CN215858696U

CN215858696U - Building stair structure with up-down sliding support

Info

Publication number: CN215858696U
Application number: CN202121167168.3U
Authority: CN
Inventors: 耿柳玽; 许晓梁; 洪文明
Original assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Current assignee: Architecture Design and Research Institute of Tongji University Group Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-02-18
Anticipated expiration: 2031-05-28

Abstract

The utility model relates to a building stair structure with an up-and-down sliding support, which comprises an upper structural beam, a stair and a lower structural beam which are sequentially connected, wherein an upper extension section is horizontally arranged at the upper end of the stair, a mounting groove with an opening facing the upper extension section is horizontally arranged on the upper structural beam, the length of the upper extension section is smaller than the depth of the mounting groove, the upper extension section is inserted into the mounting groove, a limiting column is arranged between the mounting groove and the upper extension section, a platform surface and a cantilever beam are arranged on the lower structural beam, the height of the platform surface is larger than that of the cantilever beam, the lower end of the stair is horizontally provided with a lower extension section, the upper end surface of the cantilever beam is contacted with the lower end surface of the lower extension section through a first polytetrafluoroethylene plate, and an expansion joint is arranged between the lower extension section and the platform surface. Compared with the prior art, the stair has the advantages that the sliding amplitude between the upper end and the lower end of the stair respectively has a complementary effect with that between the upper structural beam and the lower structural beam, the stair is prevented from slipping off the lower structural beam, and the safety is good.

Description

Building stair structure with up-down sliding support

Technical Field

The utility model relates to the technical field of buildings, in particular to a building stair structure with an upper sliding support and a lower sliding support.

Background

In a building, vertical and horizontal supports of a staircase are relatively few, the bearing rigidity is high, when an earthquake disaster occurs, the structure of the staircase is usually unstable firstly until the structure is damaged, and when the earthquake occurs, escape is required to be carried out through the staircase, so that the structural safety of the staircase is very important.

In order to slow down or alleviate the earthquake load that stair structure bore, generally adopt to set up sliding support at the junction of stair flight and half space to can stretch out and draw back the slip relatively in certain interval between stair flight and the half space when the earthquake takes place, reduce the influence of earthquake destruction load.

The prior building stairs with sliding supports are all designed by adopting a horizontal outrigger, Chinese patent No. CN201920793480.X proposes a scissor type building stair device with an upper sliding support and a lower sliding support, the disclosed concrete structural outrigger is designed in a structure that extends horizontally from the structural beam to a stair step section, because the upper surface of the concrete structural outrigger is a horizontal plane, the lower end surface of the stair step section is a horizontal plane, a sliding support base plate steel plate is arranged on the upper surface of the structural beam extending out of the concrete structural outrigger part, the upper end of the prior stair structure is fixedly connected with the structural beam, and the sliding support is designed only at the lower end of the stair, when the whole shaking amplitude of the building is large in earthquake, the building body can generate horizontal tension to the stair, because the shaking amplitude is increased along with the increase of the height of the building, especially for high-rise and super high-rise buildings, the shaking amplitude of the building body is large in earthquake, therefore, the lower end of the stair is easily separated from the concrete structure cantilever slab, and the use safety of the stair is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The present invention aims to overcome the defects of the prior art and provide a building stair with an upper sliding support and a lower sliding support, wherein the upper end and the lower end of the stair respectively have complementary effects with the sliding amplitude between an upper structural beam and a lower structural beam, the occurrence of the stair slipping from the lower structural beam is reduced, and the building stair has good safety.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a building stair structure with upper and lower sliding support, is including the last structure roof beam, stair and the lower structure roof beam that connect gradually, the upper end level of stair be equipped with the extension, last structure roof beam upper level be equipped with the mounting groove of the extension of opening orientation, the length of last extension be less than the degree of depth of mounting groove, last extension insert in the mounting groove, mounting groove and last extension between be equipped with spacing post, the lower structure roof beam on be equipped with platform face and outrigger, platform face highly be greater than the height of outrigger, the lower extreme level of stair be equipped with down the extension, the outrigger up end through the lower terminal surface contact of first polytetrafluoroethylene board and lower extension, the lower extension and the platform face between be equipped with the expansion joint.

Further, the outrigger up end be equipped with arc convex surface and symmetry and set up the lower horizontal overlap joint face in arc convex surface both sides, the lower terminal surface of lower extension section on correspond and be equipped with the arc concave surface and the symmetry sets up the upper level overlap joint face in arc concave surface both sides, arc convex surface and arc concave surface contact, upper level overlap joint face and lower horizontal overlap joint face contact.

Furthermore, the width of the lower horizontal lapping surface of the arc-shaped convex surface close to one side of the end part of the cantilever beam is larger than the width of the upper horizontal lapping surface of the arc-shaped concave surface close to one side of the end part of the upper extension section.

Furthermore, a foam rod, silicone weather-resistant glue and a seam beautifying agent are sequentially arranged in the expansion joint from bottom to top.

Furthermore, the mounting groove inside wall be equipped with the second poly tetrafluoroethylene board, spacing post both ends pass behind the second poly tetrafluoroethylene board and be connected with last structural beam.

Furthermore, the lower structure beam is internally provided with a stress rib extending into the cantilever beam, the cantilever beam is internally provided with a vertical rib, and the lower structure beam, the cantilever beam and the flat table top are integrally cast and formed.

Furthermore, the platform surface and the lower extension section are provided with building surface layers.

Further, the first polytetrafluoroethylene plate completely covers the upper end face of the cantilever beam.

Furthermore, the first polytetrafluoroethylene plate is fixed on the cantilever beam through a screw.

Furthermore, the first polytetrafluoroethylene plate is fixed on the cantilever beam through an adhesive.

Compared with the prior art, the utility model has the following beneficial effects:

(1) the utility model is provided with an expansion joint between the lower extension section and the flat table top, a first polytetrafluoroethylene plate is arranged between the upper end surface of the cantilever beam and the lower end surface of the lower extension section, so that a sliding gap also exists between the lower extension section and the lower structural beam, the sliding gap is integrally reserved between the upper end of the stair and the upper structural beam and between the lower end of the stair and the lower structural beam, the limit state of the limit column between the upper extension section and the mounting groove can lose effectiveness due to larger horizontal limit force of the lower end of the stair, so that the horizontal pulling force of the building body to the upper end of the stair is weakened, at the moment, the upper extension section and the mounting groove generate relative movement, the sliding amplitude between the lower extension section and the lower structural beam is further reduced, the relative movement is not easy to generate, the complementation of the sliding amplitude between the upper end and the lower end of the stair and the upper structural beam and the lower structural beam is realized by weakening the horizontal pulling force of the building body to the upper end and the lower end of the stair, the problem that the lower end of the stair is separated from the lower structural beam due to the fact that the building body generates large horizontal tension on the upper end of the stair under the condition that the shaking amplitude is large in the existing high-rise and super high-rise buildings is solved, the stair slipping condition of the stair from the lower structural beam is reduced, and the safety of the stair of the high-rise and super high-rise buildings is integrally improved;

(2) according to the utility model, the upper end surface of the cantilever beam is provided with the arc-shaped convex surface and the lower horizontal lapping surfaces symmetrically arranged at two sides of the arc-shaped convex surface, the lower end surface of the lower extension section is correspondingly provided with the arc-shaped concave surface and the upper horizontal lapping surfaces symmetrically arranged at two sides of the arc-shaped concave surface, the arc-shaped convex surface is contacted with the arc-shaped concave surface, and the upper horizontal lapping surfaces are contacted with the lower horizontal lapping surfaces;

(3) the width of the lower horizontal lapping surface of the arc-shaped convex surface close to one side of the end part of the outrigger is larger than that of the upper horizontal lapping surface of the arc-shaped concave surface close to one side of the end part of the upper extending section, and after the arc-shaped concave surface crosses the highest point of the arc-shaped convex surface, the lower horizontal lapping surface of the arc-shaped convex surface close to one side of the end part of the outrigger can still effectively support the upper horizontal lapping surface of the arc-shaped concave surface close to one side of the end part of the upper extending section, so that the situation that a staircase directly slips off from a lower structural beam is avoided for the second time, and the safety is good;

(4) according to the utility model, the expansion joint is internally and sequentially provided with the foam rod, the silicone weather-resistant adhesive and the seam beautifying agent from bottom to top, the expansion joint is generally filled with the polystyrene board in the traditional technology, the polystyrene board has short service life and cannot meet the long-time use requirement of a building, the foam rod is filled at the bottom of the expansion joint, the silicone weather-resistant adhesive is filled at the upper part of the foam rod and can ensure long-time use, the silicone weather-resistant adhesive has strong flexibility and can meet the relative movement between a stair and a lower structural beam in a certain range, and the seam beautifying improves the flatness and the attractiveness of the overall surface appearance of the building.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic structural view of an arc-shaped concave surface;

the reference numbers in the figures illustrate:

1. the stair comprises a stair body, an upper structural beam, a lower structural beam, an upper extension section, a mounting groove, a limiting column, a platform surface, a cantilever beam, a building surface layer, a lower extension section, a slot, a first polytetrafluoroethylene plate, a second polytetrafluoroethylene plate, a third polytetrafluoroethylene plate, a fourth polytetrafluoroethylene plate, a fifth polytetrafluoroethylene plate, a sixth polytetrafluoroethylene plate, a fifth polytetrafluoroethylene plate, a sixth polytetrafluoroethylene plate, a fifth polytetrafluoroethylene plate, a sixth polytetrafluoroethylene plate, a fifth section, a sixth polytetrafluoroethylene plate, a fifth section, a sixth polytetrafluoroethylene plate, a fifth section, a sixth section, a fifth section, a sixth section, a fourth section, a fifth section, a fourth section, a sixth section, a fourth, a sixth section, a fourth, a fifth section, a sixth section, a fourth section, a sixth section, a fourth section, a fifth section, a sixth section.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

A building stair structure with up-and-down sliding supports, as shown in figures 1 and 2, comprises an upper structural beam 2 connected in sequence, stair 1 and lower structural beam 3, stair 1's upper end level is equipped with extension 4, it is equipped with opening orientation upper extension 4's mounting groove 5 to go up structural beam 2 and go up the level, the length of going up extension 4 is less than the degree of depth of mounting groove 5, it inserts in mounting groove 5 to go up extension 4, be equipped with spacing post 6 between mounting groove 5 and the last extension 4, be equipped with landing deck 7 and outrigger 8 on the lower structural beam 3, landing deck 7 highly is greater than outrigger 8's height, stair 1's lower extreme level is equipped with down extension 10, the lower terminal surface contact of first polytetrafluoroethylene board 12 and lower extension 10 is passed through to outrigger 8 up end, be equipped with expansion joint 11 between lower extension 10 and the landing deck 7, be equipped with building surface 9 on landing deck 7 and the lower extension 10.

The length of the upper extension section 4 is less than the depth of the mounting groove 5, so that a sliding gap exists between the upper extension section 4 and the upper structural beam 2, the limiting column 6 can increase the limiting force between the stair 1 and the upper structural beam 2, because an expansion joint 11 is arranged between the lower extension section 10 and the flat platform surface 7, and a first polytetrafluoroethylene plate 12 is arranged between the upper end surface of the cantilever beam 8 and the lower end surface of the lower extension section 10, so that a sliding gap also exists between the lower extension section 10 and the lower structural beam 3, so that the sliding gaps are integrally reserved between the upper end of the stair 1 and the upper structural beam 2 and between the lower end of the stair 1 and the lower structural beam 3, the limiting state of the limiting column 6 between the upper extension section 4 and the mounting groove 5 can fail due to the larger horizontal limiting force at the lower end of the stair 1, so that the horizontal tension of the building body on the upper end of the stair 1 is weakened, and the upper extension section 4 and the mounting groove 5 are relatively moved, and then reduced the slip range between lower extension 10 and the lower structure roof beam 3, be difficult for producing relative movement by a relatively large margin each other, through weakening building body to the horizontal pulling force of stair 1 upper and lower extreme realize the stair 1 upper and lower end respectively with the complementation of the slip range between upper structure roof beam 2 and the lower structure roof beam 3, solved among the current high-rise and super high-rise building, because building body produces great horizontal pulling force to stair 1 upper end under the great condition of range of rocking, thereby make the problem that stair 1 lower extreme breaks away from the lower structure roof beam, reduced the condition emergence of stair 1 slippage from the lower structure roof beam 3, the security of stair 1 of high-rise and super high-rise building has been promoted on the whole.

As shown in fig. 3, the upper end face of the outrigger 8 is provided with an arc convex surface 13 and lower horizontal lapping surfaces 15 symmetrically arranged on two sides of the arc convex surface 13, the lower end face of the lower extension section 10 is correspondingly provided with an arc concave surface 14 and upper horizontal lapping surfaces 16 symmetrically arranged on two sides of the arc concave surface 14, the arc convex surface 13 contacts with the arc concave surface 14, the upper horizontal lapping surfaces 16 contact with the lower horizontal lapping surfaces 15, and in an earthquake, due to the matching design of the arc convex surface 13 and the arc concave surface 14, the upper horizontal lapping surfaces have the effect of increasing the horizontal limiting force between the lower end of the stair 1 and the lower structural beam 3.

The width d of the lower horizontal lapping surface 15 of the arc convex surface 13 close to one side of the end part of the outrigger 8₂Is larger than the width d of the upper horizontal overlapping surface 16 at the side of the arc-shaped concave surface 14 close to the end part of the upper extension section 4₁After the arc-shaped concave surface 14 crosses the highest point of the arc-shaped convex surface 13, the lower horizontal lapping surface 15 of the arc-shaped convex surface 13 close to one side of the end part of the cantilever beam 8 can still effectively support the upper horizontal lapping surface 16 of the arc-shaped concave surface 14 close to one side of the end part of the upper extension section 4, the situation that the stair 1 directly slips from the lower structural beam 3 is avoided for the second time, and the safety is good.

The width of the expansion joint 11 is 50 mm-60 mm, and a foam rod 17, a silicone weather-resistant adhesive 18 and a seam beautifying agent 19 which is uniform with the color and the patterns of the building surface layer 9 are sequentially arranged in the expansion joint 11 from bottom to top;

the polyphenyl board is generally filled in expansion joint 11 department to the conventional art, polyphenyl board life is shorter, can't satisfy the long-time user demand of building, consequently, this embodiment adopts foam rod 17 and silicone weather resistant adhesive 18, foam rod 17 fills in the bottom at expansion joint 11, silicone weather resistant adhesive 18 fills on foam rod 17's upper portion, can guarantee long-time use, silicone weather resistant adhesive 18 elasticity is strong, can satisfy the relative movement of certain range between stair 1 and the lower structure roof beam 3, beautiful seam 19 has promoted the roughness and the pleasing to the eye degree of the whole surface outward appearance of building.

The inside wall of mounting groove 5 is equipped with second poly tetrafluoroethylene board 22, and spacing post 6 both ends are passed behind the second poly tetrafluoroethylene board 22 and are connected with upper structure roof beam 2.

The lower structural beam 3 is internally provided with a stress rib 20 extending into the outrigger 8, the outrigger 8 is internally provided with a standing rib 21, the lower structural beam 3, the outrigger 8 and the flat table top 7 are integrally cast, the stress rib 20 is made of three-level steel with the diameter of 12@150, and the standing rib 21 is made of three-level steel with the diameter of 12@ 100.

The first polytetrafluoroethylene plate 12 is fixed on the cantilever beam 8 through a screw, the upper end face of the cantilever beam 8 is completely covered by the first polytetrafluoroethylene plate 12, and the thickness of the first polytetrafluoroethylene plate 12 is 5-10 mm.

Example 2

In this embodiment, the first polytetrafluoroethylene sheet 12 is fixed to the cantilever 8 by an adhesive, and the rest is the same as in embodiment 1.

Embodiment 1 and embodiment 2 provide a building stair structure with upper and lower sliding support, the structural design of upper and lower sliding support is more reasonable, to high-rise and super high-rise building, can weaken the building body simultaneously to the horizontal direction's that stair 1 upper and lower end produced in the earthquake pulling force, stair 1 upper and lower end respectively with go up the structure roof beam 2 and the lower structure roof beam 3 between the slip range has complementary effect, reduced the condition emergence that stair 1 slipped from lower structure roof beam 3, promoted high-rise and super high-rise building stair 1's security on the whole.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A building stair structure with up-down sliding support comprises an upper structural beam (2), a stair (1) and a lower structural beam (3) which are sequentially connected, and is characterized in that an upper extension section (4) is horizontally arranged at the upper end of the stair (1), a mounting groove (5) with an opening facing the upper extension section (4) is horizontally arranged on the upper structural beam (2), the length of the upper extension section (4) is smaller than the depth of the mounting groove (5), the upper extension section (4) is inserted into the mounting groove (5), a limiting column (6) is arranged between the mounting groove (5) and the upper extension section (4), a platform surface (7) and a cantilever beam (8) are arranged on the lower structural beam (3), the height of the platform surface (7) is larger than that of the cantilever beam (8), and a lower extension section (10) is horizontally arranged at the lower end of the stair (1), cantilever beam (8) up end through the contact of the lower terminal surface of first polytetrafluoroethylene board (12) and lower extension section (10), lower extension section (10) and level mesa (7) between be equipped with expansion joint (11).

2. The stair structure with upper and lower sliding supports according to claim 1, wherein the upper end surface of the cantilever beam (8) is provided with an arc convex surface (13) and lower horizontal lapping surfaces (15) symmetrically arranged on both sides of the arc convex surface (13), the lower end surface of the lower extension section (10) is correspondingly provided with an arc concave surface (14) and upper horizontal lapping surfaces (16) symmetrically arranged on both sides of the arc concave surface (14), the arc convex surface (13) is contacted with the arc concave surface (14), and the upper horizontal lapping surfaces (16) are contacted with the lower horizontal lapping surfaces (15).

3. The stair structure with upper and lower sliding supports according to claim 2, wherein the width of the lower horizontal overlapping surface (15) of the curved convex surface (13) near the end of the outrigger (8) is larger than the width of the upper horizontal overlapping surface (16) of the curved concave surface (14) near the end of the upper extension (4).

4. The building stair structure with up-down sliding support according to claim 1, wherein the expansion joint (11) is provided with a foam bar (17), a silicone weather-resistant adhesive (18) and a crack sealer (19) in sequence from bottom to top.

5. The building stair structure with the up-and-down sliding support according to claim 1, wherein a second polytetrafluoroethylene plate (22) is arranged on the inner side wall of the mounting groove (5), and two ends of the limiting column (6) penetrate through the second polytetrafluoroethylene plate (22) and then are connected with the upper structural beam (2).

6. The stair structure with the upper and lower sliding supports according to claim 1, wherein stress ribs (20) extending into the outriggers (8) are arranged in the lower structural beam (3), erection ribs (21) are arranged in the outriggers (8), and the lower structural beam (3), the outriggers (8) and the flat platform surface (7) are integrally cast.

7. The stair structure with sliding upper and lower supports according to claim 1, wherein said platform surface (7) and said lower extension (10) are provided with a building surface (9).

8. The stair structure with sliding upper and lower supports according to claim 1, wherein said first teflon plate (12) covers the upper end surface of the outrigger (8) completely.

9. The stair structure with sliding upper and lower supports according to claim 1, wherein said first teflon plate (12) is fixed to the outrigger (8) by means of screws.

10. The stair structure with sliding upper and lower supports according to claim 1, wherein said first teflon plate (12) is fixed to the outrigger (8) by means of adhesive.