CN202658817U - Sliding device at lower end of reinforced concrete stair - Google Patents
Sliding device at lower end of reinforced concrete stair Download PDFInfo
- Publication number
- CN202658817U CN202658817U CN 201220143854 CN201220143854U CN202658817U CN 202658817 U CN202658817 U CN 202658817U CN 201220143854 CN201220143854 CN 201220143854 CN 201220143854 U CN201220143854 U CN 201220143854U CN 202658817 U CN202658817 U CN 202658817U
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- stair
- reinforced concrete
- supporting component
- stair tread
- plastic film
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Abstract
The utility model relates to a sliding device at the lower end of a reinforced concrete stair, and belongs to the field of civil engineering structures. The sliding device at the lower end of the reinforced concrete stair is mainly used for construction engineering and comprises a stair lower end, a supporting component used to support the stair lower end and a plastic film isolation layer, wherein the upper surface of the supporting component is manufactured into a flat and smooth plane in a pouring mode and is provided with the plastic film isolation layer in a paving mode, the stair lower end is located at the upper surface of the plastic film isolation layer and is completely separated from the supporting component by the plastic film isolation layer to form the device which is capable of relatively and horizontally sliding between the stair lower end and the supporting component, and the supporting component used to support the stair lower end adopts a ladder beam or a ladder beam bridging piece extending from the ladder beam. The sliding device at the lower end of the reinforced concrete stair provides a simple and economic technical method to relieve earthquake damage to stairs and the whole structure of a building, thereby being capable of being popularized and applied to a structural system in an earthquake region with multiple high-rise buildings, especially concrete structures.
Description
Technical field
The utility model is the slidably device of a kind of reinforced concrete stairs plate lower end, belongs to the civil engineering structure field, is mainly used in construction work.
Background technology
Cast-in-situ steel reinforced concrete stair in the building are by the conventional construction mode, are that the supporting member with agent structure floor or half space place is cast in.This not only makes stair tread participate in lateral resisting work as inclined member, agent structure is produced a very large impact, and often make stair become the first anti-vibration defense lines, destroys under macroseism in advance, is difficult to guarantee the function of its performance evacuating personnel and rescue.Therefore, for stair self and even integrally-built quake-resistant safety, should adopt an effective measure, reduce staircase component to the impact of agent structure rigidity, avoid it early to destroy.
Be head it off, the new edition seismic design provision in building code of China is advocated " the gangboard sliding bearing is in landing slab ".But the concrete structure way that existing document atlas proposes in this respect exists obviously not enough, and such as complex structure, cost is higher, construction is inconvenient etc., thereby adopts so far few in Practical Project.
The utility model content
The purpose of this utility model is for above-mentioned actual needs, the slidably device of a kind of reinforced concrete stairs plate lower end is proposed, by changing the connected mode of stair and agent structure, change the stress condition of stair self, postpone and destroying, make its function of when earthquake, bringing into play rescue, evacuating, and reduce the adverse effect to structure.
The utility model adopts following technical scheme:
The slidably device of a kind of reinforced concrete stairs plate lower end comprises the stair tread lower end, supports supporting member and the plastic sheeting separation layer of stair tread lower end; The upper surface of supporting member is built and is made as smooth smooth horizontal plane, and completely is covered with the plastic sheeting separation layer; The stair tread lower end is positioned at the upper surface of described plastic sheeting separation layer, and is separated fully by the plastic sheeting separation layer between the supporting member, consists of stair tread lower end and supporting member the device that relative level slides can occur.
The terraced beam bridging piece that the supporting member of described supporting stair tread lower end adopts terraced beam or extended out by terraced beam.
Operating principle of the present utility model is: because the stair tread lower end has changed and the whole way of watering of supporting member, and separate with the plastic sheeting separation layer, cause structure when relative storey displacement occurs, but both relative slidings, can avoid thus stair because of as bearing diagonal stressed occur self destroy in advance and on the impact of agent structure rigidity.
Because the plastic sheeting price is low, adopt the utility model to compare with the common cast-in-situ steel reinforced concrete stair of building fricton-tight setting, expense differs seldom, and constructability.
In sum, to such an extent as to the utility model for the stair overall structure in the building, provides a kind of technical measures that improve anti-seismic performance, alleviate earthquake, be simple and easy to usefulness, constructability, cheap, all kinds of multi-rise building structural systems to the earthquake zone have good popularizing application prospect.
Description of drawings
Fig. 1 is the vertical section schematic diagram of the utility model when being used for reinforced concrete frame structure and stair tread lower end supporting member and being terraced beam;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the vertical section schematic diagram of the utility model when being used for reinforced concrete frame structure and stair tread lower end supporting member and being terraced beam bridging piece;
Fig. 4 is the B-B sectional drawing of Fig. 3;
Among the figure: 1, terraced beam, 2, terraced beam bridging piece, 3, landing slab, 4, the stair tread lower end, 5, the plastic sheeting separation layer.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further:
Embodiment 1:
Fig. 1～Fig. 3 is the application of slidably device when the stair tread lower end is supported on terraced beam of reinforced concrete stairs plate lower end.During construction, behind casting platform plate 3, terraced beam 1, the concrete of terraced beam 1 upper surface is smeared into smooth smooth horizontal plane, and at its full paving plastic film separation layer 5 of four corner corresponding to supporting stair tread lower end 4, then build at plastic sheeting separation layer 5 and make stair tread lower end 4, stair tread lower end 4 and the upper surface of terraced beam 1 are separated by plastic sheeting separation layer 5 fully, relative sliding can occur; Thereby consist of the slidably device of reinforced concrete stairs plate lower end.
Embodiment 2:
Fig. 4 is the application of slidably device when the stair tread lower end is supported on terraced beam bridging piece of reinforced concrete stairs plate lower end.During construction, behind casting platform plate 3, terraced beam 1 and terraced beam bridging piece 2, the upper surface concrete of terraced beam bridging piece 2 is smeared into smooth smooth horizontal plane, and at its full paving plastic film separation layer 5 of four corner corresponding to supporting stair tread lower end 4, then build at plastic sheeting separation layer 5 and make stair tread lower end 4, stair tread lower end 4 and the upper surface of terraced beam bridging piece 2 are separated by plastic sheeting separation layer 5 fully, relative sliding can occur; Thereby consist of the slidably device of reinforced concrete stairs plate lower end.
Claims (2)
1. the slidably device of a reinforced concrete stairs plate lower end is characterized in that: the supporting member and the plastic sheeting separation layer (5) that comprise stair tread lower end (4), supporting stair tread lower end (4); The upper surface of supporting member is built and is made as smooth smooth horizontal plane, and completely is covered with plastic sheeting separation layer (5); Stair tread lower end (4) is positioned at the upper surface of described plastic sheeting separation layer (5), and separated fully by plastic sheeting separation layer (5) between the supporting member, consist of stair tread lower end (4) and with supporting member the device that relative level slides can occur.
2. the slidably device of a kind of reinforced concrete stairs plate according to claim 1 lower end is characterized in that: the terraced beam bridging piece (2) that the supporting member of described supporting stair tread lower end (4) adopts terraced beam (1) or extended out by terraced beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220143854 CN202658817U (en) | 2012-04-06 | 2012-04-06 | Sliding device at lower end of reinforced concrete stair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220143854 CN202658817U (en) | 2012-04-06 | 2012-04-06 | Sliding device at lower end of reinforced concrete stair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202658817U true CN202658817U (en) | 2013-01-09 |
Family
ID=47453731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220143854 Expired - Fee Related CN202658817U (en) | 2012-04-06 | 2012-04-06 | Sliding device at lower end of reinforced concrete stair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202658817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711266A (en) * | 2013-12-29 | 2014-04-09 | 北京工业大学 | Energy dissipation and seismic mitigation structure of stair connecting node and implementation process |
-
2012
- 2012-04-06 CN CN 201220143854 patent/CN202658817U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711266A (en) * | 2013-12-29 | 2014-04-09 | 北京工业大学 | Energy dissipation and seismic mitigation structure of stair connecting node and implementation process |
| CN103711266B (en) * | 2013-12-29 | 2016-08-17 | 北京工业大学 | A kind of stair connection joint seismic energy dissipation structure and implementation process |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130406 |