CN115142546A - Novel dry-type connection assembly type RC frame column node structure - Google Patents
Novel dry-type connection assembly type RC frame column node structure Download PDFInfo
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- CN115142546A CN115142546A CN202210502459.6A CN202210502459A CN115142546A CN 115142546 A CN115142546 A CN 115142546A CN 202210502459 A CN202210502459 A CN 202210502459A CN 115142546 A CN115142546 A CN 115142546A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 101
- 239000010959 steel Substances 0.000 claims abstract description 101
- 238000003466 welding Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 238000013461 design Methods 0.000 description 9
- 238000004364 calculation method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000005477 standard model Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a novel dry-type connection assembly type RC frame column node structure. The existing full-assembly RC frame structure connecting end has the disadvantages of complex structure, low strength, low reliability and poor anti-seismic performance. The invention comprises an upper node column and a lower node column, wherein an upper node column connecting piece and a lower node column connecting piece are arranged between the upper node column and the lower node column, and the upper column connecting piece is connected with the lower column connecting piece through a plurality of groups of connecting rod pieces; go up the column connecting piece and include that rectangle steel sheet hoop and welding are provided with steel sheet coupling assembling between two rectangle steel sheet hoops at the steel bottom plate of rectangle steel sheet hoop inner chamber one end with lower column connecting piece, steel sheet coupling assembling connects through multiunit connecting rod spare. The connecting structure of the invention forms a mode that the screw transmits shear stress and the upper and lower column connecting pieces transmit normal stress, and the force transmission path is clear and reliable; the installation and the disassembly are convenient, and the workload of the wet operation on the spot can be reduced.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a novel dry-type connection assembly type RC frame column node structure.
Background
As an important component of building industrialization, the fabricated building is an effective way to solve the problems of mutual disjunction and lagging production mode among design, production, construction and management in the house construction process. The existing fabricated specifications mainly adopt shear walls, and the houses along the railway are small in scale, wide in distribution, severe in construction conditions and inconvenient in wet construction.
The RC frame structure is a reinforced concrete structure. The reinforced concrete structure comprises a thin shell structure, a large template cast-in-place structure and a reinforced concrete structure building constructed by using a slip form, a lifting plate and the like; is a structure made of steel bars and concrete. The existing full-assembly type RC frame structure connecting end has the disadvantages of complex structure, low strength and reliability, and the seismic performance cannot meet the actual engineering requirements.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a novel dry-type connection assembly type RC frame column node structure which is simple and convenient in node structure, easy to install, high in connection strength and reliability among nodes and excellent in overall anti-seismic performance.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the novel dry-type connection assembly type RC frame column node structure comprises an upper node column and a lower node column, wherein the upper node column and the lower node column are fixedly connected through a node connecting part, the node connecting part comprises an upper node column connecting piece and a lower node column connecting piece, the upper node column connecting piece is connected with the bottom end of the upper node column, and the lower node column connecting piece is connected with the top end of the lower node column;
the bottom surface of the node upper column connecting piece is fixedly connected with a cross-shaped steel plate piece, the cross-shaped steel plate piece is cross-shaped in cross section and is formed by welding four steel plates vertically; the top surface of the node lower column connecting piece is fixedly connected with a cross-shaped inserting steel plate piece, and the cross-shaped inserting steel plate piece is integrally cross-shaped and comprises four mutually separated L-shaped steel plates; the cross-shaped steel plate pieces are inserted into the cross-shaped inserting steel plate pieces and fixedly connected through screws.
Furthermore, the node upper column connecting piece is formed by welding a plurality of rectangular steel plate hoops and a steel bottom plate, the side surface of each rectangular steel plate hoop is respectively connected with each side surface of the node upper column, and the steel bottom plate is fixedly connected with the bottom end of the node upper column;
the joint lower column connecting piece is formed by welding a plurality of rectangular steel plate hoops and a steel bottom plate, the side face of each rectangular steel plate hoop is connected with each side face of the joint lower column respectively, and the steel bottom plate is fixedly connected with the top end of the joint lower column.
Furthermore, a plurality of steel bars are longitudinally arranged inside the upper column of the node and are welded with the steel bottom plate on the upper column connecting piece of the node; the inside many reinforcing bars that vertically are provided with of post under the node, steel bottom plate welded connection on reinforcing bar and the post connecting piece under the node.
Furthermore, baffle plates are vertically welded at the end parts of the steel plates on the cross-shaped steel plate piece.
The invention has the beneficial effects that:
1) The connecting structure of the invention forms a mode that the screw transmits shear stress and the upper and lower column connecting pieces transmit normal stress, and the force transmission path is clear and reliable;
2) The invention has simple structure and low manufacturing cost, can be applied to the fields of railway house building structures and the like, and has wide market application prospect;
3) The invention adopts the screw for fixed connection, is convenient for installation and disassembly, can reduce the workload of on-site wet operation, improves the construction progress, is slightly limited by the environment, and solves the problem of performance reduction of the grouting material in a wet connection mode under repeated freeze thawing.
Drawings
Fig. 1 is an overall connection schematic diagram of a novel dry-type connection fabricated RC frame column joint structure according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a welding point of an upper column longitudinal rib of a node of a novel dry-type connection assembly type RC frame column node structure provided in an embodiment of the present invention;
fig. 3 is a schematic diagram of a welding point of a lower column longitudinal rib of a node of a novel dry-type connection assembled RC frame column node structure provided in an embodiment of the present invention;
fig. 4 is a schematic diagram of bolt pieces of a novel dry-joint fabricated RC frame column joint structure provided by an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a split of a node upper column connecting piece and a node lower column connecting piece of the novel dry-type connection assembly type RC frame column node structure according to an embodiment of the present invention;
fig. 6 is a schematic view of a cross-shaped steel plate of a novel dry-type connection assembly type RC frame column node structure provided in an embodiment of the present invention;
fig. 7 is a schematic view of a cross-shaped splicing steel plate of a novel dry-type connection assembly type RC frame column node structure provided by an embodiment of the present invention;
fig. 8 is a schematic connection diagram of a rectangular steel plate hoop and a steel bottom plate of a novel dry-type connection fabricated RC frame column node structure according to an embodiment of the present invention;
in the figure, a 1-node upper column, a 2-node upper column connecting piece, a 3-node lower column connecting piece, a 4-node lower column, a 5-node upper column longitudinal rib welding point, a 6-node lower column longitudinal rib welding point, a 7-bolt piece, an 8-nut piece, a 9-first through hole, a 10-second through hole, a 11-rectangular steel plate hoop, a 12-steel bottom plate, a 13-cross steel plate piece, a 14-cross splicing steel plate piece, a 15-baffle plate and a 16-L steel plate.
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
As shown in fig. 1, the present invention includes a node upper column 1 and a node lower column 4, the node upper column 1 and the node lower column 4 are fixedly connected by a node connecting member, the node connecting member includes a node upper column connecting member 2 and a node lower column connecting member 3;
as shown in fig. 8, the node upper column connecting piece 2 is formed by welding 4 rectangular steel plate hoops 11 and a steel bottom plate 12; the side surface of each rectangular steel plate hoop 11 is respectively connected with each side surface of the node upper column 1, and the steel bottom plate 12 is fixedly connected with the bottom end of the node upper column 1;
the node lower column connecting piece 3 has the same structure as the node upper column connecting piece 2 and is formed by welding 4 rectangular steel plate hoops 11 and a steel bottom plate 12; the side surface of each rectangular steel plate hoop 11 is respectively connected with each side surface of the lower node column 4, and the steel bottom plate 12 is fixedly connected with the top end of the lower node column 4;
as shown in fig. 6, a cross-shaped steel plate 13 is fixedly connected to the bottom surface of the node upper column connecting piece 2, the cross-shaped steel plate 13 is cross-shaped in cross section and is formed by vertically welding four steel plates, and each steel plate is milled with 4 first through holes 9; as shown in fig. 8, the baffle plates 15 are vertically welded to the steel plate ends of the cross-shaped steel plate pieces 13;
as shown in fig. 7, a cross-shaped inserting steel plate piece 14 is fixedly connected to the top surface of the node lower column connecting piece 3, and the cross-shaped inserting steel plate piece 14 is overall cross-shaped and comprises four mutually separated L-shaped steel plates 16; gaps for inserting the cross-shaped steel plate pieces 13 are reserved among the four L-shaped steel plates 16; a second through hole 10 is milled on the cross-shaped splicing steel plate 14;
as shown in fig. 4 and 5, the cross-shaped steel plate piece 13 is inserted into the cross-shaped insertion steel plate piece 14, and the bolt piece 7 passes through the second through hole 10 and the first through hole 9 and is fixedly connected through the nut piece 8;
as shown in fig. 2 and 3, a plurality of steel bars are longitudinally arranged inside the node upper column 1, the steel bars are welded with a steel bottom plate 12 on the node upper column connecting piece 2, and a node upper column longitudinal bar welding point 5 is arranged on the steel bottom plate 12 of the node upper column connecting piece 2; the inside many reinforcing bars that vertically are provided with of post 4 under the node, steel reinforcement and the steel bottom plate 12 welded connection on the post connecting piece 3 under the node, be provided with post longitudinal reinforcement welding point 6 under the node on the steel bottom plate 12 of post connecting piece 3 down.
The strength calculation of the invention is specifically as follows:
1) Calculation of welding strength of longitudinal bar and node
The formula for calculating the welding strength of the longitudinal ribs and the joints is as follows:
In the formula, fy is the yield strength of the steel bar, as is the section area of the steel bar, he is the calculated thickness of the butt weld, lw is the calculated length of the weld, f t w 、f c w -design values of tensile and compressive strength of the weld;
2) Calculation of the thickness of the Steel sole
The steel bottom plate receives the axle power load size of prefabricated post transmission and does:
the maximum bending moment on the bottom plate under the action of the axial force is as follows:
the steel bottom plate is ensured to have certain rigidity, the thickness of the steel bottom plate is not less than 14mm, and the calculation formula of the thickness of the steel bottom plate is as follows:
in the formula, N is a design value of axial force, A is an area of a base plate, a 1 The length of the free edge of the three-sided support plate or the length of the diagonal supported by two adjacent edges, beta, coefficient, determined by the ratio b1/a1 of the long and short edges, sigma N Stress under axial force, σ M Stress under action of bending moment, N-axial force design value, M-bending moment design value, A d -cross-sectional area of rib plate, γ -section plasticity development coefficient, W-section area modulus, k-pass coefficient, nf-number of friction surfaces, μ -friction surface anti-slip coefficient, N-number of bolts;
the maximum stress of the rib plate is as follows:
the calculation formula of the shearing resistance bearing capacity of the bolt is as follows:
the shear resistance bearing capacity calculation formula at the seam splicing interface is as follows:
V＝0.4N+bhq
q＝min[q s ,q c ]
in the formula, N is a design value of axial force, b is the width of a steel plate hoop, h is the length of the steel plate hoop, q is the size of distributed force, and a 1 Free edge length, b 1 Length perpendicular to the free edge, beta-coefficient, determined by b1/a1, f-design strength of the steel, f c -concreteAxial compressive strength, beta c Coefficient of influence of concrete strength, beta l Coefficient of increase in concrete strength, A ln -local compressed clear area of concrete.
The invention aims at the earthquake-proof detection of the novel dry-type connection assembly type RC frame column node structure, and comprises the following steps:
s1: analyzing a failure mechanism, optimizing a design scheme, determining design conditions, implementing a loading test and analyzing a test result;
data sorting and numerical simulation, performing numerical simulation analysis, test simulation comparison, establishing a standard model and performing parameter response analysis;
and (4) analyzing a calculation method, analyzing mechanical behavior, analyzing earthquake resistance, establishing a calculation method and designing the method.
S2: receiving a program storage medium input by a user, and enabling the stored computer program to enable the electronic equipment to execute a novel anti-seismic detection method of the dry-type connection assembly type RC frame column node structure;
s3: a computer program product stored on a computer readable medium, comprising a computer readable program that, when executed on an electronic device, provides a user input interface to implement a method of seismic detection of a novel dry-connect fabricated RC frame column node structure.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention is not limited to the embodiment examples, and any equivalent changes of the technical solution of the invention by the person skilled in the art after reading the description of the invention are covered by the claims of the present invention.
Claims (4)
1. Novel assembled RC frame post node structure is connected to dry-type, post (4) under post (1) and the node on the node, post (4) pass through node connecting part fixed connection, its characterized in that under post (1) and the node on the node: the node connecting part comprises a node upper column connecting piece (2) and a node lower column connecting piece (3), the node upper column connecting piece (2) is connected with the bottom end of the node upper column (1), and the node lower column connecting piece (3) is connected with the top end of the node lower column (4);
the bottom surface of the node upper column connecting piece (2) is fixedly connected with a cross-shaped steel plate piece (13), the cross-shaped steel plate piece (13) is cross-shaped in cross section and is formed by vertically welding four steel plates; the top surface of the node lower column connecting piece (3) is fixedly connected with a cross-shaped inserting steel plate piece (14), and the cross-shaped inserting steel plate piece (14) is in a cross shape and comprises four mutually separated L-shaped steel plates (16); the cross-shaped steel plate piece (13) is inserted into the cross-shaped inserting steel plate piece (14) and fixedly connected with the cross-shaped inserting steel plate piece through a screw.
2. The novel dry connect fabricated RC frame column node structure of claim 1, wherein: the node upper column connecting piece (2) is formed by welding a plurality of rectangular steel plate hoops (11) and a steel bottom plate (12), the side surface of each rectangular steel plate hoop (11) is respectively connected with each side surface of the node upper column (1), and the steel bottom plate (12) is fixedly connected with the bottom end of the node upper column (1);
the joint lower column connecting piece (3) is formed by welding a plurality of rectangular steel plate hoops (11) and a steel bottom plate (12), the side face of each rectangular steel plate hoop (11) is respectively connected with the side faces of the joint lower column (4), and the steel bottom plate (12) is fixedly connected with the top end of the joint lower column (4).
3. The novel dry connect assembled RC frame column joint structure of claim 2, wherein: a plurality of steel bars are longitudinally arranged in the upper node column (1), and the steel bars are welded with a steel bottom plate (12) on the upper node column connecting piece (2); the joint lower column (4) is internally and longitudinally provided with a plurality of steel bars, and the steel bars are welded with a steel bottom plate (12) on the joint lower column connecting piece (3).
4. The novel dry connect fabricated RC frame column node structure of claim 3, wherein: baffle plates (15) are vertically welded at the end parts of the steel plates on the cross-shaped steel plate pieces (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210502459.6A CN115142546A (en) | 2022-05-10 | 2022-05-10 | Novel dry-type connection assembly type RC frame column node structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210502459.6A CN115142546A (en) | 2022-05-10 | 2022-05-10 | Novel dry-type connection assembly type RC frame column node structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07259183A (en) * | 1994-03-18 | 1995-10-09 | Nishikawa Hisato | Column joining structure for building |
| CN108755950A (en) * | 2018-07-11 | 2018-11-06 | 上海应用技术大学 | Prefabricated concrete structure column and column rigid connection node and construction method |
| CN108797800A (en) * | 2018-06-19 | 2018-11-13 | 福建农林大学 | The prefabricated column connected node of assembly concrete-filled steel tube and its construction method |
| WO2021100707A1 (en) * | 2019-11-18 | 2021-05-27 | 構法開発株式会社 | Structure for joining steel pipe columns |
| CN113513086A (en) * | 2021-04-29 | 2021-10-19 | 西安建筑科技大学 | Assembled RC post connected node based on steel hoop board-steel tooth groove connecting piece |
| CN114000585A (en) * | 2021-11-17 | 2022-02-01 | 东北电力大学 | Precast concrete beam column connecting joint and connecting method |
-
2022
- 2022-05-10 CN CN202210502459.6A patent/CN115142546A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07259183A (en) * | 1994-03-18 | 1995-10-09 | Nishikawa Hisato | Column joining structure for building |
| CN108797800A (en) * | 2018-06-19 | 2018-11-13 | 福建农林大学 | The prefabricated column connected node of assembly concrete-filled steel tube and its construction method |
| CN108755950A (en) * | 2018-07-11 | 2018-11-06 | 上海应用技术大学 | Prefabricated concrete structure column and column rigid connection node and construction method |
| WO2021100707A1 (en) * | 2019-11-18 | 2021-05-27 | 構法開発株式会社 | Structure for joining steel pipe columns |
| CN113513086A (en) * | 2021-04-29 | 2021-10-19 | 西安建筑科技大学 | Assembled RC post connected node based on steel hoop board-steel tooth groove connecting piece |
| CN114000585A (en) * | 2021-11-17 | 2022-02-01 | 东北电力大学 | Precast concrete beam column connecting joint and connecting method |
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