without bondn steel hinge line fixed support, and the bonded prestress steel hinge line is arranged on the bonded prestress steel hinge line fixed support; One end of bonded prestress steel hinge line is arranged at the set a roof beam in place haunch concrete place of both sides and link to each other with the sealing off and covering anchorage end (ground tackle) of bonded prestress steel hinge line of underfloor square frame; One end of prestressing without bondn steel hinge line is fixed in the top of floor and links to each other with the sealing off and covering anchorage end (ground tackle) of prestressing without bondn steel hinge line, and the other end of bonded prestress steel hinge line and prestressing without bondn steel hinge line all is fixed on the side column or side bar of building.
It is to be provided with bonded prestress steel hinge line and prestressing without bondn steel hinge line in the same Vierendeel girder that described roped party is closed prestressed concrete beam, is called the combined prestress concrete beam.
The utility model belongs to the civil construction project field; The steel hinge line of bonded prestress to the effect that and the prestressing without bondn steel hinge line of research are tied two-in-one combined prestress concrete beam construction technology, and first, prestressing technique at home and abroad is used widely.But be the single application structure form of bonded prestress steel hinge line and prestressing without bondn steel hinge line; With single prestressing force form relatively this combined prestress concrete beam technology have remarkable advantages, bonding is arranged and do not have the two-in-one combined prestress concrete beam of bonding and more can embody both advantages; The second, the method for installation of the layout of combined prestress concrete beam and stretch-draw is more flexible, greatly reduces construction difficulty and construction cost.
This innovative technology construction technology is novel; Solved following problem in the construction: 1. there is bonding at the place, ater-casting and does not have the two-in-one prestressed concrete beam of bonding and use; Fully complementation has bonding and prestressing without bondn advantage separately, and the minimizing beam is the degree of disturbing under the load action in use; Solved the big (40kN/m of preloading load
2) a designing requirement difficult problem; This method can reduce the loss of prestress of prestressed concrete, gives full play to bonding and un-bonded prestressed steel strand advantage separately.2. place, ater-casting bonded prestress steel hinge line stretch-draw end layout, installation, stretch-draw problem have been solved; 3. solved the problem of place, ater-casting prestressing without bondn steel hinge line layout, installation, stretch-draw; 4. combined prestress concrete beam construction speed and cost problem have been solved.
Because the structure overlength reaches optimum state in order to guarantee prestress wire in the stress of the whole frame construction of pulling anchor cable stage, whole prestressing force floor structure will utilize the ater-casting to separate stretch-draw.If the stretch-draw end in stride the ater-casting is at the bottom of plate, the constructor will arrive and operate quite difficulty in the scaffold, not only delays the duration, and it is long that circulation material also overstocks the time.Therefore the prestressing force pull end of ater-casting has been selected following processing mode: the prestressing force steel hinge line stretch-draw end that bonding is arranged is plate bottom application worker, and un-bonded prestressed steel strand is constructed onboard.It is original 1/3 to arrange the duration to shorten like this, for removing support body in advance assurance is provided.Upstairs the stretch-draw prestressing force steel hinge line can not only be ensured the quality of products, and need not set up job platform, more can guarantee safety.
The beneficial effect of the utility model is: but this tensioning equipment reduction of erection time.The application that bonds and do not have the two-in-one combined prestress concrete beam of bonding is arranged; Can further reduce the loss of prestress of prestressed concrete; Further reduce the prestressed concrete beam degree of disturbing under the load action in use; Give full play to bonded prestress steel hinge line and prestressing without bondn steel hinge line advantage separately, compensation inferior position separately meets design requirement greatly.
Description of drawings
Fig. 1 is the combined prestress concrete beam arrangement diagram (among the figure main frame beam be the combined prestress concrete beam) in length and breadth of the utility model;
Fig. 2 is stretch-draw end figure under place, the ater-casting combined prestress concrete beam plate; (post among the figure is the post under the floor plate);
Fig. 3 is that the place, ater-casting has the tensioning equipment floor map that bonds and do not have bonding combined prestress concrete beam; (among the figure, 24 of bonded prestress steel hinge line 2 bundles, 4 of prestressing without bondn steel hinge line 2 bundles);
Fig. 4 is an E-E sectional view among Fig. 3;
Fig. 5 is a F-F sectional view among Fig. 3;
Among the figure: A, B, C, D district are that two floor plates are divided block by the ater-casting; 1-prestressing without bondn steel hinge line; 2-bonded prestress steel hinge line, 3-ater-casting, 5-interior card pull end, 6-floor (or claiming floor plate), 7-Vierendeel girder, 8-post, the sealing off and covering anchorage end of 9-bonded prestress steel hinge line, 10-haunch concrete, the sealing off and covering anchorage end of 11-prestressing without bondn steel hinge line.
The specific embodiment
Shown in Fig. 1-5; There is bonding at the place, ater-casting and does not have the tensioning equipment of bonding combined prestress concrete beam, and it comprises prestressing without bondn steel hinge line 1, bonded prestress steel hinge line 2, prestressing without bondn steel hinge line fixed support, bonded prestress steel hinge line fixed support; Prestressing without bondn steel hinge line fixed support and bonded prestress steel hinge line fixed support all are provided with in the same Vierendeel girder 7 vertical with ater-casting 3; Prestressing without bondn steel hinge line 1 is arranged on the prestressing without bondn steel hinge line fixed support, and bonded prestress steel hinge line 2 is arranged on the bonded prestress steel hinge line fixed support; One end of bonded prestress steel hinge line 2 is arranged at haunch concrete 10 places of floor 6 below Vierendeel girders 7 both sides and links to each other with the sealing off and covering anchorage end (ground tackle) 9 of bonded prestress steel hinge line; One end of prestressing without bondn steel hinge line 1 is fixed in the top of floor 6 and links to each other with the sealing off and covering anchorage end (ground tackle) 11 of prestressing without bondn steel hinge line, and the other end of bonded prestress steel hinge line 2 and prestressing without bondn steel hinge line 1 all is fixed on the side column or side bar of building.
Shown in Fig. 1-5, there is bonding at the place, ater-casting and does not have the method for stretching of bonding combined prestress concrete beam, and it comprises the steps:
1) during the reinforcing bar binding of the Vierendeel girder 7 below the floor 6 of building; In the same Vierendeel girder 7 vertical, prestressing without bondn steel hinge line fixed support and bonded prestress steel hinge line fixed support are set with ater-casting 3; On prestressing without bondn steel hinge line fixed support, prestressing without bondn steel hinge line 1 is set, bonded prestress steel hinge line fixed support is provided with binding prestress steel hinge line 2;
One end of bonded prestress steel hinge line 2 is arranged at haunch concrete 10 places of floor 6 below Vierendeel girders 7 both sides; One end of prestressing without bondn steel hinge line 1 be fixed in floor 6 above, the other end of bonded prestress steel hinge line 2 and prestressing without bondn steel hinge line 1 all is fixed on the side column or side bar of building;
One end of prestressing without bondn steel hinge line 1 link to each other with the sealing off and covering anchorage end (ground tackle) 11 of prestressing without bondn steel hinge line on being arranged on floor 6 (being arranged on the top of floor 6); One end of bonded prestress steel hinge line 2 link to each other with the sealing off and covering anchorage end (ground tackle) 9 of the bonded prestress steel hinge line that is arranged on floor 6 belows (being arranged on haunch concrete 10 places);
2) concrete and the haunch concrete 10 of elder generation's cast Vierendeel girder 7; Pour into a mould the concrete of floor 6 again; The sealing off and covering anchorage end 11 of prestressing without bondn steel hinge line be positioned at floor 6 above, the sealing off and covering anchorage end 9 of bonded prestress steel hinge line is positioned on the haunch concrete (back-up block) 10 of floor 6 below Vierendeel girders 7 both sides;
3) when Vierendeel girder 7 and floor 6 reach its design strength 75% the time; Prestressing without bondn steel hinge line 1 on the pretensioning floor 6; Stop stretch-draw after meeting design requirement, an end of prestressing without bondn steel hinge line 1 is tight with prestressing without bondn steel hinge line 1 anchor at sealing off and covering anchorage end 11 places of prestressing without bondn steel hinge line; The bonded prestress steel hinge line 2 of stretch-draw floor 6 belows then; Stop stretch-draw after meeting design requirement, an end of bonded prestress steel hinge line 2 at sealing off and covering anchorage end 9 places of bonded prestress steel hinge line with ground tackle with bonded prestress steel hinge line 2 anchors tight (other end of bonded prestress steel hinge line 2 and prestressing without bondn steel hinge line 1 all is fixed in ground tackle on the side column or side bar of building).
Claims (1)
1. there is the tensioning equipment that bonds and do not have bonding combined prestress concrete beam at the place, ater-casting, it is characterized in that it comprises prestressing without bondn steel hinge line (1), bonded prestress steel hinge line (2), prestressing without bondn steel hinge line fixed support and bonded prestress steel hinge line fixed support; Prestressing without bondn steel hinge line fixed support is with in bonded prestress steel hinge line fixed support all is arranged at the same Vierendeel girder (7) vertical with ater-casting (3); Prestressing without bondn steel hinge line (1) is arranged on the prestressing without bondn steel hinge line fixed support, and bonded prestress steel hinge line (2) is arranged on the bonded prestress steel hinge line fixed support; The haunch concrete (10) that one end of bonded prestress steel hinge line (2) is arranged at Vierendeel girder (7) both sides, floor (6) below is located and is linked to each other with the sealing off and covering anchorage end (9) of bonded prestress steel hinge line; One end of prestressing without bondn steel hinge line (1) is fixed in the top of floor (6) and links to each other with the sealing off and covering anchorage end (11) of prestressing without bondn steel hinge line, and the other end of bonded prestress steel hinge line (2) and prestressing without bondn steel hinge line (1) all is fixed on the side column or side bar of building.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205642815U CN202416706U (en) | 2011-12-29 | 2011-12-29 | Tensioning device for bonded and unbonded combined pre-stressed concrete beam of post-pouring belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205642815U CN202416706U (en) | 2011-12-29 | 2011-12-29 | Tensioning device for bonded and unbonded combined pre-stressed concrete beam of post-pouring belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202416706U true CN202416706U (en) | 2012-09-05 |
Family
ID=46741484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205642815U Expired - Fee Related CN202416706U (en) | 2011-12-29 | 2011-12-29 | Tensioning device for bonded and unbonded combined pre-stressed concrete beam of post-pouring belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202416706U (en) |
-
2011
- 2011-12-29 CN CN2011205642815U patent/CN202416706U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100536489B1 (en) | Manufacturing method for prestressed steel composite girder and prestressed steel composite girder thereby | |
| CN108677685B (en) | Ultra-high-performance concrete-part steel beam combined bent cap and construction method thereof | |
| KR101171039B1 (en) | Partially and fully earth-anchored cable-stayed bridge using main span prestressing appratus and construction method for the same | |
| CN201746774U (en) | Cable-stayed bridge cable tower anchorage zone steel bracket with assembled anchoring device | |
| CN203729193U (en) | Low tower stay cable reinforced T-type rigid framework system with suspension beams | |
| CN101787738B (en) | Stair connection joint device | |
| CN203007856U (en) | External prestressing reinforcement system for hollow slab girder bridge | |
| CN102021889A (en) | Bridge erection method | |
| KR101198812B1 (en) | composite rahmen bridge using a preflex girder | |
| CN103046463B (en) | Assembly type saddle-shell-shaped bottom plate continuous box girder bridge and construction method thereof | |
| CN106639355A (en) | Reinforced concrete beam structure | |
| WO2011005009A3 (en) | Upper part structure for a continuous bridge, which efficiently supports negative moment and has improved constructability, and method for constructing same | |
| CN113638304B (en) | Concrete beam type bridge hidden cover beam structure system and construction method thereof | |
| CN109811948A (en) | A kind of dual-prestressed composite frame of large span and floor system and construction method | |
| CN219034078U (en) | Protective structure for slow-bonding prestressed reinforcement sheath rib groove | |
| CN102535861B (en) | Tensioning method for bonded and unbonded combination prestress concrete beams at post-cast strip | |
| CN105544415A (en) | Concrete bridge reinforcing method and structure | |
| CN212175458U (en) | Prefabricated bent cap and track traffic elevated station hall layer frame thereof | |
| CN103306495A (en) | Wood structure cutting column reinforcing construction method | |
| CN210621476U (en) | Segment prefabricated bent cap cantilever assembling construction device | |
| CN202416706U (en) | Tensioning device for bonded and unbonded combined pre-stressed concrete beam of post-pouring belt | |
| CN107142830B (en) | Steel pipe web prestress steel-concrete combined girder structure and construction method | |
| JP2003213623A6 (en) | Bridge superstructure | |
| CN202416701U (en) | Combined pre-stressed concrete beam with binder and no binder | |
| CN211645915U (en) | Prefabricated prestressed steel and concrete splicing simply-supported combined box girder |
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 |
Granted publication date: 20120905 Termination date: 20191229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |