CN213837417U

CN213837417U - Pin-connected panel precast concrete stair

Info

Publication number: CN213837417U
Application number: CN202020974626.3U
Authority: CN
Inventors: 符景豪; 李世钟; 李静; 陈志龙; 朱丹
Original assignee: Shenzhen Pengcheng Construction Group Co ltd; South China University of Technology SCUT
Current assignee: Shenzhen Pengcheng Construction Group Co ltd; South China University of Technology SCUT
Priority date: 2020-05-31
Filing date: 2020-05-31
Publication date: 2021-07-30
Anticipated expiration: 2030-05-31

Abstract

The utility model discloses an assembled precast concrete stair, including an upper ladder beam, a lower ladder beam, a bearing ladder beam and a plurality of assembling steps, both ends of the bearing ladder beam are respectively lapped on the upper ladder beam and the lower ladder beam, each step on the bearing ladder beam is provided with one assembling step, the upper ladder beam and the lower ladder beam are lapped on the bearing ladder beam, the bearing ladder beam is provided with embedded steel bars, the bearing ladder beam is provided with a pouring hole matched with the embedded steel bars, and filling materials are poured in the gap between the pouring hole and the embedded steel bars; the bearing bench beam and the gap area between the upper and lower stair beams are subjected to concrete pouring, so that the whole stair is better in integrity.

Description

Pin-connected panel precast concrete stair

Technical Field

The utility model belongs to the technical field of the building, concretely relates to pin-connected panel precast concrete stair.

Background

With the increasing importance degree of the assembly type building in China, the assembly type building in China enters a stage of high-speed development. As a connecting member in the prefabricated building, the prefabricated staircase is a considerable part in the process of pushing the prefabricated building to develop. The traditional integral prefabricated staircase is characterized in that all components of the whole staircase including steps and a staircase section plate are prefabricated and molded in a factory and then transported to a construction site for hoisting. The standardized modular design method and research of the prefabricated staircase [ J ] in the construction machinery, 2019(12): 65-67.) of the established project generalize the data of the prefabricated staircase, summarizes the prefabricated staircase standard library, finds that the staircase repetition rate of most projects is low, and the staircase between all the projects has almost no universal size, so that the mould needs to be redesigned almost in each project. And the integrally prefabricated staircase is heavy in weight and large in size, and is a relatively troublesome thing for loading, transportation, field stacking management and field hoisting. The integral prefabricated staircase is separated into parts with small sizes for transportation and assembly, the problems of transportation trouble and field stacking trouble can be solved, the cost of opening the mould can be reduced, and the integral prefabricated staircase has important significance for reducing the hoisting difficulty. In the aspect of earthquake fortification, the self weight is reduced, earthquake input can be reduced, the rigidity contribution of the stairs to the main structure can be reduced by multi-part assembling, and the earthquake fortification is favorably reduced.

SUMMERY OF THE UTILITY MODEL

To whole prefabricated staircase from great, bulky problem, the utility model provides an assembled precast concrete stair, this kind of stair can be disassembled into the less part of size with traditional whole prefabricated staircase and transport and assemble on the spot, have solved whole prefabricated staircase from great, bulky and transportation difficulty, the scene that leads to place the trouble, hoist and mount difficulty scheduling problem, have reduced the contribution of stair rigidity simultaneously, reduce the earthquake reaction, do benefit to the antidetonation. The stair form can solve the problems of great weight and large volume to a great extent, and is more convenient to transport, stack and hoist.

The utility model discloses at least, one of following technical scheme realizes.

An assembled precast concrete stair comprises an upper stair beam, a lower stair beam, a bearing stair section beam and a plurality of assembling steps, wherein two ends of the bearing stair section beam are respectively lapped on the upper stair beam and the lower stair beam, each step on the bearing stair section beam is provided with one assembling step, first embedded steel bars are arranged on the upper stair beam and the lower stair beam at the position where the bearing stair section beam is lapped, the bearing stair section beam is provided with a pouring hole matched with the first embedded steel bars, and filling materials are poured in a gap where the pouring hole is matched with the first embedded steel bars; and concrete pouring is carried out in the gap area between the bearing bench beam and the upper and lower bench beams.

Further, each ladder on the bearing bench beam is equipped with the pre-buried reinforcing bar of second, every is assembled to mark time and is equipped with the preformed hole with the pre-buried reinforcing bar complex of second, pour filling material in preformed hole and the pre-buried reinforcing bar complex clearance of second.

Further, the bearing bench beam comprises a first bearing bench beam and a second bearing bench beam, one end of the first bearing bench beam and one end of the second bearing bench beam are respectively lapped on the upper bench beam, and the other end of the first bearing bench beam and the other end of the second bearing bench beam are respectively lapped on the lower bench beam.

Furthermore, each ladder of the first bearing ladder section beam and the second bearing ladder section beam is provided with a second embedded steel bar.

Furthermore, every is assembled and is marked time and be equipped with two preformed holes, two preformed holes respectively with first bearing bench roof beam and the second embedded bar clearance fit on the second bearing bench roof beam, pour filler material in the clearance.

Further, a gap area between the first bearing bench beam and the upper and lower bench beams is poured by concrete; and pouring concrete into a gap area between the second bearing bench beam and the upper and lower bench beams.

Further, the filling material is concrete.

Furthermore, the assembled steps and the bearing bench beams are separated from each other, and are assembled on the construction site.

The utility model discloses can disassemble traditional whole prefabricated staircase into different small-size parts and transport and assemble on the spot, solve whole prefabricated staircase and place the trouble from transportation difficulty, the scene that great, bulky and lead to, hoist and mount difficulty scheduling problem, can save raw and other materials reduce cost simultaneously, accord with the theory of green building. The use of the assembly step and the separation of the load-bearing bench beam instead of the integral prefabricated staircase can reduce the rigidity contribution of the staircase to the overall structure, and the earthquake reaction under the earthquake action is smaller than that of the integral prefabricated staircase, so that the absorbed earthquake energy is less, and the possibility of damage under the earthquake action is less.

Compared with the prior art, the utility model discloses following beneficial effect has:

the defects of large self-weight and large volume of the whole stair are overcome by separating the steps from the bearing stair section beams and separating the stair section beams, and the stair is more convenient to transport, stack and hoist.

Drawings

FIG. 1 is a structural view of an upper ladder beam of the present embodiment;

FIG. 2 is a structural view of the lower ladder beam of the present embodiment;

fig. 3 is a structural view of the load-bearing bench beam of the present embodiment;

FIG. 4 is a structural diagram of the assembly step of the present embodiment;

fig. 5 is a schematic view of the assembled precast concrete stair of the embodiment;

FIG. 6 is a schematic diagram illustrating the assembly of the components of the present embodiment;

in the figure: 1-going up a ladder beam, 2-first embedded steel bars, 3-bearing ladder section beams, 4-preformed holes and 5-assembling steps,

6-descending ladder beams, 7-filling materials, 8-gap areas, 9-pouring holes and 10-second embedded steel bars.

Detailed Description

The purpose of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.

As shown in fig. 5, the assembled precast concrete stairway comprises an upper stair beam 1, a lower stair beam 6, a bearing stair beam 3 and a plurality of assembled steps 5, wherein two ends of the bearing stair beam 3 are respectively lapped on the upper stair beam and the lower stair beam, and a gap area 8 between the bearing stair beam 3 and the upper stair beam 1 and between the bearing stair beam and the lower stair beam 6 is poured by concrete.

As shown in fig. 1, 2 and 3, first embedded steel bars 2 are arranged on the upper ladder beam 1 and the lower ladder beam 6 at positions overlapping the bearing ladder beam 3, pouring holes 9 matched with the first embedded steel bars 2 are correspondingly arranged at positions overlapping the upper ladder beam 1 and the lower ladder beam 6 on the bearing ladder beam 3, and filling materials 7 are poured in gaps between the pouring holes 9 and the first embedded steel bars 2;

the bearing bench beam 3 comprises a first bearing bench beam and a second bearing bench beam, one end of the first bearing bench beam and one end of the second bearing bench beam are respectively lapped on the upper bench beam 1, and the other end of the first bearing bench beam and the other end of the second bearing bench beam are respectively lapped on the lower bench beam 6; and each ladder of the first bearing ladder section beam and the second bearing ladder section beam is provided with a second embedded steel bar 10.

As shown in fig. 4, each assembly step 5 is provided with two symmetrical preformed holes 4, the two symmetrical preformed holes 4 are respectively in clearance fit with second embedded steel bars 10 on the first bearing bench beam and the second bearing bench beam, and filling materials 7 are poured in the clearance;

each ladder on the bearing bench beam 3 sets up one and assembles 5 of marking time, and bearing bench beam 3 and assemble the completion back of putting up of 5 of marking time carry out concrete placement to the space region 8 in the beam 1 of going up the ladder, the beam 6 of going down the ladder for the wholeness of whole prefabricated staircase is better. The filling material 7 is concrete.

As shown in fig. 6, the construction process includes firstly completing the hoisting or pouring of the upper ladder beam 1 and the lower ladder beam 6, overlapping the pouring holes 9 on the first bearing ladder beam and the second bearing ladder beam on the first embedded steel bars 2 of the upper ladder beam 1 and the lower ladder beam 6 respectively, and then pouring concrete for fixing; after the first bearing bench beam and the second bearing bench beam are lapped, respectively lapping the preformed holes 4 of the assembling steps 5 on the second embedded steel bars 10 of the first bearing bench beam and the second bearing bench beam, and pouring concrete for fixing; and then pouring concrete into a gap area 8 between the upper ladder beam 1 and the lower ladder beam 6 and between the first bearing ladder section beam and the second bearing ladder section beam.

The utility model discloses a prefabricated stair of pin-connected panel structure form has divided into bearing bench roof beam and a plurality of pin-connected panel with whole prefabricated stair and has marked time, has reduced the difficulty of transportation, on-the-spot stacking and hoist and mount greatly, and the effect of bench board has been replaced to the bearing bench roof beam simultaneously, has both reduced the use of raw and other materials, accords with the theory of green building, can reduce stair again to overall structure's rigidity contribution, reduces seismic response, does benefit to the antidetonation, has certain engineering meaning to the development that promotes the assembly type building.

The above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a pin-connected panel precast concrete stair, includes ladder roof beam (1), lower ladder roof beam (6), bearing bench roof beam (3) and a plurality of assembling and mark time (5), the overlap joint is respectively gone up ladder roof beam (1) and lower ladder roof beam (6) in bearing bench roof beam (3) both ends, and each ladder on bearing bench roof beam (3) sets up one and assembles and mark time (5), its characterized in that: first embedded steel bars (2) are arranged on the upper ladder beam (1) and the lower ladder beam (6) in a position where the bearing ladder section beam (3) is in lap joint with the upper ladder beam, a pouring hole (9) matched with the first embedded steel bars (2) is formed in the bearing ladder section beam (3), and filling materials (7) are poured in a gap where the pouring hole (9) is matched with the first embedded steel bars (2); concrete pouring is carried out on a gap area (8) between the bearing bench beam (3) and the upper bench beam (1) and between the bearing bench beam and the lower bench beam (6);

the bearing bench beam (3) comprises a first bearing bench beam and a second bearing bench beam, one end of the first bearing bench beam and one end of the second bearing bench beam are respectively lapped on the upper bench beam (1), and the other end of the first bearing bench beam and the other end of the second bearing bench beam are respectively lapped on the lower bench beam (6); every is assembled and is marked time (5) and be equipped with two preformed holes (4), two preformed holes (4) respectively with first bearing bench roof beam and second bearing bench roof beam on second embedded bar (10) clearance fit, pour in the clearance filler material (7).

2. The assembled precast concrete stair is characterized in that each step on the bearing stair section beam (3) is provided with a second embedded steel bar (10), each assembled step (5) is provided with a preformed hole (4) matched with the second embedded steel bar (10), and a filling material (7) is poured in a gap between the preformed hole (4) and the second embedded steel bar (10).

3. The assembled precast concrete stair of claim 2, wherein each step of the first and second load-bearing bench girders is provided with second embedded steel bars (10).

4. The assembled precast concrete stair as claimed in claim 3, wherein the gap area between the first load-bearing bench beam and the upper and lower bench beams (1, 6) is concreted; and the gap area between the second bearing bench beam and the upper bench beam (1) and between the second bearing bench beam and the lower bench beam (6) is poured by concrete.

5. The fabricated precast concrete stair of any one of claims 1 to 4, wherein the filling material (7) is concrete.