CN104790575A - Prestressed floor slab - Google Patents
Prestressed floor slab Download PDFInfo
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- CN104790575A CN104790575A CN201510190158.4A CN201510190158A CN104790575A CN 104790575 A CN104790575 A CN 104790575A CN 201510190158 A CN201510190158 A CN 201510190158A CN 104790575 A CN104790575 A CN 104790575A
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- prestressing
- prestressing force
- force
- puller
- seat
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Abstract
The invention relates to a prestressed floor slab. The prestressed floor slab is characterized in that the interior or the bottom of the prestressed floor slab is provided with prestressed devices, each prestressed device comprises a prestressed fixing seat, a prestressed pulling seat and a prestressed puller, and each prestressed fixing seat is connected with the corresponding prestressed pulling seat through the corresponding prestressed puller in an inclined mode. According to the prestressed floor slab, a prestressed structure of an existing floor slab is broken through, and the prestressed floor slab has the advantages of being convenient to regulate, flexible in installation, saving in materials and capable of significantly improving the stress performance of the floor slab.
Description
Technical field
The present invention relates to building field, be specifically related to a kind of pre-stress floor.
Background technology
In the building such as Business Building, house, floor is main components wherein and main stressed member.In order to improve the stress performance of floor, saving material, reducing distortion, having minority layer of concrete to have employed the prestressed structure of inner embedded bar.But this prestressed structure exists following shortcoming: (1) structure is too simple, the compressive property of floor improves few, and its combination property is fully excavated.(2) embedded bar pretension floor make before mix up, cannot regulate according to actual loading situation after floor coagulation forming, compliance and adjusting function poor.(3) origin of force at embedded bar two ends is inner at floor, and it is stressed unreasonable, is unfavorable for giving full play to prestressed stressed advantage.Especially for the combined type floor of concrete and steel work, how arranging efficient prestressing apparatus, is a urgent need to solve the problem.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of novel structure, easy to adjust, flexible for installation, save material, the novel pre-stressed floor of the comprehensive stress performance of floor can be significantly improved.
The present invention is achieved by the following technical programs:
A kind of pre-stress floor, is characterized in that, described pre-stress floor inside or bottom are provided with prestressing apparatus.
Further, described pre-stress floor comprises the girder steel frame of layer of concrete and bottom, and described prestressing apparatus is arranged on girder steel frame.
Further, described prestressing apparatus comprises prestressing force holder, prestressing force pulling force seat and prestressing force puller, and described prestressing force puller is one or more in multiply steel cable, round steel, steel plate, shaped steel, carbon fiber or other retention material.
Further, described prestressing apparatus is arranged on two ends or the middle part of pre-stress floor, and the origin of force of prestressing apparatus is 2 or 4.
Preferably, described prestressing apparatus is separately positioned in layer of concrete and girder steel frame, the prestressing force pulling force seat of described prestressing apparatus is by advance in layer of concrete, and by precast reinforcedly to link together in the mode of welding and layer of concrete, the below correspondence of described prestressing force pulling force seat is provided with prestressing force holder, described prestressing force holder is fixed on the girder steel frame below layer of concrete, described prestressing force pulling force seat is connected by prestressing force puller with between prestressing force holder, prestressing force puller is oblique installation, prestressing force puller is drawn into pre-tensile stress state.
Preferably, described prestressing apparatus is arranged on girder steel frame two ends, the prestressing force pulling force seat of described prestressing apparatus is arranged on the top of girder steel frame, the prestressing force holder of described prestressing apparatus is arranged on the bottom of girder steel frame, described prestressing force pulling force seat is connected by prestressing force puller with between prestressing force holder, described prestressing force puller is oblique installation, and described prestressing force puller is drawn into pre-tensile stress state.
Preferably, described prestressing force puller adopts screw thread round steel, and its two ends are fastened on prestressing force pulling force seat and prestressing force holder by nut respectively, and described nut and screw thread round steel are spiral connection, by the pre-tensile stress of rotating nut adjustable prestressing force puller.
Technique effect of the present invention is as follows:
The present invention breaches the prestressed structure of existing floor, employing is arranged on floor outside, band prestressing force holder and pulling force seat, origin of force is arranged on two ends or middle part, in oblique installation, nut screws adjustable new construction, change existing floor prestressed structure too simple, cannot regulate according to actual loading situation, the irrational problem of origin of force, especially the difficult problem that concrete and steel work combined type floor arrange prestressing apparatus is solved, it is a quantum jump innovation of building field, significantly improve the comprehensive stress performance of floor, and can regulate according to actual loading situation, compliance and modulability good, origin of force arranges rationally, prestressed stressed advantage can be given full play to, significantly decrease steel and concrete consumption.
Accompanying drawing explanation
Fig. 1 is the front view of the embodiment of the present invention 1.
Fig. 2 is the top view after the embodiment of the present invention 1 removes layer of concrete.
Fig. 3 is A-A sectional view in Fig. 1.
Fig. 4 is the structural representation of the embodiment of the present invention 2.
In accompanying drawing: 1-layer of concrete, 2-girder steel frame, 3-prestressing apparatus, 31-prestressing force pulling force seat, 32-prestressing force puller, 33-prestressing force holder, 34-nut, 35-strengthen gusset.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
embodiment 1
As shown in Figure 1 and Figure 2, a kind of pre-stress floor, the girder steel frame 2 comprising layer of concrete 1 and be positioned at bottom it, described girder steel frame 2 is provided with prestressing apparatus 3.
Prestressing apparatus 3 comprises prestressing force holder 33, prestressing force pulling force seat 31 and prestressing force puller 32, and described prestressing force puller 32 is one or more in multiply steel cable, round steel, steel plate, shaped steel, carbon fiber or other retention material.
Prestressing force pulling force seat 31 and prestressing force holder 33 can adopt steel socket or high-strength alloy base or highstrenghtpiston's base or elastic base or other base, and in the present embodiment, prestressing force pulling force seat 31 and prestressing force holder 33 all select steel socket.
As shown in Figure 1, Figure 2, Figure 3 shows, prestressing force pulling force seat 31, or to be linked together by precast reinforced in the mode of welding and layer of concrete 1 by pre-in layer of concrete 1.In the present embodiment, prestressing force pulling force seat 31 has 2 right, is separately positioned on the two ends of layer of concrete 1.Near 2 pairs of prestressing force pulling force seats 31, correspondence is provided with 2 pairs of prestressing force holders, 33,2 pairs of prestressing force holders 33 and is fixed on the girder steel frame 2 below layer of concrete 1 by welding, riveted joint, bolt connection or alternate manner.Often pair of prestressing force pulling force seat 31 is connected by prestressing force puller 32 with between prestressing force holder 33, and prestressing force puller 32 is in oblique installation, and prestressing force puller 32 is drawn into pre-tensile stress state.
In the present embodiment, prestressing force puller 32 selects screw thread round steel, its two ends are fastened on prestressing force pulling force seat 31 with on prestressing force holder 33 respectively by nut 34, and described nut 34 and screw thread round steel are spiral connection, by the pre-tensile stress of rotating nut 34 adjustable prestressing force puller 32.Compared with other prestressing force puller 32, adopt screw thread round steel, there is the advantages such as cost is low, selection is fast, controllability is good.
Prestressing apparatus 3 can be arranged on two ends or the middle part of pre-stress floor, generally using the fixed end of prestressing force holder 33 as prestressing force puller 32, using the free end of prestressing force pulling force seat 31 as prestressing force puller 32.Under pre-tension state, the origin of force of pre-tensile stress is positioned at two ends or the middle part of pre-stress floor, and described origin of force is 2 or 4.Certainly, when applying, also can according to actual conditions other position being arranged on pre-stress floor by prestressing apparatus 3.The origin of force of prestressing apparatus 3 arranges two ends or the middle part of pre-stress floor, and mounted in pairs, it is stressed more rationally, with material more economize, effect is more excellent.
The invention solves the prestressing force offering question of layer of concrete and steel work combined type floor, prestressing force pulling force seat 31 is by prefabricated and be welded in layer of concrete 1, prestressing force holder 33 is fixed on the girder steel frame 2 below layer of concrete 1, be connected by prestressing force puller 32 is oblique again, on the girder steel frame 2 pre-tensile stress being acted on layer of concrete 1 and be closely connected with layer of concrete 1, combined type floor is made to produce corresponding elastic deformation to strengthen its comprehensive stress performance, the present invention has easy to adjust, flexible for installation, save material, the advantage of the comprehensive stress performance of floor can be significantly improved.
embodiment 2
In the present embodiment, except prestressing apparatus difference, other structure of pre-stress floor is all identical with embodiment 1.
Prestressing apparatus 3 comprises prestressing force holder 33, prestressing force pulling force seat 31 and prestressing force puller 32, and described prestressing force pulling force seat 31 and prestressing force holder 33 all select steel socket.
As shown in Figure 4, prestressing apparatus is arranged on girder steel frame 2 two ends.Prestressing force pulling force seat 31 is fixed on the top of girder steel frame by welding, riveted joint, bolt connection or alternate manner, and is provided with reinforcement gusset 35 in prestressing force pulling force seat 31 installation place, to improve its intensity further.The prestressing force holder 33 of described prestressing apparatus is fixed on the bottom of girder steel frame 2 by welding, riveted joint, bolt connection or alternate manner.Prestressing force pulling force seat 31 is connected by prestressing force puller 32 with between prestressing force holder 33, and described prestressing force puller 32 is in oblique installation, and described prestressing force puller 32 is drawn into pre-tensile stress state.
In the present embodiment, prestressing apparatus is arranged in pairs in girder steel frame 2 two ends, directly be not connected with the layer of concrete 1 on girder steel frame 2 top, but pre-tensile stress is acted on girder steel frame 2, girder steel frame 2 is made to produce corresponding elastic deformation to strengthen its resistance to compression and bending resistance combination property, and then improve the comprehensive stress performance of the whole pre-stress floor that girder steel frame 2 and layer of concrete 1 are connected as a single entity, significantly decrease steel and concrete consumption.
Above embodiment is explanation of the invention, and non-limiting, is more than PART.Prestressing apparatus of the present invention not only can be applicable to floor, also can be applicable in other building structure.It should be noted that; concerning the technician of the industry; the simple transformation of carrying out according to general principle of the present invention and structure, combination and improvement; as changed prestressing apparatus 3 for horizontal stretch; or change the materials and structures of each parts of prestressing apparatus 3; or change not mounted in pairs into, or prestressing force pulling force seat 31 and prestressing force holder 33 are exchanged installation etc., these all should be included within protection scope of the present invention.
Claims (7)
1. a pre-stress floor, is characterized in that: described pre-stress floor inside or bottom are provided with prestressing apparatus.
2. a kind of pre-stress floor according to claim 1, is characterized in that: described pre-stress floor comprises the girder steel frame of layer of concrete and bottom, and described prestressing apparatus is arranged on girder steel frame.
3. a kind of pre-stress floor according to claim 1 and 2, it is characterized in that: described prestressing apparatus comprises prestressing force holder, prestressing force pulling force seat and prestressing force puller, described prestressing force puller is one or more in multiply steel cable, round steel, steel plate, shaped steel, carbon fiber or other retention material.
4. a kind of pre-stress floor according to claim 3, is characterized in that: described prestressing apparatus is arranged on two ends or the middle part of pre-stress floor, and the origin of force of prestressing apparatus is 2 or 4.
5. a kind of pre-stress floor according to any one of claim 4, it is characterized in that: described prestressing apparatus is separately positioned in layer of concrete and girder steel frame, the prestressing force pulling force seat of described prestressing apparatus is by advance in layer of concrete, and by precast reinforcedly to link together in the mode of welding and layer of concrete, the below correspondence of described prestressing force pulling force seat is provided with prestressing force holder, described prestressing force holder is fixed on the girder steel frame below layer of concrete, described prestressing force pulling force seat is connected by prestressing force puller with between prestressing force holder, prestressing force puller is oblique installation, prestressing force puller is drawn into pre-tensile stress state.
6. a kind of pre-stress floor according to any one of claim 4, it is characterized in that: described prestressing apparatus is arranged on girder steel frame two ends, the prestressing force pulling force seat of described prestressing apparatus is arranged on the top of girder steel frame, the prestressing force holder of described prestressing apparatus is arranged on the bottom of girder steel frame, described prestressing force pulling force seat is connected by prestressing force puller with between prestressing force holder, described prestressing force puller is oblique installation, and described prestressing force puller is drawn into pre-tensile stress state.
7. a kind of pre-stress floor according to any one of claim 3,5,6, it is characterized in that: described prestressing force puller adopts screw thread round steel, its two ends are fastened on prestressing force pulling force seat and prestressing force holder by nut respectively, described nut and screw thread round steel are spiral connection, by the pre-tensile stress of rotating nut adjustable prestressing force puller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190158.4A CN104790575A (en) | 2015-04-21 | 2015-04-21 | Prestressed floor slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510190158.4A CN104790575A (en) | 2015-04-21 | 2015-04-21 | Prestressed floor slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104790575A true CN104790575A (en) | 2015-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510190158.4A Pending CN104790575A (en) | 2015-04-21 | 2015-04-21 | Prestressed floor slab |
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| CN (1) | CN104790575A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437192A (en) * | 2016-10-21 | 2017-02-22 | 江苏东南特种技术工程有限公司 | Method for carrying out reinforcing through prestress pulling cables on board |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1037362A (en) * | 1996-07-26 | 1998-02-10 | Kenchikukou Kouhou Kenkyusho:Kk | Construction method for reinforced concrete floor |
| CN201133086Y (en) * | 2007-12-06 | 2008-10-15 | 中国京冶工程技术有限公司 | Prestressing force beam string stretching device |
| CN101418605A (en) * | 2006-12-08 | 2009-04-29 | 邱则有 | Laminated slabs |
| CN102418381A (en) * | 2010-09-28 | 2012-04-18 | 杨峰 | Building structure system combined with steel beam and pre-tensioned prestressing superposed beam and construction method for building structure system |
-
2015
- 2015-04-21 CN CN201510190158.4A patent/CN104790575A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1037362A (en) * | 1996-07-26 | 1998-02-10 | Kenchikukou Kouhou Kenkyusho:Kk | Construction method for reinforced concrete floor |
| CN101418605A (en) * | 2006-12-08 | 2009-04-29 | 邱则有 | Laminated slabs |
| CN201133086Y (en) * | 2007-12-06 | 2008-10-15 | 中国京冶工程技术有限公司 | Prestressing force beam string stretching device |
| CN102418381A (en) * | 2010-09-28 | 2012-04-18 | 杨峰 | Building structure system combined with steel beam and pre-tensioned prestressing superposed beam and construction method for building structure system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437192A (en) * | 2016-10-21 | 2017-02-22 | 江苏东南特种技术工程有限公司 | Method for carrying out reinforcing through prestress pulling cables on board |
| CN106437192B (en) * | 2016-10-21 | 2018-10-16 | 江苏东南特种技术工程有限公司 | A method of it is reinforced using prestressed cable in plate face |
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Application publication date: 20150722 |
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