CN111173122B - A floor structure and combined structure residential system thereof - Google Patents
A floor structure and combined structure residential system thereof Download PDFInfo
- Publication number
- CN111173122B CN111173122B CN202010086493.0A CN202010086493A CN111173122B CN 111173122 B CN111173122 B CN 111173122B CN 202010086493 A CN202010086493 A CN 202010086493A CN 111173122 B CN111173122 B CN 111173122B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 269
- 239000010959 steel Substances 0.000 claims abstract description 269
- 239000004567 concrete Substances 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims description 56
- 229910052751 metal Inorganic materials 0.000 claims description 56
- 238000007789 sealing Methods 0.000 claims description 32
- 230000002787 reinforcement Effects 0.000 claims description 31
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 24
- 239000012774 insulation material Substances 0.000 claims description 18
- 230000002265 prevention Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 45
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
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- 230000000452 restraining effect Effects 0.000 description 15
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- 238000012546 transfer Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 9
- 229910000746 Structural steel Inorganic materials 0.000 description 8
- 238000005336 cracking Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 8
- 238000009413 insulation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
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- 238000009415 formwork Methods 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
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- 229910045601 alloy Inorganic materials 0.000 description 4
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- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000011490 mineral wool Substances 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
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- 229920002223 polystyrene Polymers 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
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- 230000001133 acceleration Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000011178 precast concrete Substances 0.000 description 1
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Classifications
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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
-
- 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
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Bridges Or Land Bridges (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The application relates to a building cover structure and a residential system with a combined structure thereof, wherein the building cover structure comprises a floor slab and a cantilever slab; the steel bar framework comprises a plurality of connecting horizontal bars arranged along the length direction of the splicing surface, the connecting ring bars are parallel to the floor ring bars, concrete is poured between the connecting ring bars and the floor ring bars, and the floor and the cantilever plates are connected through cold and hot bridge preventing nodes. The application greatly improves the site construction speed, reduces the construction difficulty, has simple construction process, prevents ribs from being arranged on four sides of the precast slab, is convenient for factory automatic batch production, greatly reduces the production cost, and has good stress performance, strong integrity and strong structural integrity in an assembled integral mode. The construction is assembled on site, the construction efficiency is high, the dense rib structure greatly reduces the dead weight of the floor and the consumption of concrete, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a building cover structure and a residential system with a combined structure.
Background
The cast-in-situ floor slab has the advantages of good structural integrity and good earthquake resistance, but is labor-consuming, needs a large number of templates, has long construction period and is difficult to realize industrial production. The prefabricated floor is easy to realize industrialization of building components, the production of the components is not limited by seasons and climates, the quality of the components can be improved, the construction speed is high, a large number of templates and supports can be saved, but the integrity is poor, and the prefabricated floor is unfavorable for earthquake resistance and poor in impermeability. The laminated slab can combine the advantages of the cast-in-situ slab and the precast slab together, and has the advantages of high construction speed, short construction period, light weight of precast components, good integrity, template saving, lower requirement on hoisting capacity and the like.
The truss reinforced concrete superimposed sheet is formed by casting a reinforced truss and a concrete bottom plate into a whole to form a prefabricated part, and casting superimposed layer concrete to form an integrally stressed floor after site installation is completed. The truss reinforced concrete superimposed sheet has the advantages of partial assembly, partial on-site formwork reduction, consideration of bidirectional plate use, acceleration of overall construction progress and the like. However, the truss reinforced concrete superimposed sheet has the defects and shortcomings of insufficient assembly degree, troublesome transportation of the reinforced truss plates, easy damage, thicker total floor slab thickness, difficult site construction of the reinforced truss plates and the like. The steel bar truss plates are connected with each other and the cast-in-situ beam laterally, and the steel bar truss plates need to be pre-embedded with anchoring steel bars in advance in the early stage of manufacturing, and are commonly called as 'Huzi ribs'. However, in the transportation and construction process, the 'Huzi ribs' may be damaged or deformed, which brings trouble to site construction, meanwhile, the Huzi ribs extending from four sides of the steel bar truss plates are difficult to automatically produce in factories, the production efficiency is low, the cost is high, the integral joint structure between the steel bar truss plates needs site formwork, the working procedure is complex, the construction is difficult, and the construction efficiency of the steel bar truss plates is reduced.
Therefore, developing a novel precast concrete floor system structure and a construction method thereof are one of key technical problems to be solved urgently in the current fabricated steel structure building industry.
Disclosure of Invention
The invention aims to provide a building cover structure and a building system with a combined structure, which are used for solving the technical problems of low production efficiency of four-side reinforcement and complex construction of an integral joint field in the prior art.
In order to solve the technical problems, the invention provides a floor structure, which comprises a floor slab and a cantilever plate, wherein in a horizontal projection plane, the floor slab is arranged indoors, and the cantilever plate is arranged outdoors;
The two adjacent floor slabs are arranged at intervals, a steel reinforcement framework is arranged in the interval, one end of each floor slab, which is located on a splicing surface, is provided with a mounting notch, the bottom of each mounting notch is sequentially and vertically fixed with floor slab ring ribs at intervals along the length direction of the splicing surface of each floor slab, each steel reinforcement framework comprises a connecting horizontal rib and a plurality of connecting ring ribs, the connecting ring ribs are arranged along the length direction of the splicing surface and are fixed with the connecting horizontal ribs, the connecting ring ribs are parallel to the floor slab ring ribs, the connecting ring ribs are staggered with the plurality of floor slab ring ribs on the two floor slabs, and concrete is poured between the connecting ring ribs and the floor slab ring ribs.
The slab is connected with the cantilever plates through cold and hot bridge prevention nodes, the cold and hot bridge prevention nodes comprise sandwich plates, a first steel bar backing plate and a second steel bar backing plate, the sandwich plates comprise first metal panels, second metal panels, a plurality of node connectors, annular sealing plates and heat insulation materials, the annular sealing plates are fixedly connected between the first metal panels and the second metal panels which are oppositely arranged and surround the first metal panels and the second metal panels to form a sealed cavity, one end of each node connector is fixedly connected with the first metal panels, the other end of each node connector is fixedly connected with the second metal panels and arranged in the sealed cavity, and the heat insulation materials are filled in the sealed cavity;
The first steel bar backing plate is welded on the surface of one side of the first metal panel, which is away from the second metal panel, and a plurality of floor steel bars extending to the indoor side and entering the floor slab are welded on the first steel bar backing plate;
the second reinforcing steel bar backing plates are welded on the surface of one side, deviating from the first metal panel, of the second metal panel, and a plurality of cantilever plate reinforcing steel bars extending to the outdoor side and entering the cantilever plates are welded on the second reinforcing steel bar backing plates.
Wherein, the cantilever plate can be a member such as a cantilever balcony, a cantilever air-conditioning plate, a flashing plate and the like.
Preferably, the node connecting piece is a connecting pipe, a connecting rod, a honeycomb plate or a corrugated plate;
When the node connecting piece is a connecting pipe, the connecting pipe is filled with heat insulation materials.
Preferably, the node connectors and the annular seal plates are made of a fibre reinforced composite material or plastic. And preferably, the heat insulating material is rock wool or foamed polyurethane.
Preferably, the first metal panel is a carbon structural steel plate, a low-alloy high-strength structural steel plate or a stainless steel plate, and the second metal panel is a carbon structural steel plate, a low-alloy high-strength structural steel plate or a stainless steel plate.
The annular sealing plates comprise a bottom sealing plate, a first side sealing plate, a top sealing plate and a second side sealing plate which are sequentially connected end to end along the circumferential direction, the bottom sealing plate and the top sealing plate are oppositely arranged, the first side sealing plate and the second side sealing plate are oppositely arranged, and the steel bars are screw-thread steel bars.
During construction, the first metal panel, the second metal panel, the plurality of node connecting pieces and the annular sealing plate are fixedly connected together, and process holes are reserved on the annular sealing plate;
Respectively welding a steel bar backing plate on the first metal panel and the second metal panel;
Welding steel bars on each steel bar backing plate;
Placing a reinforcing steel bar positioned at one side of the first metal panel or the second metal panel into a template (a floor slab or a cantilever slab template);
Binding steel bars on the steel bars in the template to form a steel bar framework;
pouring concrete into the template;
filling heat insulation materials into the sealed cavity through the process holes, and extruding and compacting;
and plugging the process holes to form prefabricated parts with cold and hot bridge preventing nodes for the floor slabs.
The cold and hot bridge prevention node of the floor structure has the characteristics of simple construction and small field workload, the heat insulation materials such as rock wool and foaming polyurethane are filled in the middle of the sandwich plate, meanwhile, the heat insulation materials are embedded into the sealing cavity of the sandwich plate, so that the sandwich plate is prevented from forming a heat bridge, namely, a bridge-breaking structure is formed between the floor slabs and the cantilever slabs at the indoor side and the outdoor side, the heat insulation effect is good, the durability of the heat insulation materials is good, the falling risk is avoided, the steel bars are welded on the metal panel through the steel bar backing plate, and a plurality of node connecting pieces are fixed between the metal panels, so that the cold and hot bridge prevention node is high in structural strength and good in stress performance.
The floor slab comprises a bottom plate and a light filling body positioned on the bottom plate, wherein bottom horizontal ribs perpendicular to the connecting horizontal ribs are arranged in the bottom plate, and one end of each bottom horizontal rib positioned on the splicing surface is bent to form a ring shape towards the other end so as to form the floor slab ring rib.
The light filling body comprises a bottom plate, a light filling body, a plurality of floor slabs, a plurality of steel bar trusses, a plurality of steel bar meshes, a plurality of steel bar girders and a plurality of steel bar meshes, wherein the steel bar trusses are arranged at one end, far away from a splicing surface, of each bottom plate, the steel bar meshes are arranged at the upper ends of the two light filling bodies, the two ends of each steel bar mesh are respectively connected with the steel bar trusses of the two floor slabs, and concrete is poured between the steel bar trusses and each steel bar mesh.
Further, first lap joint steel bars are arranged at the joint of the two floors, and two ends of each first lap joint steel bar are respectively positioned on the bottom plates of the two floors.
Furthermore, an I-shaped steel beam is arranged at the joint of the two floors, the web plates of the steel beam are vertically arranged, and the connecting ring ribs are fixed with the web plates of the steel beam.
Further, steel plates are sequentially fixed on two sides of the steel beam web at intervals along the length direction of the steel beam web, the steel plates on two sides of the steel beam web correspond to each other one by one, through holes are formed in the steel plates, and the connecting ring ribs are arranged in the through holes of the two steel plates in a penetrating mode.
Further, the lower end of the connecting ring rib is provided with an opening, and two ends of the opening are respectively bent downwards and vertically penetrate through the perforations at the two ends of the steel plate.
The bottom plate is provided with a plurality of support grooves, each support groove is formed in the bottom of one end of the bottom plate, which is located on the splicing surface, of the corresponding steel beam, and two ends of the corresponding steel beam lower end flange are located in the corresponding support grooves of the two bottom plates respectively.
Further, the steel beam is sequentially provided with a plurality of through holes along the length direction, second lap joint steel bars are arranged in the through holes in a penetrating mode, and two ends of the second lap joint steel bars are respectively located in the two floors.
Further, the steel beam comprises an anti-cracking steel bar, one end of the anti-cracking steel bar is positioned on the lower flange of the steel beam, and the other end of the anti-cracking steel bar is positioned in the bottom plate.
Further, a plurality of pegs are sequentially arranged on the upper flange of the steel beam at intervals along the length direction of the upper flange of the steel beam.
Further, the lightweight filler comprises polystyrene board and plastic formwork.
Further, a steel bar truss is fixed on one side of the bottom plate, a connecting ring rib is fixed on the opposite side of the bottom plate, and a light filling body is placed between the steel bar truss and the connecting ring rib on the bottom plate so as to form the floor slab.
Further, binding top steel bars on the tops of the two light filling bodies to form a steel bar net, enabling two ends of the steel bar net to be overlapped on steel bar trusses of the two floors, and pouring concrete to the steel bar net and the steel bar trusses.
According to the floor structure provided by the invention, the floor ring ribs are arranged at the mounting openings, and when in splicing, the connecting ring ribs of the steel bar framework and the floor ring ribs are arranged in a staggered manner, and concrete is poured, so that the spliced nodes can be connected and fixed. The stress of the floor slab at one side is transmitted to the steel reinforcement framework through the floor slab ring rib at the other side, and the steel reinforcement framework transmits the stress to the connecting ring rib of the floor slab at the other side, and the floor slab at the other side is stressed. The invention has the advantages of no formwork construction between structural slab joints, high site construction speed, reduced construction difficulty, simple construction process, no need of arranging the beard ribs on the floor slab, no ribs on four sides of the precast slab, convenient factory automation batch production, great reduction of production cost, good stress performance of the floor slab, strong integrity, good stress performance of the dense rib structure and strong structural integrity of the assembled integral mode. And the construction is assembled on site, and the construction efficiency is high. The dense rib hollow floor slab is formed by filling light materials, so that the dead weight of the floor slab and the concrete consumption are greatly reduced, and the cost is reduced.
The invention also discloses a combined structure house system with the floor structure, which comprises a steel beam, a column body, a shear wall and the floor.
The cylinder comprises a round steel pipe and a plurality of T-shaped steel, wherein concrete is poured in the round steel pipe, the T-shaped steel is arranged at intervals along the circumferential direction of the round steel pipe, one end, opposite to a web plate and a flange of the T-shaped steel, of the T-shaped steel is fixedly connected with the outer wall of the round steel pipe, the web plate of the T-shaped steel is located on a diameter extension line of the round steel pipe, and bolt holes are formed in the flange of the T-shaped steel.
Further, the number of the T-shaped steel is two, and the webs of the two T-shaped steel are positioned on the same diameter of the round steel pipe to form a straight line.
Further, the number of the T-shaped steel is more than 3, and the T-shaped steel is uniformly distributed at intervals in the circumferential direction of the round steel pipe.
Further, the number of the T-shaped steel is two, the webs of the two T-shaped steel are vertical to form an L shape, or the number of the T-shaped steel is three, the webs of the three T-shaped steel are arranged in a T shape, or the number of the T-shaped steel is four, and the webs of the four T-shaped steel are arranged in a cross shape.
Further, a first circular exhaust hole is formed in the position, close to the outer wall, of the round steel pipe along the axial direction of the round steel pipe, and the diameter of the first circular exhaust hole is larger than or equal to 12mm.
The cylinder provided by the invention consists of the round steel pipe and a plurality of T-shaped steel, the round steel pipe concrete is positioned near the neutralization shaft and mainly bears the axial force, the advantage of good compressive mechanical property of the round steel pipe concrete shaft is fully exerted, the T-shaped steel is arranged far away from the neutralization shaft, the force arm is increased, and the bending resistance bearing capacity is greatly improved, so that the bending resistance mechanical property is greatly improved. Meanwhile, the T-shaped steel is positioned on the outer side and is convenient to connect, so that all-bolt connection of beam column joints, columns and column vertical splicing joints is realized, namely, columns and steel beams as well as upper and lower columns are connected through bolts. The steel column can be prevented from being exposed out of the wall body during connection, and the purpose of hiding the column in the wall body is achieved.
The steel beam is characterized by further comprising a constraint support piece, wherein two ends of the constraint support piece are fixedly connected with the middle part of the column body and the middle part of the steel beam respectively;
The constraint support comprises an outer constraint sleeve, an inner core, a constraint ring and a constraint rod, wherein the inner core, the constraint ring and the constraint rod are all arranged in the outer constraint sleeve;
The restraining rod and the inner core are arranged along the length direction of the outer restraining sleeve, the restraining ring is fixed with the outer restraining sleeve and sleeved outside the inner core and the restraining rod, so that the inner core is fixed with the restraining rod.
Further, the inner core is in a strip shape, the restraining rods are arranged on two sides of the inner core, or the inner core is in a strip shape with a cross-shaped section, and the restraining rods are arranged at four intervals of the cross shape.
Further, the constraint ring comprises a plurality of annular constraint steel bars sleeved outside the inner core and the constraint rod, and the annular constraint steel bars are sequentially arranged at intervals along the length direction of the constraint rod.
Further, the constraint ring is an annular constraint steel bar spirally wound outside the inner core. Wherein, the annular constraint steel bar is preferably a smooth round steel bar.
Further, the constraint rod is a steel rod, and the steel rod is welded and fixed with the smooth round steel bar.
Further, an anti-friction layer is provided between the restraining bar and the inner core to reduce frictional resistance between the restraining bar and the inner core.
Further, the outer constraint sleeve is made of mortar, a reinforcing structure is arranged in the outer constraint sleeve, the reinforcing structure is a steel wire mesh or a glass fiber mesh, and the steel wire mesh or the glass fiber mesh is arranged along the circumferential direction of the outer constraint sleeve.
Further, connecting ends extending out of the outer constraint sleeve are respectively arranged at two ends of the inner core, the width of each connecting end is larger than the width (the middle width of the inner core) of the inner core in the outer constraint sleeve, and mounting holes are formed in the connecting ends. The constraint support piece is respectively connected with the steel beam and the column body through the mounting holes on the connecting ends.
The buckling restrained brace provided by the invention has the advantages that the restraint rod and the restraint ring restrain the buckling of the inner core and restrict the local buckling of the inner core, so that the performance of the core plate can be fully exerted, meanwhile, the restraint ring is only required to be sleeved outside the inner core and the restraint rod for fixing during processing, the requirement is low, and special factory processing is not required during the operation, so that the processing is simple and convenient, and the operation is easy. The restraint pole adopts the bar iron, and the inner core adopts the steel core, and the restraint ring adopts smooth round bar iron, and is the common material, and is with low costs, and economic nature is good. The external constraint sleeve is made of mortar, so that the buckling restrained brace is prevented from being corroded, and maintenance is avoided during the service life.
The T-shaped steel flange is arranged on the outer side of the cylinder, the T-shaped steel flange is arranged on the outer side of the cylinder in parallel with the wall surface of the wall, an outer anti-corrosion layer is coated on the outer end face of the outer side flange, and a plurality of layers of glass wool plates are coated on the outer side of the anti-corrosion layer of the outer side flange and used for blocking the cylinder to serve as a heat bridge to transfer heat flow between the inner side and the outer side of the wall.
The heat bridge effect at the column body is effectively eliminated, the overall heat insulation performance of the building is improved, the influence of external temperature change on the outer anti-corrosion layer can be effectively weakened by the glass wool boards at a plurality of layers, and the effective anti-corrosion period of the anti-corrosion layer is improved.
Further, a T-shaped steel flange close to the indoor side in the column body is an inner flange, the inner flange is arranged in parallel with the wall surface of the wall body, the outer end face of the inner flange is coated with an inner anti-corrosion layer, and no heat insulation material is laid outside the inner anti-corrosion layer of the inner flange.
The indoor temperature and humidity change is small and stable, so that the inner anti-corrosion layer can be kept effective for a long time, the thermal bridge effect of the cylinder is utilized, and the blocking of the glass wool board outside the outer flange to the thermal bridge is combined, so that the temperature change fluctuation of the outer anti-corrosion layer of the outer flange is greatly weakened, the effective service life of the outer anti-corrosion layer is prolonged more effectively, and the anti-corrosion performance of the cylinder is improved as a whole.
Drawings
Fig. 1 is a schematic structural diagram of a building cover structure according to embodiment 1 of the present invention;
FIG. 2 is a 1-1 side cross-sectional view of the floor structure shown in FIG. 1;
FIG. 3 is a 2-2 side cross-sectional view of the floor structure shown in FIG. 1;
FIG. 4 is a 3-3 side cross-sectional view of the floor structure shown in FIG. 1;
fig. 5 is a schematic structural diagram of a reinforcement cage according to embodiment 1 of the present invention;
fig. 6 is another structural schematic diagram of the reinforcement cage of fig. 5;
FIG. 7 is a schematic view of the structure of the connection part of the floor slab in example 1 after concrete is poured;
FIG. 8 is a schematic view of another embodiment of a floor structure according to example 1;
FIG. 9 is a 5-5 side cross-sectional view of the floor structure shown in FIG. 8;
FIG. 10 is a 6-6 side cross-sectional view of the floor structure shown in FIG. 8;
FIG. 11 is a 7-7 side cross-sectional view of the floor structure shown in FIG. 8;
FIG. 12 is a schematic view of the floor structure of FIG. 9 after concrete has been poured;
FIG. 13 is a schematic view of the floor structure of FIG. 10 after concrete has been poured;
Fig. 14 is a schematic structural view of a steel beam according to an embodiment of the present invention;
FIG. 15 is another schematic view of the steel beam of FIG. 14;
FIG. 16 is a first schematic view of the building roof structure according to embodiment 1;
FIG. 17 is a second schematic diagram illustrating the construction of the floor structure of embodiment 1;
FIG. 18 is a third schematic view of the floor structure of the embodiment 1;
FIG. 19 is a fourth schematic view of the floor structure of embodiment 1;
FIG. 20 is a fifth schematic view of the building roof structure according to the embodiment 1;
FIG. 21 is a sixth schematic view of the building roof structure according to embodiment 1;
Fig. 22 is a schematic structural diagram of a floor system in embodiment 1 of the present invention;
FIG. 23 is a schematic diagram of a cold/hot bridge prevention node in embodiment 1 of the present invention;
FIG. 24 is a schematic view showing the structure of an annular seal plate in embodiment 1 of the present invention;
FIG. 25 is a schematic layout of constraint supports in example 2;
FIG. 26 is a cross-sectional view of AA in FIG. 25;
Fig. 27 is a side view of the cross-shaped core 62 of example 2;
FIG. 28 is a cross-sectional view of FF of FIG. 26;
fig. 29 is a schematic structural view of a column in line according to embodiment 3 of the present invention;
fig. 30 is a schematic structural view of a cross-shaped column according to embodiment 3 of the present invention;
FIG. 31 is a schematic view of an L-shaped column according to embodiment 3 of the present invention;
FIG. 32 is a schematic view of a T-shaped column according to embodiment 3 of the present invention;
fig. 33 is a schematic diagram of a broken bridge structure of a column in embodiment 4 of the present invention.
Detailed Description
The invention is further illustrated with reference to specific embodiments.
Example 1
The floor structure provided by the embodiment comprises a floor slab and a cantilever plate, wherein the floor slab is arranged indoors in a horizontal projection plane, and the cantilever plate is arranged outdoors.
The building block comprises a steel reinforcement framework and two floors which are arranged at intervals, wherein one end of each floor, which is located on a splicing surface, is provided with a mounting opening, the bottom of each mounting opening is sequentially and vertically fixed with floor annular ribs 4 at intervals along the length direction of the splicing surface of the floor, each steel reinforcement framework comprises a connecting horizontal rib 9 and a plurality of connecting annular ribs 5 which are arranged along the length direction of the splicing surface and are fixed with the connecting horizontal ribs 9, each connecting annular rib 5 is parallel to each floor annular rib 4, the plurality of connecting annular ribs 5 are staggered with the plurality of floor annular ribs 4 on the two floors, and concrete 12 is poured between each connecting annular rib 5 and each floor annular rib 4.
In the floor slab floor structure provided by the embodiment, the floor slab annular ribs 4 are arranged at the installation openings, and when in splicing, the connecting annular ribs 5 of the steel reinforcement framework and the floor slab annular ribs 4 are arranged in a staggered manner, and the splicing node can be connected and fixed by pouring concrete 12. The stress of one side of the floor slab is transmitted to the steel reinforcement framework through the floor slab ring rib 4 of the side, and the steel reinforcement framework transmits the stress to the connecting ring rib 5 of the other side of the floor slab, and the other side of the floor slab is stressed. The invention has the advantages of no formwork construction between structural slab joints, high site construction speed, reduced construction difficulty, simple construction process, no need of arranging the beard ribs on the floor slab, no ribs on four sides of the precast slab, convenient factory automation batch production, great reduction of production cost, good stress performance of the floor slab, strong integrity, good stress performance of the dense rib structure and strong structural integrity of the assembled integral mode. And the construction is assembled on site, and the construction efficiency is high.
The annular rib refers to a structure similar to an annular shape, and the annular rib can be closed or provided with an opening.
Preferably, the floor slab ring ribs 4 are closed ring ribs.
Preferably, the number of the connecting horizontal ribs 9 is multiple, and the connecting horizontal ribs 9 are sequentially arranged at intervals along the circumferential direction of the connecting ring rib 5, so that the connection strength with the connecting ring rib 5 and the connection strength at the splicing node are improved.
As shown in fig. 1-7, the floor slab further comprises a bottom plate 2 and a light filling body 1 positioned on the bottom plate 2, wherein a bottom horizontal rib 3 vertical to a connecting horizontal rib 9 is arranged in the bottom plate 2, and one end of the bottom horizontal rib 3 positioned on a splicing surface is bent into a ring shape towards the other end so as to form a floor slab ring rib 4. In the embodiment, the bottom horizontal ribs 3 are arranged in the bottom plate 2, one end of each bottom horizontal rib 3 is directly bent to form the floor slab ring rib 4, and the processing is convenient.
Preferably, a bottom reinforcement perpendicular to the bottom horizontal bar 3 is provided in the bottom plate 2, which is parallel to the connecting horizontal ring bar.
The light filling body 1 of the invention is formed by adopting light materials in industry, such as polystyrene plates, plastic mould shells and the like.
Further, one end of each bottom plate 2 far away from the splicing surface is provided with a steel bar truss 7, the upper ends of the two light filling bodies 1 are provided with steel bar meshes 6, two ends of each steel bar mesh 6 are respectively connected with the steel bar trusses 7 of the two floorslabs, and concrete 12 is poured between the steel bar trusses 7 and the steel bar meshes 6. One side of the bottom plate 2 is provided with a steel bar truss 7, the other side is provided with a floor slab ring rib 4, the top is provided with a steel bar net 6, and concrete 12 is poured into the steel bar truss 7, the floor slab ring rib 4 and the steel bar net 6 to fix the two floor slabs, so that the connection strength can be further enhanced.
Specifically, the reinforcing mesh 6 on the top of the bottom plate 2 is formed by binding and fixing a plurality of transverse ribs 11 and longitudinal ribs 10 which are perpendicular to each other. The longitudinal ribs 10 are parallel to the connecting horizontal ribs 9, and the transverse ribs 11 are main stress ribs.
Further, a first lap joint steel bar 8 is arranged at the joint of the two floors, and two ends of the first lap joint steel bar 8 are respectively positioned on the bottom plates 2 of the two floors. The two ends of the first lap joint steel bar 8 are respectively positioned on the bottom plate 2, and after casting and forming, the connection strength of the two floors can be enhanced.
Preferably, a plurality of light filling bodies 1 are arranged on the bottom plate 2 at intervals along the length direction of the splicing surface, and the first lap reinforcement 8 is arranged at the interval between two adjacent light filling bodies 1.
As shown in fig. 7-15, further, an i-shaped steel beam 13 is arranged at the joint of the two floors, the web plate of the steel beam 13 is vertically arranged, and the connecting ring rib 5 is fixed with the web plate of the steel beam 13. The connecting ring rib 5 and the floor ring rib 4 are inserted on the web plate of the steel beam 13 while being staggered, and concrete 12 is poured at the splicing position to fix the connecting ring rib.
Further, steel plates 14 are sequentially fixed on two sides of the web plate of the steel beam 13 at intervals along the length direction of the web plate, the steel plates 14 on two sides of the web plate of the steel beam 13 correspond to each other one by one, through holes 19 are formed in the steel plates 14, and the connecting ring ribs 5 are arranged in the through holes 19 of the two steel plates 14 in a penetrating mode. The connecting ring rib 5 is inserted into the perforation 19 on the steel plate 14, thereby realizing the fixation of the connecting ring rib 5 and the web plate of the steel beam 13, and being convenient for installation.
Further, the lower end of the connecting ring rib 5 is opened, and both ends of the opening are respectively bent downward and vertically pass through the perforations 19 at both ends of the steel plate 14. The connecting ring rib 5 is arranged in an opening mode, constructors can insert two ends of the opening into the through holes 19 in the steel plate 14 respectively, the two ends are not required to be fixed to form a closed ring, and the construction is further facilitated.
Further, the upper end flange of the steel beam 13 is shorter than the lower end flange, a supporting groove is formed in the bottom of one end of the bottom plate 2, which is located on the splicing surface, and two ends of the lower end flange of the steel beam 13 are respectively located in the supporting grooves of the two bottom plates 2. In this embodiment, the upper end flange of the steel beam 13 is shorter than the lower end flange, so that the lower end flange can be placed in the supporting groove of the bottom plate 2, thereby facilitating the supporting of the steel beam 13 and the bottom plate 2.
Further, the steel beam 13 is sequentially provided with a plurality of through holes 18 along the length direction, second lap reinforcement bars 17 are arranged in the through holes 18 in a penetrating mode, and two ends of the second lap reinforcement bars 17 are respectively located in two floors. The second overlap bar 17 can further enhance the connection strength of the two floors after the concrete 12 is poured.
Further, an anti-cracking reinforcing steel bar 16 is included; one end of the anti-cracking reinforcing steel bar 16 is positioned on the lower end flange of the steel beam 13, and the other end is positioned in the bottom plate 2. The bottom plate 2 is provided with the anti-cracking reinforcing steel bars 16, so that the bottom plate 2 can be prevented from cracking.
Further, a plurality of pegs 15 are sequentially arranged on the upper flange of the steel beam 13 at intervals along the length direction. The arrangement of the studs 15 can enhance the roughness of the spliced structure of the concrete 12 and the floor slab, and is convenient for fixing the concrete 12.
Further, the light filling body 1 comprises polystyrene boards and plastic mould shells, and of course, the light filling body 1 can also comprise other light materials, and the filling of the light materials to form the multi-ribbed hollow floor slab can greatly reduce the dead weight of the floor slab and the consumption of concrete 12 and reduce the cost. Further, the invention also provides a construction method of the floor slab floor system structure, which comprises the following steps:
placing two floor slabs adjacently at intervals so that the installation openings of the two floor slabs are adjacent;
A plurality of connecting ring ribs 5 of the steel reinforcement framework and a plurality of floor ring ribs 4 on two floors are arranged in a staggered mode;
Concrete 12 is poured into the steel reinforcement cage and the floor slab ring ribs 4.
Further, a steel bar truss 7 is fixed on one side of the bottom plate 2, a connecting ring rib 5 is fixed on the opposite side, and a light filling body 1 is placed between the steel bar truss 7 and the connecting ring rib 5 on the bottom plate 2 to form a floor slab.
Further, the top steel bars are bound on the tops of the two lightweight filling bodies 1 to form a steel bar net 6, two ends of the steel bar net 6 are lapped on the steel bar trusses 7 of the two floorslabs, and concrete 12 is poured on the steel bar net 6 and the steel bar trusses 7.
Further, after the plurality of connection ring ribs 5 of the reinforcement cage and the plurality of floor ring ribs 4 on the two floors are all staggered, the method further comprises the following steps:
the first lap reinforcement 8 is placed at the splice, and both ends of the first lap reinforcement 8 are placed on the bottom plates 2 of the two floors, respectively.
Further, the two floors are placed adjacently at intervals, so that the installation openings of the two floors are adjacent, a plurality of connecting ring ribs 5 of the steel reinforcement framework and a plurality of floor ring ribs 4 on the two floors are all arranged in a staggered manner, and the method specifically comprises the following steps:
punching holes 19 on the steel plate 14;
steel plates 14 are welded on two sides of the web plate of the I-shaped steel beam 13;
Placing the I-shaped steel beam 13 so that the web plate of the steel beam 13 is vertically arranged;
respectively placing two floors on two sides of a web plate of the I-shaped steel beam 13;
The lower end of the connecting ring rib 5 is opened, and the two ends of the opening are bent downwards, so that the two ends of the opening of the connecting ring rib 5 vertically penetrate through the through holes 19 in the steel plate 14.
Further, after vertically passing both ends of the connecting bead 5 at the opening through the perforations 19 in the steel plate 14, the steps of:
the web plate of the steel beam 13 is sequentially provided with a plurality of through holes 18 at intervals along the length direction, the second lap reinforcement 17 passes through the through holes 18, and two ends of the second lap reinforcement are respectively positioned in two floors.
As shown in fig. 16 to 21, the floor construction includes the steps of:
processing a floor slab with a floor slab ring rib 4 and a steel bar truss 7 and a steel bar framework;
As shown in fig. 16, adjacent floors are placed close together;
as shown in fig. 17 and 18, a lightweight filler 1 is placed between the steel bar truss 7 and the floor slab ring 4;
as shown in fig. 17 and 18, the steel reinforcement framework is dropped from the upper side, passes through the floor slab ring ribs 4 of two adjacent floor slabs, and is placed on the top of the precast slab and is temporarily fixed;
as shown in fig. 19, placing first lap reinforcement bars 8, wherein the first lap reinforcement bars 8 cross plate joint positions and extend into the floor slabs at two sides of the plate joint, and the length meets the requirement of the lap length of the reinforcement bars;
As shown in fig. 20 and 21, the slab top steel bars are bound and concrete 12 is poured to complete the construction of the floor slab floor structure.
In summary, the floor slab structure and the construction method thereof provided by the invention have the advantages of no ribs on four sides of the precast slab, convenience for factory automation batch production, convenience for field construction of a close joint structure, light self weight of the floor slab, small concrete consumption, good stress performance, strong integrity, field assembly construction, high construction efficiency and the like, solve the problems and the defects of truss reinforced concrete superimposed sheets, have important significance for pushing the development of assembled buildings, and have wide prospects in application in assembled buildings.
In addition, as shown in fig. 22, in the horizontal projection plane, the floor structure 50 of the combined structure residential system comprises a floor slab 51 arranged indoors and a cantilever slab 52 arranged outdoors, and the floor slab 51 and the cantilever slab 52 are connected through a cold-heat prevention bridge node 53.
As shown in fig. 23 and 24, the cold-proof bridge joint 53 comprises a sandwich plate, a first reinforcing steel bar backing plate 53c and a second reinforcing steel bar backing plate 53d, wherein the sandwich plate comprises a first metal panel 53a, a second metal panel 53b, a plurality of joint connectors 56, an annular sealing plate 54 and a heat insulation material 55 (namely, heat insulation material), the annular sealing plate 54 is fixedly connected between the first metal panel 53a and the second metal panel 53b which are oppositely arranged and surrounds the first metal panel 53a and the second metal panel 53b to form a sealed cavity, one end of the joint connector 56 is fixedly connected with the first metal panel 53a, the other end of the joint connector is fixedly connected with the second metal panel 53b and is arranged in the sealed cavity, and the heat insulation material is filled in the sealed cavity.
A first reinforcing steel bar backing plate 53c is welded on the surface of one side of the first metal panel 53a, which is away from the second metal panel 53b, a plurality of floor reinforcing steel bars 53e extending to the indoor side and entering the floor slab 51 are welded on the first reinforcing steel bar backing plate 53c, and the floor reinforcing steel bars 53e are lapped or welded with a reinforcing steel bar framework in the floor slab 51.
A second reinforcing bar backing plate 53d is welded to a side surface of the second metal panel 53b facing away from the first metal panel 53a, and a plurality of gusset bars 53f extending to the outside and entering the gusset are welded to the second reinforcing bar backing plate 53 d. The gusset bar 53f is overlapped or welded with the reinforcement cage in the gusset. Wherein, the cantilever plate can be a member such as a cantilever balcony, a cantilever air-conditioning plate, a flashing plate and the like.
Preferably, the node connection 56 is a connection pipe, a connection rod, a honeycomb panel or a corrugated panel, and when the node connection 56 is a connection pipe, the connection pipe is filled with a heat insulating material. More preferably, the node connectors 56 and annular seal plates 54 are made of a fiber reinforced composite material or plastic. Wherein the heat insulation material is rock wool or foaming polyurethane.
In the above-described embodiments, the first metal panel 53a is preferably a carbon structural steel plate, a low alloy high strength structural steel plate, or a stainless steel plate, and the second metal panel 53b is preferably a carbon structural steel plate, a low alloy high strength structural steel plate, or a stainless steel plate.
The annular sealing plate 54 comprises a bottom sealing plate, a first side sealing plate, a top sealing plate and a second side sealing plate which are connected end to end in sequence along the circumferential direction, wherein the bottom sealing plate and the top sealing plate are oppositely arranged, and the first side sealing plate and the second side sealing plate are oppositely arranged.
During construction, the first metal panel 53a, the second metal panel 53b, the node connecting piece 56 and the annular sealing plate 54 are fixedly connected together, process holes are reserved in the annular sealing plate 54, reinforcing steel bar backing plates are welded on the first metal panel 53a and the second metal panel 53b respectively, reinforcing steel bars are welded on each reinforcing steel bar backing plate, reinforcing steel bars positioned on one side of the first metal panel 53a or the second metal panel 53b are placed in a template (a floor slab or a cantilever slab template), reinforcing steel bars are bound on the reinforcing steel bars in the template to form a reinforcing steel bar framework, concrete is poured in the template, heat insulation materials are filled into a sealing cavity through the process holes, the sealing cavity is pressed tightly, and the process holes are plugged to form a prefabricated part with cold and hot bridge preventing nodes for the floor slab.
The cold and hot bridge prevention node of the floor structure can adopt a prefabrication mode, has the characteristics of simple construction and small field workload, is filled with heat insulation materials such as rock wool, foaming polyurethane and the like in the middle of a sandwich plate, is embedded into a sealing cavity of the sandwich plate, and avoids the sandwich plate from forming a heat bridge, namely a bridge-breaking structure is formed between floor slabs and cantilever slabs on the indoor side and the outdoor side, so that the heat insulation effect is good, the durability of the heat insulation materials is good, the falling risk is avoided, steel bars are welded on a metal panel through steel bar backing plates, and a plurality of node connecting pieces are fixed between the metal panels, so that the cold and hot bridge prevention node has high structural strength and good stress performance.
Example 2
The present embodiment discloses a residential system of a combined structure, which is basically the same as embodiment 2, except that:
as shown in FIG. 25, the residential system with the combined structure comprises a constraint support piece 60, wherein two ends of the constraint support piece 60 are fixedly connected with the middle part of the column body and the middle part of the steel beam respectively.
As shown in fig. 26, the constraining support 60 includes an outer constraining sheath 61, an inner core 62, constraining ring 63, and constraining rod 64, all disposed within the outer constraining sheath.
The constraining rod 64 and the inner core 62 are both disposed along the length of the outer constraining sheath, and the constraining ring 63 is fixed to the outer constraining sheath and is sleeved over the inner core 62 and the constraining rod 64 to fix the inner core 62 to the constraining rod 64.
The inner core 62 is in a long strip shape as shown in fig. 26, restraining rods 64 are arranged on two sides of the inner core 62, or the inner core 62 is in a long strip shape with a cross-shaped cross section as shown in fig. 27, and the restraining rods 64 are arranged at four intervals of the cross shape.
The constraint ring 63 comprises a plurality of annular constraint bars sleeved outside the inner core 62 and the constraint rod 64, and the annular constraint bars are sequentially arranged at intervals along the length direction of the constraint rod 64. In addition, the confinement rings 63 may also be annular confinement bars helically wound around the core 62. Wherein, the annular constraint steel bar is preferably a smooth round steel bar. The restraining bar 64 is preferably a steel bar which is welded to the polished round bar. An anti-friction layer is provided between the restraining bar 64 and the inner core 62 to reduce frictional resistance between the restraining bar 64 and the inner core 62.
As shown in fig. 28, the outer constraint sleeve 61 includes a mortar layer 61a, and a reinforcing structure is provided in the mortar layer 61a, wherein the reinforcing structure is a steel wire mesh 61b (or a glass fiber mesh) provided along the circumferential direction of the outer constraint sleeve.
As shown in fig. 25, both ends of the inner core 62 are respectively provided with a connection end 65 extending out of the outer constraint sleeve, the connection end having a width larger than the width of the inner core 62 (the intermediate width of the inner core 62) in the outer constraint sleeve, and the connection end being provided with a mounting hole. The constraint support piece is respectively connected with the steel beam and the column body through the mounting holes on the connecting end.
In the buckling restrained brace, the restraint rod 64 and the restraint ring 63 restrain buckling of the inner core 62 and restrict local buckling of the inner core 62, so that the performance of the core plate can be fully exerted, meanwhile, the restraint ring 63 is only required to be sleeved outside the inner core 62 and the restraint rod 64 for fixing during processing, the requirement is low, and special factory processing is not required during the operation, so that the processing is simple and convenient, and the operation is easy. The restraint rod 64 adopts the steel bar, and inner core 62 adopts the steel core, and the restraint ring 63 adopts smooth round bar steel, and is all common material, and is with low costs, economic nature is good. The external constraint sleeve is made of mortar, so that the buckling restrained brace is prevented from being corroded, and maintenance is avoided during the service life.
Example 3
This example discloses a modular construction housing system which is substantially identical to example 2 except that:
29-32, the column 30 provided in this embodiment includes a round steel tube 31 and 2-4T-shaped steel 32, wherein concrete 33 is poured in the round steel tube 31, the T-shaped steel 32 are arranged at intervals along the circumferential direction of the round steel tube 31, one end of the web plate and the flange of the T-shaped steel 32 opposite to each other is fixedly connected with the outer wall of the round steel tube 31, the web plate 32b of the T-shaped steel 32 is located on the diameter extension line of the round steel tube 31, and bolt holes are formed in the flange 32 a.
The layout modes of the T-shaped steel 32 are various, as shown in fig. 29, two T-shaped steel 32 are provided, and the webs of the two T-shaped steel 32 are located on the same diameter of the round steel pipe 31 to form a straight line. As shown in fig. 31, the T-section steel 32 is two, and the webs of the two T-section steel 32 are perpendicular to form an L-shape. As shown in fig. 32, the T-shaped steel 32 is three, and webs of the three T-shaped steel 32 are provided in a T-shape. As shown in fig. 30, the T-shaped steel 32 is four, and the webs of the four T-shaped steel 32 are disposed in a cross shape.
The cylinder 30 provided by the invention is composed of the round steel tube 31 and the plurality of T-shaped steel 32, the concrete of the round steel tube 31 is positioned near the neutralization shaft and mainly bears the axial force, the advantage of good axial pressure mechanical property of the concrete of the round steel tube 31 is fully exerted, the T-shaped steel 32 is arranged far away from the neutralization shaft, the force arm is increased, the bending resistance bearing capacity is greatly improved, and the bending resistance mechanical property is greatly improved. Meanwhile, the T-shaped steel 32 is positioned on the outer side and is convenient to connect, so that all-bolt connection of beam column joints and column-column vertical splicing joints is realized, namely, the column body 30 is connected with the steel beam and the upper column and the lower column through bolts. The steel column can be prevented from being exposed out of the wall body during connection, and the purpose of hiding the column in the wall body is achieved. The node structure is simple, the node plate does not extend into the round steel pipe 31, and the concrete pouring quality is easy to guarantee. In addition, the cylinder 30 is processed by adopting finished sectional materials such as hot rolled sectional materials, cold-bent round steel pipes and the like, has simple processing, can be automatically produced, and has low production cost.
In the above-described scheme, it is preferable that the circular steel tube 31 is provided with a first circular vent hole (not shown) having a diameter of 12mm or more on the side wall or both ends. When a fire disaster occurs, the first circular exhaust hole is used for exhausting water vapor in the concrete in the circular steel tube 31, so that the circular steel tube 31 is prevented from cracking.
Example 4
This embodiment is substantially the same as embodiment 3 except that:
As shown in fig. 33, the column 30 is embedded in the wall S4, the flange of the T-steel near the outdoor side of the column 30 is an outer flange 3a, the outer flange 3a is parallel to the wall surface of the wall S4, the outer end surface of the outer flange 3a is coated with an outer anti-corrosion layer (not shown), and a plurality of glass wool boards S10 are coated on the outer side of the anti-corrosion layer of the outer flange to block the column 30 as a heat bridge to transfer heat flow between the indoor side and the outdoor side of the wall.
The heat bridge effect at the column 30 is effectively eliminated, the overall heat insulation performance of the building is improved, the influence of external temperature change on the outer anti-corrosion layer can be effectively weakened by the glass wool boards S10, and the effective anti-corrosion period of the anti-corrosion layer is prolonged.
The size of the panel S10 does not cover the entire wall S4 in a projection plane parallel to the wall S4, and the panel S10 covers only all or part of the post 30. Unlike heat insulating board or layer set outside wall, the glass wool board of the present invention has the heat bridge blocking function and solves the heat conducting problem in the local part of the column.
The heat preservation and insulation effect is remarkable, the cost is low, the heat transfer caused by the cylinder serving as a heat bridge can be effectively reduced, the heat flow concentration on the indoor side and the outdoor side of the wall S4 at the cylinder is eliminated, the heat insulation performance of the wall S4 is greatly improved, and the wall S4 can meet the design requirements of 75% energy conservation of residential buildings and green energy conservation with the heat transfer coefficient less than 0.45W/(m 2 & K).
And, on the projection plane parallel to the wall S4, the left and right side ends of the glass wool board S10 are provided to protrude outside flanges 3a and are fitted on the wall S4. The glass wool board S10 extends properly at the left and right sides of the outer flange 3a, so that the blocking performance of heat transfer of the column body heat bridge is further improved, and the heat insulation performance of the wall S4 is improved. The glass wool board S10 is embedded into the wall S4, so that the phenomena of edge rising, bulge and the like are not easy to occur, and the installation is firmer.
In an embodiment, 2 layers of glass wool boards are arranged on the outdoor side of the cylinder in the thickness direction of the wall S4, and the two adjacent layers of glass wool boards comprise an inner glass wool board S11 close to the cylinder and an outer glass wool board S12 far from the cylinder. On a projection plane parallel to the wall S4, the left and right sides of the outer glass wool board S12 are provided with the inner glass wool board S11 in a protruding mode, and on the horizontal section of the wall S4, the 2 glass wool boards are embedded in the wall S4 in an inverted pyramid shape (step shape) respectively.
On the horizontal section of the wall S4, a plurality of layers of glass wool boards are arranged in a (inverted pyramid) step shape. The heat transfer efficiency of the column is normally distributed, the heat transfer amount is the most dense in the central area of the column, the heat bridge area of the column is formed, the heat transfer amount on the left side and the right side is gradually reduced, and the heat bridge area is formed respectively, wherein the arrow length in fig. 14 reflects the heat transfer amount. The glass wool boards are arranged on one side of the cylinder in an inverted pyramid mode, and the transmission rule that heat is in normal distribution in a heat bridge is met, so that heat scattering on two sides of the cylinder can be blocked while heat transfer on the front side of the cylinder can be effectively blocked.
And a plurality of layers of glass wool boards are arranged in an inverted pyramid mode, and the left side and the right side of each glass wool board can be embedded with the wall S4, so that the glass wool boards can be prevented from warping and swelling in the service life of a building of decades after being installed. On the premise of ensuring that the building energy-saving design standard is met, the building energy-saving cost is reduced. The invention can be widely applied to the field of external wall heat preservation of steel frame structures.
While single ply glass wool boards require increased thickness of the glass wool board if the same thermal bridge blocking effect is achieved, excessively thick glass wool boards are often non-standard and require custom-made by the manufacturer, thereby increasing construction costs. In addition, the excessively thick glass wool board is too heavy, so that the glass wool board is inconvenient to install and easy to fall off after being installed. And when the single-layer glass wool board meets the heat preservation effect of the heat bridge column region, the situation that heat preservation measures are excessive exists in the corresponding region of the heat bridge influence region, and material waste exists.
According to the application, 2-6 layers of conventional glass wool boards can be flexibly adopted according to design requirements, the thickness of each layer of glass wool board is greatly reduced, the installation is convenient, the glass wool board is not easy to fall off after the installation, and the glass wool board is more stable. In addition, no excessive waste on materials exists, so that the method belongs to a green and energy-saving construction method.
In the above embodiment, more preferably, the number of layers of the glass wool board is 3-4, and the width of the outer flange 3a and the width of the 3-4 layers of glass wool board are sequentially arranged in equal ratio, wherein the ratio range is preferably 1.6-2. Taking 3 layers of glass wool boards as an example, the width of the inner layer of glass wool board is 1.6-2 times that of the outer flange 3a, the width of the middle layer of glass wool board is 1.6-2 times that of the inner layer of glass wool board, and the width of the outer layer of glass wool board is 1.6-2 times that of the middle layer of glass wool board.
Wherein, the inner glass wool board S11 is laid on the outer side surface of the outer flange 3a and the wall S4 by using an adhesive. The outer glass wool board S12 is laid on the inner glass wool board S11 and the wall S4 by the adhesive 5.
In addition, a connecting anchor bolt is further arranged between the wall S4 and the glass wool board S10, and after the glass wool board is stuck on the wall through an adhesive, the glass wool board is further fastened through the connecting anchor bolt. The glass wool board is fixed by adopting two modes of adhesive and anchor bolts, so that the integral performance of the heat insulation layer and the wall body is ensured.
In this embodiment, it is more preferable that the flange of the T-shaped steel near the indoor side in the column 30 is an inner flange 3b, the inner flange 3b is disposed parallel to the wall surface of the wall, the outer end surface of the inner flange 3b is coated with an inner anti-corrosion layer, and no insulation material is laid outside the inner anti-corrosion layer of the inner flange 3 b.
The indoor temperature and humidity change is small and stable, so that the inner anti-corrosion layer can be kept effective for a long time, the thermal bridge effect of the cylinder is utilized, and the blocking of the glass wool board outside the outer flange to the thermal bridge is combined, so that the temperature change fluctuation of the outer anti-corrosion layer of the outer flange 3a is greatly weakened, the effective service life of the outer anti-corrosion layer is prolonged more effectively, and the anti-corrosion performance of the cylinder is improved as a whole.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.
Claims (10)
1. The floor structure is characterized by comprising a floor slab and a cantilever plate, wherein in a horizontal projection plane, the floor slab is arranged indoors, and the cantilever plate is arranged outdoors;
The floor slab splicing structure comprises two adjacent floor slabs, wherein a steel reinforcement framework is arranged at intervals between the two adjacent floor slabs, a mounting notch is formed in one end of each floor slab, which is positioned on a splicing surface, a floor slab ring rib is vertically fixed at intervals along the length direction of each floor slab splicing surface, each steel reinforcement framework comprises a connecting horizontal rib and a plurality of connecting ring ribs, the connecting ring ribs are arranged along the length direction of each splicing surface and are fixed with the connecting horizontal ribs, the connecting ring ribs are parallel to the floor slab ring ribs, the connecting ring ribs are staggered with the plurality of floor slab ring ribs on the two floor slabs, and concrete is poured between the connecting ring ribs and the floor slab ring ribs;
The slab is connected with the cantilever plates through cold and hot bridge prevention nodes, the cold and hot bridge prevention nodes comprise sandwich plates, a first steel bar backing plate and a second steel bar backing plate, the sandwich plates comprise first metal panels, second metal panels, a plurality of node connectors, annular sealing plates and heat insulation materials, the annular sealing plates are fixedly connected between the first metal panels and the second metal panels which are oppositely arranged and surround the first metal panels and the second metal panels to form a sealed cavity, one end of each node connector is fixedly connected with the first metal panels, the other end of each node connector is fixedly connected with the second metal panels and arranged in the sealed cavity, and the heat insulation materials are filled in the sealed cavity;
The first steel bar backing plate is welded on the surface of one side of the first metal panel, which is away from the second metal panel, and a plurality of floor steel bars extending to the indoor side and entering the floor slab are welded on the first steel bar backing plate;
the second reinforcing steel bar backing plates are welded on the surface of one side, deviating from the first metal panel, of the second metal panel, and a plurality of cantilever plate reinforcing steel bars extending to the outdoor side and entering the cantilever plates are welded on the second reinforcing steel bar backing plates.
2. The floor structure of claim 1, wherein said node connection is a connection tube, a connection rod, a honeycomb panel or a corrugated panel.
3. The floor structure of claim 2, wherein said connection tube is filled with a thermally insulating material.
4. The floor structure according to claim 1, wherein the floor slab comprises a bottom plate and a light filling body positioned on the bottom plate, a bottom horizontal rib vertical to the connecting horizontal rib is arranged in the bottom plate, and one end of the bottom horizontal rib positioned on the splicing surface is bent to form a ring shape towards the other end so as to form the floor slab ring rib.
5. The building cover structure according to claim 4, wherein a steel bar truss is arranged at one end, far away from the splicing surface, of each bottom plate, steel bar nets are arranged at the upper ends of the two light filling bodies, two ends of each steel bar net are respectively connected with the steel bar trusses of the two floor slabs, and concrete is poured between the steel bar trusses and the steel bar nets.
6. The building cover structure according to claim 4, wherein first lap joint steel bars are arranged at the joint of the two floors, and two ends of each first lap joint steel bar are respectively positioned on the bottom plates of the two floors.
7. The floor structure according to claim 4, wherein an I-shaped steel beam is arranged at the joint of the two floors, the web plates of the steel beams are arranged vertically, and the connecting ring ribs are fixed with the web plates of the steel beams.
8. The floor structure according to claim 7, wherein steel plates are sequentially fixed on two sides of the steel beam web at intervals along the length direction of the steel beam web, the steel plates on two sides of the steel beam web are in one-to-one correspondence, through holes are formed in the steel plates, and the connecting ring ribs are arranged in the through holes of the two steel plates in a penetrating mode.
9. The floor structure according to claim 8, wherein the lower ends of the connecting ring ribs are opened, and both ends of the opening are respectively bent downwards and vertically pass through the perforations at both ends of the steel plate;
Fixing a steel bar truss on one side of a bottom plate, fixing a connecting ring rib on the opposite side of the bottom plate, and placing a light filling body between the steel bar truss and the connecting ring rib on the bottom plate to form the floor slab;
binding top steel bars at the tops of the two light filling bodies to form a steel bar net, overlapping two ends of the steel bar net on steel bar trusses of the two floors, and pouring concrete into the steel bar net and the steel bar trusses.
10. A modular structure housing system with a floor structure according to any one of claims 1 to 8, comprising steel beams, columns, shear walls and said floor.
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| CN103255834B (en) * | 2013-06-05 | 2015-03-11 | 南京工业大学 | Prefabricated heat-preservation balcony suitable for industrial production and construction method thereof |
| CN106088434A (en) * | 2016-08-25 | 2016-11-09 | 中冶建筑研究总院有限公司 | A kind of assembling type steel structure overlapped hollow floor system and construction method thereof |
| CN106401037A (en) * | 2016-10-26 | 2017-02-15 | 中国二十二冶集团有限公司 | Premanufactured superimposed rib floor for assembly-type steel structure house |
| CN109184033B (en) * | 2018-10-15 | 2020-06-26 | 中国建筑第七工程局有限公司 | An easy-to-construct prefabricated shear wall superimposed structure system and installation method |
| CN109868943B (en) * | 2018-12-29 | 2024-01-12 | 杭萧钢构股份有限公司 | A composite beam composed of steel beams and steel truss floor decking and its construction method |
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