CN117108075A - Method for connecting stressed steel bar and stiff steel column in stiff structure - Google Patents
Method for connecting stressed steel bar and stiff steel column in stiff structure Download PDFInfo
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- CN117108075A CN117108075A CN202311331026.XA CN202311331026A CN117108075A CN 117108075 A CN117108075 A CN 117108075A CN 202311331026 A CN202311331026 A CN 202311331026A CN 117108075 A CN117108075 A CN 117108075A
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- stiff
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 165
- 239000010959 steel Substances 0.000 title claims abstract description 165
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 25
- 239000011150 reinforced concrete Substances 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 210000001015 abdomen Anatomy 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 28
- 238000004904 shortening Methods 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000011372 high-strength concrete Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to the technical field of building construction, in particular to a method for connecting a stressed steel bar and a stiff steel column in a stiff structure, which is simple and convenient to operate and has few construction procedures, thereby shortening the construction period and reducing the cost. The connecting method is also suitable for welding H-shaped steel skeleton columns, round pipe steel skeleton columns, box-shaped steel skeleton columns, cross-shaped steel skeleton columns and the connection of special-shaped steel skeleton columns and steel bars, and avoids the problem of difficult welding of arc-shaped contact surfaces and special-shaped contact surface sleeves. The construction difficulty is reduced, and the construction quality can be ensured.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a method for connecting a stressed steel bar and a stiff steel column in a stiff structure.
Background
With the development of the building industry, the combination of different structures is also developed, the structural types are various, the stiff structure (SRC-steel reinforced concrete composite structure) is formed by adding steel bones into the original reinforced concrete beam, column and other components, and the mutual constraint between the steel bones and the high-strength concrete enables the stiff concrete structure to more effectively exert the respective advantages of the steel and the concrete, simultaneously overcomes the defect that the steel structure is easy to locally flex, increases the ductility of the structure and the components, and improves the brittle characteristic which is unfavorable for earthquake caused by the poor ductility of the high-strength concrete. The stiff concrete has the advantages of high strength, small cross section size of the member, strong bond strength with the concrete, saving the concrete, increasing the use space, reducing the construction cost, improving the construction quality and the like. The components consist of concrete, section steel, longitudinal steel bars and stirrups, and the basic components are beams and columns. The construction of the engineering has the advantages that the construction of the concrete structure and the construction of the steel structure are adopted, so that the work load of the cross combination of the engineering is large, the construction working procedures are complex, the construction environment and the operation conditions at the construction implementation stage are considered, the construction difficulty of the structure is very large, and the following three types of common main connection in the stiff structure are mainly adopted, namely 1: connecting a steel reinforced concrete beam and a steel reinforced concrete column; 2: connecting steel beams and steel reinforced concrete columns; 3: and (5) connecting the reinforced concrete beam and the steel reinforced concrete column. This patent is mainly directed at the third kind of connection, namely the connection of reinforced concrete roof beam and steel reinforced concrete post, and this kind of node is handled comparatively complicated. Relating to the combination of reinforced concrete profession and steel structure profession, if the treatment is not good, the safety of the structure has great hidden trouble and the increase of cost.
At present, a is usually adopted as a connecting node of the structure, as shown in figures 1 and 2; the longitudinal main rib of the concrete beam passes through the side edge of the flange of the steel rib column, and the holes in the steel rib web plate are communicated.
b is shown in figures 3 and 4; the longitudinal main rib of the concrete beam is directly connected with a connecting sleeve welded on the flange of the steel column, and stiffening ribs are arranged in the steel column at the horizontal position of the sleeve. The horizontal stiffening rib spacing of the column is preferably greater than 100mm to facilitate welding and concrete placement.
c is shown in figures 5 and 6; a section of short steel beam is arranged on the column steel rib and is lapped with the main rib in the beam. And a concrete stirrup hole is reserved on the web plate of the short steel beam.
All three node methods have great limitation, and as the number and the number of the longitudinal steel bars in the concrete beam are more than two, three rows are achieved. And the number of the reinforcing bars in each row is more, if the two ends are connected by adopting the connecting sleeve, if the reinforcing bars are whole, only one end of the reinforcing bars can be reliably screwed with the connecting sleeve on the steel skeleton column, and the other end of the reinforcing bars cannot be connected, if the reinforcing bars at the two ends are required to be reliably connected with the connecting sleeve on the steel skeleton column, the reinforcing bars can only be disconnected, the reinforcing bars are bound and lapped, or the middle of the reinforcing bars are connected by adopting a connector, and the cost and the expense are increased. If the flanges of the steel bar columns can not be hidden by the stressed steel bars of the multiple parts, the flanges of the steel bar columns penetrate through the web plates of the steel bar columns, if the steel bar columns penetrate through the web plates of the steel bar columns forcibly, a part of the steel bars are subjected to bending treatment, so that the construction procedure is increased, on the other hand, when the opening rate of the web plates of the steel bar columns is too much to exceed 25%, the web plates of the steel bar columns are required to be subjected to reinforcing treatment, and the construction difficulty is greater, and the cost is wasted. If the short steel beam and the steel bars are adopted for lap joint treatment, stirrup holes of the stiff columns are reserved on the web plates of the short steel beam, and once the number of rows of upper and lower reinforcing bars of the steel bars exceeds three rows, the short steel beam cannot be treated and is also connected by combining the sleeves. Therefore, the node processing is complex, labor-consuming and time-consuming, and the construction period is difficult to guarantee and the engineering cost is reduced.
Disclosure of Invention
The present invention aims to solve the above problems, and thus provides a method for connecting a stressed steel bar with a stiff steel column in a stiff structure.
The invention solves the problems, and adopts the following technical scheme:
before leaving the factory, the steel skeleton column of the steel skeleton concrete column is welded with two reinforcing plates respectively on four side surfaces of the steel skeleton column, the two reinforcing plates on the same surface are horizontally arranged up and down in parallel and are respectively arranged at the same height with the reinforcing plates on different surfaces, after the steel skeleton column is installed in place on site, two outer reinforcing steel bars of the uppermost row of longitudinal reinforcing steel bars of the reinforced concrete beam are positioned above the reinforcing plates on the adjacent surfaces and are tightly attached to the outer sides of flanges of the steel skeleton column, the reinforcing steel bars are welded with the steel skeleton column, one of the two inner adjacent steel bars penetrating through abdomen is perforated and anchored in a web plate of the steel skeleton column, and the rest middle reinforcing steel bars are welded with the steel skeleton column through the reinforcing plates; the connection mode of the lowest row of longitudinal bars of the reinforced concrete beam is the same as that of the highest row of longitudinal bars, two outer side steel bars of the middle row of longitudinal bars are positioned at two sides of a steel rib column and welded with the steel rib column, one web penetrating steel bar adjacent inwards to the two outer side steel bars is perforated and anchored in a steel rib column web, the end parts of the rest middle steel bars are respectively welded with a connecting plate, and the connecting plate is welded with a lap-joint plate; when the middle reinforcing steel bars are welded with the lapping plates and the middle reinforcing steel bars are welded with the connecting plates, the double-sided welding seams are required to be met for 5 days or the single-sided welding seams are required to be met for 10 days.
Compared with the prior art, the invention adopting the technical scheme has the outstanding characteristics that:
and (3) a step of: the invention provides a method for connecting a stressed steel bar and a stiff steel column in a stiff structure, which is also applicable to the connection of the steel bar and the steel column in other stiff structures, has the advantages of simple operation, few construction procedures and easy guarantee of connection quality, thereby shortening the construction period and reducing the cost.
And II: the invention uses the lap plate to connect with part of the steel bars, so that the other part of the steel bars penetrate through the steel rib column web plate, the requirements that the corner bars of the design requirements are required to penetrate through can be met, the integrity of the steel bars can be ensured, the lap connection of the steel bars is reduced, and meanwhile, the steel rib column web plate is reduced to open holes, so that the opening ratio is not more than 25%, and the strength of the steel rib column is ensured.
Thirdly,: because the lap plates are adopted in the connection nodes, no vertical connection plate is arranged between the upper lap plate and the lower lap plate, the preformed hole for the stirrup of the concrete column on the web plate of the short steel beam when the short steel beam is adopted for connection is omitted, the stirrup can pass through the lap plates, the stirrup is not required to be broken into a U shape or an L shape, the steel bar procedure is simplified, the site construction is convenient, simple and quick, and the cost can be reduced.
Fourth, the method comprises the following steps: the connecting method is also suitable for welding H-shaped steel rib columns, round pipe steel rib columns, box steel rib columns, cross steel rib columns and connecting special-shaped steel rib columns with steel bars, and the problem that arc-shaped contact surfaces and special-shaped contact surface sleeves are difficult to weld is avoided. The construction difficulty is reduced, and the construction quality can be ensured. And various detection tests required by welding the sleeve are reduced, so that the construction is convenient.
Preferably, the invention further adopts the technical scheme that:
a stiffening plate is arranged in the steel rib column, a through hole is formed in the center of the stiffening plate, and the stiffening plate is vertically fixed on the inner wall of the steel rib column.
The middle reinforcing steel bar ends of the uppermost row of longitudinal ribs and the lowermost row of longitudinal ribs are all positioned above the lapping plate and are lapped and welded with the lapping plate.
The welding seams between the connecting plates and the lapping plates are V-shaped welding seams, and the requirements of penetration welding are met during welding.
Drawings
FIG. 1 is a schematic diagram of a connection structure of a conventional connection mode "a" in the prior art;
FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;
FIG. 3 is a schematic diagram of a connection structure of a conventional connection mode "b" in the prior art;
FIG. 4 is a schematic cross-sectional view of B-B of FIG. 3;
FIG. 5 is a schematic diagram of a connection structure of a conventional connection mode "c" in the prior art;
FIG. 6 is a schematic cross-sectional view of the structure of C-C in FIG. 5;
FIG. 7 is a schematic top view of a connection structure according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of D-D in FIG. 7 according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a top view structure of a connection between a reinforcing plate and a reinforcing steel bar according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a connection structure between a middle reinforcing steel bar and a reinforcing plate of a middle row of longitudinal ribs of a reinforced concrete beam according to an embodiment of the invention;
fig. 11 is a schematic side view of a structure of a connecting structure of a reinforcing steel bar and a reinforcing steel bar according to an embodiment of the present invention;
marked in the figure as: the steel reinforced concrete column 1, the steel reinforced column 2, the outer steel bars 3, the web-penetrating steel bars 4, the middle steel bars 5, the steel sleeves 6, the short steel beams 7, the stirrup preformed holes 7-1, the reinforcing plates 8, the stiffening plates 9, the through holes 9-1, the connecting plates 10 and the reinforced concrete beams 11.
Description of the embodiments
The invention is further described below in connection with the following examples which are provided for the purpose of better understanding of the present invention and are, therefore, not to be construed as limiting the scope of the invention.
Referring to fig. 7-11, in the method for connecting a stressed steel bar and a stiff steel bar column in a stiff structure, before the steel bar column 2 of the steel bar concrete column 1 leaves a factory, respectively welding two reinforcing plates 8 on four sides of the steel bar column 2, arranging two reinforcing plates 8 on the same side horizontally up and down in parallel, respectively arranging the reinforcing plates 8 on different sides at the same height, after the steel bar column 2 is installed in place on site, arranging two outer reinforcing plates 3 of the uppermost row of longitudinal ribs of a reinforced concrete beam 11 above the reinforcing plates 8 on the adjacent sides tightly against the outer sides of flanges of the steel bar column 2, welding with the steel bar column 2, perforating and anchoring one abdomen penetrating reinforcing steel bar 4 adjacent inwards to the two outer reinforcing plates 3 in a web of the steel bar column 2, and welding the rest middle reinforcing steel bars 5 with the steel bar column 2 through the reinforcing plates 8; the connection mode of the lowest row of longitudinal bars of the reinforced concrete beam 11 is the same as that of the highest row of longitudinal bars, two outer side steel bars 3 of the middle row of longitudinal bars are positioned at two sides of the steel skeleton column 2 and welded with the steel skeleton column 2, one web penetrating steel bar 4 adjacent inwards to the two outer side steel bars 3 is perforated and anchored in a web of the steel skeleton column 2, the end parts of the rest middle steel bars 5 are respectively welded with a connecting plate 10, and the connecting plate 10 is welded with a lapping plate 8; when the middle reinforcing steel bar 5 is welded with the reinforcing steel bar lapping plate 8 and the middle reinforcing steel bar 5 is welded with the connecting plate 10, the double-sided welding seam is required to meet 5d or the single-sided welding seam is required to meet 10d.
A stiffening plate 9 is arranged in the steel rib column 2, a through hole 9-1 is formed in the center of the stiffening plate 9, and the stiffening plate 9 is vertically fixed on the inner wall of the steel rib column 2; the stiffening plate 9 can increase the tensile deformation performance of the steel rib column 2, and is provided with a through hole 9-1, so that later concrete pouring is facilitated.
The end parts of the middle reinforcing steel bars 5 of the uppermost row of longitudinal bars and the lowermost row of longitudinal bars are positioned above the lapping plate 8 and are lapped and welded with the lapping plate 8; the welding is flat welding, the operation is easy, and the welding quality can be ensured.
The welding seams between the connecting plate 10 and the reinforcing plate 8 are V-shaped welding seams, and the requirements of penetration welding are met during welding.
The invention provides a method for connecting a stressed steel bar and a stiff steel column in a stiff structure, which is also applicable to the connection of the steel bar and the steel column in other stiff structures, has the advantages of simple operation, few construction procedures and easy guarantee of connection quality, thereby shortening the construction period and reducing the cost. The invention uses the lap plate to connect with part of the steel bars, so that the other part of the steel bars penetrate through the steel rib column web plate, the requirements that the corner bars of the design requirements are required to penetrate through can be met, the integrity of the steel bars can be ensured, the lap connection of the steel bars is reduced, and meanwhile, the steel rib column web plate is reduced to open holes, so that the opening ratio is not more than 25%, and the strength of the steel rib column is ensured. Because the lap plates are adopted in the connection nodes, no vertical connection plate is arranged between the upper lap plate and the lower lap plate, the preformed hole for the stirrup of the concrete column on the web plate of the short steel beam when the short steel beam is adopted for connection is omitted, the stirrup can pass through the lap plates, the stirrup is not required to be broken into a U shape or an L shape, the steel bar procedure is simplified, the site construction is convenient, simple and quick, and the cost can be reduced. The connecting method is also suitable for welding H-shaped steel rib columns, round pipe steel rib columns, box steel rib columns, cross steel rib columns and connecting special-shaped steel rib columns with steel bars, and the problem that arc-shaped contact surfaces and special-shaped contact surface sleeves are difficult to weld is avoided. The construction difficulty is reduced, and the construction quality can be ensured. And various detection tests required by welding the sleeve are reduced, so that the construction is convenient.
The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the claims, but rather to cover all equivalent modifications within the scope of the present invention as defined by the appended claims.
Claims (4)
1. The method for connecting the stressed steel bar with the stiff steel column in the stiff structure is characterized by comprising the following steps of: before leaving the factory of the steel reinforced column of the steel reinforced concrete column, respectively welding two reinforcing plates on four sides of the steel reinforced column, wherein the two reinforcing plates on the same surface are horizontally arranged up and down in parallel and are respectively arranged at the same height with the reinforcing plates on different surfaces, after the steel reinforced column is installed in place on site, two outer reinforcing steel bars of the uppermost row of longitudinal reinforcing steel bars of the reinforced concrete beam are positioned above the reinforcing plates on the adjacent surfaces and are closely arranged on the outer sides of flanges of the steel reinforced column, and are welded with the steel reinforced column, one abdomen penetrating reinforcing steel bar which is inwards adjacent to the two outer reinforcing steel bars is perforated and anchored in a web plate of the steel reinforced column, and the rest middle reinforcing steel bars are welded with the steel reinforced column through the reinforcing plates; the connection mode of the lowest row of longitudinal bars of the reinforced concrete beam is the same as that of the highest row of longitudinal bars, two outer side steel bars of the middle row of longitudinal bars are positioned at two sides of a steel rib column and welded with the steel rib column, one web penetrating steel bar adjacent inwards to the two outer side steel bars is perforated and anchored in a steel rib column web, the end parts of the rest middle steel bars are respectively welded with a connecting plate, and the connecting plate is welded with a lap-joint plate; when the middle reinforcing steel bars are welded with the lapping plates and the middle reinforcing steel bars are welded with the connecting plates, the double-sided welding seams are required to be met for 5 days or the single-sided welding seams are required to be met for 10 days.
2. A method for connecting a stressed steel bar to a stiff steel bar column in a stiff structure as claimed in claim 1, wherein: a stiffening plate is arranged in the steel rib column, a through hole is formed in the center of the stiffening plate, and the stiffening plate is vertically fixed on the inner wall of the steel rib column.
3. A method for connecting a stressed steel bar to a stiff steel bar column in a stiff structure as claimed in claim 1, wherein: the middle reinforcing steel bar ends of the uppermost row of longitudinal ribs and the lowermost row of longitudinal ribs are all positioned above the lapping plate and are lapped and welded with the lapping plate.
4. A method for connecting a stressed steel bar to a stiff steel bar column in a stiff structure as claimed in claim 1, wherein: the welding seams between the connecting plates and the lapping plates are V-shaped welding seams, and the requirements of penetration welding are met during welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311331026.XA CN117108075A (en) | 2023-10-16 | 2023-10-16 | Method for connecting stressed steel bar and stiff steel column in stiff structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311331026.XA CN117108075A (en) | 2023-10-16 | 2023-10-16 | Method for connecting stressed steel bar and stiff steel column in stiff structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117108075A true CN117108075A (en) | 2023-11-24 |
Family
ID=88813032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311331026.XA Pending CN117108075A (en) | 2023-10-16 | 2023-10-16 | Method for connecting stressed steel bar and stiff steel column in stiff structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117108075A (en) |
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2023
- 2023-10-16 CN CN202311331026.XA patent/CN117108075A/en active Pending
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