CN118223600A - Sliding support for cast-in-situ anti-seismic stair and construction method thereof - Google Patents

Abstract

The invention relates to a sliding support for a cast-in-situ anti-seismic stair and a construction method thereof, wherein the sliding support for the cast-in-situ anti-seismic stair comprises a steel plate and a plurality of supporting steel bars, and the supporting steel bars are vertically welded on one side surface of the steel plate in two rows; the steel plate is rectangular, the steel plate comprises long sides and short sides, and the two rows of supporting steel bars are arranged at positions, close to the two long sides, of the steel plate. The sliding support is formed by welding the steel bars and the steel plates which can meet the anti-seismic requirement, can be installed in stair concrete by using the supporting steel bars to play an anchoring role, and has good structural stability.

Description

Sliding support for cast-in-situ anti-seismic stair and construction method thereof

Technical Field

The invention relates to the technical field related to building construction, in particular to a sliding support for cast-in-situ anti-seismic stairs and a construction method thereof.

Background

At present, the earthquake-proof requirements of buildings are more and more strict, the existing building stairway is generally formed by directly pouring concrete into a whole, the assembled stairway is also generally poured after being directly bound with the building by reinforcing steel bars, and the connecting mode of directly pouring into a whole is easy to cause the risk of damaging the whole stairway when encountering earthquake disasters.

Disclosure of Invention

The invention provides a sliding support for cast-in-situ anti-seismic stairs and a construction method thereof, aiming at solving one or more of the technical problems in the prior art.

The technical scheme for solving the technical problems is as follows: a sliding support for cast-in-situ anti-seismic stairs comprises a steel plate and a plurality of supporting steel bars, wherein the supporting steel bars are vertically welded on one side surface of the steel plate in two rows; the steel plate is rectangular, the steel plate comprises long sides and short sides, and the two rows of supporting steel bars are arranged at positions, close to the two long sides, of the steel plate.

The beneficial effects of the invention are as follows: the sliding support is formed by welding the steel bars and the steel plates which can meet the anti-seismic requirement, can be installed in stair concrete by using the supporting steel bars to play an anchoring role, and has good structural stability.

On the basis of the technical scheme, the invention can be improved as follows.

Further, the thickness of the steel plate is greater than the diameter of the supporting reinforcement.

Further, the steel plate comprises a reinforcing steel bar, wherein the reinforcing steel bar is of an L-shaped structure, and one end of the reinforcing steel bar is vertically fixed and welded with one side surface of the steel plate; the reinforcing steel bars and the supporting steel bars are positioned on the same side face of the steel plate.

The beneficial effects of adopting the further scheme are as follows: by arranging the reinforcing steel bars, the anchoring acting force between the sliding support and the concrete is further enhanced.

Further, the number of the reinforcing steel bars is four, and one reinforcing steel bar is respectively arranged on two sides of each row of the arrangement direction of the supporting steel bars.

Further, the reinforcing steel bar comprises a connecting section and an extending section which are integrally connected, the connecting section is vertically and fixedly welded with one side face of the steel plate, the extending section extends towards the direction away from the supporting steel bars, and the extending direction of the extending section is the same as the arrangement direction of a row of the supporting steel bars.

Further, the extension section is arranged in parallel with the steel plate.

Further, a distance between one side of the extension section, which is away from the steel plate, and the steel plate is a, and a distance between the free end of the supporting steel bar and the steel plate is B, wherein a=b.

Further, the free end of the extension does not exceed the short side of the steel plate.

Further, the reinforcing steel bar further comprises a transition section, the transition section is integrally connected between the connecting section and the extending section, and the transition section is of a circular arc structure.

A construction method of a sliding support for cast-in-situ anti-seismic stairs comprises the following steps:

S1, after binding of an assembled stair reinforcement template is completed, the upper end lower surface and the lower end lower surface of the assembled stair reinforcement template are horizontal planes, and supporting reinforcements of a sliding support for cast-in-situ anti-seismic stairs are bound in the upper end inner part and the lower end inner part of the assembled stair reinforcement template, so that a steel plate is attached to the upper end lower surface or the lower end lower surface of the assembled stair reinforcement template; after concrete is poured into the assembled stair reinforced bar template, an assembled stair with sliding supports at the upper end and the lower end is formed;

S2, respectively mounting the cast-in-situ anti-seismic stair sliding supports on an upper floor slab template and a lower floor slab template which are connected with the upper end and the lower end of the assembled stair, so that a steel plate of the cast-in-situ anti-seismic stair sliding support on the upper floor slab template is positioned on the upper surface of the upper floor slab template, and a steel plate of the cast-in-situ anti-seismic stair sliding support on the lower floor slab template is positioned on the upper surface of the lower floor slab template; pouring concrete in the upper floor slab template and the lower floor slab template to form an upper floor slab and a lower floor slab;

S3, mounting the assembled stair with sliding supports at the upper end and the lower end between the upper floor slab template and the lower floor slab template, and arranging a layer of graphite powder on steel plates of the lower floor slab and the sliding supports of the upper floor slab, so that the sliding supports at the upper end of the assembled stair are attached to the sliding supports on the upper floor slab, and the sliding supports at the lower end of the assembled stair are attached to the sliding supports on the lower floor slab;

S4, connecting the upper end of the assembled stair with the upper floor plate through a connecting piece, and connecting the lower end of the assembled stair with the lower floor plate through a connecting piece.

The beneficial effects of the invention are as follows: according to the construction method, the sliding supports are arranged at the upper end and the lower end of the assembled stair, so that sliding fit connection between the assembled stair and the floor slab can be met, the stair is ensured not to be broken in brittleness due to earthquake vibration by utilizing the rigidity of the assembled stair and the floor slab and the anti-sliding function of the sliding supports, the damage of building components in the earthquake is reduced as much as possible by means of the anti-sliding function of the bottom, and therefore the earthquake-proof requirement of the building structure in the earthquake is met, and enough time, space and channels are provided for safe evacuation of people.

Drawings

FIG. 1 is a schematic diagram of a cross-sectional structure of a sliding support for a cast-in-situ earthquake-resistant stair of the invention;

FIG. 2 is a schematic diagram II of a cross-sectional structure of the sliding support for the cast-in-situ earthquake-resistant stair;

FIG. 3 is a schematic diagram of the front view structure of the sliding support for the cast-in-situ earthquake-resistant stair of the invention;

fig. 4 is a schematic diagram of an assembly structure of the sliding support for the cast-in-situ earthquake-resistant stair.

In the drawings, the list of components represented by the various numbers is as follows:

100. a steel plate; 101. supporting the steel bar; 102. a connection section; 103. an extension section; 104. a transition section; 105. reinforcing steel bars;

200. assembled stairs; 201. graphite powder; 202. a polyimide plate;

300. And (5) a lower floor slab.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

As shown in fig. 1 to 4, the sliding support for the cast-in-situ earthquake-resistant stair of the embodiment comprises a steel plate 100 and a plurality of supporting steel bars 101, wherein the supporting steel bars 101 are vertically welded on one side surface of the steel plate 100 in two rows; the steel plate 100 has a rectangular shape, the steel plate 100 includes long sides and short sides, and two rows of the supporting bars 101 are disposed at positions of the steel plate 100 near the two long sides.

In a preferred embodiment of this embodiment, the thickness of the steel plate 100 is greater than the diameter of the supporting reinforcement 101.

As shown in fig. 2, in an alternative scheme of this embodiment, the sliding support further includes a reinforcing steel bar 105, where the reinforcing steel bar 105 has an L-shaped structure, and one end of the reinforcing steel bar 105 is welded to one side of the steel plate 100 in a fixed manner; the reinforcing steel bars 105 are located on the same side of the steel plate 100 as the supporting steel bars 101. By arranging the reinforcing steel bars, the anchoring acting force between the sliding support and the concrete is further enhanced.

Preferably, four reinforcing steel bars 105 are provided, and each reinforcing steel bar 105 is provided on two sides of each row of the supporting steel bars 101 in the arrangement direction.

Further, as shown in fig. 2, the reinforcing steel bar 105 includes a connecting section 102 and an extending section 103 that are integrally connected, the connecting section 102 is welded to a side surface of the steel plate 100 in a vertical fixing manner, the extending section 103 extends in a direction away from the supporting steel bar 101, and an extending direction of the extending section 103 is the same as an arrangement direction of a row of the supporting steel bars 101.

As shown in fig. 2, the extension 103 is arranged in parallel with the steel plate 100.

As shown in fig. 2, a distance between a side of the extension 103 facing away from the steel plate 100 and the steel plate 100 is a, and a distance between a free end of the support bar 101 and the steel plate 100 is B, where a=b. The stability of the whole structure is better.

As shown in fig. 2, the free end of the extension 103 does not extend beyond the short side of the steel plate 100.

As shown in fig. 2, the reinforcing steel 105 further includes a transition section 104, where the transition section 104 is integrally connected between the connection section 102 and the extension section 103, and the transition section 104 has a circular arc structure.

The sliding support of this embodiment adopts steel bar and steel sheet welding that can satisfy the antidetonation requirement to form, can utilize the supporting reinforcement to install and play the anchor effect in stair concrete, and structural stability is good.

The embodiment also provides a construction method of the sliding support for the cast-in-situ anti-seismic stair, which comprises the following steps:

S1, after binding of an assembled stair reinforcement bar template is completed, the upper end lower surface and the lower end lower surface of the assembled stair reinforcement bar template are horizontal planes, and supporting reinforcements 101 of a sliding support for cast-in-situ anti-seismic stairs are bound in the upper end inner part and the lower end inner part of the assembled stair reinforcement bar template, so that a steel plate 100 is attached to the upper end lower surface or the lower end lower surface of the assembled stair reinforcement bar template; after concrete is poured into the assembled stair reinforced bar template, an assembled stair 200 with sliding supports at the upper end and the lower end is formed;

S2, respectively mounting the cast-in-situ anti-seismic stair sliding supports on an upper floor slab template and a lower floor slab template which are connected with the upper end and the lower end of the assembled stair 200, so that a steel plate of the cast-in-situ anti-seismic stair sliding support on the upper floor slab template is positioned on the upper surface of the upper floor slab template, and a steel plate of the cast-in-situ anti-seismic stair sliding support on the lower floor slab template is positioned on the upper surface of the lower floor slab template; pouring concrete in the upper floor slab template and the lower floor slab template to form an upper floor slab and a lower floor slab 300;

S3, mounting the assembled stair 200 with sliding supports at the upper end and the lower end between the upper floor slab template and the lower floor slab template, and arranging a layer of graphite powder 201 on the lower floor slab 300 and the steel plate 100 of the sliding supports of the upper floor slab, so that the sliding supports at the upper end of the assembled stair 200 are attached to the sliding supports on the upper floor slab, and the sliding supports at the lower end of the assembled stair 200 are attached to the sliding supports on the lower floor slab 300;

S4, connecting the upper end of the assembled stair 200 with the upper floor slab through a connecting piece, and connecting the lower end of the assembled stair 200 with the lower floor slab 300 through a connecting piece. The connecting piece can adopt a bolt and nut connecting component and the like.

Further, since gaps are reserved between the end faces of the left and right ends of the fabricated stairway 200 and the floor slab, polyimide plates 202 can be filled in the gaps.

According to the construction method, the sliding supports are arranged at the upper end and the lower end of the assembled stair, sliding fit connection between the assembled stair and the floor slab can be met, the stair is guaranteed not to be broken in brittleness due to earthquake vibration by utilizing the rigidity of the assembled stair and the floor slab and the anti-sliding function of the sliding supports, the damage of building components in the earthquake is reduced as much as possible by means of the anti-sliding function of the bottom, so that the earthquake-proof requirement of the building structure in the earthquake is met, and enough time, space and channels are provided for safe evacuation of people.

The reinforced steel bars and the concrete used in the invention meet the earthquake-proof design requirement and the use requirement, and the rigidity and reasonable structure of the reinforced steel bars and the concrete are utilized to meet the earthquake-proof requirement of the building.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1. The sliding support for the cast-in-situ anti-seismic stair is characterized by comprising a steel plate and a plurality of supporting steel bars, wherein the supporting steel bars are vertically welded on one side surface of the steel plate in two rows; the steel plate is rectangular, the steel plate comprises long sides and short sides, and the two rows of supporting steel bars are arranged at positions, close to the two long sides, of the steel plate.

2. A shoe for cast-in-place earthquake-resistant stairs as set forth in claim 1, wherein the thickness of said steel plate is greater than the diameter of said supporting reinforcement.

3. The sliding support for the cast-in-situ earthquake-resistant stair is characterized by further comprising reinforcing steel bars, wherein the reinforcing steel bars are of L-shaped structures, and one ends of the reinforcing steel bars are vertically fixedly welded with one side surface of the steel plate; the reinforcing steel bars and the supporting steel bars are positioned on the same side face of the steel plate.

4. A sliding support for cast-in-situ earthquake-resistant stairs according to claim 3, wherein the number of reinforcing steel bars is four, and each of the reinforcing steel bars is arranged on two sides of each row of the supporting steel bars in the arrangement direction.

5. The sliding support for the cast-in-situ earthquake-resistant stair according to claim 4, wherein the reinforcing steel bars comprise integrally connected connecting sections and extending sections, the connecting sections are vertically fixedly welded with one side surface of the steel plate, the extending sections extend towards a direction away from the supporting steel bars, and the extending directions of the extending sections are the same as the arrangement directions of the supporting steel bars in a row.

6. A sliding support for cast-in-situ anti-seismic stairway according to claim 5, wherein the extension is arranged parallel to the steel plate.

7. The sliding support for the cast-in-situ earthquake-resistant stair according to claim 5, wherein the distance between one side of the extension section away from the steel plate and the steel plate is a, and the distance between the free end of the supporting steel bar and the steel plate is B, wherein a=b.

8. A shoe for cast-in-place earthquake-resistant stairs according to claim 5, characterized in that the free end of said extension does not exceed the short side of said steel plate.

9. The sliding support for the cast-in-situ anti-seismic stair according to claim 5, wherein the reinforcing steel bar further comprises a transition section, the transition section is integrally connected between the connecting section and the extending section, and the transition section is of a circular arc structure.

10. A method of constructing a sliding support for a cast-in-place earthquake-resistant stairway according to any one of claims 1 to 9, comprising the steps of:

S1, after binding of an assembled stair reinforcement template is completed, the upper end lower surface and the lower end lower surface of the assembled stair reinforcement template are horizontal planes, and supporting reinforcements of a sliding support for cast-in-situ anti-seismic stairs are bound in the upper end inner part and the lower end inner part of the assembled stair reinforcement template, so that a steel plate is attached to the upper end lower surface or the lower end lower surface of the assembled stair reinforcement template; after concrete is poured into the assembled stair reinforced bar template, an assembled stair with sliding supports at the upper end and the lower end is formed;

S2, respectively mounting the cast-in-situ anti-seismic stair sliding supports on an upper floor slab template and a lower floor slab template which are connected with the upper end and the lower end of the assembled stair, so that a steel plate of the cast-in-situ anti-seismic stair sliding support on the upper floor slab template is positioned on the upper surface of the upper floor slab template, and a steel plate of the cast-in-situ anti-seismic stair sliding support on the lower floor slab template is positioned on the upper surface of the lower floor slab template; pouring concrete in the upper floor slab template and the lower floor slab template to form an upper floor slab and a lower floor slab;

S3, mounting the assembled stair with sliding supports at the upper end and the lower end between the upper floor slab template and the lower floor slab template, and arranging a layer of graphite powder on steel plates of the lower floor slab and the sliding supports of the upper floor slab, so that the sliding supports at the upper end of the assembled stair are attached to the sliding supports on the upper floor slab, and the sliding supports at the lower end of the assembled stair are attached to the sliding supports on the lower floor slab;

S4, connecting the upper end of the assembled stair with the upper floor plate through a connecting piece, and connecting the lower end of the assembled stair with the lower floor plate through a connecting piece.