CN109457801B - Connecting node of prefabricated reinforced concrete beam and construction method thereof - Google Patents
Connecting node of prefabricated reinforced concrete beam and construction method thereof Download PDFInfo
- Publication number
- CN109457801B CN109457801B CN201811602731.8A CN201811602731A CN109457801B CN 109457801 B CN109457801 B CN 109457801B CN 201811602731 A CN201811602731 A CN 201811602731A CN 109457801 B CN109457801 B CN 109457801B
- Authority
- CN
- China
- Prior art keywords
- concrete beam
- steel plate
- precast concrete
- notch
- embedded
- 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.)
- Active
Links
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 225
- 239000010959 steel Substances 0.000 claims abstract description 225
- 239000011178 precast concrete Substances 0.000 claims abstract description 121
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 43
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 22
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 abstract description 12
- 230000035939 shock Effects 0.000 abstract description 6
- 210000001503 joint Anatomy 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 10
- 238000005452 bending Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 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
- 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
- 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
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a connecting node of an assembled precast reinforced concrete beam and a construction method thereof, wherein the connecting node comprises a downward convex precast concrete beam and an upward convex precast concrete beam, the upper end face and the lower end face of the connecting side wall of the downward convex precast concrete beam are provided with first notches, and the upper end face and the lower end face of the connecting side wall of the upward convex precast concrete beam are correspondingly provided with second notches; an upper embedded steel plate and a lower embedded plate are arranged in the first notch and the second notch; the upper pre-buried steel plates and the lower pre-buried steel plates are correspondingly connected with upper and lower reinforced steel plates; and the connecting side walls of the two beams are respectively provided with a third notch and a fourth notch, and stress steel bars are transversely and correspondingly arranged in the third notch and the fourth notch. The method comprises the steps of manufacturing two beams; the steel plates are embedded, the two beams are in butt joint, and the stressed steel bars in the two beams are connected. According to the invention, three layers of energy consumption are realized through structural design, and the problems of poor ductile deformation capability and low shock resistance between dry connecting beams are solved; and the earthquake is easy to replace after the earthquake is damaged, and the assembly is convenient and the assembly rate is high.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a connecting node of an assembled precast reinforced concrete beam and a construction method thereof.
Background
The assembled building has the advantages of short building period, simple construction, material saving and the like, is an important structural form for promoting building industrialization and green building, and has important position in the future building industry.
The connection mode of the concrete assembly type structural node is distinguished by wet connection and dry connection. And (3) wet type node connection, namely finishing the manufacture of beam column components in a factory in advance, then carrying out assembly and hoisting after transporting to the site, and pouring concrete on the beam column nodes to finish the post-pouring integral structure. Because the concrete at the node is solidified after the precast concrete is solidified, the concrete and the precast concrete cannot be truly integrated, the tensile strength at the interface is low, weak links are formed, the earthquake resistance of the building is reduced, and the assembly rate is low. The dry type node connection has the advantages of convenient and quick installation and high assembly rate, and becomes a main trend under the trend of building industrialization, but the existing dry type connection still has the problems of poor ductile deformation capability and low shock resistance. For the building in the anti-seismic area, the principles of strong columns, weak beams and strong nodes and weak components need to be satisfied, so the anti-seismic strength of the connecting nodes is very important.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a connecting node of an assembled precast reinforced concrete beam and a construction method thereof, three-layer energy consumption is realized through structural design, and the problems of poor ductile deformation capability and low shock resistance between dry connecting beams are solved; meanwhile, the connecting node is easy to replace after earthquake damage, convenient to assemble, high in assembly rate and free of special construction support.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
The connecting node of the prefabricated reinforced concrete beam comprises a downward convex prefabricated concrete beam and an upward convex prefabricated concrete beam which are arranged correspondingly; the lower convex precast concrete beam and the upper convex precast concrete beam are internally provided with transverse reinforcing ribs and longitudinal reinforcing ribs respectively;
the upper end and the lower end of the connecting side wall of the upper convex precast concrete beam are respectively provided with a second notch; an upper embedded steel plate is correspondingly arranged in a first notch at the upper end of the lower convex precast concrete beam and a second notch at the upper end of the upper convex precast concrete beam respectively, and a lower embedded steel plate is correspondingly arranged in a first notch at the lower end of the lower convex precast concrete beam and a second notch at the lower end of the upper convex precast concrete beam respectively; the upper embedded steel plate and the lower embedded steel plate are respectively fixedly connected with the longitudinal reinforcing ribs; the upper end face of the upper embedded steel plate and the lower end face of the lower embedded steel plate are correspondingly connected with an upper reinforced steel plate and a lower reinforced steel plate through fixing parts respectively;
the upper part and the lower part of the connecting side wall of the lower convex precast concrete beam are respectively provided with a third notch, and the upper part and the lower part of the connecting side wall of the upper convex precast concrete beam are respectively provided with a fourth notch corresponding to the third notch; the first notch and the third notch are in a step shape on the connecting side wall of the downward-convex precast concrete beam, and the second notch and the fourth notch are in a step shape on the connecting side wall of the upward-convex precast concrete beam;
and stress steel bars are respectively and transversely correspondingly arranged in the third notch and the fourth notch, one ends of the stress steel bars are respectively connected with the corresponding downward convex precast concrete beam and upward convex precast concrete beam, and the other ends of the stress steel bars are fixedly connected with the corresponding stress steel bars through connecting parts.
In addition, the connecting node of the assembled precast reinforced concrete beam provided by the invention can also have the following additional technical characteristics:
preferably, the connecting part is a steel sleeve, the steel sleeve is sleeved at the joint of the two stressed steel bars, and a gap between the stressed steel bars and the steel sleeve is irrigated by mortar.
Preferably, the middle part of the connecting side wall of the downward convex precast concrete beam and the middle part of the connecting side wall of the upward convex precast concrete beam are slope surfaces; connecting steel plates are respectively embedded on the slope surface, templates are vertically arranged at the upper end and the lower end of the connecting steel plates respectively, the upper end or the lower end of each template is flush with the bottom surface of the corresponding notch, and the templates are fixedly connected with the transverse reinforcing ribs.
Further preferably, the included angle between the connecting steel plates and the horizontal plane is 30-60 degrees.
Further preferably, an elastic rubber sheet is laid on the connecting steel plate.
Preferably, the fixing component is a plurality of reinforcing bolts, and the reinforcing bolts are preset in the upper embedded steel plate and the lower embedded steel plate; the upper reinforcing steel plate and the lower reinforcing steel plate are respectively provided with a plurality of screw holes matched with a plurality of reinforcing bolts, and each reinforcing bolt is fixed with the corresponding screw hole through a nut.
Preferably, the prefabricated concrete column is further included, and the distance between the end part of the upper embedded steel plate, which is far away from the connecting side wall, and the prefabricated concrete column is 100-200mm.
Preferably, the upper embedded steel plate is matched with a first notch at the upper end of the connecting side wall of the lower convex precast concrete beam and a second notch at the upper end face of the upper convex precast concrete beam respectively.
Preferably, the lower embedded steel plate is matched with a first notch at the lower end of the connecting side wall of the lower convex precast concrete beam and a second notch at the lower end face of the upper convex precast concrete beam respectively.
Preferably, the horizontal distance between the upper pre-buried steel plate in the first recess and the upper pre-buried steel plate in the second recess is equal to the sum of the length of the third recess, the length of the fourth recess and the thickness of the elastic rubber sheet.
Preferably, the horizontal distance between the upper pre-buried steel plate in the first recess and the upper pre-buried steel plate in the second recess is greater than the length of the upper or lower reinforcing steel plate.
(II) a construction method of a connecting node of an assembled precast reinforced concrete beam, comprising the following steps:
step 1, manufacturing a downward convex precast concrete beam and an upward convex precast concrete beam;
step 2, embedding an upper embedded steel plate and a lower embedded steel plate in the first notch and the second notch; abutting the lower convex precast concrete beam with the upper convex precast concrete beam; the stress steel bars in the third notch and the stress steel bars in the fourth notch are fixedly connected through a connecting part;
and 3, fixedly connecting the upper embedded steel plate and the lower embedded steel plate with the upper reinforced steel plate and the lower reinforced steel plate through fixing parts respectively.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, through structural design, a three-layer energy consumption structure is formed, an upper reinforced steel plate and a lower reinforced steel plate form a layer of energy consumption structure on the outermost layer of the beam, a connecting steel plate forms an energy consumption layer in the middle, and a stressed steel bar forms a layer of energy consumption structure inside, so that all parts keep an elastic state when small earthquake (less than 4 levels) occurs; the outer reinforcing steel plate yields or breaks under the condition of medium earthquake (grade 4-6), and the connecting steel plate starts to yield and bear force; under the condition of large earthquake (6-8 grades), the energy consumption of the connecting steel plate is destroyed, and the stress steel bars start to yield and stress, so that the connecting node can bear various earthquake levels, the stability and the safety of the main body structure of the beam are ensured in the earthquake, and the earthquake resistance of the connecting node is improved.
(2) The invention designs the stress part of the beam in the earthquake into the reinforced steel plate, the connecting steel plate and the stress steel bar which are convenient to replace, so that the connecting node is convenient to repair and replace after the earthquake, and has strong practicability.
(3) According to the invention, the elastic rubber sheet is arranged at the connecting node, so that a buffer layer is added at the connecting node, and the ductile deformation capability and the anti-seismic performance of the connecting node are further enhanced.
(4) The connecting steel plate and the templates at two sides of the connecting steel plate form an inverse Z-shaped connecting shape, so that the shape of the connecting node accords with the shaking trend of a beam structure in an earthquake, the connecting node cannot break even if the connecting node moves in a staggered manner under the shock wave of the earthquake, the ductile deformation capability of the connecting node is enhanced, and the earthquake resistance is further enhanced.
(5) The construction method is simple, easy to operate and high in assembly rate, and can greatly improve the efficiency of building construction.
Drawings
The invention will now be described in further detail with reference to the drawings and to specific examples.
Fig. 1 is a schematic perspective view showing a connection node of an assembled precast reinforced concrete beam according to the present invention.
Fig. 2 is a schematic view of a connection structure of a downward convex precast concrete beam in the present invention.
Fig. 3 is a schematic view of the structure of the downward convex precast concrete beam in the present invention.
Fig. 4 is a schematic structural view of an upwardly convex precast concrete beam according to the present invention.
Fig. 5 is a schematic structural view of an upper pre-buried plate in the present invention.
Fig. 6 is a schematic view of the structure of the upper reinforcing plate in the present invention.
Fig. 7 is a schematic structural view of an embodiment of the connecting member in the present invention.
In the above figures, 1 a precast concrete beam is protruded downward; 101 a first recess; 102 a third recess; 2, upward projecting the precast concrete beam; 201 a second recess; 202 a fourth notch; 3, embedding a steel plate; 4, embedding a steel plate below; 5, reinforcing a steel plate; 501 reinforcing bolts; 502 screw holes; a 503 nut; 6, reinforcing a steel plate; 7, stress reinforcing steel bars; 701 a steel sleeve; 8, connecting steel plates; 801 template; 9, prefabricating a concrete column; 10 elastic rubber sheet.
Detailed Description
Referring to fig. 1 to 4, a connection node of an assembled precast reinforced concrete beam according to an embodiment of the present invention includes a downward convex precast concrete beam 1 and an upward convex precast concrete beam 2 which are disposed corresponding to each other; the lower convex precast concrete beam 1 and the upper convex precast concrete beam 2 are respectively provided with transverse reinforcing ribs and longitudinal reinforcing ribs; the upper end and the lower end of the connecting side wall of the downward convex precast concrete beam 1 are respectively provided with a first notch 101, and the upper end and the lower end of the connecting side wall of the upward convex precast concrete beam 2 are respectively correspondingly provided with a second notch 201; an upper embedded steel plate 3 is correspondingly arranged in the first notch 101 at the upper end of the lower convex precast concrete beam 1 and the second notch 201 at the upper end of the upper convex precast concrete beam 2 respectively, and a lower embedded steel plate 4 is correspondingly arranged in the first notch 101 at the lower end of the lower convex precast concrete beam 1 and the second notch 201 at the lower end of the upper convex precast concrete beam 2 respectively; the upper embedded steel plate 3 and the lower embedded steel plate 4 are respectively fixedly connected with the longitudinal reinforcing ribs; the upper end face of the upper embedded steel plate 3 and the lower end face of the lower embedded steel plate 4 are correspondingly connected with an upper reinforced steel plate 5 and a lower reinforced steel plate 6 through fixing parts respectively.
The upper part and the lower part of the connecting side wall of the lower convex precast concrete beam 1 are respectively provided with a third notch 102, and the upper part and the lower part of the connecting side wall of the upper convex precast concrete beam 2 are respectively provided with a fourth notch 202 corresponding to the third notch 102; the first notch 101 and the third notch 102 are in a step shape on the connecting side wall of the downward convex precast concrete beam 1, and the second notch 201 and the fourth notch 202 are in a step shape on the connecting side wall of the upward convex precast concrete beam 2; the third notch 102 and the fourth notch 202 are respectively and transversely correspondingly provided with a stress steel bar 7, one end of the stress steel bar 7 is respectively connected with the corresponding downward convex precast concrete beam 1 and upward convex precast concrete beam 2, and the other end of the stress steel bar 7 is fixedly connected with the corresponding stress steel bar 7 through a connecting component.
In the above embodiment, the longitudinal reinforcing ribs in the downward convex precast concrete beam 1 and the upward convex precast concrete beam 2 are fixedly connected with the upper embedded steel plate 3 and the lower embedded steel plate 4, and are assembled and connected through mutual matching of the connecting nodes to form an assembled precast concrete beam; the upper embedded steel plate 3 and the lower embedded steel plate 4 in the first notch 101 which are connected with the upper end and the lower end of the side wall through the lower convex precast concrete beam 1 and the corresponding upper embedded steel plate 3 and lower embedded steel plate 4 in the second notch 201 which is connected with the upper end and the lower end of the side wall through the upper convex precast concrete beam 2 form a two-sided symmetrical structure, longitudinal reinforcing ribs in the lower convex precast concrete beam 1 and the upper convex precast concrete beam 2 are welded and fixed with the upper embedded steel plate 3 and the lower embedded steel plate 4, and meanwhile the upper embedded steel plate 3 and the lower embedded steel plate 4 become replaceable parts which are connected with external reinforcing steel plates in the beam, so that under the condition of a medium earthquake, the external upper reinforcing steel plate 5 and the lower reinforcing steel plate 6 yield or break, the girder structure is not affected, an external energy consumption layer is formed, and the external reinforcing steel plate is replaceable. The first notch 101, the third notch 102, the second notch 201 and the fourth notch 202 respectively form stepped notches at the upper end and the lower end of the connecting side wall of the lower convex precast concrete beam 1 and the upper end and the lower end of the connecting side wall of the upper convex precast concrete beam 2, so that the contact area of a connecting node is increased, the friction force is further increased, and the binding force is improved. The third notch 102 and the fourth notch 202 are respectively and transversely correspondingly provided with a stress steel bar 7, one end of the stress steel bar 7 is connected with the corresponding downward-convex precast concrete beam 1 and upward-convex precast concrete beam 2, the other end of the stress steel bar 7 is fixedly connected with the corresponding stress steel bar 7 through a connecting component, the stress steel bar 7 forms a stress reinforcing energy consumption layer in the beam, under the condition of a medium earthquake, the stress steel bar 7 is not damaged or deformed, under the condition of a large earthquake, the steel plate is withdrawn from work, the stress steel bar 7 is stressed in the beam, and the earthquake resistance of a connecting node is enhanced.
According to the connecting node, a three-layer energy consumption structure is formed through structural design, the upper reinforcing steel plate 5 and the lower reinforcing steel plate 6 form a layer of energy consumption structure on the outermost layer of the beam, and the stress steel bars 7 form a layer of energy consumption structure inside, so that all parts of the connecting node keep an elastic state when small earthquake occurs, the outer reinforcing steel plate 6 starts to yield under the condition of medium earthquake, the stress steel bars 7 are not stressed, the stability and the safety of the main structure of the beam are ensured, and the earthquake resistance of the connecting node is improved; meanwhile, the stress part of the beam in the earthquake is designed into a reinforced steel plate and a stress steel bar 7 which are convenient to replace, so that the connecting node is convenient to repair and replace after the earthquake, and the practicability is high.
Referring to fig. 7, according to an embodiment of the present invention, the connection part is a steel sleeve 701, the steel sleeve 701 is sleeved at the connection part of two stress steel bars 7, and a gap between the stress steel bars 7 and the steel sleeve 701 is irrigated with mortar.
In the above embodiment, two sets of atress reinforcing bars can welded connection, also can locate the junction of two sets of atress reinforcing bars 7 through steel sleeve 701 cover, the accurate butt joint between two sets of atress reinforcing bars 7 of being convenient for avoids appearing the position dislocation between two sets of atress reinforcing bars 7 that wait to connect, and the gap between atress reinforcing bar 7 and the steel sleeve 701 adopts the mortar watering, can strengthen the intensity and the stability that atress reinforcing bar 7 connects, reinforcing the joint strength of connected node.
Referring to fig. 1 and 2, according to one embodiment of the present invention, the middle of the connecting side wall of the downward-convex precast concrete beam 1 and the middle of the connecting side wall of the upward-convex precast concrete beam 2 are slope surfaces; connecting steel plates 8 are respectively embedded on the slope surface, templates 801 are vertically arranged at the upper end and the lower end of the connecting steel plates 8 respectively, the upper end or the lower end of the templates 801 are flush with the bottom surfaces of the corresponding notches, and the templates 801 are fixedly connected with transverse reinforcing ribs.
In the above embodiment, the middle part of the connecting side wall of the downward convex precast concrete beam 1 and the middle part of the connecting side wall of the upward convex precast concrete beam 2 are slope surfaces, the slope surfaces are pre-embedded with connecting steel plates 8, the upper ends and the lower ends of the connecting steel plates 8 are respectively vertically welded with templates 801, the upper ends or the lower ends of the templates 801 are flush with the bottom surfaces of corresponding notches, the templates 801 are fixedly connected with transverse reinforcing ribs, the flatness of a connecting plane at a connecting node is ensured, namely the stress uniformity of two side beams of the connecting node is ensured, and the force transmission of the connecting node in an earthquake is stable and uniform; and the connecting steel plate 8 and the template 801 form an inverse Z-shaped connecting shape at the connecting position, so that the shape of the connecting node accords with the shaking trend of a beam structure in an earthquake, the connecting node cannot break even if the connecting node moves in a staggered manner under the shock wave of the earthquake, the ductile deformation capability of the connecting node is enhanced, and the earthquake resistance is further enhanced.
Referring to fig. 1 and 2, according to one embodiment of the present invention, the angle between the connecting steel plate 8 and the horizontal plane is 30-60 °.
In the above embodiment, the included angle between the connecting steel plate 8 and the horizontal plane is 30-60 °, so that the shape of the supporting templates 801 on the two sides and the connecting steel plate 8 are similar to the shape of an earthquake vibration waveform, and the connecting node is dislocated under the earthquake shock wave without breaking, so that the ductile deformation capability of the connecting node is enhanced, and the earthquake resistance is further enhanced.
Referring to fig. 1, according to an embodiment of the present invention, an elastic rubber sheet 10 is laid on a connection steel plate 8.
In the above embodiment, the elastic rubber sheet 10 is laid on the connecting steel plate 8, so that a layer of buffer layer is added at the connecting node, and the ductile deformation capability and the anti-seismic performance of the connecting node are further enhanced.
Referring to fig. 5 and 6, according to an embodiment of the present invention, the fixing member is a plurality of reinforcing bolts 501, and the plurality of reinforcing bolts 501 are preset in the upper and lower pre-buried steel plates 3 and 4; a plurality of screw holes 502 matched with a plurality of reinforcing bolts 501 are correspondingly formed in the upper reinforcing steel plate 5 and the lower reinforcing steel plate 6 respectively, and each reinforcing bolt 501 is fixed with the corresponding screw hole 502 through a nut 503.
In the above embodiment, the reinforcing bolt 501 extends into the screw hole 502 and is fixedly connected through the nut 503, so that the upper pre-buried steel plate 3 and the upper reinforced steel plate 5, the lower pre-buried steel plate 4 and the lower reinforced steel plate 6 are detachably connected, meanwhile, the lower convex precast concrete beam 1 and the upper convex precast concrete beam 2 are fixedly connected on the outer layer, and meanwhile, the size of the bolt can be set, so that the bolt is matched with the beam result, and the connection stability of the lower pre-buried steel plate 3 and the lower reinforced steel plate 6 is ensured.
Referring to fig. 1 to 3, according to an embodiment of the present invention, there is further included a precast concrete column 9, and a distance between an end of the upper pre-buried steel plate 3, which is far from the connection sidewall, and the precast concrete column 9 is 100-200mm.
In the above embodiment, in normal use, the beam is mainly subjected to vertical load, a bending moment exists at the position of the connecting node, the distance between the end part of the upper embedded steel plate 3 far away from the connecting side wall and the precast concrete column 9 is 100-200mm, so that the bending moment at the connecting node cannot be too large, and the problem of poor overall structural stability caused by the bending moment between the connecting node and the column is avoided.
Referring to fig. 1, according to an embodiment of the present invention, the upper pre-buried steel plate 3 is matched with a first recess 101 of the lower precast concrete beam 1 connected to the upper end of the side wall, and a second recess 201 of the upper precast concrete beam 2 connected to the upper end of the side wall, respectively.
Referring to fig. 2 and 4, according to an embodiment of the present invention, the lower pre-buried steel plate 4 is matched with the first recess 101 of the lower convex precast concrete beam 1 connected to the lower end of the sidewall and the second recess 201 of the upper convex precast concrete beam 2 connected to the lower end of the sidewall, respectively.
In the above embodiment, the upper pre-embedded steel plate 3 and the lower pre-embedded steel plate 4 are matched with the corresponding notches, so that the first notch 101 and the second notch 201 at the upper end are filled with the two upper pre-embedded steel plates 3, the first notch 101 and the second notch 201 at the lower end are filled with the two lower pre-embedded steel plates 4, and the upper pre-embedded steel plate and the lower pre-embedded steel plate are welded and fixed with the transverse steel bars or the longitudinal steel bars in the corresponding beams, so that the notch for transmitting force is avoided at the first notch 101 or the second notch 201, the force transmission in the connecting node is continuous, and the stability of the structure is enhanced.
Referring to fig. 1, according to an embodiment of the present invention, the horizontal distance between the upper pre-buried steel plate 3 in the first recess 101 and the upper pre-buried steel plate 3 in the second recess 201 is equal to the sum of the length of the third recess 102, the length of the fourth recess 202, and the thickness of the elastic rubber.
In the above embodiment, the horizontal distance between the upper pre-embedded steel plate 3 in the first notch 101 and the upper pre-embedded steel plate 3 in the second notch 201 is equal to the sum of the length of the third notch 102, the length of the fourth notch 202 and the thickness of the elastic rubber, so as to form an internal and external supplementary structure, so that the weak part of the hollowed part between the upper pre-embedded steel plate 3 in the first notch 101 and the upper pre-embedded steel plate 3 in the second notch 201 of the outer layer is reinforced by the stress steel bars 7 and the elastic rubber in the third notch 102 and the fourth notch 202 of the inner layer, the hollowed part is arranged on the outer layer in consideration of the specific stress condition of the earthquake middle beam, the stress steel bars 7 are arranged on the inner layer, and the structure strength of the connecting node is gradually increased from outside to inside.
Referring to fig. 1, according to an embodiment of the present invention, the horizontal distance between the upper pre-buried steel plate 3 in the first recess 101 and the upper pre-buried steel plate 3 in the second recess 201 is greater than the length of the upper reinforcing steel plate 5 or the lower reinforcing steel plate 6.
In the above embodiment, the horizontal distance between the upper embedded steel plate 3 in the first notch 101 and the upper embedded steel plate 3 in the second notch 201 is greater than the length of the upper reinforced steel plate 5 or the lower reinforced steel plate 6, so that the upper reinforced steel plate 5 or the lower reinforced steel plate 6 is ensured to be positioned outside the upper embedded steel plate 3 or the lower embedded steel plate 4, and when an earthquake occurs, the external reinforcing plate is destroyed to at most affect the embedded steel plate without destroying the girder structure, and the replacement of the destroyed piece is facilitated.
Examples
The construction method of the connecting node of the prefabricated reinforced concrete beam comprises the following steps:
and step 1, manufacturing a downward convex precast concrete beam and an upward convex precast concrete beam.
Step 2, embedding an upper embedded steel plate and a lower embedded steel plate in the first notch and the second notch; specifically, inlay the embedded steel sheet of going up and embedding with lower embedded steel sheet and put into corresponding notch, make the up end of going up embedded steel sheet and protruding precast concrete beam down, go up protruding precast concrete beam's up end parallel and level, make the lower terminal surface of embedded steel sheet and protruding precast concrete beam down, go up protruding precast concrete beam's lower terminal surface parallel and level. Embedding a connecting steel plate on the slope surface of the connecting side wall of the lower convex precast concrete beam and the upper convex precast concrete beam; paving an elastic rubber sheet on the connecting steel plate, and butting the downward convex precast concrete beam with the upward convex precast concrete beam to align the stress steel bars in the third notch with the stress steel bars in the fourth notch; fixedly connecting the stress steel bars in the third notch with the stress steel bars in the fourth notch; specifically, the stressed steel bars on two sides are fixedly connected in a mode of welding or steel sleeve connection and mortar pouring.
And 3, extending preset bolts on the upper embedded steel plate and the lower embedded steel plate into corresponding screw holes on the upper reinforced steel plate and the lower reinforced steel plate, and fixing the preset bolts through nuts to complete the assembly of the connecting joints of the precast concrete beam.
The pre-burying in the construction method comprises the steps of welding and fixing a steel plate and steel bars in a beam, and finishing the position fixing of a pre-buried part, namely, welding and fixing an upper pre-buried steel plate, a lower convex precast concrete beam and longitudinal reinforcing ribs positioned at the edge of the beam in the upper convex precast concrete beam; and after the two connecting steel plates are welded or bolted with the templates, welding and fixing the corresponding templates with transverse reinforcing ribs positioned at the third notch and the fourth notch in the downward-convex precast concrete beam and the upward-convex precast concrete beam. If gaps exist among the upper embedded steel plate, the lower embedded steel plate and the beam, gaps exist among the connecting steel plates and the beam, and concrete mortar is used for pouring. The method for assembling the precast beam can complete the assembling process of the precast concrete beam within two hours by two workers, is short in time consumption, easy to operate and high in assembling rate, and can greatly improve the efficiency of building construction.
The lengths and the thicknesses of the upper reinforcing steel plate, the lower reinforcing steel plate, the upper embedded steel plate and the lower embedded steel plate are determined according to the actual structure and the earthquake resistance level of the building, and the widths are the same as the widths of the beams.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and the equivalents thereof, the present invention is intended to include such modifications and variations.
Claims (7)
1. The connecting node of the assembled precast reinforced concrete beam is characterized by comprising a lower convex precast concrete beam (1) and an upper convex precast concrete beam (2) which are arranged correspondingly to each other; the lower convex precast concrete beam (1) and the upper convex precast concrete beam (2) are respectively provided with transverse reinforcing ribs and longitudinal reinforcing ribs;
the upper end and the lower end of the connecting side wall of the lower convex precast concrete beam (1) are respectively provided with a first notch (101), and the upper end and the lower end of the connecting side wall of the upper convex precast concrete beam (2) are respectively correspondingly provided with a second notch (201); an upper embedded steel plate (3) is correspondingly arranged in a first notch (101) at the upper end of the lower protruding precast concrete beam (1) and a second notch (201) at the upper end of the upper protruding precast concrete beam (2), a lower embedded steel plate (4) is correspondingly arranged in the first notch (101) at the lower end of the lower protruding precast concrete beam (1) and the second notch (201) at the lower end of the upper protruding precast concrete beam (2), and the upper embedded steel plate (3) and the lower embedded steel plate (4) are fixedly connected with longitudinal reinforcing ribs respectively; the upper end face of the upper embedded steel plate (3) and the lower end face of the lower embedded steel plate (4) are correspondingly connected with an upper reinforced steel plate (5) and a lower reinforced steel plate (6) through fixing parts respectively;
the upper part and the lower part of the connecting side wall of the lower convex precast concrete beam (1) are respectively provided with a third notch (102), and the upper part and the lower part of the connecting side wall of the upper convex precast concrete beam (2) are respectively provided with a fourth notch (202) corresponding to the third notch (102); the first notch (101) and the third notch (102) are in a step shape on the connecting side wall of the downward convex precast concrete beam (1), and the second notch (201) and the fourth notch (202) are in a step shape on the connecting side wall of the upward convex precast concrete beam (2);
stress steel bars (7) are respectively and transversely correspondingly arranged in the third notch (102) and the fourth notch (202), one end of each stress steel bar (7) is respectively connected with the corresponding downward convex precast concrete beam (1) and upward convex precast concrete beam (2), and the other end of each stress steel bar is fixedly connected with the corresponding stress steel bar (7) through a connecting part;
the middle part of the connecting side wall of the downward convex precast concrete beam (1) and the middle part of the connecting side wall of the upward convex precast concrete beam (2) are slope surfaces;
connecting steel plates (8) are respectively embedded in the slope surface, templates (801) are vertically arranged at the upper end and the lower end of the connecting steel plates (8) respectively, the upper end or the lower end of the templates (801) is level with the bottom surface of the corresponding notch, and the templates (801) are fixedly connected with the transverse reinforcing ribs;
the included angle between the connecting steel plate (8) and the horizontal plane is 30-60 degrees;
an elastic rubber sheet (10) is paved on the connecting steel plate (8).
2. The connecting node of the fabricated precast reinforced concrete beam according to claim 1, wherein the connecting component is a steel sleeve (701), the steel sleeve (701) is sleeved at the joint of two stress steel bars (7), and a gap between the stress steel bars (7) and the steel sleeve (701) is irrigated by mortar.
3. The connecting node of the prefabricated reinforced concrete beam according to claim 1, wherein the fixing component is a plurality of reinforcing bolts (501), and a plurality of the reinforcing bolts (501) are preset in the upper pre-embedded steel plate (3) and the lower pre-embedded steel plate (4);
a plurality of screw holes (502) matched with a plurality of reinforcing bolts (501) are correspondingly formed in the upper reinforcing steel plate (5) and the lower reinforcing steel plate (6), and each reinforcing bolt (501) is fixed with the corresponding screw hole (502) through a nut (503).
4. The connecting node of the fabricated precast reinforced concrete beam according to claim 1, further comprising a precast concrete column (9), wherein a distance between an end of the upper pre-buried steel plate (3) far from the connecting sidewall and the precast concrete column (9) is 100-200mm.
5. The connection node of the fabricated precast reinforced concrete beam according to claim 1, wherein a horizontal distance between the upper pre-buried steel plate (3) in the first recess (101) and the upper pre-buried steel plate (3) in the second recess (201) is equal to a sum of a length of the third recess (102), a length of the fourth recess (202), and a thickness of the elastic rubber sheet (10).
6. The connection node of the fabricated precast reinforced concrete beam according to claim 5, wherein a horizontal distance between the upper pre-buried steel plate (3) in the first recess (101) and the upper pre-buried steel plate (3) in the second recess (201) is greater than a length of the upper reinforcing steel plate (5) or the lower reinforcing steel plate (6).
7. A construction method based on the connection node of the fabricated precast reinforced concrete beam according to any one of claims 1 to 6, comprising the steps of:
step 1, manufacturing a downward convex precast concrete beam and an upward convex precast concrete beam;
step 2, embedding an upper embedded steel plate and a lower embedded steel plate in the first notch and the second notch; the upper embedded steel plate and the lower embedded steel plate are embedded into corresponding notches, so that the upper end face of the upper embedded steel plate is flush with the upper end faces of the lower convex precast concrete beam and the upper convex precast concrete beam, and the lower end face of the lower embedded steel plate is flush with the lower end faces of the lower convex precast concrete beam and the upper convex precast concrete beam; embedding a connecting steel plate on the slope surface of the connecting side wall of the lower convex precast concrete beam and the upper convex precast concrete beam; paving an elastic rubber sheet on the connecting steel plate, and butting the downward convex precast concrete beam with the upward convex precast concrete beam to align the stress steel bars in the third notch with the stress steel bars in the fourth notch; fixedly connecting the stress steel bars in the third notch with the stress steel bars in the fourth notch; specifically, the stressed steel bars on two sides are fixedly connected in a manner of welding or steel sleeve connection and then mortar pouring;
and 3, extending preset bolts on the upper embedded steel plate and the lower embedded steel plate into corresponding screw holes on the upper reinforced steel plate and the lower reinforced steel plate, and fixing the preset bolts through nuts to complete the assembly of the connecting joints of the precast concrete beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602731.8A CN109457801B (en) | 2018-12-26 | 2018-12-26 | Connecting node of prefabricated reinforced concrete beam and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811602731.8A CN109457801B (en) | 2018-12-26 | 2018-12-26 | Connecting node of prefabricated reinforced concrete beam and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109457801A CN109457801A (en) | 2019-03-12 |
| CN109457801B true CN109457801B (en) | 2023-12-15 |
Family
ID=65614839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811602731.8A Active CN109457801B (en) | 2018-12-26 | 2018-12-26 | Connecting node of prefabricated reinforced concrete beam and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109457801B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439116A (en) * | 2019-08-09 | 2019-11-12 | 昌大建筑科技有限公司 | Concrete assembles dry construction linked system entirely |
| CN110374205B (en) * | 2019-08-09 | 2021-02-12 | 昌大建筑科技有限公司 | Construction method of concrete full-assembly dry-type structure connecting system |
| CN111173341B (en) | 2020-01-14 | 2021-02-19 | 西南交通大学 | Dry-method connection energy-consumption beam-column joint based on bracket |
| CN111749328A (en) * | 2020-07-28 | 2020-10-09 | 湘潭大学 | Novel assembly type beam joint and construction form thereof |
| CN113006279B (en) * | 2021-03-19 | 2022-05-06 | 山东建筑大学 | Inorganic adhesive composite bamboo-wood structure middle beam-column connection node, frame structure and method |
| CN115324199A (en) * | 2022-08-31 | 2022-11-11 | 长安大学 | Prefabricated reinforced concrete beam of assembled building that lacing plate connects |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004060340A (en) * | 2002-07-30 | 2004-02-26 | Kajima Corp | Full precast hollow floor slab and integral structure of the floor slab and building frame beam |
| KR20040077578A (en) * | 2004-05-31 | 2004-09-04 | 주식회사 노빌테크 | Composite Beam Stiffened with Prestressed Concrete Panel Having Embedded Lower Flange and Constructing Method thereof |
| KR100628537B1 (en) * | 2005-10-25 | 2006-09-26 | 대림산업 주식회사 | Pc structure wall system with high earthquake resistance capacity |
| KR20100106259A (en) * | 2010-08-19 | 2010-10-01 | 동국대학교 산학협력단 | The remodeling earthquake resistant connection details by using precast concrete member for old reinforced beam-column building structures and the remodeling construction method using the same |
| KR20130083410A (en) * | 2012-01-12 | 2013-07-22 | (주)태영이씨엠 | Slab-type box girder of a varying longitudinal section made by prestressed precast concrete and method constructing the bridge therewith |
| KR20150019274A (en) * | 2013-08-13 | 2015-02-25 | 주식회사 길교이앤씨 | Wide PC beam for slim floor |
| CN204753814U (en) * | 2015-05-29 | 2015-11-11 | 长沙理工大学 | From reinforced concrete frame node that restores to throne |
| KR20160015101A (en) * | 2014-07-30 | 2016-02-12 | 주식회사 하이브릭스이앤씨 | Methods of increasing the sectional resisting force for negative moment acting at the end part of beam in case of repair or remodeling |
| CN105780923A (en) * | 2016-05-04 | 2016-07-20 | 福建工程学院 | Assembly structure of prefabricated concrete beam and concrete-filled steel tube column |
| CN106677340A (en) * | 2017-01-13 | 2017-05-17 | 沈阳建筑大学 | Flange plate type precast assembly type concrete hidden bracket dry type connecting system |
| CN107587605A (en) * | 2016-07-07 | 2018-01-16 | 中恒建设集团有限公司 | A kind of complete precast prestressed fabricated construction and its construction method |
| CN108166620A (en) * | 2017-12-25 | 2018-06-15 | 天津大学 | A kind of assembly concrete beam-column, column-column connected node |
| CN108755963A (en) * | 2018-06-12 | 2018-11-06 | 西安建筑科技大学 | A kind of partial precast assembled steel reinforced concrete giant frame structure and construction method |
| CN108842912A (en) * | 2018-05-31 | 2018-11-20 | 南京东南建筑机电抗震研究院有限公司 | Assembled Self-resetting prestressed concrete frame friction energy-dissipating node |
| CN209468857U (en) * | 2018-12-26 | 2019-10-08 | 长安大学 | A kind of connecting node of prefabricated prestressed concrete beam |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6668507B2 (en) * | 2000-12-08 | 2003-12-30 | Paulin A. Blanchet | Hurricane resistant precast composite building system |
-
2018
- 2018-12-26 CN CN201811602731.8A patent/CN109457801B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004060340A (en) * | 2002-07-30 | 2004-02-26 | Kajima Corp | Full precast hollow floor slab and integral structure of the floor slab and building frame beam |
| KR20040077578A (en) * | 2004-05-31 | 2004-09-04 | 주식회사 노빌테크 | Composite Beam Stiffened with Prestressed Concrete Panel Having Embedded Lower Flange and Constructing Method thereof |
| KR100628537B1 (en) * | 2005-10-25 | 2006-09-26 | 대림산업 주식회사 | Pc structure wall system with high earthquake resistance capacity |
| KR20100106259A (en) * | 2010-08-19 | 2010-10-01 | 동국대학교 산학협력단 | The remodeling earthquake resistant connection details by using precast concrete member for old reinforced beam-column building structures and the remodeling construction method using the same |
| KR20130083410A (en) * | 2012-01-12 | 2013-07-22 | (주)태영이씨엠 | Slab-type box girder of a varying longitudinal section made by prestressed precast concrete and method constructing the bridge therewith |
| KR20150019274A (en) * | 2013-08-13 | 2015-02-25 | 주식회사 길교이앤씨 | Wide PC beam for slim floor |
| KR20160015101A (en) * | 2014-07-30 | 2016-02-12 | 주식회사 하이브릭스이앤씨 | Methods of increasing the sectional resisting force for negative moment acting at the end part of beam in case of repair or remodeling |
| CN204753814U (en) * | 2015-05-29 | 2015-11-11 | 长沙理工大学 | From reinforced concrete frame node that restores to throne |
| CN105780923A (en) * | 2016-05-04 | 2016-07-20 | 福建工程学院 | Assembly structure of prefabricated concrete beam and concrete-filled steel tube column |
| CN107587605A (en) * | 2016-07-07 | 2018-01-16 | 中恒建设集团有限公司 | A kind of complete precast prestressed fabricated construction and its construction method |
| CN106677340A (en) * | 2017-01-13 | 2017-05-17 | 沈阳建筑大学 | Flange plate type precast assembly type concrete hidden bracket dry type connecting system |
| CN108166620A (en) * | 2017-12-25 | 2018-06-15 | 天津大学 | A kind of assembly concrete beam-column, column-column connected node |
| CN108842912A (en) * | 2018-05-31 | 2018-11-20 | 南京东南建筑机电抗震研究院有限公司 | Assembled Self-resetting prestressed concrete frame friction energy-dissipating node |
| CN108755963A (en) * | 2018-06-12 | 2018-11-06 | 西安建筑科技大学 | A kind of partial precast assembled steel reinforced concrete giant frame structure and construction method |
| CN209468857U (en) * | 2018-12-26 | 2019-10-08 | 长安大学 | A kind of connecting node of prefabricated prestressed concrete beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109457801A (en) | 2019-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109457801B (en) | Connecting node of prefabricated reinforced concrete beam and construction method thereof | |
| CN113216484B (en) | Steel-concrete composite beam connection structure and design calculation method | |
| CN104032854B (en) | Assembled T-shaped mixing coupled wall and construction method thereof | |
| CN103806594A (en) | Precast concrete member | |
| CN111749364B (en) | Assembled composite wall based on C-shaped steel and construction method thereof | |
| CN104032855B (en) | Assembled cross mixing coupled wall and construction method thereof | |
| CN209468857U (en) | A kind of connecting node of prefabricated prestressed concrete beam | |
| CN210086022U (en) | Assembled single-box multi-chamber corrugated steel web box girder | |
| CN111197288A (en) | Bridge wet joint reinforcing device and installation method | |
| CN209923753U (en) | Steel plate combination beam with integrally prefabricated steel main beam and bridge deck and bridge | |
| CN109339245B (en) | Prefabricated shear wall and superimposed sheet connection structure and construction method | |
| CN104032862B (en) | Assembled girder steel seam line L shape mixing coupled wall and construction method thereof | |
| CN210596967U (en) | Set up prefabricated simple-supported box girder bridge of wet seam connecting piece of steel construction | |
| KR101710943B1 (en) | Precast Concrete(PC) deck slab for structure and manufacturing method thereof | |
| CN111608311B (en) | Large-span horizontal combined plate structure and preparation method thereof | |
| CN211646957U (en) | Assembled house ground reinforcing plate structure | |
| CN109868744B (en) | Full precast concrete bridge deck without cast-in-situ pavement layer | |
| CN104032859B (en) | Assembled L-shaped mixing coupled wall and construction method thereof | |
| CN104047380B (en) | Assembled girder steel seam T-shaped mixing coupled wall and construction method thereof | |
| KR20180094672A (en) | Precast Concrete(PC) deck plate having attachment and shear performance | |
| CN112502017A (en) | Durable web butt-joint type prefabricated combined beam bridge and construction method | |
| CN112593482A (en) | Prefabricated assembled concrete diaphragm structure and construction method | |
| CN111485490A (en) | Wide prefabricated bridge deck and construction method thereof | |
| CN219175544U (en) | Dry shear wall structure | |
| CN111005497A (en) | Assembled house ground reinforcing plate structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |