CN111305495A - Lightweight concrete combined stair - Google Patents
Lightweight concrete combined stair Download PDFInfo
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- CN111305495A CN111305495A CN202010178732.5A CN202010178732A CN111305495A CN 111305495 A CN111305495 A CN 111305495A CN 202010178732 A CN202010178732 A CN 202010178732A CN 111305495 A CN111305495 A CN 111305495A
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- truss
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- trusses
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/09—Tread-and-riser units
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/104—Treads
- E04F11/116—Treads of stone, concrete or like material or with an upper layer of stone or stone like material, e.g. ceramics, concrete; of glass or with an upper layer of glass
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
A lightweight concrete combined stair belongs to the technical field of building components and comprises a stair beam plate, a step pier and a corner beam plate; the steel bar trusses of the ladder beam plate, the step pier and the corner beam plate are integral steel bar trusses, and the integral steel bar trusses are formed by mutually inserting, binding or welding steel beam trusses, step trusses and corner trusses; the steel beam truss is formed by binding or welding a plurality of diamond-shaped beam frames and cross beams; the step truss is formed by binding or welding a plurality of first triangular strong frames and cross beams; the corner truss is formed by binding or welding a plurality of second triangular strong frames, third triangular strong frames and cross beams; the stair has the beneficial effects that the step trusses, the corner trusses and the steel girder trusses are mutually connected in a staggered manner, so that the bearing capacity can be greatly improved by combining the weight of the prefabricated stair made of the lightweight concrete material, the vibration is reduced, the self weight is reduced, and the steps are comfortable.
Description
Technical Field
The invention belongs to the technical field of building components, and particularly relates to a lightweight concrete combined stair.
Background
The prefabricated parts are manufactured in factories and can be directly installed on a building after being lifted to a construction site, so that the speed of building construction can be greatly increased. At present, the prefabricated assembled stair structure of a factory in China mainly adopts a steel structure prefabricated stair. However, the steel structure prefabricated staircase has a plurality of defects in design and construction, mainly the steel structure prefabricated staircase generally adopts the separated processing of a staircase steel beam and a tread plate, and needs to be welded on site to form a whole, so that the site installation process is troublesome, and the integrity of the staircase is poor; the steel structure stair adopts the anti-rust paint to carry out rust prevention, and the anti-rust paint can be aged, so that the rust prevention treatment is carried out every few years, the service life cycle of the whole building is dozens of years, the rust prevention cost is high, and the rust prevention treatment process is relatively troublesome. The prefabricated staircase of steel construction vibrations are great, and the travelling comfort is relatively poor when using on the house.
Patent document CN 105113723B discloses a prefabricated formula combination stair, including a plurality of ladder step bodies, the cross section of ladder step body includes 1 mesa limit and 1 lower base, 2 sides, and 2 sides set up along vertical direction, still include the ladder step groove spare that the slope set up, and the front undercut of ladder step groove spare forms a recess, and a plurality of ladder step bodies insert behind the recess, along the tank bottom surface of recess in proper order the extrusion stack in the slant to form the step body. This scheme utilizes the dead weight extrusion of the ladder step body to make the ladder step body restrict in the recess of ladder step groove spare, and the equipment is very convenient, and the cost is with low costs, and structural strength to the ladder step body simultaneously requires lowly, therefore the ladder step body can directly adopt the light material preparation, the dead weight of the whole stair of reduction that can be very big. However, the scheme has a great defect 1. after the ladder step body is assembled in the ladder step groove body, the whole ladder plate is very thick, but only the ladder step groove body which actually plays a bearing role needs to be made very thick, and the ladder step body does not play a bearing role, so that materials are wasted and the bearing is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a combined stair with a light reinforced concrete structure, wherein a step body and a step groove body are made into a whole, and a special rigid truss is adopted to strengthen the bearing strength.
In order to solve the technical problem, the invention adopts the technical scheme that the lightweight concrete combined stair comprises a ladder beam plate, a step pier and a corner beam plate; the number of the step piers is multiple, and the corner beam plates comprise upper corner beam plates and lower corner beam plates; the step piers are directly poured above the ladder beam plate, and the upper corner beam plate and the lower corner beam plate are directly poured at the upper end and the lower end of the ladder beam plate; the ladder beam plate, the step pier and the corner beam plate are all formed by pouring lightweight concrete on the steel bar truss and condensing the lightweight concrete; the steel bar truss structure is characterized in that the steel bar trusses of the ladder beam plate, the step piers and the corner beam plate are integral steel bar trusses, and the integral steel bar trusses are formed by mutually inserting, binding or welding steel beam trusses, step trusses and corner trusses; the steel beam truss is formed by binding or welding a plurality of diamond-shaped beam frames and cross beams; the step truss is formed by binding or welding a plurality of first triangular strong frames and cross beams; the corner truss is formed by binding or welding a plurality of second triangular strong frames, third triangular strong frames and cross beams; wherein: the rhombic beam frame is formed by sequentially welding an upper longitudinal beam, an upper short column, a lower longitudinal beam and a lower short column; the first triangular strength frame is made of six steel bars, wherein the first bar is a vertical column, the second bar is a horizontal beam, the third bar is an oblique side beam, the vertical column, the horizontal beam and the oblique side beam are welded into a right-angled triangle, the fourth bar is an inner oblique beam, the inner oblique beam is welded on the two right-angled sides and is parallel to the oblique side to form a built-in right-angled triangle, the fifth bar is an oblique pier column, the oblique pier column is vertically welded with the inner oblique beam through the vertex of the right-angled triangle, the sixth bar is an inner pier column, the inner pier column is vertically welded with the horizontal beam through the joint of the oblique pier column and the inner oblique beam, and therefore the first triangular strength frame formed by six staggered right-angled triangles is formed; according to the stability principle of the triangle, the integrated triangular structure formed by six mutually staggered right-angled triangles can multiply the bearing capacity; the second triangular strength frame is made of four steel bars, wherein three steel bars are welded into a right-angle triangle, and the other steel bar is welded with the middle point of the bevel edge through the right-angle vertex, so that the four steel bars form three integrated triangles; the third triangular strength frame is made of four steel bars, wherein three steel bars are welded into an obtuse triangle, and the other steel bar is welded with the midpoint of the long side through the joint of the two short sides, so that the four steel bars form an integrated three triangle; according to the stability principle of the triangle, the integrated triangular structure can multiply the bearing capacity; on a longitudinal section, the bevel edge beams of the first triangular strong frame are combined and bound with the lower longitudinal beam, the inner bevel beams are combined and bound with the upper longitudinal beam to form a stepping truss fixed on the steel beam truss in a staggered manner, the inner bevel beams on the plurality of stepping trusses are sequentially bound on the upper longitudinal beam in an end-to-end manner, and the bevel edge beams are mutually bound on the lower longitudinal beam in a staggered manner; the bevel edge of the second triangular strength frame and the bevel edge of the third triangular strength frame are equal in length, combined and bound to form a right-angled trapezoid strength frame; at the upper end of the steel girder truss, the bevel edge of the right trapezoid strength frame is combined and bound with the upper longitudinal beam, and the bottom edge of the right trapezoid strength frame is abutted against the upper end of the lower longitudinal beam to form an upper corner truss; at the lower end of the steel girder truss, the bevel edge of the right trapezoid strength frame is combined and bound with the lower longitudinal beam, and the bottom edge of the right trapezoid strength frame is abutted against the lower end of the upper longitudinal beam to form a lower corner truss; therefore, the lower corner trusses, the steel girder trusses, the plurality of step trusses and the upper corner trusses form an integral steel bar truss.
The rhombic beam frames in the steel beam truss are transversely and uniformly arranged, and the arrangement distance is 8-10 cm; the beams are uniformly arranged in the longitudinal direction, and the arrangement distance is 13-17 cm.
The first triangular strength frames in the step truss are transversely and uniformly arranged, and the arrangement distance is 8-10 cm.
The right-angle trapezoidal strength frames in the corner truss are transversely and uniformly arranged, and the arrangement distance is 8-10 cm.
During assembly, the upper corner beam plate and the lower corner beam plate at the upper end and the lower end of the lightweight concrete combined stair are directly installed on the corner frame of the staircase.
The invention has the advantages that the steel bar truss of the ladder beam plate is made into a double-layer steel bar frame body consisting of a plurality of diamond beam frames, the steel bar truss of the step pier is made into an integrated triangular strong frame consisting of six mutually staggered right-angled triangles, the steel bar truss of the corner beam plate is made into a right-angled trapezoidal strong frame consisting of two triangles, and the step truss, the corner truss and the steel bar truss are mutually staggered and connected, so that the weight of the prefabricated staircase made of the light concrete material can greatly improve the bearing capacity, reduce the vibration, lighten the dead weight and make the step comfortable.
Drawings
Fig. 1 is a schematic overall perspective structure of the present invention.
Fig. 2 is a schematic side view of an integrated steel bar truss consisting of a steel girder truss, a step truss and a corner truss according to the present invention.
Fig. 3 is a schematic structural view of a diamond-shaped beam frame for a steel beam according to the present invention.
Fig. 4 is a schematic structural view of a first triangular strength frame according to the present invention.
Fig. 5 is a schematic structural view of the right trapezoid reinforcing frame of the present invention.
In the figure: 1. the structure comprises ladder beam plates, 2 steps of piers, 3 corner beam plates, 31 upper corner beam plates, 32 lower corner beam plates, 4 steel bar trusses, 5 steel beam trusses, 6 step trusses, 7 corner trusses, 51 upper longitudinal beams, 52 lower longitudinal beams, 8 first triangular strength frames, 9 second triangular strength frames, 10 third triangular strength frames, 81 vertical columns, 82 horizontal beams, 83 oblique side beams, 84 inner oblique beams, 85 oblique pier columns, 86 inner pier columns, 11 right-angle trapezoidal strength frames, 71 upper corner trusses and 72 lower corner trusses.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in the figure, the lightweight concrete combined stair is manufactured and comprises a stair beam plate 1, a step pier 2 and a corner beam plate 3; a plurality of the step piers 2 are provided, and the corner beam plates 3 comprise upper corner beam plates 31 and lower corner beam plates 32; the step piers 2 are directly poured above the ladder beam plate 1, and the upper corner beam plate 31 and the lower corner beam plate 32 are directly poured at the upper end and the lower end of the ladder beam plate 1; the ladder beam plate 1, the step piers 2 and the corner beam plates 3 are formed by pouring lightweight concrete on a steel bar truss and condensing the lightweight concrete.
Firstly, manufacturing a steel bar truss of the ladder beam plate 1, namely a steel beam truss 5, wherein the diameters of the following steel bars are phi 12mm, using two steel bars with the length of 300cm as an upper longitudinal beam 51 and a lower longitudinal beam 52, using two steel bars with the length of 10cm as an upper short column and a lower short column, sequentially welding the upper longitudinal beam 51, the upper short column, the lower longitudinal beam 52 and the lower short column, enabling the distance between the upper longitudinal beam 51 and the lower longitudinal beam 52 to be 80mm, manufacturing a rhombic beam frame, arranging 21 groups of rhombic beam frames according to the 100mm interval, manufacturing a double-layer steel bar beam with an upper-layer upper longitudinal beam and a lower-layer lower longitudinal beam, transversely arranging 11 transverse steel bars with the length of 160cm on each layer of steel bars as cross beams, and arranging one transverse steel bar at intervals of 30 cm; and then binding is carried out to form the steel girder truss 5.
Then a first triangular strength frame 8 is manufactured, the first triangular strength frame 8 is made of six steel bars, wherein the first steel bar is a vertical column 81, the second steel bar is a horizontal beam 82, and the third steel bar is a bevel-edge beam 83, the lengths of the vertical column 81, the horizontal beam 82 and the bevel-edge beam 83 are respectively cut into 250mm, 333mm and 417mm and welded into a right-angled triangle; the fourth is the inner oblique beam 84, the length of the inner oblique beam 84 is cut into 250mm and welded at 3/5 positions on two right-angle sides and is parallel to the oblique side beam 83, the distance between the inner oblique beam 84 and the oblique side beam 83 is 8cm, a built-in right-angled triangle is formed, the fifth is the oblique pier column 85, the length of the oblique pier column 85 is cut into 120mm and is welded with the inner oblique beam 84 vertically through the vertex of the right angle of the triangle, the sixth is the inner pier column 86, the length of the inner pier column 86 is cut into 96mm and is welded with the inner oblique beam 84 vertically through the junction of the oblique pier column 85 and the horizontal beam 82, and therefore the first triangular strong force frame 8 formed by six right-angled triangles which are staggered mutually is formed.
Then, a second triangular strength frame 9 is manufactured, the second triangular strength frame 9 is made of four steel bars, the lengths of the second triangular strength frame 9 are respectively 100mm, 400mm, 412mm and 206mm, the first three steel bars are welded into a right-angled triangle, and the other steel bar is welded with the middle point of the bevel edge through the top point of the right angle, so that the four steel bars form three integrated triangles; the second triangular strength frame 9 is made.
Then, a third triangular strength frame 10 is manufactured, the third triangular strength frame 10 is made of four steel bars, the lengths of the third triangular strength frame are 177mm, 421mm, 267mm and 84mm respectively, the first three steel bars are welded into an obtuse triangle, and the other steel bar is welded with the middle point of the long side through the joint of the two short sides, so that the four steel bars form three integrated triangles; the third triangular strength frame 10 is made.
Then, on a longitudinal section, combining and binding the bevel edge beam 83 of the first triangular strong frame 8 with the lower longitudinal beam 52, combining and binding the inner bevel edge beam 84 with the upper longitudinal beam 51 to form a step truss 6 fixed on the steel girder truss 5 in a staggered manner, and continuing to bind in such a manner, wherein the inner bevel edge beams 84 on a plurality of step trusses 6 are sequentially bound on the upper longitudinal beam 51 in an end-to-end manner, and the bevel edge beams 83 are mutually and alternately bound on the lower longitudinal beam 52; the step trusses 6 are integrally bound on the steel girder truss in a staggered way; on the transverse face, a first triangular strength frame is bound every 100 mm.
Then combining and binding the bevel edge of the second triangular strength frame 9 and the bevel edge of a third triangular strength frame 10 to form a right-angled trapezoid strength frame 11; at the upper end of the steel girder truss 5, the bevel edge of the right trapezoid reinforcing frame 11 is combined and bound with the upper longitudinal beam 51, and the bottom edge of the right trapezoid reinforcing frame 11 is abutted against the upper end of the lower longitudinal beam 52 to form an upper corner truss 71; at the lower end of the steel girder truss 5, the bevel edge of the other right trapezoid reinforcing frame 11 is combined and bound with the lower longitudinal beam 52, and the bottom edge of the right trapezoid reinforcing frame 11 is abutted against the lower end of the upper longitudinal beam 51 to form a lower corner truss 72; binding right-angled trapezoid strength frames on the transverse surface every 100 mm; in this way, the lower corner trusses 72, the steel girder trusses 5, the step trusses 6, and the upper corner trusses 71 together form the steel bar trusses 4 which are staggered with each other and have an integral shape. And then, wrapping the enclosing plates according to a conventional method, pouring light concrete, maintaining, and removing the enclosing plates to obtain the integral combined stair with the light reinforced concrete structure.
Claims (4)
1. A lightweight concrete combined stair comprises a stair beam plate, a step pier and a corner beam plate; the number of the step piers is multiple, and the corner beam plates comprise upper corner beam plates and lower corner beam plates; the step piers are directly poured above the ladder beam plate, and the upper corner beam plate and the lower corner beam plate are directly poured at the upper end and the lower end of the ladder beam plate; the ladder beam plate, the step pier and the corner beam plate are all formed by pouring lightweight concrete on the steel bar truss and condensing the lightweight concrete; the steel bar truss structure is characterized in that the steel bar trusses of the ladder beam plate, the step piers and the corner beam plate are integral steel bar trusses, and the integral steel bar trusses are formed by mutually inserting, binding or welding steel beam trusses, step trusses and corner trusses;
the steel beam truss is formed by binding or welding a plurality of diamond-shaped beam frames and cross beams;
the step truss is formed by binding or welding a plurality of first triangular strong frames and cross beams;
the corner truss is formed by binding or welding a plurality of second triangular strong frames, third triangular strong frames and cross beams;
wherein:
the rhombic beam frame is formed by sequentially welding an upper longitudinal beam, an upper short column, a lower longitudinal beam and a lower short column;
the first triangular strength frame is made of six steel bars, wherein the first bar is a vertical column, the second bar is a horizontal beam, the third bar is an oblique side beam, the vertical column, the horizontal beam and the oblique side beam are welded into a right-angled triangle, the fourth bar is an inner oblique beam, the inner oblique beam is welded on the two right-angled sides and is parallel to the oblique side to form a built-in right-angled triangle, the fifth bar is an oblique pier column, the oblique pier column is vertically welded with the inner oblique beam through the vertex of the right-angled triangle, the sixth bar is an inner pier column, the inner pier column is vertically welded with the horizontal beam through the joint of the oblique pier column and the inner oblique beam, and therefore the first triangular strength frame formed by six staggered right-angled triangles is formed;
the second triangular strength frame is made of four steel bars, wherein three steel bars are welded into a right-angle triangle, and the other steel bar is welded with the middle point of the bevel edge through the right-angle vertex, so that the four steel bars form three integrated triangles;
the third triangular strength frame is made of four steel bars, wherein three steel bars are welded into an obtuse triangle, and the other steel bar is welded with the midpoint of the long side through the joint of the two short sides, so that the four steel bars form an integrated three triangle;
on a longitudinal section, the bevel edge beams of the first triangular strong frame are combined and bound with the lower longitudinal beam, the inner bevel beams are combined and bound with the upper longitudinal beam to form a stepping truss fixed on the steel beam truss in a staggered manner, the inner bevel beams on the plurality of stepping trusses are sequentially bound on the upper longitudinal beam in an end-to-end manner, and the bevel edge beams are mutually bound on the lower longitudinal beam in a staggered manner; the bevel edge of the second triangular strength frame and the bevel edge of the third triangular strength frame are equal in length, combined and bound to form a right-angled trapezoid strength frame; at the upper end of the steel girder truss, the bevel edge of the right trapezoid strength frame is combined and bound with the upper longitudinal beam, and the bottom edge of the right trapezoid strength frame is abutted against the upper end of the lower longitudinal beam to form an upper corner truss; at the girder steel truss lower extreme, the hypotenuse of right trapezoid high-strength frame merges with longeron down and binds to the lower extreme of longeron is gone up in the base butt of right trapezoid high-strength frame, constitutes the lower corner truss.
2. The lightweight concrete composite stair of claim 1, wherein the diamond-shaped beam frames in the steel beam truss are transversely and uniformly arranged at an interval of 8-12 cm; the beams are uniformly arranged in the longitudinal direction, and the arrangement distance is 13-17 cm.
3. The lightweight concrete composite stair of claim 2, wherein the first triangular strength frames in the step truss are transversely and uniformly arranged at an interval of 8-12 cm.
4. The lightweight concrete composite stair according to claim 3, wherein the right-angled trapezoidal strength frames in the corner truss are transversely and uniformly arranged at an interval of 8-12 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178732.5A CN111305495B (en) | 2020-03-15 | 2020-03-15 | Lightweight concrete combined stair |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178732.5A CN111305495B (en) | 2020-03-15 | 2020-03-15 | Lightweight concrete combined stair |
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| Publication Number | Publication Date |
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| CN111305495A true CN111305495A (en) | 2020-06-19 |
| CN111305495B CN111305495B (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010178732.5A Active CN111305495B (en) | 2020-03-15 | 2020-03-15 | Lightweight concrete combined stair |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266116A (en) * | 2021-05-19 | 2021-08-17 | 济南一建集团有限公司 | Prefabricated stair structure and manufacturing and mounting method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0860825A (en) * | 1994-08-18 | 1996-03-05 | Taisei Prefab Kk | Construction method of staircase |
| CN103696543A (en) * | 2013-12-16 | 2014-04-02 | 苏州工业园区设计研究院股份有限公司 | Truss reinforcement stair |
| CN104499664A (en) * | 2014-12-17 | 2015-04-08 | 张跃 | Lightweight concrete step and manufacturing method thereof |
| CN204571133U (en) * | 2015-04-22 | 2015-08-19 | 山东同圆设计集团有限公司 | The light prefabricated stair of a kind of steel truss |
| CN206625460U (en) * | 2017-03-15 | 2017-11-10 | 湖南城市学院 | Triangle component frame |
| CN210032405U (en) * | 2019-04-16 | 2020-02-07 | 西安方平建筑科技有限公司 | Light prefabricated stair tread |
-
2020
- 2020-03-15 CN CN202010178732.5A patent/CN111305495B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0860825A (en) * | 1994-08-18 | 1996-03-05 | Taisei Prefab Kk | Construction method of staircase |
| CN103696543A (en) * | 2013-12-16 | 2014-04-02 | 苏州工业园区设计研究院股份有限公司 | Truss reinforcement stair |
| CN104499664A (en) * | 2014-12-17 | 2015-04-08 | 张跃 | Lightweight concrete step and manufacturing method thereof |
| CN204571133U (en) * | 2015-04-22 | 2015-08-19 | 山东同圆设计集团有限公司 | The light prefabricated stair of a kind of steel truss |
| CN206625460U (en) * | 2017-03-15 | 2017-11-10 | 湖南城市学院 | Triangle component frame |
| CN210032405U (en) * | 2019-04-16 | 2020-02-07 | 西安方平建筑科技有限公司 | Light prefabricated stair tread |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266116A (en) * | 2021-05-19 | 2021-08-17 | 济南一建集团有限公司 | Prefabricated stair structure and manufacturing and mounting method thereof |
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| CN111305495B (en) | 2021-02-26 |
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