CN115324340A - Construction method of prefabricated composite floor slab - Google Patents

Construction method of prefabricated composite floor slab Download PDF

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Publication number
CN115324340A
CN115324340A CN202211007052.2A CN202211007052A CN115324340A CN 115324340 A CN115324340 A CN 115324340A CN 202211007052 A CN202211007052 A CN 202211007052A CN 115324340 A CN115324340 A CN 115324340A
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CN
China
Prior art keywords
composite floor
floor slab
construction method
point
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211007052.2A
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Chinese (zh)
Inventor
王岩鹏
王小龙
易根和
米艳艳
刘新中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Jiasheng Residential Construction Technology Co ltd
Original Assignee
Hunan Jiasheng Residential Construction Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Jiasheng Residential Construction Technology Co ltd filed Critical Hunan Jiasheng Residential Construction Technology Co ltd
Priority to CN202211007052.2A priority Critical patent/CN115324340A/en
Publication of CN115324340A publication Critical patent/CN115324340A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
    • E04C2/50—Self-supporting slabs specially adapted for making floors ceilings, or roofs, e.g. able to be loaded
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/167—Tools or apparatus specially adapted for working-up plates, panels or slab shaped building elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/16—Tools or apparatus
    • E04G21/18—Adjusting tools; Templates

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The invention provides a construction method of a prefabricated composite floor slab, which comprises the following steps: respectively forming at least one first hoisting point on two steel beams of the main steel structure member, which are positioned on the upper layer; laying the composite floor slab on a steel beam of the main steel structure member, wherein the composite floor slab is provided with at least two second hoisting points; connecting the first lifting point and the second lifting point by using a connecting piece; and (5) pouring concrete. The construction method of the prefabricated composite floor slab realizes the suspension type support of the prefabricated composite floor slab through the connecting piece, ensures the rigidity of the prefabricated composite floor slab in the construction stage, and simultaneously can realize the multi-layer synchronous construction of the composite floor slab to achieve the aim of saving the construction period.

Description

Construction method of prefabricated composite floor slab
Technical Field
The invention relates to the technical field of construction of building structure engineering, in particular to a construction method of a prefabricated composite floor slab.
Background
Need set up steel bar truss in the coincide floor, when the whole or local span of structure is great, for economic nature, construction convenience, can't realize the coincide floor through improving arrangement of reinforcement, thick and only lean on self to bear the load of construction stage. Traditional prefabricated coincide floor need set up bearing structure in the bottom when the construction, because bearing structure need pour the completion and reach just can set up after predicting intensity at lower floor, sets up bearing structure itself simultaneously and also need a certain time, leads to the rapid construction of the floor of accomplishing unable.
Disclosure of Invention
The invention aims to provide a construction method of a prefabricated composite floor slab, which can save the construction period.
Particularly, the invention provides a construction method of a prefabricated composite floor slab, which comprises the following steps:
respectively forming at least one first hoisting point on two steel beams of the main steel structure member, which are positioned on the upper layer;
laying a composite floor slab on two steel beams of the main steel structure member positioned on the lower layer, wherein the composite floor slab is provided with at least two second hoisting points;
connecting the first hoisting point and the second hoisting point by using a connecting piece;
and (5) pouring concrete.
Optionally, the step of forming at least one first lifting point on each of the two steel beams of the main steel structural member located at the upper layer includes:
when the main steel structure member is deepened, an embedded part is arranged at the bottom of the steel beam positioned on the upper layer to form a first lifting point.
Optionally, the embedded part and the steel beam are welded or detachably fixed.
Optionally, the second suspension points are formed on trusses of composite floor slabs.
Optionally, the second suspension point is formed at a third point in the span direction of the composite floor slab.
Optionally, the connector is a steel cable.
Optionally, one end of the steel wire rope close to the composite floor slab is provided with a turn buckle, and the step of connecting the first hoisting point and the second hoisting point by using the connecting member further includes:
the levelness of the composite floor slab is ensured by adjusting the tightness of the steel wire rope through the turn buckle.
Optionally, the second lifting point is located such that an angle between the steel wire rope and the composite floor slab near the first lifting point is 45-60 degrees.
Optionally, each first hoisting point is connected one-to-one with at least two second hoisting points located on the same side as the first hoisting point by means of at least two wire ropes.
Optionally, the step of pouring concrete is further followed by: and after the concrete reaches the designed strength, removing the connecting piece.
According to the construction method of the prefabricated composite floor slab, at least one first lifting point is formed on each of the two steel beams of the main steel structure member positioned on the upper layer, the composite floor slab is provided with at least two second lifting points, the first lifting points and the second lifting points are connected through the connecting pieces, and then concrete is poured, so that the prefabricated composite floor slab is suspended and supported through the connecting pieces, the rigidity of the prefabricated composite floor slab in the construction stage is guaranteed, meanwhile, the construction method can achieve multi-layer synchronous construction of the composite floor slab, and the purpose of saving the construction period is achieved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:
fig. 1 is a schematic flow chart illustrating a construction method of prefabricated composite floor slabs according to an embodiment of the present invention.
FIG. 2 is a schematic side view of the construction method of FIG. 1 at the time of construction.
Fig. 3 is a partially enlarged schematic view of fig. 2.
Fig. 4 is a schematic plan view of the construction method of fig. 1 at the time of construction.
Detailed Description
Fig. 1 is a schematic flow chart illustrating a construction method of a prefabricated composite floor slab 100 according to an embodiment of the present invention. FIG. 2 is a schematic side view of the construction method of FIG. 1 during construction. Fig. 3 is a partially enlarged schematic view of fig. 2. Fig. 4 is a schematic plan view of the construction method of fig. 1 at the time of construction.
Referring to fig. 1, a method for constructing a prefabricated composite floor slab 100 according to an embodiment of the present invention is shown. The construction method comprises the following steps:
s102: at least one first hanging point 230 is formed on each of the two steel beams 201 of the main steel structural member located at the upper layer;
s104: laying the composite floor slab 100 on the two steel beams 202 of the main steel structure member at the lower layer, wherein the composite floor slab 100 is provided with at least two second hoisting points 110;
s106: connecting the first and second lifting points 230 and 110 with a connector 300;
s108: and (5) pouring concrete.
The construction method of the prefabricated composite floor 100 provided by the embodiment of the invention is mainly applied to steel structure construction adopting the prefabricated composite floor 100, the construction method is characterized in that at least two first lifting points 230 are formed on the steel beam 201 of the main steel structure member positioned on the upper layer, the composite floor 100 is provided with at least two second lifting points 110, concrete is poured after the first lifting points 230 and the second lifting points 110 are connected by using the connecting piece 300, so that the prefabricated composite floor 100 is suspended and supported by the connecting piece 300, the rigidity of the prefabricated composite floor at the construction stage is ensured, the existing scaffold supporting structure is not required to be arranged, meanwhile, the construction method can realize multi-layer synchronous construction of the composite floor 100, and the purpose of saving the construction period is achieved.
Herein, steel beam 201 "on top" only means a steel beam relatively further up in construction, and steel beam 202 "on bottom" only means a steel beam relatively further down in construction. It will be appreciated that the first lifting point 230 may be formed on any steel beam of the main steel structural member.
As shown in fig. 2 and 3, in some embodiments, step S102 includes: when deepening the main steel structural member, the embedment 203 is provided at the bottom of the steel beam 201 positioned at the upper layer to form the first hoisting point 230. The embedded part 203 is fixedly welded or detachably fixed with the steel beam 201. The removable fixing of the embedment 203 to the steel beam 201 may be, for example, by bolting. When the embedded part 203 and the steel beam 201 are welded and fixed, after pouring is finished, the embedded part 203 is cut off; when the embedded part 203 and the steel beam 201 are detachably fixed, after pouring is completed, the embedded part 203 is only required to be detached.
In the construction method of the prefabricated composite floor slab 100 according to the embodiment of the present invention, the connecting member 300 may be a steel wire rope 300. In step S104, after the main steel structural member is installed, the composite floor slab 100 is laid on the steel beam 202 of the main steel structural member located at the lower layer by the crane. After the floor 100 is installed in place, the worker disengages from the hook of the crane and connects both ends of the wire rope 300 to the first and second hoisting points 230 and 110, respectively, to provide a pulling force. The laminated floor 100 is supported by the steel beams 202 located at the lower layer and the tensile force of the wire ropes 300.
The second lifting points 110 may be formed on the girders 101 of the laminated floor slab 100. The second lifting point 110 may be formed by directly using a suitable position of the steel bar of the truss 101, or by additionally providing a lifting ring at a suitable position of the steel bar of the truss 101. The number of the second suspension points 110 may be determined according to the plate width. For example, in an application, a 4.4m span floor 100 typically requires four second lifting points 110 to be provided on the floor 100, as shown in fig. 4. In some embodiments, the second lifting point 110 is formed at a third point in the span direction of the laminated floor slab 100. The closer the second lifting point 110 is to the panel edge, the less efficient it is, so the second lifting point 110 is preferably located at the third point of the panel span.
As shown in fig. 3, the step S106 of connecting the first hoisting point 230 and the second hoisting point 110 by using the connector 300 further comprises: the tightness of the steel wire rope 300 is adjusted by the turn buckle 301 to ensure the levelness of the composite floor slab 100. Through setting up turn buckle 301, can adjust wire rope 300 elasticity, and then guarantee coincide floor 100's levelness. In view of cost and construction period, the construction method provided by the embodiment of the invention adopts the turn-buckle bolt 301 and the steel wire rope 300, and is far superior to the traditional methods of scaffold and batten support.
With continued reference to figure 3, in some embodiments the second lifting point 110 is positioned such that the angle α between the cable 300 and the composite floor slab 100 adjacent to the first lifting point 230 is between 45 and 60 degrees. The larger the angle α between the steel cable 300 and the composite floor slab 100 close to the first hoisting point 230, the higher the provided tension, and the smaller the specification of the steel cable 300, so the angle α is not less than 45 degrees.
To further improve efficiency by reducing the number of wire ropes 300 used, each first hoisting point 230 connects at least two second hoisting points 110 located on the same side as the first hoisting point 230 one by one with at least two wire ropes 300. As shown in fig. 4, each first lifting point 230 is connected to two second lifting points 110 located on the same side of the first lifting point 230 by means of two wire ropes 300. It will be appreciated that the first lifting point 230 of the steel beam 201 may be common to both the left and right composite floor slabs 100 when the steel beam 201 is in a non-edgewise intermediate position.
After step S108, the construction method according to the embodiment of the present invention further includes: when the concrete reaches the designed strength, the connector 300 is removed.
According to the construction method of the prefabricated composite floor slab 100, at least one first lifting point 230 is formed on each of the two steel beams 201 of the main steel structural member, the two steel beams are located on the upper layer, the composite floor slab 100 is provided with at least two second lifting points 110, the first lifting points 230 and the second lifting points 110 are connected through the connecting pieces 300, then concrete is poured, so that the prefabricated composite floor slab 100 is suspended and supported through the connecting pieces 300, the rigidity of the prefabricated composite floor slab 100 in the construction stage is guaranteed, an existing scaffold supporting structure is not required to be arranged, meanwhile, the construction method can achieve multi-layer synchronous construction of the composite floor slab 100, and the purpose of saving the construction period is achieved.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A construction method of a prefabricated composite floor slab comprises the following steps:
respectively forming at least one first hoisting point on two steel beams of the main steel structure member positioned on the upper layer;
laying the composite floor slab on two steel beams of the main steel structure member at the lower layer, wherein the composite floor slab is provided with at least two second hoisting points;
connecting the first lifting point and the second lifting point by using a connecting piece;
and (5) pouring concrete.
2. The construction method according to claim 1, wherein the step of forming at least one first lifting point on each of the two steel girders of the main steel structural member located at the upper level comprises:
when the main steel structure member is deepened, an embedded part is arranged at the bottom of the steel beam positioned on the upper layer to form the first lifting point.
3. The construction method according to claim 2,
the embedded part and the steel beam are welded and fixed or detachably fixed.
4. The construction method according to claim 1,
the second hoisting point is formed on the truss of the composite floor slab.
5. The construction method according to claim 1,
the second lifting point is formed at a third point in the span direction of the composite floor slab.
6. The construction method according to claim 1,
the connecting piece is a steel wire rope.
7. The construction method according to claim 6, wherein a basket bolt is provided at one end of the wire rope close to the composite floor slab, and the step of connecting the first hoisting point and the second hoisting point by using a connector further comprises the following steps:
the tightness of the steel wire rope is adjusted through the turn buckle so as to ensure the levelness of the composite floor slab.
8. The construction method according to claim 6,
and the position of the second lifting point meets the condition that the included angle between the steel wire rope and the composite floor slab close to one side of the first lifting point is 45-60 degrees.
9. The construction method according to claim 6,
and each first hoisting point is connected with at least two second hoisting points which are positioned on the same side with the first hoisting point one by utilizing at least two steel wire ropes.
10. The construction method of claim 1, wherein the step of casting concrete is further followed by:
and when the concrete reaches the designed strength, removing the connecting piece.
CN202211007052.2A 2022-08-22 2022-08-22 Construction method of prefabricated composite floor slab Pending CN115324340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211007052.2A CN115324340A (en) 2022-08-22 2022-08-22 Construction method of prefabricated composite floor slab

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Application Number Priority Date Filing Date Title
CN202211007052.2A CN115324340A (en) 2022-08-22 2022-08-22 Construction method of prefabricated composite floor slab

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CN115324340A true CN115324340A (en) 2022-11-11

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210067484U (en) * 2019-05-21 2020-02-14 中建二局广东建设基地有限公司 Device for preventing steel bar truss floor support plate from being downwarped
US20210040741A1 (en) * 2018-12-12 2021-02-11 Dalian University Of Technology Design and Rapid Construction Method for Flush Assembly of the Prefabricated Steel Beam and the Floor Slab
CN213231189U (en) * 2020-09-08 2021-05-18 中建二局第一建筑工程有限公司 Prefabricated floor hoisting structure
CN113279582A (en) * 2021-06-10 2021-08-20 浙江久筑建筑技术有限公司 Hanging construction method for overhanging and hanging type cast-in-place plate
CN215564638U (en) * 2021-05-24 2022-01-18 中建八局西南建设工程有限公司 Steel construction net mounting structure of choosing outward

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210040741A1 (en) * 2018-12-12 2021-02-11 Dalian University Of Technology Design and Rapid Construction Method for Flush Assembly of the Prefabricated Steel Beam and the Floor Slab
CN210067484U (en) * 2019-05-21 2020-02-14 中建二局广东建设基地有限公司 Device for preventing steel bar truss floor support plate from being downwarped
CN213231189U (en) * 2020-09-08 2021-05-18 中建二局第一建筑工程有限公司 Prefabricated floor hoisting structure
CN215564638U (en) * 2021-05-24 2022-01-18 中建八局西南建设工程有限公司 Steel construction net mounting structure of choosing outward
CN113279582A (en) * 2021-06-10 2021-08-20 浙江久筑建筑技术有限公司 Hanging construction method for overhanging and hanging type cast-in-place plate

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