CN112726917B - Connecting structure of precast slab and bay beam and construction method thereof - Google Patents
Connecting structure of precast slab and bay beam and construction method thereof Download PDFInfo
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- CN112726917B CN112726917B CN202011594875.0A CN202011594875A CN112726917B CN 112726917 B CN112726917 B CN 112726917B CN 202011594875 A CN202011594875 A CN 202011594875A CN 112726917 B CN112726917 B CN 112726917B
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- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
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- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- 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
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/023—Separate connecting devices for prefabricated floor-slabs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention discloses a connecting structure of a precast slab and an open space beam, which comprises: prefabricating a slab; the opening beam is supported at the bottom of the precast slab, and a corner is defined between the side surface of the opening beam and the bottom surface of the precast slab; and the reinforcing assembly is arranged at the corner and is provided with a top plate and a side plate, the top plate is fixedly connected with the bottom surface of the precast slab, and the side plate is fixedly connected with the side surface of the compartment beam. The invention also provides a construction method of the connection structure of the precast slabs and the bay beams. According to the connecting structure of the precast slab and the bay beam, provided by the invention, the joint strength between the precast slab and the bay beam can be enhanced through the arrangement of the reinforcing component, so that the integrity of the precast slab and the bay beam is improved, the cooperative deformation capability of each lateral force resisting component can be improved, and the interlayer displacement of the structure is reduced, so that the local or integral collapse of a masonry structure floor is avoided as much as possible, and better shock resistance is obtained; and the construction method of the connecting structure of the precast slab and the bay beam is simple and convenient.
Description
Technical Field
The invention belongs to the technical field of buildings, and particularly relates to a connecting structure of a precast slab and an open room beam and a construction method thereof, wherein the connecting structure can strengthen the integrity between the precast slab and the open room beam.
Background
According to the analysis of the collapse mechanism of the masonry structure in the earthquake with the recent earthquake intensity of not less than 7 ℃ and the analysis and the summary of the earthquake-proof survey results of the traditional masonry structure in China, the most fundamental reason of the collapse of the prefabricated floor system of the masonry structure is attributed to the characteristics of the used materials and the infirm lap joint between the prefabricated plate and the bay beam, and the structural integrity cannot meet the corresponding requirements. Due to the building layout requirements of the masonry structure, factors which are not beneficial to earthquake resistance exist in nature.
Therefore, in view of the above technical problems, there is a need for a new connecting structure of precast slabs and beams and a construction method thereof.
Disclosure of Invention
The invention aims to provide a connecting structure of a precast slab and an open space beam and a construction method thereof, which have the advantages of strong integrity and simple construction, and solve the problems in the prior art.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a connecting structure of a precast slab and an open space beam comprises:
prefabricating a slab;
the open beam is supported at the bottom of the precast slab, and a corner is defined between the side surface of the open beam and the bottom surface of the precast slab;
and the reinforcement assembly is arranged at the corner and is used for reinforcing the joint strength between the precast slabs and the compartment beam, and the reinforcement assembly is provided with a top plate and a side plate, the top plate is fixedly jointed with the bottom surface of the precast slab, and the side plate is fixedly jointed with the side surface of the compartment beam.
Further, the reinforcing component comprises a first channel-shaped piece and a second channel-shaped piece which are mutually clamped;
the first groove-shaped part comprises a first vertical plate, and a first upper ear plate and a first lower ear plate which are respectively formed at the upper end and the lower end of the first vertical plate and are oppositely arranged;
the second groove-shaped part comprises a second vertical plate, and a second upper ear plate and a second lower ear plate which are respectively formed at the upper end and the lower end of the second vertical plate and are oppositely arranged, and one end of the second lower ear plate, which is deviated from the second vertical plate, extends downwards to form a third vertical plate;
the first lower ear plate is clamped between the second upper ear plate and the second lower ear plate, the first upper ear plate forms a top plate of the reinforcing assembly, and the third vertical plate forms a side plate of the reinforcing assembly.
Furthermore, the first upper ear plate is anchored on the bottom surface of the precast slab through a chemical anchor bolt, and the third vertical plate is anchored on the side surface of the intermediate beam through a chemical anchor bolt.
Furthermore, steel adhesive glue is coated between the first upper ear plate and the bottom surface of the precast slab, and steel adhesive glue is coated between the third vertical plate and the side surface of the room beam.
Further, the precast panels include first and second precast panels disposed at opposite ends thereof, with opposite ends of the first and second precast panels being supported on top of the open girders.
Furthermore, a plurality of steel bars are arranged on the first prefabricated plate and the second prefabricated plate, bent parts are formed at two ends of the steel bars in a bending mode, and the bent parts at two ends of the steel bars are embedded into the first prefabricated plate and the second prefabricated plate respectively.
Furthermore, a layer of polymer mortar is laid on the tops of the first prefabricated slab and the second prefabricated slab, and the steel bars are embedded in the polymer mortar.
Further, a gap is formed between the first prefabricated panel and the second prefabricated panel, and the polymer mortar is filled in the gap.
Further, the first precast slab and the second precast slab are hollow precast slabs, and the bent part of the steel bar extends into the hollow pore canal of the first precast slab and the second precast slab.
A construction method for a connecting structure of a precast slab and an open space beam comprises the following steps:
step 1: erecting and supporting the precast slabs on the tops of the bay beams;
step 2: polishing the place where the corner is formed between the bottom surface of the precast slab and the side surface of the bay beam and forming an anchoring connection hole;
and step 3: respectively coating the sticky steel glue on the top surface of the top plate and the side surface of the side plate of the reinforcement assembly, so that the top surface of the top plate of the reinforcement assembly is tightly attached to the bottom surface of the precast slab, and the side surface of the side plate of the reinforcement assembly is tightly attached to the side surface of the bay beam;
and 4, step 4: fixedly connecting a top plate of the reinforcement assembly to the bottom surface of the precast slab through a chemical anchor bolt, and fixedly connecting a side plate of the reinforcement assembly to the side surface of the bay beam through the chemical anchor bolt;
and 5: arranging a steel bar at the top of the precast slab at intervals of a preset distance, and embedding two ends of the steel bar into the precast slab;
step 6: and laying a polymer mortar surface layer on the top of the precast slab to finish the construction of the connecting structure of the precast slab and the bay beam.
The invention has the beneficial effects that:
compared with the prior art, the connecting structure of the precast slab and the bay beam can enhance the joint strength between the precast slab and the bay beam through the arrangement of the reinforcing component, so that the integrity of the precast slab and the bay beam is improved, the cooperative deformation capability of each lateral force resisting component can be improved, and the interlayer displacement of the structure is reduced, so that the local or integral collapse of a masonry structure floor is avoided as much as possible, and better shock resistance is obtained; and the construction method of the connection structure of the precast slab and the bay beam is simple and convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of one embodiment of the present application;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
fig. 3 is a schematic view of the embodiment of fig. 1 from another perspective.
Description of reference numerals: 1, precast slab; 11-a first prefabricated panel; 12-a second preformed sheet; 13-hollow channel; 14-gap; 2-opening an intermediate beam; 3-a reinforcement component; 31-a first channel profile; 32-a second channel profile; 311-a first riser; 312-a first upper ear plate; 313-a first lower ear plate; 321-a second vertical plate; 322-a second upper ear plate; 323-a second lower ear plate; 324-a third riser; 4-chemical anchor bolt; 5-reinforcing steel bars; 51-a bending part; 6-polymer mortar.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In the illustrated embodiment, directional references, i.e., up, down, left, right, front, rear, etc., are relative to each other and are used to explain the relative structure and movement of the various components in the present application. These representations are appropriate when the components are in the positions shown in the figures. However, if the description of the position of the element changes, it is assumed that these representations will also change accordingly.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a connecting structure for prefabricated panels and an intermediate girder according to a preferred embodiment of the present invention includes: precast slabs 1, an open space beam 2 and a reinforcement assembly 3.
Wherein the division beam 2 is supported at the bottom of the precast slab 1, and corners are defined between the side surfaces of the division beam 2 and the bottom surface of the precast slab 1. The reinforcing assembly 3 is provided at a corner between a side surface of the bay beam 2 and a bottom surface of the precast slab 1, and serves to reinforce the coupling strength between the precast slab 1 and the bay beam 2. The reinforcement assembly 3 has a top plate and side plates, the top plate of the reinforcement assembly 3 being fixedly coupled to the bottom surface of the prefabricated slab 1, and the side plates of the reinforcement assembly 3 being fixedly coupled to the side surfaces of the opening beam 2. The reinforcing assembly 3 can indirectly increase the contact area between the precast slabs 1 and the bay beam 2 to improve the integrity of the precast slabs 1 and the bay beam 2
In an exemplary embodiment, the reinforcement component 3 comprises a first channel profile 31 and a second channel profile 32 which engage with each other. The first channel member 31 includes a first vertical plate 311, and a first upper ear plate 312 and a first lower ear plate 313 formed at the upper and lower ends of the first vertical plate 311 and disposed oppositely; the first channel part 31 is substantially shaped like a C-shaped steel. The second channel-shaped member 32 includes a second vertical plate 321, and a second upper ear plate 322 and a second lower ear plate 323 which are respectively formed at the upper end and the lower end of the second vertical plate 321 and are disposed oppositely, and a third vertical plate 324 is formed by extending downward at one end of the second lower ear plate 323 which is away from the second vertical plate 321. Preferably, the first channel section 31 and the second channel section 32 are made of steel. In the present embodiment, the first upper ear plate 312 of the first channel-shaped member 31 forms a top plate of the reinforcing component 3, and the third upright plate 324 of the second channel-shaped member 32 forms a side plate of the reinforcing component 3.
Specifically, the first lower ear plate 313 of the first channel member 31 is engaged between the second upper ear plate 322 and the second lower ear plate 323 of the second channel member 32, and a slot is defined between the second upper ear plate 322 and the second lower ear plate 323 of the second channel member 32, and the width of the slot is configured to match the thickness of the first lower ear plate 313 of the first channel member 31, so that the first lower ear plate 313 of the first channel member 31 can be engaged in the slot. The first channel-shaped part 31 and the second channel-shaped part 32 are mutually clamped to form the reinforcing component 3 which is substantially in an F shape, the reinforcing component 3 is formed by combining the two channel-shaped parts, the dismounting and the replacement of the reinforcing component 3 can be facilitated, particularly when the reinforcing component 3 is high in quality, the dismounting and the mounting can be facilitated due to the split design, and the potential safety hazard during the dismounting and the mounting can be reduced.
Specifically, the first upper ear plate 312 of the first channel-shaped member 31 is anchored to the bottom surface of the precast slab 1 by a chemical anchor 4, and the third upright plate 324 of the second channel-shaped member 32 is anchored to the side surface of the girder 2 by the chemical anchor 4. And steel adhesive is coated between the first upper ear plate 312 and the bottom surface of the precast slab 1, and steel adhesive is coated between the third vertical plate 324 and the side surface of the division beam 2, so as to further increase the bonding strength therebetween.
In an exemplary embodiment, the precast panel 1 includes first and second precast panels 11 and 12 disposed with their ends facing each other, and the opposite ends of the first and second precast panels 11 and 12 are supported on the top of the open center sill 2. A plurality of reinforcing bars 5 are laid on the first and second prefabricated panels 11 and 12, and the reinforcing bars 5 are laid one by one at predetermined intervals and are disposed to cross over the division beam 2. Both ends of the reinforcing bars 5 are bent to form bent portions 51, and the bent portions 51 at both ends of the reinforcing bars 5 are embedded in the first prefabricated panel 11 and the second prefabricated panel 12, respectively, so as to play a role of reinforcing the connection between the first prefabricated panel 11 and the second prefabricated panel 12, thereby enhancing the integrity of the first prefabricated panel 11 and the second prefabricated panel 12. Preferably, the first prefabricated panel 11 and the second prefabricated panel 12 are hollow prefabricated panels 1, and the bent portions 51 of the reinforcing bars 5 are provided to extend into the hollow tunnels 13 of the first prefabricated panel 11 and the second prefabricated panel 12.
In an exemplary embodiment, the first prefabricated panel 11 and the second prefabricated panel 12 are laid on top of each other with a layer of polymer mortar 6, and the steel reinforcement 5 is embedded in the polymer mortar 6. A gap 14 is formed between opposite ends of the first prefabricated panel 11 and the second prefabricated panel 12, and the polymer mortar 6 is filled in the gap 14 and can be coupled with the top of the open girder 2 through the gap 14; the joint strength and integrity of the first and second prefabricated panels 11 and 12 and the bay beam 2 can be further enhanced by laying the polymer mortar 6.
The invention also provides a construction method of the connection structure of the precast slab and the bay beam, which comprises the following steps:
step 1: erecting and supporting the precast slabs 1 on the tops of the bay beams 2;
step 2: polishing the place where the corner is formed between the bottom surface of the precast slab 1 and the side surface of the bay beam 2 and forming an anchoring connection hole;
and step 3: respectively coating the sticky steel glue on the top surface of the top plate and the side surface of the side plate of the reinforcing component 3, so that the top surface of the top plate of the reinforcing component 3 is tightly attached to the bottom surface of the precast slab 1, and the side surface of the side plate of the reinforcing component 3 is tightly attached to the side surface of the beam between the two steel plates 2;
and 4, step 4: the top plate of the reinforcement component 3 is fixedly connected to the bottom surface of the precast slab 1 through a chemical anchor bolt 4, and the side plate of the reinforcement component 3 is fixedly connected to the side surface of the beam 2 through the chemical anchor bolt 4;
and 5: arranging a steel bar 5 at the top of the precast slab 1 at intervals of a preset distance, and embedding two ends of the steel bar 5 into the precast slab 1;
step 6: and laying a polymer mortar 6 surface layer on the top of the precast slab 1 to finish the construction of the connecting structure of the precast slab 1 and the bay beam 2.
Through the polishing process in the step 2, the bonding and the fitting of the top plate and the side plate of the reinforcing assembly 3 in the step 3 are facilitated; the anchoring hole in the step 2 can be used for anchoring the chemical anchor bolt 4 in the step 4; in step 5, holes can be opened on the prefabricated slab 1 by a punching device to facilitate the embedding of the steel bars 5.
According to the connecting structure of the precast slab and the bay beam, provided by the invention, the joint strength between the precast slab 1 and the bay beam 2 can be enhanced through the arrangement of the reinforcing component 3, so that the integrity of the precast slab 1 and the bay beam 2 is improved, the cooperative deformation capability of each lateral force resisting component can be improved, and the interlayer displacement of the structure is reduced, so that the local or integral collapse of a masonry structure floor is avoided as much as possible, and better shock resistance is obtained; and the construction method of the connection structure of the precast slab 1 and the beam 2 is simple and convenient.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a connection structure of prefabricated plate and beam between opening which characterized in that includes:
prefabricating a slab;
the open beam is supported at the bottom of the precast slab, and a corner is defined between the side surface of the open beam and the bottom surface of the precast slab;
the reinforcement assembly is arranged at the corner and used for reinforcing the joint strength between the precast slabs and the compartment beam, and comprises a top plate and a side plate, the top plate is fixedly jointed with the bottom surface of the precast slab, and the side plate is fixedly jointed with the side surface of the compartment beam;
the reinforcing component comprises a first groove part and a second groove part which are clamped with each other, the first groove part comprises a first vertical plate and a first upper ear plate and a first lower ear plate which are arranged at the upper end and the lower end of the first vertical plate and are opposite to each other, the second groove part comprises a second vertical plate and a second upper ear plate and a second lower ear plate which are arranged at the upper end and the lower end of the second vertical plate and are opposite to each other, the second lower ear plate deviates from one end of the second vertical plate and extends downwards to form a third vertical plate, the first lower ear plate is clamped between the second upper ear plate and the second lower ear plate, the first upper ear plate forms a top plate of the reinforcing component, and the third vertical plate forms a side plate of the reinforcing component.
2. The connecting structure of the precast slab and the bay beam as claimed in claim 1, wherein the first upper ear plate is anchored to the bottom surface of the precast slab by a chemical anchor, and the third vertical plate is anchored to the side surface of the bay beam by a chemical anchor.
3. The connecting structure of the precast slab and the bay beam as recited in claim 2, wherein a steel adhesive is applied between the first upper ear plate and the bottom surface of the precast slab, and a steel adhesive is applied between the third vertical plate and the side surface of the bay beam.
4. A connection structure of precast slabs and open space beams according to any one of claims 1 to 3, wherein the precast slabs include first and second precast slabs disposed with opposite ends supported on the tops of the open space beams.
5. The connection structure of the precast slabs and the bay beam as claimed in claim 4, wherein a plurality of steel bars are provided on the first precast slab and the second precast slab, bent portions are formed at both ends of the steel bars by bending, and the bent portions at both ends of the steel bars are embedded in the first precast slab and the second precast slab, respectively.
6. The connection structure of the prefabricated panels and the bay beams as claimed in claim 5, wherein a layer of polymer mortar is laid on the tops of the first and second prefabricated panels, and the reinforcing steel bars are embedded in the polymer mortar.
7. The connection structure of the prefabricated panels and the intermediate beams according to claim 6, wherein a gap is formed between the first prefabricated panel and the second prefabricated panel, and the polymer mortar is filled in the gap.
8. The connection structure of the prefabricated panels and the intermediate girder according to claim 7, wherein the first and second prefabricated panels are hollow prefabricated panels, and the bent portions of the reinforcing bars extend into the hollow tunnels of the first and second prefabricated panels.
9. A construction method for a connection structure of a precast slab and an open space beam according to any one of claims 1 to 8, comprising the steps of:
step 1: erecting and supporting the precast slabs on the tops of the bay beams;
step 2: polishing the corner formed between the bottom surface of the precast slab and the side surface of the bay beam and forming an anchoring connection hole;
and step 3: respectively coating the sticky steel glue on the top surface of the top plate and the side surface of the side plate of the reinforcement assembly, so that the top surface of the top plate of the reinforcement assembly is tightly attached to the bottom surface of the precast slab, and the side surface of the side plate of the reinforcement assembly is tightly attached to the side surface of the bay beam;
and 4, step 4: fixedly connecting a top plate of the reinforcement assembly to the bottom surface of the precast slab through a chemical anchor bolt, and fixedly connecting a side plate of the reinforcement assembly to the side surface of the bay beam through the chemical anchor bolt;
and 5: arranging a steel bar at the top of the precast slab at intervals of a preset distance, and embedding two ends of the steel bar into the precast slab;
step 6: and laying a polymer mortar surface layer on the top of the precast slab to finish the construction of the connecting structure of the precast slab and the bay beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011594875.0A CN112726917B (en) | 2020-12-29 | 2020-12-29 | Connecting structure of precast slab and bay beam and construction method thereof |
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| CN202011594875.0A CN112726917B (en) | 2020-12-29 | 2020-12-29 | Connecting structure of precast slab and bay beam and construction method thereof |
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| CN112726917A CN112726917A (en) | 2021-04-30 |
| CN112726917B true CN112726917B (en) | 2022-06-24 |
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| JPWO2011093533A1 (en) * | 2010-02-01 | 2013-06-06 | 株式会社アークリエイト | Steel continuous beam structure |
| US8671640B1 (en) * | 2010-12-20 | 2014-03-18 | Keith E. Thomas | Rapidly locking building/lock components, bridge keys and locking keys to construct uniform whole locked building members and entire locked structures on-the-fly |
| CN202248958U (en) * | 2011-10-21 | 2012-05-30 | 苏州二建建筑集团有限公司 | Anti-seismic reinforcing structure of brick-concrete structural building |
| CN102535639B (en) * | 2011-12-26 | 2014-05-14 | 中国矿业大学 | Connection method for reinforcing joints between pre-fabricated hollow slabs and horizontal beam by embedding steel reinforcements |
| CN106193427B (en) * | 2015-05-04 | 2019-05-31 | 北新集团建材股份有限公司 | A kind of corner unit and its production method of assembled wall |
| CN111593816B (en) * | 2020-06-09 | 2021-11-30 | 上海沪江建筑工程有限公司 | Steel construction building connects corner portion reinforced structure |
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