CN218406135U - Subway station public area vertical-sliding stair structure - Google Patents

Abstract

The utility model provides a subway station public area vertical-sliding stair structure, include lower bench, middle platform, go up the bench and encorbelment the device. The bottom of the top of the lower bench is respectively connected with the platform plate and the middle platform; the top and the bottom of the upper ladder section are respectively connected with the free end of the cantilever device and the middle platform; the lower part of the middle platform is provided with two stair crossbeams and four stair columns; the cantilever device consists of two variable cross-section cantilever beams, a supporting cross beam and an upper platform plate, and the fixed end of the cantilever device is connected to the main beam at the hole side of the station hall layer. The utility model discloses an it reduces the bench span to arrange the device of encorbelmenting to go up the bench span, so that the vertical stair structure adopts the board-like stair form, can effectively reduce the enclosed area on stair lower part platform layer, increases the horizontal current width on platform layer of standing, improves the permeability of platform layer sight of standing, and board-like stair simple structure, and construction convenience can better ground saving construction period.

Description

Subway station public area vertical-sliding stair structure

Technical Field

The utility model belongs to the technical field of the rail transit, concretely relates to subway station public area vertical-sliding stair structure.

Background

In the current urban rail transit engineering, a common subway station with a double-column three-span structure and a single-span structure without columns is respectively provided with an upper double staircase and a lower double staircase and a straight staircase from a station hall layer to a station platform layer, the straight staircases are arranged between the double staircases and are influenced by the escalators at two sides, and the span of the upper step section of the middle straight staircases can reach 7.4m to 8.1m. The traditional plate type stair form is not suitable any more due to too large span, but a beam type stair form is required, however, the beam height of the beam type stair is large, the space of a platform at the lower part of the stair is invaded, the area of a public area of a platform layer is reduced, and the design goals of increasing the transverse passing width of the platform, improving the permeability of the sight line of the platform layer and reducing the oppressive feeling of the subway platform are violated. In addition, beam type stair structural member is many, and the construction is complicated, and construction speed is slower, is unfavorable for accelerating stair structure's construction period.

Disclosure of Invention

In order to overcome the problem that exists among the background art, the utility model provides a subway station public area vertical-sliding stair structure, set up the span that the device of encorbelmenting reduces the bench through standing the hall layer, avoid adopting beam type stair structural style, and still can adopt the board-like stair form, can effectively release stair lower part platform space, increase platform layer public area, increase the horizontal current width of platform, improve the permeability of platform layer sight, and board-like stair structural style is simple, construction convenience just can practice thrift construction period.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

a vertical stair structure in a public area of a subway station comprises a lower stair section, a middle platform, an upper stair section and an overhanging device. The bottom of the lower stair section is connected with a platform plate of a station platform layer, the bottom of the lower stair section is also provided with a plate bottom stair beam and two plate bottom stair columns, and the top of the lower stair section is connected with the middle platform; the bottom of the upper ladder section is connected with the middle platform, and the top of the upper ladder section is connected with a supporting beam of the cantilever device; two platform stair beams along the width direction of the upper stair section are arranged at the lower part of the middle platform, two ends of each platform stair beam vertically extend downwards to the platform plate to form a platform stair column, and the bottom of the platform stair column penetrates through the platform plate and then is supported on the station bottom plate; the cantilever device comprises two cantilever beams arranged along the length direction of the vertical stair, a supporting cross beam arranged along the width direction of the vertical stair and an upper platform plate positioned at the top of the supporting cross beam, wherein the fixed end of the cantilever beam is supported on a main beam at the hole edge of a station hall layer, and the two ends of the supporting cross beam are respectively connected with the free ends of the cantilever beams.

Preferably, the cantilever device and the hole-side girder are integrally implemented in advance, the support beam is internally provided with an embedded steel bar connector and embedded steel bars, and the upper ladder section is provided with internal longitudinal steel bars and is reliably connected with the embedded steel bar connector.

Preferably, the cross-sectional height of the fixed end of the cantilever beam is 1/5 to 1/6 of the span of the fixed end of the cantilever beam, the cross-sectional height of the free end is equal to the cross-sectional height of the supporting beam and is smaller than the cross-sectional height of the fixed end of the cantilever beam, and the cantilever beam and the supporting beam both need to meet the requirement of stress calculation.

Preferably, the bottom of the landing stair post is supported on the station floor through the station deck.

Preferably, the upper stair section, the middle platform, the lower stair section, the platform stair beams and the platform stair posts above the platform plate are integrally cast by reinforced concrete materials, so that the safety and the reliability of the cantilever device are improved.

Preferably, the vertical distance between the bottom of the upper bench and the station deck is not less than 2.4m.

Preferably, an escalator is provided on each of both sides of the vertical running staircase, and the escalator is provided in close proximity to the vertical running staircase.

The utility model has the advantages that:

the utility model provides a subway station public area vertical-sliding stair structure reduces the span of going up the bench through setting up the device of encorbelmenting on the station hall layer, avoids adopting beam type stair structural style, can effectively release stair lower part platform space, increases station layer public area, increases the horizontal current width of platform, improves the permeability of station layer sight, has reduced the sense of oppression of subway platform, and board-like stair structure simple structure, and construction period can also be practiced thrift to convenient construction.

Drawings

Fig. 1 is a top view of the dual-column three-span subway station vertical stair structure of the present invention, which is overlooked downward from the lobby floor of the subway station;

fig. 2 is a top view of the straight-run stair structure of the present invention looking down from the platform floor of the subway station;

FIG. 3 isbase:Sub>A cross-sectional view taken along A-A of the vertical stair structure of the present invention;

fig. 4 is a top view of the pillar-free single-span subway station vertical stair structure of the present invention looking down from the lobby floor of the subway station;

fig. 5 is the utility model discloses a go up bench and the device connection reinforcing bar sketch map of encorbelmenting of vertical stair structure.

In the figure, A-station hall layer, B-station platform layer, 11-lower stair section, 12-middle platform, 13-upper stair section, 14-overhanging device (141-supporting beam, 142-overhanging beam, 143-upper platform plate), 15-platform stair column, 16-platform stair beam, 17-plate bottom stair column, 18-plate bottom stair beam, 19-stair hole, 20-staircase, 21-station middle plate, 22-hole edge main beam, 23-middle longitudinal beam, 24-frame column, 25-station platform plate, 26-station bottom plate, 31-embedded steel bar connector, 32-embedded steel bar, 33-upper stair section longitudinal steel bar, H1-vertical distance between the bottom of upper stair section 13 and platform plate 24.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.

As shown in fig. 1 to 5, the vertical stair structure for the public area of the subway station comprises a lower stair section 11, an intermediate platform 12, an upper stair section 13 and an overhanging device 14. The bottom of the lower stair section 11 is connected with a platform plate 25 of a station platform layer B, the bottom of the lower stair section is provided with a slab-bottom stair beam 18, two ends of the slab-bottom stair beam 18 are respectively provided with a slab-bottom stair column 17 which vertically faces downwards, and the top of the lower stair section 11 is connected with the middle platform 12; the bottom of the upper ladder section 13 is connected with the middle platform 12, and the top is connected with a supporting beam 141 of the cantilever device 14; two platform stair beams 16 along the width direction of the straight running stair are arranged at the lower part of the middle platform 12, two ends of each platform stair beam 16 vertically extend downwards towards the station platform plate 25 to form a platform stair post 15, and the platform stair post 15 passes through the station platform plate 25 and is supported on the station bottom plate 26; the cantilever device 14 consists of two cantilever beams 142 arranged along the length direction of the stairs, a supporting beam 141 arranged along the width direction of the stairs and an upper platform plate 143 positioned at the tops of the cantilever beams 142 and the supporting beam 141; the fixed end of the cantilever beam 142 is connected to the main beam 22 at the hole side A of the station hall layer, and the two ends of the supporting beam 141 are respectively connected with the free ends of the two cantilever beams 142; the embedded steel bar connector 31 and the embedded steel bar 32 are arranged in the supporting beam 141, and the longitudinal steel bar 33 in the upper bench 13 is reliably connected with the embedded steel bar connector 31 of the supporting beam 141.

The stairs 20 are respectively arranged at two sides of the straight-running stair structure, and the stairs 20 are arranged close to the straight-running stair structure.

The subway station public area straight-running stair structure is characterized in that a station bottom plate 26, a platform plate 25, a plate bottom stair column 17, a plate bottom stair cross beam 18, a station middle plate 21 and a frame column 24 are constructed firstly, a stair hole 19 is reserved when the station middle plate 21 is constructed, a hole edge main beam 22 and a middle longitudinal beam 23 which is longitudinally arranged along a station are arranged on the hole 19 side, a cantilever device 14 which consists of two cantilever beams 142, a supporting cross beam 141 and an upper platform plate 143 needs to be constructed with the hole edge main beam 22 and the station middle plate 21 at the same time and is integrally cast, and an embedded steel bar 32 and an embedded steel bar connector 31 need to be arranged inside the supporting cross beam 141 before concrete is cast; then, effectively connecting the longitudinal steel bars 33 in the upper stair section with the embedded steel bar connector 31, and binding steel bars of other components of the vertical stair structure; and finally, integrally pouring an upper stair section 13, a middle platform 12, a lower stair section 11, platform stair pillars 15 and platform stair cross beams 16 which are positioned above the station bedplate 25 of the straight-running stair structure by adopting a concrete material so as to increase the connecting capacity among all components of the straight-running stair structure and improve the integrity of the straight-running stair structure.

The first point to be described is that the vertical distance H1 between the bottom of the upper stair section 13 and the platform plate 25 is not less than 2.4m, so as to increase the transverse passing width of the platform layer B, improve the permeability of the sight line of the platform layer B and reduce the oppressive feeling of the subway platform layer B.

The second point to be described is that the cross-sectional height of the fixed end of the cantilever beam 142 is preferably 1/5 to 1/6 of the span, the cross-sectional height of the free end is the same as the cross-sectional height of the supporting beam 141 and is smaller than the cross-sectional height of the fixed end of the cantilever beam 142, and the cantilever beam 142 and the supporting beam 141 both need to meet the requirement of stress calculation.

The third point to be described is that both ends of the hole side girder 22 of the double-column three-span subway station in the embodiment of fig. 1 are supported on the center longitudinal beam 23, while both ends of the hole side girder 22 of the non-column single-span subway station in the embodiment of fig. 4 are supported on the side wall of the station, and the difference of the supporting points of both ends of the hole side girder 22 has a small influence on the arrangement of the cantilever apparatus 14.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims (7)

1. The utility model provides a subway station public area vertical-sliding stair structure which characterized in that: comprises a lower ladder section (11), an upper ladder section (13), a cantilever device (14) and a middle platform (12) connecting the upper ladder section (13) and the lower ladder section (11); the bottom of the lower stair section (11) is connected with a platform plate (25) of a station platform layer (B), and the bottom of the lower stair section (11) is also provided with a slab bottom stair beam (18) and two slab bottom stair columns (17); the top of the upper ladder section (13) is connected with the free end of the cantilever device (14); the middle platform (12) is supported on two platform stair beams (16), and each platform stair beam (16) vertically extends downwards towards the station plate (25) to form a platform stair column (15); the cantilever device (14) consists of two cantilever beams (142) arranged along the length direction of the stairs, a supporting cross beam (141) arranged along the width direction of the stairs and an upper platform plate (143) positioned at the tops of the cantilever beams and the supporting cross beam; the fixed end of the cantilever beam (142) is connected with the main beam (22) at the hole side of the station hall layer (A), and the two ends of the supporting cross beam (141) are connected with the free ends of the two cantilever beams (142).

2. The subway station public area vertical-running stair structure according to claim 1, wherein: the cantilever device (14) and the hole side girder (22) are integrally implemented in advance, the supporting crossbeam (141) is internally provided with an embedded steel bar connector (31) and an embedded steel bar (32), and the upper bench section (13) is configured with an internal longitudinal steel bar (33) in the later stage and is reliably connected with the embedded steel bar connector (31).

3. The vertical stair structure for subway stations public areas according to any one of claims 1-2, wherein: the cross section height of the fixed end of the cantilever beam (142) is 1/5-1/6 of the span of the fixed end, and the cross section height of the free end of the cantilever beam (142) is equal to that of the supporting cross beam (141) and is smaller than that of the fixed end of the cantilever beam (142).

4. The vertical stair structure for subway stations public areas according to any one of claims 1-2, wherein: the bottom of the platform stair post (15) passes through the station platform plate (25) and is supported on a station bottom plate (26).

5. The vertical stair structure for public areas of subway stations as claimed in any one of claims 1 to 2, wherein: the upper stair section (13), the middle platform (12), the lower stair section (11), the platform stair beam (16) and the platform stair columns (15) above the station platform plate (25) are integrally poured by reinforced concrete materials.

6. The vertical stair structure for subway stations public areas according to any one of claims 1-2, wherein: the vertical distance (H1) between the bottom of the upper ladder section (13) and the station plate (25) is not less than 2.4m.

7. The vertical stair structure for public areas of subway stations as claimed in any one of claims 1 to 2, wherein: the two sides of the straight running stair structure are respectively provided with an escalator (20), and the escalators (20) are arranged close to the straight running stair structure.

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