CN111456346A - Novel beam type stair are assembled in prefabrication of board structure of marking time - Google Patents

Abstract

The utility model provides a beam type stair is assembled in prefabrication of novel board structure of marking time, is guaranteeing under safe and reliable's the prerequisite, can be better be applicable to space restricted engineering such as subway station, and has better commonality and convenience. The ladder column component is a prefabricated molding component, and the lower end of the ladder column component is fixedly connected with the structural bottom plate through a connecting component; the step plate component is provided with a step plate, an upturned rib plate and a lower hanging rib plate which are positioned at the rear end of the step plate component, the cross section of the step plate component is in a T shape lying down, the longitudinal two ends of the step plate are respectively supported on the sawtooth-shaped mounting platforms of the stair beam component at the same side, the upturned rib plate is abutted against the vertical wall between the adjacent sawtooth-shaped mounting platforms, and the longitudinal two ends of the lower hanging rib plate are respectively abutted against the inner side wall of the stair beam component at the same side. The upper mounting hole and the lower mounting hole are correspondingly formed in the plate surfaces on the two longitudinal sides of the pedal and the zigzag mounting platform of the stair beam component, and the lower end of the railing component penetrates through the upper mounting hole, is inserted into the lower mounting hole and is fixedly connected with the upper mounting hole and the lower mounting hole.

Description

Novel beam type stair are assembled in prefabrication of board structure of marking time

Technical Field

The invention relates to buildings, in particular to a prefabricated assembled beam type stair with a novel tread plate structure, which is well suitable for application scenes that the construction space of an inner stair of a subway station is limited and the lifting and the transportation are difficult.

Background

The prefabricated structure is developed more mature in the fields of road bridges, house buildings and the like, but due to the reasons of engineering geology, industrial scale technical level and the like, the prefabricated structure is not applied to subway stations in many cases. In order to meet the development strategy and direction of the country, aiming at various problems encountered in the current subway construction in the peak stage and the subway station construction in China, the prefabricated assembled structure has the advantages of effectively shortening the construction period, reducing the investment of constructors, reducing the occupation of construction sites, improving the construction quality, improving the construction efficiency, shortening the influence on urban ground traffic, being green, energy-saving, environment-friendly and the like, and the application demand in the subway engineering is increasingly promoted.

The stair is as a structural component of building field universal use, all has many places to set up in every subway station, and the demand is huge. Subway stairs usually carry out secondary construction after the construction of the whole frame structure of the subway station is finished, and the construction of the inside stairs is difficult because the internal space of the station is limited and a plurality of major are often constructed simultaneously. Therefore, the subway station has an increasingly urgent need for prefabricated assembled stairways. Although the research on the prefabricated stairway in civil buildings is mature and has corresponding standards and drawing sets, the stairway is almost a plate type stairway and a whole block, and the stairway is too large in blocks, too heavy in single blocks and difficult to hoist and install for subway engineering.

The traditional scheme of the prefabricated assembled beam type stair has the idea that prefabricated beams and step boards are adopted, the step boards are buckled on a stair beam with saw teeth in a L mode, and the internal corners of the step boards are the external corners of the saw teeth of the stair beam.

Therefore, the design of the prefabricated beam type stair with the novel tread plate structure is necessary to solve the problems of safety and practicability of the prefabricated beam type stair.

SUMMARY OF THE PATENT FOR INVENTION

The invention aims to solve the technical problem of providing a novel tread plate structure of a prefabricated assembled beam type stair, which can be better suitable for space limited projects such as subway stations and the like on the premise of ensuring safety and reliability, and has better universality and convenience.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the invention discloses a prefabricated assembled beam type stair with a novel tread structure, which comprises a prefabricated and molded stair column component, stair beam components, tread board components, platform board components and railing components, wherein the stair beam components on two sides are erected and fixed on the stair column components, and the tread board components and the platform board components are installed and fixed on a zigzag installation platform at the upper part of the stair beam components, and the prefabricated assembled beam type stair is characterized in that: the ladder column component is a prefabricated molding component, and the lower end of the ladder column component is fixedly connected with the structural bottom plate through a connecting component; the step plate component is provided with a step plate, an upturned rib plate and a lower hanging rib plate which are positioned at the rear end of the step plate component, the cross section of the step plate component is in a reverse T shape, the longitudinal two ends of the step plate are respectively supported on the sawtooth-shaped mounting platforms of the stair beam component at the same side, the upturned rib plate is abutted against the vertical wall between the adjacent sawtooth-shaped mounting platforms, and the longitudinal two ends of the lower hanging rib plate are respectively abutted against the inner side wall of the stair beam component at the same side; the lower end of the railing component penetrates through the upper mounting hole, is inserted into the lower mounting hole and is fixedly connected with the lower mounting hole.

The invention has the advantages that the beam type stair structure is more reasonably designed into blocks and is split into a plurality of components with light weight and small volume, thereby being convenient for production, transportation and installation; the step plate is made into a size with stronger universality by combining the actual conditions of space-limited projects such as subways and the like, and can be applied to various types of stair structures at different positions; the connection mode mainly adopts mortise, buckle and bolt connection, which is convenient and reliable, and the construction efficiency is obviously improved; the stair construction period can be effectively shortened, the problems of limited construction space, difficult material feeding and discharging and the like are solved, a large amount of template engineering and labor investment can be saved, and the stair construction period has good economic benefits and popularization prospects.

Drawings

The specification includes the following eight drawings:

FIG. 1 is a plan view of a prefabricated assembled beam type staircase with a novel tread structure of the invention;

FIG. 2 is an elevation view of a prefabricated assembled beam stair with a novel tread structure of the invention;

FIG. 3 is a perspective view of a pillar member of a prefabricated assembled beam stair with a novel tread structure according to the present invention;

FIG. 4 is a schematic view of the connection between the pillar member and the structural bottom plate of the stair with a novel tread structure;

FIG. 5 is a perspective view of a stair beam member of the prefabricated assembly beam type stair of the novel tread structure of the present invention;

FIG. 6 is a schematic view of the connection mode of the stair beam member, the tread member and the balustrade member in the prefabricated assembly beam type stair with the novel tread structure of the present invention;

FIG. 7 is a perspective view of a tread plate member of the prefabricated assembled beam type staircase of the new tread plate structure of the present invention;

FIG. 8 is a schematic view of the assembly of the tread components of the prefabricated assembled beam type staircase according to the novel tread structure of the present invention;

the figures show the components and corresponding references: the structure comprises ladder column components 10, upright columns 11, cross beams 12, mortises 13, grouting sleeves 14, embedded steel bars 15, connecting bolts 16, ladder beam components 20, a zigzag mounting platform 21, positioning tenons 22, lower mounting holes 23, step plate components 30, pedals 31, upturned rib plates 32, lower hanging rib plates 33, upper mounting holes 34, platform plate components 40, railing components 50, a structural bottom plate D and a lower hanging rib plate height H.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the prefabricated assembled beam type staircase with a novel tread structure comprises prefabricated and molded stair column members 10, stair beam members 20, tread members 30, platform plate members 40 and railing members 50, wherein the stair beam members 20 on two sides are erected and fixed on the stair column members 10, and the tread members 30 and the platform plate members 40 are installed and fixed on sawtooth-shaped installation platforms 21 on the upper parts of the stair beam members 20. The lower end of the ladder column component 10 is fixedly connected with the structural bottom plate D through the connecting component, so that full prefabrication and assembly of the beam type stairway are achieved, and construction is convenient and rapid.

Referring to fig. 7 and 8, the tread plate member 30 has a tread 31, and an upturned rib plate 32 and a lower suspended rib plate 33 located at the rear end thereof, and the cross section thereof is in a lying down T shape, both longitudinal ends of the tread 31 are respectively supported on the serrated mounting platforms 21 of the stair beam members 20 on the same side, the upturned rib plate 32 abuts against the vertical wall between the adjacent serrated mounting platforms 21, and both longitudinal ends of the lower suspended rib plate 33 abut against the inner side walls of the stair beam members 20 on the same side. The novel tread structure can better exert the structural strength and rigidity of the tread component 30, and can bear larger force and generate smaller deformation by using less materials. The rigidity of the tread plate member 30 is changed by adjusting the height H of the lower hanging rib plate, and the requirements of deflection and deformation of the tread plate member 30 under different span working conditions are met. Because of the existence of the upturning rib plate 32 and the lower hanging rib plate 33, the lower layer tread plate component 30 can provide a very strong support function for the upper layer tread plate component 30, so that the tread plate component 30 forms a one-way plate taking a short side as a main stress direction, and further the bearing capacity of the tread plate component 30 is greatly improved, therefore, under the same condition, the tread plate can be made thinner, the material and the cost are saved, the weight is lighter, and the transportation and the installation are convenient.

Referring to fig. 5, 6 and 7, the upper mounting holes 34 and the lower mounting holes 23 are correspondingly formed on the longitudinal side plate surfaces of the pedals 31 and the zigzag mounting platform 21 of the stair railing member 20, the lower ends of the railing members 50 penetrate through the upper mounting holes 34 and are inserted into the lower mounting holes 23 and are fixedly connected with the lower mounting holes, and the step plate members 30 and the railing members 50 are conveniently and fixedly mounted on the stair railing member 20.

Referring to fig. 3 and 4, the ladder column member 10 is a door-shaped structure formed by a cross beam 12 and two side columns 11, a plurality of concave mortises 13 are arranged on the top surfaces of the two longitudinal sides of the cross beam 12, and connecting bolts 16 are embedded in the mortises 13. The bottom of the longitudinal ends of the ladder beam member 20 is provided with positioning tenons 22 corresponding to and fitting with the mortises 13, and the connecting bolt 16 penetrates into the positioning tenons 22 to fixedly mount the ladder beam member 20 on the ladder column member 10. Referring to fig. 2, a vertically extending grouting sleeve 14 is embedded at the lower end of the upright post 11, embedded steel bars 15 on the structural bottom plate D are inserted into the grouting sleeve 14, and cement mortar is poured and filled into the grouting sleeve 14 to fixedly mount the upright post 11 on the structural bottom plate D.

Referring to fig. 1 and 2, during construction, the ladder column member 10 is inserted into the embedded steel bars 15 on the structural bottom plate D through the grouting sleeves 14 of the column bases, after grouting reaches the designed strength, the positioning tenons 22 of the ladder beam members 20 are buckled into the mortises 13 on the cross beams 12, and are connected and fixed through the embedded connecting bolts 16. Then, the step plate members 30 are assembled one by one on the zigzag-shaped mounting platforms 21 of the stair girder members 20 and connected with the rail members 50. Finally, the landing plate members 40 are laid on the serrated mounting platforms 21 at the ends of the stair stringer members 20 and are also connected and secured by the rail members 50, i.e. assembled to form a complete stair structure.

The foregoing is illustrative of the principles of the prefabricated sectional beam stairway of the new tread configuration of the present invention and is not intended to limit the invention to the specific construction and applications shown and described, and accordingly all modifications and equivalents thereof which may be employed are intended to fall within the scope of the claims which follow.

Claims (3)

1. The utility model provides a beam type stair is assembled in prefabrication of novel tread structure, includes prefabricated fashioned ladder column component (10), stair beam component (20), step board component (30), landing slab component (40) and railing component (50), and both sides stair beam component (20) erect to be fixed on ladder column component (10), and step board component (30), landing slab component (40) installation are fixed on zigzag mounting platform (21) on stair beam component (20) upper portion, characterized by: the lower end of the ladder column component (10) is fixedly connected with the structural bottom plate (D) through a connecting component; the step plate component (30) is provided with a pedal (31), an upturned rib plate (32) and a lower hanging rib plate (33) which are positioned at the rear end of the pedal, the cross section of the step plate component is in a reverse T shape, the longitudinal two ends of the pedal (31) are respectively supported on the sawtooth-shaped mounting platforms (21) of the stair beam component (20) at the same side, the upturned rib plate (32) abuts against the vertical wall between the adjacent sawtooth-shaped mounting platforms (21), and the longitudinal two ends of the lower hanging rib plate (33) respectively abut against the inner side wall of the stair beam component (20) at the same side; the pedal (31) is provided with an upper mounting hole (34) and a lower mounting hole (23) on the longitudinal two side plate surfaces and the sawtooth-shaped mounting platform (21) of the stair beam component (20), and the lower end of the railing component (50) penetrates through the upper mounting hole (34) to be inserted into the lower mounting hole (23) and is fixedly connected with the upper mounting hole and the lower mounting hole.

2. The prefabricated assembled beam type stair with the novel tread plate structure as claimed in claim 1, which is characterized in that: the ladder column component (10) is of a door-shaped structure consisting of a cross beam (12) and upright columns (11) on two sides, concave mortises (13) are formed in the top surfaces of the two longitudinal sides of the cross beam (12), and connecting bolts (16) are embedded in the mortises (13); the bottom of the longitudinal two ends of the ladder beam component (20) is provided with positioning tenons (22) corresponding to and matched with the mortises (13), and connecting bolts (16) penetrate into the positioning tenons (22) to fixedly install the ladder beam component (20) on the ladder column component (10).

3. The prefabricated assembled beam type stair with the novel tread plate structure as claimed in claim 2, wherein: the lower end of the upright post (11) is embedded with a vertically extending grouting sleeve (14), embedded steel bars (15) on the structural bottom plate (D) are inserted into the grouting sleeve (14), and cement mortar is poured into the grouting sleeve (14) to fixedly install the upright post (11) on the structural bottom plate (D).

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