CN114960935B - PC frame beam-column connection node with function recovery after earthquake - Google Patents
PC frame beam-column connection node with function recovery after earthquake Download PDFInfo
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- CN114960935B CN114960935B CN202210038321.5A CN202210038321A CN114960935B CN 114960935 B CN114960935 B CN 114960935B CN 202210038321 A CN202210038321 A CN 202210038321A CN 114960935 B CN114960935 B CN 114960935B
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- wedge
- column
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- precast
- pieces
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—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
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
-
- 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
- E04H9/025—Structures with concrete columns
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to the field of building connecting pieces, in particular to a PC frame beam-column connecting node with a function recoverable after earthquake, which comprises a precast column, wherein connecting pieces are symmetrically connected to two sides of the precast column, the upper part and the lower part of the surface of the connecting piece far away from the precast column are inclined inwards to form a trapezoid concave surface, and the trapezoid concave surface of the connecting piece is connected with a precast beam in a fitting way.
Description
Technical Field
The invention relates to the field of assembly building connectors, in particular to a PC frame beam-column connection node with a function recoverable after earthquake.
Background
The prefabricated building is taken as an industrialized building production mode, the concepts of saving resources and protecting environment are reflected, the prefabricated building is promoted to the national strategic level, the prefabricated building is a novel construction mode actively popularized by the country, the skeleton of the prefabricated building is formed by connecting prefabricated beam bodies, the prefabricated beam and column members are connected into a whole by connecting nodes, the functions of load transmission and shock resistance and energy consumption are achieved, and the prefabricated building has the important position in an assembled frame structure.
At present, in practical engineering application, node connection is still a weak link of an assembled concrete frame structure, the performance of the node connection directly influences the integrity of the frame structure and the earthquake safety, the node stress of the traditional assembled integral concrete frame structure is complex, the connection process is complex, and the damage or the destruction of the connection node caused by strong earthquake is inconvenient to replace and repair.
Disclosure of Invention
The invention aims to solve the following problems in the prior art: the traditional assembled integral concrete frame structure node is relatively complex in stress, the connecting process is also relatively complex, and the damage or the damage of the connecting node caused by strong shock is inconvenient to replace and repair.
In order to solve the problems in the prior art, the invention provides a PC frame beam-column connecting node with recoverable post-earthquake functions, which comprises a precast column, wherein connecting pieces are symmetrically connected to two sides of the precast column, the upper part and the lower part of the surface of the connecting piece, which is far away from the precast column, are inclined inwards to form a trapezoid concave surface, the trapezoid concave surface of the connecting piece is connected with a precast beam in a fitting way, the precast beam and the precast column are connected into a whole through the connecting piece, the contact surface of the precast beam and the connecting piece is trapezoid, the contact surface has good integrity and cooperation, the shearing strength in the vertical direction is increased, the earthquake resistant effect of a connecting part is improved, and the post-earthquake repairing is convenient.
Preferably, the connecting piece includes two wedges, and the wedge distributes from top to bottom, and the butt joint hole has been seted up to the corresponding face of wedge, is connected with docking bolt in the butt joint hole, and the faying face of wedge and precast column is the plane, and the wedge is the face of buckling near one side of precast column, two the trapezoidal sunk surface of isosceles trapezoid is constituteed to the face of buckling of wedge, and the wedge of lower part is fixed with precast column earlier during on-the-spot installation, is connected with lower part wedge to its precast beam again, then the wedge of assembly upper portion, convenient on-the-spot construction installation.
Preferably, a plurality of groups of opposite pulling holes are formed in one side, close to the prefabricated column, of the wedge-shaped piece, prefabricated through holes aligned with the opposite pulling holes are formed in the surface of the prefabricated column, opposite pulling bolts are inserted into the prefabricated through holes, the opposite pulling bolts are connected with the opposite pulling holes aligned with the opposite pulling holes, the wedge-shaped pieces on two sides are fixedly mounted through the opposite pulling bolts, the wedge-shaped pieces are mounted conveniently, the field mounting speed is improved, and the connection strength of the wedge-shaped pieces and the prefabricated column is high.
Preferably, the one end laminating that precast beam is close to the connecting piece is fixed with the connecting plate, and the trapezoidal sunk surface adaptation of connecting plate and connecting piece, the outer perforation of multiunit has been seted up to the surface correspondence of connecting plate and connecting piece, and the outer perforation of counterpoint is through wearing bolted connection outward, carries out prefabricated cladding to the tip of precast beam through the connecting plate, makes precast beam and connecting piece's connection terminal surface integrality better, makes things convenient for the counterpoint of scene high accuracy to be connected.
Preferably, the clearance groove is formed in the edge of the joint surface of the precast beam and the connecting plate, the clearance groove and the outer through hole are arranged in an aligned mode, the length of the outer through hole is larger than that of the outer through bolt, and the clearance groove is formed to facilitate the outer through bolt to penetrate into the outer through hole from the position of the connecting plate to be fixed to the inner side of the wedge.
Preferably, the surface of the prefabricated column is provided with a matching groove matched with the plane of the connecting piece, the opposite pulling hole is formed in the matching groove, the matching groove is formed for positioning the wedge-shaped piece, so that the position of the wedge-shaped piece is accurate, and the supporting force of the wedge-shaped piece along the side surface of the prefabricated column is improved.
Preferably, the middle part of the wedge-shaped piece is in a through shape, and a shear web is fixed at the center line position of the through part of the wedge-shaped piece, so that the stress intensity of the wedge-shaped piece is increased.
Preferably, the two groups of wedge-shaped pieces are equally spaced with strip-shaped grooves, so that the strength and rigidity of the wedge-shaped pieces are properly weakened, the wedge-shaped pieces have good unloading deformation effect, and the connection safety is improved.
Preferably, spring washers are arranged between the nuts of the externally-threaded bolts and the wedge-shaped pieces and between the nuts of the split bolts and the wedge-shaped pieces, so that the connection of the externally-threaded bolts and the split bolts is stable.
Compared with the related art, the post-earthquake function recoverable PC frame beam-column connection node has the following beneficial effects:
1. according to the invention, two groups of wedge-shaped pieces are spliced to form the connecting piece with the isosceles trapezoid outer end surface, and the connecting plate with the integrally-connected end part of the precast beam and the connecting piece are spliced, so that the joint positions form concave coordination, the shearing strength in the vertical direction is greatly improved, the integrity and the collaboration are higher, the anti-seismic effect of the connecting part is improved, and the post-earthquake repair is convenient and quick;
2. the invention adopts the split bolts to penetrate through the connecting pieces on the two sides of the prefabricated column connection, and then fixes the prefabricated beams into a whole, and the high-strength connection mode uses fewer structural parts, has simple installation steps and ensures that the construction operation is very convenient.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a mating groove structure of the present invention;
FIG. 3 is a schematic view of a split bolt connection structure according to the present invention;
FIG. 4 is a schematic view of a connector according to the present invention;
fig. 5 is a schematic structural view of the connecting plate according to the present invention.
Reference numerals in the drawings: 1. prefabricating a column; 2. prefabricating a beam; 3. a connecting piece; 31. a wedge; 32. a butt joint hole; 33. a butt-joint bolt; 34. a bar-shaped groove; 35. a shear web; 36. a counter pulling hole; 4. prefabricating perforation; 5. a mating groove; 6. a split bolt; 7. a connecting plate; 8. a relief groove; 9. an outer perforation; 10. and (5) externally penetrating the bolts.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Example 1
As shown in FIG. 1, a function recoverable PC frame roof beam-post connected node after shake, including selecting C60-C80 high strength concrete to pour fashioned precast column 1, precast column 1 both sides symmetry is connected with connecting piece 3, connecting piece 3 keeps away from precast column 1's face upper portion and lower part and is the trapezoidal sunken face of inwards slope constitution, connecting piece 3's trapezoidal sunken face laminating is connected with and selects C40 concrete to pour precast beam 2 that becomes, precast column 1 and precast beam 2's inside all is provided with indulges muscle and stirrup, indulges muscle and stirrup all adopt HRB400 level four bar, precast column 1 and precast beam 2 all prefabricate at the mill, transport to the scene and directly assemble, be connected precast beam 2 and precast column 1 as an organic whole through connecting piece 3, precast beam 2 and connecting piece 3's contact surface is the trapezoidal form, good wholeness and collaborative nature have increased the shear strength at vertical orientation, the shock resistance effect of connecting position has been promoted, and after shake is restoreed conveniently.
As shown in fig. 4, the connecting piece 3 includes two wedge pieces 31, the wedge pieces 31 are distributed up and down, the corresponding surfaces of the wedge pieces 31 are provided with butt joint holes 32, the butt joint holes 32 are internally connected with butt joint bolts 33, the joint surfaces of the wedge pieces 31 and the prefabricated column 1 are planes, one side of the wedge pieces 31 close to the prefabricated column 1 is a bending surface, the bending surfaces of the two wedge pieces 31 form isosceles trapezoid concave surfaces, during field installation, the lower wedge pieces 31 and the prefabricated column 1 are fixed at first, then the prefabricated beam 2 is connected with the lower wedge pieces 31, and then the upper wedge pieces 31 are assembled, so that the field construction installation is facilitated.
As shown in fig. 4, the middle part of the wedge 31 is in a through shape, and a shear web 35 is fixed at the center line of the through part of the wedge 31, so that the stress intensity of the wedge 31 is increased; the two groups of wedge-shaped pieces 31 are provided with strip-shaped grooves 34 at equal intervals on the far-away surfaces, so that the strength and the rigidity of the wedge-shaped pieces are properly weakened, the wedge-shaped pieces have good unloading deformation effect, and the connection safety is improved.
Spring washers are arranged between the nuts of the externally threaded bolts 10 and the wedge-shaped pieces 31 and between the nuts of the split bolts 6 and the wedge-shaped pieces 31, so that the externally threaded bolts 10 and the split bolts 6 are connected stably.
Example two
As shown in fig. 2-4, a plurality of groups of opposite pulling holes 36 are formed on one side of the wedge 31, which is close to the prefabricated column 1, a prefabricated through hole 4 which is aligned with the opposite pulling holes 36 is formed on the surface of the prefabricated column 1, the opposite pulling bolt 6 is inserted into the prefabricated through hole 4, the opposite pulling bolt 6 is connected with the opposite pulling holes 36, and the wedge 31 on two sides is fixedly mounted by the opposite pulling bolt 6 penetrating through the prefabricated through hole 4 and the opposite pulling holes 36, so that the wedge 31 is convenient to mount and operate, the field mounting speed is improved, and the connection strength of the wedge 31 and the prefabricated column 1 is high.
As shown in fig. 2, the surface of the prefabricated column 1 is provided with a matching groove 5 adapted to the plane of the connecting piece 3, a counter-pulling hole 36 is formed in the matching groove 5, the matching groove 5 is formed to position the wedge 31, so that the position is accurate, and in addition, the holding force of the wedge 31 along the side surface square of the prefabricated column 1 is improved.
Construction principle: the lower wedge 31 is attached in the matching groove 5, the opposite pulling hole 36 on the surface of the wedge is accurately aligned with the prefabrication through hole 4, the opposite pulling bolt 6 passes through the opposite pulling hole 36 and the prefabrication through hole 4 to fasten the lower wedge 31 on the surface of the prefabrication column 1, then the end face of the prefabrication beam 2 is connected with the lower wedge 31, and the upper wedge 31 is spliced and installed, so that the two groups of prefabrication beams 2 form opposite pulling stress.
Example III
As shown in fig. 4-5, a connecting plate 7 is fixedly attached to one end of the precast beam 2, which is close to the connecting piece 3, the connecting plate 7 is connected with stressed reinforcing steel bars in the precast beam 2 through plug welding, the connecting plate 7 is connected with trapezoid surface part concrete of the precast beam 2 through anchor bolts in an anchoring manner, the connecting plate 7 is formed by splicing and welding three square steel plates, the connecting plate 7 is matched with trapezoid concave surfaces of the connecting piece 3, a plurality of groups of outer through holes 9 are correspondingly formed in the surface of the connecting plate 7 and the surface of the connecting piece 3, the aligned outer through holes 9 are connected through outer through bolts 10, and precast wrapping is carried out on the end part of the precast beam 2 through the connecting plate 7, so that the integrity of the connecting end faces of the precast beam 2 and the connecting piece 3 is good, and the on-site high-precision alignment connection is facilitated.
As shown in fig. 4-5, the edge of the joint surface of the precast beam 2 and the connecting plate 7 is provided with a yielding groove 8, the yielding groove 8 is aligned with the outer through hole 9, the length of the outer through hole 9 is greater than that of the outer through bolt 10, and the yielding groove 8 is provided with a yielding groove 8 which is convenient for the outer through bolt 10 to penetrate into the outer through hole 9 from the position of the connecting plate 7 to the inner side of the wedge 31 for fixing.
Construction principle: the connecting plate 7 is formed by splicing and welding three square steel plates, the structure is matched with the end face of the precast beam 2, when the precast beam 2 is precast, the connecting plate 7 is connected with stressed steel bars in the precast beam 2 through plug welding, after the precast beam 2 is finished, the connecting plate 7 is connected with trapezoid surface part concrete of the precast beam 2 through anchor bolts in an anchoring manner, the precast beam 2 and the connecting plate 7 are directly integrally carried to a construction site, the connecting plate 7 is attached to the connecting piece 3 in an aligned manner, and the outer penetrating bolts 10 are used for penetrating through outer penetrating holes 9 for fixed installation.
Claims (6)
1. The PC frame beam-column connecting node capable of recovering functions after earthquake comprises a precast column (1), and is characterized in that connecting pieces (3) are symmetrically connected to two sides of the precast column (1), the upper part and the lower part of the surface, far away from the precast column (1), of the connecting pieces (3) are inclined inwards to form a trapezoid concave surface, and the trapezoid concave surface of the connecting pieces (3) is attached to and connected with a precast beam (2);
the connecting piece (3) comprises two wedge pieces (31), the wedge pieces (31) are distributed up and down, butt joint holes (32) are formed in the corresponding surfaces of the wedge pieces (31), butt joint bolts (33) are connected in the butt joint holes (32), the joint surfaces of the wedge pieces (31) and the prefabricated columns (1) are planes, one side, close to the prefabricated columns (1), of each wedge piece (31) is a bending surface, and the bending surfaces of the two wedge pieces (31) form isosceles trapezoid concave surfaces;
a plurality of groups of opposite pulling holes (36) are formed in one side, close to the prefabricated column (1), of the wedge-shaped piece (31), prefabricated through holes (4) aligned with the opposite pulling holes (36) are formed in the surface of the prefabricated column (1), opposite pulling bolts (6) are inserted into the prefabricated through holes (4), and the opposite pulling bolts (6) are connected with the aligned opposite pulling holes (36);
the one end laminating that precast beam (2) is close to connecting piece (3) is fixed with connecting plate (7), and trapezoidal sunk surface adaptation of connecting piece (3) is connected through outer perforation (10) of perforating (9) of multiunit to the surface correspondence of connecting plate (7) and connecting piece (3).
2. The post-earthquake function-restorable PC frame beam-column connection node according to claim 1, wherein a relief groove (8) is provided at the edge of the joint surface of the precast beam (2) and the connecting plate (7), the relief groove (8) is aligned with the outer through hole (9), and the length of the outer through hole (9) is greater than the length of the outer through bolt (10).
3. The post-earthquake function-recoverable PC frame beam-column connection node according to claim 1, wherein the surface of the prefabricated column (1) is provided with a mating groove (5) adapted to the plane of the connecting piece (3), and the counter-pulling hole (36) is provided in the mating groove (5).
4. The post-earthquake function-restorable PC frame beam-column connection node according to claim 1, wherein the middle part of the wedge (31) is in a through shape, and a shear web (35) is fixed at the center line position of the through part of the wedge (31).
5. Post-earthquake function-restorable PC frame beam-column connection node according to claim 4, characterized in that the distant faces of the two sets of wedges (31) are equally spaced with a bar-shaped groove (34).
6. The post-earthquake function-recoverable PC frame beam-column connection node of claim 1, wherein spring washers are provided between the nut of the externally threaded bolt (10) and the wedge (31) and between the nut of the split bolt (6) and the wedge (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210038321.5A CN114960935B (en) | 2022-01-13 | 2022-01-13 | PC frame beam-column connection node with function recovery after earthquake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210038321.5A CN114960935B (en) | 2022-01-13 | 2022-01-13 | PC frame beam-column connection node with function recovery after earthquake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114960935A CN114960935A (en) | 2022-08-30 |
| CN114960935B true CN114960935B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210038321.5A Active CN114960935B (en) | 2022-01-13 | 2022-01-13 | PC frame beam-column connection node with function recovery after earthquake |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116378204B (en) * | 2023-03-01 | 2023-09-12 | 安徽省鸿玮建设有限公司 | Quickly-built assembled intelligent building and assembling method thereof |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB655517A (en) * | 1948-11-02 | 1951-07-25 | Poul Egon Malmstrom | Improved device for connecting structural elements for multi-storied buildings |
| CN103104039B (en) * | 2013-03-08 | 2015-07-22 | 郑州大学 | Assembled framework beam-column joint adopting cover plate connection and construction method thereof |
| CN103104040B (en) * | 2013-03-08 | 2015-10-14 | 郑州大学 | A kind of assembling frame bean column node and construction method adopting vertical connection |
| CN205776734U (en) * | 2016-05-15 | 2016-12-07 | 吴从晓 | A kind of assembly concrete connecting structure of beam column nodes |
| CN108999281A (en) * | 2018-09-05 | 2018-12-14 | 沈阳建筑大学 | A kind of novel precast concrete bean column node and its construction method |
| CN108951886B (en) * | 2018-10-10 | 2023-08-18 | 安徽建筑大学 | Prefabricated assembled concrete anti-seismic node |
| CN109183986A (en) * | 2018-11-08 | 2019-01-11 | 安徽建筑大学 | A kind of assembling frame Structure Beam-column connecting node and construction method |
| CN209874049U (en) * | 2019-04-04 | 2019-12-31 | 安徽建筑大学 | Assembled concrete frame beam column connected node |
| CN211080544U (en) * | 2019-08-30 | 2020-07-24 | 浙江中清大建筑产业化有限公司 | Combined type precast concrete beam column shockproof connecting device |
| CN110777960A (en) * | 2019-11-14 | 2020-02-11 | 长安大学 | Beam hinge assembly type self-resetting friction connection node structure and method |
| CN111485639A (en) * | 2020-04-20 | 2020-08-04 | 连云港市建筑设计研究院有限责任公司 | Prestress self-resetting node structure of external energy-consuming steel bar and assembling method |
| CN111877547B (en) * | 2020-07-27 | 2022-03-11 | 东南大学 | Assembled concrete beam column trunk type connecting joint |
| CN214302186U (en) * | 2020-11-20 | 2021-09-28 | 沈阳建筑大学 | Assembled concrete beam column node dry-type connection structure |
| CN113529946B (en) * | 2021-08-24 | 2022-06-07 | 西安建筑科技大学 | Beam column energy consumption connecting piece based on U-shaped plate and construction method thereof |
| CN113529944A (en) * | 2021-08-24 | 2021-10-22 | 西安建筑科技大学 | Beam-column energy-consumption connecting piece and construction method thereof |
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2022
- 2022-01-13 CN CN202210038321.5A patent/CN114960935B/en active Active
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