CN216239259U - Laminated floor slab and connecting node structure thereof - Google Patents

Abstract

The utility model discloses a composite floor slab and a connection node structure thereof, which comprise a UHPC (ultra high performance concrete) bottom plate, a steel bar truss and a filling material layer, wherein the filling material layer is poured on the UHPC bottom plate, the bottom of the steel bar truss is poured in the UHPC bottom plate, the middle of the steel bar truss is poured in the filling material layer, the upper part of the steel bar truss extends to the outside of the filling material layer, a bottom plate steel bar is arranged in the UHPC bottom plate, and the steel bar truss comprises a web member bar fixedly connected with the bottom plate steel bar. The novel floor is simple in structure, the weight and the thickness of the whole floor are reduced, the construction, the transportation and the installation are convenient, the construction is simple, the physical performance of the floor is improved, and materials are saved.

Description

Laminated floor slab and connecting node structure thereof

Technical Field

The utility model relates to the technical field of building materials, in particular to a composite floor slab and a connecting node structure thereof.

Background

In the building process of a house, a mode of a concrete precast slab or a reinforced concrete composite slab combining the precast slab and cast-in-place concrete is usually adopted, so that a mold can be saved, the construction efficiency is improved, and particularly, the reinforced concrete composite slab has the advantages of good integrity, high rigidity, smooth upper and lower surfaces, convenience for decoration of a finish coat and suitability for high-rise buildings and large-bay buildings with higher integral rigidity requirements. However, the existing reinforced concrete composite slab is generally prefabricated by at least 6cm and cast-in-place by 7cm, the thickness reaches 13cm, the weight is large, materials are wasted, and the prefabricated part has large weight and is difficult to transport, hoist and mount; temporary support is needed in the construction stage, the construction is complex, and the field wet operation is more; the rigidity and bearing capacity of the floor slab are low in the construction stage, and the span of the floor slab is generally within 4 m; the ribs are arranged around the laminated slab, the industrial production is difficult, and the requirements on the die and the transportation are high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a composite floor slab and a connecting node structure thereof, which well solve the problems, have simple structure, reduce the weight and the thickness of the whole floor slab, are convenient to construct, transport and install, are simple to construct, improve the physical properties of the floor slab and save materials.

The technical scheme is that the composite floor slab comprises a UHPC bottom plate, a steel bar truss and a filling material layer, wherein the filling material layer is poured on the UHPC bottom plate, the bottom of the steel bar truss is poured in the UHPC bottom plate, the middle of the steel bar truss is poured in the filling material layer, the upper part of the steel bar truss extends to the outside of the filling material layer, a bottom plate steel bar is arranged in the UHPC bottom plate, and the steel bar truss comprises a web member bar fixedly connected with the bottom plate steel bar.

Preferably, the bottom plate reinforcing steel bars comprise transverse reinforcing steel bars and longitudinal reinforcing steel bars which are fixedly arranged, and the bottoms of the web member reinforcing steel bars are fixedly connected to the longitudinal reinforcing steel bars.

Preferably, steel fibers are embedded in the UHPC bottom plate, the bottom plate steel bars comprise longitudinal steel bars, and the bottoms of the web member bars are fixedly connected to the longitudinal steel bars.

Preferably, the filling material layer is foam concrete, and pipelines are buried in the filling material layer.

Preferably, the steel bar truss further comprises an upper chord rib fixedly connected with the top of the web member rib, and the upper chord rib is located outside the filling material layer.

The utility model also provides a connection node structure of the composite floor slab, which comprises at least two composite floor slabs, wherein the joint of the two composite floor slabs is a connection node position, the two composite floor slabs are provided with extended steel bar trusses at the connection node position, the two extended steel bar trusses are fixedly connected, and the connection node positions are fixedly connected through cast-in-place concrete.

Preferably, the bottom of the position of the connecting node is provided with a cross beam, the top of the cross beam is fixedly provided with a stud, the stud is located at the center of the position of the connecting node, the two extending steel bar trusses are fixedly connected through reinforcing ribs, and hook sections are arranged at two ends of each reinforcing rib.

Preferably, two last chord muscle in the steel bar truss of coincide floor sets up perpendicularly, connected node position bottom is provided with the crossbeam, the fixed peg that is provided with in crossbeam top, the peg is located connected node position center department, be provided with reinforcing bar down on the UHPC bottom plate, two reinforcing bar is gone up to steel bar truss top fixedly connected with of coincide floor, it is provided with the crotch section to go up reinforcing bar one end, the last chord muscle and the last reinforcing bar parallel arrangement of crotch section one side, the last chord muscle and the last reinforcing bar perpendicular arrangement of last reinforcing bar of crotch section offside.

Preferably, upper chord reinforcements in the steel bar trusses of the two composite floor slabs are arranged in parallel, the UHPC bottom plate at the position of the connecting node extends out of the filling material layer, a lower reinforcing steel bar is arranged between the UHPC bottom plates extending out of the filling material layer, the tops of the steel bar trusses of the two composite floor slabs are fixedly connected with upper reinforcing steel bars, and the upper reinforcing steel bars are perpendicular to the upper chord reinforcements on the steel bar trusses.

Preferably, the connection node position is provided with a wall post, it is provided with reinforcing steel bar and lower reinforcing steel bar to link up on the wall post, reinforcing steel bar is located two down on the UHPC bottom plate of coincide floor, go up reinforcing steel bar and two last chord muscle fixed connection in the steel bar truss of coincide floor, coincide floor and wall post junction bottom are provided with the support angle bar, the support angle bar passes through expansion bolts and wall post fixed connection.

The utility model has the beneficial effects that:

1. the UHPC bottom plate is used as the bottom die for concrete pouring during construction, so that the UHPC bottom plate has the characteristics of ultrahigh strength of compressive strength of 120MPa-200MPa and ultrahigh theoretical durability of 1000 years, the steel bar truss bears and coordinates the deformation of cast-in-place concrete of the floor slab and a composite floor slab, the filler restrains the buckling of web members of the steel bar truss, and can be used as a sound absorption and heat insulation material of the floor slab, the whole composite floor slab can be prefabricated in a factory, only the top surface and the joints are required to be poured on site, the prefabrication rate is high, the field wet operation is less, the characteristics of an assembly type building can be reflected, the weight and the thickness of the whole floor slab are reduced, the construction, transportation and installation are convenient, the construction is simple, the physical performance of the floor slab is improved, and the material is saved;

2. the connection node of the composite floor slab is simple in structure and convenient to construct, the composite floor slab can be directly erected on a structural beam or the side surface of a wall column during construction, floor slab supports are not needed, construction workload is reduced, construction efficiency is improved, and production cost is saved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model.

FIG. 1 is a schematic view of the internal structure of embodiment 1;

FIG. 2 is a schematic cross-sectional view taken along line 1-1 of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken at 2-2 in FIG. 1;

FIG. 4 is a schematic view of the internal structure of embodiment 2;

FIG. 5 is a schematic cross-sectional view taken at 3-3 of FIG. 4;

FIG. 6 is a schematic cross-sectional view taken at 4-4 in FIG. 4;

FIG. 7 is a schematic view of the internal structure of embodiment 3;

FIG. 8 is a schematic cross-sectional view taken at 5-5 of FIG. 7;

FIG. 9 is a schematic view of the internal structure of embodiment 4;

FIG. 10 is a schematic cross-sectional view taken at 6-6 of FIG. 9;

FIG. 11 is a schematic view of the internal structure of embodiment 5;

FIG. 12 is a schematic cross-sectional view taken at 7-7 of FIG. 11;

FIG. 13 is a schematic view of the internal structure of embodiment 6;

FIG. 14 is a schematic cross-sectional view taken at 8-8 of FIG. 13;

FIG. 15 is a schematic view of the internal structure of embodiment 7;

FIG. 16 is a schematic cross-sectional view taken at 9-9 of FIG. 15;

FIG. 17 is a schematic view of the connection of the wall-column through-floor in the present invention;

description of reference numerals:

1. a UHPC backplane; 2. a layer of filler material; 3. a steel bar truss; 4. web bar ribs; 5. transverse reinforcing steel bars; 6. longitudinal reinforcing steel bars; 7. winding ribs; 8. a cross beam; 9. a stud; 10. lower reinforcing steel bars; 11. upper reinforcing steel bars; 12. a hook section; 13. a wall stud; 14. supporting angle iron; 15. an expansion bolt; 16. and (5) a concrete cast-in-place layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1: as shown in fig. 1-3, the present invention provides a composite floor slab, which includes a UHPC bottom plate 1, a steel bar truss 3 and a filler material layer 2, wherein the filler material layer 2 is poured on the UHPC bottom plate 1, the bottom of the steel bar truss 3 is poured in the UHPC bottom plate 1, the middle of the steel bar truss 3 is poured in the filler material layer 2, the upper part of the steel bar truss 3 extends to the outside of the filler material layer 2, a bottom plate steel bar is arranged in the UHPC bottom plate 1, and the steel bar truss 3 includes a web member bar 4 fixedly connected with the bottom plate steel bar.

The bottom plate reinforcing bar is including fixed horizontal reinforcing bar 5 and the longitudinal reinforcement 6 that sets up, 4 bottom fixed connection of web member muscle are on longitudinal reinforcement 6. The filling material layer 2 is made of foam concrete, and pipelines are buried in the filling material layer 2. The steel bar truss 3 further comprises an upper chord rib 7 fixedly connected with the top of the web member rib 4, and the upper chord rib 7 is located outside the filling material layer 2.

The composite floor slab mainly comprises a UHPC bottom plate 1, a steel bar truss 3 and a filling material layer 2. The bottom plate adopts UHPC as a bottom die for concrete pouring during construction; the steel bar truss 3 adopts a triangular truss and takes charge of coordinating the deformation of the cast-in-place concrete of the floor slab and the composite floor slab; the filling material adopts foam concrete, restrains the buckling of the web bar 4 of the steel bar truss 3, and can be used as a sound absorption and heat insulation material of the floor slab.

The base plate is made of ultra-high performance concrete (UHPC), and the material has the characteristics of ultra-high strength (compressive strength of 120MPa-200 MPa) and ultra-high durability (theoretical durability of 1000 years). The UHPC has ultrahigh durability, compactness, strength and self-healing capability, and can reduce the requirements of the thickness of a protective layer and the anchoring thickness of the steel bar truss 3; the thickness of the steel bar protective layer of the bottom plate can be 5-10mm, the thickness of the common concrete can be 15mm, the thickness of the bottom plate can be 20mm-30mm, and the minimum thickness of the common concrete plate is 50 mm; the steel bar truss 3 is arranged in a triangular mode, and the stability of the upper chord rib 7 of the truss outside the surface is guaranteed; in order to further reduce the weight of the floor slab, high-strength steel bars (HRB 500 and HRB 600) can be used for replacing common steel bars, and the thickness of the concrete cast-in-place layer 16 and the thickness of the bottom plate of the laminated slab are reduced.

The filling material layer 2 is made of foam concrete and plays roles in heat preservation, sound absorption and the like; the inside of the packing material layer 2 may be provided with a pipeline, ensuring that the pipeline is separated from the main structure. The compressive strength of the foam concrete is 1-4MPa, and the foam concrete can be used as a compression area of the laminated slab in the construction hoisting process, so that the unsupported span of the laminated slab is increased, and the size of an upper chord rib 7 of the steel bar truss 3 is reduced; the external restraint of 3 web members of the steel bar truss can be used for preventing the external instability of 4 web members of the web member ribs. The filling material layer 2 is used as an inner template of the concrete cast-in-place layer 16 and is connected with the steel bar truss 3 and the UHPC bottom plate 1 without seams, so that the problem of upward floating of the core mold of the cast-in-place hollow floor slab is solved.

The thickness of the laminated floor slab can be 60-500mm, and the thickness of the concrete cast-in-place layer 16 can be 40-200 mm; the laminated floor slab is in a large-slab form, the length is 2-13m, the width can be 0.5-4m, the number of joints of the floor slab can be controlled, the cracking and leakage risks of the floor slab are reduced, and the construction speed can be accelerated; the top surface, the side surface and the end part of the composite floor slab are connected by cast-in-place reinforced concrete. The laminated slab is produced in a factory, the surface flatness is high, and secondary plastering and other procedures are not needed; the weight of the floor slab is 1/2-2/3 of the weight of a common concrete floor slab, so that the floor slab is light and high in strength, and the structural earthquake resistance and the economical efficiency are greatly facilitated. The joint of the composite floor slab can be provided with pipelines, so that the flexibility of laying pipelines in site construction is ensured. The continuous composite floor slab is connected with the steel beam, a local hole opening mode of the floor slab can be adopted, the steel beam stud 9 is directly inserted into the hole of the composite slab, post-cast concrete is filled, and construction is simple.

The superimposed floor slab is prefabricated in factories, so that the industrial production is facilitated; concrete is only needed to be poured on the top surface and the connecting part on site, the prefabrication rate is high, the field wet operation is less, and the advantages of the fabricated building can be reflected; except the position of the connecting node, no reinforcing steel bar extends out of the periphery, so that the requirement on the template is reduced, and the industrial production is facilitated. A hole can be formed in the middle of the laminated floor slab, so that the wall column 13 can conveniently penetrate out of the middle of the floor slab, and the integrity of the floor slab and the wall column 13 is further enhanced; the laminated slab does not need to be disconnected at the wall columns 13 and the structural beams, so that the arrangement of the special-shaped floor slabs can be reduced, and the universality of the floor slabs is enhanced. The floor construction can be directly erected on the side surfaces of the structural beam and the wall column 13, floor support does not need to be arranged, construction workload is reduced, and economy is achieved. The filling material of the laminated floor slab can be pressed, the span of the construction stage of the floor slab can be enlarged, special reinforcing measures such as temporary support, local reinforcing steel bars and the like in the construction stage are not needed, the economy is obvious, and the construction is convenient; the filling material is light, the weight of the floor slab is not affected by the increase of the height of the floor slab, the height of the floor slab can be increased, and the advantage of the floor slab with the span of more than 4m is more obvious.

Example 2, the following: as shown in fig. 4-6, on the basis of the first embodiment, in order to reduce the thickness of the UHPC base plate 1, steel fibers can be arranged in the UHPC base plate 1, and the transverse reinforcing steel bars 5 of the base plate are eliminated, so that the production process is simplified. Namely, steel fibers are embedded in the UHPC bottom plate 1, the bottom plate steel bars comprise longitudinal steel bars 6, and the bottoms of the web bar ribs 4 are fixedly connected to the longitudinal steel bars 6. The transverse steel bars 5 in the bottom plate steel bars are replaced by steel fibers.

The utility model also provides a connection node structure of the composite floor slab.

Example 3: as shown in fig. 7-8, when two composite floor slabs are connected at the slab disconnection position, the connection node structure of the composite floor slab comprises at least two upper composite floor slabs, the butt joint position of the two composite floor slabs is a connection node position, the two composite floor slabs are provided with extended steel bar trusses 3 and extended steel bar trusses 3, the extended steel bar trusses 3 are fixedly connected, and the connection node position is fixedly connected through cast-in-place concrete. The bottom of the connecting node position is provided with a cross beam 8, the top of the cross beam 8 is fixedly provided with a stud 9, the stud 9 is positioned at the center of the connecting node position, the two extending steel bar trusses 3 are fixedly connected through reinforcing ribs, and the two ends of each reinforcing rib are provided with hook sections 12. The reinforcing bars comprise upper reinforcing bars 11 and lower reinforcing bars 10.

Two coincide floor connect 8 departments in the crossbeam promptly, and the connected node position is located crossbeam 8, and when prefabricating this moment, filler material layer 2 can be good at to the UHPC bottom plate 1 of coincide floor, and filler material layer 2 is stretched out to web member muscle 4 and last chord muscle 7 of steel bar truss 3, and fixed connection reinforcing bar 10 down is gone up to steel bar truss 3 on the UHPC bottom plate 1 of connected node position lower part, fixed connection reinforcing bar 11 is gone up to last chord muscle 7, goes up reinforcing bar 11 and lower reinforcing bar 10 crisscross setting, and the both ends of going up reinforcing bar 11 and lower reinforcing bar 10 all are provided with the crotch. After the studs 9, the upper reinforcing steel bars 11 and the lower reinforcing steel bars 10 at the positions of the connecting nodes are fixed, the cast-in-place concrete layer 16 is poured, so that the two laminated floors are fixedly connected.

Example 4: as shown in fig. 9-10, when two composite floors are connected at the continuous position of the floors, the lower parts of the two composite floors are also provided with the supporting beams 8, but the UHPC bottom boards 1 of the two composite floors do not extend, and only the steel bar trusses 3 extending from the two composite floors need to be fixedly connected with each other, and then concrete is cast in situ at the connecting node positions to fixedly connect the two composite floors.

Example 5: as shown in fig. 11 to 12, embodiments 3 and 4 are generally applicable to the case where the arrangement direction of the floor slabs is the same, and when the arrangement direction of the floor slabs is changed, that is, when the upper chords 7 of the steel bar trusses 3 of two laminated floor slabs are vertically arranged, the connection structure of the two laminated floor slabs includes: the bottom of the connecting node position is provided with a cross beam 8, the top of the cross beam 8 is fixedly provided with a stud 9, the stud 9 is located at the center of the connecting node position, a lower reinforcing steel bar 10 is arranged on the UHPC bottom plate 1, the tops of two reinforcing steel bar trusses 3 of the composite floor slab are fixedly connected with upper reinforcing steel bars 11, one end of each upper reinforcing steel bar 11 is provided with a hook section 12, an upper chord rib 7 on one side of each hook section 12 is arranged in parallel with the upper reinforcing steel bar 11, and the upper chord rib 7 on the opposite side of each hook section 12 is arranged perpendicular to the upper reinforcing steel bar 11. Similarly, the upper reinforcing steel bars 11 and the lower reinforcing steel bars 10 are arranged in a staggered mode, and the length of the sections, perpendicular to the upper chord bars 7, of the upper reinforcing steel bars 11 is longer than that of the hook sections 12.

Example 6: as shown in fig. 13-14, when the unidirectional floor slab is connected in the non-main stress direction, that is, the upper chord bars 7 in the two steel bar trusses 3 of the composite floor slab are arranged in parallel, the UHPC bottom plate 1 at the position of the connection node extends out of the filling material layer 2, the lower reinforcing steel bars 10 are arranged between the UHPC bottom plates 1 extending out of the filling material layer 2, the top parts of the two steel bar trusses 3 of the composite floor slab are fixedly connected with the upper reinforcing steel bars 11, and the upper reinforcing steel bars 11 are arranged perpendicular to the upper chord bars 7 on the steel bar trusses 3. The lower parts of the two superposed floors do not need to be supported by the cross beam 8, and the lower reinforcing steel bars 10 and the upper reinforcing steel bars 11 which are arranged in a staggered mode are directly adopted to be connected and fixed. Hooks are arranged at two ends of the lower reinforcing steel bar 10, and the upper reinforcing steel bar 11 is perpendicular to the upper chord bar 7 and is fixedly connected with the upper chord bar 7. And then concrete is poured at the positions of the connecting nodes.

Example 7: as shown in fig. 15-16, when the composite floor slab is connected to the shear wall, a wall column 13 is disposed at the connection node, an upper reinforcing steel bar 11 and a lower reinforcing steel bar 10 are disposed on the wall column 13 in a penetrating manner, the lower reinforcing steel bar 10 is disposed on the UHPC base plates 1 of the two composite floor slabs, the upper reinforcing steel bar 11 is fixedly connected to the upper chord steel bar 7 of the steel bar truss 3 of the two composite floor slabs, a support angle iron 14 is disposed at the bottom of the connection between the composite floor slab and the wall column 13, and the support angle iron 14 is fixedly connected to the wall column 13 through an expansion bolt 15. The two superimposed floors can be oriented in the same or perpendicular direction.

As shown in fig. 17, when the wall columns 13 penetrate through the composite floor slabs for connection, the upper reinforcing ribs and the lower reinforcing ribs are connected and reinforced between the adjacent composite floor slabs, and the cross beams 8 are arranged below the connecting node positions so as to support the composite floor slabs.

Meanwhile, a hole can be formed in the middle of the laminated floor slab, so that the wall column 13 can conveniently penetrate out of the middle of the floor slab, and the integrity of the laminated floor slab and the wall column 13 is further enhanced; the laminated floor slab does not need to be disconnected at the wall columns 13 and the structural beams, so that the arrangement of the opposite-shaped floor slabs can be reduced, and the universality of the floor slab is enhanced. The floor construction can be directly erected on the side surfaces of the structural beam and the wall column 13, floor support does not need to be arranged, construction workload is reduced, and economy is achieved.

The laminated floor slab can be produced in batches in a factory, and has the advantages of simple process, high industrial production degree and high production efficiency; the field wet operation is less, and the environment is protected; the whole composite floor slab is light in weight, is beneficial to resisting earthquake, and saves the main structure and the foundation cost; the floor slab has the advantages of regular size, high transportation efficiency, convenient field hoisting construction and construction period and construction cost saving. The high-strength high-durability material is a development trend in the future building field, a fully prefabricated floor based on UHPC conforms to the trend, and the UHPC is adopted, so that the laminated floor is high in bearing capacity, high in safety redundancy, and more excellent in bearing and anti-seismic capacity, the floor is not easy to collapse integrally, the anti-seismic safety of the building is improved, and the life and property safety of people is protected. The bearing capacity of the laminated floor slab in the construction stage is high, the construction measures and other related expenses are avoided, and the economy is obvious; the floor slab is light in overall weight, and the material consumption of the supporting beam and the vertical member can be saved.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. A composite floor slab, its characterized in that: the steel bar truss structure is characterized by comprising a UHPC bottom plate (1), a steel bar truss (3) and a filling material layer (2), wherein the filling material layer (2) is poured on the UHPC bottom plate (1), the bottom of the steel bar truss (3) is poured in the UHPC bottom plate (1), the middle of the steel bar truss (3) is poured in the filling material layer (2), the upper part of the steel bar truss (3) extends to the outside of the filling material layer (2), a bottom plate steel bar is arranged in the UHPC bottom plate (1), and the steel bar truss (3) comprises a web bar rib (4) fixedly connected with the bottom plate steel bar.

2. The composite floor slab of claim 1, wherein: the bottom plate reinforcing steel bar comprises a transverse reinforcing steel bar (5) and a longitudinal reinforcing steel bar (6) which are fixedly arranged, and the bottom of the web member reinforcing steel bar (4) is fixedly connected to the longitudinal reinforcing steel bar (6).

3. The composite floor slab of claim 1, wherein: steel fibers are buried in the UHPC bottom plate (1), the bottom plate steel bars comprise longitudinal steel bars (6), and the bottoms of the web bar ribs (4) are fixedly connected to the longitudinal steel bars (6).

4. The composite floor slab of claim 1, wherein: the filling material layer (2) is made of foam concrete, and pipelines are buried in the filling material layer (2).

5. The composite floor slab of claim 1, wherein: the steel bar truss (3) further comprises an upper chord rib (7) fixedly connected with the top of the web member rib (4), and the upper chord rib (7) is located outside the filling material layer (2).

6. The utility model provides a connected node structure of coincide floor which characterized in that: the composite floor slab comprises at least two composite floor slabs and a plurality of reinforcing steel bar trusses, wherein the butt joint of the two composite floor slabs is a connecting node position, the two composite floor slabs are provided with the extending reinforcing steel bar trusses (3) at the connecting node position, the extending reinforcing steel bar trusses (3) are fixedly connected with each other, and the connecting node position is fixedly connected through cast-in-place concrete.

7. The connection node structure of laminated floor slabs according to claim 6, wherein: the steel bar truss structure is characterized in that a cross beam (8) is arranged at the bottom of the position of the connecting node, a stud (9) is fixedly arranged at the top of the cross beam (8), the stud (9) is located at the center of the position of the connecting node, the two extending steel bar trusses (3) are fixedly connected through reinforcing ribs, and hook sections (12) are arranged at the two ends of each reinforcing rib.

8. The connection node structure of laminated floor slabs according to claim 6, wherein: two last chord muscle (7) in steel bar truss (3) of coincide floor set up perpendicularly, connected node position bottom is provided with crossbeam (8), crossbeam (8) top is fixed to be provided with peg (9), peg (9) are located connected node position center department, be provided with down reinforcing bar (10) on UHPC bottom plate (1), two reinforcing bar (11) are gone up to steel bar truss (3) top fixedly connected with of coincide floor, it is provided with crotch section (12) to go up reinforcing bar (11) one end, last chord muscle (7) and last reinforcing bar (11) parallel arrangement of crotch section (12) one side, last chord muscle (7) and last reinforcing bar (11) of crotch section (12) opposite side set up perpendicularly.

9. The connection node structure of laminated floor slabs according to claim 6, wherein: two last chord muscle (7) in steel bar truss (3) of coincide floor are parallel to each other and set up, filler material layer (2) are stretched out in UHPC bottom plate (1) of connected node position, are provided with between UHPC bottom plate (1) of stretching out filler material layer (2) down reinforcing bar (10), two reinforcing bar (11) are gone up to steel bar truss (3) top fixedly connected with of coincide floor, last reinforcing bar (11) and last chord muscle (7) on steel bar truss (3) set up perpendicularly.

10. The connection node structure of laminated floor slabs according to claim 6, wherein: the utility model discloses a composite floor slab, including connection node position, wall post (13), it is provided with reinforcing bar (11) and lower reinforcing bar (10) to link up on wall post (13), reinforcing bar (10) are located two on UHPC bottom plate (1) of composite floor slab down, go up reinforcing bar (11) and two last chord muscle (7) fixed connection in steel bar truss (3) of composite floor slab, composite floor slab and wall post (13) junction bottom are provided with support angle bar (14), support angle bar (14) are through expansion bolts (15) and wall post (13) fixed connection.

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