阅读说明：本技术 一种装配式混凝土旋转楼梯及其施工方法 (Assembled concrete spiral stair and construction method thereof ) 是由 唐宇轩 李水生 周泉 于 2020-08-26 设计创作，主要内容包括：本发明公开了一种装配式混凝土旋转楼梯及其施工方法,装配式混凝土旋转楼梯包括：休息平台、旋转楼梯灌注中轴柱结构和多个楼梯踏步结构,旋转楼梯灌注中轴柱结构包括中轴柱钢筋笼,楼梯踏步结构的端部具有搭接结构,多个楼梯踏步结构通过各自的搭接结构一阶一阶地向上搭接并且一阶一阶沿水平圆周方向顺次错开,多个楼梯踏步结构形成多段踏步结构层,休息平台、中轴柱钢筋笼和楼梯踏步结构均为标准化模数化预制件,休息平台和楼梯踏步结构为高性能混凝土结构。该装配式混凝土旋转楼梯旨在解决现有技术中采用钢筋混凝土制作的旋转楼梯导致楼梯整体质量较大、传统工艺制作过程工序较为繁杂的技术问题。(The invention discloses an assembled concrete spiral stair and a construction method thereof, wherein the assembled concrete spiral stair comprises the following components: rest platform, rotatory stair fill well jack-post structure and a plurality of stair structure of marking time, rotatory stair fills the jack-post structure and includes well jack-post steel reinforcement cage, the tip of stair structure of marking time has the overlap joint structure, a plurality of stair structure of marking time make progress the overlap joint and stagger in order along horizontal circumferencial direction one-step through respective overlap joint structure one-step, a plurality of stair structure of marking time form the multistage structure layer of marking time, rest platform, jack-post steel reinforcement cage and stair structure of marking time are standardized modular prefab, rest platform and stair structure of marking time are high performance concrete structure. The assembled concrete spiral stair aims to solve the technical problems that the whole mass of the stair is large and the procedures of the traditional process manufacturing process are complicated due to the adoption of the spiral stair made of reinforced concrete in the prior art.)

1. An assembled concrete spiral stair, characterized in that, assembled concrete spiral stair includes: the utility model provides a landing stage, rotatory stair fill well jack-post structure and a plurality of stair structure of marking time, rotatory stair fill well jack-post structure includes well jack-post steel reinforcement cage, the tip of stair structure of marking time has the overlap joint structure, and a plurality of stairs structure of marking time make up the overlap joint and stagger in order along horizontal circumferencial direction one-step through respective overlap joint structure one-step, and a plurality of stairs structure formation multistage structural layer of marking time, and the top of each section structural layer of marking time sets up landing stage, the landing stage overlap joint is on the overlap joint structure of this landing stage corresponding below stair structure of marking time, landing stage, jack-post steel reinforcement cage and stair structure of marking time are standardized modulization prefab, landing stage and stair structure of marking time are high performance concrete structure.

2. The fabricated concrete spiral staircase of claim 1, wherein the width of the end of the stair step structure near the overlapping structure is narrower than the end of the stair step structure away from the overlapping structure, and the thickness of the end of the stair step structure near the overlapping structure is thicker than the end of the stair step structure away from the overlapping structure.

3. The fabricated concrete spiral stair as claimed in claim 2, wherein the 2 stair step structures adjacent up and down are further connected through a stair railing, a threaded rod is formed at the lower end of the stair railing, and the threaded rod sequentially passes through reserved connecting holes on the 2 stair step structures adjacent up and down and is fastened through a bolt.

4. The fabricated concrete spiral stair of claim 3, wherein the overlapping structure of the end of the stair step structure is a two-stage overlapping step structure with an inner through hole, and comprises an upper-stage circular ring step and a lower-stage circular ring step, wherein the diameter of the lower-stage circular ring step is larger than that of the upper-stage circular ring step, so that the inner through hole of the lower-stage circular ring step of the upper stair step structure is sleeved on the upper-stage circular ring step of the lower stair step structure.

5. The fabricated concrete spiral staircase of claim 4, wherein the ends of the rest platform have a two-step overlapping step structure identical to a stair step structure.

6. The fabricated concrete spiral staircase of claim 5, wherein the high-performance concrete structure is made of high-performance concrete comprising at least one of the following: UHPC, HPC, RPC, polyphenyl fiber concrete.

7. The fabricated concrete spiral stair of claim 6, wherein the stair tread structure comprises a tread connected to the bridge structure, an edge of a bottom surface of the tread forming a rib.

8. The fabricated concrete spiral stair of claim 7, wherein the fabricated concrete spiral stair comprises a central pillar base, the central pillar base is connected with stair central pillar connecting steel bars extending outwards from bottom to top, and the central pillar reinforcement cage is connected with the stair central pillar connecting steel bars.

9. Assembled concrete spiral stair of any one of claims 1 to 8, characterized in that the central column reinforcement cage comprises a plurality of circular hoops and a plurality of vertical reinforcements connected to each circular hoop, which are sequentially arranged at intervals in the vertical direction.

10. A construction method of the fabricated concrete spiral staircase according to claim 8, characterized in that the construction method comprises the steps of:

a. installing a middle shaft column base at the position of the stair to be installed, arranging middle shaft column connecting steel bars extending outwards from bottom to top at the middle shaft column base, and simultaneously positioning and installing initial stair step structures of a plurality of steps;

b. connecting the middle shaft column reinforcement cage with the connecting reinforcement of the middle shaft column of the stair, and then completing the hoisting and positioning of a plurality of stair step structures of the current construction section;

c. carrying out high-strength concrete pouring construction of a middle shaft column reinforcement cage on the construction section of the assembled stair step structure, and reserving the middle shaft column reinforcement cage with the height of at least two steps of stair step structures;

d. repeating the steps of hoisting the stair step structure, assembling and connecting the central column reinforcement cage and pouring high-strength concrete into the central column reinforcement cage to complete the construction of the first step structure layer;

e. positioning and hoisting the rest platform above the first step structure layer, supporting and fixing the rest platform, and simultaneously performing high-strength concrete pouring construction on the central axis column reinforcement cage to keep the central axis column reinforcement cage with the height of the two-step stair step structure;

f. repeating the steps of lifting the stair step structure, assembling and connecting the central shaft column reinforcement cage and pouring high-strength concrete into the central shaft column reinforcement cage, and completing the construction of the main structure part of the stair;

g. and (4) mounting the stair railing on each step of stair step structure.

Technical Field

The invention relates to the technical field of fabricated concrete stairs, in particular to a fabricated concrete spiral stair and a construction method thereof.

Background

The spiral stair has beautiful, graceful and elegant streamline and relatively saved space, and is commonly used in office buildings with few floor numbers, public space shapes, residential buildings or used as small building products to be arranged in courtyards or rooms. The spiral staircase is usually made of wood, steel, toughened glass, reinforced concrete and other materials. The spiral stair is made of wood, steel and toughened glass, the whole stair is light in weight and convenient and simple to manufacture, but the stair is easy to shake up and down when walking on the step plate; the spiral stair made of reinforced concrete has the advantages of large integral mass and complex manufacturing procedures in the traditional process.

Disclosure of Invention

Technical problem to be solved

Based on the technical scheme, the invention provides an assembly type concrete spiral stair, and aims to solve the technical problems that the whole stair is high in mass and the traditional process manufacturing procedures are complicated due to the fact that the spiral stair made of reinforced concrete in the prior art.

(II) technical scheme

In order to solve the technical problem, the invention provides an assembled concrete spiral stair, wherein the assembled concrete spiral stair comprises: the utility model provides a landing stage, rotatory stair fill well jack-post structure and a plurality of stair structure of marking time, rotatory stair fill well jack-post structure includes well jack-post steel reinforcement cage, the tip of stair structure of marking time has the overlap joint structure, and a plurality of stairs structure of marking time make up the overlap joint and stagger in order along horizontal circumferencial direction one-step through respective overlap joint structure one-step, and a plurality of stairs structure formation multistage structural layer of marking time, and the top of each section structural layer of marking time sets up landing stage, the landing stage overlap joint is on the overlap joint structure of this landing stage corresponding below stair structure of marking time, landing stage, jack-post steel reinforcement cage and stair structure of marking time are standardized modulization prefab, landing stage and stair structure of marking time are high performance concrete structure.

Preferably, the width of the end of the stair step structure close to the lap joint structure is narrower than the end of the stair step structure far away from the lap joint structure, and the thickness of the end of the stair step structure close to the lap joint structure is thicker than the end of the stair step structure far away from the lap joint structure.

Preferably, 2 stair structures of marking time adjacent from top to bottom still pass through the stair railing and connect, the upper end of stair railing forms L type handrail, and the lower extreme forms the threaded rod, the threaded rod passes the structural reservation connecting hole of marking time of 2 stairs adjacent from top to bottom in proper order to pass through the bolt-up.

Preferably, the lap joint structure of the tip of stair structure of marking time is the two-stage lap joint stair structure that has interior through-hole, including higher level's ring step, the ring step of subordinate, and wherein the diameter of ring step of subordinate is greater than the diameter of higher level's ring step to make the interior through-hole cover of the ring step of subordinate of the stair structure of marking time that is located above locate on the ring step of higher level of stair structure of marking time below.

Preferably, the ends of the rest platform have a two-step lap-jointed step structure identical to a stair step structure.

Preferably, the high-performance concrete structure adopts high-performance concrete at least comprising any one of the following materials: UHPC, HPC, RPC, polyphenyl fiber concrete.

Preferably, the stair tread structure comprises a tread plate connected to the bridging structure, the edges of the underside of the tread plate forming a rib.

Preferably, the fabricated concrete spiral stair comprises a central shaft column base, the central shaft column base is connected with stair central shaft column connecting steel bars extending outwards from bottom to top, and the central shaft column steel bar cage is connected with the stair central shaft column connecting steel bars.

Preferably, well jack-post steel reinforcement cage includes a plurality of ring stirrups that follow vertical direction interval set up in proper order and connects in a plurality of vertical reinforcing bars of each ring stirrup.

In addition, the invention provides a construction method of the fabricated concrete spiral stair, wherein the construction method comprises the following steps:

a. installing a middle shaft column base at the position of the stair to be installed, arranging middle shaft column connecting steel bars extending outwards from bottom to top at the middle shaft column base, and simultaneously positioning and installing initial stair step structures of a plurality of steps;

b. connecting the middle shaft column reinforcement cage with the connecting reinforcement of the middle shaft column of the stair, and then completing the hoisting and positioning of a plurality of stair step structures of the current construction section;

c. carrying out high-strength concrete pouring construction of a middle shaft column reinforcement cage on the construction section of the assembled stair step structure, and reserving the middle shaft column reinforcement cage with the height of at least two steps of stair step structures;

d. repeating the steps of hoisting the stair step structure, assembling and connecting the central column reinforcement cage and pouring high-strength concrete into the central column reinforcement cage to complete the construction of the first step structure layer;

e. positioning and hoisting the rest platform above the first step structure layer, supporting and fixing the rest platform, and simultaneously performing high-strength concrete pouring construction on the central axis column reinforcement cage to keep the central axis column reinforcement cage with the height of the two-step stair step structure;

f. repeating the steps of lifting the stair step structure, assembling and connecting the central shaft column reinforcement cage and pouring high-strength concrete into the central shaft column reinforcement cage, and completing the construction of the main structure part of the stair;

g. and (4) mounting the stair railing on each step of stair step structure.

(III) advantageous effects

Compared with the prior art, the assembled concrete spiral stair has the beneficial effects that:

the rest platform, the middle shaft column reinforcement cage and the stair step structure are standardized modular prefabricated parts, so that rapid construction can be conveniently carried out in a field assembly mode; meanwhile, the prefabricated parts are made of high-performance concrete, so that the material reduction amount of the staircase can reach 40-70%, and the spiral staircase has the characteristics of attractive appearance, light structure, high standardization, rapidness in assembly, no-pouring templates, self-engagement of the prefabricated parts and the like, and can reduce the material reduction amount by 40-70% and shorten the construction period by more than 30% under the condition of realizing the same functional requirement of a cast-in-place staircase.

Drawings

The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:

fig. 1 is a partial schematic view of a fabricated concrete spiral staircase according to an embodiment of the present invention;

FIG. 2 is another schematic view of a portion of a fabricated concrete spiral stair according to an embodiment of the present invention;

FIG. 3 is an assembly schematic of a stair railing according to an embodiment of the present invention;

FIG. 4 is a perspective view of one perspective of the stair step structure according to the embodiment of the invention;

FIG. 5 is a perspective view of another perspective of the stair step structure according to the embodiment of the invention;

fig. 6 is a schematic structural view corresponding to step a of the construction method of the fabricated concrete spiral staircase according to the embodiment of the present invention;

fig. 7 is a schematic structural view corresponding to step b of the construction method of the fabricated concrete spiral staircase according to the embodiment of the present invention;

fig. 8 is a schematic structural view corresponding to step c of the construction method of the fabricated concrete spiral staircase according to the embodiment of the present invention;

fig. 9 is a schematic structural view corresponding to step d of the construction method of the fabricated concrete spiral staircase according to the embodiment of the present invention;

fig. 10 is a schematic structural view corresponding to step e of the construction method of the fabricated concrete spiral staircase according to the embodiment of the present invention;

fig. 11 is a schematic structural view corresponding to step f of the construction method of the fabricated concrete spiral staircase according to the embodiment of the present invention;

fig. 12 is a general schematic view of the fabricated concrete spiral staircase according to the embodiment of the present invention.

Description of reference numerals:

1. the stair comprises a rest platform, 2, a center shaft column base, 3, a stair railing, 4, stair center shaft column connecting steel bars, 100, a rotary stair perfusion center shaft column structure, 101, a center shaft column steel bar cage, 102, a circular ring stirrup, 103, vertical steel bars, 200, a stair step structure, 201, a lap joint structure, 202, pedals, 203, a rib beam, 204, reserved connecting holes, 205, a superior circular ring step, 206 and an inferior circular ring step.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Referring to fig. 1, 2 and 12, the present invention provides a fabricated concrete spiral stair, including: rest platform 1, rotatory stair fill well shaft column structure 100 and a plurality of stair structure 200 of marking time, rotatory stair fills well shaft column structure 100 and includes well shaft column steel reinforcement cage 101, the tip of stair structure 200 of marking time has overlap joint structure 201, a plurality of stair structure 200 of marking time make up the overlap joint and stagger in order along horizontal circumferencial direction one-step through respective overlap joint structure 201 one-step, a plurality of stair structure 200 of marking time form the multistage structure layer of marking time, the top of each stage structure layer of marking time sets up rest platform 1, rest platform 1 overlap joint is on the overlap joint structure 201 of this rest platform 1 stair structure 200 of corresponding below, rest platform 1, well shaft column steel reinforcement cage 101 and stair structure 200 of marking time are standardized modulization, rest platform 1 and stair structure 200 of marking time are high performance concrete structure.

According to the preferred embodiment of the present invention, the width of the end of the stair step structure 200 close to the overlapping structure 201 is narrower than the width of the end of the stair step structure 200 away from the overlapping structure 201, the thickness of the end of the stair step structure 200 close to the overlapping structure 201 is thicker than the thickness of the end of the stair step structure 200 away from the overlapping structure 201, the stair step structure 200 comprises a tread 202 connected with the overlapping structure 201, the edge of the bottom surface of the tread 202 forms a rib beam 203, i.e. the tread 202 is shaped in such a way that the side close to the root of the overlapping structure 201 is used as the main stressed part of the step, and adopts a narrow and thick form, so that the tread has good rigidity and bearing capacity for resisting bending moment, and the rib beam 203 can also play; the end of the tread 202 away from the overlapping structure 201 is in a wide and thin form, so that the tread 202 is adapted to the rotation radian of the spiral stair, the tread width meeting the requirement is provided, and meanwhile, the weight of the component can be effectively reduced.

Referring to fig. 3, according to an embodiment of the present invention, the 2 stair step structures 200 adjacent up and down are further connected by a stair railing 3, an L-shaped handrail is formed at the upper end of the stair railing 3 (in a preferred embodiment, not limiting to the present invention), and a threaded rod is formed at the lower end, and the threaded rod sequentially passes through the reserved connection holes 204 on the 2 stair step structures 200 adjacent up and down and is fastened by a bolt. The threaded rods on the lower portion of the balustrade serve as the outer attachment for the tread 202 to enhance the overall stability between the prefabricated components.

In addition, referring to fig. 4 and 5, the overlapping structure 201 at the end of the stair step structure 200 is a two-step overlapping step structure with an inner through hole, and includes an upper-level circular ring step 205 and a lower-level circular ring step 206, wherein the diameter of the lower-level circular ring step 206 is larger than that of the upper-level circular ring step 205, so that the inner through hole of the lower-level circular ring step 206 of the upper stair step structure 200 is sleeved on the upper-level circular ring step 205 of the lower stair step structure 200. Of course, the invention is not limited thereto, and other suitable structures designed for the overlapping structure 201 will also fall within the scope of the invention.

In addition, the ends of the rest platform 1 may also have a two-step lap step structure and a rib 203 structure, etc. similar to the stair step structure 200, and a description thereof will not be repeated.

According to the embodiment of the invention, the high-performance concrete structure adopts high-performance concrete at least comprising any one of the following materials: UHPC, HPC, RPC, polyphenyl fibre concrete, where the explanations for english abbreviations are: Ultra-High Performance Concrete (UHPC), also called Reactive Powder Concrete (RPC), for short; high Performance Concrete (HPC) is developed on the basis of High Strength Concrete (HSC), but of course, other types of suitable High performance concrete may also be used in the present invention.

In addition, assembled concrete spiral stair includes center pillar base 2, and center pillar base 2 is connected with from bottom to top overhanging stair center pillar connecting reinforcement 4, and center pillar reinforcement cage 101 is connected with stair center pillar connecting reinforcement 4, and center pillar reinforcement cage 101 includes along vertical direction a plurality of ring stirrup 102 that set up at interval in proper order and connect in a plurality of vertical reinforcing bars 103 of each ring stirrup 102.

Referring to fig. 6 to 11, the present invention also provides a construction method of the fabricated concrete spiral staircase according to the above, the construction method including the steps of:

a. installing the central shaft column base 2 at a position (such as the ground) of the stair to be installed, and of course, finishing ground leveling work before the installation, wherein the size of the central shaft column base 2 is adapted to the aperture of the inner through hole of the lower-level circular ring step 206, and the central shaft column base 2 is used for limiting and fixing the first stair step structure 200; arranging middle shaft column connecting steel bars 4 extending outwards from bottom to top at the middle shaft column base 2, and positioning and installing a starting stair step structure 200 in a plurality of steps (see fig. 6);

b. connecting a middle shaft column reinforcement cage 101 with a stair middle shaft column connecting reinforcement 4, then completing the hoisting and positioning of a plurality of stair step structures 200 in the current construction section, wherein the concrete mode of connecting the middle shaft column reinforcement cage 101 with the stair middle shaft column connecting reinforcement 4 can adopt a high-performance concrete reinforcement contactless lap joint technology without accurately positioning each section of middle shaft column reinforcement cage 101, namely, quickly completing the mutual staggered and mutual anchoring connection of each section of middle shaft column reinforcement cage 101 through high-performance concrete pouring, and also can adopt binding connection, or mechanical connection and welding connection for connecting the middle shaft column reinforcement cages 101 (see fig. 7);

c. the construction section of the assembled stair step structure 200 is subjected to high-strength concrete pouring construction of a middle shaft column reinforcement cage 101, and the middle shaft column reinforcement cage 101 with the height of the stair step structure 200 at least two steps is reserved, so that the stair step structure 200 of the subsequent construction section can be conveniently hoisted, and the middle shaft column reinforcement cages 101 of the upper section and the lower section are connected in an anchoring mode (see fig. 8); d. repeating the steps of hoisting the stair step structure 200, assembling and connecting the central column reinforcement cage 101 and pouring high-strength concrete into the central column reinforcement cage 101 to complete the construction of the first step structure layer (see fig. 9);

e. positioning and hoisting the rest platform 1 above the first step structure layer, supporting and fixing the rest platform 1, simultaneously performing high-strength concrete pouring construction on the central axis column reinforcement cage 101, and reserving the central axis column reinforcement cage 101 with the height of the two-step stair step structure 200 so as to facilitate hoisting of the stair step structure 200 of the subsequent construction section and anchoring connection of the upper and lower sections of the central axis column reinforcement cage 101 (see fig. 10);

f. repeating the steps of hoisting the stair step structure 200, assembling and connecting the central column reinforcement cage 101 and pouring high-strength concrete into the central column reinforcement cage 101, and completing the construction of the main structure part of the stair (see fig. 11);

g. the stair railing 3 is installed on each step of stair step structure 200, and during specific installation, a threaded rod at the lower end of the stair railing 3 penetrates through a reserved connecting hole 204 of a stair step and is connected through a bolt, so that the outer side ends of the upper stair step structure 200 and the lower stair step structure 200 which are adjacent to each other can be connected, the integrity of the stair is enhanced, and the purpose of step vibration is reduced. Meanwhile, the accessory has the function of a stair handrail, and the comfort and the safety of the stair in use are ensured (refer to fig. 3).

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.