CN114775908A - Assembled connection structure with prefabricated post and girder steel - Google Patents
Assembled connection structure with prefabricated post and girder steel Download PDFInfo
- Publication number
- CN114775908A CN114775908A CN202210433120.5A CN202210433120A CN114775908A CN 114775908 A CN114775908 A CN 114775908A CN 202210433120 A CN202210433120 A CN 202210433120A CN 114775908 A CN114775908 A CN 114775908A
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- steel
- prefabricated
- wing plate
- plate
- prefabricated column
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
- E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2466—Details of the elongated load-supporting parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0452—H- or I-shaped
Abstract
The invention discloses an assembly type connecting structure with a prefabricated column and a steel beam, which comprises the prefabricated column and the steel beam, wherein the prefabricated column is a reinforced concrete prefabricated column, the prefabricated column is provided with I-shaped steel lugs, one part of each I-shaped steel lug is positioned in the prefabricated column, and the other part of each I-shaped steel lug protrudes out of the side surface of the prefabricated column; the steel beam is of an I-shaped steel structure and comprises an upper wing plate, a lower wing plate and a web plate, the upper wing plate and the lower wing plate are connected through the web plate, and the upper wing plate and the lower wing plate are symmetrically arranged relative to the plane where the web plate is located; the tip of girder steel and the tip butt joint of I-steel lug, and girder steel and I-steel lug pass through the connection steel sheet and are connected, and the connection steel sheet passes through bolted connection with girder steel and I-steel lug simultaneously. The assembly type connecting structure is mainly applied to concrete high-rise and multi-layer full assembly type frame structures, can meet the requirement of simple and convenient construction of full assembly buildings, is good in quality control, can be quickly assembled, and shortens the construction period.
Description
Technical Field
The invention relates to an assembly type connecting structure with a prefabricated column and a steel beam, and belongs to the technical field of assembly type.
Background
In the frame construction's assembly type structure, the connection structure of prefabricated post and precast beam is complicated, and the efficiency of construction is lower. For example, patent document CN101818521A discloses a steel node prefabricated reinforced concrete frame structure, in which the connection between prefabricated columns and prefabricated beams adopts steel nodes with complex structure, so that the connection at the nodes is very complex and inefficient.
In addition, frame structure buildings are generally required to face the following problems: the beams invade into the indoor use space, especially when the floor slab is completely placed above the beams, the whole beams are positioned in the indoor use space, and under the condition that the thickness of the floor slab is larger, the use space is further compressed, so that for the frame structure building, how to improve the space utilization rate is also a technical problem which is always sought to be solved in the industry.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides the assembly type connecting structure with the prefabricated columns and the steel beams, which is beneficial to simplifying the connecting nodes of the prefabricated columns and the beams and improving the construction efficiency. The specific technical scheme is as follows.
The utility model provides an assembled connection structure with prefabricated post and girder steel, includes prefabricated post and girder steel, its characterized in that:
the prefabricated column is a reinforced concrete prefabricated column, the prefabricated column is provided with an I-shaped steel lug, one part of the I-shaped steel lug is positioned in the prefabricated column, and the other part of the I-shaped steel lug protrudes out of the side surface of the prefabricated column;
the steel beam is of an I-shaped steel structure and comprises an upper wing plate, a lower wing plate and a web plate, the upper wing plate and the lower wing plate are connected through the web plate, and the upper wing plate and the lower wing plate are symmetrically arranged relative to the plane of the web plate;
the end part of the steel beam is in butt joint with the end part of the I-shaped steel lug, the steel beam is connected with the I-shaped steel lug through a connecting steel plate, and the connecting steel plate is simultaneously connected with the steel beam and the I-shaped steel lug through bolts.
By adopting the technical scheme, when the prefabricated column is prepared, a part of the I-steel lug needs to be embedded inside the prefabricated column, and the web plate of the I-steel lug and the web plate of the steel beam are provided with the through holes, so that the steel beam can be connected with the I-steel lug by utilizing the connecting steel plate and the bolts after the prefabricated column and the steel beam are hoisted in place, the construction method is very simple and efficient, the complex structure at the connecting node is avoided, the cost is saved, and the efficiency is improved.
Furthermore, the upper wing plate is provided with notches which are positioned at two sides of the web plate, and the width of the part of the upper wing plate with the notches is smaller than that of the corresponding lower wing plate below the notches;
the prefabricated floor slab comprises an upper wing floor slab and a reinforcing rib, the reinforcing rib is located on the lower surface of the upper wing floor slab, the end portion of the upper wing floor slab is supported on the upper wing plate of the steel beam, the end portion of the reinforcing rib is supported on the lower wing plate of the steel beam, and the reinforcing rib penetrates through the notch to avoid the upper wing plate of the steel beam.
The reinforcing rib is arranged, so that the strength of the whole prefabricated floor slab is kept or enhanced on the basis of reducing the thickness of the upper wing floor slab, and the indoor use space is fully utilized. Meanwhile, the prefabricated floor slab can be positioned by utilizing the gap of the steel beam, so that the installation and positioning of the prefabricated floor slab are greatly simplified, and the construction efficiency is further improved.
Further, the girder steel still including the reinforcing plate, the reinforcing plate simultaneously with go up pterygoid lamina, lower pterygoid lamina and web welded fastening connection. The reinforcing plate is favorable for enhancing the overall strength of the steel beam.
Furthermore, a connecting steel bar is arranged in the upper wing floor slab, and the end part of the connecting steel bar protrudes out of the upper wing floor slab and extends into the upper part of the prefabricated column. The upper side of the prefabricated column may be cast in place to anchor the ends of the connecting rebars to the cast in place portion.
Furthermore, reinforcing steel bars are arranged in the reinforcing ribs. The reinforcing steel bars are beneficial to enhancing the bearing capacity of the reinforcing ribs.
Further, the upper wing floor and the reinforcing rib are integrally formed. Preferably, the upper wing floor slab and the reinforcing rib are both made of concrete or ultra-high performance concrete.
Furthermore, the cross sections of the reinforcing ribs are in an inverted trapezoid shape. The inverted trapezoidal reinforcing rib is more favorable for reducing weight, and is convenient for the reinforcing rib to be clamped into the notch of the steel beam.
Furthermore, the prefabricated column also comprises vertical steel bars, the top ends of the vertical steel bars protrude out of the upper surface of the prefabricated column, the bottom ends of the vertical steel bars are fixedly connected with grouting sleeves, and the grouting sleeves are positioned at the bottom of the prefabricated column; the top during prefabricated post and the prefabricated post connection of below, the below the top of the vertical reinforcing bar of prefabricated post stretches into the top in the grout sleeve of prefabricated toe portion. The prefabricated post in top and the prefabricated post in below pass through grout muffjoint, and simple structure is reliable.
The assembly type connecting structure is mainly applied to concrete high-rise and multi-layer full assembly type frame structures, can meet the requirement of simple and convenient construction of full assembly buildings, is good in quality control, can be quickly assembled, and shortens the construction period.
Drawings
FIG. 1 is a schematic view of the fabricated connecting structure of the present invention (upper prefabricated column not shown);
FIG. 2 is a schematic view of a steel beam;
FIG. 3 is a schematic view of a precast floor slab;
FIG. 4 is a schematic view of the fabricated connecting structure of the present invention (illustrating the upper prefabricated column);
fig. 5 is a multi-story prefabricated building employing the prefabricated coupling structure of the present invention.
In the figure: precast column 1, girder steel 2, go up pterygoid lamina 2.1, lower pterygoid lamina 2.2, web 2.3, breach 2.4, reinforcing plate 2.5, precast floor slab 3, go up pterygoid lamina floor 3.1, stiffening rib 3.2, reinforcing bar 3.3, vertical reinforcing bar 4, grout sleeve 5, I-steel lug 6, connecting steel plate 7, bolt 8, connecting reinforcement 9.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
Referring to fig. 1 to 5 of the drawings, a fabricated connecting structure having prefabricated columns and steel beams includes prefabricated columns 1, steel beams 2 and prefabricated floor slabs 3:
the prefabricated column 1 is a reinforced concrete prefabricated column 1, the prefabricated column 1 is provided with I-steel lugs 6, one part of each I-steel lug 6 is positioned in the prefabricated column 1, one part of each I-steel lug 6 protrudes out of the side surface of the prefabricated column 1, and 2-4I-steel lugs 6 can be arranged on the prefabricated column corresponding to the number of steel beams 2 to be connected; the prefabricated column 1 further comprises vertical steel bars 4, the top ends of the vertical steel bars 4 protrude out of the upper surface of the prefabricated column 1, the bottom ends of the vertical steel bars 4 are fixedly connected with grouting sleeves 5, and the grouting sleeves 5 are located at the bottom of the prefabricated column 1; when the prefabricated post 1 of top and the prefabricated post 1 of below are connected, the top of the vertical reinforcement 4 of the prefabricated post 1 of below stretches into in the grout sleeve 5 of the prefabricated post 1 bottom of top.
As shown in fig. 2, the steel beam 2 is an i-steel structure, and includes an upper wing plate 2.1, a lower wing plate 2.2, and a web 2.3, the upper wing plate 2.1 and the lower wing plate 2.2 are connected by the web 2.3, and the upper wing plate 2.1 and the lower wing plate 2.2 are both symmetrically arranged with respect to a plane where the web 2.3 is located; the upper wing plate 2.1 is provided with notches 2.4, the notches 2.4 are positioned at two sides of the web plate 2.3, and the width of the part of the upper wing plate 2.1 with the notches 2.4 is smaller than the width of the lower wing plate 2.2 corresponding to the lower part of the notches 2.4. The steel beam 2 further comprises a reinforcing plate 2.5, and the reinforcing plate 2.5 is fixedly connected with the upper wing plate 2.1, the lower wing plate 2.2 and the web plate 2.3 in a welding mode.
As shown in fig. 3, the precast floor slab 3 includes an upper wing floor slab 3.1 and a reinforcing rib 3.2, the reinforcing rib 3.2 is located on the lower surface of the upper wing floor slab 3.1, and a reinforcing bar 3.3 is provided in the reinforcing rib 3.2. The reinforcing steel bars 3.3 are beneficial to enhancing the bearing capacity of the reinforcing ribs 3.2; preferably the upper wing floor 3.1 and the stiffener 3.2 are integrally formed. Preferably, the upper wing floor 3.1 and the reinforcing ribs 3.2 are made of concrete or ultra-high performance concrete.
During the construction, with the tip of girder steel 2 and the tip butt joint of I-steel lug 6, all set up the through-hole on the web of I-steel lug 6 and the web 2.3 of girder steel 2, girder steel 2 and I-steel lug 6 are connected through binding steel plate 7, binding steel plate 7 passes through bolted connection with girder steel 2 and I-steel lug 6 simultaneously.
After the steel beam 2 is connected with the I-steel lug 6 of the precast column 1, the precast floor slab 3 is hoisted, so that the end part of the upper wing floor slab 3.1 provided with the precast floor slab 3 is supported on the upper wing plate 2.1 of the steel beam 2, the end part of the reinforcing rib 3.2 is supported on the lower wing plate 2.2 of the steel beam 2, and the reinforcing rib 3.2 penetrates through the notch 2.4 to avoid the upper wing plate 2.1 of the steel beam 2. Preferably, the cross section of each reinforcing rib 3.2 is inverted trapezoidal, and the inverted trapezoidal reinforcing ribs 3.2 are more favorable for reducing the weight, and simultaneously, the reinforcing ribs 3.2 are convenient to be clamped into the notches 2.4 of the steel beam 2. The arrangement of the reinforcing rib 3.2 is beneficial to keeping or enhancing the strength of the whole precast floor slab 3 on the basis of reducing the thickness of the upper wing floor slab 3.1, and is beneficial to fully using indoor space. Meanwhile, the prefabricated floor slab 3 can be positioned by utilizing the gap 2.4 of the steel beam 2, so that the installation and positioning of the prefabricated floor slab 3 are greatly simplified, and the construction efficiency is further improved. Preferably, a connecting steel bar 9 is arranged in the upper wing floor, the end part of the connecting steel bar 9 protrudes out of the upper wing floor 3.1 and extends above the precast column 1, and the upper part of the precast column 1 can be cast in situ to anchor the end part of the connecting steel bar 9 to a cast-in-situ part (not shown).
By adopting the scheme of the invention, a concrete high-rise and multi-layer fully-assembled frame structure can be conveniently and quickly realized, the quality is controlled, the assembly can be quickly carried out, and the construction period is shortened.
The embodiments of the present invention are described above with reference to the drawings, and the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention is not intended to be limited to the embodiments shown above, which are intended to be illustrative rather than limiting, and many modifications may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides an assembled connection structure with prefabricated post and girder steel, includes prefabricated post (1) and girder steel (2), its characterized in that:
the prefabricated column (1) is a reinforced concrete prefabricated column, the prefabricated column (1) is provided with an I-shaped steel lug (6), one part of the I-shaped steel lug (6) is positioned in the prefabricated column (1), and the other part of the I-shaped steel lug protrudes out of the side surface of the prefabricated column (1);
the steel beam (2) is of an I-shaped steel structure and comprises an upper wing plate (2.1), a lower wing plate (2.2) and a web plate (2.3), the upper wing plate (2.1) and the lower wing plate (2.2) are connected through the web plate (2.3), and the upper wing plate (2.1) and the lower wing plate (2.2) are symmetrically arranged relative to the plane where the web plate (2.3) is located;
the end part of the steel beam (2) is in butt joint with the end part of the I-shaped steel lug (6), the steel beam (2) and the I-shaped steel lug (6) are connected through a connecting steel plate (7), and the connecting steel plate (7) is connected with the steel beam (2) and the I-shaped steel lug (6) through a bolt (8) simultaneously.
2. An assembled connecting structure with a prefabricated column (1) and a steel beam (2) according to claim 1, characterized in that the upper wing plate (2.1) is provided with a notch (2.4), the notch (2.4) is positioned at two sides of the web plate (2.3), the width of the part of the upper wing plate (2.1) with the notch (2.4) is smaller than the width of the corresponding lower wing plate (2.2) below the notch (2.4);
assembled connection structure is still including prefabricated floor (3), and prefabricated floor (3) are including last wing floor (3.1) and stiffening rib (2.5), stiffening rib (2.5) are located the lower surface of last wing floor (3.1), the tip of going up wing floor (3.1) support in last pterygoid lamina (2.1) of girder steel (2), the tip of stiffening rib (2.5) support in lower pterygoid lamina (2.2) of girder steel (2), stiffening rib (2.5) pass breach (2.4) are in order to dodge last pterygoid lamina (2.1) of girder steel (2).
3. An assembled connecting structure with a precast column (1) and a steel beam (2) according to claim 2, characterized in that a connecting reinforcement (9) is provided in the upper wing floor (3.1), and the end of the connecting reinforcement (9) protrudes out of the upper wing floor (3.1) and extends above the precast column (1).
4. A fabricated connecting structure with prefabricated columns (1) and steel beams (2) according to claim 2, characterized in that reinforcing bars (3.3) are provided in the reinforcing ribs (2.5).
5. A fabricated connecting structure with prefabricated columns (1) and steel beams (2) according to claim 2, characterised in that the upper wing floor (3.1) and the stiffening ribs (2.5) are integrally formed.
6. An assembled connecting structure with precast columns (1) and steel beams (2) according to claim 2, characterized in that the upper wing floor (3.1) and the reinforcing ribs (2.5) are made of concrete or ultra high performance concrete.
7. A fabricated connecting structure with precast columns (1) and steel beams (2) according to claim 2, characterized in that the cross-section of the reinforcing ribs (2.5) is in the shape of an inverted trapezoid.
8. The assembly type connecting structure with the prefabricated column (1) and the steel beam (2) according to claim 2 is characterized in that the prefabricated column (1) further comprises vertical steel bars (4), the top ends of the vertical steel bars (4) protrude out of the upper surface of the prefabricated column (1), the bottom ends of the vertical steel bars (4) are fixedly connected with grouting sleeves (5), and the grouting sleeves (5) are positioned at the bottom of the prefabricated column (1); the top when prefabricated post (1) and prefabricated post (1) of below are connected prefabricated post (1) of below, the top of the vertical reinforcement (4) of below prefabricated post (1) stretches into the top in grout sleeve (5) of prefabricated post (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210433120.5A CN114775908A (en) | 2022-04-24 | 2022-04-24 | Assembled connection structure with prefabricated post and girder steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210433120.5A CN114775908A (en) | 2022-04-24 | 2022-04-24 | Assembled connection structure with prefabricated post and girder steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114775908A true CN114775908A (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210433120.5A Withdrawn CN114775908A (en) | 2022-04-24 | 2022-04-24 | Assembled connection structure with prefabricated post and girder steel |
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| Country | Link |
|---|---|
| CN (1) | CN114775908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288291A (en) * | 2022-08-05 | 2022-11-04 | 石家庄铁路职业技术学院 | Building structure's reinforcement connecting device |
-
2022
- 2022-04-24 CN CN202210433120.5A patent/CN114775908A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288291A (en) * | 2022-08-05 | 2022-11-04 | 石家庄铁路职业技术学院 | Building structure's reinforcement connecting device |
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Application publication date: 20220722 |
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