Prefabricated floor assembly type connecting structure and assembly type building thereof

Abstract

The application relates to the technical field of building, in particular to a prefabricated floor assembly type connecting structure and an assembly type building thereof. The prefabricated floor assembly type connecting structure comprises a T-shaped beam and two prefabricated floors, the prefabricated floor is provided with a reserved groove, the reserved groove is provided with protruding steel bars, the T-shaped beam is provided with overlapping steel bars, and the two prefabricated floors are fixed by pouring concrete into the reserved groove. The two prefabricated floors are connected and fixed through the connecting mode of the protruding steel bars, the overlapping steel bars and the T-shaped beam. When the construction is carried out, the splicing of the prefabricated floors can be completed by pouring concrete into the reserved groove, the operation is simple, the construction efficiency is high, and the connecting strength at the splicing joint is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building, in particular to a prefabricated floor assembly type connecting structure and an assembly type building. BACKGROUND

[0002] With the rapid development of China's economy, the construction industry has also developed rapidly. In the construction industry, prefabricated floors are usually spliced and fixed by using formwork to pour concrete, which is complicated and inefficient. SUMMARY

[0003] The present application relates to the technical field of building, in particular to a prefabricated floor assembly type connecting structure and an assembly type building.

[0004] To solve the above technical problems, the prefabricated floor assembly type connecting structure provided by the present application comprises a T-shaped beam and two prefabricated floors; one end of each prefabricated floor is provided with a reserved slot; a protruding steel bar is fixed horizontally in the reserved slot; the reserved slots of the two prefabricated floors are butted; the web of the T-shaped beam is located between the two prefabricated floors; the web of the T-shaped beam is provided with a lap steel bar; the two ends of the lap steel bar are respectively connected with the protruding steel bars in the two reserved slots; and the reserved slots are filled with concrete to fix the protruding steel bars and the web of the T-shaped beam.

[0005] Further, the web of the T-shaped beam is provided with a steel bar hole; and the lap steel bar is arranged in the steel bar hole.

[0006] Further, a plurality of lap steel bars are arranged in sequence and at intervals along the web of the T-shaped beam; a plurality of protruding steel bars are arranged in sequence and at intervals on each prefabricated floor; and the plurality of lap steel bars correspond one-to-one to the plurality of protruding steel bars on the prefabricated floor.

[0007] Further, the two ends of the lap steel bar are respectively connected to the protruding steel bars in the two reserved slots.

[0008] Further, the flange of the T-shaped beam is in close contact with the bottom surface of the two prefabricated floors.

[0009] Further, the reserved slot is located at the top of the prefabricated floor.

[0010] Further, the reserved slot is rectangular.

[0011] Further, one end of the protruding steel bar is located in the prefabricated floor, and the other end is located in the reserved slot.

[0012] Further, the prefabricated floor and the web of the T-shaped beam are both provided with a threading hole.

[0013] The prefabricated floor assembly type connecting structure provided by the application connects and fixes two prefabricated floors through the connecting mode of the protruding steel bars, the overlapping steel bars and the T-shaped beams, and the splicing of the prefabricated floors can be completed by pouring concrete in the reserved groove during construction, so that the operation is simple, the construction efficiency is high, and the connecting strength at the splicing joint is high.

[0014] In addition, the application further discloses an assembly type building using the prefabricated floor assembly type connecting structure, which further comprises a reinforced steel pipe concrete column used for supporting the T-shaped beams and the prefabricated floors; the reinforced steel pipe concrete column comprises a steel pipe and concrete poured in the steel pipe; the steel pipe is provided with a reinforcing rod; and the reinforcing rod is used for enhancing the connecting strength of the steel pipe and the concrete.

[0015] Further, the reinforcing rod is a bolt; and the steel pipe is provided with a bolt hole on the side wall.

[0016] Further, the two ends of the reinforcing rod are connected to the opposite side walls of the steel pipe, respectively.

[0017] Further, the reinforcing rod is perpendicular to the side wall of the steel pipe.

[0018] Further, a plurality of reinforcing rods are sequentially and spacedly arranged along the length direction of the steel pipe.

[0019] Further, the reinforcing rod is connected to the steel pipe, and then the concrete is poured to form the steel pipe concrete column.

[0020] Further, the application further comprises a steel pipe pile used for supporting the building.

[0021] Preferably, the steel pipe pile is provided with a bearing platform or other foundation component at the top, and the connecting reinforced steel pipe concrete column is arranged on the foundation component.

[0022] Further, the reinforced steel pipe concrete column is provided with a corbel, and the T-shaped beam is connected to the reinforced steel pipe concrete column through the corbel.

[0023] Further, the cross section of the corbel is T-shaped, and the web and the flange of the corbel are fixedly connected to the web and the flange of the T-shaped beam, respectively.

[0024] Preferably, the flange of the corbel is welded to the flange of the T-shaped beam, and the web of the corbel is fixedly connected to the web of the T-shaped beam through a bolt.

[0025] Preferably, the flange thickness of the corbel is greater than the flange thickness of the T-shaped beam, the flange of the corbel is provided with a sunken platform, and the front end of the flange of the T-shaped beam is overlapped on the sunken platform.

[0026] The present application places prefabricated floor slabs on the upper surfaces of the middle flanges on both sides of the king-shaped steel beam, the upper flange of the steel beam is at the same height as the upper surface of the prefabricated floor slab, the overall height of the floor system is reduced, so that the building floor height can be reduced; on the other hand, the prefabricated floor slabs avoid a large amount of work such as on-site formwork, steel bar binding and concrete pouring, have the advantages of fast construction speed, high industrialization degree and energy saving and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the following description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 The prefabricated floor slab assembly type connecting structure provided for embodiment 1 of the present application is shown in the schematic view.

[0029] Figure 2 The structure schematic view of the T-shaped beam in the prefabricated floor slab assembly type connecting structure shown in the figure is shown. Figure 1

[0030] Figure 3 The structure schematic view of the T-shaped beam when the threading hole is circular is shown.

[0031] Figure 4 The structure schematic view of the T-shaped beam when the threading hole is square is shown.

[0032] Figure 5 The structure schematic view of the prefabricated floor slab when the threading hole is circular is shown.

[0033] Figure 6 The structure schematic view of the prefabricated floor slab when the threading hole is square is shown.

[0034] Figure 7 The structure schematic view of the prefabricated floor slab when the threading hole is square is shown.

[0035] Figure 8 The cross-sectional schematic view of the steel pipe concrete column provided for embodiment 2 of the present application is shown.

[0036] Figure 9 The longitudinal cross-sectional schematic view of the steel pipe concrete column provided for embodiment 2 is shown.

[0037] Figure 10 The building steel pipe pile structure schematic view provided for embodiment 3 is shown.

[0038] Figure 11 The structure schematic view of the rotatable stiffening rib assembly in embodiment 3 is shown. ​

[0039] Figure 12 Structure diagram of the hollow steel pipe in Example 3;

[0040] Figure 13 Structure diagram of the hollow steel pipe in Example 3;

[0041] Figure 14 Structure diagram of the hollow steel pipe in Example 3;

[0042] Figure 15 Structure diagram of the hollow steel pipe in Example 3;

[0043] Figure 16 Structure diagram of the hollow steel pipe in Example 3; DETAILED DESCRIPTION

[0044] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] The present application will be further explained and described below in conjunction with specific embodiments.

[0048] Example 1

[0049] As Figures 1 to 6As shown, the prefabricated floor assembly type connecting structure provided by the embodiment includes a T-shaped beam 2 and two prefabricated floors 1; one end of the prefabricated floor 1 is provided with a reserved groove; the reserved groove is horizontally fixed with an extended steel bar 6; the reserved grooves of the two prefabricated floors 1 are butted; the web plate 21 of the T-shaped beam 2 is located between the two prefabricated floors 1; the web plate 21 of the T-shaped beam 2 is provided with a lap steel bar 5; the two ends of the lap steel bar 5 are respectively lapped with the extended steel bars 6 in the two reserved grooves; and the reserved groove is poured with concrete 3 to fix the extended steel bars 6, the lap steel bar 5 and the web plate 21 of the T-shaped beam 2. In this way, the two prefabricated floors 1 are connected and fixed, and during construction, the pouring of the concrete 3 in the reserved groove can complete the splicing of the prefabricated floor 1, which is simple in operation, high in construction efficiency and high in connecting strength at the splicing joint. The concrete 3 can be UHPC or ECC material. The lap steel bar 5 and the extended steel bar 6 are mechanically connected. The application is especially suitable for the connection of hollow floors.

[0050] The flange 22 of the T-shaped beam 2 closely abuts the bottom surface of the two prefabricated floors 1, that is, the web plate 21 of the T-shaped beam 2 is vertically arranged, and the flange 22 will closely abut at the splicing joint, so that the connecting strength is high.

[0051] As shown in Figure 3 and Figure 4 The web plate 21 of the T-shaped beam 2 is provided with a steel bar hole 7; and the lap steel bar 5 is arranged in the steel bar hole 7. The lap steel bar 5 is first arranged in the steel bar hole 7, the reserved grooves of the two prefabricated floors 1 are butted, and then the concrete 3 is poured into the reserved groove. The arrangement of the steel bar hole 7 facilitates the pre-arrangement of the lap steel bar 5 on the web plate 21 of the T-shaped beam 2.

[0052] A plurality of lap steel bars 5 are arranged in sequence and at intervals along the web plate 21 of the T-shaped beam 2; a plurality of extended steel bars 6 are arranged in sequence and at intervals on each prefabricated floor 1; and the plurality of lap steel bars 5 correspond one-to-one with the plurality of extended steel bars 6 on the prefabricated floor 1, so that the connecting strength at the splicing joint is further enhanced.

[0053] The two ends of the lap steel bar 5 are respectively lapped on the extended steel bars 6 in the two reserved grooves. During construction, the web plate 21 of the T-shaped beam 2 is located between the two prefabricated floors 1, and the lap steel bar 5 is naturally lapped on the extended steel bar 6, which is convenient for construction.

[0054] The reserved groove is located at the top of the prefabricated floor 1. After the prefabricated floor 1 and the T-shaped beam 2 are spliced, the concrete 3 is poured into the reserved groove from the top to the surface of the prefabricated floor 1, so that the fixing of the extended steel bar 6, the lap steel bar 5 and the web plate 21 can be realized. The reserved groove is located at the top, which is convenient for the construction personnel to pour the concrete 3.

[0055] The shape of the reserved groove can be various, and preferably, the reserved groove is rectangular, which is convenient for processing.

[0056] One end of the protruding steel bar 6 is located in the prefabricated floor 1, and the other end is located in the reserved slot. After the protruding steel bar 6 is fixed with the lap steel bar 5, the integrity of the prefabricated floor 1 and the T-shaped beam 2 is enhanced, and the overall connection strength is enhanced.

[0057] As shown in Figures 3 to 6 , the prefabricated floor 1 and the web 21 of the T-shaped beam 2 are both provided with a threading hole 4, and the water heating and electrical pipelines can be threaded in the threading hole 4, which is convenient for line connection. Preferably, the threading holes 4 on the prefabricated floor 1 and the web 21 of the T-shaped beam 2 are aligned. A plurality of threading holes 4 are sequentially and spaced apart along the length direction of the web 21. The cross-sectional shape of the threading hole 4 can be circular or square, etc.

[0058] Embodiment 2

[0059] The embodiment discloses a fabricated building, which refers to Figure 7 , and further comprises a connecting reinforced steel pipe concrete column 10 for supporting the T-shaped beam 2 and the prefabricated floor 1; the bottom of the connecting reinforced steel pipe concrete column 10 abuts against a pile body support, and the support bottom is provided with a steel pipe column 100.

[0060] As shown in Figure 8 , the connecting reinforced steel pipe concrete column provided by the embodiment comprises a steel pipe 13 and concrete 11 poured in the steel pipe 13; the steel pipe 13 is provided with a reinforcing rod; the reinforcing rod is used for enhancing the connection strength of the steel pipe 13 and the concrete 11. Since the reinforcing rod enhances the connection strength between the steel pipe 13 and the concrete 11, the integrity of the steel pipe 13 and the concrete 11 is enhanced, and the phenomenon that the concrete 11 and the steel pipe 13 wall are separated is avoided.

[0061] Preferably, as shown in Figure 9 , the reinforcing rod is a bolt 12; the steel pipe 13 is provided with a bolt hole 14 on the side wall. The bolt 12 is arranged in the bolt hole 14 on the side wall of the steel pipe 13, which facilitates installation and use while achieving the reinforcing connection shape. Preferably, the bolt 12 is a lengthened ribbed bolt.

[0062] The two ends of the reinforcing rod are connected with the opposite side walls of the steel pipe 13 respectively, so that the reinforcing rod connects the two side walls and the concrete 11 between the side walls closely. This arrangement mode makes the reinforcing rod act on the opposite side walls of the steel pipe 13, and improves the reinforcing effect of the reinforcing rod. The reinforcing rod is perpendicular to the side wall of the steel pipe 13, which facilitates the arrangement of the reinforcing rod, and the perpendicular arrangement further improves the force of the reinforcing rod acting on the steel pipe 13.

[0063] Embodiment 3

[0064] Referring to Figure 7As shown, the embodiment discloses a prefabricated building, which further comprises: a steel pipe pile 100 for building support. The steel pipe pile 100 is provided with a bearing platform and other foundation components at the top, and a connection reinforced steel pipe concrete column 10 is arranged on the foundation components.

[0065] Referring to Figures 10-14 As shown, the steel pipe pile 100 comprises: a hollow steel pipe 110 and a rotatable reinforcing rib assembly 120; the rotatable reinforcing rib assembly 120 comprises: a support 122 and a rib plate 121; the support 122 is an arc-shaped plate, and the rib plate 121 is fixed on the outer side of the support 122; the hollow steel pipe 110 is provided with a pre-opening 111 on the pipe wall; the rotatable reinforcing rib assembly 120 is swingably inserted into the hollow steel pipe 110; the rotatable reinforcing rib assembly 120 is forced to rotate by external force, the rib plate 121 extends out of the hollow steel pipe 110 from the pre-opening 111, and the outer side of the support 122 abuts against the inner wall of the hollow steel pipe 110.

[0066] The application sets the rotatable reinforcing rib assembly 120 in the steel pipe pile 100, after the steel pipe pile 100 is inserted into the set bore hole, the rotatable reinforcing rib assembly 120 is forced to swing by the gravity of the rod or the added cement, the rib plate 121 extends out of the hollow steel pipe 110 from the pre-opening 111, and a reinforcing rib plate 121 is formed, thereby increasing the support capacity of the steel pipe pile 100. It has the characteristics of convenient construction, small destruction, etc.

[0067] The hollow steel pipe 110 is provided with a plurality of pre-openings 111 on the pipe wall and spaced apart along the hollow steel pipe 110 in the axial direction. At least before the rotatable reinforcing rib assembly 120 is forced to rotate by external force, the rotatable reinforcing rib assembly 120 is arranged above the pre-opening 111, and the rotatable reinforcing rib assembly 120 swings from top to bottom. The arc-shaped plate of the support 122 needs to meet the condition of swinging from top to bottom in the hollow steel pipe 110. The rib plate 121 is in a crescent shape and is vertically welded on the outer side of the support 122.

[0068] The support 122 comprises a pivoting end and a swinging end, and the pivoting end is provided with a pivoting shaft 123 pivoted to the inner wall of the hollow steel pipe 110. The inner wall of the hollow steel pipe 110 and above the pre-opening 111 are provided with a hook 114, the hook 114 has an upward opening, and when the rotatable reinforcing rib assembly 120 swings from top to bottom, the pivoting shaft 123 of the support 122 is clamped into the hook 114, thereby forming a pivoting structure.

[0069] In the direction perpendicular to the rib plate 121, the pivoting shaft 123 is slidably arranged on the support 122, and a return spring is arranged between the support 122 and the pivoting shaft 123; the return spring is in a compressed state and tends to force the pivoting shaft 123 to move away from the swinging end.

[0070] Preferably, the rotatable stiffening rib assembly 120 is pre-installed at the bottom of the hollow steel pipe 110, and the clasp 114 is arranged on the moving path of the pivot shaft 123. The top of the support 122 is connected with one end of a steel bar or a rope 125, and the other end of the steel bar or the rope 125 extends out of the top opening of the hollow steel pipe 110. When the rib plate 121 is needed to be reinforced, the rotatable stiffening rib assembly 120 can be pulled to a set position by the steel bar or the rope, and the pivot shaft 123 on the support 122 is automatically retracted when encountering the back of the clasp 114, so that the support 122 slides over the clasp 114 to be above the clasp 114. The bar or the cement weight forces the support 122 to move downward, and the pivot shaft 123 slides into the clamping groove of the clasp 114 to form a pivot structure.

[0071] When a plurality of rotatable stiffening rib assemblies 120 are pre-installed at the bottom of the hollow steel pipe 110, the supports 122 of two adjacent rotatable stiffening rib assemblies 120 are connected by a soft rope 126, and the length of the soft rope 126 is the same as the interval of the pre-holes 111. First guide grooves 112 are arranged on the inner wall of the hollow steel pipe 110 and on the opposite side of the pre-holes 111, and the first guide grooves 112 are arranged along the axial direction of the hollow steel pipe 110. The swing end is provided with a guide block (not shown) which is in sliding guide cooperation with the first guide grooves 112.

[0072] In addition, the pivot end of the support 122 is provided with a fork head, the fork head is provided with a U-shaped groove, the two side walls of the U-shaped groove are provided with sliding grooves, and the two ends of the pivot shaft 123 are slidably inserted into the sliding grooves. The reset spring can be arranged in the sliding groove, and the two ends of the reset spring are connected with the pivot shaft 123 and the support 122 respectively. Second guide grooves 113 are arranged on the inner wall of the hollow steel pipe 110 and on one side of the pre-holes 111, the second guide grooves 113 are arranged opposite to the first guide grooves 112, the fork head is slidably inserted into the second guide grooves 113, and the clasp 114 is arranged inwardly protruding along the radial direction of the steel pipe in the second guide grooves 113. In the circumferential direction of the hollow steel pipe 110, two rows of pre-holes 111 are symmetrically arranged, and each row includes a plurality of pre-holes 111 which are arranged at intervals along the axial direction.

[0073] The structure of the present application is exquisite and more flexible, and the stiffening ribs can be increased or decreased in number at any time according to the geological conditions. The damage to the surrounding ground and buildings during construction is small.

[0074] Example 4

[0075] This embodiment is basically the same as examples 1-3, except that:

[0076] Reference Figures 15-16As shown, the steel pipe concrete column 10 is provided with a corbel 30, and the T-shaped beam is connected with the steel pipe concrete column 10 through the corbel 30. The cross section of the corbel 30 is T-shaped, and the corbel web plate 32 and the corbel flange 31 of the corbel 30 are fixedly connected with the web plate 21 and the flange 22 of the T-shaped beam 2 respectively. Preferably, the corbel flange 31 is welded and fixed with the flange 22 of the T-shaped beam 2, and the corbel web plate 32 is fixedly connected with the web plate 21 of the T-shaped beam 2 through bolts.

[0077] Preferably, the thickness of the corbel flange 31 is greater than the thickness of the flange 22 of the T-shaped beam, and the corbel flange 31 is provided with a sunken platform 33, and the front end of the flange 22 of the T-shaped beam is overlapped on the sunken platform 33.

[0078] Further preferably, the steel pipe of the steel pipe concrete column 10 is provided with a partition plate 34 at the corresponding height position of the corbel flange 31 respectively, and the partition plate 34 is provided with a through hole for the concrete to pass through.

[0079] Compared with the prior art, the connection strength between the beam and the column is greatly enhanced, and the construction efficiency is high, which ensures that the node is a strong node and a weak component.

[0080] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A prefabricated building employing a prefabricated floor slab assembly connection structure, characterized in that, The precast floor slab assembly connection structure includes a T-beam and two precast floor slabs; The precast floor slab has a reserved groove at one end; a protruding steel bar is horizontally fixed in the reserved groove; the reserved grooves of the two precast floor slabs are joined together; the web of the T-beam is located between the two precast floor slabs. The web of the T-beam is provided with lapped reinforcing bars; the two ends of the lapped reinforcing bars are respectively lapped with the protruding reinforcing bars in the two reserved slots; concrete is poured into the reserved slots to fix the protruding reinforcing bars, the lapped reinforcing bars and the web of the T-beam. It also includes reinforced steel-concrete composite columns and steel pipe piles for supporting the T-beams and precast floor slabs; the top of the steel pipe piles is provided with foundation components, and the reinforced steel-concrete composite columns are connected to the foundation components; The steel pipe pile includes: a hollow steel pipe and a rotatable stiffening rib assembly; the rotatable stiffening rib assembly includes: a support member and a rib plate; the support member is an arc-shaped plate, and the rib plate is fixed on the outer side of the support member; the hollow steel pipe has pre-drilled holes in its wall; the rotatable stiffening rib assembly is rotatably inserted into the hollow steel pipe. External force is used to force the rotatable stiffening rib assembly to rotate, with the rib plate extending out of the pre-drilled hole into the hollow steel tube, and the outer side of the support member abutting against the inner wall of the hollow steel tube; The support component includes a pivot end and a swing end. The pivot end is provided with a pivot shaft that is pivotally connected to the inner wall of the hollow steel tube. Hooks are provided on the inner wall of the hollow steel tube and above the pre-drilled hole, with the hooks opening upwards. A pivot shaft is slidably mounted on a support member in a direction perpendicular to the rib plate, and a return spring is provided between the support member and the pivot shaft; when the return spring is compressed, it tends to force the pivot shaft to move away from the swing end. The rotatable stiffening rib assembly is pre-installed at the bottom of the hollow steel pipe; hooks are arranged on the movement path of the pivot shaft; the top of the support is connected to one end of a steel bar or rope, and the other end of the steel bar or rope extends out from the top opening of the hollow steel pipe; the rotatable stiffening rib assembly is pulled to a set position by the steel bar or rope, and the pivot shaft on the support automatically retracts when it encounters the back of the hook, so that the support slides over the hook and above the hook; the weight of the rod or cement forces the support to move downward, and the pivot shaft slides into the slot of the hook to form a pivot structure.

2. The prefabricated building according to claim 1, characterized in that, The web of the T-beam has reinforcing bar holes; the lapped reinforcing bars are inserted through the reinforcing bar holes.

3. The prefabricated building according to claim 1, characterized in that, Multiple lapped reinforcing bars are arranged at intervals along the web of the T-beam; multiple protruding reinforcing bars are arranged at intervals on each precast floor slab; the multiple lapped reinforcing bars correspond one-to-one with the multiple protruding reinforcing bars on the precast floor slab.

4. The prefabricated building according to claim 1, characterized in that, The two ends of the lapped reinforcing bars are respectively lapped onto the protruding reinforcing bars in the two reserved slots.

5. The prefabricated building according to claim 1, characterized in that, The flanges of the T-beam are in close contact with the bottom surfaces of the two precast floor slabs.

6. The prefabricated building according to claim 1, characterized in that, The reserved groove is located on top of the precast floor slab.

7. The prefabricated building according to claim 1, characterized in that, The reserved slot is rectangular.

8. The prefabricated building according to claim 1, characterized in that, One end of the protruding reinforcing bar is located inside the precast floor slab, and the other end extends out and is located in the reserved groove.

9. The prefabricated building according to claim 1, characterized in that, Both the precast floor slab and the web of the T-beam are provided with wire-passing holes.

10. The prefabricated building according to claim 1, characterized in that, The reinforced steel-concrete composite column includes a steel pipe and concrete poured inside the steel pipe; a reinforcing rod is provided on the steel pipe; the reinforcing rod is used to enhance the connection strength between the steel pipe and the concrete.

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