CN211572316U - Flexible connecting piece of assembled stair and assembled stair - Google Patents
Flexible connecting piece of assembled stair and assembled stair Download PDFInfo
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- CN211572316U CN211572316U CN201922211872.3U CN201922211872U CN211572316U CN 211572316 U CN211572316 U CN 211572316U CN 201922211872 U CN201922211872 U CN 201922211872U CN 211572316 U CN211572316 U CN 211572316U
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Abstract
The utility model discloses an assembled stair's flexonics spare and assembled stair belongs to assembled building technical field, has solved among the prior art problem that the unable simultaneous satisfaction of bench board releases the bracing effect in the same direction as the stair direction and resists the earthquake power of perpendicular stair direction and the construction degree of difficulty is big. The flexible connecting piece of the assembly type staircase of the utility model consists of a bolt and an elastic perfusion piece sleeved on the upper part of the bolt; the shape of the elastic pouring piece is a round table shape. The assembled stair comprises a plurality of ladder section plates which are connected up and down, a ladder beam and a bracket are arranged at the joint of two adjacent ladder section plates, the lower end surface of the ladder beam is fixedly connected with the upper end surface of the bracket, and the bracket protrudes out of the side surface of the ladder beam; the two ends of the ladder section plate are respectively lapped on the parts of the corbel which are adjacent to the ladder section plate and protrude out of the ladder beam, and are fixedly connected with the corbel through the flexible connecting piece. The utility model discloses a flexible connectors can be used to the connection of assembled stair.
Description
Technical Field
The utility model relates to an assembly type structure especially relates to a flexonics spare and assembled stair of assembled stair.
Background
The assembled stair is an assembled part formed by vertically connecting a plurality of stair section plates, has the characteristics of high construction speed, convenience in operation, high appearance quality and the like, and can meet the requirements of green buildings on high efficiency, high quality, low cost and low energy consumption.
In the prior art, the connection modes of the commonly used fabricated stairway mainly include fixed connection (the filling hole is filled with common grouting material), movable connection (the filling hole at one end is filled with common grouting material, the filling hole at the other end is a cavity) and flexible connection (the filling hole is filled with elastic grouting material).
For fixed connection, can't produce great deformation basically, in case the bolt of connecting the bench board breaks under the effect of shear force, the bench board can lose the restraint, takes place to fall, has great potential safety hazard. For the movable connection, although the inclined strut action of the staircase along the staircase running direction can be eliminated, under the action of seismic force (inertia force) vertical to the staircase running direction, the bolt in the lower end cavity is easy to shear and damage under the action of earthquake impact force, and the eccentric action of the inertia force of the staircase section plate on the bolt at the upper end can generate larger torsional moment, so that the danger of breakage of the bolt exists, and the safety hazard exists. For flexible connection, the existing pouring holes are all of special-shaped structures (such as dumbbell-shaped structures) and construction difficulty is high.
SUMMERY OF THE UTILITY MODEL
In view of the aforesaid analysis, the utility model aims at providing a flexonics spare and assembled stair of assembled stair have solved among the prior art the unable while of bench board and have satisfied the release and act on and resist the seismic force of perpendicular stair direction and the big problem of the construction degree of difficulty along the bracing of stair direction.
The purpose of the utility model is mainly realized through the following technical scheme:
the utility model provides a flexible connecting piece of an assembly type stair, which consists of a bolt and an elastic perfusion piece sleeved on the upper part of the bolt; the shape of the elastic pouring piece is a round table shape.
In one possible design, the cross-sectional sides of the truncated-cone-shaped elastic infusion piece along the axis are straight.
In one possible design, the side of the cross-section of the truncated-cone-shaped elastic infusion piece along the axis is a concave arc.
The utility model also provides an assembled stair, including a plurality of bench boards that are connected up and down, the junction of two adjacent bench boards is provided with a ladder beam and a bracket, the lower end surface of the ladder beam is fixedly connected with the upper end surface of the bracket, and the bracket protrudes out of the side surface of the ladder beam; two ends of the ladder section plate are respectively lapped on the parts of the adjacent corbels protruding out of the ladder beam and are fixedly connected with the corbels through the flexible connecting pieces; the lower portion of the bolt is located in the corbel and the upper portion of the bolt and the elastomeric potting are located in the bench plate.
In one possible design, the upper end of the bench plate is connected with the bracket above through two flexible connectors, and the lower end of the bench plate is connected with the bracket below through two flexible connectors.
In one possible design, the connection of the center points of the four flexible connectors forms a rectangle.
In one possible design, a leveling layer is arranged between the upper end face of the bracket and the lower end face of the bench plate.
In one possible design, the leveling layer is provided with a smooth insulation layer on the side facing the bench boards.
In one possible design, there is a gap between the ladder section plates and the ladder beam.
In one possible design, the diameter of the bolts at the upper end of the ladder section plate is larger than the diameter of the bolts at the lower end of the ladder section plate.
Compared with the prior art, the utility model discloses beneficial effect as follows:
a) the utility model provides a flexible connection spare of assembled stair is through verifying in practical application, only just can realize the stable connection of elasticity pouring piece and bracket with the bolt, can not take place the condition of both separation, consequently, the flexible connection spare of assembled stair of this embodiment need not additionally to add the nut to can simplify the construction flow, improve the efficiency of construction.
b) The utility model provides a flexible connection spare of assembled stair is arranged in being connected between the bench board of the prefabricated stair in the assembled building and the bracket, and the shape of piece is annotated to elasticity adopts the round platform shape that the lower extreme progressively expands, under great deformation, can make the bolt take place bending deformation, avoids the bolt to cut the destruction. Meanwhile, compared with a special-shaped structure (dumbbell-shaped and the like), the truncated cone-shaped elastic injection piece is simple in structure, so that the construction difficulty can be effectively reduced, and the construction efficiency is improved.
c) The utility model provides a flexible connection spare of assembled stair adopts the traditional ordinary grout material of elasticity notes replacement, and this kind of connected mode is a mechanical model between fixed hinged support and slip hinged support, because the intensity of elasticity notes piece is low for ordinary grout material, has certain toughness and deformability, under the reciprocal squeezing action of bolt, the piece can take place to warp and not lose the bearing capacity to can improve the whole power that can bear of connecting device. Meanwhile, when an earthquake occurs, the anti-seismic stair can effectively release the effect of the inclined strut on the stair section plate under the action of horizontal force, weaken the adverse effect of the stair on the main body structure, effectively resist the seismic force vertical to the stair, and completely meet the defense level of 'small earthquake damage prevention, medium earthquake repairable and large earthquake collapse' in China.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
Fig. 1 is a schematic structural view of a flexible connecting member of an assembled staircase according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of one form of an elastic infusion piece in a flexible connection unit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another form of the elastic infusion piece in the flexible connecting piece according to the first embodiment of the present invention;
fig. 4 is a schematic view illustrating connection between a stair tread and a lower bracket of an assembled stair according to a second embodiment of the present invention;
fig. 5 is a schematic view illustrating a connection between a stair tread and a bracket above the stair tread provided by the second embodiment of the present invention.
Reference numerals:
1-a bolt; 2-elastic pouring; 3-smooth isolation layer; 4-a bench plate; 5-ladder beam; 6-leveling layer; 7-bracket.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention.
Example one
The embodiment provides a flexible connecting piece of an assembly type stair, which is composed of a bolt 1 and an elastic pouring piece 2 sleeved on the upper part of the bolt 1, and the elastic pouring piece 2 is in a circular truncated cone shape, referring to fig. 1 to 3.
When the assembled stair is used, the lower portion of the bolt 1 is inserted into a bracket of the assembled stair, a filling hole matched with the elastic filling piece 2 in shape is formed in a stair section plate of the assembled stair, the upper portion of the bolt 1 is inserted into the filling hole, then the elastic filling material is filled into the filling hole to form the elastic filling piece 2, so that connection between the stair section plate and the bracket is completed, and the assembled stair is formed after the plurality of stair section plates are sequentially connected according to the method.
It should be noted that, in practical application, it is found that stable connection between the elastic pouring piece 2 and the bracket can be realized only by using the bolt, and the two pieces are not separated, so that the flexible connecting piece of the fabricated stair of the embodiment does not need to be additionally provided with a nut, thereby simplifying the construction process and improving the construction efficiency.
Compared with the prior art, the flexible connection piece of assembled stair that this embodiment provided is used for being connected between the bench board of prefabricated stair in the assembled building and the bracket, and the round platform shape that the lower extreme progressively expands is adopted in the shape of elasticity pouring member 2, under great deformation, can impel the bolt to take place bending deformation, avoids the bolt to cut the destruction. Meanwhile, compared with a special-shaped structure (dumbbell-shaped and the like), the truncated cone-shaped elastic injection piece 2 is simple in structure, so that the construction difficulty can be effectively reduced, and the construction efficiency is improved.
In addition, the flexible connecting piece of the fabricated stair adopts the elastic pouring piece 2 to replace the traditional common grouting material, the connection mode is a mechanical model between the fixed hinged support and the sliding hinged support, and the elastic pouring piece 2 has certain toughness and deformability because the strength is lower than that of the common grouting material, and the elastic pouring piece 2 can deform without losing the bearing capacity under the reciprocating extrusion action of the bolt 1, so that the whole bearing capacity of the connecting device can be improved. Meanwhile, when an earthquake occurs, the anti-seismic stair can effectively release the effect of the inclined strut on the stair section plate 4 under the action of horizontal force, weaken the adverse effect of the stair on the main body structure, effectively resist the seismic force perpendicular to the stair running direction, and completely meet the defense level of 'small earthquake damage prevention, medium earthquake repairable and large earthquake fall prevention' in China.
Specifically, the side of the cross section of the truncated cone-shaped elastic infusion part 2 along the axis is a straight line, see fig. 2; alternatively, the side of the cross section of the truncated cone-shaped elastic infusion part 2 along the axis is a concave arc, see fig. 3.
For the material of the elastic pouring member 2, it is cement asphalt mortar (CA mortar) or other pouring material containing polymer component, in order to guarantee that the elastic pouring member 2 has certain mechanical strength and elastic deformation, the strength of the elastic pouring material adopted by the elastic pouring member 2 is controlled between 15MPa and 20 MPa; the bolt has certain toughness and deformability, and is deformed by reciprocating extrusion of the bolt 1 without losing bearing capacity; has certain fluidity, and can meet the requirements of site pouring holes.
Example two
The embodiment provides an assembled stair, which is shown in fig. 4 to 5 and comprises a plurality of ladder section plates 4 which are connected up and down, wherein a ladder beam 5 and a bracket 7 are arranged at the joint of two adjacent ladder section plates 4, the lower end surface of the ladder beam 5 is fixedly connected with the upper end surface of the bracket 7, the bracket 7 protrudes out of the side surface of the ladder beam 5, two ends of each ladder section plate 4 are respectively lapped on the part of the bracket 7 adjacent to the ladder section plate, protruding out of the ladder beam, and are fixedly connected with the bracket 7 through the flexible connecting piece provided by the first embodiment; the lower part of the bolt 1 is located in the corbel 7 and the upper part of the bolt 1 and the elastomeric potting 2 are located in the bench plate 4.
Compared with the prior art, the assembled stair provided by the embodiment has the same beneficial effects as the flexible connecting element provided by the first embodiment, and the description is omitted here.
Particularly, when the number of earthquake levels is small, the elastic pouring piece 2 can deform to adapt to small earthquake displacement along the stair running direction of the stair, so that the diagonal bracing acting force of the stair under the action of an earthquake can be effectively released; along the stair running direction of the vertical stair, the stair section inertia force generated by the out-of-plane earthquake is small, and the plurality of flexible connecting pieces can uniformly bear the earthquake force. When the earthquake progression is great, along the terraced orientation of stair, the elasticity of round platform shape irritates piece 2 on the one hand and can make bolt 1 take place bending deformation more easily, avoids bolt 1 to take place to cut and destroys, and on the other hand the part of elasticity irritates piece 2 is crowded garrulous by bolt 1, consumes energy, can release the ladder section bracing effect under the big shake deformation to a certain extent.
Illustratively, the upper end of the bench board 4 is connected with the bracket 7 above through two flexible connectors, the lower end of the bench board 4 is connected with the bracket 7 below through two flexible connectors, and the connecting lines of the central points of the four flexible connectors form a rectangle. Four flexible connectors evenly distributed, when receiving the earthquake power, four flexible connectors can take place deformation simultaneously, release the produced deformation of earthquake power to improve the shock resistance of above-mentioned assembled stair.
Under the general condition, the planarization of the up end of bracket 7 is relatively poor, with bench board 4 direct overlap joint on bracket 7, can influence bench board 4's stability, consequently, be equipped with screed-coat 6 between the up end of bracket 7 and the lower terminal surface of bench board 4, the lower terminal surface of screed-coat 6 and the up end contact of bracket 7, the up end of screed-coat 6 and the lower terminal surface contact of bench board 4, exemplarily, this screed-coat 6 is 18 ~ 22 mm's cement mortar layer. Because the roughness of screed-coat 6 is higher than the roughness of bracket 7, bench board 4 passes through 6 overlap joints of screed-coat on bracket 7, can guarantee bench board 4's stability, thereby prevents that the unevenness is pour to bracket 7 and influence the accuracy of bench board 4 and take one's place.
It is worth noting that the bonding effect takes place between screed-coat 6 can and elasticity pouring piece 2 and the bench board 4, influences the swing joint between bench board 4 and the bracket 7, consequently, can set up smooth isolation layer 3 in screed-coat 6 towards bench board 4 one side, can effectively reduce the adhesion force between elasticity pouring piece 2 and the bench board 4 through smooth isolation layer 3, reduces the adhesion force to the swing joint's between bench board 4 and the bracket 7 influence.
In order to avoid collision between the ladder section plates 4 and the ladder beams 5 when vibration occurs, gaps are formed between the ladder section plates 4 and the ladder beams 5, the gaps can be 30-50 mm, and the higher the intensity is, the higher the layer height is, the larger the value is. The numerical value can be selected according to displacement calculation, the principle that no collision occurs under the action of a large shock is taken as the principle, the gap is filled with the buffer material (for example, foamed polyurethane), a certain height difference exists between the top surface of the buffer material and the upper end surface of the ladder beam 5, the height difference is 18-22 mm, the height difference can be processed by adopting end face construction, smooth transition is realized, and the attractiveness of the construction surface can be guaranteed.
In order to ensure the relative integrity of the main structure of the whole staircase in a strong earthquake, the diameter of the bolt 1 at the lower end of the stair section plate 4 is larger than that of the bolt 1 at the lower end of the stair section plate 4, for example, the bolt 1 at the lower end of the stair section plate 4 is M18, and the bolt 1 at the lower end of the stair section plate 4 is M16. Under the condition that the bolts 1 must be damaged, the bolts 1 at the lower end of the stair section plate 4 are damaged before the bolts 1 at the upper end of the stair, and the damaged bolts 1 can offset part of seismic force and the diagonal bracing effect of the stair on the building main body structure; at this moment, the bolt 1 positioned at the upper end of the stair section plate 4 still can play a role in connection and fixation, and the integrity of the whole stair and the main structure is ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. The flexible connecting piece of the assembled stair is characterized in that the flexible connecting piece consists of a bolt and an elastic pouring piece sleeved on the upper part of the bolt;
the shape of the elastic pouring piece is a circular truncated cone.
2. The flexible connection unit of fabricated staircases as claimed in claim 1, wherein said truncated cone shaped resilient infusion is rectilinear in cross section along the axis.
3. The flexible attachment of assembled staircases according to claim 1, wherein said frusto-conical elastomeric pourer has concave curvature along the lateral sides of its cross-section along the axis.
4. The assembled stair is characterized by comprising a plurality of ladder section plates which are connected up and down, wherein a ladder beam and a bracket are arranged at the joint of two adjacent ladder section plates, the lower end surface of the ladder beam is fixedly connected with the upper end surface of the bracket, and the bracket protrudes out of the side surface of the ladder beam;
the two ends of the ladder section plates are respectively lapped on the parts of the corbels adjacent to the ladder section plates, which protrude out of the ladder beams, and are fixedly connected with the corbels through the flexible connecting piece according to any one of claims 1 to 3;
the lower portion of the bolt is located in the bracket, and the upper portion of the bolt and the elastic injection piece are located in the bench plate.
5. The fabricated staircase of claim 4, wherein the upper ends of the flight panels are connected to the upper corbel by two flexible connectors and the lower ends of the flight panels are connected to the lower corbel by two flexible connectors.
6. Fabricated staircase as claimed in claim 5, characterized in that the connecting lines of the centre points of the four flexible connecting elements form a rectangle.
7. The fabricated staircase of claim 4, wherein a leveling layer is provided between the upper end surface of the corbel and the lower end surface of the flight.
8. The fabricated staircase of claim 7, wherein the leveling layer is provided with a smooth barrier layer on the side facing the flight deck.
9. The fabricated staircase of claim 4, wherein there is a gap between the flight panels and the stiles.
10. Assembled stairway according to any one of claims 4 to 9, wherein the diameter of the bolts at the upper end of the ladder section plates is larger than the diameter of the bolts at the lower end of the ladder section plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922211872.3U CN211572316U (en) | 2019-12-11 | 2019-12-11 | Flexible connecting piece of assembled stair and assembled stair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922211872.3U CN211572316U (en) | 2019-12-11 | 2019-12-11 | Flexible connecting piece of assembled stair and assembled stair |
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| Publication Number | Publication Date |
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| CN211572316U true CN211572316U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922211872.3U Active CN211572316U (en) | 2019-12-11 | 2019-12-11 | Flexible connecting piece of assembled stair and assembled stair |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478656A (en) * | 2022-09-15 | 2022-12-16 | 中国建筑设计研究院有限公司 | Assembled type laminated concrete slab type stair and production method |
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- 2019-12-11 CN CN201922211872.3U patent/CN211572316U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478656A (en) * | 2022-09-15 | 2022-12-16 | 中国建筑设计研究院有限公司 | Assembled type laminated concrete slab type stair and production method |
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