CN112942946A - Assembly type tenon-and-mortise bracket type beam-column joint connection method - Google Patents
Assembly type tenon-and-mortise bracket type beam-column joint connection method Download PDFInfo
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- CN112942946A CN112942946A CN202110167170.9A CN202110167170A CN112942946A CN 112942946 A CN112942946 A CN 112942946A CN 202110167170 A CN202110167170 A CN 202110167170A CN 112942946 A CN112942946 A CN 112942946A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- 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
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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
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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
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses an assembly type tenon-and-mortise bracket type beam column joint connection method, which comprises the following steps: (1) preparing prefabricated columns and hidden brackets; (2) manufacturing a precast beam; (3) assembling the beam column; (4) mounting vertical nodes; (5) and fixing the transverse nodes. According to the invention, the hidden corbels, the embedded L-shaped steel plates and the L-shaped steel bars with hooks extend into the prefabricated beam and provide the shear resistance, the shear strength of beam-column joints can be effectively increased, and the lap joints of the prefabricated beam and the hidden corbels are in mortise-tenon joint, so that the connection integrity can be increased, and the lateral stability of the prefabricated beam is improved; the beam column joint of the invention adopts a connection method combining the dry and wet connection of the hidden corbels, thereby ensuring the beauty and integrity of the building joint and avoiding the wet operation workload and the construction period consumption caused by large-scale concrete pouring on site.
Description
Technical Field
The invention relates to a method for connecting assembled tenon-and-mortise bracket type beam-column joints, and belongs to the technical field of assembled beam-column joint construction.
Background
The assembly type is an important development direction of a building production mode in the modern process of the current building industry, and is characterized in that building components such as beams, columns, floor slabs and the like are prefabricated in a factory and the prefabricated components are spliced on a construction site. The assembly type building production mode has higher efficiency and smaller environmental impact than the traditional cast-in-place concrete production mode. The beam column node connection mode of the existing fabricated concrete frame structure still has the following defects in the aspects of construction technology and construction quality:
(1) the assembly type beam-column wet connecting node is provided with a part needing to be cast in situ, certain cast-in-situ wet operation is needed in a construction site, the construction process is complex, and the consumption on the construction period is large.
(2) The assembled beam column dry connection node is connected in a bolt mode and the like, concrete pouring work is not needed during construction, and the problems that the beam column node integrity and the shock resistance are poor exist.
Disclosure of Invention
The invention aims to provide a method for connecting assembled tenon-and-mortise corbel type beam-column nodes aiming at the defects of the existing assembled beam-column nodes, and aims to solve the problems of large cast-in-place workload, complex procedures, insufficient node integrity, insufficient earthquake resistance and the like.
In order to achieve the above purpose, the invention provides the following technical scheme: an assembled tenon-and-mortise bracket type beam-column joint connection method comprises the following steps:
(1) the prefabricated column and the hidden bracket are made: integrally pouring a prefabricated column and a hidden bracket; a plurality of L-shaped hook extending steel bars are embedded above the hidden corbels in the prefabricated column, and hook parts of the L-shaped hook extending steel bars horizontally extend to the outer side of the prefabricated column; one surface of the hidden bracket, which is far away from the prefabricated column, is an inclined surface, and a right-angle triangular prism groove is formed in the inclined surface; embedding a bracket embedded L-shaped steel plate in a hidden bracket, wherein the plate end of the bracket embedded L-shaped steel plate horizontally extends out from the lower part of the inclined plane of the hidden bracket, and the plate end of the bracket embedded L-shaped steel plate is provided with bolt holes which vertically correspond to a hook part of an L-shaped steel bar with a hook; the hidden bracket is provided with a bolt hole which penetrates through the hidden bracket up and down and a bolt hole which penetrates through the right-angle triangular prism groove horizontally;
(2) manufacturing a precast beam: pouring a precast beam, wherein a notch matched with the shape of the hidden bracket is arranged below the end part of the precast beam, and a right-angle triangular prism convex block matched with the right-angle triangular prism groove is integrally poured on the connecting surface of the precast beam and the inclined surface of the hidden bracket; reserving a reserved reinforcing steel bar hole for the L-shaped strip hook to extend out of a reinforcing steel bar to extend into in the precast beam; a steel plate insertion groove matched with the bracket pre-buried L-shaped steel plate is preset in the precast beam; the prefabricated beam is respectively provided with a bolt hole corresponding to a bolt hole penetrating through the hidden bracket from top to bottom, a bolt hole corresponding to a bolt hole penetrating through the hidden bracket horizontally, and a bolt hole penetrating through the hidden bracket from top to bottom, wherein the bolt hole corresponds to a hook part of an L-shaped steel bar extending from a hook;
(3) assembling the beam column: inserting L-shaped bent hooks extending out of reinforcing steel bars into reserved reinforcing steel bar holes, inserting right-angle triangular prism convex blocks into right-angle triangular prism grooves, and inserting corbel pre-embedded L-shaped steel plates into steel plate insertion grooves to complete beam-column assembly;
(4) and (3) vertical node installation: anchoring the hidden bracket and the precast beam by using a high-strength bolt; anchoring the L-shaped steel bar with hooks and the precast beam by using high-strength bolts;
(5) fixing transverse nodes: and (4) anchoring the hidden bracket and the right-angle triangular prism bump by using a high-strength bolt.
Furthermore, vertical bars and stirrups are arranged in the prefabricated columns, and the L-shaped steel bars with hooks are welded with the stirrups.
Further, the upper surface and the lower surface of the precast beam are respectively provided with a rectangular groove which is vertically corresponding to a hook part of the L-shaped hook extending out of the steel bar, the hook part of the L-shaped hook extending out of the steel bar can extend into the rectangular groove on the upper surface of the precast beam, and the plate end of the bracket embedded L-shaped steel plate can extend into the rectangular groove on the lower surface of the precast beam.
Furthermore, rectangular notches are formed in the lower surface of the hidden bracket and the upper surface of the precast beam respectively along bolt holes which penetrate through the hidden bracket from top to bottom, rectangular bearing plates are arranged in the rectangular notches and the rectangular grooves respectively, and bolt holes through which high-strength bolts penetrate are formed in the rectangular bearing plates; the both sides of dark bracket are equipped with the triangle breach that corresponds with right angle triangular prism recess respectively, be equipped with triangle bearing plate in the triangle breach, set up the bolt hole that high-strength bolt passed on the triangle bearing plate.
Furthermore, the triangular pressure bearing plate and the hidden bracket are also provided with bracket grouting holes communicated with the right-angle triangular prism grooves in a penetrating mode.
Further, the connecting method further comprises the step (6) of hole grouting: and injecting high-strength non-shrinkage slurry into the reserved reinforcing steel bar holes and the bracket grouting holes.
Further, the connecting method also comprises the step (7) of gap filling: and (4) filling the rectangular groove, the rectangular notch and the triangular notch with mortar, and covering the high-strength bolt.
Further, the connecting method further comprises the following step (8) of gap filling: and filling the gap between the precast beam and the precast column with mortar to form a mortar filling layer.
Furthermore, a beam end L-shaped steel plate is preset at one end of the precast beam close to the precast column.
Furthermore, the upper surface of the hidden bracket is provided with a nitrile rubber gasket.
Compared with the prior art, the invention has the advantages that:
(1) the hidden corbels, the embedded L-shaped steel plates and the column reinforcing steel bars are anchored into the precast beam, and meanwhile, the shear resistance is provided, so that the shear strength of the beam-column joint can be effectively improved.
(2) The lap joint of the precast beam and the hidden bracket is in mortise and tenon joint, so that the connection integrity can be improved, and the lateral stability of the precast beam is improved.
(3) According to the invention, the nitrile rubber gasket is arranged between the concrete beam and the bracket, and the mortar filling layer is poured between the precast beam and the precast column, so that the shock resistance of the beam column node can be effectively improved.
(4) The beam column joint of the invention adopts a connection method combining the dry and wet connection of the hidden corbels, thereby ensuring the beauty and integrity of the building joint and avoiding the wet operation workload and the construction period consumption caused by large-scale concrete pouring on site.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 3 is a schematic view of a precast column of the present invention;
FIG. 4 is a schematic view of a dark corbel of the present invention;
FIG. 5 is a schematic view of a precast beam of the present invention;
FIG. 6 is a schematic view of a high strength bolt of the present invention;
FIG. 7 is a schematic view of a beam-end L-shaped steel plate of the present invention;
FIG. 8 is a schematic view of a bracket pre-embedded L-shaped steel plate according to the present invention;
in the figure: the prefabricated column comprises a prefabricated column 1, column vertical steel bars 11, stirrups 12, column L-shaped hooked extension steel bars 13, hidden brackets 2, concrete brackets 21, bracket vertical bolt holes 22, bracket transverse bolt holes 23, rectangular notches 24, right-angle triangular prism grooves 25, bracket grouting holes 26, triangular notches 27, prefabricated beams 3, concrete beams 31, right-angle triangular prism convex blocks 32, reserved steel bar holes 33, rectangular grooves 34, steel plate insertion grooves 35, beam vertical bolt holes 36, beam transverse bolt holes 37, high-strength bolts 4, nuts 41, circular gaskets 42, nuts 43, screws 44, beam-end L-shaped steel plates 5, vertical connecting plates 51, transverse connecting plates 52, beam-end steel plate bolt holes 53, bracket pre-embedded L-shaped steel plates 6, vertical anchoring plates 61, transverse connecting plates 62, bracket steel plate bolt holes 63, triangular bearing plates 7, rectangular bearing plates 8, nitrile rubber gaskets 9 and mortar filling layers 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further specifically described below by way of embodiments in combination with the accompanying drawings.
With reference to fig. 1-8, the method for connecting the assembled tenon-and-mortise corbel type beam-column joints comprises a prefabricated column 1 for connecting the beam-column joints, a hidden corbel 2, a prefabricated beam 3, a high-strength bolt 4, a beam-end L-shaped steel plate 5, a corbel embedded L-shaped steel plate 6, a triangular bearing plate 7, a rectangular bearing plate 8, a nitrile rubber gasket 9 and a mortar filling layer 10. Be equipped with vertical muscle 11, stirrup 12 and L type area crotch in prefabricated post 1 and stretch out reinforcing bar 13, L type area crotch stretches out reinforcing bar 13 and stirrup 12 welding, and is pre-buried in prefabricated post 1, and L type area crotch stretches out the outer tip of reinforcing bar 13 and is equipped with hook portion. The prefabricated column 1 and the hidden bracket 2 are integrally cast. The nitrile rubber gasket 9 is arranged on the upper surface of the dark bracket 2. Before connection, the rectangular bearing plates 8 are firstly installed at the rectangular grooves 34 of the precast girders 3, the rectangular notches 24 of the precast girders and the hidden brackets. L-shaped protruding reinforcing steel bars with hooks 13 in the precast columns 1 are inserted into reserved reinforcing steel bar holes 33 in the upper portions of the precast beams 3, concrete right-angle triangular prism protruding blocks 32 of the precast beams 3 are spliced with right-angle triangular prism grooves 25 in inclined plane rabbets of the hidden brackets 2, and the bracket pre-embedded L-shaped steel plates 6 in the lower portions of the hidden brackets 2 are inserted into steel plate insertion grooves 35 reserved in the lower portions of the precast beams 3. The anchoring is divided into three parts: the first is the anchorage between the concrete hidden bracket 2 and the precast beam 3. And the high-strength bolt 4 is used for connecting the precast beam 3, the beam end L-shaped steel plate 5, the nitrile rubber gasket 9, the hidden bracket 2 and the two rectangular bearing plates 8 in an anchoring manner. And finally, filling the gap between the precast beam 3 and the precast column 1 with mortar to form a mortar filling layer 10. And secondly, anchoring the concrete right-angle triangular prism convex block 32 of the precast beam 3 and the right-angle triangular prism groove 25 of the hidden bracket 2. Firstly, the triangular bearing plate 7 is installed at the triangular notch 27 on the side surface of the hidden bracket 2, the precast beam 3 and the hidden bracket 2 are anchored by using the high-strength bolt 4, and the grouting is performed on the side surface of the hidden bracket 2 and the grouting hole 26 on the triangular bearing plate 7 to the right-angled triangular prism groove 25 in the hidden bracket 2, so that gaps and holes are fully filled. And thirdly, anchoring the bracket pre-embedded L-shaped steel plate 6 with the precast beam 3 and the precast column L-shaped hook part with the hook extending out of the steel bar 13. After the bracket embedded L-shaped steel plate 6 is inserted into the precast beam inner steel plate insertion groove 35, the hook part of the precast column L-shaped belt hook extending out of the steel bar 13, the rectangular bearing plate 8, the precast beam 3 and the bracket embedded L-shaped steel plate 6 are anchored by using the high-strength bolt 4, and grouting is performed in the steel plate insertion groove 35 of the precast beam 3 to fully fill gaps. And finally, filling the rectangular groove 34, the rectangular gap 24 and the triangular gap 27 with mortar, and covering the bolts, so as to ensure the attractiveness of the beam-column joint.
The prefabricated column 1 comprises vertical ribs 11, stirrups 12 and L-shaped protruding reinforcing steel bars 13 with hooks.
The stirrup 12 is used for fixing the vertical rib 11 and the L-shaped strip hook extending steel bar 13, and the L-shaped strip hook extending steel bar 13 is welded with the stirrup 12.
The L-shaped vertical part with the hook extending out of the steel bar 13 is anchored into the prefabricated column 1, the anchoring length is 15 times of the diameter of the steel bar, and the length of the L-shaped vertical part extending out of the prefabricated column 1 is 1/3 the length of the prefabricated beam. The hook portion of the L-shaped protruding reinforcement 13 with the hook is horizontally bent, and the high-strength bolt 4 can pass through the hook portion, thereby providing anchoring tension.
The hidden bracket 2 comprises a concrete bracket 21, a bracket vertical bolt hole 22, a bracket transverse bolt hole 23, a rectangular notch 24, a right-angle triangular prism groove 25, a bracket grouting hole 26, a triangular notch 27 and a bracket pre-embedded L-shaped steel plate 6.
The concrete bracket 21 is a concrete-poured bracket, the section of the concrete bracket is a right trapezoid, and a straight quadrangular prism with a straight triangular prism groove 25 is arranged at the groove and tongue of the inclined plane.
The bracket vertical bolt holes 22 are vertical through holes in the concrete bracket 21, and the number of the vertical through holes is 4.
The bracket transverse bolt holes 23 are transverse through holes in the concrete bracket 21, and the number of the bracket transverse bolt holes is 3.
The rectangular notch 24 is a concave part on the lower surface of the concrete bracket 21 and is used for installing the rectangular bearing plate 8 and the high-strength bolt 4.
The right-angle triangular prism groove 25 is a straight triangular prism groove at an inclined rabbet of the concrete bracket 21, the height of the groove is 1/2, and the width of the groove is 1/3.
The bracket grouting holes 26 are circular through holes in the side face of the hidden bracket 2 and are used for pouring high-strength non-shrinkage slurry, gaps between the bracket right-angle triangular prism grooves 25 and the precast beam concrete right-angle triangular prism protruding blocks 32 are fully filled, and the number of the gaps is 2.
The triangular side length of the triangular notch 27 is matched with the right-angled triangular prism groove 25, and the triangular notch is used for mounting the triangular bearing plate 7 and the high-strength bolt 4.
The precast beam 3 comprises a concrete beam 31, a concrete right-angle triangular prism convex block 32, a reserved reinforcing steel bar hole 33, a rectangular groove 34, a steel plate insertion groove 35, a beam vertical bolt hole 36, a beam transverse bolt hole 37 and a beam end L-shaped steel plate 5.
The concrete beam 31 is a rectangular beam poured by concrete, one end of the beam is provided with a notch, and the notch is a straight quadrangular prism with a right trapezoid section.
The concrete right-angle triangular prism protruding block 32 and the concrete beam 31 are integrally poured, are located at the inclined plane of the concrete beam straight quadrangular prism gap, and correspond to the hidden bracket right-angle triangular prism groove 25 in position and size.
The reserved steel bar hole 33 is a reserved circular hole on the upper portion of the precast beam 3 and is used for inserting the L-shaped hooked extension steel bar 13 of the precast column 1, the position of the L-shaped hooked extension steel bar 13 corresponds to that of the column L-shaped hooked extension steel bar 13, the length of the L-shaped hooked extension steel bar is 1/3, and the L-shaped hooked extension steel bar is communicated with the rectangular groove 34 on the upper surface of the precast beam, so that the hook portion of the L-shaped hooked extension steel bar 13 can extend into the rectangular groove 34 on the upper surface of the precast.
The steel plate insertion groove 35 is a rectangular groove in the lower portion of the precast beam 3, the position and the size of the steel plate insertion groove correspond to those of the bracket L-shaped steel plate 6, and the steel plate insertion groove 35 is communicated with the rectangular groove 34 in the lower surface of the precast beam.
The beam vertical bolt holes 36 are through holes in the concrete beam 31, the positions of the vertical bolt holes at the lap joint of the beam end and the hidden bracket correspond to the bracket vertical bolt holes 22 of the hidden bracket 2, and the number of the vertical bolt holes is 4; the vertical bolt holes in the middle of the beam are located at the rectangular grooves 34, and the number of the bolt holes is 3.
The beam transverse bolt holes 37 are transverse through holes in the concrete right-angle triangular prism convex blocks 32, the positions of the transverse bolt holes correspond to the transverse bolt holes 23 of the hidden bracket 2, and the number of the transverse bolt holes is 3.
The high-strength bolt 4 comprises a nut 41, a circular gasket 42, a nut 43 and a screw 44.
The nut 41 is a fixed end of the high-strength bolt 4 when being anchored.
The circular gaskets 42 are made of steel, reduce the pressure between the nut 31 and the rectangular bearing plate, and the number of the circular gaskets is 10.
The nut 43 is a regular hexagon and is used for anchoring the high-strength bolt 4.
The screw 44 is a threaded cylinder.
The beam-end L-shaped steel plate 5 is preset at the end part of the precast beam 2 and comprises a vertical connecting plate 51, a transverse connecting plate 52 and a beam-end steel plate bolt hole 53.
The vertical connecting plate 51 is a rectangular steel plate, the length of the vertical connecting plate is 1/3 beam height, and the width of the vertical connecting plate is beam width.
The transverse connecting plate 52 is a rectangular steel plate, and the length of the transverse connecting plate is 1/2 that of the dark bracket 2.
The beam-end steel plate bolt holes 53 are round holes reserved in the surface of the transverse connecting plate 52, the positions of the holes correspond to the bracket vertical bolt holes 23, and the number of the holes is 2.
The pre-buried L shaped steel plate 6 of bracket includes vertical anchor plate 61, transverse connection board 62 and steel sheet bolt hole 63.
The transverse connecting plate 62 is a rectangular steel plate with the width being 2/3 of the width of the precast beam 3.
The steel plate bolt holes 63 are round holes reserved in the surface of the transverse connecting plate 62, the positions of the steel plate bolt holes correspond to the beam vertical bolt holes 36, and the number of the steel plate bolt holes is 3.
The triangle bearing plate 7 is a bearing plate, the size of the triangle bearing plate corresponds to the triangle gap 27, the number of the triangle bearing plate is 2, the triangle bearing plate is arranged at the triangle gaps 27 at two sides of the concrete bracket 21, and the outer layer of the concrete is protected from being damaged. The triangular bearing plate 7 is provided with holes corresponding to the bracket grouting holes 26.
The rectangular bearing plate 8 is a bearing plate, the size of the rectangular bearing plate corresponds to that of the beam rectangular groove 34 and the bracket rectangular groove 24, the number of the rectangular bearing plate is 6, and the rectangular bearing plate is respectively arranged at the rectangular groove 34 and the rectangular notch 24.
The nitrile rubber gasket 9 is a rectangular gasket, has the same width as the prefabricated beam 3, has the same length as the length of the upper surface of the hidden bracket 2, is arranged on the upper surface of the hidden bracket 2, and increases the energy dissipation and shock absorption capacity between the prefabricated beam 3 and the hidden bracket 2.
The mortar filling layer 10 is located between the precast column 1 and the concrete beam 31, and is filled with mortar and a flexible substance.
The invention discloses a method for connecting joints of assembled hidden corbel type beams and columns, which comprises the following steps:
(1) the prefabricated column and the hidden bracket are made:
(1-1) arranging reinforcing steel bars: vertical stress bar 11 and L-shaped hook in the column are arranged in the prefabricated column 1 to stretch out the steel bar 13, the vertical bar 11 is fixed by using the stirrup 12, and the L-shaped hook stretches out the steel bar 13 and is welded with the stirrup 12.
(1-2) pre-embedding a steel plate: and welding the bracket pre-embedded L-shaped steel plate 6 with the bracket structural ribs.
(1-3) concrete pouring: concrete pouring is carried out on the prefabricated column 1 and the hidden bracket 2, the L-shaped steel plate 6 is embedded in the hidden bracket 2, integral prefabrication of the prefabricated column 1 and the hidden bracket 2 is completed, and meanwhile, the rectangular notch 24, the right-angle triangular prism groove 25, the triangular notch 27, the bracket vertical bolt hole 22, the transverse bolt hole 23 and the grouting hole 26 are arranged on the hidden bracket 2.
(2) Manufacturing a precast beam: the precast beam 3 is made of concrete, the L-shaped steel plate 5 is pre-buried at the beam end, and meanwhile, the concrete beam is provided with a rectangular notch 24, a rectangular groove 34, a reserved reinforcing steel bar hole 33, a vertical bolt hole 36, a transverse bolt hole 37 and a concrete right-angle triangular prism lug 32.
(3) Assembling the beam column:
(3-1) gasket installation: and a nitrile rubber gasket 9 is arranged at the contact position of the upper surface of the hidden bracket 2 and the precast beam 3.
(3-2) installing a pressure bearing plate: the rectangular bearing plate 8 is respectively arranged at the rectangular groove 34 and the rectangular notch 24; the triangular bearing plate 7 is arranged at the triangular notch 27 on the side surface of the hidden bracket 2.
(3-3) hoisting the precast beam: hoisting the precast beam 3, and aligning the reserved steel bar hole 33 of the precast beam 3 with the precast column to transversely extend out of the steel bar 13; the precast beam concrete right-angle triangular prism convex block 32 is aligned to the hidden bracket right-angle triangular prism groove 25; the precast beam steel plate insertion groove 35 is aligned with the hidden corbel L-shaped embedded steel plate 6.
(3-4) beam column splicing: moving the precast beam 3 to enable the precast column to extend out of the steel bars 13 and insert into the precast beam reserved steel bar holes 33; splicing the precast beam concrete right-angle triangular prism convex block 32 and the hidden bracket right-angle triangular prism groove 25; the hidden corbel L-shaped embedded steel plate 6 is inserted into the steel plate insertion groove 35 of the precast beam.
(4) Vertical node installation
(4-1) bolt installation: the screw 44 of the rotating high-strength bolt 4 is inserted from the upper part of the rectangular bearing plate 8 and passes through the beam vertical bolt hole 36, the steel plate bolt hole 53, the nitrile rubber gasket 9, the bracket vertical bolt hole 22 and the other rectangular bearing plate 8 on the lower surface of the hidden bracket 2.
(4-2) bolt anchoring: the nut 41 of the high-strength bolt 4 is fixed and the nut 43 is rotated until the nut cannot be screwed.
(5) Fixing transverse nodes:
(5-1) bolt installation: the rotary high-strength bolt 4 is inserted from the front of the triangular bearing plate 7 and passes through the bracket transverse bolt hole 23, the beam transverse bolt hole 37 and the triangular bearing plate 7 on the other side of the hidden bracket.
(5-2) bolt anchoring: the nut 41 of the high-strength bolt 4 is fixed and the nut 43 is rotated until the nut cannot be screwed.
(6) Grouting holes:
(6-1) injecting high-strength non-shrinkage grout from the reserved steel bar holes 33 on the upper part of the precast beam 3, filling gaps between the steel bars and the steel bar holes 33, and stopping grouting when the grout overflows from the steel bar holes 33.
(6-2) injecting high-strength shrinkage-free grout from the grouting holes 26 on the side surfaces of the hidden brackets, enabling the grout to penetrate into gaps between the precast beam concrete right-angle triangular prism convex blocks 32 and the hidden bracket right-angle triangular prism grooves 25 from the grouting holes 26, filling the gaps, and stopping grouting when the grout overflows from the grouting holes 26.
(6-3) injecting high-strength non-shrinkage grout from the steel plate insertion groove 35 at the lower part of the precast beam 3, filling the gap between the steel plate 6 and the insertion groove 35, and stopping grouting when the grout bursts out from the insertion groove 35.
(7) Filling gaps with a plain: and (3) filling the rectangular groove 34, the rectangular notch 24 and the triangular notches 27 on the two sides of the bracket with mortar, and covering the bolt.
(8) Gap filling: and filling the gap between the precast beam 3 and the precast column 1 with mortar to complete the mortar filling layer.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The method for connecting the nodes of the assembled tenon-and-mortise bracket type beam column is characterized by comprising the following steps of:
(1) the prefabricated column and the hidden bracket are made: integrally pouring a prefabricated column and a hidden bracket; a plurality of L-shaped hook extending steel bars are embedded above the hidden corbels in the prefabricated column, and hook parts of the L-shaped hook extending steel bars horizontally extend to the outer side of the prefabricated column; one surface of the hidden bracket, which is far away from the prefabricated column, is an inclined surface, and a right-angle triangular prism groove is formed in the inclined surface; embedding a bracket embedded L-shaped steel plate in a hidden bracket, wherein the plate end of the bracket embedded L-shaped steel plate horizontally extends out from the lower part of the inclined plane of the hidden bracket, and the plate end of the bracket embedded L-shaped steel plate is provided with bolt holes which vertically correspond to a hook part of an L-shaped steel bar with a hook; the hidden bracket is provided with a bolt hole which penetrates through the hidden bracket up and down and a bolt hole which penetrates through the right-angle triangular prism groove horizontally;
(2) manufacturing a precast beam: pouring a precast beam, wherein a notch matched with the shape of the hidden bracket is arranged below the end part of the precast beam, and a right-angle triangular prism convex block matched with the right-angle triangular prism groove is integrally poured on the connecting surface of the precast beam and the inclined surface of the hidden bracket; reserving a reserved reinforcing steel bar hole for the L-shaped strip hook to extend out of a reinforcing steel bar to extend into in the precast beam; a steel plate insertion groove matched with the bracket pre-buried L-shaped steel plate is preset in the precast beam; the prefabricated beam is respectively provided with a bolt hole corresponding to a bolt hole penetrating through the hidden bracket from top to bottom, a bolt hole corresponding to a bolt hole penetrating through the hidden bracket horizontally, and a bolt hole penetrating through the hidden bracket from top to bottom, wherein the bolt hole corresponds to a hook part of an L-shaped steel bar extending from a hook;
(3) assembling the beam column: inserting L-shaped bent hooks extending out of reinforcing steel bars into reserved reinforcing steel bar holes, inserting right-angle triangular prism convex blocks into right-angle triangular prism grooves, and inserting corbel pre-embedded L-shaped steel plates into steel plate insertion grooves to complete beam-column assembly;
(4) and (3) vertical node installation: anchoring the hidden bracket and the precast beam by using a high-strength bolt; anchoring the L-shaped steel bar with hooks and the precast beam by using high-strength bolts;
(5) fixing transverse nodes: and (4) anchoring the hidden bracket and the right-angle triangular prism bump by using a high-strength bolt.
2. The method for connecting the assembled tenon-and-mortise bracket-shaped beam column joints according to claim 1, wherein vertical ribs and stirrups are arranged in the prefabricated columns, and the L-shaped hooked extending steel bars are welded with the stirrups.
3. The method for connecting the nodes of the assembled tenon-and-mortise bracket-shaped beam column according to claim 1, wherein rectangular grooves vertically corresponding to hook parts of the L-shaped steel bars extending from the hooks are formed in the upper surface and the lower surface of the precast beam respectively, the hook parts of the L-shaped steel bars extending from the hooks can extend into the rectangular grooves in the upper surface of the precast beam, and plate ends of the pre-embedded L-shaped steel plates of the brackets can extend into the rectangular grooves in the lower surface of the precast beam.
4. The method for connecting the assembled tenon-and-mortise corbel type beam-column joints according to claim 3, wherein the lower surface of the hidden corbel and the upper surface of the precast beam are respectively provided with a rectangular notch along a bolt hole penetrating through the hidden corbel from top to bottom, a rectangular bearing plate is respectively arranged in the rectangular notch and the rectangular groove, and a bolt hole through which a high-strength bolt penetrates is formed in the rectangular bearing plate; the both sides of dark bracket are equipped with the triangle breach that corresponds with right angle triangular prism recess respectively, be equipped with triangle bearing plate in the triangle breach, set up the bolt hole that high-strength bolt passed on the triangle bearing plate.
5. The method for connecting the assembled mortise-tenon bracket type beam-column joints according to claim 4, wherein bracket grouting holes communicated with grooves of the right-angled triangular prism are formed in the triangular bearing plate and the hidden bracket in a penetrating manner.
6. The method for connecting the assembled mortise-tenon bracket type beam-column joints according to claim 5, further comprising the following steps (6) of hole grouting: and injecting high-strength non-shrinkage slurry into the reserved reinforcing steel bar holes and the bracket grouting holes.
7. The method for connecting the assembled mortise-tenon bracket type beam-column joints according to claim 6, further comprising the step (7) of gap filling: and (4) filling the rectangular groove, the rectangular notch and the triangular notch with mortar, and covering the high-strength bolt.
8. The method for connecting the nodes of the assembled tenon-and-mortise corbel type beam-column according to claim 7, further comprising the step (8) of gap filling: and filling the gap between the precast beam and the precast column with mortar to form a mortar filling layer.
9. The method for connecting the nodes of the assembled tenon-and-mortise corbel type beam-column according to claim 1, wherein a beam-end L-shaped steel plate is preset at one end of the precast beam close to the precast column.
10. The method for connecting the assembled tenon-and-mortise corbel type beam-column joints according to claim 1, wherein the upper surface of the hidden corbel is provided with a nitrile rubber gasket.
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| CN114352052A (en) * | 2021-12-15 | 2022-04-15 | 江苏海洋大学 | Method for reinforcing concrete frame node |
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