CN113374172A - Inverted T-shaped steel-wood-concrete combined beam and construction method thereof - Google Patents
Inverted T-shaped steel-wood-concrete combined beam and construction method thereof Download PDFInfo
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- CN113374172A CN113374172A CN202110649373.1A CN202110649373A CN113374172A CN 113374172 A CN113374172 A CN 113374172A CN 202110649373 A CN202110649373 A CN 202110649373A CN 113374172 A CN113374172 A CN 113374172A
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- 239000004567 concrete Substances 0.000 title claims abstract description 31
- 238000010276 construction Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 103
- 239000010959 steel Substances 0.000 claims abstract description 103
- 239000002023 wood Substances 0.000 claims abstract description 81
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 239000002131 composite material Substances 0.000 claims description 28
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 22
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- 239000000463 material Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/943—Building elements specially adapted therefor elongated
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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Abstract
The invention discloses an inverted T-shaped steel-wood-concrete combined beam and a construction method thereof. When the inverted T-shaped steel-wood-concrete combined beam bears load, the inverted T-shaped steel beam and the wood beam bear tension, and the pressure is mainly borne by the reinforced concrete slab, so that the advantages of high tensile strength of the wood beam and the inverted T-shaped steel beam and high compressive strength of the reinforced concrete slab can be fully exerted; the integrity is good, the bearing capacity of the combined beam can be greatly improved, and the deflection is reduced; the structure is simple and the assembly is easy; the existence of the wood beam reduces the direct fire area of the inverted T-shaped steel beam in a fire disaster, and greatly improves the fire resistance.
Description
Technical Field
The invention relates to the field of composite beam structures, in particular to an inverted T-shaped steel-wood-concrete composite beam and a construction method thereof.
Background
As a traditional building, the reinforced concrete building needs to consume a large amount of resources, and the ecological environment is seriously damaged. Under the background of the national advocation of ecological civilization construction and sustainable development, a series of policy guidelines for accelerating the rapid development of green buildings are continuously proposed, wherein the development of wood structures is strongly promoted in all regions by clear requirements. The wood is used as a natural renewable material, is easy to obtain materials, is environment-friendly and has no pollution. In addition to the ability of wood to absorb large amounts of carbon dioxide during growth, wood also produces only small amounts of carbon dioxide during the forming process.
Although wood has a high tensile strength, its compressive strength is relatively low, and its elastic modulus is low, and its bending resistance is not ideal enough, so that there is a strict limit to the height of the wood structure building. In order to fully utilize the advantages of the wood structure, the wood structure is usually used as a combined structure together with other materials, but the effect of the existing combined beam is not satisfactory no matter the steel-wood combined beam or the wood-concrete combined beam.
Disclosure of Invention
In view of the above, the present invention provides an inverted T-shaped steel-wood-concrete composite beam and a construction method thereof, which can greatly improve the bearing capacity and rigidity of the beam, and reduce the possibility of occurrence of integral and local buckling.
One of the purposes of the invention is realized by the following technical scheme: the top of a web plate of the inverted T-shaped steel beam is fixedly embedded into the reinforced concrete slab, two sides of the inverted T-shaped steel beam and the bottom side of the reinforced concrete slab respectively form a groove in a surrounding mode, and the groove is fixedly filled with the wood beam.
As a further preferred scheme, the web plate of the inverted T-shaped steel beam and the wood beam are fixedly connected through a plurality of first fasteners.
As a further preferable scheme, the first fastening member includes a through bolt and a nut, a plurality of first through bolt holes for the through bolt to pass through are uniformly formed in the middle of the web plate of the inverted T-shaped steel beam along the length direction of the web plate, a plurality of second through bolt holes corresponding to the first through bolt holes one to one are uniformly formed in the wood beam along the length direction of the wood beam, and two ends of the through bolt after passing through the corresponding first through bolt hole and the corresponding second through bolt hole are respectively locked and fixed by the nut.
As a further preferable scheme, the first fastener further comprises a washer, and the washer is sleeved on the through bolt and located between the nut and the corresponding wood beam.
Preferably, the wing plate of the inverted T-shaped steel beam is fixedly connected with the wood beam through a plurality of second fasteners.
As a further preferable scheme, the second fastening member includes a screw, a plurality of screw holes are symmetrically formed at both side edge portions of the wing plate of the inverted T-shaped steel beam and are distributed at equal intervals along the length direction of the inverted T-shaped steel beam, and a rod portion of the screw penetrates through the screw holes and then is drilled into the bottom of the corresponding wood beam.
As a further preferred scheme, the top of the web plate of the inverted-T-shaped steel beam is fixedly connected with steel bars in a reinforced concrete slab.
As a further preferable scheme, the reinforced concrete slab comprises an upper layer of reinforcing mesh and a lower layer of reinforcing mesh, the upper layer of reinforcing mesh and the lower layer of reinforcing mesh both comprise a plurality of floor transverse reinforcing bars and a plurality of floor longitudinal reinforcing bars which are arranged in a staggered mode, horizontal connecting plates extending along the whole length direction of the inverted-T-shaped steel beam are symmetrically welded on two sides of the top of a web plate of the inverted-T-shaped steel beam, and the horizontal connecting plates are welded and fixed with the lower layer of reinforcing mesh.
As a further preferable scheme, a plurality of penetrating steel bar holes are uniformly formed in the top of the web plate of the inverted T-shaped steel beam along the length direction of the web plate, penetrating steel bars symmetrically penetrate through the penetrating steel bar holes, and the penetrating steel bars are integrally poured in the reinforced concrete slab and are located between the upper layer steel bar mesh and the lower layer steel bar mesh.
The other purpose of the invention is realized by the following technical scheme: a construction method of an inverted T-shaped steel-wood-concrete composite beam comprises the following steps:
respectively processing an inverted T-shaped steel beam and a wood beam in a factory; the method comprises the following steps that a plurality of screw holes which are distributed at equal intervals along the length direction of the screw holes are symmetrically formed in the edge portions of two sides of a wing plate of an inverted T-shaped steel beam, a plurality of first pair of bolt holes are uniformly formed in the middle of a web plate of the inverted T-shaped steel beam along the length direction of the web plate, a plurality of through reinforcement holes are uniformly formed in the top of the web plate of the inverted T-shaped steel beam along the length direction of the web plate, horizontal connecting plates which extend along the length direction of the web plate are symmetrically welded on two sides of the top of the web plate of the inverted T-shaped steel beam, and the horizontal connecting plates are located below the through reinforcement holes; a plurality of second pairs of through bolt holes which are in one-to-one correspondence with the first pairs of through bolt holes are uniformly formed in the wood beam along the length direction of the wood beam;
in a factory, two wood beams are respectively embedded into grooves on two sides of a web plate of the inverted T-shaped steel beam, so that a first pair of through bolt holes in the web plate of the inverted T-shaped steel beam are aligned with a second pair of through bolt holes in the wood beams;
in a factory, firstly, penetrating a through bolt through a first through bolt hole on a web plate of the inverted T-shaped steel beam and a second through bolt hole on the wood beam, locking two ends of the through bolt through a nut and a washer, and then aligning a screw to a screw hole on a wing plate of the inverted T-shaped steel beam to drill into the bottom of the corresponding wood beam to form the inverted T-shaped steel-wood combined beam;
the method comprises the following steps of conveying an inverted T-shaped steel-wood composite beam assembled in a factory to a construction site, fixing the inverted T-shaped steel-wood composite beam at a preset position, firstly erecting a template on the top of the inverted T-shaped steel-wood composite beam, then laying a lower layer of reinforcing mesh in the template, spot-welding floor transverse reinforcing steel bars in the lower layer of reinforcing mesh on a horizontal connecting plate, symmetrically penetrating through reinforcing steel bars into through reinforcing steel bar holes in the top of a web plate of the inverted T-shaped steel beam, then laying an upper layer of reinforcing mesh in the template, and finally pouring concrete in the template to form the reinforced concrete slab; and (4) removing the template after the reinforced concrete slab is hardened to obtain the inverted T-shaped steel-wood-concrete composite beam.
Compared with the prior art, the invention has the following beneficial effects: the inverted T-shaped steel-wood-concrete combined beam consists of reinforced concrete (namely a reinforced concrete slab), steel (namely an inverted T-shaped steel beam) and wood (namely a wood beam), and when bearing load, the steel and the wood mainly bear tensile force, while pressure is mainly borne by the reinforced concrete. The inverted T-shaped steel-wood-concrete combined beam can fully exert the advantages of high tensile strength of wood and steel and high compressive strength of concrete; the integrity is good, the bearing capacity of the beam can be greatly improved, and the deflection is reduced; the structure is simple and the assembly is easy; the existence of the wood beam reduces the direct fire area of the inverted T-shaped steel beam in a fire disaster, and greatly improves the fire resistance.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
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 inverted T-beam in an embodiment of the invention.
Fig. 4 is a side view of a wood beam in an embodiment of the invention.
Reference numerals: 1-inverted T-shaped steel beam, 2-wood beam, 3-reinforced concrete slab, 4-penetrating bolt, 5-gasket, 6-screw, 7-horizontal connecting plate, 8-penetrating steel bar, 9-transverse floor steel bar, 10-screw hole, 11-penetrating steel bar hole, 12-first penetrating bolt hole, 13-longitudinal floor steel bar, 14-second penetrating bolt hole and 15-nut.
Detailed Description
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1 to 4, the inverted T-shaped steel-wood-concrete composite beam comprises a reinforced concrete slab 3 and an inverted T-shaped steel beam 1, wherein the top of a web plate of the inverted T-shaped steel beam 1 is fixedly embedded in the reinforced concrete slab 3, two sides of the inverted T-shaped steel beam 1 and the bottom side of the reinforced concrete slab 3 respectively form a groove, and the groove is fixedly filled with a wood beam 2. The inverted T-shaped steel beam 1 made of steel has the advantages of light weight, high strength, good plasticity, good toughness and the like; the wood beam 2 made of wood has the advantages of high tensile strength and the like; the concrete of the reinforced concrete slab 3 has the advantages of high compressive strength and the like; according to the embodiment, steel, concrete and wood are reasonably combined according to stress characteristics, so that respective defects can be made up, and the benefit maximization among the three materials is realized. Under the load action, the filling of the wood beam 2 can effectively prevent the edges of the web plate and the wing plate of the inverted T-shaped steel beam 1 from generating local instability, and simultaneously, the torsional rigidity of the section of the member is increased, so that the bearing capacity of the whole member is improved; meanwhile, because the wood is tightly attached to two sides of the web plate of the inverted T-shaped steel beam 1, the direct fire area of the inverted T-shaped steel beam 1 under the fire disaster condition is reduced, when the inverted T-shaped steel beam encounters the fire disaster, a flame-retardant carbonization layer can be generated on the surface of the inverted T-shaped steel beam, and the supporting time of the structure in the fire disaster is prolonged.
In this embodiment, the web of the inverted T-shaped steel beam 1 and the wood beam 2 may be fixedly connected by a plurality of first fasteners. Further, the first fastener is preferably but not limited to include a through bolt 4 and a nut 15, the middle of the web of the inverted T-shaped steel beam 1 is uniformly provided with a plurality of first through bolt holes 12 for the through bolt 4 to pass through along the length direction of the web, the wood beam 2 is uniformly provided with a plurality of second through bolt holes 14 corresponding to the first through bolt holes 12 one to one along the length direction of the wood beam, and the two ends of the inverted T-shaped steel beam 1 after the through bolt 4 passes through the corresponding first through bolt holes 12 and the corresponding second through bolt holes 14 are respectively locked and fixed by the nut 15, so that the web of the inverted T-shaped steel beam 1 and the two wood beams 2 are connected into a whole, and the whole has the advantages of convenience in assembly, reliability in fixation and the like. Furthermore, the first fastening member preferably, but not limited to, further comprises a washer 5, wherein the washer 5 is sleeved on the through bolt 4 and positioned between the nut 15 and the corresponding wood beam 2, and the nut 15 is prevented from loosening, so that the fixing between the web of the inverted T-shaped steel beam 1 and the two wood beams 2 is more reliable.
In this embodiment, the wing plate of the inverted T-shaped steel beam 1 and the wood beam 2 can be fixedly connected through a plurality of second fasteners. Further, the second fastening member preferably but not limited to include a screw 6, the two side edge portions of the wing plate of the inverted T-shaped steel beam 1 are symmetrically provided with a plurality of screw holes 10 distributed at equal intervals along the length direction thereof, and the rod portion of the screw 6 penetrates through the screw holes 10 and then is drilled (e.g., screwed or driven) into the bottom of the corresponding wood beam 2 to form the inverted T-shaped steel-wood composite beam, which has the advantages of convenience in assembly, reliability in fixation and the like.
In this embodiment, the top of the web of the inverted T-shaped steel beam 1 may be fixedly connected with the steel bars in the reinforced concrete slab 3. Further, the reinforced concrete slab 3 preferably, but not limited to, comprises an upper layer of reinforcing mesh and a lower layer of reinforcing mesh, wherein the upper layer of reinforcing mesh and the lower layer of reinforcing mesh each comprise a plurality of transverse floor reinforcing bars 9 and a plurality of longitudinal floor reinforcing bars 13 which are arranged in a staggered manner, the horizontal connecting plates 7 extending along the whole length of the inverted T-shaped steel beam 1 can be symmetrically welded on both sides of the top of the web (i.e. the area near the free end) of the inverted T-shaped steel beam, and the horizontal connecting plates 7 can be welded and fixed with the lower layer of reinforcing mesh. The horizontal connecting plate 7 is located at the position of the lower layer reinforcing mesh protective layer of the reinforced concrete plate 3, and can be used for overlapping the transverse reinforcing steel bar 9 of the floor slab and enabling the force transmission to be continuous.
In this embodiment, a plurality of through steel bar holes 11 may be uniformly formed in the top of the web of the inverted T-shaped steel beam 1 along the length direction thereof, preferably but not limited to symmetrically penetrate through the through steel bars 8 in the through steel bar holes 11, the through steel bars 8 are integrally cast in the reinforced concrete slab 3, and preferably but not limited to be located between the upper layer steel bar mesh and the lower layer steel bar mesh, so that the inverted T-shaped steel beam 1 and the reinforced concrete slab 3 are combined into a whole, the interface shear resistance of the combined beam can be effectively improved, and the longitudinal fracture of the beam can be avoided.
As shown in fig. 1 to 4, a construction method of an inverted T-shaped steel-wood-concrete composite beam includes:
in a factory, respectively processing an inverted T-shaped steel beam 1 and a wood beam 2; the method comprises the following steps that a plurality of screw holes 10 distributed at equal intervals along the length direction are symmetrically formed in the edge portions of two sides of a wing plate of an inverted T-shaped steel beam 1, a plurality of first pair of bolt holes 12 are uniformly formed in the middle of a web plate of the inverted T-shaped steel beam 1 along the length direction, a plurality of through reinforcement holes 11 are uniformly formed in the top of the web plate of the inverted T-shaped steel beam 1 along the length direction, horizontal connecting plates 7 extending along the length direction are symmetrically welded to two sides of the top of the web plate of the inverted T-shaped steel beam 1, and the horizontal connecting plates 7 are located below the through reinforcement holes 11; a plurality of second pairs of bolt holes 14 which correspond to the first pairs of bolt holes 12 one by one are uniformly formed in the wood beam 2 along the length direction;
in a factory, two wood beams 2 are respectively embedded into grooves on two sides of a web plate of an inverted T-shaped steel beam 1, so that a first pair of bolt holes 12 on the web plate of the inverted T-shaped steel beam 1 are aligned with a second pair of bolt holes 14 on the wood beams 2;
in a factory, firstly, a through bolt 4 penetrates through a first through bolt hole 12 on a web plate of an inverted T-shaped steel beam 1 and a second through bolt hole 14 on a wood beam 2, two ends of the through bolt 4 are locked by a nut 15 and a gasket 5, and then a screw 6 is aligned to a screw hole 10 on a wing plate of the inverted T-shaped steel beam 1 and drilled into the bottom of the corresponding wood beam 2 to form the inverted T-shaped steel-wood combined beam;
the method comprises the steps of conveying an inverted T-shaped steel-wood composite beam assembled in a factory to a construction site, fixing the inverted T-shaped steel-wood composite beam at a preset position, firstly erecting a template on the top of the inverted T-shaped steel-wood composite beam, then laying a lower layer of reinforcing mesh in the template, spot-welding and overlapping floor slab transverse reinforcing steel bars 9 in the lower layer of reinforcing mesh on a horizontal connecting plate 7, symmetrically penetrating through reinforcing steel bars 8 into through reinforcing steel bar holes 11 in the top of a web plate of the inverted T-shaped steel beam 1, then laying an upper layer of reinforcing mesh in the template, and finally pouring concrete in the template to form a reinforced concrete slab 3; and (3) removing the template after the reinforced concrete slab 3 is hardened to obtain the inverted T-shaped steel-wood-concrete composite beam.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the embodiments of the invention or equivalent substitutions of parts of the technical features can be made without departing from the spirit of the technical solution of the invention, which is to be covered by the technical solution of the invention.
Claims (10)
1. The inverted-T-shaped steel-wood-concrete combined beam is characterized by comprising a reinforced concrete slab and an inverted-T-shaped steel beam, wherein the top of a web plate of the inverted-T-shaped steel beam is fixedly embedded into the reinforced concrete slab, two sides of the inverted-T-shaped steel beam and the bottom side of the reinforced concrete slab respectively form a groove in a surrounding mode, and the wood beam is fixedly filled in the groove.
2. The novel inverted-T-shaped steel-wood-concrete composite beam as claimed in claim 1, wherein: the web plate of the inverted T-shaped steel beam is fixedly connected with the wood beam through a plurality of first fasteners.
3. The novel inverted-T-shaped steel-wood-concrete composite beam as claimed in claim 2, wherein: the first fastener comprises a pair of through bolts and nuts, a plurality of first pair of through bolt holes for the pair of through bolts to pass through are uniformly formed in the middle of a web plate of the inverted T-shaped steel beam along the length direction of the web plate, a plurality of second pair of through bolt holes in one-to-one correspondence with the first pair of through bolt holes are uniformly formed in the wood beam along the length direction of the wood beam, and the two ends, after the pair of through bolts pass through the corresponding first pair of through bolt holes and the second pair of through bolt holes, of the wood beam are respectively locked and fixed by the nuts.
4. The novel inverted-T-shaped steel-wood-concrete composite beam as claimed in claim 3, wherein: the first fastener further comprises a washer, and the washer is sleeved on the opposite-penetrating bolt and located between the nut and the corresponding wood beam.
5. The novel inverted-T steel-wood-concrete composite beam according to claim 1 or 2, characterized in that: and the wing plates of the inverted T-shaped steel beam are fixedly connected with the wood beam through a plurality of second fasteners.
6. The novel inverted-T-shaped steel-wood-concrete composite beam as claimed in claim 5, wherein: the second fastener comprises a screw, a plurality of screw holes distributed at equal intervals along the length direction of the inverted T-shaped steel beam are symmetrically formed in the edge portions of two sides of the wing plate of the inverted T-shaped steel beam, and the rod portion of the screw penetrates through the screw holes and then is drilled into the bottom of the corresponding wood beam.
7. The novel inverted-T-shaped steel-wood-concrete composite beam as claimed in claim 1, wherein: the top of the web plate of the inverted T-shaped steel beam is fixedly connected with the steel bars in the reinforced concrete slab.
8. The novel inverted-T steel-wood-concrete composite beam of claim 7, wherein: reinforced concrete slab includes upper reinforcing bar net and lower floor's reinforcing bar net, upper reinforcing bar net and lower floor's reinforcing bar net are all including crisscross a plurality of floor horizontal reinforcing bars and the vertical reinforcing bar of a plurality of floors that set up, the welding of web top bilateral symmetry of the steel bar beam of falling T shape has the horizontal connecting plate who extends along its length direction full length, horizontal connecting plate and lower floor's reinforcing bar net welded fastening.
9. The novel inverted-T steel-wood-concrete composite beam of claim 8, wherein: a plurality of penetrating reinforcing steel bar holes are uniformly formed in the top of the web plate of the inverted T-shaped steel beam along the length direction of the web plate, penetrating reinforcing steel bars are symmetrically arranged in the penetrating reinforcing steel bar holes in a penetrating mode, and the penetrating reinforcing steel bars are integrally poured in a reinforced concrete slab and located between an upper layer reinforcing steel bar net and a lower layer reinforcing steel bar net.
10. A construction method of an inverted T-shaped steel-wood-concrete composite beam is characterized by comprising the following steps:
respectively processing an inverted T-shaped steel beam and a wood beam in a factory; the method comprises the following steps that a plurality of screw holes which are distributed at equal intervals along the length direction of the screw holes are symmetrically formed in the edge portions of two sides of a wing plate of an inverted T-shaped steel beam, a plurality of first pair of bolt holes are uniformly formed in the middle of a web plate of the inverted T-shaped steel beam along the length direction of the web plate, a plurality of through reinforcement holes are uniformly formed in the top of the web plate of the inverted T-shaped steel beam along the length direction of the web plate, horizontal connecting plates which extend along the length direction of the web plate are symmetrically welded on two sides of the top of the web plate of the inverted T-shaped steel beam, and the horizontal connecting plates are located below the through reinforcement holes; a plurality of second pairs of through bolt holes which are in one-to-one correspondence with the first pairs of through bolt holes are uniformly formed in the wood beam along the length direction of the wood beam;
in a factory, two wood beams are respectively embedded into grooves on two sides of a web plate of the inverted T-shaped steel beam, so that a first pair of through bolt holes in the web plate of the inverted T-shaped steel beam are aligned with a second pair of through bolt holes in the wood beams;
in a factory, firstly, penetrating a through bolt through a first through bolt hole on a web plate of the inverted T-shaped steel beam and a second through bolt hole on the wood beam, locking two ends of the through bolt through a nut and a washer, and then aligning a screw to a screw hole on a wing plate of the inverted T-shaped steel beam to drill into the bottom of the corresponding wood beam to form the inverted T-shaped steel-wood combined beam;
the method comprises the following steps of conveying an inverted T-shaped steel-wood composite beam assembled in a factory to a construction site, fixing the inverted T-shaped steel-wood composite beam at a preset position, firstly erecting a template on the top of the inverted T-shaped steel-wood composite beam, then laying a lower layer of reinforcing mesh in the template, spot-welding floor transverse reinforcing steel bars in the lower layer of reinforcing mesh on a horizontal connecting plate, symmetrically penetrating through reinforcing steel bars into through reinforcing steel bar holes in the top of a web plate of the inverted T-shaped steel beam, then laying an upper layer of reinforcing mesh in the template, and finally pouring concrete in the template to form the reinforced concrete slab; and (4) removing the template after the reinforced concrete slab is hardened to obtain the inverted T-shaped steel-wood-concrete composite beam.
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| CN202110649373.1A CN113374172A (en) | 2021-06-10 | 2021-06-10 | Inverted T-shaped steel-wood-concrete combined beam and construction method thereof |
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| CN202110649373.1A CN113374172A (en) | 2021-06-10 | 2021-06-10 | Inverted T-shaped steel-wood-concrete combined beam and construction method thereof |
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|---|---|---|---|---|
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| CN101435249A (en) * | 2008-12-22 | 2009-05-20 | 华侨大学 | Novel steel-concrete combination beam |
| CN108797889A (en) * | 2018-08-30 | 2018-11-13 | 河北建筑工程学院 | A kind of steel and wood composite girder construction and its construction method |
| CN110241973A (en) * | 2019-07-19 | 2019-09-17 | 福州大学 | A kind of steel-wood-concrete combination beam and its construction method |
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2021
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| DE68900366D1 (en) * | 1988-02-19 | 1991-12-05 | Arbed | BLANKET INCORPORATED IN THE CEILING. |
| CN2893034Y (en) * | 2006-06-14 | 2007-04-25 | 北京建工一建工程建设有限公司 | Web plate open slot type inverted T shape steel and concrete combined beam |
| CN101435249A (en) * | 2008-12-22 | 2009-05-20 | 华侨大学 | Novel steel-concrete combination beam |
| CN108797889A (en) * | 2018-08-30 | 2018-11-13 | 河北建筑工程学院 | A kind of steel and wood composite girder construction and its construction method |
| CN110241973A (en) * | 2019-07-19 | 2019-09-17 | 福州大学 | A kind of steel-wood-concrete combination beam and its construction method |
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