CN201661021U - Prefabricated reinforced concrete stair - Google Patents

Prefabricated reinforced concrete stair Download PDF

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Publication number
CN201661021U
CN201661021U CN2010201319897U CN201020131989U CN201661021U CN 201661021 U CN201661021 U CN 201661021U CN 2010201319897 U CN2010201319897 U CN 2010201319897U CN 201020131989 U CN201020131989 U CN 201020131989U CN 201661021 U CN201661021 U CN 201661021U
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CN
China
Prior art keywords
stair
steel
concrete
prefabricated
reinforced concrete
Prior art date
Application number
CN2010201319897U
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Chinese (zh)
Inventor
张吉华
张晨
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张吉华
张晨
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Application filed by 张吉华, 张晨 filed Critical 张吉华
Priority to CN2010201319897U priority Critical patent/CN201661021U/en
Application granted granted Critical
Publication of CN201661021U publication Critical patent/CN201661021U/en

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Abstract

The utility model is an improvement of the existing prefabricated reinforcement and is characterized in that the two axial sides of the prefabricated stair are of beam structures; stair plates, treads and the two side beams form a whole U-shaped structure; the two ends of the two side beam structures are embedded with a steel-structure connecting and installing connector, which leads force on the treads of the stair and rest platforms to be born by the two side beams. Therefore, the utility model can greatly reduce the thickness of the stair plates and consumption of the reinforcement, not only can greatly reduce the weight of the prefabricated reinforced concrete stair, has high structural strength, can adopt a hollow structure, can reduce the weight of the reinforced concrete stair by about 50% compared with the plate structure by theoretically calculating the weight of the beam structure stair, but also provides structural guarantee for manufacturing large-span stairs. The steel-structure connecting and installing connector is directly connected with a building structure, has simple installation, has structural strength after the installation is finished, and can be used immediately after the installation is finished; the structural strength of the installing connector is high, the installing connector forms a strong node; and the prefabricated reinforced concrete stair has good shearing resistance, torsion resistance and shock resistance, has complete dismountability, and greens buildings.

Description

The prefabricated reinforced concrete stair

Technical field

Utility model relates to a kind of prefabrication steel bar concrete stair, relate in particular to a kind of in light weight, structural strength height, the prefabricated reinforced concrete stair that plug and play, suitable assembled architecture are used.

Background technology

Existing civilian construction are dwelling house, office building for example, the interlayer stair mostly adopt the cast-in-situ reinforced concrete stair, and the building site is cast-in-place not only to need accessory building materials such as a large amount of templates, hack lever, and steel rolling muscle pour concrete is tied up at the scene, long construction period, labour intensity is big, and operating expenses is big, rough surface, difficult quality guarantee, and can not utilize immediately after the cast-in-place stair construction, account for a large amount of construction formworks especially, building costs is higher.

The prefabricated reinforced concrete stair, not only can save the building site and take a large amount of templates, hack lever, and prefabrication can standardized production, and the good size of quality is accurate, and any surface finish can be plastered, also can save for example concrete of constructional materials, the on-the-spot installation, the speed of application fast period is short, reduces the situ wet workload, thereby favored day by day, also meet building construction assemblingization development trend.

The concrete prefabricated stair of Chinese patent CN201217898 are decomposed into concrete staircase stair bench, the superimposed terraced beam of " L " shape, the two end bar landing slabs of band horizontal support bottom surface, two ends.Earlier the superimposed terraced beam of " L " shape is inserted in the peripheral structure hole to be provided during installation, stair bench two end supports is in the superimposed terraced beam groove of " L " shape, landing slab also is held on the superimposed terraced top surface of the beam of " L " shape, connects landing slab and terraced beam bench, and the teeming concrete connects into integral body with bench, landing slab.This prefabricated concrete stair deficiency is: degradable member is many, and a staristep is divided into two planes, a bench, shelves beam for two, the combination trouble not only is installed, does not have utilization structure intensity behind the installation in position, can not use immediately, need the connecting reinforcement pour concrete, and light regular period maintenance; And shelve in the beam insert structure hole to be provided lack with build between overall construction intensity; Particularly this structure is not suitable for total prefabricated construction.

The disclosed precast monolithic formula of Chinese patent CN2349289 stair tread adopts stair step and the conjuncted structure of half space, is embedded with two lifting parts on the half space, and dowel is reserved in the platform termination.During installation, make stair two ends half space reserve dowel and be overlapped in interlayer beam and stair stringer casting-on concrete respectively.Though this structure has reduced the precast stair number of components, its deficiency is: this structure is a slab, and is stressed by the stair inclined bottom plate, thereby enough thickness and more reinforcing bar must be arranged, cause weight big, the cost height, and this structure is not suitable for making greatly highly for example 6 meters floor height large span stair; Still do not have utilization structure intensity after the two stair installations, need be provided with and support or hang holder, welded reinforcement, pour concrete, and could remove after need making the concrete of connecting portion cast reach intensity, fixedly make troubles to installing and locating; The still inapplicable total prefabricated construction of three its structures is used.

Therefore above-mentioned deficiency still has is worth improved place.

The utility model content

The utility model purpose is to overcome the deficiency of above-mentioned prior art, provides a kind of quick and easy for installation, need not support, promptly having structural strength after the installation can use, in light weight, the intensity height, can make the large span stair, the prefabricated reinforced concrete stair that suitable assembled architecture is used.

The utility model purpose realizes that mainly improving one is to change slab into stringer, makes that stair are main stressedly to become both sides joist support load by stair tread; The 2nd, at precast stair beam two ends steel work connection joint is set, directly form strong node structure and be connected (for example be spirally connected or weld), thereby overcome above-mentioned the deficiencies in the prior art, realization utility model purpose with building structure.Specifically, utility model prefabricated reinforced concrete stair, comprise prefabricated reinforced concrete stair step and two ends half space assembly, it is characterized in that the axial both sides of precast stair are girder construction, stair tread and mark time and two curb girders form U type overall structure, two side beam structure two ends are embedded with steel work connection joint.

The steel work connection joint that the stair stringer two ends are pre-buried is mainly used in building structure and is connected, and becomes the strong node that promptly has structural strength after the connection.Its form of structure can have multiple, for example box-shaped steel structure, H formed steel construction etc., wherein a kind of cross structure that is preferably a plane of structure more than or equal to reinforcing cage formation cross section in the beam, and at least in beam major and minor reinforcing bar correspondence position the reach through hole of being used to is respectively arranged, make in the beam each major and minor reinforcing bar pass through hole and form perforation plug welding or connection, this structure helps improving the syndeton intensity of connection joint and stair, becomes strong node structure with the stair concrete.In addition, can also stretch into part in the concrete stair stringer, be connected with some short anchor bars, steel plate, peg, shaped steel etc. and strengthen shearing resistance, torque member, with shearing resistance, the anti-twisting property of further raising steel work connection joint and steel bar concrete connected node at cross.Certainly the steel work jointing of other form of structure also can use.

In addition, because stair are that two side beam structures are stressed, for reducing prefabricated concrete stair weight, a kind of being preferably between stair step and stair tread is designed to hollow structure, interior filling with light material, and for example expanded polystyrene (EPS) piece or other lightweights are filled.Hollow shape, a kind of comparatively with the triangle of the cross section similar shape of marking time; Half space can adopt hollow structure equally, for example the applicant is the double-deck concrete structure of hollow that a plurality of horizontal H connect in cross section described in a plurality of hollow heat-preserving wall of the first to file patent, the i.e. ducted body that constitutes by up and down two layers of steel bar concrete and alternate connecting reinforcement concrete rib, interior filling with light material.This structure not only plays the loss of weight effect, but also has sound absorption, cushioning effect.

Can also be in stair two curb girders pre-buried some tapped steel pipes that are connected with beam steel, the lifting that both can be used for precast stair connects, and screw can also be used for fixing the installation balustrade.

Utility model prefabricated reinforced concrete stair, with respect to prior art, owing to adopt the girder structure precast stair, making that stair step and half space are stressed is carried on a shoulder pole by the both sides joist support, changed the force structure of prior art precast stair, the stair backboard is by load-carrying members, become non bearing structure, thereby can reduce stair tread thickness and amount of reinforcement greatly, prefabricated concrete stair weight is alleviated greatly, and girder construction is stressed, from structure intensity height, both provided the structure guarantee for stair step and half space hollow, reduced concrete stair weight especially, the theoretical girder construction stair weight of calculating can be fallen heavily approximately 50% than plated construction concrete stair, has saved constructional materials, reduce cost, also had deadening; For making the large span stair, provide the structure guarantee again.Steel work connection joint directly is connected with the steel work that building structure is reserved, install simple, only need contraposition to be spirally connected or metal such as welding connects and promptly has structural strength, need not longer-term supports and slings, and install promptly and can use, realize prefabricated concrete stair plug and play, teeming sealing concrete, only be to fill and do not constitute structure, so do not influence uses (only need cover slightly at casting-on concrete position and get final product) behind the casting-on concrete.Steel work connection joint, the structural strength height makes prefabricated concrete stair and structure be connected to become strong node, shearing resistance, antitorque, anti-seismic performance good, and has complete dismoutability, makes building become greenization.

Below in conjunction with a specific embodiment; utility model essence is further understood in exemplary illustration and help; but the embodiment detail only is for utility model is described; do not represent utility model design whole technical schemes down; therefore should not be construed as the total technical scheme of utility model is limited; some are In the view of the technician; the unsubstantiality that does not depart from the utility model design increases and/or change; for example change or replace, all truely use novel protected scope so that technical characterictic with same or similar technique effect is simple.

Description of drawings

Fig. 1 is prefabricated concrete stair vertical profile structural representation.

Fig. 2 is Fig. 1 birds-eye perspective.

Fig. 3 is that Figure 1A is to structural representation.

Fig. 4 is Figure 1B-B cross-sectional view.

Fig. 5 is prefabricated concrete stair volume rendering structural representation.

Fig. 6 is the assembling schematic diagram.

The specific embodiment

Embodiment: referring to accompanying drawing, utility model prefabricated reinforced concrete stair, comprise that both sides rectangle reinforcing cage constitutes concrete stair stringer 1, stair step 3 and two ends half space 4 that the band stiffener is arranged between two beams, and make stair backboard 5 and mark time that reinforcing bar is connected with the both sides beam steel in 3, form the cross section cage of reinforcement that takes the shape of the letter U, make precast stair cross section concrete become U type overall structure.Stair two curb girder two ends are embedded with cross steel work connection joint 7, each longitudinal reinforcement of its central sill forms the perforation plug welding with cross steel work transverse slat 6 and is connected, the overhanging ejecting plate of joint respectively is welded with horizontal steel plate up and down, forms I-shaped structure link, and some bolt apertures are arranged on the riser.Two half spaces 4 at bench two ends are formed shell hollow structure concrete by alternate double steel bar, the stiffener of connection concrete rib 11 is arranged between the concrete plate up and down, forming the cross section is the force structure that a plurality of horizontal H connect, filled polystyrene plate 9 in each hollow channel, 5 of stair step 3 and stair tread are triangle hollow, interior filling triangle building polystyrene board 8.Vertical pre-buried some and beam steel connecting band inner thread steel pipe 10 in stair two curb girders.Cross steel work connection joint stretches into partly has radially short anchor bar, peg etc. to strengthen shearing resistance, torque member (not shown) in the concrete stair stringer.Reinforcing bar is a two-way concrete slab in stair base plate and the half space, and stair arrangement of reinforcement specification is pressed building structural design specification and calculated definite.After reinforcing cage was rolling, cast bottom concrete after the placement filling, was poured into a mould the upper strata concrete more earlier.

The precast stair assembling; prefabricated concrete stair are transported to the building site; in the pre-buried band inner thread steel pipe 10 of beam, screw in the screw thread suspension ring; reserve steel structure connecting member with building structure one by one and dock installation (be spirally connected or weld); promptly have structural strength after the installation, can use, at last connecting portion is poured into a mould compound parcel with concrete; make connected node obtain anti-corrosion protection, fill with concrete in the slit between two landings of stair turning.

To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; the for example change of beam two ends steel structure connecting member planform; the change of interior packing material; or the like unsubstantiality change, can be employed equally, can both realize this patent representation function and effect; launch for example no longer one by one to describe in detail, all belong to this patent protection domain.

Easy on describing, said concrete of this patent and steel bar concrete are synonym.

Claims (7)

1. prefabricated reinforced concrete stair, comprise prefabricated reinforced concrete stair step and two ends half space assembly, it is characterized in that the axial both sides of precast stair are girder construction, stair tread and mark time and two curb girders form U type overall structure, two side beam structure two ends are embedded with steel work connection joint.
2. according to the described prefabricated reinforced concrete stair of claim 1, it is characterized in that steel work connection joint is a plane of structure forms the cross section more than or equal to reinforcing cage in the beam a cross structure, and at least in beam major and minor reinforcing bar correspondence position the reach through hole of being used to is respectively arranged, make in the beam each major and minor reinforcing bar pass through hole and form perforation plug welding or connection.
3. according to the described prefabricated reinforced concrete stair of claim 1, it is characterized in that steel work connection joint stretches into that part radially has short anchor bar, steel plate, peg, shaped steel etc. to strengthen shearing resistance, torque members in the concrete stair stringer.
4. according to the described prefabricated mixed steel bar concrete ladder of claim 1, it is characterized in that hollow between stair step and stair tread, interior filling with light material.
5. according to the described prefabricated mixed steel bar concrete ladder of claim 4, it is characterized in that hollow shape is the triangle with the cross section similar shape of marking time.
6. according to the described prefabricated mixed steel bar concrete ladder of claim 1, it is characterized in that the ducted body that half space is made of two layers of steel bar concrete and alternate connecting reinforcement concrete rib up and down, in be filled with light material.
7. according to claim 1,2,3,4,5 or 6 described prefabricated mixed steel bar concrete ladders, it is characterized in that vertical pre-buried some tapped steel pipes that are connected with beam steel in stair two curb girders.
CN2010201319897U 2010-03-11 2010-03-11 Prefabricated reinforced concrete stair CN201661021U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102296837A (en) * 2011-07-13 2011-12-28 有利华建筑预制件有限公司 Multistoried building with prefabricated members and semi-prefabricating construction method of multistoried building
CN102767288A (en) * 2012-01-17 2012-11-07 中国建筑第四工程局有限公司 Method and structure for mounting precast reinforced concrete stairs
CN103352550A (en) * 2013-06-29 2013-10-16 内蒙古电力勘测设计院 Deformable connection structure of concrete landing stage steps and building surface
CN104141367A (en) * 2014-07-07 2014-11-12 张跃 Concrete stairs with hoisting seats and connecting pieces
CN106097876A (en) * 2016-08-08 2016-11-09 江苏建筑职业技术学院 Board-like concrete stair structure model and manufacture method
WO2018126950A1 (en) * 2017-01-04 2018-07-12 Yingchuang Building Technique (Shanghai) Co., Ltd Modular stairway
CN108571126A (en) * 2018-05-09 2018-09-25 安徽富煌钢构股份有限公司 A kind of assembled stair
CN109057196A (en) * 2018-09-05 2018-12-21 德睿盛兴(大连)装配式建筑科技有限公司 Green building walk unhurriedly platform bench integration stair and with associated components assembly method
CN109898760A (en) * 2019-03-07 2019-06-18 孟凡林 A kind of assembly concrete stair and its method of construction

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102296837A (en) * 2011-07-13 2011-12-28 有利华建筑预制件有限公司 Multistoried building with prefabricated members and semi-prefabricating construction method of multistoried building
CN102296837B (en) * 2011-07-13 2013-04-10 有利华建筑预制件有限公司 Multistoried building with prefabricated members and semi-prefabricating construction method of multistoried building
CN102767288A (en) * 2012-01-17 2012-11-07 中国建筑第四工程局有限公司 Method and structure for mounting precast reinforced concrete stairs
CN103352550A (en) * 2013-06-29 2013-10-16 内蒙古电力勘测设计院 Deformable connection structure of concrete landing stage steps and building surface
CN103352550B (en) * 2013-06-29 2016-08-17 内蒙古电力勘测设计院有限责任公司 Concrete trestle is marked time the deformable connected structure with flooring
CN104141367A (en) * 2014-07-07 2014-11-12 张跃 Concrete stairs with hoisting seats and connecting pieces
CN106097876A (en) * 2016-08-08 2016-11-09 江苏建筑职业技术学院 Board-like concrete stair structure model and manufacture method
WO2018126950A1 (en) * 2017-01-04 2018-07-12 Yingchuang Building Technique (Shanghai) Co., Ltd Modular stairway
CN108571126A (en) * 2018-05-09 2018-09-25 安徽富煌钢构股份有限公司 A kind of assembled stair
CN109057196A (en) * 2018-09-05 2018-12-21 德睿盛兴(大连)装配式建筑科技有限公司 Green building walk unhurriedly platform bench integration stair and with associated components assembly method
CN109898760A (en) * 2019-03-07 2019-06-18 孟凡林 A kind of assembly concrete stair and its method of construction

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C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 214214 SAITE NEW BUILDING MATERIALS CO., LTD., NO. 16, SAITE AVENUE, GAOCHENG TOWN, YIXING CITY, JIANGSU PROVINCE TO: 214205 NO. 501, LVYUAN ROAD, INSTITUTE OF ENVIRONMENTAL SCIENCE + TECHNOLOGY, YIXING CITY, JIANGSU PROVINCE

ASS Succession or assignment of patent right

Owner name: JIANGSU JINTONG PREFABRICATED CONSTRUCTION DEVELOP

Free format text: FORMER OWNER: ZHANG JIHUA

Effective date: 20110512

Free format text: FORMER OWNER: ZHANG CHEN

TR01 Transfer of patent right

Effective date of registration: 20110512

Address after: Luyuan road 214205 Jiangsu Province Academy of Environmental Sciences Yixing 501

Patentee after: Jiangsu Jintong Prefabricated Construction Development Co., Ltd.

Address before: 214214 Jiangsu city of Yixing province Gaocheng Town West Road No. 16 West Building Materials Co. Ltd.

Co-patentee before: Zhang Chen

Patentee before: Zhang Jihua

EE01 Entry into force of recordation of patent licensing contract

Assignee: Yixing Seth new type building material Co., Ltd.

Assignor: Jiangsu Jintong Prefabricated Construction Development Co., Ltd.

Contract record no.: 2012320000367

Denomination of utility model: Prefabricated reinforced concrete stair

Granted publication date: 20101201

License type: Exclusive License

Record date: 20120401

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101201

Termination date: 20130311