CN218091693U

CN218091693U - Assembled stair structure

Info

Publication number: CN218091693U
Application number: CN202221331543.8U
Authority: CN
Inventors: 周学军; 王彤彤; 杨朔; 门洪滔
Original assignee: Jinan Jianda Steel Structure Technology Co ltd
Current assignee: Jinan Jianda Steel Structure Technology Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-12-20
Anticipated expiration: 2032-05-30

Abstract

The utility model discloses an assembled stair structure, belonging to the technical field of buildings, comprising an upper stair body and a lower stair body, wherein a stair middle plate is connected between the upper stair body and the lower stair body; the stair intermediate plate comprises light steel keels which are welded in a crossed mode, foam concrete is filled in a space formed by the light steel keels in a crossed mode, and fine aggregate concrete protective layers and cement mortar protective layers are laid on the upper side face and the lower side face of each light steel keel of the stair intermediate plate respectively. The light steel keel of the middle plate of the stair can be recycled; and the light steel keels are welded in a crossed manner and combined with the light foam concrete, so that good bearing capacity and light weight can be guaranteed, the heat preservation, fire prevention and sound insulation performance is good, the stair climbing body, the stair descending body and the stair intermediate plate can be formed in a modularized mode in a factory, the field construction workload is greatly reduced, the assembly and construction speed is high, the assembly rate is high, the field wet operation is less, and the construction period is greatly shortened.

Description

Assembled stair structure

Technical Field

The utility model belongs to the technical field of the building, specifically speaking is an assembled stair structure.

Background

With the greatly increased demand of people for houses, the requirements on living conditions are higher and higher, so that the construction industry is rapidly developed.

The prefabricated building is characterized in that structural components are prefabricated in advance in a processing plant and connected through methods such as mechanical connection and the like on a construction site, and the single components are assembled into a whole. The comparison of the assembly type building and the cast-in-place building can find that the assembly type building components are only required to be manufactured in advance in a prefabricating factory, and the construction site only needs mechanical connection, so that the construction time is greatly reduced, the overall construction cost is reduced, and meanwhile, the requirement of green development is met.

Present assembled stair, the structure is complicated, and the construction is loaded down with trivial details, and the cost is higher, and assembly efficiency is low, and construction period is longer.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an assembled stair structure, simple structure, it is with low costs, the modularization equipment mode can effectively improve the convenience of construction, effectively shortens construction period.

The utility model discloses a realize through following technical scheme:

an assembled stair structure comprises a stair room formed by enclosing wall plates, and an upper stair body and a lower stair body which are arranged in the stair room, wherein a stair middle plate is connected between the upper stair body and the lower stair body; the stair intermediate plate comprises light steel keels which are welded in a crossed mode, foam concrete is filled in a space formed by the light steel keels in a crossed mode, and fine aggregate concrete protective layers and cement mortar protective layers are laid on the upper side face and the lower side face of each light steel keel of the stair intermediate plate respectively.

The utility model is further improved in that when the stairs are bottom stairs, the lower end of the lower stair body is connected and installed with the foundation through the fixing bolt; a stair supporting beam which is used for supporting the upper end of the lower stair body and the middle stair plate together, supporting the lower end of the upper stair body and the middle stair plate together and supporting the upper end of the upper stair body and the upper floor panel together is arranged between the left side wall plate and the right side wall plate of the staircase; the upper end of the lower stair body, the upper end and the lower end of the upper stair body, the stair middle plate and the floor plate on the upper layer are respectively connected and installed with the stair supporting cross beam through fixing bolts.

The utility model is further improved by that when the staircase is a non-bottom staircase, a staircase supporting beam which is used for supporting the lower end of the lower staircase body and the lower floor slab together, the upper end of the lower staircase body and the middle staircase slab together, the lower end of the upper staircase body and the middle staircase slab together and the upper end of the upper staircase body and the upper floor slab together are arranged between the left side wall board and the right side wall board of the staircase; the upper and lower ends of the lower stair body, the upper and lower ends of the upper stair body, the stair middle plate, the upper and lower floor plates are respectively connected with the stair supporting beams through fixing bolts for positioning and installation.

The utility model discloses a further improvement still, the upper portion of fixing bolt hookup location is seted up flutedly.

The utility model discloses a further improvement still, stair supporting beam is the I-steel structure.

The utility model discloses a further improvement still installs the intermediate lamella support frame that supports stair intermediate lamella rear portion on the curb plate about the stairwell.

The utility model discloses a further improvement still, the intermediate lamella support frame is square steel tube structure, is equipped with the light gauge steel of staircase direction open-ended dorsad in the side wall board about the staircase, and this light gauge steel web passes through the bolted connection installation with the intermediate lamella support frame, and the intussuseption of intermediate lamella support frame is equipped with the pea gravel concrete filling layer.

The utility model discloses a further improvement still installs the crossbeam support frame that supports stair support beam both ends on the wallboard of the left and right sides of staircase respectively.

The utility model is further improved in that the beam support frame is of a square steel tube structure, light steel keels with openings facing away from the direction of the staircase are arranged in the wallboards at the left side and the right side of the staircase, the web plates of the light steel keels are connected and installed with the beam support frame through bolts, and the beam support frame is filled with a fine aggregate concrete filling layer; the stair supporting beam is connected and installed with the upper part of the beam supporting frame through a bolt.

According to the technical solution provided by the utility model, the beneficial effects are that:

the light steel keel of the middle plate of the stair can be recycled; and the light steel keels are welded in a crossed manner and combined with the light foam concrete, so that good bearing capacity and light weight can be guaranteed, the heat preservation, fire prevention and sound insulation performance is good, the stair climbing body, the stair descending body and the stair intermediate plate can be formed in a modularized mode in a factory, the field construction workload is greatly reduced, the assembly and construction speed is high, the assembly rate is high, the field wet operation is less, and the construction period is greatly shortened.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic top sectional view of a building structure according to an embodiment of the present invention.

Fig. 2 is a schematic side view of a building structure according to an embodiment of the present invention.

Fig. 3 is a schematic view of a wall panel structure according to an embodiment of the present invention.

Fig. 4 is a schematic side view of a wall panel according to an embodiment of the present invention.

Fig. 5 is a schematic top sectional view of an embodiment of a wall panel according to the present invention.

Fig. 6 is a schematic top cross-sectional view of another embodiment of a wall panel according to embodiments of the present invention.

Fig. 7 is a schematic view of a sectional structure of a floor panel according to an embodiment of the present invention.

Fig. 8 is a schematic top view of a floor panel according to an embodiment of the present invention.

Fig. 9 is a schematic top view of the stair according to the embodiment of the present invention.

FIG. 10 is a schematic cross-sectional view of R-R in FIG. 9.

Fig. 11 is a schematic cross-sectional view of T-T in fig. 9.

Fig. 12 is a schematic structural view of the stair body according to the embodiment of the present invention.

Fig. 13 is a schematic view of the connection structure of the lower stair body and the foundation according to the embodiment of the present invention.

Fig. 14 is a schematic view of the connection structure between the upstairs body and the floor slab according to the embodiment of the present invention.

Fig. 15 is a schematic view of the connection structure of the lower stair body and the middle plate of the stair according to the embodiment of the present invention.

Fig. 16 is a schematic view of a connecting structure between the stair ascending body and the stair middle plate according to an embodiment of the present invention.

Fig. 17 is a schematic view of an installation structure of a middle plate support frame according to an embodiment of the present invention.

Fig. 18 is a schematic view of a cross beam support frame mounting structure according to an embodiment of the present invention.

In the drawings: 100. wallboard, 200, floor board, 300, foundation, 400, stair, 1, light gauge steel, 2, foam concrete, 3, cement mortar protective layer, 4, steel wire net piece, 9, pea gravel concrete filling layer, 10, pea gravel concrete protective layer, 11, reinforcing bar rack, 17, PLASTIC LAMINATED, 18, the body of downstairs, 19, the body of upstairs, 20, the middle board of stair, 21, stair supporting beam, 22, middle board support frame, 23, crossbeam support frame, 24, fixing bolt, 25, recess.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments in this patent without making creative efforts, shall fall within the protection scope of this patent.

As shown in fig. 9-18, the present invention discloses an assembled stair structure, which can be applied to the assembled light steel composite board building structure as in fig. 1-2, comprising a wall panel 100 and a floor panel 200;

as shown in fig. 3-8, the wall panel 100 and the floor panel 200 both comprise light steel joists 1 welded in a cross manner, the light steel joists 1 welded in a cross manner so as to form a support frame, and a rectangular space formed by the light steel joists 1 welded in a cross manner is filled with lightweight foam concrete 2;

cement mortar protective layers 3 are paved on two side surfaces of the supporting frame of the wallboard 100; the upper and lower sides of the supporting frame of the floor panel 200 are respectively paved with a fine stone concrete protective layer 10 and a cement mortar protective layer 3. The two sides of the wallboard 100 and the lower side surface of the floor panel 200 are protected by cement mortar protective layers 3, so that good structural performance is ensured; the upper side of the floor panel 200 is protected by a fine stone concrete protective layer 10, and the floor panel is used as a panel which is frequently stepped on, so that good protective performance and sound insulation are ensured.

The supporting frames in the wallboard 100 and the floor panel 200 can be recycled, so that a large amount of steel is prevented from being consumed in the house building process, and the environment is protected; and the light steel keel 1 is welded in a crossed manner and combined with the light foam concrete 2, so that good bearing capacity and light weight can be guaranteed, the heat-insulation fireproof performance is good, the light steel keel can be formed in a modularized manner in a factory, the housing industrialization can be realized, the field construction workload is greatly reduced, the assembly construction speed is high, the assembly rate is high, the field wet operation is less, and the construction period is greatly shortened.

As shown in fig. 5-7, a bidirectional steel wire mesh 4 is arranged in the cement mortar protective layer 3, and the diameter of meshes of the steel wire mesh 4 is 2.5mm. The cement mortar protective layer 3 is structurally reinforced through the steel wire mesh 4 so as to improve the integrity of the cement mortar protective layer 3; in addition, in order to prevent cracking, alkali-resistant glass fiber mesh cloth needs to be pasted on the outer side of the cement mortar protective layer 3 during plastering.

As shown in fig. 7-8, a bidirectional steel bar net rack 11 is arranged in the fine aggregate concrete protective layer 10, and the aperture of the steel bar net rack 11 is 6mm. The whole bearing capacity of the floor plate 200 is improved through the reinforcing steel bar net rack 11, and the structural strength of the floor plate 200 is ensured.

Wherein, the light steel keel 1 is of a channel steel structure, and wing plates at two sides of the light steel keel are arranged close to plate surfaces at two sides. The light steel keel 1 of the channel steel structure has light weight and good structural performance, ensures that the wallboard 100 and the floor panel 200 have the characteristics of light weight and good bearing performance, and is convenient to prefabricate and assemble.

Wherein, two edges of the light steel keel 1 are bent inwards to form flanges. The bending resistance of the light steel keel 1 is improved, and the good structural performance of the support frame is ensured; and the connection firmness with the foam concrete 2 is improved.

Wherein, the vertical light gauge steel 1 of wallboard 100 leads to long setting, horizontal light gauge steel 1 breaks the setting, and the vertical light gauge steel 1 of wallboard 100 is a whole strip that leads to long promptly, and horizontal light gauge steel 1 welds between adjacent vertical light gauge steel 1. The convenience of the welding construction of the light steel keels 1 is guaranteed, and the vertical light steel keels 1 are arranged in a full length mode, so that the two wallboards 100 can be conveniently butted.

As shown in fig. 9 to 18, the fabricated staircase structure includes a staircase space defined by three wall panels 100 and a staircase 400 disposed in the staircase space, wherein the staircase 400 includes an upper staircase body 19 and a lower staircase body 18, and a staircase middle panel 20 connected and installed by the wall panels 100 is connected between the upper staircase body 19 and the lower staircase body 18; the structure of the stair intermediate plate 20 is the same as that of the floor plate 200, the structure comprises light steel keels 1 of channel steel structures which are welded in a crossed mode, foam concrete 2 is filled in spaces formed by the light steel keels 1 in a crossed mode, fine aggregate concrete protective layers 10 and cement mortar protective layers 3 are laid on the upper side face and the lower side face of each light steel keel 1 of the stair intermediate plate 20 respectively, and the upper stair body 19 and the lower stair body 18 are made of foam concrete materials and have good structural performance and light quality. Whole stair 400 simple structure, the modularization equipment mode can effectively improve the convenience of construction, effectively shortens construction period.

When the stair 400 is arranged between the first floor and the second floor of a building, the lower end of the lower stair body 18 is connected with the foundation 300 through the fixing bolt 24; a stair supporting beam 21 which is used for supporting the upper end of the lower stair body 18 and the middle stair plate 20 together, supporting the lower end of the upper stair body 19 and the middle stair plate 20 together and supporting the upper end of the upper stair body 19 and the upper floor panel 200 together is arranged between the left side wall plate 100 and the right side wall plate 100 of the staircase; the upper end of the lower stair body 18, the upper end and the lower end of the upper stair body 19, the stair middle plate 20 and the floor plate 200 on the upper layer are respectively connected and installed with the stair supporting beam 21 through fixing bolts 24. Through a dry type connecting mode of bolt connection, the contribution of the staircase to the overall rigidity of the structure is greatly reduced; meanwhile, the bolt connection mode can generate larger deformation displacement under the action of an earthquake, the acting force of the main body structure on the fabricated concrete stair can be reduced, and the fabricated concrete stair is protected. The stair structure can be applied to stair installation of a first floor and a second floor of a multi-floor building or stair installation of a second floor of the multi-floor building.

When the staircase 400 is arranged above three floors of a building structure, a staircase supporting beam 21 is arranged between the left side wall plate 100 and the right side wall plate 100 of the staircase for supporting the lower end of the lower staircase body 18 and the lower floor slab 200 together, supporting the upper end of the lower staircase body 18 and the middle staircase slab 20 together, supporting the lower end of the upper staircase body 19 and the middle staircase slab 20 together, and supporting the upper end of the upper staircase body 19 and the upper floor slab 200 together; the upper and lower ends of the lower stair body 18, the upper and lower ends of the upper stair body 19, the stair middle plate 20, the upper and lower floor boards 200 are respectively connected with the stair supporting beams 21 through fixing bolts 24 for positioning installation. The stair structure can be applied to the installation of more than three layers of stairs of a multi-layer building. Through a dry type connecting mode of bolt connection, the contribution of the staircase to the overall rigidity of the structure is greatly reduced; meanwhile, the bolt connection mode can generate larger deformation displacement under the earthquake action, the acting force of the main body structure on the fabricated concrete stair can be reduced, and the fabricated concrete stair is protected.

Wherein, the upper portion of the fixing bolt 24 junction position is seted up flutedly 25 to hold, keep away the nut of position and fixing bolt 24 swing joint installation, later stage uses mortar to cover, pave.

The fixing bolt 24 is installed in a penetrating connection with the light steel keel 1 inside the floor panel 200, and the reliability of the connection and installation of the fixing bolt 24 and the floor panel 200 is guaranteed.

Wherein, the stair supporting beam 21 is in an I-shaped steel structure. The stair supporting beam 21 has good structural strength and light weight, and convenience in construction and installation is guaranteed.

The left and right side wall plates 100 of the staircase are provided with middle plate support frames 22 which support and mount the rear part of the staircase middle plate 20. The left wall plate 100 and the right wall plate 100 of the staircase are internally provided with two transverse light steel keels 1 with opposite openings and are also welded with the vertical light steel keels 1 in the staircase, the middle plate support frame 22 is of a square steel tube structure, and a web plate of the light steel keel 1 close to one side of the staircase is connected and installed with the middle plate support frame 22 through bolts. The middle plate support frame 22 is convenient to install and firm in fixation, and reliable support for the rear portion of the middle plate 20 of the stair is effectively achieved.

Wherein, the intermediate plate support frame 22 is filled with the fine aggregate concrete filling layer 9. The good bearing performance of the stair middle plate 20 is improved. The beam is equivalent to a steel pipe concrete beam, effectively improves the constraint effect on core concrete, is more beneficial to fully playing the performance advantages of two materials, and improves the bearing capacity of the beam.

The middle plate support frame 22 is installed in a penetrating connection with the light steel keel 1 in the middle plate 20 of the stair through the fixing bolt 24, and the reliability of the support connection of the middle plate support frame 22 to the middle plate 20 of the stair is guaranteed.

The middle plate support frame 22 is an L-shaped bent structure, and the rear surface thereof is connected and installed with the wall plate 100 at the rear side of the staircase in the same manner as the connection with the left and right side wall plates 100 of the staircase. The middle plate support frame 22 is installed at the corner positions of the rear side wall plate 100 and the left and right side wall plates 100 of the staircase, so that the reliability and the stability of the middle plate support frame 22 for supporting the middle plate 20 of the staircase are effectively improved.

Wherein, the left wall plate 100 and the right wall plate 100 of the staircase are respectively provided with a beam support frame 23 for supporting two ends of the staircase support beam 21. The connecting structure of the beam support frame 23 and the wall plate 100 is the same as that of the middle plate support frame 22 and the wall plate 100; be equipped with two horizontal light gauge steel 1 that the opening is relative in the wallboard 100 about the stairwell to also weld with vertical light gauge steel 1 in it, crossbeam support frame 23 is square steel tube structure, and the installation of bolted connection is passed through with crossbeam support frame 23 to light gauge steel 1 web that is close to stairwell one side, and crossbeam support frame 23 intussuseption is filled with pea gravel concreten filling layer 9. The two ends of the stair supporting beam 21 are supported through the beam supporting frames 23 arranged on the left wall plate 100 and the right wall plate 100 of the staircase, and the reliable stability of the stair supporting beam 21 for supporting the front part of the stair middle plate 20 is effectively guaranteed.

The stair support cross beam 21 and the upper part of the cross beam support frame 23 are connected through bolts and positioned. The reliable stability of the supporting connection of the cross beam supporting frame 23 to the stair supporting cross beam 21 is ensured.

The outer sides of the beam support frame 23, the middle plate support frame 22 and the stair support beam 21 are all provided with fireproof plates 17. The overall fire resistance is improved and the appearance is improved by the covering and decoration of the fire-proof plate 17.

The assembled stair structure is simple in structure and convenient and fast to assemble, and the light steel keels of the stair middle plate can be recycled; and the light steel keels are welded in a crossed manner and combined with the light foam concrete, so that good bearing capacity and light weight can be guaranteed, the heat preservation, fire prevention and sound insulation performance is good, the stair climbing body, the stair descending body and the stair intermediate plate can be formed in a modularized mode in a factory, the field construction workload is greatly reduced, the assembly and construction speed is high, the assembly rate is high, the field wet operation is less, and the construction period is greatly shortened.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative relationships in positions, if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An assembled stair structure is characterized by comprising a stair room formed by enclosing wall plates (100), an upper stair body (19) and a lower stair body (18) arranged in the stair room, wherein a middle stair plate (20) is connected between the upper stair body (19) and the lower stair body (18); the stair intermediate plate (20) comprises light steel keels (1) which are welded in a crossed mode, foam concrete (2) is filled in a space formed by the light steel keels (1) in a crossed mode, and a fine aggregate concrete protective layer (10) and a cement mortar protective layer (3) are laid on the upper side face and the lower side face of each light steel keel (1) of the stair intermediate plate (20) respectively.

2. The fabricated stair structure of claim 1, wherein when the stair (400) is a bottom stair, the lower end of the lower stair body (18) is installed in connection with the foundation (300) by means of the fixing bolt (24); a stair supporting beam (21) which supports the upper end of the lower stair body (18) and the middle stair plate (20) together, supports the lower end of the upper stair body (19) and the middle stair plate (20) together and supports the upper end of the upper stair body (19) and the upper floor panel (200) together is arranged between the left side wall plate (100) and the right side wall plate (100) of the staircase; the upper end of the lower stair body (18), the upper end and the lower end of the upper stair body (19), the stair middle plate (20) and the floor plate (200) on the upper layer are respectively connected and installed with the stair supporting beam (21) through fixing bolts (24).

3. The fabricated stair structure of claim 1, wherein when the stair (400) is a non-bottom stair, a stair supporting beam (21) for supporting the lower end of the lower stair body (18) and the lower floor slab (200), the upper end of the lower stair body (18) and the middle stair slab (20), the lower end of the upper stair body (19) and the middle stair slab (20), and the upper end of the upper stair body (19) and the upper floor slab (200) are installed between the left and right side wall slabs (100) of the stair chamber; the upper end and the lower end of the lower stair body (18), the upper end and the lower end of the upper stair body (19), the stair middle plate (20), the upper floor plate and the lower floor plate (200) are respectively connected with a stair supporting beam (21) through fixing bolts (24) for positioning and installation.

4. A fabricated staircase structure as defined in claim 2 or 3, characterised in that the upper part of the attachment points of the fixing bolts (24) are provided with recesses (25).

5. Fabricated staircase structure as claimed in claim 2 or 3, characterized in that the staircase supporting beams (21) are of i-steel construction.

6. The fabricated stair structure according to claim 2 or 3, wherein the left and right side wall panels (100) of the staircase are provided with middle plate support frames (22) for supporting the rear portion of the stair middle plate (20).

7. The fabricated stair structure according to claim 6, wherein the middle plate support frame (22) is of a square steel tube structure, light steel keels (1) with openings facing away from the direction of the stair well are arranged in left and right side wall plates (100) of the stair well, webs of the light steel keels (1) are connected with the middle plate support frame (22) through bolts, and the middle plate support frame (22) is filled with a fine aggregate concrete filling layer (9).

8. The fabricated staircase structure of claim 2 or 3, wherein the staircase has left and right wall panels (100) with beam supports (23) for supporting the two ends of the staircase support beam (21).

9. The assembled stair structure according to claim 8, wherein the cross beam support frame (23) is of a square steel tube structure, light steel keels (1) with openings facing away from the direction of the staircase are arranged in wall plates (100) on the left side and the right side of the staircase, webs of the light steel keels (1) are connected and installed with the cross beam support frame (23) through bolts, and a fine aggregate concrete filling layer (9) is filled in the cross beam support frame (23); the stair supporting cross beam (21) is connected and installed with the upper part of the cross beam supporting frame (23) through bolts.