CN113738003B - Easy-to-disassemble and assemble stainless steel-wood-lightweight concrete combined beam-slab system and construction method - Google Patents
Easy-to-disassemble and assemble stainless steel-wood-lightweight concrete combined beam-slab system and construction method Download PDFInfo
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- CN113738003B CN113738003B CN202111083697.XA CN202111083697A CN113738003B CN 113738003 B CN113738003 B CN 113738003B CN 202111083697 A CN202111083697 A CN 202111083697A CN 113738003 B CN113738003 B CN 113738003B
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
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- E—FIXED CONSTRUCTIONS
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- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/023—Separate connecting devices for prefabricated floor-slabs
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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
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/14—Load-carrying floor structures formed substantially of prefabricated units with beams or girders laid in two directions
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- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/049—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres completely or partially of insulating material, e.g. cellular concrete or foamed plaster
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
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- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
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- 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
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Abstract
The invention relates to the field of civil engineering, in particular to an easily-disassembled stainless steel-wood-lightweight concrete composite beam plate system and a construction method thereof. The beam-slab structure system is formed by combining stainless steel, wood and lightweight concrete, and has the advantages of convenience in disassembly and assembly, light dead weight, corrosion resistance, environmental friendliness, stability and the like.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a stainless steel-wood-lightweight concrete combined beam-slab system easy to assemble and disassemble and a construction method.
Background
With the development of our society and the increase of economy, the population dividend of our country is disappearing, and the construction industry faces the problems of labor shortage and rapid rise of labor cost. Meanwhile, the traditional site construction mode also faces increasingly prominent problems of environmental pollution, water resource waste, large quantity of construction waste and the like. In order to solve the problems and maintain the sustainable development of the building industry, in recent years, China vigorously pushes building industrialization, develops assembly type buildings and promotes the development of green and environment-friendly buildings.
Compared with the traditional reinforced concrete structure, brick concrete structure and steel structure, the wood structure has the advantages of good earthquake resistance, low building energy consumption, light dead weight, convenient construction, heat preservation, energy conservation and the like. But the compression strength of the wood is far lower than the tensile strength and the elastic modulus is lower, and simultaneously, the wood has obvious anisotropic characteristics, so that the bending bearing capacity of the wood structure is poor. In addition, the fire resistance of the wood is poor, and the wide engineering application of the wood structure is greatly restricted.
The steel structure is widely applied to various building structures due to the advantages of light weight, high strength, convenient construction, good plasticity and earthquake resistance and the like. At present, steel of a traditional steel structure is mostly low-carbon steel and low-alloy steel, and the steel is extremely easy to be affected by corrosive media in air to corrode after long-term work in a severe environment. Although the steel structure is subjected to certain anticorrosion treatment, the anticorrosion layer can fail from weak parts with the lapse of time; further, the steel material is corroded to cause the deterioration of various mechanical performance indexes such as strength, elastic modulus, ductility and the like; and the ductility and the seismic performance of the steel structure are finally influenced, so that the probability of structural safety accidents is increased.
The traditional steel and concrete combined beam is a reasonable and economic structural form, and has a series of advantages of saving steel, reducing manufacturing cost, increasing the rigidity of the beam, improving bearing capacity and the like. However, in order to avoid the problem of local and overall instability of the section steel beam, the stability of the steel member needs to be improved by measures such as increasing the thickness of the plate, adding stiffening ribs at the positions of the webs, arranging transverse supports and mid-span supports and the like during design. The increase of steel consumption and the existence of concrete lead to the structure from great weight, and the efficiency of construction has also been reduced in the pouring of concrete simultaneously.
Disclosure of Invention
The invention aims to provide an easily-disassembled and assembled stainless steel-wood-lightweight concrete combined beam-slab system and a construction method thereof.
The technical scheme of the invention is as follows: the stainless steel-wood-lightweight concrete composite beam slab system easy to assemble and disassemble comprises a stainless steel-wood-lightweight concrete composite beam arranged between two adjacent H-shaped stainless steel columns along the longitudinal bridge direction, a stainless steel-wood composite beam arranged between two adjacent H-shaped stainless steel columns along the transverse bridge direction, a wood-lightweight reinforced concrete composite slab arranged between the two stainless steel-wood-lightweight concrete composite beams along the transverse bridge direction, and two ends of the wood-lightweight reinforced concrete composite slab are respectively arranged on the upper sides of the corresponding stainless steel-wood composite beams.
Furthermore, the stainless steel-wood-lightweight concrete composite beam comprises a combined I-shaped stainless steel beam, a composite beam plate with a wood floor is longitudinally cast on the upper portion of the combined I-shaped stainless steel beam, longitudinal wood beams are respectively installed between two sides of a lower flange of the combined I-shaped stainless steel beam and the bottom surface of the composite beam plate, and two ends of the combined I-shaped stainless steel beam are connected with corresponding H-shaped stainless steel columns.
Furthermore, the combined I-shaped stainless steel beam comprises T-shaped stainless steel with the upper part embedded in the combined beam plate, and left L-shaped stainless steel and right L-shaped stainless steel which are matched with the T-shaped stainless steel to form the I-shaped stainless steel beam are correspondingly installed on two sides of the lower part of the T-shaped stainless steel.
Furthermore, transverse internal thread sleeves penetrating through the T-shaped stainless steel, the left L-shaped stainless steel and the right L-shaped stainless steel are arranged on a web plate of the combined I-shaped stainless steel beam at intervals along the longitudinal direction, two ends of each transverse internal thread sleeve extend into the longitudinal wood beam, bolts in threaded connection with the transverse internal thread sleeves are arranged on the longitudinal wood beam, screw holes are arranged on the lower flanges of the left L-shaped stainless steel beam and the right L-shaped stainless steel beam at intervals, and screws connected with the longitudinal wood beam are installed on the bolts.
Furthermore, the combined beam slab comprises a steel reinforcement framework, concrete is poured around the steel reinforcement framework, wood boards are installed on the top surface and the side surfaces of the concrete, the matching surface of the wood boards and the concrete is in a sawtooth shape, and the upper surfaces of the wood boards are flat surfaces; the upper surface of the composite beam plate is flush with the upper surface of the wood-lightweight reinforced concrete composite plate.
Furthermore, the steel reinforcement framework comprises longitudinal steel reinforcements arranged at the top and the bottom of the combined beam slab and at the position of the shape sudden change, stirrups are wrapped outside the longitudinal steel reinforcements, and transverse steel reinforcements perpendicular to the longitudinal steel reinforcements penetrate through the upper part of a web plate of the combined I-shaped stainless steel beam at longitudinal intervals.
Furthermore, two end parts of the combined I-shaped stainless steel beam extend out of the combined beam plate, two side surfaces of a web plate of the extending end are respectively fixed with an L-shaped connecting steel plate through bolts, and the L-shaped connecting steel plate is fixedly connected with the web plate of the H-shaped stainless steel column through bolts; and the two ends of the longitudinal wood beam are respectively provided with a convex part which extends upwards to the bottom surface of the upper flange of the combined I-shaped stainless steel beam and wraps the end part of the combined beam plate.
Furthermore, the stainless steel-wood composite beam comprises a stainless steel I-beam, wherein transverse wood beams are arranged on two sides of a web plate of the stainless steel I-beam, longitudinal internal thread sleeves penetrate through the web plate of the stainless steel I-beam at intervals along the transverse direction, bolts in threaded connection with the longitudinal internal thread sleeves are arranged on the transverse wood beams, screw holes are arranged on the lower flange of the stainless steel I-beam at intervals, and screws connected with the transverse wood beams are arranged on the lower flange of the stainless steel I-beam; and both ends of the stainless steel I-beam are connected with wing plates of the H-shaped stainless steel column through L-shaped connecting steel plates.
Further, the wood-lightweight reinforced concrete composite board is divided into a first board I and a second board II, wherein the first board I is provided with a first convex part at the upper part of one side of the first board, the second convex part is provided at the lower part of the other side of the first board, the second board II is of an inverted convex shape, a reinforcement cage is respectively arranged in the first board I and the second board II, concrete is poured around the reinforcement cage, wood boards are respectively arranged on the top surface and the side surface of the concrete, the matching surface of the wood boards and the concrete is in a sawtooth shape, and the upper surface of the wood boards is a flat surface; screws are pre-embedded at the lower sides of the two ends of the first plate and the second plate at intervals, and the screws extend into reserved screw sleeves arranged on the stainless steel-wood composite beam.
A construction method applied to an easily-disassembled and assembled stainless steel-wood-lightweight concrete combined beam-slab system comprises the following steps:
(1) prefabricating a combined beam plate: pouring a manufactured wood board as a template in a prefabricated field, arranging one end, provided with a wing plate, of the T-shaped stainless steel in the template, placing a steel reinforcement framework in the template, enabling transverse steel bars in the steel reinforcement framework to penetrate through reserved steel bar holes of the T-shaped stainless steel plate, pouring concrete, and not demolding after the concrete is hardened;
(2) prefabricating a wood-light reinforced concrete composite board: taking the manufactured wood board as a template, arranging a reinforcement cage in the template, embedding a row of screws at two ends of the template respectively, pouring concrete, and not demoulding after the concrete is hardened;
(3) installing a primary beam column supporting system: installing L-shaped connecting steel plates at two ends of the T-shaped stainless steel of the combined beam plate, and connecting the L-shaped connecting steel plates with webs of H-shaped stainless steel columns; mounting the left L-shaped stainless steel and the right L-shaped stainless steel on two sides of a web plate of the T-shaped stainless steel; and L-shaped connecting steel plates are respectively arranged on two sides of webs at two ends of the stainless steel I-beam and are connected with wing plates of the H-shaped stainless steel column through the L-shaped connecting steel plates to form a primary beam-column supporting system.
(4) Installing the stainless steel-wood-lightweight concrete composite beam and the stainless steel-wood composite beam: mounting longitudinal wood beams on two sides of a web plate of the combined I-shaped stainless steel beam to form a stainless steel-wood-concrete combined beam; mounting the transverse wood beam on two sides of a web plate of the stainless steel I-beam to form a stainless steel-wood combined beam;
(5) installing the wood-light reinforced concrete composite board: coating high-strength waterproof colloid on the interface of the wood-lightweight reinforced concrete composite slab and the interface of the composite beam slab, laying the wood-lightweight reinforced concrete composite slab between the composite beam slabs of the two stainless steel-wood-lightweight reinforced concrete composite beams, supporting two ends of the wood-lightweight reinforced concrete composite slab on the stainless steel-wood composite beams, and extending screws on the wood-lightweight reinforced concrete composite slab into reserved screw sleeves of the stainless steel-wood composite beams.
Compared with the prior art, the invention has the following advantages:
1. based on the combination of the advantages of high compressive strength of concrete, good tensile strength and corrosion resistance of stainless steel and the like. The timber is reasonably utilized, so that the timber is used as a template when the concrete slab of the beam slab system is manufactured and is not required to be dismantled to be directly used as an indoor floor in the later period, and the timber and the stainless steel beam are connected into a whole to improve the section rigidity and the stability of the combined beam. And the use of lightweight concrete further reduces the structure dead weight, and each part atress is reasonable and connect conveniently, forms the composite structure beam slab system of easy dismouting.
2. By utilizing concrete compression, stainless steel beams and wood tension and effectively reducing the steel consumption and improving the stability of the thin-wall stainless steel beams through the wood, the mechanical properties of the three materials are reasonably and fully exerted; the self weight of the structure can be greatly reduced by using the lightweight concrete and the wood; the ductility and corrosion resistance of the whole beam-slab structure are improved by using stainless steel; the wood is used as a light concrete early-stage pouring template and a later-stage structure decorative floor, so that the prefabrication rate, the material use efficiency and the green degree are greatly improved; the problem of fussy welding of the traditional steel-concrete combined beam connecting piece is solved by prefabricating and combining the assembled stainless steel beam and the lightweight concrete plate. Meanwhile, the spliced stainless steel beam is connected with the wood, so that the construction efficiency is further improved, and the stability of the steel beam is improved; and through the cooperation of different combination beams and compoboards, the assembly efficiency and later stage maintenance replacement cost of this type of novel beam slab system have been promoted greatly.
3. The beam-slab structure system is formed by combining stainless steel, wood and lightweight concrete, and compared with the traditional combined beam and reinforced concrete structure, the beam-slab structure system has the advantages of light dead weight, corrosion resistance, environmental friendliness, good stability and the like.
4. The method makes full use of wood, so that the wood is used as a template when the concrete slab is manufactured and is used as an indoor floor in the later period without being dismantled, and the wood and the stainless steel beam are connected into a whole to reduce the thickness of the stainless steel beam and improve the section rigidity and the stability of the combined beam.
5. The T-shaped and L-shaped stainless steel beams are combined to work, so that the assembly and disassembly efficiency can be improved, and the local disassembly and replacement of the structure during later maintenance are realized; meanwhile, the problem that construction is complicated due to the fact that a shear connector needs to be arranged in a traditional steel-concrete combined structure is solved through the prefabricated connection of the T-shaped stainless steel beam and the lightweight concrete, and the steel consumption is further optimized to reduce cost.
6. The section form and the connection mode of the steel-wood-concrete combined beam slab endow the beam slab structural system with the characteristics of convenience in disassembly and assembly, high construction efficiency and high steel recovery rate. The sectional forms of the combination beam, the plate I and the plate II enable the sectional combination to have great flexibility, the requirements of different spans and structural arrangement can be met, and the engineering adaptability is strong. Meanwhile, when the combined beam slab is assembled on a construction site, the combined beam slab only needs to be connected by bolts and bonded by high-strength glue, and on-site concrete wet operation is not needed, so that the environmental pollution and the resource waste are reduced, and the construction efficiency is improved; in addition, the building structure can realize the assembly type replacement of local components, and simultaneously, the recovery rate of stainless steel is high after the building structure is dismantled, so that the construction cost of the whole life cycle of the structure is reduced.
Drawings
FIG. 1 is a plan view of a composite beam panel of the present invention;
FIG. 2 is a cross-sectional view taken along line I-I of the composite beam panel of the present invention;
fig. 3 is a cross-sectional view of the stainless steel-wood-lightweight concrete composite beam 1-1 according to the present invention;
FIG. 4 is a sectional view of the stainless steel-wood-lightweight concrete composite beam 1-1 according to the present invention;
FIG. 5 is an overall view of the connection of the beam-column joint of the stainless steel-wood-lightweight concrete composite beam of the present invention;
FIG. 6 is a detailed view of the beam-column joint arrangement of the stainless steel-wood-lightweight concrete composite beam of the present invention;
FIG. 7 is an overall side elevational view of the stainless steel-wood-lightweight concrete composite beam of the present invention;
FIG. 8 is a detailed side elevation view of the stainless steel-wood-lightweight concrete composite beam connection arrangement of the present invention;
fig. 9 is a sectional view of the stainless steel-wood composite beam 1-1 according to the present invention;
FIG. 10 is a cross-sectional view of a stainless steel I-beam 1-1 of the present invention;
FIG. 11 is a drawing of the connection of a H-beam to a stainless steel H-column according to the present invention;
FIG. 12 is a side elevational view of a stainless steel I-beam of the present invention;
FIG. 13 is a cross-sectional view of a plate I of the present invention;
FIG. 14 is a cross-sectional view of an end of a I-plate of the present invention;
FIG. 15 is a side elevational view of the I-plate of the present invention;
FIG. 16 is a mid-span cross-sectional view of a plate II of the present invention;
FIG. 17 is a cross-sectional view of an end of a plate II of the present invention;
FIG. 18 is a side elevational view of a panel II of the present invention;
FIG. 19 is a cross-sectional view of the composite beam panel 2-2 of the present invention;
FIG. 20 is a column and beam node connection diagram of the present invention;
FIG. 21 is a cross-sectional view taken along line a-a of FIG. 19 of the present invention (showing the panel I assembled with the I-beam);
FIG. 22 shows b-b of FIG. 19 (the assembly and connection of the I-plate to the I-beam) according to the present invention;
FIG. 23 is a view of the invention from c-c of FIG. 19 (the assembly of the plate II with the I-beam);
in the figure: 10-H-shaped stainless steel column 20-high-strength waterproof colloid 100-stainless steel-wood-lightweight concrete composite beam 111-T-shaped stainless steel 112-left L-shaped stainless steel 113-right L-shaped stainless steel 114-transverse internal thread bushing 115-bolt 116-screw hole 117-bolt 118-stud 119-reserved steel bar hole 120-sleeve hole 121-concrete 122-wood plate 123-longitudinal steel bar 124-transverse steel bar 125-L-shaped connecting steel plate 126-stud 127-stud 130-longitudinal wood beam 131-bulge 200-stainless steel-wood composite beam 201-hole 210-stainless steel I-beam 211-sleeve hole 212-longitudinal internal thread bushing 213-bolt 214-215 screw hole- The screw 216-L-shaped connecting steel plate 217-reserved screw hole 218-reserved screw sleeve 219-stud bolt 220-transverse wood beam 310-I plate 311-first convex part 312-second convex part 313-longitudinal steel bar 314-transverse steel bar 315-concrete 316-wood plate 317-screw 320-II plate.
Detailed Description
In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
Refer to fig. 1 to 23
An easily assembled and disassembled stainless steel-wood-lightweight concrete composite beam slab system comprises a stainless steel-wood-lightweight concrete composite beam 100 which is arranged between two adjacent H-shaped stainless steel columns 10 along the longitudinal bridge direction, a stainless steel-wood composite beam 200 which is arranged between two adjacent H-shaped stainless steel columns along the transverse bridge direction, a wood-lightweight reinforced concrete composite slab which is arranged between the two stainless steel-wood-lightweight concrete composite beams along the transverse bridge direction, and two ends of the wood-lightweight reinforced concrete composite slab are respectively arranged on the upper sides of the corresponding stainless steel-wood composite beams. The interface of two adjacent wood-light reinforced concrete composite boards and the interface of the wood-light reinforced concrete composite board and the stainless steel-wood-light concrete composite beam are coated with high-strength waterproof colloid 20, so that the assembled wood-light reinforced concrete composite boards and the stainless steel-wood-light concrete composite beam are reliably bonded, and the assembled beam boards can bear force and deform coordinately.
In this embodiment, in order to be better disassembled and assembled, the stainless steel-wood-lightweight concrete composite beam includes a combined i-shaped stainless steel beam, a composite beam slab with a wood floor is longitudinally cast on the upper portion of the combined i-shaped stainless steel beam, a longitudinal wood beam 130 is installed between both sides of a lower flange of the combined i-shaped stainless steel beam and the bottom surface of the composite beam slab, and both ends of the combined i-shaped stainless steel beam are connected with webs of corresponding H-shaped stainless steel columns.
In this embodiment, in order to facilitate assembly of the combined i-shaped stainless steel beam, the combined i-shaped stainless steel beam includes a T-shaped stainless steel 111 whose upper portion is embedded in the combined beam plate, and a left L-shaped stainless steel 112 and a right L-shaped stainless steel 113 which are matched with the T-shaped stainless steel to form the i-shaped stainless steel beam are correspondingly installed on two sides of the lower portion of the T-shaped stainless steel.
In this embodiment, the web of the combined i-shaped stainless steel beam is provided with transverse internal thread sleeves 114 at longitudinal intervals, the transverse internal thread sleeves extend into the longitudinal wood beam, the longitudinal wood beam is provided with bolts 115 screwed with the transverse internal thread sleeves, and the bolts 115 are hexagon socket bolts, so that the longitudinal wood beam is ensured to be tightly attached to two sides of the web of the stainless steel beam and the longitudinal wood beam to be reliably connected, the section rigidity and stability of the combined i-shaped stainless steel beam are improved, and the risk of local buckling and overall instability is reduced. Screw holes 116 are arranged on the lower flanges of the left and right L-shaped stainless steel beams at equal intervals, and screws 117 connected with the longitudinal wood beam are arranged, so that tight connection between the wood beam and the stainless steel beams is further ensured.
In this embodiment, the web positions of the three types of steel beams, i.e., the left L-shaped stainless steel, the T-shaped stainless steel and the right L-shaped stainless steel, are perforated at certain intervals, and a part of the three steel beams are connected by the stud bolts 118 to form a combined i-shaped stainless steel beam which is subjected to force and deforms in a coordinated manner; the other part is used for penetrating through a transverse internal thread sleeve 114 to ensure that the combined I-shaped stainless steel beam is reliably connected with longitudinal wood beams on two sides of the web plate so as to improve the section rigidity and stability of the stainless steel-wood-lightweight concrete combined beam.
Reserved steel bar holes 119 of transverse steel bars are formed in the upper portion of the web plate of the T-shaped stainless steel according to a certain interval, so that the continuity of the transverse steel bars in the transverse direction is guaranteed, and meanwhile, the T-shaped stainless steel, the steel bar framework and the light concrete are guaranteed to form a whole to be stressed and deformed together.
In this embodiment, the combination beam slab includes framework of steel reinforcement, concrete 121 has been pour around the framework of steel reinforcement, plank 122 is all installed to the top surface and the side of concrete, the fitting surface of plank and concrete is the cockscomb structure to increase the frictional force between plank and the concrete, guarantee that its in use can not take place to slide. The upper surface of the wood board is a flat surface, and the upper surface (the surface which is not in contact with concrete) of the wood board is polished and painted to ensure that the surface is flat and attractive in appearance in consideration of the fact that the wood board is directly used as a floor of a used ground after construction is finished. The upper surface of the composite beam plate is flush with the upper surface of the wood-lightweight reinforced concrete composite plate.
In this embodiment, the steel reinforcement framework includes longitudinal steel reinforcements 123 arranged at the top, bottom and shape mutation positions of the combined beam slab, and the longitudinal steel reinforcements are long and bent and anchored at two ends of the beam; the hoop reinforcement is wrapped outside the longitudinal reinforcement, and the transverse reinforcement 124 perpendicular to the longitudinal reinforcement penetrates through the reserved reinforcement hole 119 in the upper portion of the T-shaped stainless steel web plate along the longitudinal direction to form a double-limb hoop reinforcement, so that the longitudinal reinforcement and the transverse reinforcement jointly form a reinforcement framework of the combined beam slab. And then concrete is poured, after the reinforced concrete is hardened, the wood board at the bottom can be used as a floor in use, the demoulding procedure is omitted, and the steel-concrete composite beam with the wood floor is formed.
In this embodiment, two end portions of the combined i-shaped stainless steel beam extend out of the combined beam plate, and L-shaped connecting steel plates 125 are fixed to two side surfaces of a web plate of the extending end through stud bolts 127, respectively, and the L-shaped connecting steel plates are fixedly connected with the web plate of the H-shaped stainless steel column through stud bolts 126; and both ends of the longitudinal wood beam are provided with protrusions 131 which extend upwards to the bottom surface of the upper flange of the combined I-shaped stainless steel beam and wrap the end part of the combined beam plate.
The stainless steel-wood-lightweight concrete composite beam is connected with the joint of the H-shaped stainless steel column through the bolts, the end part of the combined I-shaped stainless steel beam needs to extend into the H-shaped stainless steel column, so that the T-shaped stainless steel protruding part at the end part of the combined I-shaped stainless steel beam is not restrained by concrete, the height of the longitudinal wood beam is increased (the protruding part 131), the longitudinal wood beam is extended to the bottom surface of the upper flange of the T-shaped stainless steel, and the stability of the whole section steel beam at the joint of the joint is ensured.
Considering that the connection between the combined I-shaped stainless steel beam and the H-shaped stainless steel column is bolt connection, bolt holes are reserved at web plates at two ends of the combined I-shaped stainless steel beam and are used for bolt connection of column beam nodes and hexagon socket head cap bolt connection of the wood beam.
In this embodiment, the stainless steel-wood composite beam includes a stainless steel i-beam 210, horizontal wood beams 220 are installed on both sides of a web plate of the stainless steel i-beam, sleeve holes 211 are formed in the web plate of the stainless steel i-beam at intervals in the horizontal direction, a longitudinal internal thread sleeve 212 penetrates through the sleeve holes, and a bolt 213 screwed with the longitudinal internal thread sleeve is arranged on the horizontal wood beam and is a hexagon socket head cap screw, so that the horizontal wood beam is ensured to be tightly attached to both sides of the web plate of the stainless steel beam and the horizontal wood beams to be reliably connected, the section rigidity and stability of the stainless steel i-beam are improved, and the risk of local buckling and overall instability is reduced. Screw holes 214 are arranged on the lower flange of the stainless steel I-beam at intervals, and screws 215 connected with the transverse wood beam are arranged on the stainless steel I-beam at intervals, so that the transverse wood beam is tightly connected with the stainless steel I-beam. Both ends of the stainless steel I-beam are connected with wing plates of the H-shaped stainless steel column through L-shaped connecting steel plates 216 and stud bolts 219.
In this embodiment, considering that the connection between the H-shaped stainless steel column and the H-shaped stainless steel i-beam through the L-shaped connecting steel plate is also a bolt connection, the web plate positions at the two ends of the stainless steel i-beam are provided with holes 201 for bolt connection of the column beam node and hexagon socket head cap bolt connection of the transverse wood beam.
In this embodiment, the reserved screw hole 217 is formed in the upper flange of the stainless steel i-beam at a certain distance, and the reserved screw sleeve 218 extending into the transverse wood beam is installed in the screw hole, so that a screw pre-embedded in the wood-lightweight reinforced concrete composite board can be directly inserted into the reserved screw sleeve during later assembly, and reliable connection is formed.
In the embodiment, the wood-lightweight reinforced concrete composite board is divided into a first board 310 with a first convex part 311 on the upper part of one side and a second convex part 312 on the lower part of the other side and a second board 320 in an inverted convex shape, wherein the first board and the second board are respectively provided with a reinforcement cage, the reinforcement cage is provided with longitudinal reinforcements 313 at the top, the bottom and the shape mutation positions of the composite board, and the longitudinal reinforcements are full-length and are bent and anchored at the two end positions of a beam; the transverse reinforcement 314 is arranged along the direction perpendicular to the longitudinal reinforcement to form a double-limb stirrup, and the longitudinal reinforcement and the transverse reinforcement together form a reinforcement cage. Concrete 315 is poured around the reinforcement cage, wood plates 316 are installed on the top surface and the side surfaces of the concrete, and the matching surfaces of the wood plates and the concrete are zigzag, so that the friction force between the wood plates and the concrete is increased, and the slippage of the wood plates and the concrete is avoided during use. The upper surface of the wood board is a flat surface, and the upper surface (the surface which is not in contact with concrete) of the wood board is polished and painted to ensure that the surface is flat and attractive in appearance in consideration of the fact that the wood board is directly used as a floor of a used ground after construction is finished.
In this embodiment, screws 317 are embedded at intervals on the lower sides of both ends of the first plate and the second plate, and the screws extend into the reserved screw sleeves 218 arranged on the stainless steel-wood composite beam, so that the composite plate is fixed on the stainless steel-wood composite beam.
After the reinforced concrete slab is hardened after the concrete is poured, the composite slab is formed. The cross section of the composite slab has two forms of a slab I and a slab II, and the slab I, the slab II and the composite beam are flexibly combined, so that the requirements of different spans and structural arrangement can be met, and the engineering adaptability is strong.
In this embodiment, when the transverse wood beam and the longitudinal wood beam are processed, holes corresponding to the positions of the sleeves and the bolts are reserved on the transverse wood beam and the longitudinal wood beam in order to ensure the integral stress coordination and the attractiveness of the combined beam.
A construction method applied to an easily-disassembled and assembled stainless steel-wood-lightweight concrete combined beam-slab system comprises the following steps:
(1) manufacturing left L-shaped stainless steel, T-shaped stainless steel and right L-shaped stainless steel: holes are formed in web plate positions of three types of steel beams, namely left L-shaped stainless steel, T-shaped stainless steel and right L-shaped stainless steel at certain intervals; reserved steel bar holes are formed in the upper portion of a web plate of the T-shaped stainless steel at certain intervals; screw holes are arranged on two sides of the lower flange of the left L-shaped stainless steel beam and the right L-shaped stainless steel beam at certain intervals.
(2) Processing a wood board: specially processing the surface of the wood board, which is in contact with the concrete, so that the surface of the wood board is serrated; and (3) polishing, grinding, painting and the like are carried out on the upper surface (the surface which is not in contact with the concrete) of the wood board.
(3) Processing a longitudinal wood beam: in order to ensure the integral stress coordination and the attractiveness of the combined beam, the longitudinal wood beam is provided with a hole at the corresponding stud bolt position at the bolt connection position of the web plate of the combined I-shaped stainless steel beam, and the stud bolt also limits the relative displacement between the longitudinal wood beam and the web plate. And sleeve holes of the transverse internal thread sleeves are reserved at corresponding positions of the longitudinal wood beams, so that later bolt connection of the longitudinal wood beams is facilitated, the longitudinal wood beams are tightly attached to two sides of a web plate of the stainless steel beam, the stability of the stainless steel beam is improved, and the risks of local buckling and overall instability are reduced.
In addition, the stainless steel-wood-lightweight concrete composite beam and the H-shaped stainless steel column are connected at the joint of the stainless steel-wood-lightweight concrete composite beam, the H-shaped stainless steel column and the web plate of the stainless steel-wood-lightweight concrete composite beam are connected through bolts, and the end part of the combined I-shaped stainless steel beam of the stainless steel-wood-lightweight concrete composite beam needs to extend into the H-shaped stainless steel column, so that the T-shaped stainless steel protruding part at the end part of the combined I-shaped stainless steel beam is not restrained by concrete, and the height of the end part of the longitudinal wood beam needs to be increased to form an upper protruding part, so that the longitudinal wood beam extends to the bottom surface of the upper flange of the T-shaped stainless steel, and the stability of the whole section steel beam at the joint is ensured.
(4) Processing a transverse wood beam: at the bolt connection part of the web plate of the stainless steel I-beam, in order to ensure the integral stress coordination and the beauty of the combined beam, the transverse wood beam is provided with a hole at the corresponding stud bolt position at the bolt connection part of the web plates at the two ends of the stainless steel I-beam. The sleeve holes of the longitudinal internal thread sleeves are reserved in the corresponding positions of the transverse wood beams, so that bolt connection of the transverse wood beams is facilitated, the transverse wood beams are tightly attached to two sides of a web plate of the stainless steel I-beam, the stability of the stainless steel I-beam is improved, and the risks of local buckling and overall instability are reduced.
(5) Manufacturing a stainless steel I-beam: the screw holes are reserved on the upper flange of the stainless steel I-beam according to a certain distance, so that the embedded screws of the combined plate can be directly inserted into the holes during later assembly, and reliable connection is formed; the sleeve pipe hole is formed in the web plate position of the stainless steel I-beam and used for ensuring the reliable connection of the wood beams on the two sides of the web plate of the stainless steel I-beam, so that the section rigidity and the stability of the stainless steel I-beam are improved; meanwhile, screw holes are formed in the lower flange of the stainless steel I-beam at a certain interval to ensure that the transverse wood beam is tightly connected with the stainless steel I-beam; considering that the stainless steel I-beam is connected with the H-shaped stainless steel column through a bolt, web plates at two ends of the stainless steel I-beam are provided with holes for hexagonal bolt connection of column-beam joints and inner hexagonal bolt connection of transverse wood beams.
(6) Prefabricating a combined beam plate: the method comprises the following steps of pouring a manufactured wood board as a template in a precast yard, enabling a sawtooth surface of the wood board to be in contact with concrete, arranging one end, provided with a wing plate, of T-shaped stainless steel in the template, arranging longitudinal steel bars in the template, positioned at the top, the bottom and the shape mutation positions of a combined beam board, and bending and anchoring the longitudinal steel bars at the two ends of the beam; the transverse steel bars penetrate through the reserved steel bar holes of the T-shaped stainless steel plate and are arranged along the direction perpendicular to the longitudinal steel bars to form a double-limb stirrup, so that the longitudinal steel bars and the transverse steel bars jointly form a steel bar framework of the combined beam slab; and then concrete is poured, after the reinforced concrete is hardened, the wood board at the bottom can be used as a floor in use, the demoulding process is omitted, and the combined beam board with the wood floor is formed.
(7) Prefabricating a wood-light reinforced concrete composite board: the manufactured wood board is used as a template, longitudinal steel bars are arranged in the template and positioned at the top, the bottom and the shape mutation positions of the combined board, the longitudinal steel bars are full-length and are bent and anchored at the two ends of the beam; arranging transverse steel bars along the direction vertical to the longitudinal steel bars to form a double-limb stirrup, wherein the longitudinal and transverse steel bars jointly form a steel bar framework; meanwhile, a row of screws are embedded at the bottoms of the two ends of the template respectively, so that the connection is convenient to carry out during the assembly of the subsequent combined plate; and then pouring concrete, and waiting for the reinforced concrete slab to be hardened, so as to form the composite slab. The cross section of the composite slab has two forms of a slab I and a slab II, and the slab I, the slab II and the composite beam are flexibly combined, so that the requirements of different spans and structural arrangement can be met, and the engineering adaptability is strong.
(8) Installing a primary beam-column supporting system: during on-site construction, the prefabricated combined beam plate, the longitudinal wood beam, the L-shaped connecting steel plate and the like are transported to a construction site from a prefabrication site, and can be assembled on the site. L-shaped connecting steel plates are arranged at two ends of the T-shaped stainless steel of the combined beam plate and are connected with the web plate of the H-shaped stainless steel column through stud bolts; and the left L-shaped stainless steel and the right L-shaped stainless steel are arranged on two sides of a web plate of the T-shaped stainless steel through the stud bolts to form a combined I-shaped stainless steel beam. L-shaped connecting steel plates are respectively arranged on two sides of webs at two ends of the stainless steel I-beam and are connected with wing plates of the H-shaped stainless steel column through the L-shaped connecting steel plates; forming a preliminary beam column support system.
(9) Installing a stainless steel-wood-lightweight concrete composite beam: embedding the longitudinal wood beam into two sides of a web plate of the combined I-shaped stainless steel beam, aligning sleeve holes on the longitudinal wood beam with sleeve holes 120 of the web plate of the combined I-shaped stainless steel beam, putting a transverse internal thread sleeve into the longitudinal wood beam, and screwing inner hexagon bolts into the transverse internal thread sleeve at two ends of the longitudinal wood beam; and finally, drilling a screw into the longitudinal wood beam through a screw hole on the lower flange of the combined I-shaped stainless steel beam so that the combined I-shaped stainless steel beam and the longitudinal wood beam are tightly connected to form the steel-wood-concrete combined beam.
(10) Installing a stainless steel-wood composite beam: embedding transverse wood beams into two sides of a web plate of the stainless steel I-beam, aligning sleeve holes in the transverse wood beams with sleeve holes in the web plate of the stainless steel I-beam, putting longitudinal internal thread sleeves in the transverse wood beams, and screwing inner hexagon bolts into the longitudinal internal thread sleeves at two ends of the transverse wood beams; and finally, the screw penetrates through the screw hole on the lower flange of the stainless steel I-beam and is drilled into the transverse wood beam, so that the stainless steel I-beam and the transverse wood beam are tightly connected to form the stainless steel-wood combined beam.
(11) Installing the wood-light reinforced concrete composite board: high-strength waterproof colloid is coated on the interface of the wood-lightweight reinforced concrete composite board and the interface of the adjacent composite beam board, so that the reliable adhesion of the wood-lightweight reinforced concrete composite board and the adjacent composite beam board after assembly is ensured, and the assembled beam boards can be stressed together and cooperatively deformed. And paving a wood-lightweight reinforced concrete composite board between the composite beam boards of the two stainless steel-wood-lightweight concrete composite beams, wherein two ends of the wood-lightweight reinforced concrete composite board are supported on the stainless steel-wood composite beams, and screws pre-embedded on the wood-lightweight reinforced concrete composite board extend into the reserved screw sleeves of the corresponding stainless steel-wood composite beams, so that the wood-lightweight reinforced concrete composite board is fixed on the stainless steel-wood composite beams.
It will be apparent to those skilled in the art that various modifications, changes, substitutions and variations can be made in the present invention without departing from the spirit and scope of the invention.
Claims (8)
1. An easily-disassembled and assembled stainless steel-wood-lightweight concrete composite beam plate system is characterized by comprising a stainless steel-wood-lightweight concrete composite beam which is used for being arranged between two adjacent H-shaped stainless steel columns along a longitudinal bridge direction, a stainless steel-wood composite beam is arranged between two adjacent H-shaped stainless steel columns along a transverse bridge direction, a wood-lightweight reinforced concrete composite plate is arranged between the two stainless steel-wood-lightweight concrete composite beams along the transverse bridge direction, and two ends of the wood-lightweight reinforced concrete composite plate are respectively arranged at the upper sides of the corresponding stainless steel-wood composite beams; the stainless steel-wood-lightweight concrete combined beam comprises a combined I-shaped stainless steel beam, a combined beam plate with a wood floor is longitudinally cast on the upper part of the combined I-shaped stainless steel beam, longitudinal wood beams are respectively installed between two sides of a lower flange of the combined I-shaped stainless steel beam and the bottom surface of the combined beam plate, and two ends of the combined I-shaped stainless steel beam are connected with corresponding H-shaped stainless steel columns; the combined beam slab comprises a steel reinforcement framework, concrete is poured around the steel reinforcement framework, wood boards are installed on the top surface and the side surfaces of the concrete, the matching surface of the wood boards and the concrete is in a saw-tooth shape, and the upper surfaces of the wood boards are flat surfaces; the upper surface of the composite beam plate is flush with the upper surface of the wood-lightweight reinforced concrete composite plate.
2. The easy-to-assemble and disassemble stainless steel-wood-lightweight concrete composite beam slab system according to claim 1, wherein the combined I-shaped stainless steel beam comprises T-shaped stainless steel with the upper part embedded in the composite beam slab, and left L-shaped stainless steel and right L-shaped stainless steel which are matched with the T-shaped stainless steel beam to form the I-shaped stainless steel beam are correspondingly installed on two sides of the lower part of the T-shaped stainless steel.
3. The easy-to-assemble and disassemble stainless steel-wood-lightweight concrete composite beam and slab system according to claim 2, wherein transverse internal thread sleeves penetrating through the T-shaped stainless steel, the left L-shaped stainless steel and the right L-shaped stainless steel are longitudinally arranged on the web plate of the combined I-shaped stainless steel beam at intervals, two ends of each transverse internal thread sleeve extend into the longitudinal wood beam, bolts in threaded connection with the transverse internal thread sleeves are arranged on the longitudinal wood beam, screw holes are arranged on the lower flanges of the left L-shaped stainless steel beam and the right L-shaped stainless steel beam at intervals, and screws connected with the longitudinal wood beam are arranged on the lower flanges of the left L-shaped stainless steel beam and the right L-shaped stainless steel beam.
4. The easy-to-assemble and disassemble stainless steel-wood-lightweight concrete composite beam and slab system according to claim 1, wherein the reinforcement cage comprises longitudinal reinforcements arranged at the top and bottom of the composite beam and at the position of sudden change of shape, stirrups are wrapped outside the longitudinal reinforcements, and transverse reinforcements perpendicular to the longitudinal reinforcements penetrate through the upper part of the web plate of the combined I-shaped stainless steel beam at intervals along the longitudinal direction.
5. The easy-to-assemble and disassemble stainless steel-wood-lightweight concrete composite beam slab system according to claim 1, 2, 3 or 4, wherein two end parts of the combined I-shaped stainless steel beam extend out of the composite beam slab, two side surfaces of a web plate of the extending end are respectively fixed with an L-shaped connecting steel plate through bolts, and the L-shaped connecting steel plate is fixedly connected with a web plate of the H-shaped stainless steel column through bolts; and the two ends of the longitudinal wood beam are respectively provided with a convex part which extends upwards to the bottom surface of the upper flange of the combined I-shaped stainless steel beam and wraps the end part of the combined beam plate.
6. The easy-to-assemble and disassemble stainless steel-wood-lightweight concrete composite beam and plate system according to claim 1, wherein the stainless steel-wood composite beam comprises a stainless steel I-beam, transverse wood beams are installed on two sides of a web plate of the stainless steel I-beam, longitudinal internal thread sleeves penetrate through the web plate of the stainless steel I-beam at intervals along the transverse direction, bolts in threaded connection with the longitudinal internal thread sleeves are arranged on the transverse wood beams, screw holes are arranged on the lower flange of the stainless steel I-beam at intervals, and screws connected with the transverse wood beams are installed on the lower flange of the stainless steel I-beam; and both ends of the stainless steel I-beam are connected with wing plates of the H-shaped stainless steel column through L-shaped connecting steel plates.
7. The easy-to-assemble and disassemble stainless steel-wood-lightweight concrete composite beam plate system according to claim 1 or 6, wherein the wood-lightweight reinforced concrete composite beam plate is divided into two forms of a plate I and a plate II, wherein the upper part of one side of the plate I is provided with a first convex part, the lower part of the other side of the plate I is provided with a second convex part, the plate I is provided with a reinforcement cage, the reinforcement cage is poured with concrete, the top surface and the side surface of the concrete are provided with wood plates, the matching surfaces of the wood plates and the concrete are zigzag, and the upper surfaces of the wood plates are flat surfaces; screws are pre-embedded at the lower sides of the two ends of the first plate and the second plate at intervals and extend into reserved screw sleeves arranged on the stainless steel-wood composite beam.
8. A construction method applied to the easy-to-assemble and disassemble stainless steel-wood-lightweight concrete combined beam-slab system of claim 2 is characterized by comprising the following steps of:
(1) prefabricating a combined beam plate: pouring a manufactured wood board as a template in a prefabricated field, arranging one end, provided with a wing plate, of the T-shaped stainless steel in the template, placing a steel reinforcement framework in the template, enabling transverse steel bars in the steel reinforcement framework to penetrate through reserved steel bar holes of the T-shaped stainless steel plate, pouring concrete, and not demolding after the concrete is hardened;
(2) prefabricating a wood-light reinforced concrete composite board: taking the manufactured wood board as a template, arranging a reinforcement cage in the template, embedding a row of screws at two ends of the template, pouring concrete, and not demoulding after the concrete is hardened;
(3) installing a primary beam-column supporting system: installing L-shaped connecting steel plates at two ends of the T-shaped stainless steel of the combined beam plate, and connecting the L-shaped connecting steel plates with webs of H-shaped stainless steel columns; mounting the left L-shaped stainless steel and the right L-shaped stainless steel on two sides of a web plate of the T-shaped stainless steel; l-shaped connecting steel plates are respectively arranged on two sides of webs at two ends of the stainless steel I-beam and connected with wing plates of the H-shaped stainless steel column through the L-shaped connecting steel plates to form a primary beam-column supporting system;
(4) installing the stainless steel-wood-lightweight concrete composite beam and the stainless steel-wood composite beam: installing longitudinal wood beams on two sides of a web plate of the combined I-shaped stainless steel beam to form a stainless steel-wood-concrete combined beam; installing transverse wood beams on two sides of a web plate of the stainless steel I-beam to form a stainless steel-wood combined beam;
(5) installing the wood-light reinforced concrete composite board: coating high-strength waterproof colloid on the interface of the wood-lightweight reinforced concrete composite slab and the interface of the composite beam slab, laying the wood-lightweight reinforced concrete composite slab between the composite beam slabs of the two stainless steel-wood-lightweight reinforced concrete composite beams, supporting two ends of the wood-lightweight reinforced concrete composite slab on the stainless steel-wood composite beams, and extending screws on the wood-lightweight reinforced concrete composite slab into reserved screw sleeves of the stainless steel-wood composite beams.
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| 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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| JPH10102657A (en) * | 1996-09-30 | 1998-04-21 | Nkk Corp | Concrete casting method in steel framed concrete composite beam |
| CN201062388Y (en) * | 2007-04-22 | 2008-05-21 | 刘东轩 | Demoding-free light aggregate concrete cast-in-situs wall |
| CN108316530A (en) * | 2018-01-11 | 2018-07-24 | 水利部交通运输部国家能源局南京水利科学研究院 | The assembled steel reinforced concrete composite floor and installation method connected using self-locking |
| 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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