CN108678165B - Construction method of cross-layer floor - Google Patents
Construction method of cross-layer floor Download PDFInfo
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- CN108678165B CN108678165B CN201810739102.3A CN201810739102A CN108678165B CN 108678165 B CN108678165 B CN 108678165B CN 201810739102 A CN201810739102 A CN 201810739102A CN 108678165 B CN108678165 B CN 108678165B
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- node core
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- 238000010276 construction Methods 0.000 title abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000009417 prefabrication Methods 0.000 abstract description 6
- 230000002457 bidirectional effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
-
- 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
- E04B2001/0053—Buildings characterised by their shape or layout grid
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a construction method of a cross-layer floor, which comprises the following steps: prefabricating segment columns, a frame girder and ribbed plates, wherein the segment columns comprise an upper layer column, a node core area and a lower layer column; installing the segment column; mounting the frame girders to the node core area and the upper column top; mounting the ribbed plate to the frame main beam; pouring a node core area; and paving the superposed layers on the main girder of the frame, the top surface of the prefabricated ribbed plate and the top surface of the concrete to form a cross-layer floor. The construction of a cross-layer floor is realized by adopting a prefabrication assembly technology, all prefabricated components are produced in a prefabrication factory, and the mould is unified and convenient to construct; compared with the traditional construction process of cast-in-place concrete, the quality and construction efficiency are improved, and the dependence on manpower is reduced. Each prefabricated part is reliably connected through post-cast concrete to form a bidirectional frame and a rigid beam column node; the adoption of the superposed layers enables the whole floor to form a whole, and the invention is beneficial to popularization and application of assembly type technology.
Description
Technical Field
The invention relates to the field of buildings, in particular to a construction method of a cross-layer floor.
Background
Currently, traditional buildings are generally constructed using cast-in-place concrete structures. In the cast-in-situ process, the quality of the construction engineering and the construction progress are greatly influenced by site conditions, a large number of templates and bracket engineering are needed, the construction efficiency is low, and the quantity and the proficiency degree of labor force are extremely dependent.
According to the domestic 'equivalent cast-in-situ' design concept, the prefabricated components generally need to be provided with extension steel bars and are connected together through post-cast concrete so as to achieve the purposes of beam column rigid connection, bidirectional frames and integral floors. However, after the frame column is prefabricated in a cross-layer manner, the frame column is difficult to ensure stable combination with the frame main beam, and the frame node generally cannot meet the requirement of 'equivalent cast-in-situ'.
Therefore, it is highly desirable to provide a method for constructing a cross-floor, so as to solve the problem in the prior art that the cross-floor support column and the frame girder are difficult to firmly combine and the floor integrity is poor.
Disclosure of Invention
The invention aims to provide a construction method of a cross-layer floor, which aims to solve the problems that a cross-layer floor support column and a frame main beam are difficult to firmly combine and the floor integrity is poor in the prior art.
In order to solve the problems in the prior art, the invention provides a construction method of a cross-layer floor, which is characterized by comprising the following steps:
s1: prefabricating segment columns, a frame girder and ribbed plates, wherein the segment columns comprise an upper layer column, a node core area and a lower layer column;
S2: installing the segment column;
s3: mounting the frame girders to the node core area and the upper column top;
s4: mounting the ribbed plate to the frame main beam;
s5: pouring a node core area;
S6: and paving the superposed layers on the main girder of the frame, the top surface of the prefabricated ribbed plate and the top surface of the concrete to form a cross-layer floor.
Optionally, in the method of constructing a cross-storey floor, the frame girders, the prefabricated ribbed slabs and the section columns are connected at the node core area.
Optionally, in the building method of the cross-storey floor, a lug is arranged on the side edge of the frame girder, and a groove is arranged at the end part of the frame girder.
Optionally, in the method for constructing a cross-floor, the ribbed partial rib foot ends are mounted on the main girder lugs of the frame.
Optionally, in the building method of the cross-floor, holes are formed in rib feet aligned to the node core area on the ribbed plates, and movable steel bars are arranged in the holes.
Optionally, in the building method of the cross-storey floor, the node core area comprises at least three groups of movable stirrups, and the movable stirrups are arranged on the section column connecting steel bars.
Optionally, in the building method of a cross-floor, after S4 is executed, before S5, the method further includes the following steps:
Concentrating all the movable stirrups on the top of the node core area; moving the lowest group of movable stirrups to the bottom of the node core area, and placing the frame girder connecting steel bars in grooves at the end parts of the frame girders through the node core area, wherein the frame girder connecting steel bars are arranged on the upper layer of the lowest group of movable stirrups; then moving the middle group of movable stirrups to the upper layer of the frame girder connecting steel bars, and moving the movable steel bars to pass through the node core area and penetrate into holes of the opposite rib feet, wherein the movable steel bars are arranged on the middle group of movable stirrups; finally, the uppermost group of movable stirrups are moved to the upper layer of the movable steel bars; filling the holes by grouting.
Optionally, in the method of constructing a cross-storey floor, at least two section columns carry one frame main beam.
Optionally, in the method for constructing a cross-storey floor, brackets are arranged on tops of the upper-storey column and the lower-storey column.
Optionally, in the method for building a cross-floor, the frame girder and the top surface of the ribbed plate are arranged with stirrups with equal intervals, and the stirrups protrude out of the top surface and extend into the laminated layer.
In the method for constructing the cross-layer storey, provided by the invention, the storey is constructed by adopting a prefabrication assembly technology, the ribbed plate, the girder of the frame and the segmental columns are produced in a prefabrication factory, and the mould is unified and convenient to construct. Compared with the traditional construction process of cast-in-place concrete, the quality is improved, the construction efficiency is improved, and the dependence on manpower is reduced. The invention can fully play the advantages of the prefabricated section column and the ribbed plate, reduce the hoisting times of the support column and improve the construction efficiency. The beam-column connection mode in the invention is reliably connected through post-cast concrete to form a bidirectional frame and a rigid beam-column node; through the superimposed layer, the whole floor can be formed into a whole, which is beneficial to the popularization and application of the assembly type technology under the current technical conditions.
Drawings
FIG. 1 is a floor plan provided by an embodiment of the present invention;
FIG. 2 is a top view of a beam column node core area provided by an embodiment of the present invention;
FIG. 3 is a side view of a beam column node core area provided by an embodiment of the present invention;
FIG. 4 is a block diagram of a prefabricated part according to an embodiment of the present invention;
FIG. 5 is a schematic view of a segment column according to an embodiment of the present invention;
FIG. 6 is a schematic view of a ribbed plate according to an embodiment of the present invention;
Wherein, 1-the ribbed plate; 11-rib feet with connecting reinforcing steel bars; 12-connecting-free reinforcing rib feet; 13-movable steel bars; 14-holes; 15-top stirrups with rib plates; 2-a frame girder; 21-picking up ears; 22-grooves; 23-connecting the frame girder with reinforcing steel bars; 24-frame girder top stirrups; 3-section column; 31-upper column; 32-lower column; 33-segment column connecting bars; 34-corbels; 35-movable stirrups; a 5-node core region; 6-laminating layer.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to the drawings. Advantages and features of the invention will become more apparent from the following description and claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
Referring to fig. 1 to 6, fig. 1 is a floor plan according to an embodiment of the present invention; FIG. 2 is a top view of a beam column node core area provided by an embodiment of the present invention; FIG. 3 is a side view of a beam column node core area provided by an embodiment of the present invention; FIG. 4 is a block diagram of a prefabricated part according to an embodiment of the present invention; FIG. 5 is a schematic view of a segment column according to an embodiment of the present invention; fig. 6 is a schematic view of a ribbed plate according to an embodiment of the present invention.
The invention provides a construction method of a cross-layer floor, which comprises the following steps:
S1: the method comprises the steps of prefabricating a segment column 3, a frame girder 2 and a ribbed plate 1, wherein the segment column 3 comprises an upper layer column 31, a node core area 5 and a lower layer column 32;
s2: installing the segment columns 3;
s3: mounting the frame main beams 2 to the node core area 5 and the top of the upper layer column 31;
S4: mounting the ribbed plate 1 to the frame main beam 2;
S5: pouring a node core area 5;
S6: and paving the superposed layers 6 on the top surfaces of the frame girder 2, the prefabricated ribbed plates 1 and the concrete to form a cross-layer floor.
In the construction method of the cross-storey provided by the invention, the frame girder 2, the prefabricated ribbed slab 1 and the segmental columns 3 are connected at the node core area 5 of the segmental columns 3.
Referring to fig. 4, a lug 21 is provided on a side of the frame girder 2 for supporting the ribbed plate 1, a groove 22 is provided at an end of the frame girder 2 for placing a frame girder connection bar 23, and the lug 21 and the groove 22 are parallel to the frame girder 2; the top of the frame girder 2 is provided with frame girder top surface stirrups 24, the frame girder top surface stirrups 24 are arranged along a certain interval, and extend into the superposed layer 6, so that the whole storey forms a whole. Further, the frame main beam 2 is mounted at the end on top of the node core area 5 or the upper column 31 to form a frame of each storey.
Referring to fig. 1 and 4, the prefabricated ribbed slab 1 includes a prefabricated slab and rib feet integrally prefabricated with the prefabricated slab, a part of the rib feet are aligned with the node core area 5, holes 14 are formed in the rib feet aligned with the node core area 5, movable steel bars 13 are arranged in the holes 14, and the rib feet provided with the movable steel bars 13 are called as rib feet with connecting steel bars 11, and conversely called as rib feet without connecting steel bars 12; furthermore, the ends of the non-connecting reinforcing steel rib feet 12 are placed on the lugs 21 of the frame main beam 2, so that the ribbed plate 1 takes the frame main beam 2 as a frame, can be spliced into an integral plate in a seamless way, and is used for forming floors to support; the top of the ribbed plate 1 is provided with ribbed plate top stirrups 15, and the ribbed plate top stirrups 15 are arranged at certain intervals and extend into the laminated layer 6, so that the whole floor can be formed into a whole.
Referring next to fig. 5, the prefabricated segment column 3 includes an upper layer column 31, a node core region 5, and a lower layer column 32; brackets 34 are arranged at the top ends of the upper layer column 31 and the lower layer column 32 and close to the node core area 5 and used for placing the frame girder 2 of the layer, longitudinal segment column connecting steel bars 33 are arranged at the node core area 5 and are communicated, and reinforcing steel bars are arranged at the same time so as to ensure overturning and hoisting; the joint core area 5 also comprises at least three groups of horizontal movable stirrups 35, wherein the movable stirrups 35 are arranged on the segment column connecting steel bars 33 and are used for fixing the steel bars penetrating into the joint core area 5. Typically, at least two segment columns 3 carry one frame girder 2, and if the frame girder 2 spans a relatively long length, a plurality of the segment columns 3 may be required.
In the invention, the ribbed plate 1 comprises a double T-shaped plate, a ribbed plate and a single T-shaped plate, as shown in fig. 6, the ribbed plates 1 comprise precast slabs and rib feet integrally precast with the precast slabs, the precast slabs are tightly spliced and supported by the rib feet and placed on the main girder 2 of the frame to form a base layer of the floor.
Embodiment one: the ribbed plate 1 adopts a double T plate, and the method is as follows:
as shown in fig. 2 and 3, the segment columns 3 are installed first, and all the movable stirrups 35 are concentrated at the top of the node core area 5; the frame main beam 2 is then placed on the segment column 3 column brackets 34 and the double T plate is placed on the lugs 21 of the frame main beam 2. The grooves 22 of the frame girder 2 are used for placing the frame girder connecting reinforcements 23, moving the lowest group of movable stirrups 35 to the bottom of the node core area 5, and the frame girder connecting reinforcements 23 penetrate through the node core area 5, are placed in the grooves 22 at the end parts of the frame girder 2 and are arranged on the upper layer of the lowest group of movable stirrups 35; then moving the middle group of movable stirrups 35 to the upper layer of the frame girder connecting steel bars 23, moving the movable steel bars 13 to pass through the node core area 5 and penetrate into the holes 14 of the opposite rib feet, wherein the movable steel bars 13 are arranged on the upper layer of the middle group of movable stirrups 35; finally, the uppermost group of movable stirrups 35 are moved to the upper layer of the movable steel bars 13; grouting and compaction are carried out in the holes 14, and concrete is cast in situ in the node core area 5. Whereby the construction of the node core area 5 is completed.
Further, the frame girder top stirrup 24 and the ribbed plate top stirrup 15 are bound. As shown in fig. 4, the frame girder top stirrups 24 and the ribbed plate top stirrups 15 are arranged in a row with equal intervals, the stirrups protrude out of the top surface, the laminated layer 6 is poured with concrete, and the frame girder top stirrups 24 and the ribbed plate top stirrups 15 extend into the laminated layer 6. So that the beam-column rigid connection, the bidirectional frame and the integral floor are formed.
Embodiment two: the ribbed plate 1 adopts a single T plate or a ribbed plate:
The connection of the ribbed plate 1, the frame girder 2 and the segment column 3 is the same as the first embodiment. The ribbed plate 1 adopts a prefabricated single T plate or a prefabricated ribbed plate, wherein rib feet of the prefabricated single T plate or the prefabricated ribbed plate are divided into rib feet 11 containing connecting reinforcing steel bars and rib feet 12 without connecting reinforcing steel bars, and the rib feet 11 containing the connecting reinforcing steel bars are used as frame beams and are arranged in a centering alignment with the section columns 3 and the node core area 5; the ends of the rib feet 12 without the connecting reinforcing steel bars are not provided with ribs and are placed on the lugs 21 on the side edges of the frame girder 2; the end part of the rib foot 11 containing the connecting steel bar is reserved with a hole 14, and the connecting steel bar is arranged in the hole 14. The node core area 5 and the lamination layer 6 are constructed in the same way
Embodiment one.
In summary, in the method for constructing the cross-floor storey provided by the invention, the storey construction is realized by adopting the prefabrication assembly technology, the ribbed plate, the main girder of the frame and the segmental columns are produced in a prefabrication factory, and the mould is unified and convenient to construct. Compared with the traditional construction process of cast-in-place concrete, the quality is improved, the construction efficiency is improved, and the dependence on manpower is reduced. The invention can fully play the advantages of the prefabricated section column and the ribbed plate, reduce the hoisting times of the support column and improve the construction efficiency. The beam-column connection mode in the invention is reliably connected through post-cast concrete to form a bidirectional frame and a rigid beam-column node; through the superimposed layer, the whole floor can be formed into a whole, which is beneficial to the popularization and application of the assembly type technology under the current technical conditions.
The foregoing is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any person skilled in the art will make any equivalent substitution or modification to the technical solution and technical content disclosed in the invention without departing from the scope of the technical solution of the invention, and the technical solution of the invention is not departing from the scope of the invention.
Claims (6)
1. A method of constructing a cross-floor, the method comprising the steps of:
S1: prefabricating segment columns, a frame girder and ribbed plates, wherein the segment columns comprise an upper layer column, a node core area and a lower layer column; the side edge of the frame girder is provided with a picking lug, and the end part of the frame girder is provided with a groove;
S2: installing the segment column;
s3: mounting the frame girders to the node core area and the upper column top;
s4: mounting the ribbed plate to the frame main beam; holes are formed in rib feet aligned with the node core area on the ribbed plates, and movable reinforcing steel bars are arranged in the holes; the node core area comprises at least three groups of movable stirrups, and the movable stirrups are arranged on segment column connecting steel bars;
Concentrating all the movable stirrups on the top of the node core area; moving the lowest group of movable stirrups to the bottom of the node core area, and placing the frame girder connecting steel bars in grooves at the end parts of the frame girders through the node core area, wherein the frame girder connecting steel bars are arranged on the upper layer of the lowest group of movable stirrups; then moving the middle group of movable stirrups to the upper layer of the frame girder connecting steel bars, and moving the movable steel bars to pass through the node core area and penetrate into holes of the opposite rib feet, wherein the movable steel bars are arranged on the middle group of movable stirrups; finally, the uppermost group of movable stirrups are moved to the upper layer of the movable steel bars; filling the holes by grouting;
s5: pouring a node core area;
s6: and paving the superposed layers on the main girder of the frame, the top surface of the ribbed plate and the top surface of the concrete to form a cross-layer floor.
2. The method of building a cross-floor of claim 1, wherein the frame girders, the ribbed plates, and the segmental columns are connected at the node core area.
3. The method of constructing a cross-floor of claim 1, wherein the ribbed partial rib foot ends are mounted to the frame main beam lugs.
4. A method of constructing a cross-storey building according to claim 1 wherein at least two section columns carry a frame main beam.
5. The method of constructing a cross-storey building according to claim 1, wherein brackets are provided on tops of the upper and lower storey columns.
6. The method of building a cross-floor of claim 1, wherein the frame girders and the ribbed plate top surfaces are aligned with equally spaced stirrups projecting from the top surfaces into the laminate.
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CN201810739102.3A CN108678165B (en) | 2018-07-06 | 2018-07-06 | Construction method of cross-layer floor |
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CN201810739102.3A CN108678165B (en) | 2018-07-06 | 2018-07-06 | Construction method of cross-layer floor |
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CN108678165B true CN108678165B (en) | 2024-05-28 |
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