CN113463773A - Hoop, beam-column connecting structure comprising hoop and construction method of beam-column connecting structure - Google Patents
Hoop, beam-column connecting structure comprising hoop and construction method of beam-column connecting structure Download PDFInfo
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- CN113463773A CN113463773A CN202110819675.9A CN202110819675A CN113463773A CN 113463773 A CN113463773 A CN 113463773A CN 202110819675 A CN202110819675 A CN 202110819675A CN 113463773 A CN113463773 A CN 113463773A
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2448—Connections between open section profiles
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2463—Connections to foundations
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- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a hoop, a beam-column connecting structure comprising the hoop and a construction method of the beam-column connecting structure, wherein the inner end face of the hoop abuts against the outer end face of an existing column, one end bearing of a box-type steel beam is inserted into a steel beam socket reserved groove, and the other end of the box-type steel beam is arranged on a support short column; the bottom of the top plate of the underground structure is provided with a supporting frame, and the supporting frame is formed by connecting vertical concrete supporting columns and transverse concrete supporting columns; the bottom of the supporting short column is inserted on the intersection point of the vertical concrete supporting column and the transverse concrete supporting column and is coaxial with the vertical concrete supporting column of the supporting frame; the existing columns vertically penetrate through the top plate of the underground structure and extend at least 20cm out of the top plate of the underground structure. The invention enables the installation of the box-shaped steel beam and the existing column to be more convenient, solves the technical problem of low strength of the existing beam-column connecting node, provides the beam-column connecting structure with more stable structure, and provides powerful conditions for establishing a tower crane conversion foundation.
Description
Technical Field
The invention relates to the technical field of beam-column connecting structures, in particular to a hoop, a beam-column connecting structure comprising the hoop and a construction method of the beam-column connecting structure.
Background
Most of the existing beam-column connection structures are characterized in that a beam body is arranged on the side part of a column body, namely, a node is arranged on the column body, the middle part of the column body is disconnected, and the end part of the beam body is fixed on the node; if node joint strength is on the low side, very easily lead to node and cylinder and roof beam body connection site disconnection, influence the steadiness of structure then, this kind of connection structure is unfavorable for bearing the great electromechanical device of gravity, also is not favorable to the continuation development of building security.
In the existing building reconstruction project with an underground structure, the ground tower crane foundation cannot be arranged on the top plate of the underground structure due to some problems, for example, the bearing capacity of the top plate of the underground structure is insufficient; the next layer does not have the back-up supporting condition; or because the building seat operation, underground structure mostly is obstacles such as electromechanical professional system, partition wall, door leaf and leads to unable realization reinforcement or back to the top support etc.. Therefore, the establishment of a tower crane conversion foundation on the top plate of the underground structure is an effective way for solving the problems. The tower crane conversion foundation is set up, and the technical problem that the traditional beam column structure is poor in connection stability is solved.
Disclosure of Invention
The invention aims to provide a hoop, a beam-column connecting structure comprising the hoop and a construction method of the beam-column connecting structure, and solves the technical problem of how to utilize the hoop and a short supporting column to enable the beam-column connecting structure to be more stable, and the mechanical transmission path of the beam-column connecting structure in the prior art is effectively changed by converting the basic stress of the beam-column connecting structure.
In order to achieve the purpose, the invention provides a hoop which comprises an outer wrapping steel plate with a bracket, an outer wrapping steel plate with a stiffening rib, a pair of outer wrapping side steel plates, a steel beam baffle, a steel beam clamping unit, a first high-strength split bolt and a closed steel plate;
the clamping foundation, the pair of outer-wrapping side steel plates and the outer-wrapping steel plates with stiffening ribs are connected end to form a hollow cylinder; the top of the steel plate with the bracket is provided with a pair of steel beam baffles and a pair of steel beam clamping units, and the outer side of each steel beam baffle is vertically connected with a pair of baffle stiffening ribs; a steel beam socket reserved groove is formed between the pair of steel beam baffles;
the outer wrapping steel plate with the bracket comprises a bracket upper top plate, a bracket vertical plate, a bracket lower top plate, bracket supporting ribs and an adjusting base plate; the top parts of the plurality of bracket vertical plates which are arranged in parallel are provided with bracket upper top plates, and the bottom parts of the bracket vertical plates are provided with bracket lower top plates; the bottom of the bracket lower top plate is connected with a bracket supporting rib which is vertically arranged; an adjusting base plate is arranged on the upper end face of the upper top plate of the bracket;
the bracket vertical plate is sequentially provided with a bracket sealing plate, a column side bracket plate and a middle bracket plate from outside to inside; the bracket sealing plates are symmetrically arranged at two ends of the bracket upper top plate and the bracket lower top plate, the outer end surfaces of the bracket plates at the column edges are coplanar with the outer end surfaces of the existing columns, and the distance between the adjacent middle bracket plates is not more than one half of the distance between the bracket upper top plate and the bracket lower top plate;
the outer steel plate with the stiffening ribs is provided with transverse stiffening ribs and second side plate anti-slip ribs, the transverse stiffening ribs are fixedly connected with the outer end face of the outer steel plate with the stiffening ribs, and the two pairs of second side plate anti-slip ribs which are vertically arranged are fixedly connected with the upper flanging and the lower flanging of the outer steel plate with the stiffening ribs respectively;
the outsourcing side steel plate is provided with side plate stiffening ribs and first side plate anti-slip ribs, a plurality of transversely arranged side plate stiffening ribs are uniformly distributed on the outer end face of the outsourcing side steel plate, and the two pairs of first side plate anti-slip ribs are respectively and vertically connected with the turning times of the top and the bottom of the outsourcing side steel plate; the side panel stiffeners are all coplanar with the transverse stiffeners.
Further, the thickness of the side plate stiffening rib is the same as that of the transverse stiffening rib.
Further, girder steel joint unit is the shape of falling U, and it includes limiting plate and first high strong split bolt, and the limiting plate both sides are provided with rather than sliding connection's first high strong split bolt, and limiting plate is passed to first high strong split bolt one end, and the other end passes roof on the bracket to it is fixed through stop nut.
Furthermore, the limiting nut is a butterfly nut or a lifting ring nut.
Further, the distance between adjacent lateral plate stiffening ribs is not more than half of the distance between the steel plate wrapped with the bracket and the steel plate wrapped with the stiffening ribs.
Further, the limiting plate is a channel steel.
In addition, the invention also provides a beam-column connecting structure comprising the hoop, the inner end face of the hoop abuts against the outer end face of the existing column, one end of the box-type steel beam is inserted into the steel beam socket reserved groove and the steel beam clamping unit, and the other end of the box-type steel beam is arranged on the support short column; the bottom of the top plate of the underground structure is provided with a supporting frame, and the supporting frame is formed by connecting vertical concrete supporting columns and transverse concrete supporting columns; the bottom of the supporting short column is inserted on the intersection point of the vertical concrete supporting column and the transverse concrete supporting column and is coaxial with the vertical concrete supporting column of the supporting frame; the existing columns vertically penetrate through the top plate of the underground structure and extend at least 20cm out of the top plate of the underground structure.
Further, the existing column is a steel column or a concrete column.
Further, the supporting short column includes short column roof, vertical support column, short column base and short column floor, the vertical support column top is provided with short column roof, and the bottom is provided with short column base, and the side of vertical support short column top and bottom is equallyd divide and is distributed and have a plurality of short column floors, and this floor distributes along the lower terminal surface of short column roof and the up end of short column base.
Furthermore, the short column base comprises a base supporting plate and an inserted bar, one end of the inserted bar is vertically connected with the lower end face of the base supporting plate, and the other end of the inserted bar is inserted into the intersection point of the vertical concrete supporting column and the transverse concrete supporting column.
Furthermore, each side end face of the box-shaped steel beam is at least provided with 4 hoisting lug plates.
In addition, the invention also provides a construction method of the beam-column connecting structure comprising the hoop, which comprises the following steps.
The method comprises the following steps: measuring the vertical height between an underground structure top plate and a box-shaped steel beam to be installed on a construction site, and further determining the distance between middle corbel plates in a prefabricated corbel-containing outer-wrapping steel plate; and measuring the width and the length of the existing column, and further determining the position of the leg plate at the side of the center column of the prefabricated steel plate with the bracket outer wrapping.
Step two: prefabricating an outer wrapping steel plate with a bracket, an outer wrapping steel plate with a stiffening rib, a second high-strength split bolt, a closed steel plate, an outer wrapping side steel plate, a steel beam baffle, a steel beam clamping unit and an adjusting base plate in a factory; and performing antiseptic treatment.
Step three: and D, transporting the prefabricated part in the step two to a construction site.
Step four: installing an outer wrapping steel plate with a stiffening rib, a closed steel plate and an outer wrapping steel plate with a bracket on an existing column at least 20cm above a top plate of the underground structure; vertically welding a closed steel plate and an outer wrapping steel plate with a bracket to form a clamping foundation; and then, the closed steel plates symmetrically arranged on two sides of the existing column and the outer-coated steel plate with the stiffening ribs are tied and fixed by using second high-strength split bolts, the number of the second high-strength split bolts is 8, 4 second high-strength split bolts are arranged on each side of the existing column, and the second high-strength split bolts are uniformly distributed between the closed steel plates and the outer-coated steel plate with the stiffening ribs.
s 41: when the existing column is a steel column, the bracket support ribs are welded under the bracket outer wrapping steel plate discontinuously, the required welding seam length is calculated according to the worst load according to the number of the bracket support ribs, and the number of the bracket support ribs is determined.
s 42: when the existing column is a concrete column, installing bracket supporting ribs by adopting a punching and bar planting mode under the condition that a steel plate is wrapped outside the bracket; thereby solving the problem of anti-sliding of the steel plate wrapped outside the bracket.
Step five: installing an outer wrapping side steel plate; demolish two in the 4 second high-strength split bolts that existing post every side set up in step four, again with outsourcing side steel sheet socket joint in step four two second high-strength split screw rods and existing between the post in the below to outsourcing side steel sheet and existing post are leaned on mutually, then are interrupted the welding respectively on sealed steel sheet and take the outer steel sheet of wrapping with stiffening rib with outsourcing side steel sheet both ends and are gone up the end to end and constitute the cavity cylinder, and then joint basis, a pair of outsourcing side steel sheet and take the outer steel sheet of wrapping with stiffening rib end to end.
Step six: and (5) reinstalling the two second high-strength counter-pulling screws dismantled in the step (5).
Step seven: welding a side plate stiffening rib; welding side plate stiffening ribs on the outer end surfaces of the pair of outer-coated side steel plates; and the distance between the stiffening ribs of the adjacent side plates is not more than one half of the distance between the steel plate wrapped with the bracket and the steel plate wrapped with the stiffening ribs.
Step eight: and welding the anti-sliding rib of the first side plate.
s 81: when the existing column is a steel column, the first side plate anti-sliding ribs are welded at the bottom of the outer-wrapping side steel plate in an interrupted mode, the welding seam length is calculated according to the side worst load through the quantity calculation of the first side plate anti-sliding ribs, and the quantity of the side plate anti-sliding ribs is determined.
s 82: when the existing column is a concrete column, installing first side plate anti-sliding ribs at the bottom and the top of the outer side steel plate in a punching and bar planting mode; thereby solving the problem of anti-sliding of the outer side steel plate.
Step nine: the steel beam baffle is welded to the bracket upper end face bilateral symmetry of taking bracket outsourcing steel sheet and is interrupted welding steel beam baffle to with the outer terminal surface of steel beam baffle welding at the closed steel sheet, baffle stiffening rib is interrupted and is welded in steel beam baffle outer terminal surface and bracket upper end face of top plate. The distance between a pair of steel beam baffles is determined according to the width of the box-type steel beam.
Step ten: and (4) performing full welding on the intermittent welding in the fourth step, the fifth step, the eighth step and the ninth step, filling a crack pouring adhesive into the welding seams, and completely disassembling the second high-strength counter-pulling screw rod.
Step eleven: mounting a supporting short column; placing a supporting short column above a top plate of an underground structure, presetting a socket at the intersection point of a vertical concrete supporting column and a transverse concrete supporting column, and inserting a base of the supporting short column into the socket; the height of the supporting short column is determined according to the installation height of the hoop, and the error between the upper end face of the supporting short column and the upper top plate of the bracket is guaranteed to be within 2 cm.
Step twelve: hoisting one end of the box-shaped steel beam in the steel beam socket reserved groove, and installing the other end of the box-shaped steel beam above the short column top plate; and an adjusting base plate is arranged between the upper end surface of the upper top plate of the bracket and the lower end surface of the box-shaped steel beam, and the adjusting base plate is welded on the upper end surface of the upper top plate of the bracket.
Step thirteen: mounting a steel beam clamping unit; the limiting plates are placed at the tops of the box-shaped steel beams, the first high-strength counter-pulling screw vertically penetrates through the limiting plates and the upper top plate of the bracket, and finally the limiting plates and the upper top plate of the bracket are fixed in a pulling mode through the limiting nuts. Thereby preventing the box-shaped steel beam from moving up and down.
The invention has the advantages of being beneficial to the realization of the invention.
According to the hoop, the beam-column connecting structure comprising the hoop and the construction method of the beam-column connecting structure, the bracket supporting ribs arranged on the bracket-wrapped steel plate, the first side plate anti-sliding ribs arranged on the wrapping side steel plate and the second side plate anti-sliding ribs arranged on the stiffening rib-wrapped steel plate are matched for use, so that the problem of sliding of the hoop is solved, and meanwhile, the connection between the hoop and an existing column is more stable.
According to the hoop, the beam-column connecting structure comprising the hoop and the construction method of the beam-column connecting structure, provided by the invention, the pair of first high-strength counter-pulling bolts in each steel beam clamping unit is matched with the limiting plate, so that the technical problem that the mounted box-shaped steel beam moves up and down can be effectively solved, and meanwhile, the box-shaped steel beam and the outer steel plate with the bracket are fixed by utilizing the first high-strength counter-pulling screws in a pulling mode, so that the box-shaped steel beam is more stably fixed.
According to the anchor ear, the beam-column connecting structure comprising the anchor ear and the construction method of the beam-column connecting structure, provided by the invention, the bottom of the supporting short column is inserted at the intersection point of the vertical concrete supporting column and the transverse concrete supporting column, so that the supporting short column can be better fixed on a top plate of an underground structure, and the stability of the box-type steel beam is further improved.
4, the hoop, the beam column connecting structure comprising the same and the construction method thereof provided by the invention have the advantages that the hoop enables the box-type steel beam to be quickly matched and spliced with the column body, the integral structural performance of the existing column is not damaged, the hoop is suitable for field assembly, a box-type structure is formed, the rigidity of the beam column node is increased, the integrity of the node is enhanced, the bearing capacity of the node is improved, the shearing resistance of the node is effectively improved, the side plate stiffening ribs and the transverse stiffening ribs are arranged in an aligned mode, a high-strength supporting structure can be formed in the transverse direction, the bending moment, the shearing force and the axial force borne by the beam body can be quickly and effectively transmitted, and the stress of the node is more definite. The beam column joint (connecting structure) is convenient to install and environment-friendly, so that the operations such as field cutting operation and the like are reduced, and the construction cost can be reduced.
According to the hoop, the beam-column connecting structure comprising the hoop and the construction method of the beam-column connecting structure, provided by the invention, the connection of the beam-column is realized by utilizing the hoop, so that the load of the existing column can be improved, and the existing column has higher strength; the invention has low maintenance cost; saving construction period and cost and being beneficial to the promotion of green construction.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic front view of a beam-column connection structure node including a hoop according to the present invention.
Fig. 2 is a right-view schematic diagram of a beam-column connecting structure node including a hoop according to the present invention.
Fig. 3 is a schematic structural diagram of the hoop in the invention.
Fig. 4 is a schematic structural view of a beam-column connection structure including a hoop according to the present invention.
Fig. 5 is a schematic cross-sectional view of a beam-column connection structure including a hoop according to the present invention.
Fig. 6 is a partially enlarged schematic view at a in fig. 4.
Fig. 7 is an installation schematic diagram of a fourth step in the beam-column connection structure node including the hoop according to the present invention.
Fig. 8 is a schematic view of the installation of s41 in step four in the beam-column connecting structure node including the hoop according to the present invention.
Fig. 9 is an installation schematic diagram of the fifth step in the beam-column connection structure node including the hoop according to the present invention.
Fig. 10 is an installation diagram of the beam-column connection structure node including the hoop in the sixth step.
Fig. 11 is a schematic installation diagram of step seven in the beam-column connection structure node including the hoop according to the present invention.
Fig. 12 is an installation schematic diagram of step eight in the beam-column connection structure node including the hoop according to the present invention.
Fig. 13 is an installation diagram of step nine in the beam-column connection structure node including the hoop according to the present invention.
Reference numerals: 1-existing column, 2-bracket-carrying outer-wrapping steel plate, 3-reinforcing-rib-carrying outer-wrapping steel plate, 4-first high-strength split bolt, 5-bracket supporting rib, 6-outer-wrapping side steel plate, 7-side plate reinforcing rib, 8-steel beam baffle, 9-baffle reinforcing rib, 10-limiting plate, 11-box-shaped steel beam, 12-first side plate anti-slip rib, 13-bracket upper top plate, 14-bracket vertical plate, 15-bracket lower top plate, 16-bracket closing plate, 17-column-edge bracket plate, 18-middle bracket plate, 19-transverse reinforcing rib, 20-second side plate anti-slip rib, 21-sealing steel plate, 22-second high-strength split bolt, 23-adjusting base plate, 24-underground structure top plate, 25-supporting short column, 26-short column top plate, 27-vertical supporting column, 28-short column base, 29-short column rib plate, 30-vertical concrete supporting column, 31-transverse concrete supporting column and 32-inserted rod.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and illustrating the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
As shown in fig. 3, the present invention provides a hoop, which comprises an outer wrapping steel plate 2 with a bracket, an outer wrapping steel plate 3 with a stiffening rib, a pair of outer wrapping side steel plates 6, a steel beam baffle 8, a steel beam clamping unit, a first high-strength split bolt 4 and a closed steel plate 21;
the clamping foundation, the pair of outer-coated side steel plates 6 and the outer-coated steel plates 3 with the stiffening ribs are connected end to form a hollow cylinder; the top of the steel plate 2 with the bracket is provided with a pair of steel beam baffles 8 and a pair of steel beam clamping units, and the outer side of each steel beam baffle 8 is vertically connected with a pair of baffle stiffening ribs 9; a steel beam socket reserved groove is formed between the pair of steel beam baffles 8;
the outer wrapping steel plate 2 with the bracket comprises a bracket upper top plate 13, a bracket vertical plate 14, a bracket lower top plate 15, bracket supporting ribs 5 and an adjusting cushion plate 23; the top parts of a plurality of bracket vertical plates 14 which are arranged in parallel are provided with bracket upper top plates 13, and the bottom parts of the bracket vertical plates are provided with bracket lower top plates 15; the bottom of the bracket lower top plate 15 is connected with a bracket supporting rib 5 which is vertically arranged; an adjusting cushion plate 23 is arranged on the upper end surface of the bracket upper top plate 13;
the bracket vertical plate 14 is provided with a bracket sealing plate 16, a column side bracket plate 17 and a middle bracket plate 18 in sequence from outside to inside; the bracket seal plates 16 are symmetrically arranged at two ends of the bracket upper top plate 13 and the bracket lower top plate 15, the outer end surfaces of the bracket plates 17 at the column edges are coplanar with the outer end surfaces of the existing columns 1, and the distance between the adjacent middle bracket plates 18 is not more than one half of the distance between the bracket upper top plate 13 and the bracket lower top plate 15;
the outer steel plate 3 with the stiffening ribs is provided with transverse stiffening ribs 19 and second side plate anti-slip ribs 20, the transverse stiffening ribs 19 are fixedly connected with the outer end face of the outer steel plate 3 with the stiffening ribs, and the two pairs of second side plate anti-slip ribs 20 which are vertically arranged are fixedly connected with the upper flanging and the lower flanging of the outer steel plate 3 with the stiffening ribs respectively;
the outsourcing side steel plate 6 is provided with side plate stiffening ribs 7 and first side plate anti-slip ribs 12, the plurality of transversely arranged side plate stiffening ribs 7 are uniformly distributed on the outer end face of the outsourcing side steel plate 6, and the two pairs of first side plate anti-slip ribs 12 are respectively and vertically connected with the top and the bottom of the outsourcing side steel plate 6; the side panel stiffeners 7 are all coplanar with the transverse stiffeners 19. The thickness of the side panel stiffener 7 is the same as the thickness of the transverse stiffener 19, and the end of the side panel stiffener 7 is aligned with the end of the transverse stiffener 19. The high-strength supporting structure can be transversely formed, and the bending moment, the shearing force and the axial force borne by the beam body can be quickly and effectively transmitted, so that the stress of the node is more definite. The distance between the adjacent side plate stiffening ribs 7 is not more than one half of the distance between the steel plate with bracket and the steel plate 3 with stiffening ribs.
The steel beam clamping unit is in an inverted U shape and comprises a limiting plate 10 and first high-strength split bolts 4, the first high-strength split bolts 4 connected with the limiting plate 10 in a sliding mode are arranged on two sides of the limiting plate 10, one end of each first high-strength split bolt 4 penetrates through the limiting plate 10, the other end of each first high-strength split bolt 4 penetrates through an upper bracket top plate 13 and is fixed through a limiting nut, and the limiting nut is a butterfly nut or a lifting ring nut, so that a constructor can conveniently rotate and twist the steel beam clamping unit; the limiting nut can also be provided with a locking device or a device for limiting the rotation of the limiting nut (after the constructor screws to achieve the drawknot fixation, the locking device or the device for limiting the rotation of the limiting nut is started), so that the limiting nut is prevented from rotating. And because the limiting plate 10 is a channel steel, the rotation of the limiting nut in a limited space can be limited, and the inner width of the channel steel can be set to be 2-3 mm wider than the widest part of the butterfly nut or the lifting ring nut. Girder steel joint unit can effectively prevent the technical problem that 11 box girder steels after the installation reciprocate, utilizes first high-strength to drawing the screw rod drawknot fixed between 11 box girder steels and the area bracket outsourcing steel sheet 2 simultaneously, and then makes 11 box girder steels's fixed more stable.
The anti rib 12 that slides of the first curb plate that sets up on bracket support rib 5, the outsourcing steel sheet 6 that set up on taking bracket outsourcing steel sheet 2 and the anti rib 20 cooperation that slides of the second curb plate that sets up on taking stiffening rib outsourcing steel sheet 3 use, have solved the problem of sliding of staple bolt, make the staple bolt more firm with being connected of existing post 1 simultaneously.
As shown in fig. 1-2 and fig. 4-6, the present invention provides a beam-column connection structure comprising an anchor ear, wherein the inner end surface of the anchor ear abuts against the outer end surface of the existing column 1, one end of a box-type steel beam 11 is inserted into the steel beam insertion and reservation groove and the steel beam clamping unit, and the other end is arranged on a support short column 25; the existing column 1 is a steel column or a concrete column; the four side end faces of the box-shaped steel beam 11 are provided with 4 lifting lug plates, so that the box-shaped steel beam 11 can be conveniently lifted to a preset position, and the lifting process is more stable due to the 4 lifting lug plates; the bottom of the top plate 24 of the underground structure is provided with a support frame, and the support frame is formed by connecting vertical concrete support columns 30 and transverse concrete support columns 31; the supporting short column 25 is arranged above the top plate 24 of the underground structure, the bottom of the supporting short column 25 is inserted and connected to the intersection point of the vertical concrete supporting column 30 and the transverse concrete supporting column 31, and the supporting short column is coaxial with the vertical concrete supporting column 30 of the supporting frame; the existing column 1 passes vertically through the underground structure roof 24 and extends at least 20cm beyond the underground structure roof 24.
The supporting short column 25 comprises a short column top plate 26, a vertical supporting column 27, a short column base 28 and short column rib plates 29, wherein the short column top plate 26 is arranged at the top of the vertical supporting column 27, the short column base 28 is arranged at the bottom of the vertical supporting column 27, and a plurality of short column rib plates 29 are distributed on the side surfaces of the top and the bottom of the vertical supporting short column 25 and are distributed along the lower end surface of the short column top plate 26 and the upper end surface of the short column base 28. The short column base 28 comprises a base support plate and an insert rod 32, one end of the insert rod 32 is vertically connected with the lower end face of the base support plate, and the other end of the insert rod is inserted on the intersection point of the vertical concrete support column 30 and the transverse concrete support column 31. The supporting short columns 25 can be better fixed on the top plate 24 of the underground structure, and the stability of the box-shaped steel beam 11 is further improved.
The staple bolt makes box girder steel 11 can be installed with the cylinder adaptation grafting fast, does not destroy the holistic structural performance of existing post 1, is fit for the field assembly, forms box structure, has increased the rigidity of beam column node for the node wholeness reinforcing has improved the bearing capacity of node, has effectively improved the ability of shearing of node. The beam column joint (connecting structure) is convenient to install and environment-friendly, so that the operations such as field cutting operation and the like are reduced, and the construction cost can be reduced.
In addition, as shown in fig. 7 to 13, the invention also provides a construction method of the beam-column connection structure including the hoop, and the steps are as follows.
Excavating the position to be constructed, and excavating the backfill soil above the top plate 24 of the underground structure; excavating with the existing column 1 as the center, and excavating a foundation pit with the area of 1.5 square meters; excavating a foundation pit with the area of 1.5 square meters at a position which is parallel to the existing column 1 and corresponds to the length of the box-shaped steel beam 11 to be installed; the number of the foundation pits is 4, and the depth of each foundation pit is 10 cm-30 cm; cleaning the top plate 24 of the underground structure and roughening; the surface of the existing column 1 is cleaned, and the fireproof coating is ground off.
The method comprises the following steps: measuring the vertical height between an underground structure top plate 24 and a box-shaped steel beam 11 to be installed at a construction site, and further determining the distance between middle corbel plates in the prefabricated corbel-containing outer-coated steel plate 2; the width and length of the existing column 1 are measured, and the position of the column side corbel plate 17 in the prefabricated outer wrapping steel plate with corbel 2 is determined.
Step two: prefabricating an outer wrapping steel plate 2 with a bracket, an outer wrapping steel plate 3 with a stiffening rib, a second high-strength split bolt 22, a sealing steel plate 21, an outer wrapping side steel plate 6, a steel beam baffle plate 8, a steel beam clamping unit and an adjusting base plate 23 in a factory; and performing antiseptic treatment.
Step three: and D, transporting the prefabricated part in the step two to a construction site.
Step four: installing a stiffening rib-provided outer wrapping steel plate 3, a closed steel plate 21 and a corbel-provided outer wrapping steel plate 2 on an existing column 1 at least 20cm above a top plate 24 of an underground structure; vertically welding the closed steel plate 21 and the outer wrapping steel plate 2 with the bracket to form a clamping foundation; and then, the closed steel plates 21 symmetrically arranged at two sides of the existing column 1 and the outer-wrapping steel plates 3 with the stiffening ribs are tied and fixed by using second high-strength split bolts 22, the number of the second high-strength split bolts 22 is totally 8, 4 bolts are arranged at each side of the existing column 1, and the second high-strength split bolts are uniformly distributed between the closed steel plates 21 and the outer-wrapping steel plates 3 with the stiffening ribs.
s 41: when the existing column 1 is a steel column, the bracket support ribs 5 are welded under the bracket outer-wrapping steel plate discontinuously, the required welding seam length is calculated according to the worst load by calculating the number of the bracket support ribs 5, and the number of the bracket support ribs 5 is determined.
s 42: when the existing column 1 is a concrete column, the bracket supporting ribs 5 are installed under the steel plate 2 wrapped outside the bracket in a punching and bar planting mode; thereby solving the anti-sliding problem of the steel plate 2 wrapped outside the bracket.
Step five: installing an outer-wrapping side steel plate 6; two pieces of the upper part of 4 second high-strength split bolts 22 arranged on each side of the existing column 1 in the fourth step are dismantled, then the outsourcing side steel plate 6 is inserted between the two second high-strength split screw rods below the four steps and the existing column 1, the outsourcing side steel plate 6 abuts against the existing column 1, then the two ends of the outsourcing side steel plate 6 are welded on the closed steel plate 21 and the outsourcing steel plate 3 with the stiffening ribs in a discontinuous mode respectively, and the base, the pair of outsourcing side steel plates 6 and the outsourcing steel plate 3 with the stiffening ribs are connected end to form a hollow column.
Step six: and (5) reinstalling the two second high-strength counter-pulling screws dismantled in the step (5).
Step seven: welding the side plate stiffening ribs 7; welding side plate stiffening ribs 7 on the outer end surfaces of the pair of outer-coated side steel plates 6; and ensure that the distance between the adjacent lateral plate stiffening ribs 7 is not more than one half of the distance between the steel plate with bracket and the steel plate 3 with stiffening ribs.
Step eight: and welding the first side plate anti-slip ribs 12.
s 81: when existing post 1 is the steel column, be interrupted the welding in 6 bottoms outsourcing side steel plates with first curb plate anti-sliding rib 12, the quantity calculation of first curb plate anti-sliding rib 12 should calculate the welding seam length according to the most unfavorable load in side direction, confirms the number of curb plate anti-sliding rib.
s 82: when the existing column 1 is a concrete column, the first side plate anti-sliding ribs 12 are arranged at the bottom and the top of the outer side steel plate 6 in a punching and bar planting mode; thereby solving the problem of anti-sliding of the outer side steel plate 6.
Step nine: the steel beam baffle 8 is welded to 13 up end bilateral symmetry of roof on taking bracket outsourcing steel sheet 2's bracket to with the outer terminal surface of steel beam baffle 8 welding at sealed steel sheet 21, baffle stiffening rib 9 is interrupted and is welded in 13 up end of roof on steel beam baffle 8 outer terminal surface and the bracket. The distance between the pair of steel beam fenders 8 is determined according to the width of the box-type steel beam 11.
Step ten: and (4) performing full welding on the intermittent welding in the fourth step, the fifth step, the eighth step and the ninth step, filling a crack pouring adhesive into the welding seams, and completely disassembling the second high-strength counter-pulling screw rod.
Step eleven: mounting the support stub 25; placing a supporting short column 25 above a top plate 24 of an underground structure, presetting a socket at the intersection point of a vertical concrete supporting column 30 and a transverse concrete supporting column 31, and inserting the base of the supporting short column 25 into the socket; the height of the supporting short column 25 is determined according to the installation height of the hoop, and the error between the upper end face of the supporting short column 25 and the upper top plate 13 of the bracket is ensured to be within 2 cm.
Step twelve: one end of the box-shaped steel beam 11 is hoisted in the steel beam socket reserved groove, and the other end of the box-shaped steel beam is installed above the short column top plate 26; and an adjusting shim plate 23 is arranged between the upper end surface of the bracket upper top plate 13 and the lower end surface of the box-shaped steel beam 11, and the adjusting shim plate 23 is welded on the upper end surface of the bracket upper top plate 13.
Step thirteen: mounting a steel beam clamping unit; the limiting plate 10 is placed at the top of the box-shaped steel beam 11, the first high-strength counter-pulling screw rod vertically penetrates through the limiting plate 10 and the top plate 13 on the bracket, and finally the limiting plate 10 and the top plate 13 on the bracket are fixed in a pulling mode through the limiting nut. Thereby preventing the box-shaped steel beam 11 from moving up and down.
And (4) pouring a foundation pit, and after the strength of the poured concrete reaches the standard, performing waterproof treatment, installing a surface decorative layer and the like.
The invention realizes the connection of the beam column by utilizing the hoop, can improve the load of the existing column 1 and enables the existing column to have higher strength; the invention has low maintenance cost; saving construction period and cost and being beneficial to the promotion of green construction.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a staple bolt which characterized in that: the steel beam clamping device comprises an outer wrapping steel plate (2) with a bracket, an outer wrapping steel plate (3) with a stiffening rib, a pair of outer wrapping side steel plates (6), a steel beam baffle plate (8), a steel beam clamping unit, a first high-strength split bolt (4) and a closed steel plate (21);
the clamping foundation is formed by vertically connecting the outer wrapping steel plate (2) with the bracket and the closed steel plate (21), one end of a pair of outer wrapping side steel plates (6) which are symmetrically arranged is connected with the clamping foundation, the other end of the pair of outer wrapping side steel plates is connected with the outer wrapping steel plate (3) with the stiffening rib, and the clamping foundation, the pair of outer wrapping side steel plates (6) and the outer wrapping steel plate (3) with the stiffening rib are connected end to form a hollow cylinder; the top of the steel plate (2) with the bracket is provided with a pair of steel beam baffles (8) and a pair of steel beam clamping units, and the outer side of each steel beam baffle (8) is vertically connected with a pair of baffle stiffening ribs (9); a steel beam socket reserved groove is formed between the pair of steel beam baffles (8);
the outer wrapping steel plate (2) with the bracket comprises a bracket upper top plate (13), a bracket vertical plate (14), a bracket lower top plate (15), bracket supporting ribs (5) and an adjusting base plate (23); the top parts of a plurality of bracket vertical plates (14) which are arranged in parallel are provided with bracket upper top plates (13), and the bottom parts of the bracket vertical plates are provided with bracket lower top plates (15); the bottom of the bracket lower top plate (15) is connected with a bracket supporting rib (5) which is vertically arranged; an adjusting shim plate (23) is arranged on the upper end face of the upper top plate (13) of the bracket;
a bracket vertical plate (14) is sequentially provided with a bracket sealing plate (16), a column side bracket plate (17) and a middle bracket plate (18) from outside to inside; the bracket seal plates (16) are symmetrically arranged at two ends of the bracket upper top plate (13) and the bracket lower top plate (15), the outer end face of the bracket plate (17) at the column edge is coplanar with the outer end face of the existing column (1), and the distance between the adjacent middle bracket plates (18) is not more than one half of the distance between the bracket upper top plate (13) and the bracket lower top plate (15);
the steel plate (3) with the stiffening ribs is provided with transverse stiffening ribs (19) and second side plate anti-sliding ribs (20), the transverse stiffening ribs (19) are fixedly connected with the outer end face of the steel plate (3) with the stiffening ribs, and the two pairs of second side plate anti-sliding ribs (20) which are vertically arranged are fixedly connected with the upper flanging and the lower flanging of the steel plate (3) with the stiffening ribs respectively;
the outsourcing side steel plate (6) is provided with side plate stiffening ribs (7) and first side plate anti-slip ribs (12), the plurality of transversely arranged side plate stiffening ribs (7) are uniformly distributed on the outer end face of the outsourcing side steel plate (6), and the two pairs of first side plate anti-slip ribs (12) are respectively and vertically connected with the turning-over of the top and the bottom of the outsourcing side steel plate (6); the side panel stiffeners (7) are all coplanar with the transverse stiffeners (19).
2. The hoop of claim 1, wherein: the thickness of the side plate stiffening rib (7) is the same as that of the transverse stiffening rib (19).
3. The hoop of claim 2, wherein: the steel beam clamping unit is in an inverted U shape and comprises a limiting plate (10) and a first high-strength split bolt (4), the limiting plate (10) is provided with the first high-strength split bolt (4) in sliding connection with the limiting plate, one end of the first high-strength split bolt (4) penetrates through the limiting plate (10), and the other end of the first high-strength split bolt penetrates through a top plate (13) on the bracket and is fixed through a limiting nut.
4. A hoop as claimed in claim 3, wherein: the distance between the adjacent side plate stiffening ribs (7) is not more than one half of the distance between the steel plate (2) with the bracket and the steel plate (3) with the stiffening ribs.
5. The beam column connection structure comprising the hoop according to any one of claims 1 to 4, wherein: the inner end face of the hoop abuts against the outer end face of the existing column (1), one end of the box-shaped steel beam (11) is inserted in the steel beam insertion reserved groove, and the other end of the box-shaped steel beam is arranged on the support short column (25); the bottom of the top plate (24) of the underground structure is provided with a supporting frame, and the supporting frame is formed by connecting vertical concrete supporting columns (30) and transverse concrete supporting columns (31); the supporting short column (25) is arranged above a top plate (24) of the underground structure, the bottom of the supporting short column (25) is inserted at the intersection point of the vertical concrete supporting column (30) and the transverse concrete supporting column (31) and is coaxial with the vertical concrete supporting column (30) of the supporting frame; the existing column (1) vertically penetrates through the top plate (24) of the underground structure and extends out of the top plate (24) of the underground structure by at least 20 cm.
6. The beam-column connecting structure according to claim 5, wherein: the supporting short column (25) comprises a short column top plate (26), a vertical supporting column (27), a short column base (28) and short column rib plates (29), wherein the short column top plate (26) is arranged at the top of the vertical supporting column (27), the short column base (28) is arranged at the bottom of the vertical supporting short column (25), a plurality of short column rib plates (29) are uniformly distributed on the top and the bottom of the vertical supporting short column (25), and the rib plates are distributed along the lower end face of the short column top plate (26) and the upper end face of the short column base (28).
7. A beam-column connecting structure according to claim 6, wherein: the short column base (28) comprises a base supporting plate and an inserting rod (32), one end of the inserting rod (32) is vertically connected with the lower end face of the base supporting plate, and the other end of the inserting rod is inserted into an intersection point of the vertical concrete supporting column (30) and the transverse concrete supporting column (31).
8. A beam-column connecting structure according to claim 7, wherein: each side end face of the box-shaped steel beam (11) is at least provided with 4 hoisting lug plates.
9. A construction method of a beam column connection structure according to any one of claims 5 to 8, characterized in that: comprises the following steps:
the method comprises the following steps: measuring the vertical height between an underground structure top plate (24) and a box-shaped steel beam (11) to be installed on a construction site, and further determining the distance between middle corbel plates in a prefabricated corbel-carrying external steel plate (2); measuring the width and the length of the existing column (1) so as to determine the position of a bracket plate (17) at the side of the middle column of the prefabricated bracket-wrapped steel plate (2);
step two: prefabricating an outer wrapping steel plate (2) with a bracket, an outer wrapping steel plate (3) with a stiffening rib, a second high-strength split bolt (22), a sealing steel plate (21), an outer wrapping side steel plate (6), a steel beam baffle plate (8), a steel beam clamping unit and an adjusting base plate (23) in a factory; and carrying out antiseptic treatment;
step three: transporting the prefabricated part in the second step to a construction site;
step four: installing an outer-wrapped steel plate (3) with a stiffening rib, a closed steel plate (21) and an outer-wrapped steel plate (2) with a bracket on an existing column (1) at least 20cm above a top plate (24) of an underground structure; vertically welding the closed steel plate (21) and the steel plate (2) with the bracket to form a clamping foundation; then, the closed steel plates (21) symmetrically arranged on two sides of the existing column (1) and the outer wrapping steel plates (3) with the stiffening ribs are tied and fixed by using second high-strength split bolts (22), the number of the second high-strength split bolts (22) is 8, 4 are arranged on each side of the existing column (1), and the second high-strength split bolts are uniformly distributed between the closed steel plates (21) and the outer wrapping steel plates (3) with the stiffening ribs;
s 41: when the existing column (1) is a steel column, the bracket support ribs (5) are discontinuously welded under a bracket outer-wrapped steel plate, the length of the required welding line is calculated according to the worst load by calculating the number of the bracket support ribs (5), and the number of the bracket support ribs (5) is determined;
s 42: when the existing column (1) is a concrete column, the bracket supporting ribs (5) are installed under the steel plate (2) wrapped outside the bracket in a punching and bar planting mode;
step five: installing an outer-wrapping side steel plate (6); removing two upper parts of 4 second high-strength split bolts (22) arranged on each side of the existing column (1) in the fourth step, inserting an outer-coated side steel plate (6) between two second high-strength split screw rods arranged on the lower part of the fourth step and the existing column (1), enabling the outer-coated side steel plate (6) to abut against the existing column (1), then respectively welding two ends of the outer-coated side steel plate (6) on a closed steel plate (21) and an outer-coated steel plate (3) with stiffening ribs in an interrupted manner, and further connecting a clamping foundation, the pair of outer-coated side steel plates (6) and the outer-coated steel plate (3) with the stiffening ribs end to form a hollow column body;
step six: reinstalling the two second high-strength counter-pulling screw rods dismantled in the step 5;
step seven: welding side plate stiffening ribs (7); welding side plate stiffening ribs (7) on the outer end surfaces of the pair of outer-coated side steel plates (6); and ensure that the distance between the stiffening ribs (7) of the adjacent side plates is not more than one half of the distance between the outer wrapping steel plate (2) with the bracket and the outer wrapping steel plate (3) with the stiffening ribs;
step eight: welding the first side plate anti-slip ribs (12);
s 81: when the existing column (1) is a steel column, the first side plate anti-sliding ribs (12) are welded at the bottom of the outer-wrapping side steel plate (6) discontinuously, the length of a welding seam is calculated according to the side worst load by calculating the number of the first side plate anti-sliding ribs (12), and the number of the side plate anti-sliding ribs is determined;
s 82: when the existing column (1) is a concrete column, a first side plate anti-sliding rib (12) is arranged at the bottom and the top of the outer side steel plate (6) in a punching and reinforcing manner;
step nine: symmetrically and discontinuously welding steel beam baffles (8) on both sides of the upper end surface of a bracket upper top plate (13) with a bracket outer-coated steel plate (2), welding the steel beam baffles (8) on the outer end surface of a closed steel plate (21), and discontinuously welding baffle stiffening ribs (9) on the outer end surface of the steel beam baffles (8) and the upper end surface of the bracket upper top plate (13);
step ten: fully welding the intermittent welding in the fourth step, the fifth step, the eighth step and the ninth step, filling a crack pouring adhesive into a welding seam, and completely disassembling the second high-strength counter-pulling screw rod;
step eleven: mounting a support stub (25); placing a supporting short column (25) above a top plate (24) of an underground structure, presetting a socket at the intersection point of a vertical concrete supporting column (30) and a transverse concrete supporting column (31), and inserting a base of the supporting short column (25) into the socket; the height of the supporting short column (25) is determined according to the installation height of the hoop, and the error between the upper end face of the supporting short column (25) and the upper top plate (13) of the bracket is ensured to be within 2 cm;
step twelve: one end of a box-shaped steel beam (11) is hung in the steel beam socket reserved groove, and the other end of the box-shaped steel beam is installed above a short column top plate (26); an adjusting shim plate (23) is arranged between the upper end face of the upper bracket top plate (13) and the lower end face of the box-type steel beam (11), and the adjusting shim plate (23) is welded on the upper end face of the upper bracket top plate (13);
step thirteen: mounting a steel beam clamping unit; place limiting plate (10) at the top of box girder steel (11) to roof (13) on limiting plate (10) and bracket are vertically passed to first high-strength counter-pull screw rod, utilize stop nut to tie roof (13) on limiting plate (10) and the bracket fixed at last.
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| CN202110819675.9A CN113463773B (en) | 2021-07-20 | 2021-07-20 | Hoop, beam-column connecting structure comprising same and construction method thereof |
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| CN113463773B (en) | 2022-05-10 |
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