A floor structure and combined structure residential system thereof

Abstract

The present invention relates to a floor structure and a combined structure residential system, wherein the floor structure comprises a floor slab and a cantilever slab; a steel bar skeleton is arranged in the interval between two adjacent floor slabs; the bottom of the installation notch is vertically fixed with floor slab ring bars in sequence along the length direction of the floor slab splicing surface; the steel bar skeleton comprises connecting horizontal bars arranged along the length direction of the splicing surface and a plurality of connecting ring bars fixed to the connecting horizontal bars; the connecting ring bars are parallel to the floor slab ring bars; the connecting ring bars and the floor slab ring bars are cast with concrete; the floor slab and the cantilever slab are connected by anti-cold and hot bridge nodes. The structure of the present application greatly improves the on-site construction speed, reduces the construction difficulty, has a simple construction process, has no bars on the four sides of the prefabricated slab, is convenient for factory automated mass production, and greatly reduces the production cost; has good force-bearing performance, strong integrity, and the assembled integral structure has strong integrity. On-site assembly construction has high construction efficiency, and the dense rib structure greatly reduces the deadweight of the floor slab and the amount of concrete used, thereby reducing costs.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a floor structure and a combined structural residential system thereof. Background Art

[0002] Cast-in-place floor slabs have the advantages of good structural integrity and good earthquake resistance, but they are labor-intensive and require a large number of templates. The construction period is long and it is difficult to achieve industrial production. Prefabricated floor slabs are easy to realize the industrialization of building components. The production of components is not restricted by seasons and climate, which can improve the quality of components. The construction speed is fast and a large number of templates and supports can be saved. However, the integrity is poor, it is not conducive to earthquake resistance, and the impermeability is poor. Composite slabs can combine the advantages of cast-in-place slabs and prefabricated slabs. They have the advantages of fast construction speed, short construction period, light weight of prefabricated components, good integrity, saving templates, and low requirements for lifting capacity.

[0003] The truss reinforced concrete composite slab is a prefabricated part formed by pouring the steel truss and the concrete bottom plate into one. After the on-site installation is completed, the composite layer concrete is poured to form an integrally stressed floor slab. The truss reinforced concrete composite slab has the advantages of partial assembly, reducing some on-site formwork, considering the use of two-way slabs, and accelerating the overall construction progress. However, the truss reinforced concrete composite slab also has many disadvantages and shortcomings, such as insufficient degree of assembly, inconvenient transportation of the steel truss slab, easy damage, relatively thick total thickness of the floor slab, and difficulty in on-site construction of the steel truss slab. The lateral connection between the steel truss slabs and the cast-in-place beams requires the steel truss slabs to be pre-embedded with anchor steel bars in advance in the early stage of production, commonly known as "beard bars". However, during transportation and construction, the "beard bars" may have been damaged or deformed, which brings trouble to on-site construction. At the same time, the beard bars extending from the four sides of the steel truss slabs make it difficult for the factory to produce automatically, with low production efficiency and high cost; the integral joint structure between the steel truss slabs requires on-site formwork, complex procedures, and difficult construction, which reduces the construction efficiency of the steel truss slabs.

[0004] Therefore, the development of new precast concrete floor structures and their construction methods is one of the key technical issues that need to be urgently solved in the current prefabricated steel structure construction industry. Summary of the invention

[0005] The purpose of the present invention is to provide a floor structure and a combined structure residential system thereof, so as to solve the technical problems existing in the prior art of low production efficiency of reinforcement on four sides and complex on-site construction of integral joints.

[0006] In order to solve the above technical problems, the present invention provides a floor structure, comprising: a floor slab and a cantilever slab; in a horizontal projection plane, the floor slab is arranged indoors, and the cantilever slab is arranged outdoors;

[0007] Two adjacent floor slabs are arranged at intervals, and a steel frame is arranged in the intervals; an installation notch is provided at one end of the floor slab located at the splicing surface; the bottom of the installation notch is vertically fixed with floor slab ring bars in sequence and at intervals along the length direction of the floor slab splicing surface; the steel frame includes connecting horizontal bars arranged along the length direction of the splicing surface and a plurality of connecting ring bars fixed to the connecting horizontal bars; the connecting ring bars are parallel to the floor slab ring bars; the plurality of connecting ring bars and the plurality of floor slab ring bars on the two floor slabs are staggered; the connecting ring bars and the floor slab ring bars are poured with concrete.

[0008] The floor slab and the cantilever slab are connected via an anti-cold and heat bridge node; the anti-cold and heat bridge node comprises a sandwich slab, a first steel plate and a second steel plate; the sandwich slab comprises a first metal panel, a second metal panel, a plurality of node connectors, an annular sealing plate and a heat insulating material; the annular sealing plate is fixedly connected between the first metal panel and the second metal panel which are arranged opposite to each other, and forms a sealed cavity with the first metal panel and the second metal panel; one end of the node connector is fixedly connected to the first metal panel, and the other end is fixedly connected to the second metal panel, and is arranged in the sealed cavity; the heat insulating material is filled in the sealed cavity;

[0009] The first steel bar pad is welded on the surface of the first metal panel facing away from the second metal panel, and a plurality of floor steel bars extending toward the indoor side and entering the floor slab are welded on the first steel bar pad;

[0010] The second steel bar pad is welded to the surface of the second metal panel on one side facing away from the first metal panel, and a plurality of cantilever plate steel bars extending toward the outdoor side and entering the cantilever plate are welded to the second steel bar pad.

[0011] Among them, the cantilever plate can be a cantilevered balcony, a cantilevered air-conditioning panel, a rain shield and other components.

[0012] Preferably, the node connection member is a connecting pipe, a connecting rod, a honeycomb plate or a corrugated plate;

[0013] When the node connection piece is a connection pipe, the connection pipe is filled with heat insulation material.

[0014] Preferably, the node connector and the annular sealing plate are made of fiber-reinforced composite material or plastic. And preferably, the thermal insulation material is rock wool or foamed polyurethane.

[0015] Preferably, the first metal panel is a carbon structural steel plate, a low alloy high strength structural steel plate or a stainless steel plate; the second metal panel is a carbon structural steel plate, a low alloy high strength structural steel plate or a stainless steel plate.

[0016] Preferably, the annular sealing plate includes 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 the circumferential direction; the bottom sealing plate and the top sealing plate are arranged opposite to each other; the first side sealing plate and the second side sealing plate are arranged opposite to each other; and the steel bars are threaded steel bars.

[0017] During construction, the first metal panel, the second metal panel, a plurality of node connectors and the annular sealing plate are fixedly connected together, and a process hole is reserved on the annular sealing plate;

[0018] Welding steel reinforcement plates to the first metal panel and the second metal panel respectively;

[0019] Steel bars are welded on each steel bar pad;

[0020] Put the steel bars on one side of the first metal panel or the second metal panel into the formwork (floor slab or cantilever slab formwork);

[0021] Tie the steel bars to the steel bars in the formwork to form a steel skeleton;

[0022] Pour concrete into the formwork;

[0023] Fill the sealing cavity with heat-insulating material through the process hole and squeeze it tightly;

[0024] The process holes are sealed to form prefabricated components with anti-cold and thermal bridge nodes for the floor.

[0025] The anti-cold and heat bridge node of the floor structure of the present invention has the characteristics of simple construction and small on-site workload; rock wool, foamed polyurethane and other insulation materials are filled in the middle of the sandwich panel, and at the same time, the insulation material is embedded in the sealed cavity of the sandwich panel to avoid the formation of thermal bridges in the sandwich panel, that is, a broken bridge structure is formed between the floor slab and the cantilever slab on both sides of the indoor and outdoor, so that the thermal insulation effect is good, the durability of the insulation material is good and there is no risk of falling off; the steel bars are welded to the metal panels through the steel bar pads, and a plurality of node connectors are fixed between the metal panels, so that the anti-cold and heat bridge node has high structural strength and good force-bearing performance.

[0026] Furthermore, the floor slab includes a base plate and a lightweight filling body located on the base plate; the base plate is provided with bottom horizontal ribs perpendicular to the connecting horizontal ribs, and the bottom horizontal ribs are located at one end of the splicing surface and are bent into a ring shape toward the other end to form the floor slab ring ribs.

[0027] Furthermore, a steel truss is provided at one end of each base plate away from the splicing surface; a steel mesh is provided at the upper ends of the two lightweight filling bodies, and both ends of the steel mesh are respectively connected to the steel trusses of the two floor slabs; and the steel trusses and the steel mesh are poured with concrete.

[0028] Furthermore, a first lap steel bar is provided at the joint of the two floor slabs; two ends of the first lap steel bar are respectively located on the bottom plates of the two floor slabs.

[0029] Furthermore, an I-shaped steel beam is provided at the joint of the two floor slabs; the web of the steel beam is vertically arranged; and the connecting ring reinforcement is fixed to the web of the steel beam.

[0030] Furthermore, steel plates are fixed in sequence at intervals on both sides of the web of the steel beam along its length direction; the steel plates on both sides of the web of the steel beam correspond to each other one by one; the steel plates are provided with through holes; and the connecting ring reinforcement is passed through the through holes of two correspondingly arranged steel plates.

[0031] Furthermore, the lower end of the connecting ring rib is open, and the two ends of the opening are respectively bent downward and vertically pass through the through holes at both ends of the steel plate.

[0032] Furthermore, the upper flange of the steel beam is shorter than the lower flange; a support groove is provided at the bottom of one end of the base plate located at the splicing surface; and both ends of the lower flange of the steel beam are respectively located in the support grooves of the two base plates.

[0033] Furthermore, the steel beam is provided with a plurality of through holes in sequence along its length direction, and second lap steel bars are passed through the through holes; two ends of the second lap steel bars are respectively located in the two floor slabs.

[0034] Furthermore, it also includes anti-cracking steel bars; one end of the anti-cracking steel bars is located on the lower flange of the steel beam, and the other end is located inside the bottom plate.

[0035] Furthermore, a plurality of bolts are sequentially spaced apart on the upper flange of the steel beam along its length direction.

[0036] Furthermore, the lightweight filling body comprises a polystyrene board and a plastic mold shell.

[0037] Furthermore, a steel bar truss is fixed on one side of the bottom plate, and a connecting ring bar is fixed on the other opposite side, and a lightweight filling body is placed between the steel bar truss and the connecting ring bar on the bottom plate to form the floor slab.

[0038] Furthermore, top steel bars are tied on the tops of the two lightweight filling bodies to form a steel mesh, and both ends of the steel mesh are overlapped on the steel trusses of the two floor slabs; concrete is poured on the steel mesh and the steel trusses.

[0039] The floor structure provided by the present invention is provided with floor ring reinforcement at the installation notch. When splicing, the connecting ring reinforcement of the steel skeleton and the floor ring reinforcement are staggered, and the splicing nodes are connected and fixed by pouring concrete. The force of the floor on one side is transmitted to the steel skeleton through the floor ring reinforcement on that side, and the steel skeleton then transmits the force to the connecting ring reinforcement of the floor on the other side, and the force is borne by the floor on the other side. The joints between the structural plates of the present invention can be constructed without formwork, which greatly improves the speed of on-site construction, reduces the difficulty of construction, and has a simple construction process. In addition, there is no need to set beard reinforcement on the floor, and no reinforcement is provided on the four sides of the prefabricated board, which is convenient for factory automated mass production and can greatly reduce production costs; the floor has good force-bearing performance and strong integrity, the dense rib structure has good force-bearing performance, and the assembled integral structure has strong integrity. On-site assembly construction has high construction efficiency. The dense rib hollow floor is filled with lightweight materials to greatly reduce the deadweight of the floor and the amount of concrete used, thereby reducing costs.

[0040] In a third aspect, the present invention further discloses a combined structural residential system with the above-mentioned floor structure, comprising: steel beams, columns, shear walls and the above-mentioned floor.

[0041] Furthermore, the column includes a round steel pipe and a plurality of T-shaped steels; concrete is poured inside the round steel pipe, the plurality of T-shaped steels are arranged at intervals along the circumference of the round steel pipe, and the web and the opposite end of the flange of the T-shaped steel are fixedly connected to the outer wall of the round steel pipe; the web of the T-shaped steel is located on the extension line of the diameter of the round steel pipe, and bolt holes are arranged on the flange.

[0042] Furthermore, there are two T-shaped steels, and the webs of the two T-shaped steels are located on the same diameter of the round steel pipe to form a straight line.

[0043] Furthermore, the number of the T-shaped steels is more than 3, and the T-shaped steels are evenly spaced in the circumferential direction of the round steel tube.

[0044] Further, there are two T-shaped steels, and the webs of the two T-shaped steels are vertical to form an L shape; or, there are three T-shaped steels, and the webs of the three T-shaped steels are arranged in a T shape; or, there are four T-shaped steels, and the webs of the four T-shaped steels are arranged in a cross shape.

[0045] Furthermore, the round steel pipe is provided with a first circular exhaust hole along its axial direction near its outer wall; the diameter of the first circular exhaust hole is greater than or equal to 12 mm.

[0046] The column provided by the present invention is composed of a round steel tube and a plurality of T-shaped steels. The round steel tube concrete is located near the neutral axis and mainly bears the axial force, giving full play to the advantages of the good axial pressure mechanical properties of the round steel tube concrete. The T-shaped steel is arranged away from the neutral axis, the force arm is increased, and the bending bearing capacity is greatly improved, thereby greatly improving the bending mechanical properties. At the same time, the T-shaped steel is located on the outside for easy connection, and the beam-column node and the vertical splicing node between columns are fully bolted, that is, the column and the steel beam as well as the upper and lower columns are all connected by bolts. When connecting, the steel column can also be prevented from being exposed outside the wall, so as to achieve the purpose of hiding the column inside the wall.

[0047] Furthermore, it also includes a restraining support member; the two ends of the restraining support member are respectively fixedly connected to the middle part of the column and the middle part of the steel beam;

[0048] The restraining support member includes an outer restraining sleeve and an inner core, a restraining ring and a restraining rod all disposed in the outer restraining sleeve;

[0049] The constraint rod and the inner core are both arranged along the length direction of the outer constraint sleeve. The constraint ring is fixed to the outer constraint sleeve and is sleeved outside the inner core and the constraint rod to fix the inner core to the constraint rod.

[0050] Furthermore, the inner core is in the shape of a long strip; the restraining rods are arranged on both sides of the inner core; or, the inner core is in the shape of a long strip with a cross-shaped cross section, and the restraining rods are arranged at four intervals of the cross.

[0051] Furthermore, the constraint ring includes a plurality of annular constraint steel bars sleeved outside the inner core and the constraint rod; the plurality of annular constraint steel bars are sequentially spaced along the length direction of the constraint rod.

[0052] Furthermore, the restraining ring is an annular restraining steel bar spirally wound outside the inner core, wherein the annular restraining steel bar is preferably a plain round steel bar.

[0053] Furthermore, the restraining rod is a steel rod; the steel rod is welded and fixed to the plain round steel bar.

[0054] Furthermore, an anti-friction layer is provided between the restraining rod and the inner core to reduce the frictional resistance between the restraining rod and the inner core.

[0055] Furthermore, the material of the outer constraint sleeve is mortar, and a reinforcement structure is provided inside the outer constraint sleeve; the reinforcement structure is a steel wire mesh or a glass fiber mesh; the steel wire mesh or the glass fiber mesh is arranged along the circumference of the outer constraint sleeve.

[0056] Furthermore, the two ends of the inner core are respectively provided with connection ends extending out of the outer constraint sleeve; the width of the connection ends is greater than the width of the inner core in the outer constraint sleeve (the middle width of the inner core); and mounting holes are provided on the connection ends. The constraint support is respectively connected to the steel beam and the column through the mounting holes on the connection ends.

[0057] The buckling restraint support, restraint rod and restraint ring in the present invention restrain the buckling of the inner core and limit the local buckling of the inner core, so that the performance of the core plate can be fully exerted. At the same time, during processing, it is only necessary to put the restraint ring on the inner core and the restraint rod for fixing, which has low requirements and does not require special factory processing. Therefore, the processing is simple and easy to operate. The restraint rod is made of steel rod, the inner core is made of steel core, and the restraint ring is made of plain round steel bar, which are all commonly used materials with low cost and good economy. The outer restraint sleeve is made of mortar to avoid rusting of the anti-buckling support and is maintenance-free during the service life.

[0058] Furthermore, the T-shaped steel flange in the column close to the outdoor side is the outer flange, and the outer flange is arranged parallel to the wall surface of the wall; the outer end face of the outer flange is coated with an outer anti-corrosion layer; several layers of glass wool boards are laid on the outside of the anti-corrosion layer of the outer flange, which are used to block the column from acting as a thermal bridge to transfer heat flow between the indoor and outdoor sides of the wall.

[0059] While effectively eliminating the thermal bridge effect at the column and improving the overall thermal insulation performance of the building, several layers of glass wool boards can effectively reduce the impact of external temperature changes on the external anti-corrosion layer and increase the effective anti-corrosion period of the anti-corrosion layer.

[0060] Furthermore, the T-shaped steel flange in the column close to the indoor side is the inner flange, the inner flange is arranged parallel to the wall surface of the wall, the outer end surface of the inner flange is coated with an inner anti-corrosion layer; and no insulation material is laid on the outer side of the inner anti-corrosion layer of the inner flange.

[0061] Since the temperature and humidity in the room do not change much and are relatively stable, it is beneficial for the inner anti-corrosion layer to remain effective for a long time. By utilizing the thermal bridge effect of the column itself and combining it with the glass wool board outside the outer flange to block the thermal bridge, the temperature fluctuations at the outer anti-corrosion layer of the outer flange are greatly reduced, thereby more effectively extending the effective life of the outer anti-corrosion layer and improving the anti-corrosion performance of the column as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 A schematic structural diagram of a floor structure provided in Example 1 of the present invention;

[0063] Figure 2 for Figure 1 The 1-1 cross-sectional view of the floor structure shown;

[0064] Figure 3 for Figure 1 The 2-2 cross-sectional view of the floor structure shown;

[0065] Figure 4 for Figure 1 The 3-3 cross-sectional view of the floor structure shown;

[0066] Figure 5 A schematic diagram of the structure of a steel bar skeleton provided in Example 1 of the present invention;

[0067] Figure 6 for Figure 5 Another structural schematic diagram of a steel reinforcement skeleton;

[0068] Figure 7 This is a schematic diagram of the structure after pouring concrete at the floor slab connection in Example 1;

[0069] Figure 8 It is a structural schematic diagram of a floor structure of another implementation method in Example 1;

[0070] Fig. 9 for Figure 8 The 5-5 cross-sectional view of the floor structure shown;

[0071] Fig.10 for Figure 8 The 6-6 section view of the floor structure shown;

[0072] Fig.11 for Figure 8 The sectional view of the floor structure shown is 7-7;

[0073] Fig.12 for Fig. 9 The schematic diagram of the floor structure shown is after the concrete is poured;

[0074] Fig.13 for Fig.10 The schematic diagram of the floor structure shown is after the concrete is poured;

[0075] Fig.14 A schematic diagram of the structure of a steel beam provided in an embodiment of the present invention;

[0076] Fig.15 for Fig.14 Another structural schematic diagram of the steel beam shown;

[0077] Fig.16 This is a first structural schematic diagram of the floor structure during construction in Example 1;

[0078] Fig.17 This is a second structural schematic diagram of the floor structure during construction in Example 1;

[0079] Fig.18This is a third structural schematic diagram of the floor structure during construction in Example 1;

[0080] Fig.19 This is a fourth structural schematic diagram of the floor structure during construction in Example 1;

[0081] Fig. 20 This is a fifth structural schematic diagram of the floor structure during construction in Example 1;

[0082] Fig.21 It is a sixth structural schematic diagram of the floor structure during construction in Example 1;

[0083] Fig. 22 This is a schematic diagram of the structure of the floor in Example 1 of the present invention;

[0084] Fig.23 This is a schematic diagram of the structure of the anti-cold and thermal bridge node in Example 1 of the present invention;

[0085] Fig.24 This is a schematic structural diagram of the annular sealing plate in Example 1 of the present invention;

[0086] Fig.25 This is a schematic diagram of the arrangement of the restraining support members in Example 2;

[0087] Fig.26 for Fig.25 AA section view in;

[0088] Fig. 27 is a side view of the cross-shaped inner core 62 in Example 2;

[0089] Fig.28 for Fig.26 FF section view in;

[0090] Fig.29 A schematic structural diagram of a straight-line column provided in Example 3 of the present invention;

[0091] Fig.30 A schematic structural diagram of a cross-shaped column provided in Example 3 of the present invention;

[0092] Fig.31 A schematic diagram of the structure of an L-shaped column provided in Example 3 of the present invention;

[0093] Fig.32 A schematic diagram of the structure of a T-shaped column provided in Example 3 of the present invention;

[0094] Fig.33 It is a schematic diagram of the column broken bridge structure in Example 4 of the present invention. DETAILED DESCRIPTION

[0095] The present invention is further explained below in conjunction with specific implementation modes.

[0096] Example 1

[0097] The floor structure provided in this embodiment includes: a floor slab and a cantilever slab; in a horizontal projection plane, the floor slab is arranged indoors, and the cantilever slab is arranged outdoors.

[0098] like Figure 1-Figure 7 As shown, it includes a steel frame and two spaced-apart floor slabs; a mounting notch is provided at one end of the floor slab at the splicing surface; the bottom of the mounting notch is vertically fixed with floor slab ring bars 4 in sequence and at intervals along the length direction of the floor slab splicing surface; the steel frame includes connecting horizontal bars 9 arranged along the length direction of the splicing surface and a plurality of connecting ring bars 5 fixed to the connecting horizontal bars 9; the connecting ring bars 5 are parallel to the floor slab ring bars 4; the plurality of connecting ring bars 5 and the plurality of floor slab ring bars 4 on the two floor slabs are staggered; the connecting ring bars 5 and the floor slab ring bars 4 are poured with concrete 12.

[0099] The floor slab structure provided in this embodiment is provided with floor slab ring reinforcement 4 at the installation notch. When splicing, the connecting ring reinforcement 5 of the steel skeleton and the floor slab ring reinforcement 4 are staggered, and the splicing nodes can be connected and fixed by pouring concrete 12. The force of the floor slab on one side is transmitted to the steel skeleton through the floor slab ring reinforcement 4 on that side, and the steel skeleton then transmits the force to the connecting ring reinforcement 5 of the floor slab on the other side, and the force is borne by the floor slab on the other side. The joints between the structural plates of the present invention can be constructed without formwork, which greatly improves the speed of on-site construction, reduces the difficulty of construction, and has a simple construction process. In addition, there is no need to set beard ribs on the floor slab, and no ribs are provided on the four sides of the prefabricated slab, which is convenient for factory automated mass production and can greatly reduce production costs. The floor slab has good force-bearing performance and strong integrity. The dense rib structure has good force-bearing performance, and the assembled integral structure has strong structural integrity. On-site assembly construction has high construction efficiency.

[0100] The annular ribs mentioned in the present invention refer to structures with a ring-like shape, and the annular ribs may be closed or have openings.

[0101] Preferably, the floor slab ring reinforcement 4 is a closed annular reinforcement.

[0102] Preferably, there are multiple connecting horizontal ribs 9, and the multiple connecting horizontal ribs 9 are arranged in sequence and at intervals along the circumference of the connecting ring ribs 5 to improve the connection strength with the connecting ring ribs 5 and the connection strength at the splicing nodes.

[0103] like Figure 1-Figure 7 As shown, further, the floor slab includes a bottom plate 2 and a lightweight filling body 1 located on the bottom plate 2; a bottom horizontal rib 3 perpendicular to the connecting horizontal rib 9 is provided in the bottom plate 2, and the bottom horizontal rib 3 is located at one end of the splicing surface and bent toward the other end into a ring shape to form a floor slab ring rib 4. In this embodiment, the bottom horizontal rib 3 is provided in the bottom plate 2, and one end of the bottom horizontal rib 3 is directly bent to form the floor slab ring rib 4, which is easy to process.

[0104] Preferably, bottom reinforcements perpendicular to the bottom horizontal reinforcements 3 are provided in the bottom plate 2, and the bottom reinforcements are parallel to the connecting horizontal ring reinforcements.

[0105] The light filling body 1 of the present invention refers to a filling body made of light materials in the industry, such as polystyrene boards, plastic mold shells and other light materials.

[0106] Furthermore, a steel truss 7 is provided at one end of each bottom plate 2 away from the splicing surface; a steel mesh 6 is provided at the upper end of the two lightweight filling bodies 1, and the two ends of the steel mesh 6 are respectively connected to the steel trusses 7 of the two floor plates; concrete 12 is poured on the steel truss 7 and the steel mesh 6. One side of the bottom plate 2 is the steel truss 7, the other side is the floor ring reinforcement 4, and the top is the steel mesh 6. Concrete 12 is poured into the steel truss 7, the floor ring reinforcement 4 and the steel mesh 6 to fix the two floor plates, which can further enhance the connection strength.

[0107] Specifically, the steel mesh 6 on the top of the bottom plate 2 is formed by binding and fixing a plurality of mutually perpendicular transverse ribs 11 and longitudinal ribs 10. The longitudinal ribs 10 are parallel to the connecting horizontal ribs 9, and the transverse ribs 11 are main force-bearing ribs.

[0108] Furthermore, a first lap steel bar 8 is provided at the joint of the two floor slabs; both ends of the first lap steel bar 8 are respectively located on the bottom plates 2 of the two floor slabs. Both ends of the first lap steel bar 8 are respectively located on the bottom plates 2, and after casting, the connection strength of the two floor slabs can be enhanced.

[0109] Preferably, a plurality of lightweight filling bodies 1 are arranged on the bottom plate 2 at intervals along the length direction of the joint surface, and the first overlapping steel bars 8 are arranged at the interval between two adjacent lightweight filling bodies 1 .

[0110] like Figure 7-Figure 15 As shown, further, an I-shaped steel beam 13 is provided at the joint of the two floor slabs; the web of the steel beam 13 is vertically arranged; the connecting ring reinforcement 5 is fixed to the web of the steel beam 13. This embodiment can be applied to the node connected with the steel beam 13, the connecting ring reinforcement 5 is staggered with the floor ring reinforcement 4 and inserted into the web of the steel beam 13, and the concrete 12 is poured to the joint to fix it.

[0111] Furthermore, steel plates 14 are fixed in sequence along the length direction of the web of the steel beam 13 at intervals on both sides; the steel plates 14 on both sides of the web of the steel beam 13 correspond to each other; the steel plates 14 are provided with through holes 19; the connecting ring ribs 5 are inserted into the through holes 19 of the two correspondingly arranged steel plates 14. The connecting ring ribs 5 are inserted into the through holes 19 on the steel plates 14, thereby achieving the fixing of the connecting ring ribs 5 and the web of the steel beam 13, which is convenient for installation.

[0112] Furthermore, the lower end of the connecting ring rib 5 is open, and the two ends of the opening are bent downward and vertically passed through the through holes 19 at both ends of the steel plate 14. The connecting ring rib 5 is set in an open form, and the constructor can insert the two ends of the opening into the through holes 19 on the steel plate 14 respectively, without fixing the two ends to form a closed ring, which further facilitates construction.

[0113] Furthermore, the upper flange of the steel beam 13 is shorter than the lower flange; a support groove is provided at the bottom of one end of the bottom plate 2 located at the splicing surface; and both ends of the lower flange of the steel beam 13 are respectively located in the support grooves of the two bottom plates 2. In this embodiment, the upper flange of the steel beam 13 is shorter than the lower flange, so that the lower flange can be placed in the support groove of the bottom plate 2, thereby facilitating the support of the steel beam 13 and the bottom plate 2.

[0114] Furthermore, the steel beam 13 is provided with a plurality of through holes 18 in sequence along its length direction, and a second lap steel bar 17 is passed through the through holes 18; the two ends of the second lap steel bar 17 are respectively located in the two floor slabs. The second lap steel bar 17 can further enhance the connection strength of the two floor slabs after pouring the concrete 12.

[0115] Furthermore, an anti-cracking steel bar 16 is included; one end of the anti-cracking steel bar 16 is located on the lower end flange of the steel beam 13, and the other end is located in the bottom plate 2. The anti-cracking steel bar 16 is arranged on the bottom plate 2 to prevent the bottom plate 2 from cracking.

[0116] Furthermore, a plurality of bolts 15 are sequentially arranged at intervals along the length direction of the upper flange of the steel beam 13. The arrangement of the bolts 15 can enhance the roughness of the splicing structure of the concrete 12 and the floor slab, and facilitate the fixing of the concrete 12.

[0117] Furthermore, the lightweight filling body 1 includes a polystyrene board and a plastic formwork. Of course, the lightweight filling body 1 may also include other lightweight materials. Filling with lightweight materials to form a dense-ribbed hollow floor slab can significantly reduce the deadweight of the floor slab and reduce the amount of concrete 12 to reduce costs. Furthermore, the present invention also provides a method for constructing a floor slab structure, comprising the following steps:

[0118] Place two floor slabs adjacent to each other so that the installation notches of the two floor slabs are adjacent to each other;

[0119] The multiple connecting ring bars 5 of the steel skeleton and the multiple floor ring bars 4 on the two floor slabs are staggered;

[0120] Concrete 12 is poured onto the steel frame and the floor slab ring reinforcement 4.

[0121] Furthermore, a steel truss 7 is fixed on one side of the base plate 2, and a connecting ring rib 5 is fixed on the other opposite side, and a lightweight filling body 1 is placed between the steel truss 7 and the connecting ring rib 5 on the base plate 2 to form a floor slab.

[0122] Furthermore, top steel bars are tied on the top of the two lightweight filling bodies 1 to form a steel mesh 6, and both ends of the steel mesh 6 are overlapped on the steel trusses 7 of the two floor slabs; concrete 12 is poured on the steel mesh 6 and the steel trusses 7.

[0123] Furthermore, after the plurality of connecting ring bars 5 of the steel skeleton and the plurality of floor ring bars 4 on the two floor slabs are staggered, the following steps are also included:

[0124] The first overlapping steel bar 8 is placed at the joint, and both ends of the first overlapping steel bar 8 are respectively placed on the bottom plates 2 of the two floor slabs.

[0125] Further, two floor slabs are placed adjacently and spaced apart so that the installation notches of the two floor slabs are adjacent to each other, and a plurality of connecting ring bars 5 of the steel skeleton and a plurality of floor slab ring bars 4 on the two floor slabs are staggered, specifically including the following steps:

[0126] A perforation 19 is formed on the steel plate 14;

[0127] Steel plates 14 are welded on both sides of the web of the I-shaped steel beam 13;

[0128] Placing the I-shaped steel beam 13 so that the web of the steel beam 13 is arranged vertically;

[0129] Place two floor slabs on both sides of the web of the I-shaped steel beam 13;

[0130] The lower end of the connecting ring rib 5 is open, and the two ends at the opening are bent downward, and the two ends at the opening of the connecting ring rib 5 are vertically passed through the through holes 19 on the steel plate 14.

[0131] Furthermore, after the two ends of the opening of the connecting ring rib 5 are vertically passed through the through holes 19 on the steel plate 14, the following steps are also included:

[0132] A plurality of through holes 18 are sequentially spaced along the length direction of the web of the steel beam 13 , and the second lap reinforcement 17 is passed through the through holes 18 , with both ends being located in the two floor slabs respectively.

[0133] like Figures 16 to 21 As shown, the floor construction includes the following steps:

[0134] Processing the floor slab and steel bar skeleton with floor slab ring reinforcement 4 and steel bar trusses 7;

[0135] like Fig.16 As shown, place adjacent floors close together;

[0136] like Fig.17 and Fig.18 As shown, a lightweight filling body 1 is placed between the steel truss 7 and the floor slab ring reinforcement 4;

[0137] like Fig.17 and Fig.18 As shown, the steel bar skeleton is dropped from the upper side, passed through the floor ring reinforcement 4 of the two adjacent floor slabs, and placed on the top of the precast slab and temporarily fixed;

[0138] like Fig.19 As shown, a first lap steel bar 8 is placed, the first lap steel bar 8 crosses the plate joint position and extends into the floor slabs on both sides of the plate joint, and the length meets the steel bar lap length requirement;

[0139] like Fig. 20 and Fig.21 As shown, the top steel bars of the slab are tied and concrete 12 is poured to complete the construction of the floor slab structure.

[0140] In summary, the floor slab structure and the construction method thereof proposed in the present invention have many advantages, such as no reinforcement on the four sides of the prefabricated panels, which is convenient for automated mass production in factories, convenient on-site construction of the close-jointed joint structure, light self-weight of the floor slab, small amount of concrete used, good stress performance, strong integrity, on-site assembly construction, and high construction efficiency. It solves the problems and shortcomings of truss reinforced concrete composite slabs, is of great significance for promoting the development of prefabricated buildings, and has broad prospects for its application in prefabricated buildings.

[0141] In addition, if Fig. 22 As shown, in the horizontal projection plane, the floor structure 50 of the combined structural residential system includes a floor slab 51 arranged indoors and a cantilever slab 52 arranged outdoors; the floor slab 51 and the cantilever slab 52 are connected by an anti-cold and thermal bridge node 53.

[0142] like Fig.23 and 24 As shown, the anti-cold and thermal bridge node 53 includes a sandwich plate, a first steel bar pad 53c and a second steel bar pad 53d; the sandwich plate includes a first metal panel 53a, a second metal panel 53b, a plurality of node connectors 56, an annular sealing plate 54 and a thermal insulation material 55 (i.e., thermal insulation material); the annular sealing plate 54 is fixedly connected between the first metal panel 53a and the second metal panel 53b that are arranged opposite to each other, and is surrounded by the first metal panel 53a and the second metal panel 53b to form a sealed cavity; one end of the node connector 56 is fixedly connected to the first metal panel 53a, and the other end is fixedly connected to the second metal panel 53b, and is arranged in the sealed cavity; the thermal insulation material is filled in the sealed cavity.

[0143] A first steel bar pad 53c is welded to the surface of the first metal panel 53a facing away from the second metal panel 53b, and a plurality of floor steel bars 53e extending toward the inside of the room and entering the floor 51 are welded to the first steel bar pad 53c; the floor steel bars 53e are overlapped or welded to the steel bar skeleton in the floor 51.

[0144] A second steel plate 53d is welded to the surface of the second metal panel 53b on one side away from the first metal panel 53a, and a plurality of cantilever plate steel bars 53f extending toward the outside and entering the cantilever plate are welded to the second steel plate 53d. The cantilever plate steel bars 53f are overlapped or welded to the steel bar skeleton in the cantilever plate. The cantilever plate can be a cantilever balcony, a cantilever air conditioning panel, a rain shield, or other components.

[0145] Preferably, the node connector 56 is a connecting pipe, a connecting rod, a honeycomb plate or a corrugated plate; when the node connector 56 is a connecting pipe, the connecting pipe is filled with a heat insulating material. More preferably, the node connector 56 and the annular sealing plate 54 are made of fiber reinforced composite material or plastic. Among them, the heat insulating material is rock wool or foamed polyurethane.

[0146] In the above technical solution, preferably, the first metal panel 53a is a carbon structural steel plate, a low alloy high strength structural steel plate or a stainless steel plate; the second metal panel 53b is a carbon structural steel plate, a low alloy high strength structural steel plate or a stainless steel plate.

[0147] The annular sealing plate 54 includes 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 the circumferential direction; the bottom sealing plate and the top sealing plate are arranged opposite to each other; the first side sealing plate and the second side sealing plate are arranged opposite to each other.

[0148] During construction, the first metal panel 53a, the second metal panel 53b, the node connector 56 and the annular sealing plate 54 are fixedly connected together, and a process hole is reserved on the annular sealing plate 54; steel bar pads are welded on the first metal panel 53a and the second metal panel 53b respectively; steel bars are welded on each steel bar pad; the steel bars located on one side of the first metal panel 53a or the second metal panel 53b are placed in the formwork (floor or cantilever formwork); the steel bars are tied to the steel bars in the formwork to form a steel bar skeleton; concrete is poured into the formwork; insulation material is filled into the sealed cavity through the process hole and squeezed densely; the process hole is sealed to form a prefabricated component with anti-cold and hot bridge nodes for the floor.

[0149] The anti-cold and heat bridge nodes of the floor structure of the present invention can be prefabricated, and have the characteristics of simple construction and small on-site workload; rock wool, foamed polyurethane and other insulation materials are filled in the middle of the sandwich panel, and at the same time, the insulation material is embedded in the sealed cavity of the sandwich panel to avoid the formation of thermal bridges in the sandwich panel, that is, a broken bridge structure is formed between the floor slabs and the cantilever slabs on both sides of the indoor and outdoor areas, so that the thermal insulation effect is good, the durability of the insulation material is good and there is no risk of falling off; the steel bars are welded to the metal panels through steel bar pads, and a plurality of node connectors are fixed between the metal panels, so that the structural strength of the anti-cold and heat bridge nodes is high and the force-bearing performance is good.

[0150] Example 2

[0151] This embodiment discloses a combined structure residential system, which is basically the same as the second embodiment, except that:

[0152] like Fig.25 As shown, the combined structural housing system includes a restraining support member 60; both ends of the restraining support member 60 are fixedly connected to the middle part of the column and the middle part of the steel beam respectively.

[0153] like Fig.26 As shown, the restraint support 60 includes an outer restraint sleeve 61 and an inner core 62 , a restraint ring 63 and a restraint rod 64 , all of which are disposed in the outer restraint sleeve.

[0154] The restraining rod 64 and the inner core 62 are both arranged along the length direction of the outer restraining sleeve. The restraining ring 63 is fixed to the outer restraining sleeve and is sleeved outside the inner core 62 and the restraining rod 64 to fix the inner core 62 and the restraining rod 64.

[0155] As shown in FIG26 , the inner core 62 is in the shape of a long strip; restraining rods 64 are provided on both sides of the inner core 62; or Fig. 27 As shown, the inner core 62 is in the shape of a long strip with a cross-shaped cross section, and restraint rods 64 are provided at four intervals of the cross.

[0156] The constraint ring 63 includes a plurality of annular constraint steel bars sleeved outside the inner core 62 and the constraint rod 64; the plurality of annular constraint steel bars are arranged in sequence along the length direction of the constraint rod 64. In addition, the constraint ring 63 can also be an annular constraint steel bar spirally wound outside the inner core 62. The annular constraint steel bar is preferably a plain round steel bar. The constraint rod 64 is preferably a steel bar; the steel bar is welded and fixed to the plain round steel bar. An anti-friction layer is provided between the constraint rod 64 and the inner core 62 to reduce the friction resistance between the constraint rod 64 and the inner core 62.

[0157] like Fig.28 As shown, the outer restraining sleeve 61 includes a mortar layer 61a, and a reinforcement structure is provided in the mortar layer 61a; the reinforcement structure is a steel mesh 61b (or a glass fiber mesh); the steel mesh is arranged along the circumference of the outer restraining sleeve.

[0158] like Fig.25 As shown, the two ends of the inner core 62 are respectively provided with connecting ends 65 extending out of the outer constraint sleeve; the width of the connecting ends is greater than the width of the inner core 62 in the outer constraint sleeve (the middle width of the inner core 62); and mounting holes are provided on the connecting ends. The constraint support is connected to the steel beam and the column through the mounting holes on the connecting ends.

[0159] The buckling restraint support in the present invention, the restraint rod 64 and the restraint ring 63 restrain the buckling of the inner core 62, and limit the local buckling of the inner core 62, so that the performance of the core plate can be fully exerted. At the same time, during processing, it is only necessary to put the restraint ring 63 on the outside of the inner core 62 and the restraint rod 64 for fixing, which has low requirements. This operation does not require special factory processing, so it is simple to process and easy to operate. The restraint rod 64 is made of steel rod, the inner core 62 is made of steel core, and the restraint ring 63 is made of plain round steel bar, which are all commonly used materials, low cost, and good economy. The outer restraint sleeve is made of mortar to avoid rusting of the anti-buckling support and is maintenance-free during the service life.

[0160] Example 3

[0161] This embodiment discloses a combined structure residential system, which is basically the same as the second embodiment, except that:

[0162] like Figure 29-Figure 32 As shown, the present embodiment provides a column 30, which includes a round steel tube 31 and 2-4 T-steels 32; concrete 33 is poured in the round steel tube 31, and a plurality of T-steels 32 are arranged at intervals along the circumference of the round steel tube 31, and the web and the flange of the T-steel 32 are fixedly connected to the outer wall of the round steel tube 31 at one end; the web 32b of the T-steel 32 is located on the extension line of the diameter of the round steel tube 31, and bolt holes are arranged on the flange 32a.

[0163] Among them, the plurality of T-shaped steels 32 are arranged in various ways, such as Fig.29 As shown, there are two T-shaped steels 32, and the webs of the two T-shaped steels 32 are located on the same diameter of the round steel pipe 31 to form a straight line. Fig.31 As shown, there are two T-shaped steels 32, and the webs of the two T-shaped steels 32 are vertical to form an L shape. Fig.32 As shown, there are three T-shaped steels 32, and the webs of the three T-shaped steels 32 are arranged in a T shape. Fig.30 As shown, there are four T-shaped steels 32, and the webs of the four T-shaped steels 32 are arranged in a cross shape.

[0164] The column 30 provided by the present invention is composed of a round steel tube 31 and a plurality of T-shaped steels 32. The concrete of the round steel tube 31 is located near the neutral axis and mainly bears the axial force, giving full play to the advantages of the good axial pressure performance of the concrete of the round steel tube 31. The T-shaped steel 32 is arranged away from the neutral axis, the force arm is increased, and the bending bearing capacity is greatly improved, thereby greatly improving the bending mechanical performance. At the same time, the T-shaped steel 32 is located outside for easy connection, and the beam-column node and the vertical splicing node of the column and the column are all bolted, that is, the column 30 is connected to the steel beam and the upper and lower columns by bolts. When connecting, it can also avoid that the steel column is exposed outside the wall, and the purpose of hiding the column in the wall is achieved. The node structure is simple, the node plate does not extend into the round steel tube 31, and the quality of concrete pouring is easy to guarantee. In addition, the column 30 of the present invention is processed by finished profiles such as hot-rolled profiles and cold-bent round steel tubes, which is simple to process, can be automatically produced, and has low production cost.

[0165] In the above solution, preferably, a first circular exhaust hole (not shown) is provided on the side wall or both ends of the round steel pipe 31; the diameter of the first circular exhaust hole is greater than or equal to 12 mm. In case of fire, the first circular exhaust hole is used to discharge water vapor in the concrete in the round steel pipe 31 to prevent the round steel pipe 31 from bursting.

[0166] Example 4

[0167] This embodiment is basically the same as Embodiment 3, except that:

[0168] like Fig.33 As shown, the column 30 is embedded in the wall S4; the T-shaped steel flange of the column 30 close to the outdoor side is the outer flange 3a, and the outer flange 3a is arranged 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); several layers of glass wool boards S10 are laid on the outside of the anti-corrosion layer of the outer flange, which are used to block the column 30 from acting as a thermal bridge to transfer heat flow between the indoor and outdoor sides of the wall.

[0169] While effectively eliminating the thermal bridge effect at the column 30 and improving the overall thermal insulation performance of the building, several layers of glass wool boards S10 can effectively reduce the impact of external temperature changes on the external anti-corrosion layer and increase the effective anti-corrosion period of the anti-corrosion layer.

[0170] On the projection plane parallel to the wall S4, the size of the glass wool board S10 does not cover the entire wall S4, and the size of the glass wool board S10 only covers all or part of the column 30. Different from the insulation board or insulation layer arranged on the outside of the wall as a whole, the purpose of the glass wool board in the present invention is to block the heat bridge at the column and solve the heat conduction problem at the local part of the column.

[0171] The invention has remarkable thermal insulation effect and low cost, can effectively reduce the heat transfer caused by the column as a thermal bridge, eliminate the heat flow concentration on both sides of the wall S4 at the column, and greatly improve the thermal insulation performance of the wall S4, so that the wall S4 can meet the requirements of 75% energy saving of residential buildings and heat transfer coefficient <0.45W / (m 2 K) green and energy-saving design requirements.

[0172] And, on the projection plane parallel to the wall S4, the left and right ends of the glass wool board S10 protrude from the outer flange 3a and are embedded in the wall S4. The glass wool board S10 appropriately extends on the left and right sides of the outer flange 3a, further improving the blocking performance of the heat bridge heat transfer of the column and improving the thermal insulation performance of the wall S4. The glass wool board S10 is embedded in the wall S4, and is not prone to edge lifting and bulging, and the installation is more secure.

[0173] In the embodiment, two layers of glass wool boards are arranged on the outdoor side of the column in the thickness direction of the wall S4; the two adjacent layers of glass wool boards include an inner layer of glass wool board S11 close to the column and an outer layer of glass wool board S12 away from the column. On the projection plane parallel to the wall S4, the left and right sides of the outer layer of glass wool board S12 protrude from the inner layer of glass wool board S11; on the horizontal cross section of the wall S4, the two layers of glass wool boards are respectively embedded on the wall S4 in an inverted pyramid (staircase) shape.

[0174] On the horizontal section of wall S4, several layers of glass wool boards are arranged in a stepped (inverted pyramid) shape. The heat conduction efficiency of the column is normally distributed. The heat transfer in the center area facing the column is the most intensive, which is the column thermal bridge area, while the heat transfer on the left and right sides gradually decreases, which are the thermal bridge influence areas. Fig.14 The length of the middle arrow reflects the amount of heat transfer. Several layers of glass wool panels are arranged in an inverted pyramid on one side of the column, which is more in line with the transmission law of normal distribution of heat in the thermal bridge, thereby effectively blocking the heat transfer on the front of the column and also blocking the heat scattering on both sides of the column.

[0175] Furthermore, a plurality of layers of glass wool boards are arranged in an inverted pyramid shape, and the left and right sides of each glass wool board can be embedded in the wall S4, thereby ensuring that each glass wool board will not warp or bulge within the building life of several decades after installation. Under the premise of ensuring that the building energy-saving design standards are met, the building energy-saving cost is reduced. The present invention can be widely used in the field of external wall insulation of steel frame structures.

[0176] If a single-layer glass wool board is to achieve the same thermal bridge blocking effect, the thickness of the glass wool board needs to be increased. However, an overly thick glass wool board is often non-standard and needs to be customized by the manufacturer, which will increase the construction cost. In addition, an overly thick glass wool board is too heavy and inconvenient to install, and it is easy to fall off after installation. In addition, when a single-layer glass wool board meets the thermal bridge column insulation effect, there will be excessive insulation measures in the corresponding area of ​​the thermal bridge affected area, resulting in material waste.

[0177] The present application can flexibly use 2-6 layers of conventional glass wool boards according to design requirements, and the thickness of each layer of glass wool boards is greatly reduced, which is convenient for installation. After installation, the glass wool boards are not easy to fall off and are more stable. In addition, there is no excessive waste of materials, which is a green and energy-saving construction method.

[0178] 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 arranged in geometric progression, wherein the ratio range is preferably 1.6 to 2. Taking the 3-layer glass wool board as an example, the width of the inner glass wool board is 1.6 to 2 times the width of the outer flange 3a, the width of the middle glass wool board is 1.6 to 2 times the width of the inner glass wool board, and the width of the outer glass wool board is 1.6 to 2 times the width of the middle glass wool board.

[0179] The inner glass wool board S11 is laid on the outer side of the outer flange 3a and the wall S4 by using adhesive, and the outer glass wool board S12 is laid on the inner glass wool board S11 and the wall S4 by using adhesive 5.

[0180] In addition, a connecting anchor bolt is provided between the wall S4 and the glass wool board S10. After the glass wool board is attached to the wall by adhesive, it is further fastened by the connecting anchor bolt. The glass wool board is fixed by both adhesive and anchor bolt to ensure the overall performance of the insulation layer and the wall.

[0181] More preferably in this embodiment, the T-shaped steel flange close to the indoor side in the column 30 is the inner flange 3b, the inner flange 3b is arranged parallel to the wall surface of the wall, and the outer end face of the inner flange 3b is coated with an inner anti-corrosion layer; and no insulation material is laid on the outside of the inner anti-corrosion layer of the inner flange 3b.

[0182] Since the temperature and humidity in the room do not change much and are relatively stable, it is beneficial for the inner anti-corrosion layer to remain effective for a long time. By utilizing the thermal bridge effect of the column itself and combining it with the glass wool board outside the outer flange to block the thermal bridge, the temperature fluctuations at the outer anti-corrosion layer of the outer flange 3a are greatly reduced, thereby more effectively extending the effective life of the outer anti-corrosion layer, thereby improving the anti-corrosion performance of the column as a whole.

[0183] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floor structure, characterized in that: include: Floor slab and cantilever slab; in a horizontal projection plane, the floor slab is arranged indoors, and the cantilever slab is arranged outdoors; An interval is arranged between two adjacent floor slabs, and a steel bar skeleton is arranged in the interval; an installation notch is arranged at one end of the floor slab located at the splicing surface; the bottom of the installation notch is vertically fixed with floor slab ring bars in sequence and intervals along the length direction of the floor slab splicing surface; the steel bar skeleton includes connecting horizontal bars arranged along the length direction of the splicing surface and a plurality of connecting ring bars fixed to the connecting horizontal bars; the connecting ring bars are parallel to the floor slab ring bars; the plurality of connecting ring bars and the plurality of floor slab ring bars on the two floor slabs are staggered; the connecting ring bars and the floor slab ring bars are poured with concrete; The floor slab and the cantilever slab are connected via an anti-cold and heat bridge node; the anti-cold and heat bridge node comprises a sandwich slab, a first steel plate and a second steel plate; the sandwich slab comprises a first metal panel, a second metal panel, a plurality of node connectors, an annular sealing plate and a heat insulating material; the annular sealing plate is fixedly connected between the first metal panel and the second metal panel which are arranged opposite to each other, and forms a sealed cavity with the first metal panel and the second metal panel; one end of the node connector is fixedly connected to the first metal panel, and the other end is fixedly connected to the second metal panel, and is arranged in the sealed cavity; the heat insulating material is filled in the sealed cavity; The first steel bar pad is welded on the surface of the first metal panel facing away from the second metal panel, and a plurality of floor steel bars extending toward the indoor side and entering the floor slab are welded on the first steel bar pad; The second steel bar pad is welded to the surface of the second metal panel on one side facing away from the first metal panel, and a plurality of cantilever plate steel bars extending toward the outdoor side and entering the cantilever plate are welded to the second steel bar pad.

2. The floor structure according to claim 1, characterized in that: The node connecting piece is a connecting pipe, a connecting rod, a honeycomb plate or a corrugated plate.

3. The floor structure according to claim 2, characterized in that: The connecting pipe is filled with heat insulating material.

4. The floor structure according to claim 1, characterized in that: The floor slab comprises a bottom plate and a lightweight filling body on the bottom plate; the bottom plate is provided with bottom horizontal ribs perpendicular to the connecting horizontal ribs, and the bottom horizontal ribs are located at one end of the splicing surface and are bent toward the other end into a ring shape to form the floor slab ring ribs.

5. The floor structure according to claim 4, characterized in that: A steel truss is provided at one end of each base plate away from the splicing surface; a steel mesh is provided at the upper ends of the two lightweight filling bodies, and both ends of the steel mesh are respectively connected to the steel trusses of the two floor slabs; the steel trusses and the steel mesh are poured with concrete.

6. The floor structure according to claim 4, characterized in that: A first lap steel bar is provided at the joint of the two floor slabs; two ends of the first lap steel bar are respectively located on the bottom plates of the two floor slabs.

7. The floor structure according to claim 4, characterized in that: An I-shaped steel beam is provided at the joint of the two floor slabs; the web of the steel beam is vertically arranged; and the connecting ring reinforcement is fixed to the web of the steel beam.

8. The floor structure according to claim 7, characterized in that: Steel plates are fixed in sequence along the length direction of the web of the steel beam at both sides; the steel plates on both sides of the web of the steel beam correspond to each other; the steel plates are provided with through holes; and the connecting ring reinforcement is passed through the through holes of the two correspondingly arranged steel plates.

9. The floor structure according to claim 8, characterized in that: The lower end of the connecting ring rib is open, and the two ends of the opening are respectively bent downward and vertically pass through the through holes at both ends of the steel plate; A steel truss is fixed on one side of the bottom plate, and a connecting ring bar is fixed on the other side opposite thereto, and a lightweight filling body is placed between the steel truss and the connecting ring bar on the bottom plate to form the floor slab; The top steel bars are tied on the top of the two lightweight filling bodies to form a steel mesh, and both ends of the steel mesh are overlapped on the steel trusses of the two floor slabs; concrete is poured on the steel mesh and the steel trusses.

10. A combined structure residential system with a floor structure according to any one of claims 1 to 8, characterized in that: include: Steel beams, columns, shear walls and the floor slab.

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