CN2584695Y - Structural ribbon strip in prestressed hollow board - Google Patents
Structural ribbon strip in prestressed hollow board Download PDFInfo
- Publication number
- CN2584695Y CN2584695Y CN 02288789 CN02288789U CN2584695Y CN 2584695 Y CN2584695 Y CN 2584695Y CN 02288789 CN02288789 CN 02288789 CN 02288789 U CN02288789 U CN 02288789U CN 2584695 Y CN2584695 Y CN 2584695Y
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- China
- Prior art keywords
- girt strip
- steel bar
- bar stress
- hollow section
- upper strata
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Abstract
The utility model discloses a structural ribbon strip in a prestressed hollow board, which is composed of a ribbon strip stirrup, bearing steel bars on the upper layer of the board, distributed steel bars on the upper layer of the board, hollow tube limiting steel bars, distributed steel bars on the lower layer of the board, bearing steel bars on the lower layer of the board, a hollow tube and prestressing tendons. The utility model alters the relationship of the bearing steel bars and the distributed steel bars, and the intervals among the bearing steel bars are not harmonious; the ribbon strip stirrup plays roles of limiting the horizontal displacement of the hollow tube, making convenience for the positioning of the prestressing tendons, limiting the upward floating of the hollow tube, enhancing the shear resisting and impact and cut resisting ability, etc., and the utility model has the advantages of good economical efficiency and adaptability.
Description
The utility model belongs to the building floor technical field.
Using hollow section in the cast-in-situ floor is a technology that developed in recent years, and in existing hollowcore slab (comprising prestressing force and non-prestressed) design and construction technology, generally be the bearing rod that the upper and lower band crotch of 1-2 root is set between the hollow section, upper and lower two-layer reinforced mesh is coupled together.By this method for designing construction, be colligation bearing rod after having spread hollow section, building the top mat sheet.The defective of this way is: (1) has spread behind the hollow section steel flxer will stretch out one's hand operation at the bottom of the plate, damages hollow section easily; (2) hollow section lacked horizontal restraint before the colligation bearing rod, positioning easily, and the while also influences the position of top mat sheet; (3) for the pre-stress hollow tubular structure, the bad location of presstressed reinforcing steel.
The purpose of this utility model is to propose to improve at the defective in the present hollowcore slab design and construction, and the girt strip of the structure in a kind of prestressed cored slab is provided.This structure girt strip mainly is made up of stirrup, steel bar stress, distribution reinforcement, spacing reinforcing bar and hollow section etc., can limit the horizontal movement of hollow section effectively, have the location, restriction hollow section come-up, enhancing hollowcore slab shearing resistance and the anti-impact that make things convenient for presstressed reinforcing steel and cut effects such as ability.
The utility model is realized by following scheme.Closed stirrup is set between hollow section, under the prerequisite that does not increase material, can guarantee construction quality better, reduce hollow section loss, accelerate speed of application, make things convenient for the presstressed reinforcing steel location.The utility model both had been applicable to the prestressed concrete cast-in-situ floor, also was applicable to the ordinary concrete cast-in-situ floor, and the raising of design and construction level is played a driving role, and had excellent economy and applicability.
Below in conjunction with accompanying drawing the utility model is described further.Fig. 1 is the sectional drawing of the utility model in the concrete hollow plated construction.The utility model is made up of rib beam hoop reinforcement (1), girt strip inner panel upper strata steel bar stress (2), girt strip outside plate upper strata steel bar stress (3), plate upper strata distribution reinforcement (4), the spacing reinforcing bar of hollow section (5), plate lower floor distribution reinforcement (6), girt strip inner panel lower floor steel bar stress (7), girt strip outside plate lower floor steel bar stress (8), hollow section (9) for the ordinary concrete cast-in-place hollow slab; Also comprise presstressed reinforcing steel (10) for prestressed cored slab.With reference to accompanying drawing, hollow section is provided with girt strip between (9).Girt strip inner panel upper strata steel bar stress (2) and girt strip outside plate upper strata steel bar stress (3) be positioned at same horizontal plane and be arranged on plate upper strata distribution reinforcement (4) below; Girt strip inner panel lower floor steel bar stress (7) and girt strip outside plate lower floor steel bar stress (8) be positioned at same horizontal plane and be arranged on plate lower floor distribution reinforcement (6) above.Steel bar stress (2) (7) colligation is in stirrup (1).The spacing reinforcing bar of hollow section (5) is transverse in the below of girt strip inner panel upper strata steel bar stress (2).The concrete hollow plate thickness is h, and hollow section (9) diameter is d, and the distance of the upper and lower skin of hollow section (9) surface lies concrete is respectively a1, a2.Adjacent twice hollow section (9) center to center distance is b, and rib beam hoop reinforcement (1) crust is of a size of c.Adjacent rib beam hoop reinforcement (1) crust distance just equals hollow section (9) diameter (being c=b-d), can limit the displacement of the left and right direction of hollow section (9) like this.The spacing reinforcing bar of hollow section (5) passes below girt strip inner panel upper strata steel bar stress (2), limits the displacement that hollow section (9) makes progress.Hollow section (9) limits the length travel of hollow section (9) with the frictional force of rib beam hoop reinforcement (1) and the spacing reinforcing bar of hollow section (5).The spacing reinforcing bar of hollow section (5) is just passable as long as can satisfy restriction hollow section (9) come-up, is generally diameter 6-10mm plain bar, and spacing is 400-1000mm; Presstressed reinforcing steel (10) is arranged in the rib beam hoop reinforcement (1), and presstressed reinforcing steel (10) can be bonding to be arranged or do not have bonding.Rib beam hoop reinforcement (1) plays location and protective effect to presstressed reinforcing steel (10).
The utility model principal rod layout feature is: 1, steel bar stress is just opposite with the upper and lower arrangement relation in the ordinary reinforced concrete structure with the relation of distribution bar.For satisfying " Code for design of concrete structures " (GB50010-2002) about the requirement of reinforcement cover minimum thickness; give full play to the stress performance (arm of force is long as far as possible) of reinforcing bar simultaneously, the upper and lower two parts that require the utility model rib beam hoop reinforcement respectively with plate upper strata distribution reinforcement, plate lower floor distribution reinforcement in same plane.Therefore arrange distribution reinforcement earlier during installation plate lower floor reinforcing bar, arrange steel bar stress again; Arrange steel bar stress during the installation plate top reinforcement earlier, arrange distribution reinforcement again.2, the spacing of steel bar stress is heterogeneous in the plate.The spacing of steel bar stress can not be by the such even layout of ordinary reinforced concrete plate, at first some steel bar stress will be arranged on 4 interior angles of rib beam hoop reinforcement, remaining steel bar stress is configured in the hollow section zone between the girt strip again, therefore the spacing of steel bar stress is heterogeneous, but the sum of unit length configuration should be complementary with hollow section center to center distance (promptly joining several reinforcing bars in each hollow section center to center distance scope).
The effect of the utility model rib beam hoop reinforcement: 1, form a kind of horizontal movement with skeleton restriction hollow section of level and vertical stiffness with the upper and lower layer of girt strip inner panel steel bar stress.2, both made things convenient for the location of presstressed reinforcing steel for the prestressed cored slab rib beam hoop reinforcement, again presstressed reinforcing steel had been played a protective role.3, the spacing reinforcing bar of hollow section passes below the steel bar stress of girt strip inner panel upper strata, and the steel bar stress colligation is in stirrup, so rib beam hoop reinforcement plays the drawknot effect to the anti-floating of hollow section.4, the shearing resistance and the anti-impact that can strengthen hollowcore slab cut ability.
Claims (5)
1, structure girt strip in the prestressed cored slab, by rib beam hoop reinforcement (1), girt strip inner panel upper strata steel bar stress (2), girt strip outside plate upper strata steel bar stress (3), plate upper strata distribution reinforcement (4), the spacing reinforcing bar of hollow section (5), plate lower floor distribution reinforcement (6), girt strip inner panel lower floor steel bar stress (7), girt strip outside plate lower floor steel bar stress (8), compositions such as hollow section (9) and presstressed reinforcing steel (10) and concrete, it is characterized in that between the hollow section (9) girt strip being set, crust between the rib beam hoop reinforcement (1) distance equates with hollow section (9) external diameter, girt strip inner panel upper strata steel bar stress (2) and girt strip outside plate upper strata steel bar stress (3) be positioned at same horizontal plane and be arranged on plate upper strata distribution reinforcement (4) below; Girt strip inner panel lower floor steel bar stress (7) and girt strip outside plate lower floor steel bar stress (8) be positioned at same horizontal plane and be arranged on plate lower floor distribution reinforcement (6) above.
2, the structure girt strip in the prestressed cored slab according to claim 1 is characterized in that steel bar stress (2) (7) colligation is in stirrup (1).
3, the structure girt strip in the prestressed cored slab according to claim 1 is characterized in that the spacing reinforcing bar of hollow section (5) is transverse in the below of girt strip inner panel upper strata steel bar stress (2).
4, according to the structure girt strip in the described prestressed cored slab of claim 1, it is characterized in that presstressed reinforcing steel can be a bonded prestressed tendon, also can be unbonded prestressing tendon.
5,, it is characterized in that steel bar stress in the plate (2) and (3), (7) are heterogeneous with the spacing of (8) according to the structure girt strip in the described prestressed cored slab of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288789 CN2584695Y (en) | 2002-12-09 | 2002-12-09 | Structural ribbon strip in prestressed hollow board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02288789 CN2584695Y (en) | 2002-12-09 | 2002-12-09 | Structural ribbon strip in prestressed hollow board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584695Y true CN2584695Y (en) | 2003-11-05 |
Family
ID=33748550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02288789 Expired - Lifetime CN2584695Y (en) | 2002-12-09 | 2002-12-09 | Structural ribbon strip in prestressed hollow board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584695Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071801A (en) * | 2011-01-10 | 2011-05-25 | 中国建筑第四工程局有限公司 | Positioning method and structure for hollow pipes in concrete hollow slab |
| CN103541480A (en) * | 2013-10-25 | 2014-01-29 | 王本淼 | Construction method for crack-resistant cast-in-situ hollow floor |
| CN105220804A (en) * | 2015-10-23 | 2016-01-06 | 北京建工华创科技发展股份有限公司 | A kind of prefabricated modular composite floor |
-
2002
- 2002-12-09 CN CN 02288789 patent/CN2584695Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071801A (en) * | 2011-01-10 | 2011-05-25 | 中国建筑第四工程局有限公司 | Positioning method and structure for hollow pipes in concrete hollow slab |
| CN103541480A (en) * | 2013-10-25 | 2014-01-29 | 王本淼 | Construction method for crack-resistant cast-in-situ hollow floor |
| CN103541480B (en) * | 2013-10-25 | 2017-06-16 | 王本淼 | A kind of crack resistance cast-in-situ hollow building roof builds up method |
| CN105220804A (en) * | 2015-10-23 | 2016-01-06 | 北京建工华创科技发展股份有限公司 | A kind of prefabricated modular composite floor |
| CN108396897A (en) * | 2015-10-23 | 2018-08-14 | 北京建工华创科技发展股份有限公司 | A kind of prefabricated modular composite floor |
| CN108396897B (en) * | 2015-10-23 | 2019-12-06 | 北京建工华创科技发展股份有限公司 | Prefabricated modular composite floor slab |
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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: 20121209 Granted publication date: 20031105 |
|
| DD01 | Delivery of document by public notice |
Addressee: Xu Yan Document name: Notification of Expiration of Patent Right Duration |