CN212271446U - Ladder board low-level shock insulation structure for assembled stairway - Google Patents
Ladder board low-level shock insulation structure for assembled stairway Download PDFInfo
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- CN212271446U CN212271446U CN202021720364.4U CN202021720364U CN212271446U CN 212271446 U CN212271446 U CN 212271446U CN 202021720364 U CN202021720364 U CN 202021720364U CN 212271446 U CN212271446 U CN 212271446U
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Abstract
The utility model relates to a step low-level shock insulation structure for an assembled stair, which comprises a stair step and a shock insulation support connected with the low-level end of the stair step, wherein the stair step and the shock insulation support are prefabricated into a whole; the shock insulation support comprises a support base body and a flexible deformation body arranged in the support base body; the flexible deformation body comprises shock insulation rubber and a reserved deformation area arranged around the shock insulation rubber; steel plates are respectively arranged on the upper surface and the lower surface of the shock insulation rubber; the lower end of the stair tread is connected with a steel plate on the upper surface of the flexible deformation body; the ladder beam connecting steel bar is also included; one end of the ladder beam connecting steel bar is arranged in the shock insulation support and is connected with the steel plate on the lower surface of the shock insulation rubber through a fastener, and the ladder beam connecting steel bar and the shock insulation support are prefabricated into a whole; the other end of the ladder beam connecting steel bar is arranged outside the shock insulation support. The utility model discloses the nodal connection is simpler, assembly speed is fast, stability is good, and the assembly of the step board low level shock insulation structure of assembled stair is between the ladder roof beam, and the shock insulation performance is high.
Description
Technical Field
The utility model belongs to the technical field of the construction, a shock insulation support is related to, especially, relate to a step low level shock insulation structure for assembled stair.
Background
In the structure of the plate type stair, the stair increases the space rigidity of the whole structure, in the design of the traditional frame structure stair, the stair plates of the plate type stair are generally designed only according to one-way bending components, but the middle plates are used as oblique supporting components to bear axial force and shearing force under the action of earthquake, so that the stress of the joints of the stair plates and the stair beams is large. Generally, a support is required to be arranged between the upper-layer ladder plate and the lower-layer ladder beam for releasing the shearing force and the bending moment, reducing the stress of the ladder plate and playing a role in resisting earthquake. Currently, the current practice is. The mounting mode of the stair earthquake-resistant support is usually an assembly type structure which mainly comprises concrete and a steel structure, the assembly type concrete structure is the key point of the industrial development of buildings, but the technical level of the structure has the defects of limited building types, low assembly rate, complex node connection and poor earthquake-resistant performance; the steel structure is processed in factories, installed on site, has higher industrialization degree and high construction and maintenance cost. Therefore, a new stair seismic isolation method is required.
SUMMERY OF THE UTILITY MODEL
The technical problem to current stair shock insulation support appearance, the utility model provides a step low level shock insulation structure for assembled stair, construction nodal connection is simpler, the assembly rate is fast, has the integral step of step low level shock insulation structure and forms the frame construction that concrete and reinforcing bar combined together with lower part ladder roof beam, and the earthquake resistance intensity of seting up defences can reach 6-8 degrees, and shock insulation performance is high.
In order to realize the purpose, the utility model discloses a technical scheme is:
a step plate low-position shock insulation structure for an assembled stair comprises a stair step plate and a shock insulation support connected with the low-position end of the stair step plate, wherein the stair step plate and the shock insulation support are prefabricated into a whole; the shock insulation support comprises a support base body and a flexible deformation body arranged in the support base body; the flexible deformation body comprises shock insulation rubber and a reserved deformation area arranged around the shock insulation rubber; steel plates are respectively arranged on the upper surface and the lower surface of the shock insulation rubber; the low-position end of the stair tread is connected with a steel plate on the upper surface of the flexible deformation body through a connecting assembly.
Further, the connecting assembly comprises a fastener and a ladder connection steel bar; one end of the stair tread connecting steel bar is arranged in the low end of the stair tread; the other end of the ladder board connecting steel bar is fixed with a steel plate on the upper surface of the shock insulation rubber through a fastener.
Further, the step connecting steel bar comprises a horizontal section and an inclined section; the horizontal section is fixed with the steel plate through a fastener; the inclined section is arranged in the stair tread.
Furthermore, the included angle between the inclined section and the horizontal plane is equal to the inclined angle of the stair tread.
Furthermore, the ladder plate low-position shock insulation structure for the assembled stairway also comprises ladder beam connecting steel bars; one end of the ladder beam connecting steel bar is arranged in the shock insulation support and is connected with the steel plate on the lower surface of the shock insulation rubber through a fastener; the other end of the ladder beam connecting steel bar is arranged outside the shock insulation support; the ladder beam connecting steel bars arranged in the shock insulation support are prefabricated into a whole with the shock insulation support.
Further, the fastener is a bolt or an anchor bar.
Furthermore, the diameter of the fastening piece is more than or equal to 8mm, and the height of the fastening piece is more than or equal to 80 mm.
The utility model has the advantages that:
1. the utility model comprises a stair tread and a shock insulation support connected with the lower end of the stair tread, and the stair tread and the shock insulation support are prefabricated into a whole by concrete; the shock insulation support comprises a support base body and a flexible deformation body arranged in the support base body; the flexible deformation body comprises shock insulation rubber and a reserved deformation area arranged around the shock insulation rubber; steel plates are respectively arranged on the upper surface and the lower surface of the shock insulation rubber; the low-position end of the stair tread is connected with the steel plate on the upper surface of the flexible deformation body through the connecting component. The shock insulation support and the low-position end precast concrete of stair step board become whole, and fixed with low-position stair step roof beam again, in the work progress, the nodal connection is simpler, and the installation assembly is convenient.
2. The utility model discloses, the ladder plate low-level shock insulation structure for the assembled staircase also comprises ladder beam connecting steel bars; one end of the ladder beam connecting steel bar is arranged in the shock insulation support and is connected with the steel plate on the lower surface of the shock insulation rubber through a fastener; the other end of the ladder beam connecting steel bar is arranged outside the shock insulation support; the ladder beam connecting steel bars arranged in the shock insulation support are prefabricated into a whole with the shock insulation support. Adopt ladder roof beam connecting reinforcement to fix the step board low level shock insulation structure of assembled stair with low level stair ladder roof beam, then with concrete placement, form the frame construction that concrete and reinforcing bar combined together, can improve the anti-seismic performance of stair.
3. The utility model discloses, the rubber shear modulus G of shock insulation rubber is 0.4MPa or more and G or less 0.6MPa, the rubber ultimate tensile stress is more than or equal to 1.5MPa, and the ultimate compressive stress is more than or equal to 90 MPa; after the precast concrete shock insulation structure is fixed with the low-position stair beam, when the seismic fortification intensity reaches 6-8 degrees, the precast concrete shock insulation structure can have good shock resistance, and the safety of the stair is ensured.
4. The utility model discloses, flexible deformation body includes shock insulation rubber and establishes the reservation deformation zone around shock insulation rubber, wherein reserves the deformation zone and fills with flexible deformation material, and flexible deformation material's ultimate compressive strength is less than 0.2MPa, and its unipolar limit compressive strain should not be less than 80%, and flexible deformation body is the L physique, guarantees to take place the level dislocation between halfpace and the terraced roof beam and does not receive the building surface course to influence, and stability is better.
Drawings
FIG. 1 is a schematic view of a precast concrete seismic isolation structure according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of the precast concrete seismic-isolated structure of example 1 in stair installation;
FIG. 3 is a schematic front view of the prefabricated concrete seismic isolation structure of example 1 applied to a staircase;
FIG. 4 is a schematic top view of the prefabricated concrete seismic isolation structure of example 1 applied to a staircase;
FIG. 5 is a schematic view of a precast concrete seismic isolation structure according to embodiment 2 of the present invention;
fig. 6 is a schematic view of the precast concrete seismic-isolated structure of example 2 in stair installation;
wherein:
1-a flexible deformable body; 2-shock insulation rubber; 3-a steel plate; 4-a fastener; 5, connecting the reinforcing steel bars with the ladder boards; 6, connecting reinforcing steel bars with the ladder beam; 7, constructing a steel bar; 8, stair treads; 9-high stair beam; 10-low stair beam.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Example 1
The step low level shock insulation structure for assembled stair that this embodiment provided, including stair step 8 and the shock insulation support that links to each other with stair step low level end to prefabricate into whole with stair step 8 and shock insulation support through the concrete.
In the embodiment, the vibration isolation support comprises a support base body and a flexible deformation body 1 arranged in the support base body; the flexible deformation body 1 comprises shock insulation rubber 2 and a reserved deformation area arranged around the shock insulation rubber 2; steel plates 3 are respectively arranged on the upper surface and the lower surface of the shock insulation rubber 2; the low-position end of the stair tread is connected with a steel plate 3 on the upper surface of the flexible deformation body 1 through a connecting component.
In this embodiment, the structure of flexible deformation body 1 is the L physique, wherein reserves the deformation zone and fills with flexible deformation material, guarantees to take place horizontal dislocation and not influenced by building surface course between halfpace and the terraced roof beam, and stability is better. The ultimate compressive strength of the flexible deformation body 1 is less than 0.2MPa, and the uniaxial ultimate compressive strain thereof is 80%.
In this embodiment, the upper and lower surfaces of the vibration isolation rubber 2 are further bonded with seal plates, and then the seal plates are connected with the steel plate 3 through screws. In the embodiment, the rubber shear modulus G of the vibration isolation rubber 2 is 0.4MPa, the ultimate tensile stress of the rubber is 1.5MPa, and the ultimate compressive stress of the rubber is 90 MPa.
In this embodiment, the connecting assembly includes a fastener 4 and a ladder connecting bar 5; one end of the stair board connecting steel bar 5 is arranged in the low end of the stair board; the other end of the ladder board connecting steel bar 5 is fixedly connected with a steel plate 3 on the upper surface of the shock insulation rubber 2 through a fastener 4. The step connecting steel bar 5 comprises a horizontal section and an inclined section; the horizontal section is fixed with the steel plate 3 through a fastener 4; the inclined section is arranged in the stair tread 8. The included angle between the inclined section and the horizontal plane is equal to the inclined angle of the stair tread 8. The number of the fastening pieces 4 is two, the two fastening pieces 4 are longitudinally arranged and are symmetrically distributed along the axial direction of the seismic isolation rubber 2, and the distance between every two adjacent fastening pieces 4 is 150 mm. The fastener 4 is a bolt; the diameter of the fastener 4 is 8mm, and the height of the fastener 4 is 80 mm.
The step plate low-position shock insulation structure for the assembled stair further comprises step beam connecting steel bars 6; one end of a ladder beam connecting steel bar 6 is arranged in the shock insulation support and is connected with a steel plate 3 on the lower surface of the shock insulation rubber 2 through a fastener 4; the other end of the ladder beam connecting steel bar 6 is arranged outside the shock insulation support; the ladder beam connecting steel bar 6 arranged in the shock insulation support is prefabricated with the shock insulation support into a whole. In the present embodiment, the fastener 4 is a bolt; the diameter of the fastener 4 is 8mm, and the height of the fastener 4 is 80 mm; the two fastening pieces 4 are respectively arranged in parallel in the longitudinal direction and are symmetrically distributed along the axial direction of the shock insulation rubber 2, and the distance between the two fastening pieces 4 is 150 mm.
Referring to fig. 2, 3 and 4, the construction method of the step plate low-position seismic isolation structure for the fabricated stairway provided by the embodiment includes the following steps:
(1) manufacturing an assembled ladder board low-level shock insulation structure in a factory, and carrying to a construction site after curing and forming;
specifically, the seismic isolation support and the low-position end of a stair step 8 are fixed through a fastener 4 and a step connecting steel bar 5, and the step connecting steel bar 5 is reinforced through a constructional steel bar 7 during fixing; the seismic isolation support and the ladder beam connecting steel bars 5 are fixed through fasteners 4, then, after concrete is prefabricated and cured, the prefabricated assembly type ladder plate low-position seismic isolation structure is prefabricated, and the area where the concrete is prefabricated is within the range of a solid line frame in the figures 1 and 2;
(2) installing a template for supporting the low-position stair beam 10, and binding reinforcing steel bars at corresponding positions;
(3) mounting the assembled step plate low-position shock insulation structure between a high-position stair beam 9 and a low-position stair beam 10;
specifically, a high-position stair beam 9 is fixed with the high-position end of a stair tread 8; the low-level stair beam 10 is fixed with the shock insulation support through the stair beam connecting steel bar 6; when in connection, the ladder beam connecting steel bars 6 are reinforced through the constructional steel bars 7;
(4) concrete is poured in the templates outside the low-position stair beam 10 and the shock insulation support; the poured area is the dotted line range shown in fig. 2;
(5) and (3) after maintenance and molding, removing the mold, and completing construction, so that the low-position stair beam 10 and the assembled stair board low-position seismic isolation structure are fixed and poured into a frame structure (shown in figures 3 and 4) combined by concrete and steel bars, and the seismic isolation rubber 2 and the reserved deformation area play a role in stabilizing the stair.
In the embodiment, one end of the ladder beam connecting steel bar 6, which is arranged outside the shock insulation support, is arranged in the low-position stair beam 10 and is connected with the low-position stair beam 10; specifically, ladder roof beam connecting reinforcement 6 is L shape, and its horizontal segment is fixed with steel sheet 3 through fastener 4, and the horizontal segment length that stretches out outside ladder roof beam connecting reinforcement 6 of isolation bearing is 300 mm.
In the embodiment, the rubber shear modulus G of the shock insulation rubber 2 is not less than 0.4MPa and not more than 0.6MPa, the ultimate tensile stress of the rubber is not less than 1.5MPa, and the ultimate compressive stress of the rubber is not less than 90 MPa; the reserved deformation area is filled with flexible deformation materials; the ultimate compressive strength of the flexible deformation material is less than 0.2MPa, and the uniaxial ultimate compressive strain of the flexible deformation material is not less than 80%.
Example 2
Referring to fig. 5 and 6, unlike embodiment 1: the fasteners 4 adopt anchor bars, and the distance between every two adjacent fasteners 4 is 200 mm. The diameter of the fastener 4 is 10mm and the height of the fastener 4 is 100 mm. Ladder roof beam connecting reinforcement 6 is L shape, and the lower surface department that the horizontal segment passes through fastener 4 and steel sheet 3 is fixed, and stretches out the outside ladder roof beam connecting reinforcement 6's of shock insulation support horizontal segment length for 600 mm.
In the embodiment, the rubber shear modulus G of the vibration isolation rubber 2 is 0.6MPa, the ultimate tensile stress of the rubber is 2.0MPa, and the ultimate compressive stress is 100 MPa. The ultimate compressive strength of the flexible deformation body 1 was 0.16MPa, and its uniaxial ultimate compressive strain was 85%.
In the embodiment, the shock insulation support and the stair step plate 8 are prefabricated into a whole by the step plate connecting steel bars 5, one end of the step beam and the step beam connecting steel bars 6 is embedded into concrete in the shock insulation support, and the shock insulation support and the stair step plate 8 are prefabricated into a whole; the other end of the ladder beam connecting steel bar 6 is arranged outside the shock insulation support and fixed with the low-position ladder beam 10, and then concrete is poured around the outer peripheries of the low-position shock insulation structure of the assembled ladder plate and the low-position ladder beam 10; the poured area is the dotted line range shown in fig. 6.
The utility model discloses, there is a reserved deformation zone in the low-order isolation structure of assembled stair step board, packs with flexible deformation material, guarantees that can the horizontal dislocation between stair step board 8 and the ladder roof beam and not influenced by the building surface course; the assembled stair step plate low-position shock insulation structure is arranged between a low-position stair step beam 10 and a high-position stair step beam 9 by adopting the step beam connecting steel bars 6, then concrete pouring is carried out, the joint connection is simpler, and the assembling speed is high; meanwhile, the assembled stair tread low-position shock insulation structure and the low-position stair beam form a frame structure combining concrete and reinforcing steel bars, and the shock insulation performance is high.
Claims (7)
1. The utility model provides a step low level shock insulation structure for assembled stair which characterized in that: the stair plate low-position shock insulation structure for the assembled stair comprises a stair plate (8) and a shock insulation support connected with the low-position end of the stair plate, and the stair plate (8) and the shock insulation support are prefabricated into a whole; the shock insulation support comprises a support base body and a flexible deformation body (1) arranged in the support base body; the flexible deformation body (1) comprises shock insulation rubber (2) and a reserved deformation area arranged around the shock insulation rubber (2); steel plates (3) are respectively arranged on the upper surface and the lower surface of the shock insulation rubber (2); the low-position end of the stair tread is connected with a steel plate (3) on the upper surface of the flexible deformation body (1) through a connecting assembly.
2. The step plate low-level seismic isolation structure for fabricated staircases as claimed in claim 1, wherein: the connecting assembly comprises a fastener (4) and a ladder plate connecting steel bar (5); one end of the stair board connecting steel bar (5) is arranged in the lower end of the stair board; the other end of the ladder board connecting steel bar (5) is fixed with a steel plate (3) on the upper surface of the shock insulation rubber (2) through a fastener (4).
3. The step plate low-level seismic isolation structure for fabricated staircases as claimed in claim 2, wherein: the ladder plate connecting steel bar (5) comprises a horizontal section and an inclined section; the horizontal section is fixed with the steel plate (3) through a fastener (4); the inclined section is arranged in the stair tread (8).
4. The step plate low-level seismic isolation structure for fabricated staircases as claimed in claim 3, wherein: the included angle between the inclined section and the horizontal plane is equal to the inclined angle of the stair tread (8).
5. The step plate low-level seismic isolation structure for fabricated staircases as claimed in claim 4, wherein: the ladder plate low-position shock insulation structure for the assembled stair further comprises ladder beam connecting steel bars (6); one end of the ladder beam connecting steel bar (6) is arranged in the shock insulation support and is connected with the steel plate (3) on the lower surface of the shock insulation rubber (2) through a fastener (4); the other end of the ladder beam connecting steel bar (6) is arranged outside the shock insulation support; the ladder beam connecting steel bar (6) arranged in the shock insulation support is prefabricated with the shock insulation support into a whole.
6. The step plate low-level seismic isolation structure for fabricated staircases as claimed in claim 5, wherein: the fastener (4) is a bolt or an anchor bar.
7. The step plate low-level seismic isolation structure for fabricated staircases as claimed in claim 6, wherein: the diameter of the fastening piece (4) is more than or equal to 8mm, and the height of the fastening piece (4) is more than or equal to 80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021720364.4U CN212271446U (en) | 2020-08-17 | 2020-08-17 | Ladder board low-level shock insulation structure for assembled stairway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021720364.4U CN212271446U (en) | 2020-08-17 | 2020-08-17 | Ladder board low-level shock insulation structure for assembled stairway |
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| Publication Number | Publication Date |
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| CN212271446U true CN212271446U (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021720364.4U Active CN212271446U (en) | 2020-08-17 | 2020-08-17 | Ladder board low-level shock insulation structure for assembled stairway |
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- 2020-08-17 CN CN202021720364.4U patent/CN212271446U/en active Active
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