CN115262858A - I-shaped steel nondestructive combination device and construction method - Google Patents
I-shaped steel nondestructive combination device and construction method Download PDFInfo
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- CN115262858A CN115262858A CN202211019935.5A CN202211019935A CN115262858A CN 115262858 A CN115262858 A CN 115262858A CN 202211019935 A CN202211019935 A CN 202211019935A CN 115262858 A CN115262858 A CN 115262858A
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- 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
- E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
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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
- E04B1/343—Structures characterised by movable, separable, or collapsible parts, e.g. for transport
- E04B1/34315—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts
- E04B1/34326—Structures characterised by movable, separable, or collapsible parts, e.g. for transport characterised by separable parts mainly constituted by longitudinal elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- 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
- E04C2003/0408—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 assembly or the cross-section
- E04C2003/0413—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 assembly or the cross-section being built up from several parts
- E04C2003/0417—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 assembly or the cross-section being built up from several parts demountable
-
- 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
- E04C2003/0426—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 material distribution in cross section
- E04C2003/0439—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 material distribution in cross section the cross-section comprising open parts and hollow parts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides an I-steel nondestructive combination device, which belongs to the technical field of building construction and comprises I-steels, T-shaped fasteners and groove-shaped connecting plates, wherein the two I-steels are overlapped, the groove-shaped connecting plates are clamped on two sides of the two I-steels at intervals, and the T-shaped fasteners are clamped between the two I-steels and fixed on the side edges of the groove-shaped connecting plates. The radius of gyration of the cross section of the combined device is greatly improved, the bearing capacity of the combined cross section is correspondingly and greatly improved compared with the bearing capacity of two single components with the same area, and the components which do not meet the original support condition can be changed into the components with excellent support bearing capacity by the combined connection technology.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an I-shaped steel nondestructive combination device and a construction method.
Background
The conventional method for combining I-shaped steel in civil construction comprises the following steps: the Y-axis direction turning radius of the I-steel 16a is small, the I-steel is conventionally used as a member mainly subjected to bending such as a beam, in order to meet the bearing capacity requirement of a back-jacking support, two I-steels need to be spliced and combined into a member with a large cross section, the turning radius in the Y-axis direction is greatly improved, the bearing capacity of the combined member is greatly improved, and the conventional splicing and combining technology is electric welding.
The prior art has the following disadvantages: (1) The I-steel welding combination welding has large workload, low welding efficiency and more working hours. (2) The I-steel welding belongs to special operation, and needs special operation workers to operate, so that the labor cost is high. (3) The I-shaped steel cannot be disassembled for use after being welded and combined, if the I-shaped steel needs to be disassembled, oxygen flame cutting is needed, the flange loss of the I-shaped steel is large, the I-shaped steel is difficult to reuse, and the method is not economical and environment-friendly.
In civil building civil construction sites in China, basement roofs need to be divided into a plurality of areas in a post-pouring belt mode in order to reduce the problem of shrinkage cracks of concrete, the post-pouring belt of the concrete is adopted to release stress generated by shrinkage of the concrete, so that the shrinkage stress of concrete slabs in the roofs is smaller than the tensile strength of the concrete, and the concrete is prevented from generating visible cracks. The flexible post-cast strip can be generally closed 60 days after concrete pouring, and in the period, the top plate of the basement, through which the post-cast strip passes, has to be supported and jacked back for reinforcement because of no bearing capacity. The method has a set of method for reinforcing the back top of the post-cast strip by each construction unit, but the method is different from the method. The reinforced material is generally a plurality of conventional fastener type steel pipe frames, steel pipe section steel and I-shaped steel welding combined members and the like.
The fastener type steel pipe frame is used as a post-cast strip support, the diameter of a steel pipe is only 48mm, the vertical rods, the horizontal cross rods and the cross braces must be connected through fasteners to form a stable and reliable stress support system, the vertical rods are close in distance and are about 1000mm generally, and the space of a basement influences the transportation of construction materials, the passing of operators, the installation of equipment pipelines and the like due to the isolation of the post-cast strip support frame body.
The steel pipe section steel is used as a post-cast strip support, the bearing capacity of the steel pipe section steel is high, the distance between the vertical rods can be set sparsely, the problem of construction inconvenience caused by a fastener type steel pipe frame can be solved, but the steel pipe section steel is a material which is not commonly used in the field and generally needs to be purchased from the market again; besides the application of the post-cast strip back-supporting, steel pipe section steel is less used in other places, and after the post-cast strip is closed, the steel pipe section steel can be only placed on site for stacking because of no other application, and the benefit is not high because of low material utilization rate.
The bearing capacity performance of the I-steel welding combination member is greatly the same as that of steel pipe section steel, a construction unit generally stores a large amount of I-steel, the I-steel is used as a back-jacking support, the existing I-steel material can be effectively utilized, but the I-steel cannot be disassembled for use after welding combination, if the I-steel is required to be disassembled, oxygen flame cutting is needed, the loss of the flange of the I-steel is large, the I-steel is difficult to reuse, and the I-steel welding combination member is uneconomical and environmentally-friendly.
Disclosure of Invention
The invention aims to provide a nondestructive combination device of I-shaped steel and a construction method, and solves the technical problems that the existing building reinforcement material is high in cost and cannot be recycled.
Two I-shaped steels are connected into a rod piece with a combined section through a simple fastener and a steel plate, the turning radius of the combined section in the weak axis direction is greatly improved, and the integral stable bearing capacity is improved. Because the flanges of the two I-shaped parts are not welded, in order to ensure that the combined section is stressed in a synergistic manner during supporting, the local structure must meet the requirement on stability.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a nondestructive composite set of I-steel, includes I-steel, T type fastener and cell type connecting plate, two I-steels are folded the setting mutually, and a plurality of cell type connecting plate interval card are established on the both sides of two I-steels, and T type fastener card is established between two I-steels to the side of fixed cell type connecting plate, the cell type connecting plate is used for the both sides of the fixed two I-steels of buckle, and T type fastener is used for the outside of buckle cell type connecting plate, makes cell type connecting plate and I-steel inseparable, and T type fastener sets up to the couple and is the fastener.
Further, T type fastener includes T type fastener web and T type fastener edge of a wing, and T type fastener web sets up to "L" type structure, and the one end and the T type fastener edge of a wing of T type fastener web are connected, and the inner wall at two I-steel junctions is established to T type fastener edge of a wing card, and the side outside at the cell type connecting plate is established to T type fastener web card.
Furthermore, a T-shaped fastener web circular hole is formed in the T-shaped fastener web, and the iron fixture is arranged to penetrate through the T-shaped fastener web circular hole to fix the T-shaped fastener.
Furthermore, the groove-shaped connecting plates are arranged into a groove-shaped steel structure, and the groove-shaped connecting plates are arranged on the two I-shaped steels at equal intervals and are clamped.
Furthermore, the scheme also comprises a wood wedge, wherein the wood wedge is arranged in a gap at the joint of the two I-shaped steels, and the upper end and the lower end of the wood wedge are tightly attached to the joint of the two I-shaped steels.
A construction method of an I-shaped steel nondestructive combination device comprises the following steps:
step 1: transversely placing skids on the ground every 0.8-1.2m, and then placing a first I-steel on the skids, wherein the long edge of the I-steel is parallel to the ground;
step 2: positioning marks of a groove-shaped connecting plate are made every 600mm on two flanges of the I-steel by using a steel ruler and a red pencil, the width of the groove-shaped connecting plate is 100mm, the clear distance is 500mm, and the marks are retested after the positioning marks on the flanges of the I-steel are finished;
and step 3: t-shaped fasteners are respectively placed on two sides of the groove-shaped connecting plate to be placed, web plates of the T-shaped fasteners are perpendicular to flanges of the I-shaped steel, and iron nails for temporary fixing are threaded through round holes of the web plates of the T-shaped fasteners;
and 4, step 4: after all the T-shaped fasteners are placed and temporarily fixed, placing a second I-shaped steel, wherein the second I-shaped steel and the first I-shaped steel are placed in parallel;
and 5: placing a groove-shaped connecting plate at the original marked position, and buckling the outer side flanges of the two I-shaped steels;
step 6: inserting a wooden wedge between the gaps at the butting positions of the flanges of the two I-shaped steels so as to clamp the wooden wedge, and then beating the wedge by using an iron hammer from one end of the I-shaped steel to the other end of the I-shaped steel so as to ensure that the groove-shaped connecting plate can not be loosened completely;
and 7: and clamping the web plate gap of the T-shaped fastener into the groove-shaped connecting plate, and then forcibly knocking the T-shaped fastener by using an iron hammer, wherein the T-shaped fastener is not loosened.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the slewing radius of the cross section of the combined device is greatly improved, the requirement that the slenderness ratio of a supporting member is not more than 150 is met, the supporting bearing capacity of the combined cross section is greatly improved compared with the bearing capacity of two single members with the same area, the stable bearing capacity of the supporting member is greatly improved, the original member which does not meet the supporting condition can be changed into a member with excellent supporting bearing capacity by the combined connection technology, a welding-free construction method is adopted, the special qualification requirement of special operation workers is not needed, the I-steel is fast and convenient to assemble and install, reliable in connection, convenient to popularize and disassemble, oxygen flame cutting is not needed, the I-steel is not damaged when being disassembled, the I-steel can be recycled, and the cost is effectively reduced.
Drawings
FIG. 1 is a side view of an I-steel joint assembly of the present invention;
FIG. 2 isbase:Sub>A schematic view of the A-A structure of FIG. 1;
FIG. 3 is a schematic view of the structure B-B of FIG. 2;
FIG. 4 is a schematic view of a T-shaped fastener of the present invention;
fig. 5 is a sectional view of a double-H-steel assembly of the present invention.
In the attached drawings, 1-I-shaped steel; 2-T type fasteners; 2-1-T type fastener web; 2-2-T type fastener flange; 2-3-T type fastener web circular hole; 3-a trough-shaped connecting plate; 4-wooden wedge.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
As shown in figure 1, the I-steel nondestructive combination device comprises I-steels 1, T-shaped fasteners 2 and groove-shaped connecting plates 3, wherein the two I-steels 1 are arranged in an overlapped mode, the groove-shaped connecting plates 3 are arranged on two sides of the two I-steels 1 at intervals in a clamped mode, and the T-shaped fasteners 2 are arranged between the two I-steels 1 in a clamped mode and fix the side edges of the groove-shaped connecting plates 3. I-steel 1 is worker 16a I-steel, still need use during concrete construction to be used for the cell type connecting plate to measure steel ruler and red pencil that the location divides the interval for novel iron hammer of connecting fastener construction, is used for assisting the skid of worker's I-steel built-up connection construction. The groove-shaped connecting plates 3 are used for buckling two sides of the fixed I-steel 1, and the T-shaped fasteners 2 are used for buckling the outer sides of the groove-shaped connecting plates 3, so that the groove-shaped connecting plates 3 are not separated from the I-steel 1, and the T-shaped fasteners 2 are arranged to be hooks.
The width of the groove-shaped connecting plate 3 is 100mm, the clear distance is 500mm, and the calculation principle is illustrated by taking a tool 16a combined cross-section component with the length of 3.5m as an example:
the single root tool 16a: the material Q235B has a gyration radius Iy =1.89cm, an inertia moment Iy =93cm4, an area A =26.1cm2
Slenderness ratio
Does not satisfy the stability factor of b-type section
Bearing capacity
The double-H-shaped steel combined section 2 is provided with 16a, as shown in figure 5: mass Q235B moment of inertia Iy =93cm4 area A =2X26.1=52.2cm2
Radius of gyration
Slenderness ratio
Satisfies the stability factor of b-type section
Bearing capacity
After the I-steel of the I16 a is combined, the turning radius of the cross section is improved by 2.53 times, the requirement that the slenderness ratio of a supporting member is not more than 150 is met, the supporting bearing capacity of the combined cross section is improved by 3.42 times compared with the bearing capacity of two single members with the same area, the stable bearing capacity of the supporting member is greatly improved, and the original members which do not meet the supporting condition can be changed into the members with excellent supporting bearing capacity through the combined connection technology.
In the embodiment of the invention, as shown in fig. 4, the T-shaped fastener 2 comprises a T-shaped fastener web 2-1 and a T-shaped fastener flange 2-2, the T-shaped fastener web 2-1 is arranged to be an L-shaped structure, one end of the T-shaped fastener web 2-1 is connected with the T-shaped fastener flange 2-2, the T-shaped fastener flange 2-2 is clamped on the inner wall of the joint of the two I-shaped steels 1, and the T-shaped fastener web 2-1 is clamped on the outer side of the side edge of the groove-shaped connecting plate 3.
The device furthest utilizes the existing I-shaped steel material of scene to use as the supporting member, need not to purchase again, improves the utilization ratio of current material. The influence on the transportation of construction materials, the passing of operators, the installation of equipment pipelines and the like is avoided. The efficiency of the I-steel connection built-up connection construction is improved, and the artificial timeliness is improved. The I-steel can be disassembled in a lossless mode after being combined and connected, can be recycled, and is energy-saving, environment-friendly, cost-reducing and efficiency-improving in construction management.
In the embodiment of the invention, a T-shaped fastener web circular hole 2-3 is formed in a T-shaped fastener web 2-1, and a binder is arranged to penetrate through the T-shaped fastener web circular hole 2-3 to fix the T-shaped fastener 2.T type fastener web round hole 2-3 sets up on one side of connecting handle for use iron decide the effect that realizes the buckle after inserting.
In the embodiment of the invention, the groove-shaped connecting plates 3 are arranged into a groove-shaped steel structure, and the groove-shaped connecting plates 3 are arranged on the two I-shaped steels 1 at equal intervals and are clamped.
In the embodiment of the invention, the scheme also comprises a wood wedge 4, wherein the wood wedge 4 is arranged in the gap at the joint of the two I-beams 1, and the upper end and the lower end of the wood wedge 4 are tightly attached to the joint of the two I-beams 1.
A construction method for I-steel nondestructive combination comprises the following steps:
the method comprises the following steps: and horizontally placing the skids on the ground every 1m, and then placing the first I-steel on the skids, wherein the long edge of the I-steel is parallel to the ground.
Step two: a steel ruler and a red pencil are used for making positioning marks of the groove-shaped connecting plate on two flanges of the I-steel every 600mm, the width of the groove-shaped connecting plate is 100mm, the clear distance is 500mm, and the marks are retested after the positioning marks on the flanges of the I-steel are finished.
Step three: t-shaped fasteners are respectively placed on two sides of the groove-shaped connecting plate to be placed, web plates of the T-shaped fasteners are perpendicular to flanges of the I-shaped steel, and iron nails for temporary fixing are threaded through round holes of the web plates of the T-shaped fasteners.
Step four: and after all the T-shaped fasteners are placed and fixed temporarily, placing a second I-steel, wherein the second I-steel is placed in parallel with the first I-steel.
Step five: and placing a groove-shaped connecting plate at the original marked position, and buckling the outer side flanges of the two I-shaped steels.
Step six: and inserting a wooden wedge between the gaps at the butt joint positions of the flanges of the two I-shaped steels so as to clamp the wooden wedge, and then beating the wedge by using an iron hammer from one end of the I-shaped steel to the other end of the I-shaped steel so as to ensure that the groove-shaped connecting plate cannot be loosened completely.
Step seven: and clamping the web plate gap of the T-shaped fastener into the groove-shaped connecting plate, and then forcibly knocking the T-shaped fastener by using an iron hammer, wherein the T-shaped fastener is not loosened.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (6)
1. The utility model provides a harmless composite set of I-steel which characterized in that: including I-steel (1), T type fastener (2) and cell type connecting plate (3), two I-steel (1) are folded mutually and are set up, a plurality of cell type connecting plate (3) interval card is established on the both sides of two I-steel (1), T type fastener (2) card is established between two I-steel (1), and the side of fixed cell type connecting plate (3), cell type connecting plate (3) are used for the both sides of the fixed two I-steel (1) of buckle, T type fastener (2) are used for the outside of buckle cell type connecting plate (3), make cell type connecting plate (3) and I-steel (1) inseparable, T type fastener (2) set up to the couple and are the fastener.
2. The i-steel nondestructive assembly device of claim 1, wherein: the T-shaped fastener (2) comprises a T-shaped fastener web (2-1) and a T-shaped fastener flange (2-2), the T-shaped fastener web (2-1) is arranged to be of an L-shaped structure, one end of the T-shaped fastener web (2-1) is connected with the T-shaped fastener flange (2-2), the T-shaped fastener flange (2-2) is clamped on the inner wall of the joint of the two I-shaped steels (1), and the T-shaped fastener web (2-1) is clamped on the outer side of the side edge of the groove-shaped connecting plate (3).
3. The I-steel nondestructive assembly device of claim 2, characterized in that: t-shaped fastener web round holes (2-3) are formed in the T-shaped fastener web (2-1), and the iron fixture penetrates through the T-shaped fastener web round holes (2-3) to fix the T-shaped fasteners (2).
4. The i-steel nondestructive assembly device of claim 1, wherein: the groove-shaped connecting plates (3) are arranged into a groove-shaped steel structure, and the groove-shaped connecting plates (3) are arranged on the two I-shaped steels (1) at equal intervals and are clamped.
5. The I-steel nondestructive assembly device of claim 1, characterized in that: the wooden wedge (4) is arranged in a gap at the joint of the two I-shaped steels (1), and the upper end and the lower end of the wooden wedge (4) are tightly attached to the joint of the two I-shaped steels (1).
6. The construction method of the I-steel nondestructive combination device according to claim 1, characterized in that: the method comprises the following steps:
step 1: transversely placing skids every 0.8-1.2m on the ground, and then placing a first I-shaped steel on the skids, wherein the long side of the I-shaped steel is parallel to the ground;
and 2, step: positioning marks of a groove-shaped connecting plate are made every 600mm on two flanges of the I-steel by using a steel ruler and a red pencil, the width of the groove-shaped connecting plate is 100mm, the clear distance is 500mm, and the marks are retested after the positioning marks on the flanges of the I-steel are finished;
and step 3: t-shaped fasteners are respectively placed on two sides of the groove-shaped connecting plate to be placed, web plates of the T-shaped fasteners are perpendicular to flanges of the I-shaped steel, and iron nails for temporary fixing are threaded through round holes of the web plates of the T-shaped fasteners;
and 4, step 4: after all the T-shaped fasteners are placed and temporarily fixed, placing a second I-shaped steel, wherein the second I-shaped steel and the first I-shaped steel are placed in parallel;
and 5: placing a groove-shaped connecting plate at the original marked position, and buckling the outer side flanges of the two I-shaped steels;
step 6: inserting a wooden wedge between the gaps at the butting positions of the flanges of the two I-shaped steels so as to clamp the wooden wedge, and then beating the wedge by using an iron hammer from one end of the I-shaped steel to the other end of the I-shaped steel so as to ensure that the groove-shaped connecting plate can not be loosened completely;
and 7: and clamping the web plate gap of the T-shaped fastener into the groove-shaped connecting plate, and then forcibly knocking the T-shaped fastener by using an iron hammer on the basis of no looseness of the T-shaped fastener.
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| CN202211019935.5A CN115262858B (en) | 2022-08-24 | 2022-08-24 | I-steel nondestructive combination device and construction method |
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| CN202211019935.5A CN115262858B (en) | 2022-08-24 | 2022-08-24 | I-steel nondestructive combination device and construction method |
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| CN115262858B CN115262858B (en) | 2023-09-29 |
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|---|---|---|---|---|
| BE664546A (en) * | 1964-04-27 | 1965-11-26 | ||
| US4123887A (en) * | 1977-07-06 | 1978-11-07 | Weinar Roger N | Strengthening of channel shaped building columns and beams |
| AU8943082A (en) * | 1981-10-16 | 1983-04-21 | Turner, G.J. | Structural beam/stud |
| US5553437A (en) * | 1990-05-03 | 1996-09-10 | Navon; Ram | Structural beam |
| US20120017532A1 (en) * | 2009-10-06 | 2012-01-26 | Straight Jr Robert L | Dust Control Cover for Channel |
| CN109138270A (en) * | 2017-06-16 | 2019-01-04 | 河南天丰钢结构建设有限公司 | A kind of steel construction boundling system combined member |
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| CN115262858B (en) | 2023-09-29 |
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