CN115419214A - Section steel concrete beam - Google Patents
Section steel concrete beam Download PDFInfo
- Publication number
- CN115419214A CN115419214A CN202211196599.1A CN202211196599A CN115419214A CN 115419214 A CN115419214 A CN 115419214A CN 202211196599 A CN202211196599 A CN 202211196599A CN 115419214 A CN115419214 A CN 115419214A
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- Prior art keywords
- steel
- rope
- concrete beam
- ropes
- shaped steel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 124
- 239000010959 steel Substances 0.000 title claims abstract description 124
- 239000004567 concrete Substances 0.000 title claims abstract description 38
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention belongs to the technical field of building application, and particularly relates to a steel reinforced concrete beam. Including the concrete beam body and set up this internal shaped steel at the concrete beam, the peripheral parcel of shaped steel has the reinforcing bar rack, be provided with the rope on the lateral wall of shaped steel, the rope includes central rope and winding and restricts the outlying connection rope at central rope, wherein, the one end connection that shaped steel was kept away from to central rope is on the reinforcing bar rack, the one end interval that shaped steel was kept away from to the connection rope breaks away from the winding center rope and is the form of dispersing and sets up the periphery at central rope, rope evenly distributed is on the lateral wall of shaped steel. The invention improves the structure of the traditional steel reinforced concrete beam, realizes the connection between the section steel and the reinforcing steel bar net rack by using the rope arranged on the side wall of the section steel, and strengthens the connection between the section steel and the concrete by using the disassembling treatment of the winding structure of the rope, thereby achieving the purpose of improving the integrity of the steel reinforced concrete beam.
Description
Technical Field
The invention belongs to the technical field of building application, and particularly relates to a steel reinforced concrete beam.
Background
The structural steel concrete structure (SRC for short) is formed by embedding structural steel into a reinforced concrete member, has high bearing capacity, high rigidity and good shock resistance, solves the problems of fire resistance, easy rusting and instability of the traditional steel structure, and has the following advantages: compared with a reinforced concrete structure: (1) small cross-sectional size: due to the limitation of the steel content of the reinforced concrete structure, under the condition that the cross section sizes are the same, the bearing capacity of the SRC component is higher, the using area and the net height of a building can be increased, and the self weight of the building is reduced; (2) high bearing capacity: due to the combined action of the profile steel and the concrete, the SRC member has higher bearing capacity and can bear the load, the construction of the profile steel concrete structure can be carried out under the self weight and the construction load of the member without waiting for the poured concrete to reach higher strength, and the construction period is shorter; (3) good anti-seismic performance: the ductility and the energy consumption capability of the section steel concrete structure are greatly improved compared with the reinforced concrete structure.
Compared with a steel structure: 1. the section steel is wrapped by concrete, so that the fire resistance and corrosion resistance of the member are greatly improved; 2. the induction to the temperature change of the external environment is small, and the deformation caused by the temperature is small; 3. the concrete can improve the buckling-restrained capacity of the section steel by restraining the section steel. 4. More steel can be saved.
According to different section forms of the section steel, the section steel concrete member can be divided into a solid-web type and a hollow-web type. The solid-web section steel has different section forms such as round, square, H-shaped, T-shaped and the like, and because the section of the solid-web section steel is not weakened, the performance of the solid-web section steel is more excellent, and the solid-web section steel is widely applied to large and medium-sized structures; the existence of the hollow section steel enables the section steel and the concrete to have better cohesiveness, and the integrity of the member and the structure is enhanced. However, the integrity of the steel section of the solid-web type steel reinforced concrete is also poor in cohesiveness and further in integrity of the construction, and the integrity of the steel reinforced concrete beam as a load-bearing unit in a building is related to the overall quality and service life, so how to further improve the integrity of the steel reinforced concrete beam is a current important research direction.
Disclosure of Invention
Aiming at the technical problem that the existing steel reinforced concrete beam is poor in integrity, the invention provides the steel reinforced concrete beam which is reasonable in design and can effectively improve the cohesiveness between concrete and section steel so as to achieve the purpose of improving the integrity.
In order to achieve the purpose, the invention adopts the technical scheme that the invention provides a profile steel concrete beam which comprises a concrete beam body and profile steel arranged in the concrete beam body, wherein a steel bar net rack is wrapped on the periphery of the profile steel, ropes are arranged on the side wall of the profile steel and comprise central ropes and connecting ropes wound on the periphery of the central ropes, one ends of the central ropes, far away from the profile steel, are connected to the steel bar net rack, one ends of the connecting ropes, far away from the profile steel, are separated from the wound central ropes at intervals and are arranged on the periphery of the central ropes in a divergent manner, and the ropes are uniformly distributed on the side wall of the profile steel.
Preferably, a connecting column is arranged on the side wall of the section steel, and the rope is fixed on the side wall of the section steel through the connecting column.
Preferably, a plurality of ropes are arranged on the connecting column, and the connecting column groups the ropes to be uniformly distributed on the side wall of the section steel.
Preferably, the ropes on the connecting columns are connected to the reinforcing steel bar net rack in a divergent manner.
Preferably, the connecting columns which are adjacent to each other at the left and the right are arranged in a staggered mode up and down.
Preferably, the central rope is a steel wire or a steel wire rope, and the connecting rope is a steel wire.
Preferably, the central rope is a steel wire or a steel wire rope, and the connecting rope is a carbon fiber rope.
Compared with the prior art, the invention has the advantages and positive effects that,
1. the invention provides a steel reinforced concrete beam, which is characterized in that the structure of the traditional steel reinforced concrete beam is improved, the connection between profile steel and a reinforcing steel bar net rack is realized by using a rope arranged on the side wall of the profile steel, and the connection between the profile steel and concrete is strengthened by using the disassembling treatment of a winding structure of the rope, so that the aim of improving the integrity of the steel reinforced concrete beam is fulfilled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 is a cross-sectional view of a section steel concrete beam provided in example 1;
FIG. 2 is a schematic structural view of the section steel provided in example 1;
fig. 3 is a schematic structural view of a rope provided in example 1;
in the above figures, 1, a concrete beam body; 2. section steel; 3. connecting columns; 4. a rope; 41. a center cord; 42. connecting ropes; 5. a steel bar net rack.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Example 1, as shown in fig. 1 to 3, this example is intended to improve the integrity of a steel section 2 concrete beam, and it is considered that the existing main method for improving the integrity is to modify the surface of the steel section 2 by a chemical method to improve its adhesion, but the effect is not obvious, and for this reason, this example treats it from a physical aspect to achieve the purpose of improving the integrity.
In order to reach above-mentioned purpose, shaped steel 2 concrete beam, including concrete beam body 1 and the shaped steel 2 of setting in concrete beam body 1, in this embodiment, shaped steel 2 adopts H shaped steel 2, has reinforcing bar net rack 5 at the peripheral parcel of shaped steel 2, and reinforcing bar net rack 5 is current common structure, and it contains horizontal reinforcing bar and longitudinal reinforcement and waist muscle, and its parcel is in the periphery of shaped steel 2, and above structure is current common structure, so in this embodiment, do not add the detailed description.
In order to solve the problem, in the present embodiment, the ropes 4 are disposed on the side walls of the section steel 2, and specifically, the connecting columns 3 are disposed on the side walls of the section steel 2, and the ropes 4 are fixed on the side walls of the section steel 2 through the connecting columns 3. The connecting column 3 is in a full-tubular or semi-tubular arrangement, for example, it is fixed on the side wall of the section steel 2 by welding, then it is in a semi-tubular arrangement, the connecting part with the section steel 2 is a solid structure, the connecting part with the rope 4 is a tubular structure, it fixes the rope 4 on it by extrusion; if the bolt fastening is adopted, the connecting column 3 is designed in a threaded tubular structure, and thus is in a full tubular structure, and in the embodiment, the full tubular structure is selected in consideration of the adjustability of the implementation.
In order to achieve the purpose of integrity, in this embodiment, the rope 4 includes a central rope 41 and a connecting rope 42 wound around the periphery of the central rope 41, a plurality of connecting ropes 42 arranged in parallel are wound around the periphery of one central rope 41, wherein an end of the central rope 41 far away from the section steel 2 is connected to the steel bar net rack 5, the purpose of the connecting rope is to show the connection between the section steel 2 and the steel bar net rack 5, and in order to strengthen the connection between the section steel 2 and the concrete body, an end of the connecting rope 42 far away from the section steel 2 is separated from the wound central rope 41 and arranged around the central rope 41 in a divergent manner, which means that the ends of the connecting ropes 42 are not wound around the central rope 41, and thus the separated windings are formed, and in order to achieve the purpose of strengthening the connection, in this embodiment, an end of the connecting rope 42 separated from the central rope 41 is arranged around the central rope 41 in a divergent manner, so that the rope 4 can be placed at multiple angles to achieve more contact with the concrete body, thereby improving integrity.
Of course, the ropes 4 are evenly distributed on the side walls of the profile steel 2 in order to improve the integrity effect. Each connecting column 3 is provided with a plurality of ropes 4, and the ropes 4 are uniformly distributed on the side wall of the section steel 2 in groups by the connecting columns 3. The grouping here means that each connecting column 3 is a group of ropes 4, the group of ropes 4 is at least five, including one in the middle and four around, of course, nine, which ensures that one is arranged in the middle, then the other is four times the speed, and the purpose of this arrangement is to connect the ropes 4 on the connecting column 3 to the reinforcing steel bar net rack 5 in a divergent manner. Like this, form the connection that more disperses, make the connection that forms between shaped steel 2, reinforcing bar rack 5 and the concrete body inseparabler, the wholeness is better.
In order to form a denser connection network, in the present embodiment, the connection columns 3 adjacent to each other on the left and right are staggered up and down. The staggered connection enables the nets formed by the connection to be more uniformly distributed, thereby realizing better connection effect.
In order to further improve the connection effect, the central rope 41 is a steel wire or a steel wire rope, and the connection rope 42 is a steel wire. Or the central rope 41 is a steel wire or a steel wire rope, and the connecting rope 42 is a carbon fiber rope 4. The connecting cord 42 is preferably a structure of the carbon fiber rope 4 because the adhesion of the carbon fiber rope 4 is larger than that of the steel wire, and the effect is more remarkable.
Experiment: the technical scheme provided by the embodiment and the existing common solid-web H-shaped steel 2 concrete beam are used for analyzing the stress performance.
The technical scheme provided by the embodiment 1 is obtained, compared with the existing common solid H-shaped steel 2 (except the rope 4, other indexes are consistent), the maximum stress is reduced by 41.2%, in the implementation of the bending performance, the section steel 2 concrete beam test piece provided by the embodiment shows better ductility, the limit load value of the test piece beam is reached when the load is increased to 476kN (100% Pu) at the maximum, the maximum crack width exceeds 1.5mm, the section steel 2 and the reinforcing steel bar in the tension area yield, and the concrete in the compression area is crushed. In the conventional solid-web H-section steel 2 concrete beam, the maximum load is increased to 379kN (100 pu) to the limit load value, the concrete in the compression zone is crushed when the test piece is damaged, the lower concrete is peeled off, and the section steel 2 and the steel reinforcement framework are exposed. Through experiments, the overall performance of the section steel 2 concrete beam provided by the embodiment can be proved to be more excellent.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (7)
1. The utility model provides a shaped steel concrete beam, includes the concrete beam body and sets up this internal shaped steel at the concrete beam, the peripheral parcel of shaped steel has the reinforcing bar rack, a serial communication port, be provided with the rope on the lateral wall of shaped steel, the rope includes central rope and the winding and restricts the outlying connection rope at center, wherein, the one end that shaped steel was kept away from to center rope is connected on the reinforcing bar rack, the one end interval that shaped steel was kept away from to the connection rope breaks away from the winding center rope and is the periphery that the form set up at the center rope, rope evenly distributed is on the lateral wall of shaped steel.
2. A steel reinforced concrete beam as claimed in claim 1, wherein the side walls of the section steel are provided with connecting columns, and the ropes are fixed to the side walls of the section steel through the connecting columns.
3. A steel reinforced concrete beam as claimed in claim 2, wherein said connecting column is provided with a plurality of ropes, and said connecting column distributes the ropes uniformly in groups on the side wall of the steel section.
4. A steel reinforced concrete beam as claimed in claim 3, wherein the cords of the connecting columns are divergently connected to the reinforcement cage.
5. A steel reinforced concrete beam as claimed in claim 4, wherein the left and right adjacent connecting columns are staggered up and down.
6. A steel reinforced concrete beam as claimed in claim 5, wherein the central ropes are steel wires or steel wire ropes and the connecting ropes are steel wires.
7. A steel reinforced concrete beam as claimed in claim 6, wherein the central ropes are steel wires or steel wire ropes and the connecting ropes are carbon fibre ropes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211196599.1A CN115419214B (en) | 2022-09-29 | 2022-09-29 | Profile steel concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211196599.1A CN115419214B (en) | 2022-09-29 | 2022-09-29 | Profile steel concrete beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115419214A true CN115419214A (en) | 2022-12-02 |
| CN115419214B CN115419214B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211196599.1A Active CN115419214B (en) | 2022-09-29 | 2022-09-29 | Profile steel concrete beam |
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| CN115419214B (en) | 2024-05-28 |
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