CN109723140B - Construction method of prefabricated staircase - Google Patents
Construction method of prefabricated staircase Download PDFInfo
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- CN109723140B CN109723140B CN201711042558.6A CN201711042558A CN109723140B CN 109723140 B CN109723140 B CN 109723140B CN 201711042558 A CN201711042558 A CN 201711042558A CN 109723140 B CN109723140 B CN 109723140B
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Abstract
The invention discloses a construction method of a prefabricated staircase, which comprises the following steps: 1) marking and positioning; 2) installing the partition wall and the outer wall and casting a connecting part of the pillar and the groove at the bottom of the outer wall in a cast-in-place manner; 3) installing an interlayer platform; 4) installing a stair; 5) a beam floor is installed; 6) installing a floor platform; 7) installing a stair; 8) binding cast-in-place beam reinforcing steel bars and pouring connecting parts between the cast-in-place beams and the components; 9) the mold and support are removed. By adopting the construction method of the prefabricated staircase, the connection quality of the steel bars among the components is safe and reliable, the columns and the main beams of the main body frame of the staircase are of cast-in-place structures, and the continuity and the stability of the main body frame of the building are ensured, so that the integrity and the shock resistance of the staircase are improved; the stair part is fully prefabricated, so that subsequent construction operation is facilitated, and the stair has the advantages of improving the assembly rate of the stair, reducing templates, saving top supports, simplifying the construction method, shortening the construction time and the like.
Description
Technical Field
The invention relates to the technical field of assembly type building construction, in particular to a construction method of a prefabricated staircase.
Background
The construction method of the stairs in the building construction comprises a traditional cast-in-place structure and a prefabricated assembly structure. The traditional cast-in-place structure can give full play to the plasticity of reinforced concrete, has good structural performance and wide application, but has the defects of low construction speed, difficult formwork support, complex working procedures and the like. The prefabricated structure is produced in a factory and then transported to a construction site for installation, and has the advantages of reducing environmental pollution such as dust, construction waste and the like, simplifying construction methods, shortening construction period, ensuring the quality of prefabricated components and the like. At present, in the building construction of a staircase, the staircase is generally prefabricated, and a stair platform and a staircase partition wall are cast in situ, so that the defects of small assembly rate, long construction time and the like are overcome; in the prefabricated assembly type structure, the integrity and the shock resistance of the installation of prefabricated components such as a building main body frame, a stair and the like are lower than those of a traditional cast-in-place structure, so that the installation and the connection of the prefabricated components are particularly important.
Disclosure of Invention
The invention aims to provide a construction method of a prefabricated staircase, which aims to improve the assembly rate, save a top brace, simplify the construction method, shorten the construction time and improve the integrity and the shock resistance of a main body frame of the staircase.
The invention solves the technical problems by the following technical scheme:
the invention relates to a construction method of a prefabricated staircase, which comprises the following operation steps:
1) marking and positioning: marking and positioning on a foundation surface or a floor, and determining the installation position of each prefabricated part;
2) installing a partition wall and an outer wall: the method comprises the steps of firstly, setting mortar on a foundation surface or a floor surface of a wall body, then respectively hoisting an outer wall and partition walls on two sides of a staircase in place, erecting a wall body inclined support piece, connecting exposed steel bars inside and outside a mounting groove at the bottom of the partition wall with reserved steel bars on the foundation surface or the floor surface of the bottom layer for fixing, binding cast-in-place column steel bars, mounting a column and a mould of the mounting groove, and pouring concrete into the column and the mounting groove;
3) installing an interlayer platform: hoisting an interlayer platform, aligning a mounting groove I on the periphery of the interlayer platform with a vertical reserved steel bar I of a partition wall boss, and placing the interlayer platform on the partition wall boss;
4) installing a stair: hoisting the stairs, namely placing a projection at the upper end of the stair in an L-shaped groove II of the interlayer platform, and placing a projection at the lower end of the stair in an L-shaped groove IV of a foundation pit or a floor platform of the staircase;
5) installing a beam floor slab: setting grout on the top of the partition wall, respectively hoisting beam floor slabs on two sides of the staircase, aligning a groove with an external extending steel bar at one end of a beam with an exposed steel bar on the top of the partition wall, and placing the beam on the partition wall;
6) installing a floor platform: hoisting the floor platform, aligning the mounting grooves II at the two ends of the L-shaped groove III of the floor platform with the vertical reserved steel bars II with the beam floor boss, and then placing the floor platform on the beam floor boss;
7) installing a stair: hoisting the stairs, and respectively placing the lugs at the two ends of the stairs in the L-shaped groove II of the interlayer platform and the L-shaped groove IV of the floor platform;
8) pouring a connecting part between the cast-in-place beam and the component: binding cast-in-place beam reinforcing steel bars on two sides of a staircase on site, connecting and fixing the overhanging reinforcing steel bars on two ends of a beam floor slab and the overhanging reinforcing steel bars on the end part of a floor platform with the cast-in-place beam reinforcing steel bars, installing a cast-in-place beam combined mould, casting and molding the cast-in-place beam, and simultaneously pouring concrete into the installation groove I, the L-shaped groove I, the installation groove II and the L-shaped groove III;
9) removing the mould and the supporting piece: and after the construction is finished, removing the installation groove molds at the bottoms of the pillars and the partition walls, the cast-in-place beam combination mold and the wall body diagonal bracing piece, and then completing the installation of the staircases of one floor, wherein the staircases of each floor are installed according to the construction operation.
And 8) connecting and fixing the vertical reserved steel bar I and the reserved steel bar in the mounting groove I, and connecting and fixing the vertical reserved steel bar II and the reserved steel bar in the mounting groove II.
Connecting and fixing the stair overhanging steel bars and the interlayer platform overhanging steel bars in the L-shaped groove I before step 8), and connecting and fixing the stair overhanging steel bars and the reserved steel bars in the pits or the floor platform overhanging steel bars, wherein the stair overhanging steel bars and the floor platform overhanging steel bars are connected and fixed in the L-shaped groove III.
The partition wall, the outer wall, the interlayer platform, the stairs, the beam-containing floor slab and the floor platform are produced in a factory in advance and then transported to a field for installation.
The mounting groove I of the interlayer platform is smaller than the partition wall boss, and the mounting groove II of the floor platform is smaller than the beam floor boss.
Compared with the prior art, the invention has the following beneficial effects:
1. the pillars and the main beams of the main body frame of the staircase are of cast-in-place structures, so that the continuity and the stability of the main body frame of the building are guaranteed, and the integrity and the shock resistance of the staircase are improved.
2. The staircase, the staircase platform, part of the beams, the partition walls and the outer wall of the staircase are all prefabricated, the staircase is partially prefabricated, the subsequent construction operation is convenient, and the staircase has the advantages of improving the assembly rate of the staircase, reducing a large number of templates, simplifying the construction method, shortening the construction time and the like.
3. In the construction method of the prefabricated staircase, the stairway, the interlayer platform, the floor platforms, the interlayer platforms, the partition walls on two sides and the floor platforms and the beam floor slab are connected by adopting the steel bars and are poured with concrete, so that the connection quality is good, the integrity is strong, and the building quality is ensured.
4. In the construction method of the prefabricated staircase, the partition wall adopts a partial shear wall structure, so that the bearing capacity of the partition wall is improved, the partition wall plays a role of supporting an interlayer platform and a staircase, and the beam floor plays a role of supporting a floor platform and a staircase, so that the staircase is convenient to install, and a top support is saved.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of the prefabricated staircase according to the present invention.
Fig. 2 is a schematic view of the installation structure of the prefabricated staircase intermediate wall, the inter-story platform and the staircase according to the present invention.
Fig. 3 is a schematic view of the installation structure of the beam floor, the landing and the staircase in the prefabricated staircase according to the present invention.
In the figure: 1. the novel building comprises cast-in-place pillars, 2 floor platforms, 3 cast-in-place beams, 4 stairs, 5 outer walls, 6 windowed outer walls, 7 interlayer platforms, 8 partition walls, 9 beam floors, 10 wall inclined supporting pieces, 11 partition wall bosses, 12 vertical reserved steel bars I, 13 mounting grooves I, 14L-shaped grooves II, 15L-shaped grooves I and 16 interlayer platform overhanging steel bars, 17 bumps, 18 stair overhanging steel bars, 19 reinforcing steel bars, 20 beam floor bosses, 21L-shaped grooves III and 22 mounting grooves II, 23L-shaped grooves IV and 24 floor platform overhanging steel bars and 25 vertical reserved steel bars II.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the following further describes the specific implementation method of the present invention with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the construction method of the prefabricated staircase according to the present invention comprises the following steps:
1) marking and positioning: marking and positioning on a foundation surface or a floor, and determining the installation position of each prefabricated part;
2) installing the partition wall 8 and the outer wall 5: the method comprises the steps of firstly, setting mortar on a foundation surface or a floor surface of a wall body, then respectively hoisting an outer wall 5 and partition walls 8 on two sides of a staircase in place, erecting a wall body inclined support piece 10, connecting and fixing exposed steel bars in a mounting groove at the bottom of each partition wall 8 with reserved steel bars on the foundation surface or the floor surface of the bottom layer, binding cast-in-place column 1 steel bars, mounting a mould of the column and the mounting groove, and pouring concrete into the column and the mounting groove;
3) installing the interlayer platform 7: hoisting the interlayer platform 7, aligning the mounting grooves I13 around the interlayer platform 7 with the vertical reserved steel bars I12 of the partition wall boss 11, and then placing the interlayer platform 7 on the partition wall boss 11;
4) and (4) mounting a stair 4: hoisting the stair 4, placing the projection 17 at the upper end of the stair in the L-shaped groove II 14 of the interlayer platform 7, and placing the projection 17 at the lower end of the stair in the basic pit of the stair or the L-shaped groove IV 23 of the floor platform 2;
5) install beam floor 9: setting grout on the top of the partition wall 8, respectively hoisting beam floor slabs 9 on two sides of the staircase, aligning a groove with an external extending steel bar at one end of a beam with an exposed steel bar on the top of the partition wall 8, and then placing the beam on the partition wall 8;
6) installation of the floor platform 2: hoisting the floor platform 2, aligning the mounting grooves II 22 at the two ends of the L-shaped groove III 21 of the floor platform with the vertical reserved steel bars II 25 of the beam floor boss 20, and then placing the floor platform 2 on the beam floor boss 20;
7) and (4) mounting a stair 4: hoisting the stair 4, and respectively placing the lugs 17 at two ends of the stair in the L-shaped groove II 14 of the interlayer platform 7 and the L-shaped groove IV 23 of the floor platform 2;
8) pouring a connecting part between the cast-in-place beam 3 and the component: binding reinforcing steel bars of cast-in-place beams 3 on two sides of a staircase on site, connecting and fixing the overhanging reinforcing steel bars at two ends of a beam floor slab 9 and the overhanging reinforcing steel bars at the end part of a floor platform 2 with the reinforcing steel bars of the cast-in-place beams 3, installing a cast-in-place beam combined mould, casting and molding the cast-in-place beams 3, and simultaneously pouring concrete into an installation groove I13, an L-shaped groove I15, an installation groove II 22 and an L-shaped groove III 21;
9) removing the mould and the supporting piece: and after the construction is finished, the installation of the staircases of one floor is finished by removing the installation groove molds at the bottoms of the pillars and the partition walls, the cast-in-place beam combination molds and the wall body inclined supporting pieces 10, and the staircases of each floor are installed as above.
In the above step, the vertical reserved steel bar I12 is fixedly connected with the reserved steel bar in the mounting groove I13, and the vertical reserved steel bar II 25 is fixedly connected with the reserved steel bar in the mounting groove II 22 before step 8).
In the above steps, before step 8), the stair overhanging steel bars 18 and the interlayer platform overhanging steel bars 16 are fixedly connected by adding the reinforcing steel bars 19 in the L-shaped grooves i 15, and the stair overhanging steel bars 18 and the reserved steel bars in the pits or the floor platform overhanging steel bars 24 are fixedly connected by adding the reinforcing steel bars 19, wherein the stair overhanging steel bars 18 and the floor platform overhanging steel bars 24 are fixedly connected in the L-shaped grooves iii 21.
In the method, the partition wall 8, the outer wall 5, the interlayer platform 7, the stairs 4, the beam floor 9 and the floor platform 2 are produced in a factory in advance and then transported to a field for installation, wherein the outer wall of the stair room is divided into a windowless outer wall 5 and a windowed outer wall 6; the mounting groove I13 of the interlayer platform 7 is smaller than the partition wall boss 11, and the mounting groove II 22 of the floor platform 2 is smaller than the beam floor boss 20.
By adopting the construction method of the prefabricated staircase, the connection quality of the steel bars among the components is safe and reliable, the columns and the main beams of the main body frame of the staircase are of cast-in-place structures, and the continuity and the stability of the main body frame of the building are ensured, so that the integrity and the shock resistance of the staircase are improved; the stair part is fully prefabricated, so that subsequent construction operation is facilitated, and the stair has the advantages of improving the assembly rate of the stair, reducing templates, saving top supports, simplifying the construction method, shortening the construction time and the like.
Claims (5)
1. The construction method of the prefabricated staircase is characterized by comprising the following steps of:
1) marking and positioning: marking and positioning on a foundation surface or a floor, and determining the installation position of each prefabricated part;
2) installing a partition wall and an outer wall: the method comprises the steps of firstly, setting mortar on a foundation surface or a floor surface of a wall body, then respectively hoisting an outer wall and partition walls on two sides of a staircase in place, erecting a wall body inclined support piece, connecting exposed steel bars inside and outside a mounting groove at the bottom of the partition wall with reserved steel bars on the foundation surface or the floor surface of the bottom layer for fixing, binding cast-in-place column steel bars, mounting a column and a mould of the mounting groove, and pouring concrete into the column and the mounting groove;
3) installing an interlayer platform: hoisting an interlayer platform, aligning a mounting groove I on the periphery of the interlayer platform with a vertical reserved steel bar I of a partition wall boss, and placing the interlayer platform on the partition wall boss;
4) installing a stair: hoisting the stairs, namely placing a projection at the upper end of the stair in an L-shaped groove II of the interlayer platform, and placing a projection at the lower end of the stair in an L-shaped groove IV of a foundation pit or a floor platform of the staircase;
5) installing a beam floor slab: setting grout on the top of the partition wall, respectively hoisting beam floor slabs on two sides of the staircase, aligning a groove with an external extending steel bar at one end of a beam with an exposed steel bar on the top of the partition wall, and placing the beam on the partition wall;
6) installing a floor platform: hoisting the floor platform, aligning the mounting grooves II at the two ends of the L-shaped groove III of the floor platform with the vertical reserved steel bars II with the beam floor boss, and then placing the floor platform on the beam floor boss;
7) installing a stair: hoisting the stairs, and respectively placing the lugs at the two ends of the stairs in the L-shaped groove II of the interlayer platform and the L-shaped groove IV of the floor platform;
8) pouring a connecting part between the cast-in-place beam and the component: binding cast-in-place beam reinforcing steel bars on two sides of a staircase on site, connecting and fixing the overhanging reinforcing steel bars on two ends of a beam floor slab and the overhanging reinforcing steel bars on the end part of a floor platform with the cast-in-place beam reinforcing steel bars, installing a cast-in-place beam combined mould, casting and molding the cast-in-place beam, and simultaneously pouring concrete into the installation groove I, the L-shaped groove I, the installation groove II and the L-shaped groove III;
9) removing the mould and the supporting piece: and after the construction is finished, removing the installation groove molds at the bottoms of the pillars and the partition walls, the cast-in-place beam combination mold and the wall body diagonal bracing piece, and then completing the installation of the staircases of one floor, wherein the staircases of each floor are installed according to the construction operation.
2. The construction method of the prefabricated staircase according to the claim 1, characterized in that the vertical preformed steel bar I is fixedly connected with the preformed steel bar in the mounting groove I, and the vertical preformed steel bar II is fixedly connected with the preformed steel bar in the mounting groove II before the step 8).
3. The construction method of the prefabricated staircase according to claim 1, wherein the staircase overhanging reinforcement and the inter-floor platform overhanging reinforcement are fixedly connected in the L-shaped groove i and the staircase overhanging reinforcement and the pit reserved reinforcement or the floor platform overhanging reinforcement are fixedly connected before step 8), wherein the staircase overhanging reinforcement and the floor platform overhanging reinforcement are fixedly connected in the L-shaped groove iii.
4. The prefabricated staircase construction method as claimed in claim 1, wherein the partition walls, the outer walls, the landings, the stairways, the girder floors and the floor landings are previously manufactured in a factory and then transported to a site for installation.
5. The method of constructing a prefabricated staircase according to claim 1, wherein the installation recess i of the inter-floor platform is smaller than the partition bosses and the installation recess ii of the floor platform is smaller than the beam-floor bosses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711042558.6A CN109723140B (en) | 2017-10-30 | 2017-10-30 | Construction method of prefabricated staircase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711042558.6A CN109723140B (en) | 2017-10-30 | 2017-10-30 | Construction method of prefabricated staircase |
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| Publication Number | Publication Date |
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| CN109723140A CN109723140A (en) | 2019-05-07 |
| CN109723140B true CN109723140B (en) | 2021-02-23 |
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| CN201711042558.6A Expired - Fee Related CN109723140B (en) | 2017-10-30 | 2017-10-30 | Construction method of prefabricated staircase |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962666B (en) * | 2019-05-20 | 2022-06-28 | 润弘精密工程事业股份有限公司 | Construction method of building internal structure |
| CN110924568A (en) * | 2019-10-24 | 2020-03-27 | 中天西北建设投资集团有限公司 | Method for constructing stair partition wall by adopting precast concrete hollow wall board |
| CN111188501B (en) * | 2020-02-23 | 2024-08-16 | 哈尔滨达城绿色建筑股份有限公司 | Split assembled block building stairwell and wallboard same-layer construction method thereof |
| CN112209205B (en) * | 2020-10-20 | 2023-03-24 | 张跃 | Modular elevator/stair structure |
| CN113789925B (en) * | 2021-09-23 | 2022-06-10 | 山东大学 | Fast-assembling steel pipe concrete superposed shear wall staircase and installation method |
| CN116335355B (en) * | 2023-04-10 | 2023-11-24 | 中一达建设集团有限公司 | Assembled stair construction process and construction support |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3347206B2 (en) * | 1994-01-10 | 2002-11-20 | 株式会社フジタ | Precast concrete stairs |
| CN201217898Y (en) * | 2008-06-19 | 2009-04-08 | 黑龙江宇辉新型建筑材料有限公司 | Concrete prefabricated stairs |
| CN101787738B (en) * | 2010-03-12 | 2011-10-19 | 南通建筑工程总承包有限公司 | Stair connection joint device |
| CN103132660B (en) * | 2013-03-11 | 2014-12-24 | 新疆七星建设科技股份有限公司 | Concrete precast stairway fixed end support |
| CN204418558U (en) * | 2015-01-16 | 2015-06-24 | 济南轨道交通集团有限公司 | A kind of separate type precast hollow landing |
| CN205712818U (en) * | 2016-04-13 | 2016-11-23 | 山东齐兴住宅工业有限公司 | A kind of lightweight integrally assembling staircase |
| CN105839836B (en) * | 2016-05-30 | 2018-08-21 | 上海建工二建集团有限公司 | A kind of precast concrete shear wall component and its construction method |
| CN206174195U (en) * | 2016-09-29 | 2017-05-17 | 沈阳建筑大学建筑设计研究院 | Assembled concrete shear force wall split, assemble connection structure |
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2017
- 2017-10-30 CN CN201711042558.6A patent/CN109723140B/en not_active Expired - Fee Related
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Granted publication date: 20210223 Termination date: 20211030 |