CN110924526A - Arc-shaped steel plate interface connection structure and connection method for reinforced concrete beam and column - Google Patents
Arc-shaped steel plate interface connection structure and connection method for reinforced concrete beam and column Download PDFInfo
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- CN110924526A CN110924526A CN201911106340.1A CN201911106340A CN110924526A CN 110924526 A CN110924526 A CN 110924526A CN 201911106340 A CN201911106340 A CN 201911106340A CN 110924526 A CN110924526 A CN 110924526A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 94
- 239000010959 steel Substances 0.000 title claims abstract description 94
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 110
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000004567 concrete Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000002788 crimping Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 4
- 210000002435 tendon Anatomy 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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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
- E04B1/18—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
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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
- E04B1/18—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
- E04B1/22—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 with parts being prestressed
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Abstract
The invention discloses an arc-shaped steel plate interface connecting structure and a connecting method of a reinforced concrete beam and a column. The bracket steel sleeve is formed by connecting two bracket arc panels, two groups of connecting welding plates and four groups of anchor lacing wires into a whole, and is embedded on the arc bracket of the column; the steel beam boot is an open steel sleeve surrounded by two side plates, a bottom plate, a top plate and a beam boot cambered plate, and the prefabricated beam is sleeved in the steel beam boot after assembly; the bracket steel sleeve and the steel beam boot are connected with each other by high-strength bolts pressing the bracket cambered plate and the beam boot cambered plate. The invention provides a connecting structure with a beam and a column which are more simplified and have excellent performance.
Description
Technical Field
The invention relates to an arc-shaped steel plate interface connecting structure and a connecting method of a reinforced concrete beam and a reinforced concrete column, which are assembled structural technologies in the field of constructional engineering.
Background
In recent years, with the increasing demands of people on living conditions and living environments, the construction industry has been rapidly developing. However, the development of the construction industry causes serious resource consumption and environmental pollution, and people are forced to seek new ways of the construction industry. Currently, building industrialization, which is characterized by prefabricated buildings, is one of the key ways for realizing low-carbon and sustainable development in the field of building industry.
In prefabricated buildings, the connection of structural elements has a crucial influence on the efficiency of the prefabrication and assembly work and the mechanical properties of service. The fabricated frame structure is the most suitable structural form in the current fabricated structure, and the connection of the frame beam and the column is the most basic and crucial connection part, and the connection performance (including prefabrication and assembly construction performance and structural working performance in use) influences the connection performance of the whole structure.
The existing assembly type reinforced concrete frame structure mainly adopts cast-in-place nodes to connect beam columns, prefabricated beam column components of the structure are exposed with reinforcing steel bars, formwork erecting and pouring are needed during field assembly connection, the prefabrication assembly efficiency is low, and the integrity of a connection interface is weak.
In addition, the prestressed assembly reinforced concrete frame structure is widely applied, and is a high-efficiency prefabricated assembly structure system. The system adopts local unbonded ribs to pre-press and connect the frame beams to the frame columns, simplifies the connection mode and ensures good shock resistance. However, the connection method of this structure has some disadvantages, mainly including: in order to facilitate the tensioning and anchoring operation of two ends of a post-tensioned prestressed tendon, the prestressed tendon is assembled by penetrating through the whole transverse or longitudinal multi-span frame beam, extending out side columns from the two ends and then performing tensioning and anchoring operation, so that great difficulty is brought to the tendon penetration, and meanwhile, the tensioning friction prestress loss is also overlarge; in the other existing prestressed assembly reinforced concrete frame structure, in order to facilitate beam penetration, the beam section in the local range on two sides of a beam-column joint is widened to form a local end face, then the beam is penetrated in the range and is tensioned and anchored on the local end face to form local prestressed assembly connection, but the frame beam is deformed to bring troubles to prefabrication and future use.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an arc-shaped steel plate interface connection structure and a connection method of a beam and a frame column of a reinforced concrete frame (comprising a prestressed concrete frame), which can realize a convenient dry connection mode and also provide good structural working performance, including a sliding friction energy dissipation function in the event of a large earthquake.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
an arc-shaped steel plate interface connection structure of a reinforced concrete beam and a column is characterized in that the column is a reinforced concrete prefabricated column with a conventional rectangular cross section, no rib is formed, no hole is reserved, the side face connected with the beam is kept continuous, an arc protrusion along the vertical direction is outwards bulged on each side face connected with the beam, two opposite arc protrusions form a bracket, the beam is a reinforced concrete prefabricated beam with a conventional rectangular cross section, no rib is formed, and no hole is reserved; the connecting structure comprises a bracket steel sleeve and a steel beam boot;
the bracket steel sleeve comprises two bracket arc panels, two groups of connecting welding plates and four groups of anchor lacing wires; the two bracket arc panels are respectively matched with the two arc bulges of the bracket in a fitting manner, a group of transverse connecting welding plates are welded on the side surface of each bracket arc panel, which is attached to the bracket, the positions of the two groups of connecting welding plates on the two bracket arc panels correspond to each other, and a row of screw holes are respectively formed in the upper side and the lower side of each bracket arc panel; the connecting welding plates are planar steel plates, the length of each connecting welding plate is the same as the width of the bracket arc panel, the number of the connecting welding plates in the same group is four, the connecting welding plates are distributed on the bracket arc panel in parallel from top to bottom, the uppermost connecting welding plate and the lowermost connecting welding plate are respectively flush with the top surface and the bottom surface of the bracket arc panel, the vertical distances between the two uppermost connecting welding plates and the upper row of screw holes are equal, and the vertical distances between the two lowermost connecting welding plates and the lower row of screw holes are equal; two ends of each anchor lacing wire are respectively welded on two opposite connecting welding plates on the two bracket arc panels, a group of anchor lacing wires are welded on the two opposite connecting welding plates on the two bracket arc panels, and the positions of all the anchor lacing wires are parallel and along the longitudinal axis direction of the beam; the connecting welding plate and the anchor lacing wire are embedded in the column;
the upper side and the lower side of the inside of the beam are respectively provided with a row of inner longitudinal ribs of the beam, the upper side and the lower side of one end of the beam, which faces the bracket, are respectively provided with a beam end anchor backing plate, the beam end anchor backing plate is provided with a round hole, the inner longitudinal ribs of the beam extend out of the end face of the beam, which faces the bracket, and penetrate through the corresponding round holes on the beam end anchor backing plate, and the beam, the inner longitudinal ribs of the beam and the beam end anchor backing plate are connected and fastened with a nut through a threaded structure at the end; a group of pre-embedded welding plates are respectively arranged on the top surface and the bottom surface of the beam;
the steel beam boot is an open steel sleeve which is formed by encircling two side plates, a bottom plate, a top plate and a beam boot cambered plate and is used for wrapping the cross section of the beam; the outer side surface of the beam boot arc panel is fitted with the bracket arc panel, a group of transverse stiffening ribs are arranged on the inner side surface of the beam boot arc panel, the top edge and the bottom edge of the beam boot arc panel are respectively welded with the corresponding edges of the top plate and the bottom plate, two side edges of the beam boot arc panel are respectively welded with the corresponding edges of the two side plates, sliding holes which are in one-to-one correspondence with the positions of the screw holes are arranged on the beam boot arc panel, and high-strength bolts penetrate through the corresponding screw holes and the corresponding sliding holes to fixedly connect the bracket arc panel and the beam boot arc panel; a row of end row plug welding holes and more than one row of distributed plug welding holes are respectively arranged on the bottom plate and the top plate, the positions of the end row plug welding holes correspond to the positions of the beam-end anchor backing plates, the positions of the distributed plug welding holes correspond to the positions of the embedded welding plates, and the distances between the two adjacent rows of distributed plug welding holes are equal; the top edges and the bottom edges of the two side plates are respectively welded with the corresponding edges of the top plate and the bottom plate.
Preferably, the vertical distance between the upper row of screw holes and the lower row of screw holes and the top edge and the bottom edge of the bracket arc panel is 50-100 mm.
Preferably, the thickness of the beam-end anchor backing plate along the length direction of the longitudinal bar in the beam is 30-50 mm.
Preferably, the embedded welding plate is an angle steel, the outer side surface of a horizontal flange of the angle steel is flush with the top surface or the bottom surface of the beam, a vertical flange of the angle steel is inserted into the beam, and an area, which is interfered by a longitudinal rib in the beam, on the vertical flange is grooved.
A connection method of an arc-shaped steel plate interface connection structure based on the reinforced concrete beam and the reinforced concrete column comprises the following steps:
(a) manufacturing a bracket arc panel and a beam boot arc panel, and crimping the bracket arc panel and the beam boot arc panel together by using a high-strength bolt;
(b) welding the stiffening ribs to the beam boot arc panel, and welding the connecting welding plate to the bracket arc panel;
(c) manufacturing a reinforcement cage in the column, and placing the reinforcement cage in the column template; wherein, the template at the bracket part is taken as a bracket arc panel;
(d) positioning and welding anchor lacing wires;
(e) pouring column concrete and finishing maintenance;
(f) welding a bottom plate and a side plate of the steel beam shoe to a beam shoe arc panel;
(g) manufacturing a reinforcement cage and an embedded welding plate in the beam, and placing the reinforcement cage and the embedded welding plate in the beam template;
(h) pouring beam concrete and finishing maintenance;
(i) sleeving a beam-end anchor backing plate on the beam-inner steel bar extending section, and then screwing a screw cap onto the screw thread of the beam-inner steel bar extending section;
(j) transporting the column assembly and the beam assembly to an assembly site, and mounting the column assembly in place;
(k) placing the beam assembly into a notch of the steel beam boot, and filling a gap between the beam and the steel beam boot with high-strength and micro-expansive mortar;
(l) Welding a top plate of the steel beam shoe to the arc-shaped plate and the side plate of the beam shoe;
(m) carrying out plug welding in the end row plug welding holes and the distributed plug welding holes on the steel beam boot top plate and the steel beam boot bottom plate to finish the assembly connection.
Another method for connecting an arc-shaped steel plate interface connection structure of a reinforced concrete beam and a column is based on the above method, and step (f) is placed after step (j).
Has the advantages that: the invention provides an arc-shaped steel plate interface connecting structure and a connecting method of a reinforced concrete beam and a reinforced concrete column, which are a connecting structure with more simplified beam and column and excellent performance, and compared with the prior art, the invention has the following advantages:
1. the prefabricated beam and the prefabricated column have regular shapes, no ribs and no holes, and bring convenience to links such as manufacturing, transportation, hoisting, installation and the like; the structure after the installation is finished also has a regular shape, so that convenience is brought to use;
2. the precision required by site hoisting in place is not high, and convenience is brought to hoisting in place; meanwhile, the assembly and installation of the beam and the column can be finished only by welding a top plate and a plurality of plug welding holes after the beam and the column are in place, so that convenience is brought to the assembly and installation;
3. the arc-shaped steel plate interface connection can ensure the excellent working performance of the beam-column joint under the action of earthquake, namely rigid working in small earthquake and sliding friction energy dissipation working in large earthquake; meanwhile, the steel plate interface has excellent wear resistance, so that the steel plate can still keep good friction energy dissipation performance under the action of repeated reciprocating sliding friction; in addition, compared with the connection of a reinforced concrete arc-shaped node, the bracket steel sleeve and the steel beam boot node have stronger local stress capacity, so that the beam end can be better protected from corner drop damage;
4. the bracket steel sleeve and the bracket are integrally cast together, so that a hole passage for penetrating the tendon after being reserved in the bracket is not needed, and the bracket part is not weakened; meanwhile, the anchor lacing wire horizontally penetrates through the bracket, so that the shearing resistance of the bracket is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a connection structure of a beam and a column;
FIG. 2 is a schematic structural view of a beam and a column;
FIG. 3 is a schematic structural diagram of a corbel steel sleeve;
FIG. 4 is a schematic view of a steel beam boot;
fig. 5 is a schematic structural view of the connection of the arc panels.
The figure includes: 1-column; 1-1-corbel; 2-beam; 2-1-beam inner longitudinal ribs; 2-2-beam end anchor backing plate; 2-3-screw cap; 2-4-pre-burying a welding plate; 3-corbel steel sleeve; 3-1-bracket arc panel; 3-2-screw holes; 3-3-connecting the welding plates; 3-4-anchor lacing wire; 4-steel beam boots; 4-1-side plate; 4-2-base plate; 4-3-top plate; 4-4-end plug welding holes; 4-5-distributed plug welding holes; 4-6-beam shoe arc panel; 4-7-a slide hole; 4-8-stiffeners; 5-high strength bolt.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figures 1-5, the arc-shaped steel plate interface connection structure of the reinforced concrete beam and the column realizes connection of the prefabricated column 1 and the beam 2 through the auxiliary bracket steel bushing 3 and the auxiliary steel beam boot 4.
The main body of the column 1 is a conventional reinforced concrete prefabricated column with a rectangular section, which is continuous at the connecting part with the beam 2 and is provided with a bracket which is outwards bulged at each side surface connected with the beam 2 and is arc-shaped along the vertical direction.
The bracket is provided with a bracket steel sleeve 3, and the bracket steel sleeve 3 consists of two bracket cambered plates 3-1, two groups of connecting welding plates 3-3 and four groups of anchor lacing wires 3-4.
The bracket arc panel 3-1 is a steel plate which is arc-shaped along the vertical direction, and the inner side of the bracket arc panel is just attached to the arc surface of the arc bracket; a row of screw holes 3-2 are arranged at the positions, away from the top surface and the bottom surface of the bracket arc panel 3-1, of a certain distance (preferably 50-100 mm), the positions of the screw holes 3-2 in each row are symmetrical and uniform (the number is preferably 2), the two screw holes 3-2 close to the two sides of the bracket arc panel 3-1 are appropriate in distance (preferably about 50 mm) from the center to the sides, and the diameters of the screw holes 3-2 are determined according to the diameter matching of bolts required by connection stress calculation.
Each group of the connecting welding plates 3-3 comprises four plane steel plates, the length of each plane steel plate is the same as the width of the bracket arc panel 3-1, the width is preferably about 50mm, and the thickness is preferably about 20 mm; the connecting welding plates 3-3 are connected to the inner side of the bracket arc panel 3-1 from top to bottom in a distributed mode in a welding mode, wherein the uppermost connecting welding plate 3-3 and the lowermost connecting welding plate 3-3 are respectively flush with the top surface and the bottom surface of the bracket arc panel 3-1, the vertical distances between the uppermost two connecting welding plates 3-3 and the upper row of screw holes 3-2 are equal, and the vertical distances between the lowermost two connecting welding plates 3-3 and the lower row of screw holes 3-2 are equal.
The anchor lacing wires 3-4 are preferably ribbed steel bars, the diameter and the number of each group of anchor lacing wires 3-4 are determined by calculation according to the connection stress, and the length is equal to the inner side distance of the two oppositely-arranged bracket arc panels 3-1; each pair of connecting welding plates 3-3 is provided with a group of anchor lacing wires 3-4 which are parallel to the longitudinal axis direction of the beam and are uniformly distributed, and the anchor lacing wires 3-4 are welded with the connecting welding plates 3-3.
The connecting welding plates 3-3 and the anchor lacing wires 3-4 are embedded in the column 1 and the bracket.
The main body of the beam 2 is a conventional reinforced concrete precast beam with a rectangular cross section, an upper group of beam inner longitudinal ribs 2-1 and a lower group of beam inner longitudinal ribs are arranged in the beam, and the beam end extends out of the beam 2 and penetrates through a round hole on the beam end anchor backing plate 2-2, and then is connected with a nut 2-3 through threads reserved at the end part of the beam end to be anchored to the beam end; and a group of embedded welding plates 2-4 (preferably two plates in each group) are respectively arranged on the top surface and the bottom surface of the beam 2.
The beam-end anchor backing plate 2-2 is two steel plates, the upper steel plate and the lower steel plate are respectively one, the length of the beam-end anchor backing plate is equal to the width of a beam end, and the thickness of the beam-end anchor backing plate is preferably 30-50 mm; the top surface of the upper beam-end anchor backing plate 2-2 is flush with the top surface of the beam end, and the bottom surface of the lower beam-end anchor backing plate 2-2 is flush with the bottom surface of the beam end; the beam-end anchor backing plate 2-2 is correspondingly provided with a round hole at the position of the longitudinal bar 2-1 in the beam to ensure that the longitudinal bar 2-1 in the beam smoothly passes through the round hole, and the center of the round hole is positioned in the middle of the width of the beam-end anchor backing plate 2-2 in the vertical direction.
The embedded welding plate 2-4 is preferably a section of angle steel, the top surface of a horizontal flange is flush with the top surface of the beam, a vertical flange is inserted into the beam, and a notch is formed at the position of the embedded welding plate, which is in contact with the inner longitudinal rib 2-1 of the beam, and the embedded welding plate is clamped on the inner longitudinal rib 2-1 of the beam; the pre-buried welded plates 2-4 are positioned in the middle of the beam in the width direction, and the size of the pre-buried welded plates in the width direction of the beam is preferably equal to the width minus 100mm of the beam; the longitudinal positions of the pre-buried welding plates 2-4 along the beam correspond to the positions of the distributed plug welding holes 4-5 on the steel beam boot 4.
The steel beam boot 4 is an open steel sleeve which is formed by encircling two side plates 4-1, a bottom plate 4-2, a top plate 4-3 and a beam boot cambered plate 4-6, and the opening is hollow to just wrap the cross section of the beam 2; one end of a beam shoe cambered plate 4-6 of the steel beam shoe 4 is in butt joint connection with the bracket steel sleeve 3; the beam 2 is inserted into the steel beam shoe 4, preferably for a length equal to the cross-sectional height of the beam 2.
The length of the bottom plate 4-2 and the top plate 4-3 along the longitudinal direction of the beam 2 is preferably equal to the height of the cross section of the beam plus 200 mm; a row of end row plug welding holes 4-4 and a plurality of rows (preferably two rows) of distributed plug welding holes 4-5 are respectively arranged on the bottom plate 4-2 and the top plate 4-3, and the diameters and the number of the distributed plug welding holes are determined by calculation according to the connection stress; the position of the end row plug welding holes 4-4 along the longitudinal direction of the beam corresponds to the anchor backing plate 2-2 at the beam end, and the end row plug welding holes are uniformly distributed in the width range of the bottom plate 4-2 or the top plate 4-3 along the transverse direction of the beam; the positions of the distributed plug welding holes 4-5 along the longitudinal direction of the beam are preferably 50mm closest to the opening end of the steel beam boot 4, and the rest plug welding holes are uniformly distributed between the distributed plug welding holes and the plug welding holes 4-4 at the end row.
The concave surface of the beam boot arc panel 4-6 faces the bracket arc panel 3-1 and is matched with the outer surface of the bracket arc panel 3-1; the convex surface faces the inside of the steel beam boot 4; the top edge and the bottom edge of the upper plate are respectively welded on the end edges of the top plate 4-3 and the bottom plate 4-2; a row of a plurality of (preferably two) rectangular sliding holes 4-7 which are symmetrical and uniformly distributed are respectively arranged at the upper part and the lower part of the beam boot arc panel 4-6, the horizontal width and the central position of the rectangular sliding holes correspond to the screw holes 3-2 on the bracket arc panel 3-1, and the vertical length of the rectangular sliding holes is preferably equal to the horizontal width plus 40 mm; the upper part and the lower part of the convex surface of the beam shoe arc panel 4-6 are respectively provided with a horizontal stiffening rib 4-8, the length of the stiffening rib 4-8 along the transverse direction of the beam is equal to the width of the cross section of the beam, and the width and the thickness of the stiffening rib 4-8 are respectively preferably 50mm and 10 mm; the clear distance of the stiffeners 4-8 from the edge of the slide hole 4-7 is preferably taken to be 20 mm.
The top edge and the bottom edge of the side plate 4-1 are respectively welded to the edges of the two sides of the top plate 4-3 and the bottom plate 4-2, and one side close to the beam shoe arc panel 4-6 is cut into an arc shape corresponding to the beam shoe arc panel 4-6 and is welded and connected.
And a high-strength bolt 5 is arranged in a sliding hole 4-7 which penetrates through a screw hole 3-2 of the bracket arc panel 3-1 and a beam boot arc surface 4-6.
A method for connecting an arc-shaped steel plate interface of a reinforced concrete beam and a reinforced concrete column comprises the following steps:
(a) manufacturing a bracket arc panel and a beam boot arc panel, and crimping the bracket arc panel and the beam boot arc panel together by using a high-strength bolt;
(b) welding the stiffening ribs to the beam boot arc panel, and welding the connecting welding plate to the bracket arc panel;
(c) manufacturing a reinforcement cage in the column, and placing the reinforcement cage in the column template; wherein, the template at the bracket part is taken as a bracket arc panel;
(d) positioning and welding anchor lacing wires;
(e) pouring column concrete and finishing maintenance;
(f) welding the bottom and side plates of the steel beam shoe to the shoe arc panel (this step may also be placed after step (j));
(g) manufacturing a reinforcement cage and an embedded welding plate in the beam, and placing the reinforcement cage and the embedded welding plate in the beam template;
(h) pouring beam concrete and finishing maintenance;
(i) sleeving a beam-end anchor backing plate on the beam-inner steel bar extending section, and then screwing a screw cap onto the screw thread of the beam-inner steel bar extending section;
(j) transporting the column assembly and the beam assembly to an assembly site, and mounting the column assembly in place;
(k) placing the beam assembly into a notch of the steel beam boot, and filling a gap between the beam and the steel beam boot with high-strength and micro-expansive mortar;
(l) Welding a top plate of the steel beam shoe to the arc-shaped plate and the side plate of the beam shoe;
(m) carrying out plug welding in the end row plug welding holes and the distributed plug welding holes on the steel beam boot top plate and the steel beam boot bottom plate to finish the assembly connection.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (6)
1. A reinforced concrete beam and column arc steel plate interface connection structure is characterized in that a column (1) is a reinforced concrete prefabricated column with a rectangular cross section, the side face connected with a beam (2) is kept continuous, an arc bulge bulges outwards bulge out from each side face connected with the beam (2), two opposite arc bulges form a bracket, and the beam (2) is a reinforced concrete prefabricated beam with a rectangular cross section; the method is characterized in that: the connecting structure comprises a bracket steel sleeve (3) and a steel beam boot (4);
the bracket steel sleeve (3) comprises two bracket arc panels (3-1), two groups of connecting welding plates (3-3) and four groups of anchor lacing wires (3-4); the two bracket arc panels (3-1) are respectively fit with the two arc bulges of the bracket in a fitting manner, a group of transverse connecting welding plates (3-3) are welded on the side surface of each bracket arc panel (3-1) which is attached to the bracket, the two groups of connecting welding plates (3-3) correspond to the positions of the two bracket arc panels (3-1), and a row of screw holes (3-2) are respectively arranged on the upper side and the lower side of each bracket arc panel (3-1); the connecting welding plates (3-3) are planar steel plates, the length of the connecting welding plates (3-3) is the same as the width of the bracket arc panel (3-1), the number of the connecting welding plates (3-3) in the same group is four, the connecting welding plates are distributed on the bracket arc panel (3-1) in parallel from top to bottom, the uppermost connecting welding plate (3-3) and the lowermost connecting welding plate (3-3) are respectively flush with the top surface and the bottom surface of the bracket arc panel (3-1), the vertical distances between the uppermost two connecting welding plates (3-3) and the upper row of screw holes (3-2) are equal, and the vertical distances between the lowermost two connecting welding plates (3-3) and the lower row of screw holes (3-2) are equal; two ends of each anchor lacing wire (3-4) are respectively welded on two opposite connecting welding plates (3-3) on the two bracket arc panels (3-1), a group of anchor lacing wires (3-4) are welded on the two opposite connecting welding plates (3-3) on the two bracket arc panels (3-1), and all the anchor lacing wires (3-4) are parallel and along the longitudinal axis direction of the beam; the connecting welding plate (3-3) and the anchor lacing wire (3-4) are pre-embedded in the column (1);
the upper side and the lower side in the beam (2) are respectively provided with a row of beam inner longitudinal ribs (2-1), the upper side and the lower side of one end of the beam (2) facing the bracket are respectively provided with a beam end anchor backing plate (2-2), the beam end anchor backing plate (2-2) is provided with a round hole, the beam inner longitudinal ribs (2-1) extend out of the end surface of the beam (2) facing the bracket and penetrate through the corresponding round holes in the beam end anchor backing plate (2-2), and the beam (2), the beam inner longitudinal ribs (2-1) and the beam end anchor backing plate (2-2) are connected and fastened with a nut through a threaded structure at the end part of the beam inner longitudinal ribs (2-1); a group of pre-buried welding plates (2-4) are respectively arranged on the top surface and the bottom surface of the beam (2);
the steel beam boot (4) is an open steel sleeve which is encircled by two side plates (4-1), a bottom plate (4-2), a top plate (4-3) and a beam boot cambered plate (4-6) and is used for wrapping the cross section of the beam (2); the outer side surface of the beam boot arc panel (4-6) is fitted with the bracket arc panel (3-1), the inner side surface of the beam boot arc panel (4-6) is provided with a group of transverse stiffening ribs (4-8), the top edge and the bottom edge of the beam boot arc panel (4-6) are respectively welded with the corresponding edges of the top plate (4-3) and the bottom plate (4-2), two side edges of the beam boot arc panel (4-6) are respectively welded with the corresponding edges of the two side plates (4-1), sliding holes (4-7) which are in one-to-one correspondence with the screw holes (3-2) are formed in the beam boot arc panel (4-6), and high-strength bolts (5) penetrate through the corresponding screw holes (3-2) and the corresponding sliding holes (4-7) to fixedly connect the bracket arc panel (3-1) and the beam boot arc panel (4-6); a row of end row plug welding holes (4-4) and more than one row of distributed plug welding holes (4-5) are respectively arranged on the bottom plate (4-2) and the top plate (4-3), the positions of the end row plug welding holes (4-4) correspond to the positions of the beam end anchor backing plates (2-2), the positions of the distributed plug welding holes (4-5) correspond to the positions of the embedded welding plates (2-4), and the distances between the two adjacent rows of distributed plug welding holes (4-5) are equal; the top edge and the bottom edge of the two side plates (4-1) are respectively welded with the corresponding edges of the top plate (4-3) and the bottom plate (4-2).
2. The arc-shaped steel plate interfacing structure of a reinforced concrete beam and column according to claim 1, wherein: the vertical distance between the upper row of screw holes (3-2) and the lower row of screw holes (3-2) and the top edge and the bottom edge of the bracket arc panel (3-1) is 50-100 mm.
3. The arc-shaped steel plate interfacing structure of a reinforced concrete beam and column according to claim 1, wherein: the thickness of the beam-end anchor backing plate (2-2) along the length direction of the longitudinal bar (2-1) in the beam is 30-50 mm.
4. The arc-shaped steel plate interfacing structure of a reinforced concrete beam and column according to claim 1, wherein: the embedded welding plates (2-4) are angle steels, the outer side faces of horizontal flanges of the angle steels are flush with the top surface or the bottom surface of the beam (2), vertical flanges of the angle steels are inserted into the beam (2), and grooves are formed in the areas, interfering with the longitudinal ribs (2-1) in the beam, on the vertical flanges.
5. A method for connecting an arc-shaped steel plate interface connecting structure of a reinforced concrete beam and a column based on any one of claims 1 to 5, is characterized in that: the method comprises the following steps:
(a) manufacturing a bracket arc panel and a beam boot arc panel, and crimping the bracket arc panel and the beam boot arc panel together by using a high-strength bolt;
(b) welding the stiffening ribs to the beam boot arc panel, and welding the connecting welding plate to the bracket arc panel;
(c) manufacturing a reinforcement cage in the column, and placing the reinforcement cage in the column template; wherein, the template at the bracket part is taken as a bracket arc panel;
(d) positioning and welding anchor lacing wires;
(e) pouring column concrete and finishing maintenance;
(f) welding a bottom plate and a side plate of the steel beam shoe to a beam shoe arc panel;
(g) manufacturing a reinforcement cage and an embedded welding plate in the beam, and placing the reinforcement cage and the embedded welding plate in the beam template;
(h) pouring beam concrete and finishing maintenance;
(i) sleeving a beam-end anchor backing plate on the beam-inner steel bar extending section, and screwing a screw cap onto the screw thread of the beam-inner steel bar extending section;
(j) transporting the column assembly and the beam assembly to an assembly site, and mounting the column assembly in place;
(k) placing the beam assembly into a notch of the steel beam boot, and filling a gap between the beam and the steel beam boot with mortar;
(l) Welding a top plate of the steel beam shoe to the arc-shaped plate and the side plate of the beam shoe;
(m) carrying out plug welding in the end row plug welding holes and the distributed plug welding holes on the steel beam boot top plate and the steel beam boot bottom plate to finish the assembly connection.
6. The connecting method according to claim 5, characterized in that: placing step (f) after step (j).
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