CN110241973B - Steel-wood-concrete composite beam and construction method thereof - Google Patents
Steel-wood-concrete composite beam and construction method thereof Download PDFInfo
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- CN110241973B CN110241973B CN201910652492.5A CN201910652492A CN110241973B CN 110241973 B CN110241973 B CN 110241973B CN 201910652492 A CN201910652492 A CN 201910652492A CN 110241973 B CN110241973 B CN 110241973B
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- wood
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- beams
- steel beam
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- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 239000004567 concrete Substances 0.000 title claims abstract description 34
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 239000002023 wood Substances 0.000 claims abstract description 76
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 75
- 239000010959 steel Substances 0.000 claims abstract description 75
- 239000011150 reinforced concrete Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010008 shearing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000002301 combined effect Effects 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004578 natural building material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002787 reinforcement 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
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/292—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 wood and metal
Abstract
The invention relates to a steel-wood-concrete composite beam and a construction method thereof. The steel-wood-concrete composite beam utilizes steel, wood and concrete to form the composite beam, the concrete is mainly pressed under the load, wood and steel are mainly pulled, and the mechanical characteristics of high compressive strength of the concrete and high tensile strength of the wood and the steel can be fully exerted; the cross-section rigidity and bearing capacity of the beam can be effectively improved, the deflection is reduced, the risks of local buckling and integral instability are reduced, and meanwhile, the fire resistance of the steel beam is improved.
Description
Technical Field
The invention relates to a steel-wood-concrete composite beam and a construction method thereof.
Background
The traditional reinforced concrete construction consumes a great deal of resources, and causes serious pollution and damage to the environment and ecology, so under the background of the current ecological civilization construction and sustainable development, the country has continuously arrived at a series of policy guidelines for promoting the healthy development of green buildings, wherein the advocated development of wood-structure buildings in conditional areas is clearly pointed out. The wood is taken as the only renewable natural building material, can absorb a large amount of carbon dioxide in the growth process, plays a role of carbon fixation, reduces the greenhouse effect, only generates a small amount of carbon dioxide in the processing process, has little environmental pollution, has good heat preservation and heat insulation performance, and can achieve the effect of energy conservation when applied to buildings.
However, wood has obvious anisotropic characteristics, the difference of mechanical properties in all directions is large, the compressive strength is much lower than the tensile strength, the elastic modulus of the wood is low, and the bending resistance bearing capacity of the wood is relatively low, so that the building height and the number of layers of the wood structure are strictly limited at present. In order to break through the application limitations of wood structures, wood is generally combined with other materials to form composite structures, such as wood-concrete composite beams and steel-wood composite beams. However, when the span of the wood-concrete composite beam is large, the section of the composite beam is relatively high in order to ensure that the deflection cannot be excessively large in a normal use limit state, so that the utilization rate of the whole space is reduced; most of steel materials in the steel-wood composite beam are thin-walled steel, the steel materials are thin and flexible, the bearing capacity of the composite beam is improved only limited, and the effect of a floor slab is not considered in the existing steel-wood composite beam, so that the steel-wood composite beam does not meet engineering practice.
Disclosure of Invention
In view of the above, the invention aims to provide a steel-wood-concrete composite beam and a construction method thereof, which can effectively improve the section rigidity and bearing capacity of the beam and reduce the risks of local buckling and overall instability.
The invention is realized by adopting the following scheme: the steel-wood-concrete composite beam comprises a reinforced concrete slab and H-shaped steel beams positioned on the lower side of the reinforced concrete slab, wherein wood beams are arranged in U-shaped grooves on two sides of the H-shaped steel beams.
Further, the upper side of the H-shaped steel beam is fixedly connected with pegs which are arranged along the length direction of the H-shaped steel beam and are embedded into the reinforced concrete slab.
Furthermore, the upper flange and the lower flange of the H-shaped steel beam are respectively provided with screws which are arranged along the length direction of the H-shaped steel beam and are drilled into the wood beam.
Further, the steel beam structure further comprises double-headed screws penetrating through webs of the H-shaped steel beam and wood beams on two sides, and nuts are screwed at two ends of the double-headed screws.
The invention adopts another technical scheme that: the construction method of the steel-wood-concrete composite beam comprises the following steps: (1) Machining an H-shaped steel beam and a wood beam in a factory, arranging screw holes at two sides of an upper flange and a lower flange of the H-shaped steel beam at a certain interval, arranging screw holes at the middle part of a web plate at a certain interval, and then welding studs at the middle part of the upper flange of the H-shaped steel beam at a certain interval; simultaneously, a bolt hole corresponding to the bolt hole on the H-shaped steel beam web plate is formed in the wood beam; (2) Embedding the wood beams into U-shaped grooves at two sides of the H-shaped steel beam web, and aligning bolt holes on the wood beams with the bolt holes of the H-shaped steel beam web; (3) The stud bolts penetrate through bolt holes in the webs of the wood beam and the H-shaped steel beam and then are locked by nuts, and then screws penetrate through screw holes in the upper flange and the lower flange of the H-shaped steel beam 1 and are drilled into the wood beam, so that the H-shaped steel beam and the wood beam are tightly connected to form a steel-wood composite beam; (4) And (3) conveying the manufactured steel-wood composite beam to a construction site and installing, paving a reinforcing mesh on the steel-wood composite beam, pouring concrete to form a reinforced concrete slab, and forming the steel-wood-concrete composite beam through the bolts and the steel-wood composite beam after the reinforced concrete slab is hardened.
Compared with the prior art, the invention has the following beneficial effects: the steel-wood-concrete composite beam utilizes steel, wood and concrete to form the composite beam, the concrete is mainly pressed under the load, wood and steel are mainly pulled, and the mechanical characteristics of high compressive strength of the concrete and high tensile strength of the wood and the steel can be fully exerted; the mechanical characteristics of the three materials can be fully developed, the section rigidity and bearing capacity of the beam are effectively improved, the deflection is reduced, the risks of local buckling and integral instability are reduced, and meanwhile, the fire resistance of the steel beam is improved.
The present invention will be further described in detail below with reference to specific embodiments and associated drawings for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of the present invention;
FIG. 2 is a side view of an embodiment of the present invention;
FIG. 3 is a side view of an H-beam in accordance with an embodiment of the present invention;
FIG. 4 is a side view of a wood beam in an embodiment of the invention;
the reference numerals in the figures illustrate: 1-H-shaped steel beam, 11-bolt holes, 12-bolt holes, 2-wood beams, 3-reinforced concrete plates, 31-steel reinforcement meshes, 32-concrete, 4-double-headed screws, 5-gaskets, 6-screws and 7-bolts.
Detailed Description
As shown in fig. 1-4, the steel-wood-concrete composite beam comprises a reinforced concrete slab 3 and an H-shaped steel beam 1 positioned at the lower side of the reinforced concrete slab 3, wherein wood beams 2 are arranged in U-shaped grooves at two sides of the H-shaped steel beam 1, and the composite beam is formed by steel, wood and concrete, so that the respective mechanical characteristics of three materials can be fully utilized, the section rigidity and bearing capacity of the beam are effectively improved, the risks of local buckling and integral instability are reduced, and the fire resistance of the steel beam is improved; under the action of load, the concrete is mainly pressed, the wood and the steel are mainly pulled, and the mechanical characteristics of high compressive strength and high tensile strength of the wood and the steel can be fully exerted; the wood beam can effectively improve the section rigidity of the steel-concrete composite beam and reduce the deflection; the wood can replace stiffening ribs to improve the stability of the H-shaped steel beam, and reduce the risks of local buckling and overall instability; in addition, the wood beams are tightly attached to two sides of the web plate of the H-shaped steel beam, so that the direct fire receiving area of the steel beams can be reduced, a carbonization layer can be formed on the surface of the wood after the wood is subjected to fire, the inner steel beam web plate is protected, and the fire resistance of the composite beam is effectively improved.
In this embodiment, the upper side of the H-shaped steel beam 1 is fixedly connected with a peg 7 which is arranged along the length direction thereof and is embedded in the reinforced concrete slab, the peg 7 is welded on the upper flange of the H-shaped steel beam 1, and the peg 7 is used as a shear member connected with the reinforced concrete slab 3.
In this embodiment, the upper flange and the lower flange of the H-shaped steel beam 1 are respectively provided with screw holes for inserting screws, which are arranged along the length direction of the upper flange and the lower flange of the H-shaped steel beam and screwed into the wood beam 6,H.
In this embodiment, still include the double-end screw rod 4 that passes the web of H shaped steel roof beam 1 and both sides wood beam, the nut has been screwed at the both ends of double-end screw rod 4, has seted up the bolt hole that is used for wearing to establish double-end screw rod on the web of wood beam and H shaped steel roof beam.
The combined effect of the reinforced concrete slab, the H-shaped steel beam and the wood beam is realized by taking the double-headed screw rod, the screw and the stud as the shearing-resistant connecting piece, so that the combined effect among the reinforced concrete slab, the H-shaped steel beam and the wood beam is ensured, the respective mechanical characteristics of three materials are expected to be exerted, the advantages are complementary, the three materials are required to be taken out respectively, the three materials have the integrity, the respective mechanical characteristics of the three materials can be exerted, and the effect of fully utilizing the material performance is achieved; the components can be prefabricated in a factory, the manufactured steel-wood composite beam is transported to a construction site and is installed at a corresponding position, then a reinforcing mesh is paved, concrete is poured, and after the reinforcing concrete is hardened, the combined effect of the reinforced concrete slab and the steel-wood composite beam can be realized through bolts, so that the steel-wood-concrete T-shaped composite beam is formed.
The construction method of the steel-wood-concrete composite beam comprises the following steps: (1) Machining an H-shaped steel beam and a wood beam in a factory, forming screw holes 12 at two sides of an upper flange and a lower flange of the H-shaped steel beam 1 at a certain interval, forming screw holes 11 at the middle part of a web plate at a certain interval, and then welding studs 7 at a certain interval in the middle of the upper flange of the H-shaped steel beam; simultaneously, a bolt hole 11 corresponding to the bolt hole on the web plate of the H-shaped steel beam 1 is formed on the wood beam 2; (2) Embedding the wood beam 2 into U-shaped grooves at two sides of the web plate of the H-shaped steel beam 1, wherein bolt holes on the wood beam 2 are aligned with the bolt holes of the web plate of the H-shaped steel beam 1; (3) The stud bolts 4 penetrate through bolt holes 11 on the webs of the wood beam and the H-shaped steel beam and are locked by nuts at the rear two ends, and then the screws 6 penetrate through screw holes on the upper flange and the lower flange of the H-shaped steel beam 1 and are drilled into the wood beam 2, so that the H-shaped steel beam 1 and the wood beam 2 are tightly connected to form a steel-wood composite beam; (4) The manufactured steel-wood composite beam is transported to a construction site and installed, then a reinforcing mesh 31 is paved on the steel-wood composite beam, concrete 32 is poured to form a reinforced concrete slab 3, after the reinforced concrete slab 3 is hardened, the composite effect with the steel-wood composite beam can be realized through the studs 7, and the steel-wood composite beam is combined with the steel-wood composite beam to form the steel-wood-concrete composite beam.
Any of the above-described embodiments of the present invention disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
If the invention discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (2)
1. A steel-wood-concrete composite beam, characterized by: the steel beam comprises a reinforced concrete slab and H-shaped steel beams connected to the lower side of the reinforced concrete slab, wherein wood beams are arranged in U-shaped grooves on two sides of the H-shaped steel beams; the upper side of the H-shaped steel beam is fixedly connected with a bolt which is arranged along the length direction of the H-shaped steel beam and is embedded into the reinforced concrete slab, the bolt is welded on the upper flange of the H-shaped steel beam, the bolt is used as a shearing resistant member connected with the reinforced concrete slab, and the upper flange and the lower flange of the H-shaped steel beam are provided with screw holes for penetrating screws; the upper flange and the lower flange of the H-shaped steel beam are respectively provided with screws which are arranged along the length direction and are drilled into the wood beam; the double-end screw rod penetrates through the web plate of the H-shaped steel beam and the wood beams on two sides, and nuts are screwed at two ends of the double-end screw rod.
2. A method of constructing a steel-wood-concrete composite beam according to claim 1, wherein: the method comprises the following steps: (1) Machining an H-shaped steel beam and a wood beam in a factory, arranging screw holes at two sides of an upper flange and a lower flange of the H-shaped steel beam at a certain interval, arranging screw holes at the middle part of a web plate at a certain interval, and then welding studs at the middle part of the upper flange of the H-shaped steel beam at a certain interval; simultaneously, a bolt hole corresponding to the bolt hole on the H-shaped steel beam web plate is formed in the wood beam; (2) Embedding the wood beams into U-shaped grooves at two sides of the H-shaped steel beam web, and aligning bolt holes on the wood beams with the bolt holes of the H-shaped steel beam web; (3) The double-headed bolts penetrate through bolt holes in the webs of the wood beams and the H-shaped steel beams and then are locked by nuts, and then screws penetrate through screw holes in the upper flanges and the lower flanges of the H-shaped steel beams and are drilled into the wood beams, so that the H-shaped steel beams and the wood beams are tightly connected to form steel-wood composite beams; (4) And (3) conveying the manufactured steel-wood composite beam to a construction site and installing, paving a reinforcing mesh on the steel-wood composite beam, pouring concrete to form a reinforced concrete slab, and forming the steel-wood-concrete composite beam through the bolts and the steel-wood composite beam after the reinforced concrete slab is hardened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652492.5A CN110241973B (en) | 2019-07-19 | 2019-07-19 | Steel-wood-concrete composite beam and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652492.5A CN110241973B (en) | 2019-07-19 | 2019-07-19 | Steel-wood-concrete composite beam and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110241973A CN110241973A (en) | 2019-09-17 |
| CN110241973B true CN110241973B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910652492.5A Active CN110241973B (en) | 2019-07-19 | 2019-07-19 | Steel-wood-concrete composite beam and construction method thereof |
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| Country | Link |
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| CN (1) | CN110241973B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648526A (en) * | 2020-03-10 | 2020-09-11 | 天津大学 | Cold-formed thin-wall steel laminated wood combined member |
| CN113374172A (en) * | 2021-06-10 | 2021-09-10 | 黄冀卓 | Inverted T-shaped steel-wood-concrete combined beam and construction method thereof |
| CN113404214B (en) * | 2021-07-08 | 2023-06-23 | 西京学院 | Steel-mixed-wood composite beam |
| CN113404215A (en) * | 2021-07-13 | 2021-09-17 | 西京学院 | Assembled steel-wood composite beam |
| CN113738003B (en) * | 2021-09-16 | 2022-06-17 | 福州大学 | Easy-to-disassemble and assemble stainless steel-wood-lightweight concrete combined beam-slab system and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845871A (en) * | 2010-06-30 | 2010-09-29 | 哈尔滨工业大学 | Cast-in-place steel-concrete composite beam |
| CN104652702A (en) * | 2015-02-13 | 2015-05-27 | 南京工业大学 | Connecting device for strengthening wood-concrete composite beam |
| JP6019259B1 (en) * | 2016-02-29 | 2016-11-02 | 幹夫 田代 | Steel-built-in wood column-beam joint structure |
| CN108824698A (en) * | 2018-07-18 | 2018-11-16 | 西南科技大学 | A kind of production method of built-in thin wall H shaped steel clark beam |
| CN210737907U (en) * | 2019-07-19 | 2020-06-12 | 福州大学 | Steel-wood-concrete composite beam |
-
2019
- 2019-07-19 CN CN201910652492.5A patent/CN110241973B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845871A (en) * | 2010-06-30 | 2010-09-29 | 哈尔滨工业大学 | Cast-in-place steel-concrete composite beam |
| CN104652702A (en) * | 2015-02-13 | 2015-05-27 | 南京工业大学 | Connecting device for strengthening wood-concrete composite beam |
| JP6019259B1 (en) * | 2016-02-29 | 2016-11-02 | 幹夫 田代 | Steel-built-in wood column-beam joint structure |
| CN108824698A (en) * | 2018-07-18 | 2018-11-16 | 西南科技大学 | A kind of production method of built-in thin wall H shaped steel clark beam |
| CN210737907U (en) * | 2019-07-19 | 2020-06-12 | 福州大学 | Steel-wood-concrete composite beam |
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| CN110241973A (en) | 2019-09-17 |
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