CN111042436B - Profile steel concrete tongue-and-groove for precast concrete beam - Google Patents
Profile steel concrete tongue-and-groove for precast concrete beam Download PDFInfo
- Publication number
- CN111042436B CN111042436B CN201911332340.3A CN201911332340A CN111042436B CN 111042436 B CN111042436 B CN 111042436B CN 201911332340 A CN201911332340 A CN 201911332340A CN 111042436 B CN111042436 B CN 111042436B
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- China
- Prior art keywords
- steel pipe
- concrete
- bars
- groove
- tongue
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 239000004567 concrete Substances 0.000 title claims abstract description 27
- 239000011178 precast concrete Substances 0.000 title claims abstract description 15
- 239000011150 reinforced concrete Substances 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 22
- 238000000034 method Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 210000002435 tendon Anatomy 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- 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
Abstract
The invention relates to a profile steel concrete tongue-and-groove for a precast concrete beam, which comprises a steel pipe (1), tie bars (2) and anchor bars (3), wherein the steel pipe (1) is buried in a secondary beam, concrete (11) is filled in the steel pipe (1), the tie bars (2) comprise vertical sections (22) and horizontal sections (23) which are connected through bent arc sections (21), the vertical sections (22) are welded on two sides of the steel pipe (1), and the anchor bars (3) are horizontally welded on the lower parts of two sides of one end, far away from the tie bars (2), of the steel pipe (1) close to the bottom surface. Compared with the prior art, the invention has the advantages of high bearing capacity, simple processing and manufacturing, high component installation efficiency and the like.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a profile steel concrete tongue-and-groove for a precast concrete beam.
Background
In an assembled concrete structure laminated floor, a main beam and a secondary beam are connected in a hinged manner. The hinge connection form mainly comprises two types:
(1) The main beam and the secondary beam are provided with key grooves and are connected with the secondary beams through post-cast concrete;
(2) The main beam is provided with a picking lug, and the secondary beam is provided with a concrete tongue-and-groove for placing connection;
the first method is characterized in that concrete is to be post-poured, construction difficulty is high, and the method does not accord with the characteristics of simple and quick structure of assembled concrete; in the second method, the main beam is provided with the picking lugs as the rest supports of the secondary beam rabbets, so that the weight of the main beam is increased, and the hoisting construction is not easy.
Disclosure of Invention
The invention aims to overcome the defects of the prior art that the construction difficulty is high, the hoisting construction is not easy and the like, and provides a profile steel concrete tongue-and-groove for a precast concrete beam.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a shaped steel concrete tongue-and-groove for precast concrete roof beam, includes steel pipe, lacing wire and anchor bar, the steel pipe buries in the secondary beam, the steel pipe intussuseption is filled with concrete, the lacing wire includes vertical section and the horizontal segment of connecting through the curved arc section, vertical section welding is in the steel pipe both sides, anchor bar horizontal welding is kept away from at the steel pipe the both sides lower part of the one end of lacing wire is close to the position of bottom surface.
Preferably, the steel pipe is a cold-formed rectangular steel pipe.
The height of the cold-bent rectangular steel pipe is 100-200 mm, and the wall thickness is 4-16 mm.
Preferably, the tie bars and the anchor bars are hot rolled ribbed bars.
The diameter of the anchor bar is 10-36 mm.
The diameter of the lacing wire is 10-36 mm.
Preferably, the curved angle of the curved section is 90 degrees, the diameter length of the vertical section is the same as the diameter length of the horizontal section, and the inner diameter length of the curved section is less than 10 times the diameter length of the vertical section and the horizontal section.
Preferably, the anchor bar comprises a U-shaped anchor bar, a straight anchor bar, a hook anchor bar or an anchor plate anchor bar.
Preferably, the concrete has a strength grade of from C30 to C50.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention omits the construction link of post-pouring concrete to the primary and secondary beam nodes, and improves the construction efficiency.
2. The invention eliminates the main beam lug and reduces the weight of the main beam.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic view of a U-shaped anchor bar of the present invention;
FIG. 4 is a schematic view of a straight anchor bar of the present invention;
FIG. 5 is a schematic view of a hook anchor of the present invention;
FIG. 6 is a schematic view of an anchor plate tendon of the present invention;
FIG. 7 is a schematic representation of a computational model of the present invention.
Reference numerals:
1-a steel pipe; 11-concrete; 2-lacing wires; 21-a curved section; 22-vertical section; 23-horizontal segment; 3-anchor bars.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
As shown in FIG. 1, the profile steel concrete tongue-and-groove for the precast concrete beam comprises a steel pipe 1, a lacing wire 2 and an anchor wire 3, wherein the steel pipe 1 is buried in a secondary beam, the steel pipe 1 is filled with concrete 11, the strength grade of the concrete 11 is C30-C50, the lacing wire 2 comprises a vertical section 22 and a horizontal section 23 which are connected through a bent arc section 21, as shown in FIG. 2, the vertical section 22 is welded on two sides of the steel pipe 1, the end face of the precast concrete beam of the steel pipe 1, which is separated into a cantilever section and a buried section, of the secondary beam, the welding process is welding rod arc welding, and the anchor wire 3 is horizontally welded at the positions, close to the bottom, of two sides of one end, far away from the lacing wire 2, of the steel pipe 1.
The steel pipe 1 is a cold-formed rectangular steel pipe, the height of the cold-formed rectangular steel pipe is 100-200 mm, and the wall thickness is 4-16 mm.
The length of the vertical section (excluding the welded part) of the lacing wire 2 is 0 to l a The length of the horizontal section is 0 to 1.6l a ，l a For the length of the tensioned rebar anchor.
The tie bars 2 and the anchor bars 3 are hot rolled ribbed steel bars, the corresponding welding processes are welding rod arc welding, and the two sides of the tie bars are connected with the steel pipe 1 through welding seams.
The tie bars 2 and the anchor bars 3 are made of HRB400 or HRB500 series steel bars, including HRB400, HRB400E, HRBF, HRBF400E, HRB, HRB500E, HRBF and HRBF500E, and the diameters are 10-36 mm.
The curved arc angle of the curved arc section 21 is 90 degrees, the diameter length of the vertical section 22 is the same as that of the horizontal section 23, and the inner diameter length of the curved arc section 21 is smaller than that of the vertical section 22 and the horizontal section 23 which are 10 times.
The anchor bar 3 comprises four forms of U-shaped anchor bars, straight anchor bars, hook anchor bars or anchor plate anchor bars.
As shown in the figure 3 of the drawings,the length of the U-shaped anchor bar straight section (excluding the welded part) is 0.6l a The angle of the bending arc is 180 degrees, and the inner diameter of the anchor rib bending arc section is half of the width of the steel pipe; as shown in FIG. 4, the straight anchor bar (excluding the welded portion) has a length l a The method comprises the steps of carrying out a first treatment on the surface of the As shown in FIG. 5, the hook angle of the hook anchor bar is 135 °, the hook inner diameter is 2d, the length of the straight line segment after bending is 5d, d is the diameter of the horizontal hook anchor bar, and the length of the hook anchor bar (excluding the welded portion) is 0.6l a The method comprises the steps of carrying out a first treatment on the surface of the As shown in FIG. 6, the length of the anchor plate web (excluding the welded portion) is 0.6l a 。
As shown in fig. 7, a is the length of the cantilever section of the steel pipe 1, b is the distance from the center of the tie bar 2 to the cantilever section, and l is the total length of the steel pipe 1; v is the shear design value of the cantilever section of the steel pipe 1, and the action point is positioned in the middle of the cantilever section; t is the design value of the tension of the cantilever section of the steel pipe 1; v (V) s The tension design value of the lacing wire 2 is set; t (T) s The tension design value of the anchor bar 3 is designed; v (V) c Reaction force design values are uniformly distributed on the embedded section of the steel pipe 1, the action point is the symmetrical position of the action point of the shear force design value of the cantilever section relative to the central axis of the steel pipe 1, and the tension design value of the lacing wire 2 is V after analysis s V (l-a)/(l-3 a/2-b), the design value T of the tension of the tendon 3 s Design value V of uniformly distributed counter force of embedded section of steel tube 1 =t c The bearable support reaction force is specifically 0 to 600kN, =v (a/2+b)/(l-3 a/2-b).
Example 1
The steel pipe 1 is a cold-bent rectangular steel pipe, the model is Q235B-100X 4 (I/Z) -JG/T178-2005, the length of a cantilever section is 100mm, and the length of the steel pipe is 540mm; the filled concrete strength grade is C40.
The lacing wire 2 adopts HRB400 steel bars with the diameter of 16mm, is connected with the steel pipe 1 by adopting welding rod arc welding, adopts E43 welding rods, has the length of a welding line of 90mm, has the size of a welding leg of 4mm, has the distance from the center of the lacing wire 2 to a cantilever section of 30mm, has the length of a vertical section 22 (excluding a welding part) of the lacing wire 2 of 140mm, has the length of a horizontal section 23 of 560mm, has a bending angle of 90 degrees and has a bending inner diameter of 100mm.
The anchor bar 3 adopts a U-shaped anchor bar, the U-shaped anchor bar adopts an HRB400 steel bar with the diameter of 16mm, the steel tube 1 is connected by adopting welding rod arc welding, the welding rod adopts an E43 welding rod, the welding line length is 90mm, the welding leg size is 4mm, the length of a straight section (excluding a welding part) of the anchor bar 3 is 300mm, the arc bending angle is 180 degrees, and the inner diameter is 50mm.
Furthermore, the particular embodiments described herein may vary from one embodiment to another, and the above description is merely illustrative of the structure of the present invention. All such small variations and simple variations in construction, features and principles of the inventive concept are intended to be included within the scope of the present invention. Various modifications or additions to the described embodiments or similar methods may be made by those skilled in the art without departing from the structure of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The steel reinforced concrete tongue-and-groove for the precast concrete beam is characterized by comprising a steel pipe (1), tie bars (2) and anchor bars (3), wherein the steel pipe (1) is buried in a secondary beam, concrete (11) is filled in the steel pipe (1), the tie bars (2) comprise vertical sections (22) and horizontal sections (23) which are connected through bent arc sections (21), the vertical sections (22) are welded on two sides of the steel pipe (1), and the anchor bars (3) are horizontally welded on positions, close to the bottom, of the lower parts of two sides of one end, far away from the tie bars (2), of the steel pipe (1);
the steel pipe (1) is a cold-bent rectangular steel pipe;
the lacing wires (2) and the anchor bars (3) are hot rolled ribbed steel bars.
2. The profiled steel concrete tongue-and-groove for precast concrete beams according to claim 1, wherein the height of the cold-formed rectangular steel pipe is 100-200 mm, and the wall thickness is 4-16 mm.
3. A profiled bar concrete tongue-and-groove for precast concrete beams according to claim 1, characterized in that the diameter of the anchor bars (3) is 10-36 mm.
4. The profiled bar concrete tongue-and-groove for precast concrete beam according to claim 1, characterized in that the diameter of the tie bar (2) is 10-36 mm.
5. The profiled steel concrete tongue-and-groove for precast concrete beams according to claim 1, wherein the curved angle of the curved section (21) is 90 °, the diameter lengths of the vertical section (22) and the horizontal section (23) are the same, and the inner diameter length of the curved section (21) is smaller than 10 times the diameter lengths of the vertical section (22) and the horizontal section (23).
6. A reinforced concrete tongue-and-groove for precast concrete beams according to claim 1, characterized in that the anchor bars (3) comprise U-shaped anchor bars, straight anchor bars, hook anchor bars or anchor plate anchor bars.
7. The profiled bar concrete tongue-and-groove for precast concrete beams according to claim 1, wherein the concrete (11) has a strength grade of C30 to C50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911332340.3A CN111042436B (en) | 2019-12-22 | 2019-12-22 | Profile steel concrete tongue-and-groove for precast concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911332340.3A CN111042436B (en) | 2019-12-22 | 2019-12-22 | Profile steel concrete tongue-and-groove for precast concrete beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111042436A CN111042436A (en) | 2020-04-21 |
| CN111042436B true CN111042436B (en) | 2024-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911332340.3A Active CN111042436B (en) | 2019-12-22 | 2019-12-22 | Profile steel concrete tongue-and-groove for precast concrete beam |
Country Status (1)
| Country | Link |
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| CN (1) | CN111042436B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962667A (en) * | 2020-08-27 | 2020-11-20 | 上海天华建筑设计有限公司 | Connecting device for precast concrete beam |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203808261U (en) * | 2014-05-04 | 2014-09-03 | 长沙远大住宅工业有限公司 | Prefabricated superimposed main beam and auxiliary beam connecting member |
| CN204753843U (en) * | 2015-07-14 | 2015-11-11 | 江苏建筑职业技术学院 | PC primary and secondary roof beam bolted connection node |
| CN207878644U (en) * | 2018-01-24 | 2018-09-18 | 青岛腾远设计事务所有限公司 | A kind of double steel plate tongue and groove connecting node |
| CN208280325U (en) * | 2018-03-06 | 2018-12-25 | 广东省建筑设计研究院 | The prefabricated assembled primary and secondary beam connecting node of building structure |
| CN208650259U (en) * | 2018-07-04 | 2019-03-26 | 湖北工业大学 | Girder preformed groove secondary beam back insertion type connecting joint structure |
| CN211775089U (en) * | 2019-12-22 | 2020-10-27 | 同济大学 | Section steel concrete tongue-and-groove for precast concrete beam |
-
2019
- 2019-12-22 CN CN201911332340.3A patent/CN111042436B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203808261U (en) * | 2014-05-04 | 2014-09-03 | 长沙远大住宅工业有限公司 | Prefabricated superimposed main beam and auxiliary beam connecting member |
| CN204753843U (en) * | 2015-07-14 | 2015-11-11 | 江苏建筑职业技术学院 | PC primary and secondary roof beam bolted connection node |
| CN207878644U (en) * | 2018-01-24 | 2018-09-18 | 青岛腾远设计事务所有限公司 | A kind of double steel plate tongue and groove connecting node |
| CN208280325U (en) * | 2018-03-06 | 2018-12-25 | 广东省建筑设计研究院 | The prefabricated assembled primary and secondary beam connecting node of building structure |
| CN208650259U (en) * | 2018-07-04 | 2019-03-26 | 湖北工业大学 | Girder preformed groove secondary beam back insertion type connecting joint structure |
| CN211775089U (en) * | 2019-12-22 | 2020-10-27 | 同济大学 | Section steel concrete tongue-and-groove for precast concrete beam |
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| Publication number | Publication date |
|---|---|
| CN111042436A (en) | 2020-04-21 |
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