CN202416701U - Combined pre-stressed concrete beam with binder and no binder - Google Patents
Combined pre-stressed concrete beam with binder and no binder Download PDFInfo
- Publication number
- CN202416701U CN202416701U CN2011205642730U CN201120564273U CN202416701U CN 202416701 U CN202416701 U CN 202416701U CN 2011205642730 U CN2011205642730 U CN 2011205642730U CN 201120564273 U CN201120564273 U CN 201120564273U CN 202416701 U CN202416701 U CN 202416701U
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- hinge line
- steel hinge
- prestressing
- prestress
- binder
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Abstract
The utility model relates to a pre-stressed concrete beam of buildings. The combined pre-stressed concrete beam with a binder and no the binder comprises a frame beam of the building, and is characterized in that a pre-stressed stranded steel wire without a binder and a pre-stressed stranded steel wire with the binder are arranged in the same frame beam. The combined pre-stressed concrete beam can exert individual advantages of the pre-stressed stranded steel wire with the binder and the pre-stressed stranded steel wire without the binder.
Description
Technical field
The utility model relates to a kind of prestressed concrete beam of building.
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 when stress application;
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 a kind of bonding to be arranged and do not have bonding combined prestress concrete beam, and this combined prestress concrete beam 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: bonding is arranged and do not have bonding combined prestress concrete beam; It comprises the Vierendeel girder of building, it is characterized in that being provided with in the same Vierendeel girder prestressing without bondn steel hinge line and bonded prestress steel hinge line.
Described prestressing without bondn steel hinge line is 4, and described bonded prestress steel hinge line is 2 bundles (24).
The utility model belongs to the civil construction project field, and the steel hinge line of bonded prestress to the effect that of research and prestressing without bondn steel hinge line are tied two-in-one combined prestress concrete beam, 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.
Solved following problem in the construction: 1. there is bonding at ater-casting place and does not have the two-in-one prestressed concrete beam of bonding and use, and 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.
The beneficial effect of the utility model is: adopt and be provided with prestressing without bondn steel hinge line and bonded prestress steel hinge line in the same Vierendeel girder, this combined prestress beam can be brought into play bonded prestress steel hinge line and prestressing without bondn steel hinge line advantage separately.
Description of drawings
Fig. 1 is bonding being arranged and not having the arrangement diagram (among the figure main frame beam be the combined prestress beam) in length and breadth of bonding combined prestress concrete beam of the utility model;
Fig. 2 is that the utility model embodiment 1 has the profile that bonds and do not have bonding combined prestress concrete beam;
Fig. 3 is that the utility model embodiment 2 has the profile that bonds and do not have bonding combined prestress concrete beam;
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, 4-floor (or claiming floor plate), 5-Vierendeel girder.
The specific embodiment
Embodiment 1:
Like Fig. 1, shown in Figure 2; Bonding is arranged and do not have bonding combined prestress concrete beam; It comprises Vierendeel girder 5, prestressing without bondn steel hinge line 1 and the bonded prestress steel hinge line 2 of building; Be provided with prestressing without bondn steel hinge line 1 and bonded prestress steel hinge line 2 (prestressing without bondn steel hinge line 1 and bonded prestress steel hinge line 2 are cast in the Vierendeel girder) in the same Vierendeel girder 5 when pouring into a mould the concrete of Vierendeel girder.The two ends of prestressing without bondn steel hinge line 1 and bonded prestress steel hinge line 2 link to each other with ground tackle respectively (after the bonded prestress steel hinge line passes bellows by the prestressing force steel hinge line; Bellows interior is carried out slip casting, and injecting cement paste is linked to be integral body with bellows and prestress wire).
Described prestressing without bondn steel hinge line is 4 and is arranged to two rows; Form first row and second row; Described bonded prestress steel hinge line is that 2 bundles are arranged in the 3rd row, and it is (inner, or claim the middle part that the prestressing without bondn steel hinge line is positioned at the inner edge in the cross section of Vierendeel girder; Between the 2 bundle bonded prestress steel hinge lines), the bonded prestress steel hinge line is positioned at the both sides (a branch of) in the cross section of Vierendeel girder on one side.
Embodiment 2:
As shown in Figure 3; Bonding is arranged and do not have bonding combined prestress concrete beam; It comprises Vierendeel girder 5, prestressing without bondn steel hinge line 1 and the bonded prestress steel hinge line 2 of building, is provided with prestressing without bondn steel hinge line 1 and bonded prestress steel hinge line 2 in the same Vierendeel girder 5.The two ends of prestressing without bondn steel hinge line 1 and bonded prestress steel hinge line 2 link to each other with ground tackle respectively.
Described prestressing without bondn steel hinge line is 4 and is arranged to first row; Described bonded prestress steel hinge line is that 2 bundles are arranged to second row; It is (inner that the prestressing without bondn steel hinge line is positioned at the inner edge in cross section of Vierendeel girder; Or claim the middle part, and between the 2 bundle bonded prestress steel hinge lines), the bonded prestress steel hinge line is positioned at the both sides (a branch of) in the cross section of Vierendeel girder on one side.
Being provided with of ground tackle can have various ways, all can be fixed in like ground tackle on the side column or side bar of building; Perhaps ground tackle just is arranged on the Vierendeel girder.Being provided with of ground tackle can also be adopted: the haunch concrete (back-up block) that an end of bonded prestress steel hinge line 2 is arranged on the floor 4 below Vierendeel girders 5 is located; One end of prestressing without bondn steel hinge line 1 be fixed in floor 4 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.
Claims (3)
1. bonding is arranged and do not have bonding combined prestress concrete beam, it comprises the Vierendeel girder of building, it is characterized in that being provided with in the same Vierendeel girder prestressing without bondn steel hinge line and bonded prestress steel hinge line.
2. according to claim 1 have bonding and do not have bonding combined prestress concrete beam; It is characterized in that: described prestressing without bondn steel hinge line is 4 and is arranged to two rows; Form first row and second row; Described bonded prestress steel hinge line is that 2 bundles are arranged in the 3rd row, and the prestressing without bondn steel hinge line is positioned at the inner edge in the cross section of Vierendeel girder, and the bonded prestress steel hinge line is positioned at the both sides in the cross section of Vierendeel girder.
3. according to claim 1 have bonding and do not have bonding combined prestress concrete beam; It is characterized in that: described prestressing without bondn steel hinge line is 4 and is arranged to first row; Described bonded prestress steel hinge line is that 2 bundles are arranged to second row; The prestressing without bondn steel hinge line is positioned at the inner edge in the cross section of Vierendeel girder, and the bonded prestress steel hinge line is positioned at the both sides in the cross section of Vierendeel girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205642730U CN202416701U (en) | 2011-12-29 | 2011-12-29 | Combined pre-stressed concrete beam with binder and no binder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205642730U CN202416701U (en) | 2011-12-29 | 2011-12-29 | Combined pre-stressed concrete beam with binder and no binder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202416701U true CN202416701U (en) | 2012-09-05 |
Family
ID=46741479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205642730U Expired - Fee Related CN202416701U (en) | 2011-12-29 | 2011-12-29 | Combined pre-stressed concrete beam with binder and no binder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202416701U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924683A (en) * | 2014-04-14 | 2014-07-16 | 北京工业大学 | Prestress connected concrete beam rectangular steel tube concrete column node |
| CN113529940A (en) * | 2021-06-25 | 2021-10-22 | 吉林建筑大学 | Prestress assembly type manual hinge, self-adaptive damping structure system and construction method thereof |
-
2011
- 2011-12-29 CN CN2011205642730U patent/CN202416701U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924683A (en) * | 2014-04-14 | 2014-07-16 | 北京工业大学 | Prestress connected concrete beam rectangular steel tube concrete column node |
| CN113529940A (en) * | 2021-06-25 | 2021-10-22 | 吉林建筑大学 | Prestress assembly type manual hinge, self-adaptive damping structure system and construction 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: 20120905 Termination date: 20191229 |