CN109057157B - Concrete column - Google Patents
Concrete column Download PDFInfo
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- CN109057157B CN109057157B CN201810848920.7A CN201810848920A CN109057157B CN 109057157 B CN109057157 B CN 109057157B CN 201810848920 A CN201810848920 A CN 201810848920A CN 109057157 B CN109057157 B CN 109057157B
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- shaped channel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
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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
- E04C3/29—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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Composite Materials (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model provides a concrete column has buried shaped steel reinforcing element along the longitudinal direction of concrete column through the length direction, shaped steel reinforcing element includes: basic section steel and U-shaped channel steel; the basic section steel comprises an upper flange, a lower flange and a web plate, and the U-shaped channel steel is fixed on the corner of the flange of the basic section steel and is arranged along the full length of the basic section steel; and a pore passage for the prestressed tendon to penetrate is formed between the U-shaped channel steel and the flange, and the prestressed tendon is arranged in the pore passage. By adopting the concrete column, the compression bearing capacity and the torsion bearing capacity of the column can be improved simultaneously.
Description
Technical Field
The invention belongs to the field of constructional engineering, and particularly relates to a concrete column.
Background
Application number "2016100206893" a prestressing force assembled frame node structure and construction method thereof disclose: i-shaped steel is pre-embedded at the end part of the precast reinforced concrete beam, a first pore channel is arranged in a flange and/or a web plate of the I-shaped steel, the pore channel is used for embedding the unbonded prestressed reinforcement, and a protrusion extending out of the concrete beam is further arranged on the surface of the I-shaped steel; the precast concrete column is provided with a steel plate on one side opposite to the beam, the steel plate is provided with a second pore passage which passes through the unbonded prestressed tendon and a jack which is matched with the protrusion, the position of the second pore passage corresponds to that of the first pore passage, and the column concrete is also provided with a channel which corresponds to the second pore passage and is used for embedding the unbonded prestressed tendon. The combination of the concrete structure and the steel strand in the above document can improve the flexural bearing capacity of the beam. For the beam, the torsional damage is rarely considered, and generally only torsional reinforcing steel bars need to be arranged. The torsional load enhancement is only considered in the case of a large span structure of a side sill, a side pillar, or a member subject to greater torsional loads. However, the prior art has not provided a technical scheme for improving torsional load bearing capacity in a concrete structure.
Disclosure of Invention
The object of the present invention is to overcome the drawbacks of the prior art and to provide a concrete column with the purpose of torsional load-bearing capacity at the side column.
The technical scheme of the invention is as follows: a concrete beam or column having an improved torsional load bearing capacity, a profiled bar reinforcement being embedded throughout the longitudinal direction of the concrete beam or column, the profiled bar reinforcement comprising: basic section steel and U-shaped channel steel; the basic section steel comprises an upper flange, a lower flange and a web plate, and the U-shaped channel steel is fixed on the corner of the flange of the basic section steel and is arranged along the full length of the basic section steel; and a pore passage for the prestressed tendon to penetrate is formed between the U-shaped channel steel and the flange, and the prestressed tendon is arranged in the pore passage.
Furthermore, U-shaped channel steel is arranged at 4 corners of the upper flange and the lower flange of the basic section steel, and the prestressed tendons are arranged in the prestressed tendon ducts.
Furthermore, the prestressed reinforcing steel adopts prestressed steel strands.
Further, bolt holes are preset between the flanges of the U-shaped channel steel and the basic section steel, the bolt holes of the flanges of the U-shaped channel steel and the basic section steel are aligned, and the U-shaped channel steel and the basic section steel are fixed through the bolt and nut assemblies.
Furthermore, vertical steel pipes are fixed on the left side and the right side of an upper flange and a lower flange of the basic section steel respectively, flanges protrude out of two ends of each vertical steel pipe, the height of each vertical steel pipe is larger than the thickness of each flange, and each vertical steel pipe is hollow; the distance between the vertical steel pipes is 15-50 cm; the side surfaces of the two sides of the upper flange and the lower flange are provided with bulges which are matched with the parts of the vertical steel pipes protruding out of the flanges so as to position the mutual positions of the U-shaped channel steel and the flanges; the upper surface and the lower surface of the U-shaped channel steel are provided with holes corresponding to the vertical steel pipes, and the U-shaped channel steel and the vertical steel pipes are fixed through bolt and nut assemblies.
Further, still include: the upper outer side plate is arranged on the outer sides of the flanges of the 2U-shaped channel steels on the upper flange; the lower outer side plate is arranged on the outer sides of the flanges of the 2U-shaped channel steels of the lower flange; the upper inner side plate and the lower inner side plate are respectively arranged between one end of the inner side of the flange of the U-shaped channel steel of the upper flange and the lower flange and the web plate; left side board and right side board are parallel with the web, and the U type channel steel of basic shaped steel web both sides is connected through left side board and right side board respectively, goes up the outer panel and makes the U type channel steel connection formation "mouth" font at 4 angles with lower outer panel and left side board and right side limit.
A construction method of a concrete beam or column for improving torsional bearing capacity is characterized in that a section steel reinforcing member is embedded in the concrete beam or column, and the construction method comprises the following steps: first, the following components were prepared: the structural steel reinforcing member comprises 4U-shaped channel steels and basic structural steel; the basic section steel consists of an upper flange, a lower flange and a web plate; secondly, installing U-shaped channel steel: respectively inserting 4U-shaped channel steels into four corners of an upper flange and a lower flange of the basic section steel, arranging the U-shaped channel steels along the through length of the basic section steel, fixing the U-shaped channel steels and the basic section steel, and forming a pore passage for penetrating the prestressed tendon between the U-shaped channel steels and the flange; thirdly, after the section steel reinforced member is finished, constructing a reinforcement cage of the beam or the column; fourthly, pouring concrete; fifthly, after the prefabricated beam or the prefabricated column is assembled, the prestressed tendons are penetrated and prestressed.
Further, in the first step, when the component is prepared, vertical steel pipes are respectively welded on the left side and the right side of an upper flange and a lower flange of the basic section steel, the flanges protrude from two ends of each vertical steel pipe, the height of each vertical steel pipe is larger than the thickness of each flange, and each vertical steel pipe is hollow; the distance between the vertical steel pipes is 15-50 cm; secondly, when the U-shaped channel steel is inserted from the front side of the basic section steel, the side faces of the two sides of the U-shaped channel steel, which are inserted into the flange, are provided with bulges, and the U-shaped channel steel is matched with the part of the vertical steel pipe, which protrudes out of the flange, so as to position the mutual positions of the U-shaped channel steel and the flange; the upper surface and the lower surface of the U-shaped channel steel correspond to the vertical steel pipes, and holes are formed in the parts, and the bolt and the nut are fixed through a bolt and nut assembly.
Further, in the second step, in installing U type channel-section steel, still include: installing an upper outer side plate and a lower outer side plate, wherein the upper outer side plate is arranged on the outer sides of the flanges of the 2U-shaped channel steels of the upper flange; the lower outer side plate is arranged on the outer side of the flange of each of the 2U-shaped channel steels on the lower flange.
Further, in the second step, in installing U type channel-section steel, still include: and the upper inner side plate and the lower inner side plate are arranged between one end of the flange inner side of the U-shaped channel steel of the upper flange and the lower flange and the web plate respectively.
Furthermore, the inner side plate and the web plate of the 4 blocks are connected in an inclined strut mode.
Further, in the second step, in installing U type channel-section steel, still include: install left side board and right side board, left side board and right side board are parallel with the web, and the U type channel steel of basis shaped steel web both sides is connected through left side board and right side board respectively, goes up outer panel and left side board and right side limit down and makes the U type channel steel connection at 4 angles form "mouthful" font.
Further, the basic section steel is I-shaped steel, the upper flange and the lower flange are the same in structure, the prestressed tendons are made of prestressed steel strands, and the beam or the column is a side beam or a side column.
By adopting the technical scheme, compared with the prior art, the invention has the beneficial effects that: 1. compared with the 2016100206893 scheme, the flange of the basic steel section in the concrete beam/column is formed by a combined method: the foundation steel and the channel steel are formed in a mode of facilitating installation of the prestressed tendons; 2. compared with the proposal of 2016100206893, the prestressed tendons are arranged at the 4-angle of the section steel, and the torsion-resistant bearing capacity can be improved while the bending-resistant/pressure-resistant bearing capacity is improved by changing the arrangement positions of the prestressed tendons; 3. according to the method, when the beam and the column are twisted, the length of the prestressed tendon is stretched, and when the prestressed tendon is stretched, additionally generated tension enables the prestressed tendon to radially exert force on the channel steel, and the channel steel is connected with the flange of the basic section steel, so that the twisting of the beam/column is inhibited; 4, the combined flange adopts a mode that the basic section steel is externally connected with the bolt steel pipe, so that the positioning connection between the channel steel and the flange is convenient, and the stability of the channel steel and the flange is ensured; 5. in addition, the torsional failure of the beam column is represented in space as a failure mainly based on the main tensile stress, and compared with a torsional reinforcing steel bar, the high-strength prestressed steel strand can bear larger tensile stress.
Description of the drawings:
FIG. 1: the structural design diagram of the first embodiment.
FIG. 2: the bolt and nut assembly and the U-shaped channel steel of the first embodiment are installed in detail.
FIG. 3: installation schematic diagram of the section steel reinforcing member of the third embodiment.
FIG. 4: installation schematic diagram of the section steel reinforcing member of the fourth embodiment.
FIG. 5: and (3) a schematic diagram of the deformation of the steel strand when the steel strand is twisted.
FIG. 6: the stress schematic diagram of the steel strand and the basic section steel in the application.
Detailed Description
Example 1: as shown in fig. 1-2, a precast concrete beam or column in which a section steel reinforcing member is embedded, and a method for manufacturing the same, includes:
first, a member is prepared: the structural steel reinforcing member comprises basic structural steel and 4U-shaped channel steels 1-1, 1-2, 1-3 and 1-4; the basic section steel is I-shaped steel and consists of an upper flange 2-1, a lower flange 2-2 and a web plate 3, and the upper flange 2-1 and the lower flange 2-2 have the same structure;
secondly, inserting 4U-shaped channel steels into four corners of an upper flange and a lower flange of the basic section steel, presetting bolt holes between the U-shaped channel steel and the flange of the basic section steel, aligning the U-shaped channel steel with the bolt holes of the flange of the basic section steel, and fixing the U-shaped channel steel and the flange of the basic section steel through bolt and nut assemblies 1-5; a pore passage 4 for penetrating the prestressed tendon is formed between the U-shaped channel steel and the flange;
thirdly, after the section steel reinforced member is finished, constructing a reinforcement cage of the beam or the column;
and fourthly, pouring concrete of the beam or the column.
Fifthly, a prestressed tendon passes through a hole channel at the 4 corners of the basic steel and is applied with prestress; the prestressed reinforcement adopts prestressed steel strands, namely, the prestressed reinforcement adopts post-tensioning construction.
Example 2, the difference from example 1 is that: the basic section steel is II-shaped steel.
Example 3: as shown in fig. 3, a precast concrete beam or column in which basic section steel is buried is constructed by the following steps:
first, a member is prepared: the section steel reinforcing member comprises basic section steel and 4U-shaped channel steels 1-1, 1-2, 1-3 and 1-4; the basic section steel is I-shaped steel and consists of an upper flange 2-1, a lower flange 2-2 and a web plate 3, and the upper flange 2-1 and the lower flange 2-2 have the same structure; welding vertical steel pipes 1-7 on the left side and the right side of an upper flange and a lower flange of the basic section steel respectively, wherein the flanges protrude from two ends of each vertical steel pipe, the height of each vertical steel pipe is larger than the thickness of each flange, and each vertical steel pipe is hollow; the distance between the vertical steel pipes is 15-50 cm;
secondly, inserting 4U-shaped channel steels into four corners of an upper flange and a lower flange of the basic section steel, presetting bolt holes between the U-shaped channel steel and the flange of the basic section steel, aligning the U-shaped channel steel with the bolt holes of the flange of the basic section steel, and fixing the U-shaped channel steel and the flange of the basic section steel through bolt and nut assemblies 1-6; a pore passage 4 for penetrating the prestressed tendon is formed between the U-shaped channel steel and the flange;
the U-shaped channel steel is inserted from the front of the basic section steel, the side surfaces of two sides of the flange inserted into the U-shaped channel steel are provided with bulges, and the U-shaped channel steel is matched with the part of the vertical steel pipe protruding out of the flange so as to position the mutual positions of the U-shaped channel steel and the flange; the parts of the upper surface and the lower surface of the U-shaped channel steel, which correspond to the vertical steel pipes, are provided with holes, and the U-shaped channel steel and the vertical steel pipes are fixed through bolt and nut assemblies;
welding an upper outer side plate 2-1-2, an upper inner side plate 2-1-3 and a lower outer side plate 2-1-3, wherein the upper outer side plate is arranged on the outer sides of the flanges of 2U-shaped channel steels on the upper flange; the lower outer side plate is arranged on the outer sides of the flanges of the 2U-shaped channel steels of the lower flange; the upper inner side plate and the lower inner side plate are respectively arranged between one end of the flange inner side of the U-shaped channel steel of the upper flange and the lower flange and the web plate.
Thirdly, after the section steel reinforced member is finished, constructing a reinforcement cage of the beam or the column;
and fourthly, pouring concrete of the beam or the column.
Fifthly, a prestressed tendon passes through a hole channel at the 4 corners of the basic steel and is applied with prestress; the prestressed reinforcement adopts prestressed steel strands, namely, the prestressed reinforcement adopts post-tensioning construction.
Example 4: the difference from example 3 is that: the U-shaped channel steel is connected with the left side plate and the right side plate 2-1-4 which are parallel to the web plate; the U-shaped channel steel with 4 corners is connected to form a square shape, and the torsion resistance bearing capacity of the beam/column is further improved.
Example 5: the difference from example 3 is that: the upper inner side plate and the lower inner side plate are connected with the web plate in an inclined strut mode, the inner side plates of the 4 blocks are all connected with the web plate through inclined struts, integrity of U-shaped channel steel and basic section steel can be facilitated, and improvement of anti-torsion bearing capacity is facilitated.
Firstly, the U-shaped channel steel, the upper outer side plate, the lower outer side plate, the left side plate and the right side plate form a square shape, the square shape can improve the anti-torsion bearing capacity, the design is easy to understand from the mechanics, namely, an anti-torsion member is additionally arranged on the I-shaped steel, and the U-shaped channel steel is arranged on the four corners of the basic section steel, the anti-torsion deformation is maximum, so that the anti-torsion bearing capacity can be improved to the maximum extent by arranging the square shape; secondly, for the prestressed steel strands, if the prestressed steel strands are not longitudinally arranged in the U-shaped channel steel, the effect is that the lengths of the steel strands are only elongated, and the steel strands are straight lines; however, when the prestressed steel strand is arranged in the U-shaped channel, under the action of torque, the steel strand twists along with the U-shaped channel, unlike the case of not arranging the U-shaped channel, the steel strand at this time is a curve, and when the prestressed steel strand is subjected to a radial acting force, the steel strand becomes a curve, and the deformation degree of the steel strand is related to the magnitude of the radial force. As shown in FIG. 6, the above-mentioned radial force acts on the basic section steels F1, F2, F3, F4, and the torsional load-bearing capacity is improved.
While the preferred embodiments of the present invention have been described in detail, it should be understood that various changes and modifications of the invention may be effected therein by those skilled in the art after reading the foregoing teachings. Such equivalents are intended to fall within the scope of the claims appended hereto.
Claims (6)
1. The utility model provides a concrete column, has buried shaped steel reinforcing member along the longitudinal direction of concrete column leads to the length direction underground, its characterized in that:
the section steel reinforcing member includes: basic section steel and U-shaped channel steel; the basic section steel comprises an upper flange, a lower flange and a web plate, and the U-shaped channel steel is fixed on the corner of the flange of the basic section steel and is arranged along the full length of the basic section steel; a pore passage for the prestressed tendon to penetrate is formed between the U-shaped channel steel and the flange, and the prestressed tendon is arranged in the pore passage;
further comprising: the upper outer side plate is arranged on the outer sides of the flanges of the 2U-shaped channel steels on the upper flange; the lower outer side plate is arranged on the outer sides of the flanges of the 2U-shaped channel steels of the lower flange;
the upper inner side plate and the lower inner side plate are respectively arranged between one end of the inner side of the flange of the U-shaped channel steel of the upper flange and the lower flange and the web plate;
the left side plate and the right side plate are parallel to the web, U-shaped channel steels on two sides of the web of the basic section steel are respectively connected through the left side plate and the right side plate, and the upper outer side plate, the lower outer side plate, the left side plate and the right side plate enable the U-shaped channel steels with 4 corners to be connected to form a square shape;
the torsional load bearing capacity can be improved.
2. The concrete column according to claim 1, wherein the 4 inner side plates and the web plate are connected by means of inclined struts.
3. The concrete column according to claim 1, wherein bolt holes are preset between the U-shaped channel steel and the flange of the basic section steel, and the U-shaped channel steel is aligned with the bolt holes of the flange of the basic section steel and fixed through a bolt and nut assembly.
4. The concrete column according to claim 1, wherein vertical steel pipes are fixed to the left and right sides of the upper flange and the lower flange of the basic section steel respectively, the two ends of each vertical steel pipe protrude out of the flanges, the height of each vertical steel pipe is larger than the thickness of each flange, and each vertical steel pipe is hollow.
5. A concrete column according to claim 4, characterised in that the spacing of the vertical steel tubes is 15-50 cm.
6. A concrete column according to claim 4, wherein the upper and lower flanges have projections on opposite sides thereof for cooperating with the portions of the vertical steel tubes projecting from the flanges to locate the U-channel steel relative to the flanges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810848920.7A CN109057157B (en) | 2017-01-03 | 2017-01-03 | Concrete column |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810848920.7A CN109057157B (en) | 2017-01-03 | 2017-01-03 | Concrete column |
| CN201710002695.0A CN106760204B (en) | 2017-01-03 | 2017-01-03 | A kind of beams of concrete improving Torsion bearing capacity |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710002695.0A Division CN106760204B (en) | 2017-01-03 | 2017-01-03 | A kind of beams of concrete improving Torsion bearing capacity |
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| Publication Number | Publication Date |
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| CN109057157A CN109057157A (en) | 2018-12-21 |
| CN109057157B true CN109057157B (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810848908.6A Active CN109057155B (en) | 2017-01-03 | 2017-01-03 | Concrete beam capable of improving torsion-resistant bearing capacity |
| CN201810848913.7A Active CN109057156B (en) | 2017-01-03 | 2017-01-03 | Construction method of concrete column for improving torsion-resistant bearing capacity |
| CN201810848914.1A Active CN108972871B (en) | 2017-01-03 | 2017-01-03 | Construction method of concrete beam for improving torsion-resistant bearing capacity |
| CN201710002695.0A Active CN106760204B (en) | 2017-01-03 | 2017-01-03 | A kind of beams of concrete improving Torsion bearing capacity |
| CN201810848920.7A Active CN109057157B (en) | 2017-01-03 | 2017-01-03 | Concrete column |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810848908.6A Active CN109057155B (en) | 2017-01-03 | 2017-01-03 | Concrete beam capable of improving torsion-resistant bearing capacity |
| CN201810848913.7A Active CN109057156B (en) | 2017-01-03 | 2017-01-03 | Construction method of concrete column for improving torsion-resistant bearing capacity |
| CN201810848914.1A Active CN108972871B (en) | 2017-01-03 | 2017-01-03 | Construction method of concrete beam for improving torsion-resistant bearing capacity |
| CN201710002695.0A Active CN106760204B (en) | 2017-01-03 | 2017-01-03 | A kind of beams of concrete improving Torsion bearing capacity |
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| CN112554561B (en) * | 2020-11-30 | 2022-05-17 | 同济大学建筑设计研究院(集团)有限公司 | Beam upturning node structure with good crack resistance and construction method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108972871B (en) | 2019-12-10 |
| CN106760204A (en) | 2017-05-31 |
| CN109057155A (en) | 2018-12-21 |
| CN109057157A (en) | 2018-12-21 |
| CN109057156A (en) | 2018-12-21 |
| CN108972871A (en) | 2018-12-11 |
| CN106760204B (en) | 2018-12-21 |
| CN109057155B (en) | 2020-08-07 |
| CN109057156B (en) | 2020-08-14 |
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