CN105926820B - Construction method for precast beam steel support plate resistance mesh combined floor - Google Patents

Construction method for precast beam steel support plate resistance mesh combined floor Download PDF

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Publication number
CN105926820B
CN105926820B CN201610290894.1A CN201610290894A CN105926820B CN 105926820 B CN105926820 B CN 105926820B CN 201610290894 A CN201610290894 A CN 201610290894A CN 105926820 B CN105926820 B CN 105926820B
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prefabricated
steel
secondary beam
main beam
main
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CN105926820A (en
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陈方丽
倪海平
王旭
李勇
魏伟伟
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Taizhou Yuanxin Construction Engineering Co ltd
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Taizhou Yuanxin Construction Engineering Co ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E04B5/40Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs

Abstract

The invention provides a construction method of a precast beam steel support plate resistance mesh combined floor, belonging to the technical field of building engineering. It has solved the problem of current factory building floor construction period overlength. The construction method of the precast beam steel carrier plate resistance mesh combined floor comprises the following steps: step a, pouring a concrete column; b, mounting a prefabricated main beam; step c, mounting the prefabricated secondary beam; d, mounting a steel bearing plate; e, installing a reinforcing mesh; and f, pouring the floor. A prefabricated girder, prefabricated secondary beam, steel carrier plate and reinforcing bar net piece for erect are prefabricated component, and they all prefabricate at production place earlier, then transport and install on the job site, need not the backup pad in the installation and support, and plank sheathing convenient operation, the installation effectiveness is high, can shorten the man-hour of construction effectively on the basis of guaranteeing floor structural strength.

Description

Construction method for precast beam steel support plate resistance mesh combined floor
Technical Field
The invention belongs to the technical field of building engineering, and relates to a construction method of a precast beam steel carrier plate resistance mesh combined floor.
Background
Industrial plants, as their name implies, are houses used in industrial production processes. The industrial factory building comprises a workshop for production, and also comprises auxiliary buildings, such as factory dormitories, canteens, office buildings and other matched houses, which belong to the category of industrial factory buildings or are part of the industrial factory building. With the development of the industry, the rapid rise of industrial plants is a necessary trend of economic development. When an industrial factory building is built, because the floor area of the industrial factory building is large, a large amount of turnover materials such as steel pipes, wood templates and the like are needed, and when the wood templates are used as a supporting system, the construction period is very long.
With the development of science and technology, people generally adopt the steel carrier plate to build industrial factory building among the prior art. When the steel bearing plate is installed, two ends of the steel bearing plate can be respectively arranged on the secondary beam of a building in a spanning mode, and then concrete is poured on the pouring surface of the steel bearing plate. The existing steel bearing plate is directly installed when concrete is poured, so that the construction period is prolonged when the steel bearing plate is installed, and meanwhile, the stability between the steel bearing plates is insufficient. Therefore, for the technical personnel in the field, a construction method for the resistance mesh combination floor of the precast beam steel carrier plate is developed, so that the construction period of an industrial factory building can be shortened rapidly, and the structural strength and the structural stability of the floor of the industrial factory building can be ensured.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a construction method for a precast beam steel support plate resistance mesh combined floor, and aims to solve the technical problem that if the construction period of a floor building is shortened, the structural stability of the floor can be ensured.
The purpose of the invention can be realized by the following technical scheme: a construction method for a precast beam steel support plate resistance mesh combined floor is characterized by comprising the following steps:
step a, pouring a concrete column: casting a concrete column on the construction site in situ;
step b, mounting a prefabricated main beam: erecting two ends of a prefabricated main beam on a concrete column respectively;
step c, mounting the prefabricated secondary beam: respectively erecting two ends of the prefabricated secondary beam on a prefabricated main beam or a concrete column;
step d, mounting the steel bearing plate: erecting two ends of a steel bearing plate on a prefabricated secondary beam respectively;
step e, installing a reinforcing mesh: paving criss-cross steel bar meshes on the steel bearing plate;
step f, floor pouring: and pouring concrete on the steel bearing plate, and pouring the prefabricated main beam, the prefabricated secondary beam and the steel mesh into a whole to form a floor.
The concrete column poured in the construction method of the precast beam steel carrier plate resistance mesh combined floor serves as a bearing platform for supporting the precast beam, the precast beam is erected on the concrete column, the using amount of reinforcing steel bars used for supporting can be reduced, cost is saved, meanwhile, a larger underground space can be formed between the floor and a foundation through the concrete column, the space utilization rate is high, the precast main beam, the precast secondary beam, the steel carrier plate and the reinforcing steel mesh which are used for erecting are all prefabricated components which are prefabricated in a production place and then are transported to a construction site for installation, supporting structures such as wood formworks are not needed in the installation process for supporting, operation is convenient, and installation efficiency is high.
In the construction method of foretell precast beam steel carrier plate resistance mesh piece combination floor, precast main girder and prefabricated secondary beam are the superposed beam, and the top surface of precast main girder has a plurality of and exposes outside and along the girder stirrup that precast main girder length direction set gradually, and the top surface of prefabricated secondary beam has a plurality of and exposes outside and along the secondary beam stirrup that precast secondary beam length direction set gradually, in step e, still has the installation of reinforcing bar on the roof beam: the main beam stirrups are internally inserted with a plurality of main beam reinforcements arranged along the length direction of the prefabricated main beam, the secondary beam stirrups are internally inserted with a plurality of secondary beam main reinforcements arranged along the length direction of the prefabricated secondary beam, and the reinforcing mesh is fixedly connected to the secondary beam main reinforcements and the main beam reinforcements through metal wires. The composite beam is a beam in which concrete is poured twice in an assembled integral structure. The prefabricated beam is made in a prefabricated yard for the first time, the construction is carried out on the construction site for the second time, after the prefabricated floor slab is placed on the prefabricated beam, concrete on the upper portion of the beam is poured to enable the floor slab and the beam superposed beam, the main beam stirrups are located on a vertical plane and are arranged along the width direction of the prefabricated main beam, the secondary beam stirrups are located on the vertical plane and are arranged along the width direction of the prefabricated secondary beam, and the reinforcing mesh piece is connected into a whole through the main beam reinforcements, the secondary beam main reinforcements and the reinforcing mesh piece through metal wires, so that the assembly is more convenient and faster, and the structure is firmer.
In the construction method of the precast beam steel carrier plate resistance mesh combined floor, the steel carrier plate is a profiled steel bearing plate, the steel bearing plate comprises a plate body, the plate body forms a U-shaped through groove with a plurality of openings arranged upwards through a bending forming mode, the opening of the U-shaped through groove faces upwards, a gap with one opening arranged downwards is formed between every two adjacent U-shaped through grooves, the reinforcing mesh further comprises a plurality of plate bottom ribs, and in the step e, a reinforcing rib protective layer is further arranged: the bottom ribs of the plate are laid along the length direction of the U-shaped through grooves. The board end muscle is located the below of secondary beam owner muscle, and the board end muscle is used for further increasing the structural strength of steel carrier plate after pouring cement, still overlaps on the board end muscle to be equipped with the cushion, and the cushion can avoid board end muscle and steel carrier plate direct contact and cause the damage to the steel carrier plate.
In the construction method of the precast beam steel support plate resistance mesh combined floor, in the step d, the construction method further comprises the following steps: and the side edges of two adjacent steel bearing plates are vertically overlapped and then are fixedly connected through a fastener. Link firmly two adjacent profiled steel carrier plates through fasteners such as bolt, screw, the junction setting of profiled steel carrier plate leads to the top in the groove in the clearance, can improve the bulk strength of steel bearing plate junction, takes place to run thick liquid when can also avoiding concrete placement by the junction between two steel carrier plates simultaneously.
In the construction method of the precast beam steel carrier plate resistance mesh combined floor, in the step c, after the precast secondary beam is erected on the precast main beam, the top surfaces of the stirrups of the secondary beam are flush with the top surfaces of the stirrups of the main beam. The main reinforcements of the main girder and the main reinforcements of the secondary girder are inserted and the reinforcing mesh is laid, and the floor after pouring is smoother.
In the construction method of the precast beam steel deck resistance mesh combined floor, a cushion layer is laid between the step a and the step b: and paving a concrete cushion layer between the poured adjacent concrete columns. The concrete cushion can avoid the earth at the edge of the concrete column to slide, thereby improving the structural strength and stability of the floor.
In the construction method of the precast beam steel carrier plate resistance mesh combined floor, side formwork construction is further performed between the step c and the step d: and installing side forms outside the prefabricated main beam and the concrete column. The side forms can increase the structural strength of prefabricated girder and concrete column, and the alignment location and the installation of prefabricated secondary beam can still be convenient for simultaneously.
In the construction method of the precast beam steel carrier plate resistance mesh combined floor, steel mesh self-checking is further provided between the step e and the step f: and (5) checking the height of the reinforcing mesh sheets and the joints between the adjacent reinforcing mesh sheets. And (3) additionally arranging a reinforcement stirrup in an area where the reinforcement mesh sheets are too low, checking the connection strength between the adjacent reinforcement mesh sheets, and reinforcing the insufficient area by using a metal wire.
In the construction method of the precast beam steel carrier plate resistance mesh combined floor, in the step c, a steel bar support which protrudes outwards and is used for supporting the precast secondary beam is arranged on the side wall of the precast main beam, the end part of the precast secondary beam is provided with a connecting part which protrudes towards the outer side of the end part of the precast secondary beam along the length direction of the precast secondary beam, and when the connecting part is erected on the precast main beam, the bottom surface of the end part of the precast secondary beam is erected on the steel bar support. Further be connected through steel bar support between prefabricated secondary beam and the prefabricated girder, structural strength is higher.
In the construction method of the precast beam steel carrier plate resistance mesh combined floor, in the step a, the cast-in-place concrete columns are arranged in a rectangular array. The interval is roughly the same between each concrete column, is convenient for prefabricate the roof beam, steel carrier plate and the reinforcing bar net piece of follow-up erectting, saves the construction period of job site.
Compared with the prior art, the construction method has the following advantages:
1. the prefabricated main beam, the prefabricated secondary beam, the steel bearing plate and the steel bar net piece which are erected in the construction method are prefabricated components which are prefabricated in a production place and then transported to a construction site for installation, a supporting plate is not needed for supporting in the installation process, the wood formwork is convenient to operate, and the installation efficiency is high;
2. according to the construction method, the reinforcing mesh is high in structural strength by additionally arranging the bottom ribs of the plate, the main beam main ribs and the secondary beam main ribs.
Drawings
FIG. 1 is a construction flow chart of the present invention.
Fig. 2 is a schematic view of a connection structure of the prefabricated main beam and the prefabricated sub-beam in the invention.
FIG. 3 is a schematic view of the connection structure of the steel bearing plate and the steel mesh in the present invention.
In the figure, 1, a concrete column; 2. prefabricating a main beam; 3. prefabricating a secondary beam; 31. a connecting portion; 4. a steel deck; 41. a U-shaped through groove; 42. a clearance through groove; 5. reinforcing mesh sheets; 6. a main beam stirrup; 7. a secondary beam stirrup; 8. main girder main reinforcements; 9. a secondary beam main rib; 10. a plate bottom rib; 11. a steel bar support; 12. cushion blocks; 13. and (4) bolts.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1, a construction method for a precast beam steel support plate resistance mesh combined floor is characterized by comprising the following steps:
step a
1. Pouring a concrete column: a concrete column 1 is cast in place on a construction site;
2. laying a cushion layer: paving a concrete cushion layer between the poured adjacent concrete columns 1;
step b
Installing a prefabricated main beam: erecting two ends of a prefabricated main beam 2 on a concrete column 1 respectively, wherein the prefabricated main beam 2 is a superposed beam, and the top surface of the prefabricated main beam 2 is provided with a plurality of main beam stirrups 6 which are exposed outside and sequentially arranged along the length direction of the prefabricated main beam 2;
step c
1. Installing the prefabricated secondary beam: erecting two ends of a prefabricated secondary beam 3 on a prefabricated main beam 2 or a concrete column 1 respectively, wherein the prefabricated secondary beams 3 are all superposed beams, and the top surface of each prefabricated secondary beam 3 is provided with a plurality of secondary beam stirrups 7 which are exposed outside and sequentially arranged along the length direction of the prefabricated secondary beam 3;
2. side formwork construction: and side forms are arranged outside the prefabricated main beam 2 and the concrete column 1.
Step d
1. Installing a steel bearing plate: the method comprises the following steps that two ends of a steel bearing plate 4 are respectively erected on a prefabricated secondary beam 3, the steel bearing plate 4 is a profiled steel bearing plate 4, the steel bearing plate 4 comprises a plate body, a plurality of U-shaped through grooves 41 with upward openings are formed in the plate body in a bending forming mode, the openings of the U-shaped through grooves 41 face upward, and a gap through groove 42 with a downward opening is formed between every two adjacent U-shaped through grooves 41;
2. connecting the steel bearing plates: the side edges of two adjacent steel bearing plates 4 are vertically overlapped and then are fixedly connected through bolts 13;
step e
1. And (3) mounting the steel bars on the beam: inserting main girder reinforcements 8 into the main girder stirrups 6 along the length direction of the prefabricated main girder 2, and inserting secondary girder main reinforcements 9 into the secondary girder stirrups 7 along the length direction of the prefabricated secondary girder 3;
2. installing a bottom rib protective layer: the bottom plate ribs 10 are laid along the length direction of the U-shaped through groove 41, the bottom plate ribs 10 are positioned below the secondary beam main ribs 9, cushion blocks 12 are sleeved on the bottom plate ribs 10, and the bottom plate ribs 10 are positioned below the secondary beam main ribs 9;
3. installing a steel bar mesh: criss-cross steel bar mesh sheets 5 are laid on the steel bearing plate 4, the steel bar mesh sheets 5 are resistance mesh sheets prefabricated in a factory, and the steel bar mesh sheets 5 are erected on the secondary beam main ribs 9 and the main beam main ribs 8;
4. self-checking the steel bar mesh: inspecting the height of the steel mesh sheets 5 and the joints between the adjacent steel mesh sheets 5;
step f
And (3) floor pouring: and concrete is poured on the steel bearing plate 4, and the prefabricated main beam 2, the prefabricated secondary beam 3 and the reinforcing mesh 5 are poured into a whole to form a floor.
In this embodiment, the side wall of the prefabricated main beam 2 is provided with a steel bar support 11 protruding outwards and used for supporting the prefabricated secondary beam 3, the end part of the prefabricated secondary beam 3 is provided with a connecting part 31 protruding outwards along the length direction of the prefabricated secondary beam 3, and in step c of the construction method, when the connecting part 31 is erected on the prefabricated main beam 2, the bottom surface of the end part of the prefabricated secondary beam 3 is erected on the steel bar support 11.
In the construction method, in the step a, the cast-in-place concrete columns 1 are arranged in a rectangular array, the height of each concrete column 1 is 3-5 m, and after a concrete cushion is laid between the concrete columns 1, a wide underground space can be separated below the floor of a factory building.
In the step c of the construction method, after the prefabricated secondary beam 3 is erected on the prefabricated main beam 2, the top surface of the secondary beam stirrup 7 is flush with the top surface of the main beam stirrup 6, so that the main beam main reinforcement 8 and the secondary beam main reinforcement 9 can be inserted and the reinforcing mesh 5 can be laid, and the poured floor is smoother and firmer.
The construction method can shorten the construction working time of a construction site, accelerate the progress of construction engineering, and simultaneously ensure the structural strength and structural stability of the combined floor applied to an industrial factory building.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (5)

1. A construction method for a precast beam steel support plate resistance mesh combined floor is characterized by comprising the following steps:
step a, pouring a concrete column: concrete columns (1) arranged in a rectangular array are cast in situ on a construction site;
step b, mounting a prefabricated main beam: erecting two ends of a prefabricated main beam (2) on a concrete column (1) respectively;
step c, mounting the prefabricated secondary beam: the two ends of a prefabricated secondary beam (3) are respectively erected on a prefabricated main beam (2), the side wall of the prefabricated main beam (2) is provided with a steel bar support (11) which protrudes outwards and is used for supporting the prefabricated secondary beam (3), the end part of the prefabricated secondary beam (3) is provided with a connecting part which protrudes towards the outer side of the end part of the prefabricated secondary beam (3) along the length direction of the prefabricated secondary beam (3), when the connecting part is erected on the prefabricated main beam (2), the bottom surface of the end part of the prefabricated secondary beam (3) is erected on the steel bar support (11), the prefabricated main beam (2) and the prefabricated secondary beam (3) are both superposed beams, the top surface of the prefabricated main beam (2) is provided with a plurality of main beam stirrups (6) which are exposed outside and are sequentially arranged along the length direction of the prefabricated main beam (2), the top surface of the prefabricated secondary beam (3) is provided with a plurality of secondary beam stirrups (7) which are exposed outside and are sequentially arranged along the length direction, after the prefabricated secondary beam (3) is erected on the prefabricated main beam (2), the top surface of the secondary beam stirrup (7) is flush with the top surface of the main beam stirrup (6), and side forms are installed outside the prefabricated main beam (2) and the concrete column (1);
step d, mounting the steel bearing plate: two ends of the steel bearing plate (4) are respectively erected on a prefabricated secondary beam (3);
step e, installing a reinforcing mesh: the method comprises the following steps that criss-cross steel bar net pieces (5) are laid on a steel bearing plate (4), a plurality of main beam main reinforcements (8) arranged along the length direction of a prefabricated main beam (2) are inserted into main beam stirrups (6), a plurality of secondary beam main reinforcements (9) arranged along the length direction of a prefabricated secondary beam (3) are inserted into secondary beam stirrups (7), and the steel bar net pieces (5) are fixedly connected to the secondary beam main reinforcements (9) and the main beam main reinforcements (8) through metal wires;
step f, floor pouring: concrete is poured on the steel bearing plate (4), and the prefabricated main beam (2), the prefabricated secondary beam (3) and the steel mesh (5) are poured into a whole to form a floor.
2. The construction method of precast beam steel carrier plate resistance mesh combination floor according to claim 1, characterized in that the steel carrier plate (4) is a profiled steel carrier plate (4), the steel carrier plate (4) comprises a plate body, the plate body forms a plurality of U-shaped through grooves (41) with upward openings by bending, the openings of the U-shaped through grooves (41) face upward, a gap through groove (42) with downward opening is formed between every two adjacent U-shaped through grooves (41), and in step e, a bottom rib protection layer is further provided: the bottom ribs (10) of the plate are laid along the length direction of the U-shaped through groove (41).
3. The construction method of precast beam steel deck resistance mesh combination floor according to claim 2, characterized in that in step d, there is further provided a step of connecting the steel deck: the side edges of two adjacent steel bearing plates (4) are vertically overlapped and then are fixedly connected through a fastener.
4. The construction method for the precast beam steel deck electric resistance mesh panel combined floor as claimed in claim 1, 2 or 3, is characterized in that between the step a and the step b, there is further provided a laying cushion layer: and paving a concrete cushion layer between the poured adjacent concrete columns (1).
5. The construction method for the precast beam steel deck resistance mesh combination floor according to claim 1, 2 or 3, characterized in that between the step e and the step f, a steel mesh self-check is further provided: and (3) inspecting the height of the steel bar meshes (5) and the joints between the adjacent steel bar meshes (5).
CN201610290894.1A 2016-05-03 2016-05-03 Construction method for precast beam steel support plate resistance mesh combined floor Active CN105926820B (en)

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CN107762065A (en) * 2017-10-16 2018-03-06 杭萧钢构(安徽)有限公司 A kind of flooring steel beam structure and floor steel beam construction method
CN113897999B (en) * 2021-11-03 2022-10-14 中建四局建设发展有限公司 Construction method for constructing elevator foundation structure on subway upper cover project

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CN202031215U (en) * 2010-05-06 2011-11-09 北京建筑工程学院 Combined floor of bar-mat reinforcement sheets and profiled steel sheets by adopting spot welding
CN105040829B (en) * 2015-06-26 2017-11-03 南京长江都市建筑设计股份有限公司 A kind of precast concrete primary-secondary beam attachment structure and its construction method
CN204876255U (en) * 2015-08-19 2015-12-16 台州远信建设工程有限公司 A resistance net piece for building industry factory building usefulness
CN204876256U (en) * 2015-08-19 2015-12-16 台州远信建设工程有限公司 Steel carrier plate for building

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