CN110685363B - Concrete column and steel structure connecting assembly and construction method of floor building - Google Patents
Concrete column and steel structure connecting assembly and construction method of floor building Download PDFInfo
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- CN110685363B CN110685363B CN201910914967.3A CN201910914967A CN110685363B CN 110685363 B CN110685363 B CN 110685363B CN 201910914967 A CN201910914967 A CN 201910914967A CN 110685363 B CN110685363 B CN 110685363B
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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
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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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
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/10—Load-carrying floor structures formed substantially of prefabricated units with metal beams or girders, e.g. with steel lattice girders
Abstract
The invention relates to a concrete column and steel structure connecting assembly and a construction method of a floor building, wherein a plurality of lantern rings are coaxially stacked together from top to bottom in sequence, supporting plates for connecting the lantern rings at intervals are uniformly distributed on the outer peripheral walls of the lantern rings, and connectors are clamped in the lower parts of the supporting plates; the main reinforcement in the reinforcement hole on the lantern ring and the upper end and the lower end of the reinforcement cage in the lantern ring respectively extend into the upper concrete column and the lower concrete column, the connector can be welded or bolted with a profile steel frame of a steel structure floor, the self weight of a building is reduced, the integrity of the concrete column is kept, the bearing and bending resistance of the concrete column is guaranteed, the building speed of the building is accelerated, and the building cost is reduced.
Description
Technical Field
The invention relates to the technical field of novel buildings, in particular to a connecting assembly of a concrete column and a steel structure and a construction method of a floor building.
Background
The traditional reinforced concrete structure has the advantages of easily obtained materials, low manufacturing cost, good durability, high safety and the like, but the traditional reinforced concrete structure has heavy weight and long construction period; the steel structure building has the advantages of light total building weight, high construction speed, strong flexibility, energy conservation, environmental protection and the like, but the steel structure building has the problems of non-fire resistance, poor corrosion resistance, high manufacturing cost and the like.
At the moment, a novel structural form formed by combining a reinforced concrete column and a steel beam is gradually favored by more and more research workers, and the reinforced concrete column-steel beam combined structure can give full play to the superior compression resistance of the concrete column and the superior bending resistance of the steel beam, so that the whole structure has good energy consumption performance, has the advantages of a concrete structure and a steel structure, weakens the defects of the concrete structure and the steel structure, and is an economic and efficient structural form.
The current research situation and prospect of reinforced concrete column-steel beam combined structure combined nodes in China is disclosed in a text of reinforced concrete column-steel beam combined node research situation and prospect published in 35 th volume of supplement in 2017 of North China earthquake science by Zhaosheng, Shihui, Wanghailong and the like, and the situation that the reinforced concrete column-steel beam combined nodes are in a beam through type is adopted in China, and the beam through type inevitably weakens the integrity of the columns to a certain extent, so that the bearing capacity and the bending resistance of the concrete column are greatly weakened.
Disclosure of Invention
The invention provides a concrete column and steel structure connecting assembly and a construction method of a floor building, aiming at solving the problem that nodes in a beam through type reinforced concrete column-steel beam combined structure weaken the concrete column, and aiming at retaining the integrity of the concrete column, ensuring the pressure bearing and bending resistance of the concrete column, accelerating the construction speed of the building and reducing the construction cost.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a concrete column and steel structure connecting assembly, a plurality of lantern rings are coaxially stacked together from top to bottom in sequence, supporting plates for connecting the lantern rings at intervals are uniformly distributed on the outer peripheral walls of the lantern rings, and connectors are clamped in the lower parts of the supporting plates; the sleeve ring comprises a square groove sleeve ring and a dovetail groove sleeve ring, the square groove sleeve ring is an annular or frame-shaped plate body, a rectangular notch is formed in the edge of the square groove sleeve ring, and a plurality of first steel bar through holes which are uniformly distributed are formed in the square groove sleeve ring; the dovetail groove lantern ring is an annular or frame-shaped plate body, the edge of the dovetail groove lantern ring is provided with a trapezoidal notch, and the dovetail groove lantern ring is provided with a plurality of uniformly distributed second steel bar through holes; the square groove lantern rings are arranged above the dovetail groove lantern rings, the rectangular notches of the square groove lantern rings correspond up and down to form square grooves, and the trapezoidal notches of the dovetail groove lantern rings correspond up and down to form dovetail grooves; the supporting plate is clamped in the square groove and the dovetail groove; run through the main muscle that stretches out at both ends about having in first steel reinforcement through-hole and the second steel reinforcement through-hole, the steel reinforcement cage that both ends stretch out about the intra-annular equipartition of the square groove lantern ring and the dovetail lantern ring has, the lantern ring, a supporting plate, main muscle, steel reinforcement cage and connector are the steel and make, interconnect constitutes steel structure part together, the main muscle that stretches out steel structure part top and the upper end of steel reinforcement cage stretch into in the last concrete column of steel structure part top, be connected steel structure part and last concrete column, the main muscle that stretches out steel structure part below and the lower extreme of steel reinforcement cage stretch into in the lower concrete column of steel structure part below, be connected steel structure part and lower concrete column and constitute concrete column and steel structure coupling assembling, steel structure part inside pouring has and last concrete column, lower concrete column all links concrete as an organic.
Furthermore, the supporting plate is a vertical plate body, an upper groove body matched with the square groove in size and shape is arranged in the center of the upper portion of the supporting plate, a lower groove body matched with the dovetail groove in size and shape is arranged in the center of the lower portion of the supporting plate, and the upper groove body and the lower groove body of the supporting plate are coaxially connected together to form a slide way.
Furthermore, the inner end of the connector is a trapezoidal cylinder matched with the lower groove body at the lower part of the supporting plate, and the outer end of the connector is fixedly connected with a connecting plate with a bolt hole or an I-shaped steel connector.
Further, the number of the square groove lantern rings is not less than that of the dovetail groove lantern rings.
Furthermore, the number of the supporting plates is consistent with that of the square grooves or the dovetail grooves, and the supporting plates are multiple.
Further, the sum of the widths of the supporting plates is smaller than the outer circumference of the square groove lantern ring or the dovetail groove lantern ring.
Further, the inner diameter of the square groove lantern ring and the dovetail groove lantern ring is not less than 70% of the outer diameter.
Further, the square groove is a rectangular groove body, and the dovetail groove is a trapezoidal groove body.
A construction method of a concrete column steel structure floor building comprises the following steps:
A. pouring lower concrete columns with equal height at intervals according to the length required by design, roughening the top ends of the lower concrete columns, and reserving a pouring surface;
B. arranging a steel structure part at the top end of each lower concrete column;
C. pouring concrete above the steel structure part to pour the concrete into the steel structure part, pouring and fixing the lower concrete column and the steel structure part together, wherein after pouring, the concrete above the steel structure part is an upper concrete column, the top end of the upper concrete column is roughened, and a pouring surface is reserved;
D. mounting the connector into the lower part of the slideway of the support plate;
E. and repeating the operation steps B-D, and sequentially stacking steel structure parts above the upper concrete column so as to increase the building floors by forming a concrete column and steel structure connecting assembly.
Through the technical scheme, the invention has the beneficial effects that:
according to the connecting component for the concrete column and the steel structure, the steel structure part is embedded in the concrete column, the steel reinforcement cage penetrates through the rings of the square groove lantern ring and the dovetail groove lantern ring, the main reinforcement penetrates through the first steel reinforcement through hole and the second steel reinforcement through hole, the steel structure part can be well connected with the concrete column, the integrity of the concrete column is guaranteed, and the connecting part of the steel structure part and the concrete column is not the weak point of the concrete column, so that the compression resistance and the bending resistance of the building support column are guaranteed.
The lantern ring is connected with the connector through the dovetail groove, the steel structure floor can be quickly connected after the construction of one layer of concrete column is completed, the processes of steel bar laying, concrete pouring and curing of the reinforced concrete floor are reduced, and the construction speed of a building is accelerated.
The invention adopts the concrete column to support the steel structure floor, thereby reducing the utilization of steel and the construction cost of the building while ensuring the stability and the strength of the concrete column.
The dovetail groove and the square groove are arranged on the connecting assembly, so that the steel structure floor can be easily disassembled when the steel structure floor is reconstructed or replaced and maintained, the building can be rapidly maintained and reconstructed without damaging the whole building, and the connecting assembly has the advantages of quicker connection and nondestructive replacement and installation in later maintenance.
Drawings
FIG. 1 is a schematic structural view of a concrete column and steel structure connecting assembly according to the present invention;
FIG. 2 is a schematic view of the square collar of the present invention attached to a support plate;
FIG. 3 is a schematic view of the connection of the circular collar of the present invention to the support plate;
FIG. 4 is a schematic view of the construction of the square groove collar of the present invention;
FIG. 5 is a schematic view of a dovetail collar configuration of the present invention;
FIG. 6 is a schematic view of the support plate construction of the present invention;
FIG. 7 is a front view of the support plate of the present invention;
FIG. 8 is a sectional view taken along line A-A of FIG. 7;
FIG. 9 is a cross-sectional view taken along line B-B of FIG. 7;
FIG. 10 is a first schematic view of the connecting head structure of the present invention;
FIG. 11 is a second schematic view of the connecting head structure of the present invention;
FIG. 12 is a schematic view of the construction process of the present invention.
The reference numbers in the drawings are as follows: 1 is the lantern ring, 2 is the backup pad, 3 is the connector, 4a goes up concrete column, 4b lower concrete column, 5 is the connecting plate, 6 shape steel joint, 11 is the square groove lantern ring, 12 is the dovetail lantern ring, 21 is last cell body, 22 is lower cell body, 41 is the owner muscle, 42 is the steel reinforcement cage, 111 is the square groove, 112 is first reinforcing bar through-hole, 121 is the dovetail, 122 is the second reinforcing bar through-hole.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
as shown in fig. 1 to 12, in the connection assembly of the concrete column and the steel structure, a plurality of lantern rings 1 are coaxially stacked together from top to bottom in sequence, and supporting plates 2 for connecting the lantern rings at intervals are uniformly distributed on the peripheral wall of the lantern rings 1; the lantern ring 1 comprises a square groove lantern ring 11 and a dovetail groove lantern ring 12, the square groove lantern ring 11 is an annular or frame-shaped plate body, a rectangular notch is formed in the edge of the square groove lantern ring 11, and a plurality of first steel bar through holes 112 which are uniformly distributed are formed in the square groove lantern ring 11; the dovetail groove lantern ring 12 is an annular or frame-shaped plate body, the edge of the dovetail groove lantern ring 12 is provided with a trapezoidal notch, and the dovetail groove lantern ring 12 is provided with a plurality of uniformly distributed second steel bar through holes 122; the square groove lantern ring 11 is arranged above the dovetail groove lantern ring 12, the rectangular notches of the square groove lantern rings form square grooves 111 in an up-down corresponding mode, the trapezoidal notches of the dovetail groove lantern rings 12 form dovetail grooves 121 in an up-down corresponding mode, and the supporting plate 2 is clamped in the square grooves 111 and the dovetail grooves 121; the main reinforcement 41 with upper and lower ends extending out penetrates through the first reinforcement through hole 112 and the second reinforcement through hole 122, reinforcement cages 42 with upper and lower ends extending out are uniformly distributed in the rings of the square groove lantern ring 11 and the dovetail groove lantern ring 12, the connector 3 is clamped in the lower end of the supporting plate, the lantern ring 1, the supporting plate 2, the main reinforcement 41, the reinforcement cages 42 and the connector 3 are made of steel and are connected with each other to form a steel structure part, the upper ends of the main reinforcement 41 and the reinforcement cages 42 extending out of the upper part of the steel structure part extend into an upper concrete column 4a above the steel structure part, the steel structure part is connected with the upper concrete column 4a, the lower ends of the main reinforcement 41 and the reinforcement cages 42 extending out of the lower part of the steel structure part extend into a lower concrete column 4b below the steel structure part, the steel structure part is connected with the lower concrete column 4b to form a concrete column and steel structure, The lower concrete columns 4b are all connected into an integral concrete.
As shown in fig. 6 to 9, the supporting plate 2 is a vertical plate, an upper groove body corresponding to the square groove 111 in size and shape is arranged in the center of the upper part of the supporting plate 2, a lower groove body corresponding to the dovetail groove 121 in size and shape is arranged in the center of the lower part of the supporting plate 2, the upper groove body and the lower groove body of the supporting plate are coaxially connected together to form a slide way, and the lower part of the slide way is internally provided with a connector 3 in a clamping manner;
as shown in fig. 10 and 11, the inner end of the connector 3 is a trapezoidal cylinder matched with the lower groove body at the lower part of the support plate 2, the outer end of the connector 3 is fixedly connected with a connecting plate 5 with a bolt hole or an I-shaped steel joint 6, the connecting plate 52 and the steel joint 6 are both used for connecting a steel structure floor, wherein the connecting plate 5 is used for bolt connecting a steel structure floor frame with the bolt hole, and the steel joint 6 is used for directly welding and connecting the steel structure floor frame.
When the device is installed, a connector 3 is installed firstly, and then the outer end of the connector 3 is connected with a steel structure floor framework through a connecting plate 5 by a bolt or welded with the steel structure floor framework through a section steel connector 6; the steel structure floor frame can be welded into a whole, then the whole is connected through the connector 3, then the floor material is laid on the steel structure frame to manufacture the steel structure floor, when the steel structure floor is assembled, the connector 3 is firstly placed into the upper groove body on the upper portion of the supporting plate 2, the upper groove body is a square groove, the width is consistent from top to bottom, the connector 3 can be easily placed into the upper groove body on the upper portion of the supporting plate 2, the connector 3 slides downwards in the upper groove body until the connector is clamped in the lower groove body on the lower portion of the supporting plate 2, only the freedom degree of up-and-down movement exists in the lower groove body, and meanwhile, the connector is fixed in the lower groove body due to the limitation of the self weight of the connector 3 and cannot automatically slide out of.
The steel structure floor can be quickly connected after the construction of one layer of concrete column is finished, the processes of steel bar laying, concrete pouring and curing of the reinforced concrete floor are reduced, and the construction speed of the building is accelerated.
The quantity of dovetail lantern ring 12 is no less than to the quantity of square groove lantern ring 11, guarantee the height that highly is greater than the lower cell body of going up the cell body, because connector 3 is in the cell body is impressed downwards after getting into by last cell body, consequently, it highly is greater than lower cell body height to go up the cell body, avoid connector 3 can not the complete roll-off lower cell body when connector 3 is dismantled in the maintenance, influence the dismantlement of connector 3, and it then can make connector 3 under the complete roll-off of upwards to go up the cell body height to be greater than lower cell body, get into the cell body, and withdraw from coupling assembling from last cell body, if reform transform or change the maintenance to steel construction floor, the dismantlement steel construction floor that can relax, maintain and reform transform the building fast, and need not destroy the building wholly, show the advantage of high-speed joint and harmless the changing installation.
The square groove lantern ring 11 and the dovetail groove lantern ring 12 are circular or square frames and are respectively used for connecting circular or square concrete columns, so that the quick connection performance of various building types is guaranteed.
The number of the support plates 2 is the same as that of the square grooves 111 or the dovetail grooves 121, and the sum of the widths of the support plates 2 is smaller than the outer circumference of the square groove lantern ring 11 or the dovetail groove lantern ring 12, that is, the support plates 2 cannot completely cover the side faces of the square groove lantern ring 11 and the dovetail groove lantern ring 12, so that the support plates can enter the lantern rings 1 which are spaced from each other during concrete pouring, gaps can be filled rapidly, and air can be exhausted rapidly.
The inner diameters of the square groove lantern ring 11 and the dovetail groove lantern ring 12 are not less than 70% of the outer diameter, the integrity of the upper concrete column and the lower concrete column is preferentially guaranteed, and the compression resistance and the bending resistance of the upper concrete column and the lower concrete column are guaranteed.
The square groove 111 is a rectangular groove body, and the dovetail groove 121 is a trapezoidal groove body.
A construction method of a concrete column steel structure floor building comprises the following steps:
A. lower concrete columns 4b with equal height are poured at intervals according to the length required by the design, the top ends of the lower concrete columns 4b are roughened, and pouring surfaces are reserved;
B. arranging a steel structure part at the top end of each lower concrete column 4 b;
C. pouring concrete above the steel structure part to pour the concrete into the steel structure part, pouring and fixing the lower concrete column 4b and the steel structure part together, wherein after pouring, the concrete above the steel structure part is an upper concrete column 4a, the top end of the upper concrete column is roughened, and a pouring surface is reserved;
D. installing the connector 3 into the lower part of the slideway of the support plate 2;
E. and repeating the operation steps B-D, and sequentially laminating steel structure parts above the upper concrete column 4a, thereby increasing the building floor by forming a concrete column and steel structure connecting assembly.
The invention adopts the concrete column to support the steel structure floor, thereby reducing the utilization of steel and lowering the construction cost of the building while ensuring the stability.
As shown in fig. 12, a reinforcement cage 42 is arranged in the upper concrete column 4a and the lower concrete column 4b, a main reinforcement 41 is arranged outside the reinforcement cage 42, the reinforcement cage 42 penetrates through the square groove lantern ring 11 between the upper concrete column 4a and the lower concrete column 4b and the ring of the dovetail groove lantern ring 12, and the main reinforcement 41 penetrates through the first reinforcement through hole 112 and the second reinforcement through hole 122, so that the steel structure can be well jointed with the upper concrete column 4a and the lower concrete column 4 b.
Experiments prove that the concrete column provided with the connecting assembly has the advantages that the compressive strength is improved by 15% -28% and the bending resistance is improved by 33% -42% compared with the concrete column without the connecting assembly, and the connecting part of the connecting assembly and the concrete column is a reinforcing point of the concrete column, so that the compressive capacity and the bending resistance of the building supporting column are guaranteed.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made to the technical solution of the present invention within the scope of disclosure without departing from the spirit of the present invention.
Claims (9)
1. The connecting assembly is characterized in that a plurality of lantern rings (1) are coaxially stacked together from top to bottom in sequence, supporting plates (2) which are used for connecting the lantern rings (1) at intervals are uniformly distributed on the outer peripheral walls of the lantern rings (1), and connectors (3) are clamped in the lower parts of the supporting plates (2); the lantern ring (1) comprises a square groove lantern ring (11) and a dovetail groove lantern ring (12), the square groove lantern ring (11) is an annular or frame-shaped plate body, a rectangular notch is formed in the edge of the square groove lantern ring (11), and a plurality of first steel bar through holes (112) which are uniformly distributed and arranged are formed in the square groove lantern ring (11); the dovetail groove lantern ring (12) is an annular or frame-shaped plate body, the edge of the dovetail groove lantern ring (12) is provided with a trapezoidal notch, and the dovetail groove lantern ring (12) is provided with a plurality of second steel bar through holes (122) which are uniformly distributed and arranged; the square groove lantern rings (11) are arranged above the dovetail groove lantern rings (12), the rectangular notches of the square groove lantern rings (11) are vertically corresponding to form square grooves (111), and the trapezoidal notches of the dovetail groove lantern rings (12) are vertically corresponding to form dovetail grooves (121); the supporting plate (2) is clamped in the square groove (111) and the dovetail groove (121); the main reinforcement (41) extending out of the upper end and the lower end are penetrated in the first reinforcement through hole (112) and the second reinforcement through hole (122), reinforcement cages (42) extending out of the upper end and the lower end are uniformly distributed in the rings of the square groove lantern ring (11) and the dovetail groove lantern ring (12), the lantern ring (1), the supporting plate (2), the main reinforcement (41), the reinforcement cages (42) and the connectors (3) are made of steel, the steel structure part is formed by being connected with each other, the upper ends of the main reinforcement (41) and the reinforcement cages (42) extending out of the upper part of the steel structure part extend into an upper concrete column (4 a) above the steel structure part, the steel structure part is connected with an upper concrete column (4 a), the lower ends of the main reinforcement (41) and the reinforcement cages (42) extending out of the lower part of the steel structure part extend into a lower concrete column (4 b) below the steel structure part, the steel structure part and the lower concrete column, concrete which is connected with the upper concrete column (4 a) and the lower concrete column (4 b) into a whole is poured in the steel structure part.
2. A concrete column and steel structure connecting assembly according to claim 1, characterized in that the supporting plate (2) is a vertical plate body, the center of the upper part of the supporting plate (2) is provided with an upper groove body (21) which is matched with the square groove (111) in size and shape, the center of the lower part of the supporting plate (2) is provided with a lower groove body (22) which is matched with the dovetail groove (121) in size and shape, and the upper groove body (21) and the lower groove body (22) of the supporting plate (2) are coaxially butted together to form a slideway.
3. A concrete column and steel structure connection assembly according to claim 2, characterized in that, the inner end of the connector (3) is a trapezoidal cylinder matched with the lower groove body (22) at the lower part of the support plate (2), and the outer end of the connector (3) is fixedly connected with a connection plate (5) with a bolt hole or an I-shaped steel joint (6).
4. A concrete column and steel structure connection assembly according to claim 1, characterized in that the number of square groove collars (11) is not less than the number of dovetail groove collars (12).
5. A concrete column and steel structure connection assembly according to claim 4, characterized in that the number of the support plates (2) is the same as the number of the square grooves (111) or the dovetail grooves (121), and the number is multiple.
6. A concrete column and steel structure connection assembly according to claim 1, characterized in that the sum of the widths of the support plates (2) is smaller than the outer circumference of the square groove collar (11) or dovetail groove collar (12).
7. A concrete column and steel structure connection assembly according to claim 1, characterized in that the inner diameter of the square groove collar (11) and dovetail groove collar (12) is not less than 70% of the outer diameter.
8. A concrete column and steel structure connection assembly according to claim 1, characterized in that the square groove (111) is a rectangular groove body, and the dovetail groove (121) is a trapezoidal groove body.
9. A method of constructing a concrete column steel structure floor building using a concrete column and steel structure connection assembly of claim 2, comprising the steps of:
A. lower concrete columns (4 b) with equal height are poured at intervals according to the length required by the design, the top ends of the lower concrete columns (4 b) are roughened, and pouring surfaces are reserved;
B. arranging a steel structure part at the top end of each lower concrete column (4 b);
C. pouring concrete above the steel structure part to pour the concrete into the steel structure part, pouring and fixing a lower concrete column (4 b) and the steel structure part together, wherein after pouring, the concrete above the steel structure part is an upper concrete column (4 a), and the top end of the upper concrete column is roughened to reserve a pouring surface;
D. installing the connector (3) into the lower part of the slideway of the support plate (2);
E. repeating the operation steps B-D, and sequentially laminating steel structure parts above the upper concrete column (4 a), thereby increasing the building floor by forming a concrete column and steel structure connecting assembly.
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| CN201910914967.3A CN110685363B (en) | 2019-09-26 | 2019-09-26 | Concrete column and steel structure connecting assembly and construction method of floor building |
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| US8640419B2 (en) * | 2011-02-18 | 2014-02-04 | Senvex Co., Ltd. | Method of constructing prefabricated steel reinforced concrete (PSRC) column using angle steels and PSRC column using angle steels |
| US10619791B2 (en) * | 2013-03-14 | 2020-04-14 | Eaton Intelligent Power Limited | Channel framing with additional functional side |
| CN107916726B (en) * | 2017-12-21 | 2018-12-04 | 青岛理工大学 | Assembled self- recoverage circular steel tube concrete combined joint |
| CN208604765U (en) * | 2018-03-23 | 2019-03-15 | 新世界中国地产有限公司 | The connection component and steel-concrete combined structure system of girder steel and reinforced concrete structure |
| CN110258806A (en) * | 2019-07-17 | 2019-09-20 | 天津大学 | The mortise and tenon type node and spatial mesh structure of socket joint connection space network |
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