CN110984359A - Low-rise assembled building structure - Google Patents

Low-rise assembled building structure Download PDF

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Publication number
CN110984359A
CN110984359A CN201910675515.4A CN201910675515A CN110984359A CN 110984359 A CN110984359 A CN 110984359A CN 201910675515 A CN201910675515 A CN 201910675515A CN 110984359 A CN110984359 A CN 110984359A
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CN
China
Prior art keywords
cast
prefabricated
layer
steel bars
floor
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Pending
Application number
CN201910675515.4A
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Chinese (zh)
Inventor
王二成
王向阳
李冲
郑贤贤
赵阳
刘凯
杨宝坤
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Hebei University of Engineering
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Hebei University of Engineering
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Publication date
Application filed by Hebei University of Engineering filed Critical Hebei University of Engineering
Priority to CN201910675515.4A priority Critical patent/CN110984359A/en
Publication of CN110984359A publication Critical patent/CN110984359A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/16Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
    • E04B1/164Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material with vertical and horizontal slabs, only the horizontal slabs being partially cast in situ
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • E04B2/64Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162Connectors or means for connecting parts for reinforcements

Abstract

The utility model provides a low-rise fabricated building structure, includes the foundation beam, sets up in the prefabricated wallboard of foundation beam top, sets up in the edge member at both ends about the prefabricated wallboard, sets up in the cast-in-place crossbeam in wall body top, sets up in the prefabricated floor layer of cast-in-place crossbeam top, sets up in the cast-in-place floor layer of prefabricated floor layer top, two layers are repeated construction in proper order. Wherein, double layers of bidirectional distributed steel bars are arranged in the prefabricated wall board, and a single-row corrugated pipe is embedded in the design position of the bottom of the wall board in advance; the crossbeam is embedded with a single row of vertical dowel shear keys; the wall plate reinforcing steel bars and the cross beam reinforcing steel bars positioned below the wall plate are overlapped to form a reliable whole through edge member reinforcing steel bars; the wall plate reinforcing steel bars and the cast-in-place floor plate reinforcing steel bars above the wall plate are overlapped into a whole through the cast-in-place cross beam reinforcing steel bars. The connection form of the wall plate and the beam and the connection form of the wall plate and the floor slab avoid the damage phenomenon that the upper wall body integrally slides when the wall body is sheared. The first floor prefabricated wall plate reinforcing steel bars are welded with the cast-in-place floor plate reinforcing steel bars, and the effect close to the stress performance of a cast-in-place wall body is achieved.

Description

Low-rise assembled building structure
Technical Field
The invention particularly relates to a low-rise assembled building structure, belongs to the technical field of assembled buildings, and particularly relates to the low-rise assembled building structure which is high in positioning accuracy, high in construction speed, time-saving, labor-saving and strong in stress performance.
Background
Wall body horizontal joint often has steel bar muffjoint among the low-rise assembled building structure, often has bolted connection between wallboard and the floor, but these connection methods have following problem: 1. in the construction process, grouting is not easy to occur due to the narrow and narrow grouting hole, a worker can paint cement paste on the upper grout outlet of the sleeve to make the false appearance of the flow at the upper grout outlet; 2. When the bolt connecting wall and the plate are aligned to the bolt holes, the control is difficult, the construction difficulty is relatively high, and the weighing performance is difficult to control; the invention discloses a novel assembly type building construction process based on a novel wall horizontal joint connecting technology and a floor and wallboard connecting technology, so that the construction speed, the construction cost and the stress performance are optimized.
Aiming at the problems of the assembly type building structure, the invention provides a novel low-rise assembly type building structure and a construction process thereof, aiming at overcoming the defects and shortcomings in the prior art, and the reliability of the stress performance of the whole structure is ensured on the premise of convenient construction, low construction cost and mass production.
Disclosure of Invention
In order to solve the problems, the invention provides the low-rise fabricated building structure which is high in positioning accuracy, high in construction speed, time-saving, labor-saving and strong in stress performance.
The wall structure comprises an edge member connected with a bottom beam steel bar, a prefabricated wall plate connected with the edge member steel bar, and a mortar layer connecting the prefabricated wall plate and the bottom beam, wherein the floor structure is divided into a prefabricated floor layer and a cast-in-place floor layer double-layer structure, the edge member steel bar is built after the wall plate is assembled to a specified position, an inserted bar shear key is added between the prefabricated wall plate and the beam, the bottom beam is pre-embedded with a vertical inserted bar to avoid insufficient shear strength caused by lack of shear reinforcement due to pure mortar connection between the middle prefabricated wall plate and the bottom beam, the inserted bar shear key is also pre-embedded between the two layers and the upper beam and penetrates through the cast-in-place floor layer to be inserted into the two layers of wall plates, and when the two layers of beams are poured, the reserved lap joint of the first layer of wall plate and the internal steel bar thereof are bound and the lap joint steel bar of the cast-in-place floor plate is reserved, when two layers and above crossbeams are poured, vertical joint bars are embedded in the designed positions, and the first layer structure is assembled on two layers and above wallboards.
Furthermore, the embedded dowel bars of the foundation beam are bound with the beam steel bars when the foundation beam is manufactured, and the dowel bars of two or more layers are bound with the beam steel bars before the beam is poured, and the diameter is not easy to be too small, so that the sufficient shear strength is ensured.
Furthermore, the bottom end of the prefabricated wallboard is provided with a corrugated pipe with the size matched with the joint bars, a cavity with enough thickness is reserved between the corrugated pipe and the joint bars, and the filled mortar can reach enough strength.
Further, a 20mm mortar layer is arranged between the prefabricated wall board and the bottom cross beam.
The invention has the following beneficial effects:
the prefabricated wall plate reinforcing steel bars and the bottom cross beam reinforcing steel bars are indirectly lapped together by using edge member reinforcing steel bars to form an integral reinforcing steel bar framework, so that the integral reinforcing steel bar framework is stressed cooperatively, the inserted steel bars are arranged between the prefabricated wall plate and the bottom cross beam, and the inserted steel bars are arranged between the two layers of cross beams and the two layers of prefabricated wall plates. The dowel bars are poured into the cross beam, so that the adjustment of the dowel bars is facilitated, the phenomenon that the horizontal joint loses shear resistance too early due to insufficient shear strength is avoided, and the stress performance is more excellent and is closer to that of a cast-in-place member.
In addition, the assembly type building structure can effectively simplify construction steps, is convenient to operate, has small workload, reduces construction cost and can be produced in batch.
Drawings
FIG. 1 is a detailed schematic view of a fabricated building structure of the present invention;
FIG. 2 is a detailed schematic view of the horizontal joint connection structure of the fabricated shear wall according to the present invention;
FIG. 3 is a cross-sectional view of the shear wall of the present invention shown in FIG. 1;
FIG. 4 is a detailed cross-sectional view of the shear wall of the present invention shown in FIG. 1 with horizontal joints connected;
fig. 5 is a schematic view of the internal structure of the prefabricated wall panel of the present invention: the corrugated pipe is pre-embedded in the concrete slab and is not directly connected with the vertical steel bar of the wallboard;
FIG. 6 is a schematic view of the internal structure of a shear wall foundation beam according to the present invention;
FIG. 7 is a detailed view of the assembled structural wall panel and floor slab connection of the present invention;
wherein, 1-foundation beam, 2-edge member, 3-prefabricated wall panel, 4-two layers of cast-in-place beam, 5-ceramic tile roof supported by truss structure, 6-mortar layer, 7-embedded corrugated pipe, 8-steel-inserted shear key, 9-prefabricated wall panel reserved transverse lapping steel bar, 10-prefabricated wall panel reserved longitudinal lapping steel bar, 11-foundation beam internal reinforcement, 12-foundation beam reserved lapping steel bar, 13-first layer of prefabricated wall panel, 14-second layer of prefabricated wall panel, 15-cast-in-place floor layer, 16-prefabricated floor layer, 17-prefabricated floor distribution steel bar, 18-two layers of cast-in-place beam reserved lapping steel bar
Detailed Description
As shown in fig. 1 to 7, a low-rise fabricated building structure, a wall body is connected with a horizontal joint connection structure of an upper prefabricated wall plate and a foundation beam by mortar, a floor plate is provided with a two-layer structure of a prefabricated floor layer and a cast-in-place floor layer, and the low-rise fabricated building structure generally comprises a foundation beam 1, two layers of cast-in-place beams 4, edge members 2, prefabricated wall plates 3 and a ceramic tile roof 5 supported by a truss structure.
Wherein to first floor structure, it is pre-buried at the wallboard bottom with diameter 30mm ~ 40 mm's single-row bellows 7 during the prefabricated wallboard preparation, pour diameter 20 mm's single-row joint bar 8 at the design position during the base beam preparation, build 10mm ~ 20 mm's mortar 6 on the crossbeam during assembly first, fill the concrete with bellows cavity in, then assemble the wallboard and make bellows 7 aim at with joint bar 8 and take one's place, later lap joint base beam reserves overlap joint reinforcing bar 12 and edge member reinforcing bar, edge member reinforcing bar and prefabricated wallboard transverse reinforcement 9, the edge member of pouring again, when first floor capping: the beam 4 is poured on the first layer wall body, the prefabricated floor 16 is built after the cast-in-place beam reaches a certain strength, then the cast-in-place floor layer steel bars and the reserved longitudinal lap joint steel bars 10 of the first layer wall body are bound, the dowel bars 8 are bound at set positions, and finally the floor layer is poured, wherein the construction process of the two-layer structure is the same as that of the first layer.
Wherein, overlap joint reinforcing bar 12 welding is reserved with the foundation beam to the vertical reinforcing bar of edge member, and edge member horizontal reinforcing bar and the horizontal reinforcing bar 9 welding of prefabricated wallboard, prefabricated wallboard vertical reinforcing bar do not pass the mortar layer, and pre-buried dowel bar passes the mortar layer during the assembly and gets into in the bellows of filling up the concrete in the bottom crossbeam.
Preferably, a cavity with enough thickness is reserved between the embedded corrugated pipe 7 at the bottom of the prefabricated wall board and the joint bars 8, so that the sleeve joint bars and grouting are more convenient and easier, and the concrete has enough strength.
Preferably, the diameter of the embedded dowel of the bottom cross beam is not smaller than 15mm, and is beneficial to about 20mm, so that the shear-resistant requirement is met. The design quantity of the single-row inserted bars 8 is determined according to the horizontal section height of the wallboard, and the applicable quantity of the commonly used 1800mm wall body width in the engineering is as follows: about 6; suitable number of 3600mm wall width: about 12; 5400mm wall width applicable quantity: about 18.
Preferably, the diameter of the vertical steel bar of the edge member is not less than 10mm, so that the edge member has certain bending and shearing resistance.
Preferably, the inserted bars 8 pre-embedded in the cast-in-place cross beams 4 on two or more layers finally penetrate through the cast-in-place floor layer and are inserted into the corrugated pipes in the prefabricated wall boards on the two layers; the prefabricated wallboard of first floor reserves vertical overlap joint reinforcing bar 10 and the ligature of two layers of cast-in-place crossbeam 4, and the overlap joint reinforcing bar 18 that the cast-in-place crossbeam of two layers reserved and the ligature of cast-in-place floor layer reinforcing bar.
The whole installation sequence of the building structure is as follows:
1) the method comprises the steps of ①, in the first floor, binding insertion bars 8 and reserved overlap steel bars 12 of a foundation beam with bottom beam reinforcing bars 11 according to the design positions, wherein the insertion bars 8 are arranged in a single row, maintaining until the beams meet the strength requirement as shown in figure 5, in the ② prefabricated wallboard, fixedly pouring corrugated pipes 7 into concrete according to the design positions as shown in figure 4, in the ③ assembling, filling the corrugated pipes with concrete, smearing mortar with the thickness of 20mm on the foundation beam 1, assembling the prefabricated wallboard 3 on the beam 1 according to the set positions, enabling the insertion bars 8 to be inserted into the corrugated pipes 7, in the ④, welding the bound vertical steel bars of edge members with the reserved overlap steel bars 12 of the foundation beam, welding the horizontal steel bars of the edge members with the horizontal steel bars 9 of the prefabricated wallboard (the longitudinal steel bars of the edge members need to reserve two layers of overlap steel bars), pouring the edge members 2 with concrete, maintaining until the specified strength is met, removing a formwork, in the ⑤, when the reserved first floor beam 4 is sealed, overlapping the steel bars of the first floor with the reserved slab 10, overlapping the slab 8 with the slab and the slab layer of the prefabricated wallboard, maintaining the slab, and finishing the building construction.
2) And a second floor, wherein ① is assembled, a mortar layer with the thickness of 20mm is coated at a set position above a cast-in-place floor layer 15, a second floor of prefabricated wall plate 14 is arranged at the set position, so that the dowel bars 8 correspond to the corrugated pipes 7 in the second floor of prefabricated wall plate 14, ② is used for binding the longitudinal steel bars in the second floor of edge member 2 with the reserved lap steel bars of the first floor of edge member, the transverse steel bars in the second floor of edge member 2 are bound with the transverse steel bars 9 of the prefabricated wall plate, ③ is used for pouring the concrete of the edge member 2, the formwork is removed after maintenance to a specified strength, the construction is the same as the construction of the floor when the structure ④ is closed, the ceramic tile roof supported by a truss structure additionally arranged at the top is constructed according to a conventional truss roof, the effects of water accumulation prevention and attractiveness are mainly achieved.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention are intended to fall within the scope of the present invention defined by the claims.

Claims (5)

1. A low-rise assembled building structure is characterized in that a wall structure comprises an edge member connected with a bottom cross beam steel bar, a prefabricated wallboard connected with the edge member steel bar and a mortar layer connecting the prefabricated wallboard and the bottom cross beam, the floor structure is divided into a prefabricated floor layer and a cast-in-place floor layer double-layer structure, wherein the edge member steel bar is built after the wallboard is assembled to a specified position, an inserted bar shear key is added between the prefabricated wallboard and the cross beam, the bottom cross beam pre-embedded vertical inserted bar is used for avoiding the insufficient shear strength caused by the lack of shear reinforcement due to the pure mortar connection between the middle prefabricated wallboard and the bottom cross beam, the inserted bar shear key is also pre-embedded when two or more cross beams are poured and penetrates through the cast-in-place floor layer to be inserted into the two layers of wallboards, the lap joint steel bar reserved on the first layer of wallboard is bound with the internal steel bar thereof and the lap joint steel bar bound with the cast-in-, when two layers and above crossbeams are poured, vertical joint bars are embedded in the designed positions, and the first layer structure is assembled on two layers and above wallboards.
2. The lap joint of cast-in-place floor slab reinforcing steel bars as claimed in claim 1, wherein the distributed reinforcing steel bars are bound with the reserved lap joint reinforcing steel bars of the two layers of cross beams, so that the prefabricated wall panel, the floor slab and the edge member form a reliable whole and are stressed together.
3. An edge member reinforcement according to claim 1, wherein the first layer of edge member reinforcement is provided with overlapping reinforcement welded to the second layer of edge member reinforcement.
4. A floor slab structure as claimed in claim 1, which is divided into a prefabricated floor slab and a cast-in-place floor slab, and the dowel bars embedded in the two or more layers of beams penetrate through the cast-in-place floor slab and are inserted into the corrugated pipes embedded in the two layers of prefabricated wall slabs.
5. The two-layer prefabricated wall panel of claim 1, wherein the assembly conditions are substantially the same as those of the first layer, the mortar layer, the edge members, the embedded shear keys for the tendons are arranged, and the assembly sequence is also the same.
CN201910675515.4A 2019-07-25 2019-07-25 Low-rise assembled building structure Pending CN110984359A (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111519757A (en) * 2020-04-16 2020-08-11 闫旺升 Assembled concrete building connection structure
CN113293856A (en) * 2021-06-07 2021-08-24 上海恪耐新材料科技有限公司 Construction method of fabricated building
CN115234069A (en) * 2022-07-06 2022-10-25 河南工业大学 Assembled grain horizontal warehouse
CN117449532A (en) * 2023-11-01 2024-01-26 山东联强建筑工业科技有限公司 Novel prefabricated hollow post connection structure of assembled

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CN211447322U (en) * 2019-06-18 2020-09-08 河北工程大学 Novel horizontal seam connection structure of assembled shear force wall

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CN204571002U (en) * 2014-12-29 2015-08-19 华北水利水电大学 A kind of formula that is vertically linked and packed concrete shear force wall of pre-buried bellows pore-forming
CN107574934A (en) * 2017-09-26 2018-01-12 中国二十二冶集团有限公司 Fabricated shear wall embedded sleeve barrel joint bar construction method
CN108035433A (en) * 2018-01-14 2018-05-15 万华集成房屋(烟台)有限公司 Prefabricated house is built and its method of construction
CN211447322U (en) * 2019-06-18 2020-09-08 河北工程大学 Novel horizontal seam connection structure of assembled shear force wall

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张军;侯海泉;董年才;龚俊杰;郭正兴;: "全预制装配整体式剪力墙住宅结构设计及应用" *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111519757A (en) * 2020-04-16 2020-08-11 闫旺升 Assembled concrete building connection structure
CN113293856A (en) * 2021-06-07 2021-08-24 上海恪耐新材料科技有限公司 Construction method of fabricated building
CN115234069A (en) * 2022-07-06 2022-10-25 河南工业大学 Assembled grain horizontal warehouse
CN117449532A (en) * 2023-11-01 2024-01-26 山东联强建筑工业科技有限公司 Novel prefabricated hollow post connection structure of assembled

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Application publication date: 20200410