Stair sliding support structure with raised lines

Abstract

The utility model belongs to the field of constructional engineering, and provides a stair sliding support structure with raised lines, which comprises a stair beam and a stair inclined stair section, protruding strips are arranged on the upper surfaces of the stair beams, sliding medium layers are arranged on the upper surfaces of the stair beams and the upper surfaces of the protruding strips, grooves are formed in the bottom faces of the stair inclined stair sections, the protruding strips are embedded into the grooves, the inner top faces of the grooves abut against the sliding medium layers on the upper surfaces of the protruding strips, and the bottom faces of the stair inclined stair sections abut against the sliding medium layers on the upper surfaces of the stair beams. And a sliding cavity is formed between the raised line and the inner side wall of the groove. According to the stair sliding support structure, under the condition that the use space of the lower portion of the stair flight is not affected, the sliding function of the stair is achieved, and meanwhile the situation that the stair flight falls off horizontally under the special working condition can be prevented. The method has obvious advantages in construction operability and construction quality, and has the advantages of being safe in structure, convenient to construct, reliable to use and the like.

Description

Technical Field

[0001] The utility model belongs to the field of construction engineering, and particularly relates to a stair sliding support structure with convex strips. Background Art

[0002] As an evacuation passage, the staircase plays a very important role in the entire building structure. However, from past earthquake damage experience, it is found that the staircase is severely damaged during earthquakes, affecting the evacuation of people on the floors and turning the escape passage into a dangerous passage. Therefore, the staircase should have good seismic performance and be able to play a safety protection function during earthquakes and open up the life passage. Therefore, setting the staircase into a ladder structure system can be independent of other main structures and reduce the adverse effects of the main structure on the staircase.

[0003] In order to improve the seismic capacity of the staircase, in the prior art, generally, a sliding support is installed at the end of the inclined staircase section, so that the staircase can generate sliding displacement during vibration, release the seismic force, protect the safety of the staircase, and prevent the escape passage from being damaged.

[0004] However, the existing stair sliding support is a planar design, and the end of the inclined staircase section is directly placed on the support plane. In the case of large earthquakes, strong vibrations and other working conditions, there may be a risk of horizontal detachment between the inclined staircase section and the ladder beam, resulting in the staircase, as an escape passage, being unable to perform its due vertical traffic function in the building. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a stair sliding support structure with convex strips, which can prevent the horizontal detachment of the inclined staircase section under special working conditions.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a stair sliding support structure with convex strips, including a ladder beam and an inclined staircase section;

[0007] The upper surface of the ladder beam is provided with convex strips, and sliding medium layers are provided on the upper surface of the ladder beam and the upper surface of the convex strips. A groove is opened on the bottom surface of the inclined staircase section, and the convex strips are embedded in the groove. The top surface inside the groove abuts against the sliding medium layer on the upper surface of the convex strips, and the bottom surface of the inclined staircase section abuts against the sliding medium layer on the upper surface of the ladder beam, so as to form a sliding cavity between the convex strips and the inner side wall of the groove.

[0008] Preferably, the convex strips and the ladder beam are integrally formed.

[0009] Preferably, both the convex strips and the groove are of strip-shaped structures.

[0010] Preferably, the convex strips are centrally arranged on the ladder beam.

[0011] Preferably, the width of the rib is ≥100 mm, the height of the rib is ≥50 mm, and the edge distance d of the rib is ≥200 mm.

[0012] Preferably, the width of the sliding cavity is ≥ the product value of the structural elastoplastic inter-story drift angle limit value and the height of the flight.

[0013] Preferably, the inclined flight of the staircase is a precast staircase flight or a cast-in-place flight.

[0014] Preferably, the sliding medium layer is a polytetrafluoroethylene plate or a steel plate.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The staircase sliding bearing structure with ribs provided by the present utility model realizes the sliding function of the staircase under the condition of not affecting the use space below the flight, and can prevent the horizontal detachment of the flight under special working conditions. It has obvious advantages in construction operability and construction quality, and has the advantages of structural safety, convenient construction, and reliable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic side view structure of a staircase sliding bearing structure with ribs provided by an embodiment of the present utility model;

[0018] Figure 2 FIG. is a schematic side view structure of the inclined flight of a staircase sliding bearing structure with ribs provided by an embodiment of the present utility model;

[0019] Figure 3 FIG. is a schematic side view structure of a stringer of a staircase sliding bearing structure with ribs provided by an embodiment of the present utility model;

[0020] Figure 4 FIG. is a schematic plan view structure of a stringer of a staircase sliding bearing structure with ribs provided by an embodiment of the present utility model;

[0021] Figure 5 FIG. is a schematic bottom view structure of the inclined flight of a staircase sliding bearing structure with ribs provided by an embodiment of the present utility model;

[0022] Figure 6 is Figure 1 the sectional view structure at A-A in;

[0023] Figure 7 FIG. is a schematic top view structure of the buffer structure between the ribs and the grooves of a staircase sliding bearing structure with ribs provided by an embodiment of the present utility model.

[0024] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0025] 1. Ladder beam; 2. Inclined ladder section of the staircase; 3. Rib; 4. Sliding cavity; 5. Sliding medium layer; 6. Groove. Detailed implementation mode

[0026] The following further elaborates on the present utility model in conjunction with specific embodiments, so that those skilled in the art can understand the present utility model more clearly.

[0027] It should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" in the terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For those of ordinary skill in the art, the specific meanings of such terms in the present utility model can be understood according to specific circumstances.

[0028] Embodiment 1

[0029] Refer to Figures 1 - 3 , a staircase sliding support structure with ribs, including a ladder beam 1 and an inclined ladder section 2 of the staircase. The ladder beam 1 is located below and mainly plays a supporting role, and the bottom end of the inclined ladder section 2 of the staircase is placed on the ladder beam 1.

[0030] In order to prevent the situation that the inclined ladder section 2 of the staircase and the ladder beam 1 fall off horizontally under special working conditions, ribs 3 are provided on the upper surface of the ladder beam 1, and grooves 6 are provided on the bottom surface of the inclined ladder section 2 of the staircase. The ribs 3 are embedded in the grooves 6, so that the grooves 6 can play a limiting role on the ribs 3, and further prevent the inclined ladder section 2 of the staircase and the ladder beam 1 from falling off horizontally.

[0031] Among them, the ribs 3 and the ladder beam 1 are integrally cast. The inclined ladder section 2 of the staircase can be a precast staircase section or a cast-in-place section.

[0032] Refer to Figures 4 - 5 , both the ribs 3 and the grooves 6 can be strip-shaped structures, and the ribs 3 are centrally arranged on the ladder beam 1. The width of the ribs 3 ≥ 100 mm, the height of the ribs 3 ≥ 50 mm, and the edge distance d of the ribs 3 ≥ 200 mm.

[0033] In order to reduce the contact friction between the ladder beam 1 and the inclined ladder section 2 of the staircase and ensure that the inclined ladder section 2 of the staircase can slide freely under special working conditions such as earthquakes, sliding medium layers 5 are provided on the upper surface of the ladder beam 1 and the upper surface of the ribs 3. Optionally, the sliding medium layer 5 is made of a polytetrafluoroethylene plate or a steel plate.

[0034] Among them, the inner top surface of the groove 6 abuts against the sliding medium layer 5 on the upper surface of the rib 3, and the bottom surface of the inclined staircase section 2 abuts against the sliding medium layer 5 on the upper surface of the beam 1, so as to form an annular sliding cavity 4 between the inner side wall of the rib 3 and the groove 6. The width of the sliding cavity 4 ≥ the product value of the structural elastic-plastic inter-story drift angle limit value and the staircase section height, so that the bottom end of the inclined staircase section 2 has a suitable displacement space.

[0035] It can be understood that while the upper surface of the beam 1 supports the bottom surface of the inclined staircase section 2, the upper surface of the rib 3 also supports the inner top surface of the groove 6, thereby increasing the stress area of the inclined staircase section 2 and preventing a large gap from occurring between the inclined staircase section 2 and the beam 1, resulting in uneven stress of the inclined staircase section 2, reduced structural strength, and shortened service life.

[0036] In summary, the construction method of the staircase sliding bearing structure provided in this embodiment can include the following process:

[0037] S1. The rib 3 is integrally cast with the beam 1 in advance according to the design, and after curing to reach the design strength;

[0038] S2. Lay the sliding medium layer 5 on the upper surfaces of the beam 1 and the rib 3;

[0039] S3. Install the precast inclined staircase section 2 in place by buckling through the groove 6 and the rib 3, or formwork and pour the inclined staircase section 2 on the construction site according to the rib 3 and the sliding cavity 4. After curing, the sliding function of the inclined staircase section 2 can be realized.

[0040] The staircase sliding bearing structure provided in this embodiment can not only solve the problem of setting the sliding bearing of the inclined staircase section, but also prevent the horizontal detachment of the staircase section under special working conditions. It has obvious advantages in construction operability and construction quality, does not affect the use space under the staircase section, and has the advantages of structural safety, convenient construction, and reliable use.

[0041] Embodiment 2

[0042] On the basis of Embodiment 1, a buffer structure is provided on the outer side wall of the rib 3 to avoid rigid collision between the outer side wall of the rib 3 and the inner side wall of the groove 6 under special working conditions.

[0043] For example, a rubber layer is provided along the circumference on the outer side wall of the rib 3. When a special working condition occurs, the inclined staircase section 2 slides horizontally, and the rubber layer on the outer side wall of the rib 3 can play a buffering role to avoid rigid collision between the outer side wall of the rib 3 and the inner side wall of the groove 6.

[0044] In some embodiments, the buffer structure can be a spring. Specifically, see Figure 7, a plurality of springs are provided along the circumferential direction on the outer side wall of the rib 3. The springs are horizontally arranged, the inner ends of the springs are connected to the outer side wall of the rib 3, and the outer ends of the springs are connected to the inner side wall of the groove 6. The springs can play a buffering role and can prevent the stairs from shaking violently, causing injuries to the people on the stairs. In addition, the springs can also improve the stability of the stairs.

[0045] Embodiment 3

[0046] On the basis of Embodiment 1, the sliding medium layer 5 can be adhesively fixed on the upper surface of the ladder beam 1. The adhesive can be a mortar layer. Specifically, the sliding medium layer 5 is a polytetrafluoroethylene plate. There is a mortar layer between the polytetrafluoroethylene plate and the ladder beam 1, and the polytetrafluoroethylene plate is laid on the upper surface of the ladder beam 1 through the mortar layer. Among them, the bottom surface of the polytetrafluoroethylene plate can be an uneven structure. For example, the bottom surface of the polytetrafluoroethylene plate is provided with friction lines, which can increase the contact area between the polytetrafluoroethylene plate and the mortar layer, thereby improving the adhesive stability of the polytetrafluoroethylene plate.

[0047] In the present utility model, the mechanisms, components, and parts that are not described in detail in terms of specific structure are all existing structures that already exist in the prior art and can be directly purchased from the market.

[0048] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0049] The above is only the preferred implementation of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A staircase sliding support structure with convex strips, characterized in that: It comprises a ladder beam (1) and a staircase inclined flight (2); The upper surface of the ladder beam (1) is provided with a convex strip (3), and the upper surfaces of the ladder beam (1) and the convex strip (3) are both provided with a sliding medium layer (5). The bottom surface of the stair inclined step (2) is provided with a groove (6), and the convex strip (3) is embedded in the groove (6). The top surface of the groove (6) abuts against the sliding medium layer (5) on the upper surface of the convex strip (3), and the bottom surface of the stair inclined step (2) abuts against the sliding medium layer (5) on the upper surface of the ladder beam (1), so that a sliding cavity (4) is formed between the convex strip (3) and the inner wall of the groove (6).

2. A staircase sliding support structure with convex strips according to claim 1, characterized in that: The convex strip (3) and the ladder beam (1) are integrally formed.

3. A staircase sliding support structure with convex strips according to claim 1, characterized in that: The convex strip (3) and the concave groove (6) are both long strip structures.

4. A staircase sliding support structure with convex strips according to claim 1, characterized in that: The convex strip (3) is centrally arranged on the ladder beam (1).

5. A staircase sliding support structure with convex strips according to claim 1, characterized in that: The width of the convex strip (3) is ≥100 mm, the height of the convex strip (3) is ≥50 mm, and the margin d of the convex strip (3) is ≥200 mm.

6. A staircase sliding support structure with convex strips according to claim 1, characterized in that: The width of the sliding cavity (4) is greater than or equal to the product of the structural elastic-plastic inter-layer displacement angle limit value and the step height.

7. A staircase sliding support structure with convex strips according to claim 1, characterized in that: The inclined staircase flight (2) is a prefabricated staircase flight or a cast-in-place flight.

8. The staircase sliding support structure with convex strips according to claim 1, characterized in that: The sliding medium layer (5) is a polytetrafluoroethylene plate or a steel plate.

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