CN212224474U

CN212224474U - Prefabricated antidetonation stair structure of assembled

Info

Publication number: CN212224474U
Application number: CN202020659998.7U
Authority: CN
Inventors: 高轩; 李子丹; 于成江; 范泽驰
Original assignee: Tianjin Construction Engineering Co Ltd of China Construction Eighth Engineering Division Co Ltd
Current assignee: Tianjin Construction Engineering Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-12-25
Anticipated expiration: 2030-04-27

Abstract

The utility model provides a prefabricated antidetonation stair structure of assembled, include: the prefabricated bench comprises a prefabricated bench body, wherein the upper end and the lower end of the prefabricated bench body are respectively provided with a vertical limiting jack; the prefabricated stair section comprises two stair platform beams which are arranged in the same direction, wherein mounting grooves are oppositely formed in the two stair platform beams, and the upper ends and the lower ends of the prefabricated stair section bodies are accommodated in the mounting grooves of the two stair platform beams in a one-to-one correspondence manner; the limiting insertion ribs are arranged in the mounting grooves and correspond to the limiting insertion holes, the limiting insertion ribs are inserted into the limiting insertion holes, and a buffer gap is formed between each limiting insertion rib and each limiting insertion hole; and the anti-sticking interlayer is arranged between the lower end of the prefabricated bench body and the mounting groove. The utility model provides a poor and the loaded down with trivial details problem of site operation of traditional cast-in-place stair anti-seismic performance.

Description

Prefabricated antidetonation stair structure of assembled

Technical Field

The utility model relates to a construction technical field, concretely relates to prefabricated antidetonation stair structure of assembled.

Background

In the field of building construction, the stair of a building structure generally adopts a cast-in-place mode, and a stair rest platform plate, a stair platform beam and a stair step section are cast on the same construction site. The traditional cast-in-place stair is not satisfactory in terms of earthquake-resistant performance. Meanwhile, the construction of the concrete structure of the cast-in-place stair requires assembling and using a large number of frame bodies, battens and templates on the construction site, and also has a large number of complicated procedures such as reinforcing steel bar binding and formwork removal before and after the floor slab pouring is finished. More importantly, the concrete structure construction is wet operation, so that the environmental pollution is easily caused, and the popularization and the development of the prefabricated building are not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, an assembled prefabricated anti-seismic stair structure is provided so as to solve the problems of poor anti-seismic performance and complicated field construction of the traditional cast-in-place stair.

In order to realize above-mentioned purpose, provide a prefabricated antidetonation stair structure of assembled, include:

the prefabricated bench comprises a prefabricated bench body, wherein the upper end and the lower end of the prefabricated bench body are respectively provided with a vertical limiting jack;

the prefabricated stair section comprises two stair platform beams which are arranged in the same direction, wherein mounting grooves are oppositely formed in the two stair platform beams, and the upper ends and the lower ends of the prefabricated stair section bodies are accommodated in the mounting grooves of the two stair platform beams in a one-to-one correspondence manner;

the limiting insertion ribs are arranged in the mounting grooves and correspond to the limiting insertion holes, the limiting insertion ribs are inserted into the limiting insertion holes, and a buffer gap is formed between each limiting insertion rib and each limiting insertion hole; and

and the anti-sticking interlayer is arranged between the lower end of the prefabricated bench body and the mounting groove.

Further, the anti-sticking interlayer is an oil felt layer.

Furthermore, the top of the limiting insertion hole at the lower end of the prefabricated ladder section body is provided with an expanded hole penetrating through the prefabricated ladder section body, the upper end of the limiting insertion rib extends into the expanded hole, the upper end of the limiting insertion rib is connected with a locking piece, and the locking piece is abutted against the bottom of the expanded hole.

Furthermore, the limiting insertion holes in the upper end of the prefabricated bench body are filled with grouting materials, and the grouting materials are coated on the limiting insertion ribs.

Furthermore, a first buffer space is arranged between the end face of the lower end of the prefabricated ladder section body and the inner wall of the mounting groove, a first PE rod is embedded in the first buffer space, glue is filled in the first buffer space, and the glue is coated on the first PE rod.

Furthermore, a second buffer space is arranged between the end face of the upper end of the prefabricated ladder section body and the inner wall of the mounting groove, a second PE rod is embedded in the middle of the second buffer space, and polystyrene boards are filled on two opposite sides of the second PE rod.

The beneficial effects of the utility model reside in that, the utility model discloses a prefabricated antidetonation stair structure of assembled will prefabricate the bench body and adopt the prefabricated production of mill, pour the rest platform board and the stair platform roof beam of accomplishing with the job site and assemble, realize building element's assembled installation, reduce loaded down with trivial details processes such as scene template is assembled, reinforcement, concrete placement, form removal. Simultaneously, the upper and lower end of prefabricated bench body passes through the cooperation of spacing joint bar and spacing jack and makes prefabricated bench body be connected with the landing roof beam and form wholly, promotes the development of assembly type structure. In addition, antiseized interlayer is when the earthquake, avoids the bonding of the lower extreme of prefabricated bench body and platform roof beam, and under the effect of vibration power, the lower extreme of prefabricated bench body and platform roof beam and the comparatively easy formation swing joint of landing roof beam of below are in order to resist earthquake's vibrational force.

Drawings

Fig. 1 is the utility model discloses assembled prefabricated antidetonation stair structure's of embodiment structural schematic.

Fig. 2 is the utility model discloses the structural schematic of the connected node at the both ends of prefabricated bench body.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Fig. 1 is the utility model discloses the structure schematic diagram of prefabricated antidetonation stair structure of assembled, fig. 2 are the utility model discloses the structure schematic diagram of the connected node at the both ends of prefabricated bench body.

Referring to fig. 1 and 2, the utility model provides a prefabricated antidetonation stair structure of assembled, include: prefabricated bench body 1 and landing beam 2. A stair platform beam 2 is poured on a wall body of the building structure, and the stair platform beam 2 is connected with a cast-in-place rest platform plate. The two landing beams 2 are arranged in the same direction and are arranged one above the other. The opposite sides of the two landing beams 2 are each formed with a mounting groove.

In this embodiment, the cross-section of the landing beam is rectangular, and the mounting groove is provided at the top corner of the landing beam. The mounting groove is arranged along the length direction of the landing beam.

Prefabricated bench body 1 is the stair body, including being a plurality of steps of notch cuttype setting, and it is the prefabricated production of mill. Vertical limiting insertion holes 10 are respectively formed in the upper end and the lower end of the prefabricated bench body 1. The upper end and the lower end of the prefabricated bench body 1 are accommodated in the mounting grooves of the two landing beams 2 in a one-to-one correspondence manner.

And a limiting dowel bar 3 is arranged in the mounting groove of each landing beam. The position of the limit inserting rib 3 corresponds to the position of the limit inserting hole 10. The limiting insertion ribs 3 are inserted into the limiting insertion holes 10. And a buffer gap is arranged between the limiting insertion rib 3 and the limiting insertion hole 10.

The anti-sticking interlayer 4 is arranged between the lower end of the prefabricated bench body 1 and the mounting groove of the landing beam 2 below.

The utility model discloses a prefabricated antidetonation stair structure of assembled will prefabricate the bench body and adopt the prefabricated production of mill, pour the rest platform board and the stair platform roof beam of accomplishing with the job site and assemble, realize building element's assembled installation, reduce loaded down with trivial details processes such as on-the-spot template is assembled, reinforcement, concrete placement, form removal. Simultaneously, the upper and lower end of prefabricated bench body passes through the cooperation of spacing joint bar and spacing jack and makes prefabricated bench body be connected with the landing roof beam and form wholly, promotes the development of assembly type structure. In addition, antiseized interlayer is when the earthquake, avoids the bonding of the lower extreme of prefabricated bench body and platform roof beam, and under the effect of vibration power, the lower extreme of prefabricated bench body and platform roof beam and the comparatively easy formation swing joint of landing roof beam of below are in order to resist earthquake's vibrational force.

In this embodiment, the release barrier 4 is a layer of felt.

In a preferred embodiment, the top of the limiting insertion hole 10 at the lower end of the prefabricated bench body 1 is formed with an enlarged hole penetrating through the prefabricated bench body 1. The upper end of the limiting dowel bar 3 extends into the enlarged hole. The upper end of the limiting steel bar 3 is connected with a locking piece which is propped against the bottom of the enlarged hole.

As a better implementation mode, the top end of the limiting steel bar 3 is provided with an external thread, the locking piece is a fixed nut, and the locking piece is screwed on the top end of the limiting steel bar. The limiting insertion holes 10 in the upper end of the prefabricated bench body 1 are filled with grouting materials, and the grouting materials are coated on the limiting insertion ribs 3. The grouting material is C40 grade high-strength non-shrinkage grouting material.

In this embodiment, a first buffer space is provided between the end surface of the lower end of the prefabricated staircase section body 1 and the inner wall of the installation groove of the landing beam below. The first buffering space is embedded with a first PE rod (high density polyethylene). The first buffer space is filled with glue solution 5. The glue solution 5 is coated on the first PE rod.

And a second buffer space is arranged between the end surface of the upper end of the prefabricated bench body 1 and the inner wall of the mounting groove of the landing beam above the prefabricated bench body. The middle part of the second buffer space is embedded with a second PE rod. The opposite sides of the second PE rod are filled with polystyrene board 6.

In this embodiment, the landing beam and the rest platform slab are cast in place with concrete, and before casting, the landing beam is provided with the limiting dowel bars. The limiting inserted bar is L-shaped by bending a steel bar with the diameter of phi 20 mm. The lower end of the limiting insertion rib is embedded in the landing beam, the upper end of the limiting insertion rib extends to the upper side of the landing beam, and when the prefabricated bench body is installed subsequently, the limiting insertion hole is inserted into the prefabricated bench body. In this embodiment, the aperture of the spacing jack of prefabricated bench body is phi 50 mm. And a movable allowance is arranged between the limiting insertion hole and the limiting insertion rib. After the concrete of the stair platform beam reaches the design strength, an anti-sticking interlayer is laid at the bottom of the mounting groove of the stair platform beam, and then leveling is carried out. The prefabricated stair section body is hoisted to the upper side of the cast-in-place stair platform beam, so that the two ends of the prefabricated stair section body are placed in the installation grooves, the limiting insertion ribs of the stair platform beam are inserted into the limiting insertion holes at the two ends of the prefabricated stair section body, the limiting insertion holes at the lower end of the prefabricated stair section body are fixed with the limiting insertion ribs through locking pieces (fixing nuts), and the fixing nuts are contained in the expansion holes and abut against the bottoms of the expansion holes. The limiting insertion holes at the upper end of the prefabricated bench body are filled with C40-grade CGM grouting material, and the top of the prefabricated bench body is plugged with mortar. The CGM grouting material is prepared by taking a high-strength material as an aggregate, taking cement as a binding agent and assisting materials with high flow state, micro-expansion, segregation prevention and the like.

Then, fill first PE stick and pour into the glue solution in the first buffer space between the terminal surface of the lower extreme of prefabricated bench body and the inner wall of the mounting groove of landing roof beam. The PE rod is a high density polyethylene sheet.

And filling polystyrene boards in gaps on two sides of a second PE rod in a second buffer space between the upper end of the prefabricated stair section body and the inner wall of the mounting groove of the landing beam. And the top of the second buffer space is sealed by injecting glue, and the width of the seam is 30mm multiplied by 30mm so as to reduce the falling of the decoration layer at the position caused by the slippage of the bench or the deformation of the material.

It should be noted that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the present invention, which are intended to be limited only by the scope of the appended claims.

Claims

1. An assembled prefabricated earthquake-resistant stair structure, comprising:

the stair tread comprises a stair tread body, wherein the upper end and the lower end of the stair tread body are respectively provided with a vertical limiting jack;

the stair section comprises two stair platform beams which are arranged in the same direction, wherein mounting grooves are oppositely formed in the two stair platform beams, and the upper end and the lower end of the stair section body are accommodated in the mounting grooves of the two stair platform beams in a one-to-one correspondence manner;

and the anti-sticking interlayer is arranged between the lower end of the stair tread body and the mounting groove.

2. An assembled prefabricated earthquake-resistant staircase structure as defined in claim 1, characterised in that said anti-adhesive barrier is a layer of felt.

3. The prefabricated earthquake-resistant stair structure of claim 1, wherein an enlarged hole penetrating through the stair step body is formed at the top of the limiting insertion hole at the lower end of the stair step body, the upper end of the limiting insertion rib extends into the enlarged hole, and a locking piece is connected to the upper end of the limiting insertion rib and abuts against the bottom of the enlarged hole.

4. The fabricated prefabricated earthquake-resistant stair structure of claim 1, wherein the limiting insertion holes at the upper end of the stair tread body are filled with grouting material, and the grouting material is coated on the limiting insertion ribs.

5. The prefabricated earthquake-resistant stair structure of claim 1, wherein a first buffer space is arranged between the end surface of the lower end of the stair step body and the inner wall of the mounting groove, a first PE rod is embedded in the first buffer space, glue is filled in the first buffer space, and the first PE rod is coated with the glue.

6. The prefabricated earthquake-resistant stair structure of claim 5, wherein a second buffer space is arranged between the end surface of the upper end of the stair step body and the inner wall of the mounting groove, a second PE rod is embedded in the middle of the second buffer space, and polystyrene boards are filled on two opposite sides of the second PE rod.