CN216239258U - Assembled reinforced concrete hollow laminated slab floor - Google Patents

Abstract

The utility model belongs to the technical field of building design, and particularly relates to an assembled reinforced concrete hollow laminated slab floor system which comprises a hollow prefabricated slab, a disassembly-free template, a laminated layer, an end support beam and a side support beam, wherein the end support beam and the side support beam are lapped to form an installation frame of the hollow prefabricated slab; the superposed layers are arranged above the disassembly-free template in a laminated mode, and the hollow prefabricated slab is completely covered to form a hollow laminated slab floor; the cast-in-place reinforced concrete hollow floor system is assembled according to the characteristics of the laminated slab, and has the dual advantages of the hollow floor system and the laminated floor system.

Description

Assembled reinforced concrete hollow laminated slab floor

Technical Field

The utility model belongs to the technical field of building design, and particularly relates to an assembled reinforced concrete hollow composite slab floor.

Background

The cast-in-place reinforced concrete hollow floor system is another floor system following a flat slab and a ribbed slab, and is mainly characterized in that a certain number of core moulds are regularly filled in the cast-in-place reinforced concrete floor to form the hollow flat slab without exposed beams, and the hollow flat slab is widely applied to large-span buildings such as office buildings, underground garages, large-scale shopping malls, school teaching buildings, libraries and the like. Compared with the common beam slab floor, the hollow floor has the advantages of a bidirectional grid cast-in-place rib force transmission system, light dead weight, high rigidity, good integrity, flexible arrangement of flat beamless space, convenient construction, high floor height reduction, good heat preservation, heat insulation and sound insulation effects, convenient pipeline arrangement and the like, but also has the defects of large on-site reinforcement binding amount, need of purchasing a special core mold, large core mold volume, difficulty in transportation and installation engineering, need of adopting core mold anti-floating measures, need of supporting a mold at the bottom, unassembled floor and the like.

With the vigorous popularization of the prefabricated building in China, the prefabricated floor system is widely applied. The existing commonly used assembled floor is a steel bar truss laminated slab, and has the advantages of reducing formwork, saving labor, being convenient for construction, little field wet operation and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problems of the existing steel bar truss composite slab, the utility model provides an assembly type reinforced concrete hollow composite slab floor, which realizes the assembly of cast-in-place reinforced concrete hollow floor according to the characteristics of the composite slab and has the dual advantages of the hollow floor and the composite floor.

The technical scheme adopted by the utility model is as follows:

an assembled reinforced concrete hollow laminated slab floor system comprises a hollow prefabricated slab, a disassembly-free template, a laminated layer, an end support beam and a side support beam, wherein the end support beam and the side support beam are lapped to form an installation frame of the hollow prefabricated slab; the superposed layers are arranged above the disassembly-free template in a laminated mode, and the hollow prefabricated slab is completely covered to form the hollow laminated slab floor.

Further defined, the hollow precast slab comprises a bottom slab, a first rib beam and a second rib beam; the second rib beams are overlapped end to form an outer frame of the hollow precast slab, the first rib beams are transversely and longitudinally distributed in a crossed manner to divide the inner side of the outer frame formed by the second rib beams into a plurality of bottom plate mounting areas, and the bottom plates are embedded in the bottom plate mounting areas; the first rib beam and the second rib beam are upwards protruded to form a hollow cavity compared with the bottom plate, and the non-dismantling formwork covers the hollow cavity.

Further defined, the hollow precast slab comprises a bottom slab, a first rib beam and a second rib beam; the first rib beam is transversely arranged on the base plate at intervals, the second rib beam is longitudinally arranged on the base plate at intervals, the first rib beam and the second rib beam protrude upwards to form a hollow cavity, and the disassembly-free template covers the hollow cavity.

Further, the top of the first rib beam and/or the second rib beam is provided with a key groove, and concrete is filled in the key groove to be combined with the laminated layer into a whole.

Further limiting, a U-shaped framework consisting of a bottom rib and a U-shaped rib or a triangular steel bar truss is arranged in the first rib beam; the top end of the U-shaped framework or the triangular steel bar truss extends into the laminated layer.

Further limiting, the triangular steel bar truss comprises an upper chord rib, a lower chord rib and a web member rib, wherein the lower chord rib is laid on two sides of the bottom of the triangular steel bar truss along the length direction of the first rib beam, the upper chord rib is laid above the lower chord rib along the length direction of the first rib beam, the two lower chord ribs are respectively positioned at three top points of the isosceles triangle, the web member rib is in an inverted V shape and spans over two ends of the upper chord rib and respectively extends to the lower chord rib; the upper chord ribs extend into the laminated layer.

Further limiting, an S-shaped framework or a plane steel bar truss is arranged in the second rib beam; the top end of the S-shaped framework or the plane steel bar truss extends into the laminated layer.

Further limiting, the plane steel bar truss comprises an upper chord flat rib, a lower chord flat rib and a web member inclined rib; the lower chord flat rib is laid at the bottom center of the plane steel bar truss along the length direction of the second rib beam, the upper chord flat rib is laid above the lower chord flat rib along the length direction of the second rib beam and extends into the laminated layer, the web member diagonal ribs are obliquely connected between the upper chord flat rib and the lower chord flat rib, the inclination angles of two adjacent web member diagonal ribs are opposite, and an included angle of 30-60 degrees is formed between every two adjacent web member diagonal ribs.

Further limiting, arranging a post-cast strip at the joint of the hollow precast slab, and arranging additional steel bars in the post-cast strip; grooves are formed in the second rib beams on two adjacent sides of the post-cast strip, the shear keys are formed after non-shrinkage fine aggregate concrete is poured, and the bottom longitudinal ribs of the transverse first rib beam and the bottom longitudinal ribs of the second rib beam are directly connected or indirectly connected through connecting plates in the post-cast strip.

Compared with the prior art, the utility model has the beneficial effects that:

1) the utility model realizes the assembled structural design of the reinforced concrete hollow floor, has the advantages of both the laminated slab and the hollow floor, and has the advantages of less on-site wet operation of the laminated slab, template and labor saving, high industrialization degree, guaranteed component quality, high construction speed and the like; on the other hand, the hollow floor slab has the advantages of light dead weight, high rigidity, good integrity, flexible arrangement of flat beamless space, convenient construction, high floor height saving, good heat preservation, heat insulation and sound insulation effects, convenient pipeline arrangement and the like.

2) The disassembly-free template is adopted to replace a core mold of the hollow floor, the disassembly-free template is small in size and convenient to transport, any filling is not filled in the hollow cavity, the pipeline installation cannot be influenced, and the problem of core mold anti-floating is not required to be considered; the rib beam and the bottom plate steel bars are bound in a factory, the dismantling-free template can be used as a concrete protective layer, the steel bars in the superposed layer can be directly laid on the dismantling-free template, the binding amount of the steel bars on site is greatly reduced, and the construction is simple.

3) The utility model solves the problems of insufficient rigidity, heavy self weight and the like of the large-span steel bar truss composite slab, does not need to arrange a secondary beam for a plate with a large column span, does not need to additionally arrange a temporary support during construction, can meet the requirements of the prefabricated part on bearing capacity and deformation during the construction stage and the use stage of the composite slab, and is convenient and fast to construct.

4) The U-shaped framework 31 or the triangular steel bar truss 32 is arranged in the first rib beam 3, the S-shaped framework 41 or the planar steel bar truss 42 is arranged in the second rib beam 4, the advantages of the U-shaped framework 31, the triangular steel bar truss 32, the S-shaped framework 41 and the planar steel bar truss 42 can be fully exerted, the bearing capacity and the deformation resistance of the structure are improved while steel bar binding is effectively reduced, and the arrangement of the second rib beam 4 can increase the integrity of the hollow precast slab on one hand and coordinate the local deformation of the hollow precast slab in the transportation and hoisting processes, and on the other hand, the hollow precast slab can be used as a lateral template when a concrete laminated layer 6 is cast on a hollow precast slab support beam later, so that the construction difficulty is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a plan layout view of a two-way hollow composite slab floor.

Fig. 2 is a structural view of a bidirectional hollow laminated slab floor (wherein fig. 2A is a front structural view of a bidirectional hollow laminated slab, fig. 2B is a sectional view taken in the direction H-H of fig. 2A, and fig. 2C is a sectional view taken in the direction I-I of fig. 2A).

Fig. 3 is an installation cross-sectional view of the first rib 3 and the second rib 4 of fig. 2 (in which fig. 3A is a schematic view of a structure in which a triangular steel truss 32 is provided in the first rib 3, and fig. 3B is a schematic view of a structure in which a U-shaped frame 31 is provided in the first rib 3).

Fig. 4 is a reinforcement diagram corresponding to fig. 3 (wherein fig. 4A is a schematic diagram of a triangular steel truss 32 disposed in the first rib beam 3 and a planar steel truss 42 disposed in the second rib beam 4, and fig. 4B is a schematic diagram of a U-shaped framework 31 disposed in the first rib beam 3 and an S-shaped framework 41 disposed in the second rib beam 4).

Fig. 5 is a schematic structural view of the triangular steel bar truss 32 (in the drawing, 5A is a longitudinal sectional view; 5B is a side view, and 5C is a bottom view).

Fig. 6 is a schematic structural view of the planar steel truss 42.

Fig. 7 is a detailed view of a abutted seam structure of a bidirectional hollow laminated slab floor (in the figure, 7A is a structural view when bottom longitudinal ribs of the first transverse rib 3 and the second transverse rib 4 in the post-cast strip 9 are welded by a connecting plate 92, and fig. 7B is a structural view when the bottom longitudinal ribs of the first transverse rib 3 and the second transverse rib 4 in the post-cast strip 9 are welded or mechanically connected).

Fig. 8 is a detailed view of the structure of the end support beam 7 and the side support beam 8 of the two-way hollow composite slab floor (wherein fig. 8A is a detailed view of the convex support beam structure, and fig. 8B is a detailed view of the rectangular support beam structure).

Figure 9 is a plan view of a one-way hollow composite slab floor.

Fig. 10 is a structural view of a one-way hollow laminated slab floor (in which fig. 10A is a front structural view of a two-way hollow laminated slab, fig. 10B is a cross-sectional view taken along the direction M-M of fig. 10A, and fig. 10C is a cross-sectional view taken along the direction N-N of fig. 10A).

FIG. 11 is a detail view of the splice structure of a unidirectional hollow laminated slab floor.

The prefabricated slab comprises 1-a hollow prefabricated slab, 2-a bottom plate, 21-a bottom plate steel bar mesh, 3-a first rib beam, 31-a U-shaped framework, 311-a bottom rib, 312-a U-shaped rib, 32-a triangular steel bar truss, 321-an upper chord rib, 322-a lower chord rib, 323-a web bar rib, 4-a second rib beam, 41-an S-shaped framework, 411-an S-shaped rib, 42-a plane steel bar truss, 421-an upper chord flat rib, 422-a lower chord flat rib, 423-a web member diagonal rib, 5-a disassembly-free template, 6-a laminated layer, 61-a laminated steel bar mesh, 7-an end support beam, 8-a side support beam, 9-a post-cast strip, 91-a shear key and 92-a connecting plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the application, i.e., the embodiments described are only a subset of, and not all embodiments of the application. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device comprising a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device.

The features and properties of the present application are described in further detail below with reference to examples.

Example 1

Referring to fig. 1 and 2, the embodiment provides an assembled reinforced concrete hollow composite slab floor, which includes a hollow precast slab 1, a detachment-free formwork 5, a laminated layer 6, end support beams 7 and side support beams 8, wherein the side support beams 8 are arranged along the length direction of the floor and distributed at two sides of the floor, the end support beams 7 are arranged along the width direction of the floor, the end support beams 7, the side support beams 8 and frame columns are spliced to form an installation frame of the hollow precast slab 1, a plurality of hollow precast slabs 1 are arranged in parallel, two ends of each hollow precast slab 1 are placed on every two end support beams 7, the detachment-free formwork 5 covers the top of a hollow cavity of the hollow precast slab 1, the detachment-free formwork 5 adopts a fiber cement pressure plate, and the supporting length of the detachment-free formwork 5 on a rib beam is 5-10 mm. The folding layer 6 is arranged above the non-dismantling template 5 in a stacking mode, the hollow precast slab 1 is completely covered, and the bidirectional hollow laminated slab floor is formed, namely the non-dismantling template 5 is used as a template when the folding layer 6 is cast in place and covers the cavity of the hollow precast slab 1, the dismounting process is omitted, the non-dismantling template can be used as a concrete protective layer of reinforcing steel bars in the folding layer, the reinforcing steel bars can be directly laid on the non-dismantling template, and the construction is simple and easy.

Referring to fig. 3 to 6, the hollow precast slab 1 is a bidirectional hollow precast slab 1, and specifically includes a bottom plate 2, a first rib 3 and a second rib 4; the thickness of the bottom plate 2 is preferably 40 mm-60 mm, a bottom plate reinforcing mesh 21 is arranged in the bottom plate 2, a plurality of second rib beams 4 are lapped end to form an outer frame of the hollow precast slab 1, the inner side of the outer frame formed by the second rib beams 4 is divided into a plurality of bottom plate mounting areas by the transverse and longitudinal crossed distribution of the first rib beams 3, and the bottom plate 2 is embedded in the bottom plate mounting areas; the first rib beam 3 and the second rib beam 4 are protruded upwards than the bottom plate 2 to form a hollow cavity, and the non-dismantling formwork 5 covers the hollow cavity, so that the tops of the first rib beam 3 and the second rib beam 4 are connected with the laminated layer 6 into a whole.

Further, the width of the first rib 3 is not smaller than 90mm, the center distance is preferably 500mm to 900mm, a U-shaped framework 31 is disposed in the first rib 3, as shown in fig. 3B and 4B, the U-shaped framework 31 is composed of bottom ribs 311 and U-shaped ribs 312, the bottom ribs 311 are laid on two sides of the bottom of the U-shaped framework 31 along the length direction of the first rib 3, the bottom of the U-shaped ribs 312 surrounds the outer sides of the two bottom ribs 311, two ends of the U-shaped ribs 312 penetrate through the bottom plate 2 and extend into the laminated layer 6, and the first rib 3 and the laminated layer 6 are connected into a whole.

In order to effectively reduce the binding amount of the steel bars and improve the bearing and deformation resistance of the structure, the U-shaped framework 31 can be replaced by a triangular steel bar truss 32. Referring to fig. 3A, 4A and 5, when the triangular steel bar truss 32 is disposed in the first rib 3, the triangular steel bar truss 32 is formed by welding and binding an upper chord bar 321, a lower chord bar 322 and a web bar 323 by a special machine, the lower chord bar 322 is laid on two sides of the bottom of the triangular steel bar truss 32 along the length direction of the first rib 3, the upper chord bar 321 is laid above the lower chord bar 322 along the length direction of the first rib 3, the two lower chord bars 322 are respectively located at three vertexes of an isosceles triangle, the web bar 323 is in an inverted V-shaped structure, the upper chord bar 321 extends across two ends to the lower chord bar 322, the upper chord bar 321 extends into the laminated layer 6, and the first rib 3, the bottom plate 2 and the laminated layer 6 are connected into a whole by the triangular steel bar truss 32.

Further, the second rib 4 is preferably formed to have a width of not less than 60mm and a height equal to that of the first rib 3, and is disposed at the outer periphery of the hollow prefabricated panel 1. In order to effectively reduce the binding amount of the steel bars, an S-shaped framework 41 or a plane steel bar truss 42 can be arranged in the second rib beam 4, the second rib beam 4 can increase the integrity of the hollow precast slab 1, coordinate the local deformation of the hollow precast slab during the transportation and hoisting processes, and can be used as a lateral template when a concrete laminated layer 6 is cast on a support beam of the hollow precast slab 1.

Referring to fig. 4B, when the S-shaped frame 41 is disposed in the second rib beam 4, the S-shaped frame 41 is composed of a bottom rib 311 and an S-shaped rib 411, the bottom rib 311 is laid at the middle position of the bottom of the S-shaped frame 41 along the length direction of the second rib beam 4, the bottom bent end of the S-shaped rib 411 bypasses the bottom rib 311 and is hooked with the bottom rib 311, and the other end of the S-shaped rib 411 passes through the bottom plate 2 and extends into the overlapping layer 6 above the bottom plate 2, so as to connect the second rib beam 4 and the overlapping layer 6 into a whole.

Referring to fig. 4A and 6, when the planar steel bar truss 42 is disposed in the second rib beam 4, the planar steel bar truss 42 is formed by welding the upper chord flat bar 421, the lower chord flat bar 422 and the web member diagonal bar 423 by a special machine. The lower chord flat rib 422 is laid at the bottom center of the planar steel bar truss 42 along the length direction of the second rib beam 4, the upper chord flat rib 421 is laid above the lower chord flat rib 422 along the length direction of the second rib beam 4 and extends into the laminated layer 6, the web member diagonal ribs 423 are obliquely connected between the upper chord flat rib 421 and the lower chord flat rib 422, the inclination angles of two adjacent web member diagonal ribs 423 are opposite, and an included angle of 30-60 degrees is formed between every two web member diagonal ribs.

To further explain, in order to ensure the coupling effect of the first rib beam 3 and the second rib beam 4 with the laminated layer 6 and the bearing capacity of the first rib beam 3 and the second rib beam 4 in use, key grooves are arranged on the tops of the first rib beam 3 and the second rib beam 4, and the joint stress effect of the precast rib beam and the concrete of the post-cast laminated layer 6 can be realized through the key grooves. It is also possible to provide a key groove separately on the top of the first rib 3 or the second rib 4 so as to integrate the first rib 3 or the second rib 4 with the lamination layer 6 by the key groove.

Further, the thickness of the laminated layer 6 is not preferably less than 50mm, and the laminated steel bar mesh 61 is disposed in the laminated layer 6, and the laminated steel bar mesh 61 can be directly laid on the non-dismantling formwork.

It should be noted that the integral joint of the hollow precast slab 1 side of the present application is preferably disposed in the minor stress direction of the composite slab and is preferably arranged to avoid the maximum bending moment section, as shown in fig. 7A and 7B, a post-cast strip 9 is disposed at the joint, and an additional steel bar is disposed in the post-cast strip 9, and the structure of the additional steel bar may be similar to the structure of the triangular steel bar truss 32 or the planar steel bar truss 42 disposed in the second rib 4 or the first rib 3, or may be other steel bar reinforced structures.

Further, in order to strengthen the connection of the post-cast strip 9, grooves are preferably arranged on the second rib beams 4 on two sides of the post-cast strip 9, and the shear keys 91 are formed after the non-shrinkage fine-stone concrete with the first grade higher than the laminated layer 6 is poured. The bottom ribs of the plate ribs on the two sides of the post-cast strip 9 can be welded or mechanically connected in the post-cast strip 9, and can also be indirectly connected through the connecting plates 92, namely the connecting plates 92 are respectively arranged at the end parts of the bottom ribs of the plate ribs on the two sides of the post-cast strip 9, namely the connecting plates 92 are arranged at the end parts of the bottom ribs of the plate ribs on the two sides of the post-cast strip 9 below the shear keys 91. The bottom ribs of the plate ribs on both sides of the post-cast strip 9 are directly welded to the connecting plate 92 during factory processing, and then the connecting plate 92 is welded together on site.

Referring to fig. 8, the hollow prefabricated panels 1 and the end bracket beams 7 and the hollow prefabricated panels 1 and the side bracket beams 8 of the present application may be connected in such a manner as to directly rest on the end bracket beams 7 or the side bracket beams 8. Specifically, as shown in fig. 8A and 8B, the bottom ribs 311 at the two ends of the first rib beam 3, the bottom ribs 322 at the two ends of the triangular steel bar truss 32, the bottom ribs 311 at the two ends of the second rib beam 4, and the bottom ribs 422 of the planar steel bar truss 42 should extend out to a certain length, and be anchored into the end support beam 7 or the side support beam 8, and then concrete is poured to cast the laminated layer 6, the hollow precast slabs 1 and the top of the end support beam 7 into an integrated structure, in this connection manner, the resting length of the first rib beam 3 on the end support beam 7 should not be less than 20mm, or a connection key can be arranged at the top end of the end support beam 7 while the end support beam is resting directly and extends into a gap between the hollow precast slabs 1 and the hollow precast slabs 1, and then concrete is poured to cast the laminated layer 6, the hollow precast slabs 1 and the top shear keys of the end support beam 7 into an integrated structure.

Example 2

The difference from embodiment 1 is that, in this embodiment, referring to fig. 9 and 10, the fabricated reinforced concrete hollow composite slab floor system provided in this embodiment also includes a hollow precast slab 1, a non-dismantling formwork 5, a composite layer 6, an end support beam 7 and a side support beam 8, however, the side support beam 8 in this embodiment is disposed along the length direction of the floor system and distributed at two sides of the floor system, the end support beam 7 is disposed along the width direction of the floor system and lapped with the side support beam 8 to form an installation frame of the hollow precast slab 1, a plurality of hollow precast slabs 1 are disposed in parallel on two end support beams 7, the non-dismantling formwork 5 covers the top of the hollow cavity of the hollow precast slab 1, the non-dismantling formwork 5 adopts a glass fiber reinforced concrete slab (GRC) slab, and the support length of the non-dismantling formwork 5 on the rib beam is 5-10 mm. The folding layer 6 is arranged above the non-dismantling template 5 in a stacking mode, the hollow precast slab 1 is completely covered, and the unidirectional hollow laminated slab floor is formed, namely the non-dismantling template 5 is used as a template when the folding layer 6 is cast in place and covers the cavity of the hollow precast slab 1, the dismounting process is omitted, the non-dismantling template can be used as a concrete protective layer of steel bars in the folding layer, the steel bars can be directly laid on the non-dismantling template, and the construction is simple and easy.

The hollow precast slab 1 of the embodiment is a unidirectional hollow precast slab, which comprises a bottom plate 2, a first rib beam 3 and a second rib beam 4; referring to fig. 10A, 10B and 10C, wherein the thickness of the base plate 2 is preferably 40 mm-60 mm, a single-layer base plate reinforcing mesh 21 is arranged in the base plate 2, the first rib beams 3 are transversely arranged on the base plate 2 at intervals, the second rib beams 4 are longitudinally arranged on the base plate 2 at intervals, and are positioned at both ends and in the span of the hollow precast slab, namely, the first rib beams 3 and the second rib beams 4 are protruded upwards than the base plate 2, a plurality of hollow cavities are formed above the base plate 2, and the non-dismantling formwork 5 covers the hollow cavities, so that the tops of the first rib beams 3 and the second rib beams 4 are integrally connected with the laminated layer 6.

The connection between the unidirectional hollow precast slabs 1 and the end bearer beams 7 and the connection between the hollow precast slabs 1 and the side bearer beams 8 may be directly laid on the end bearer beams 7 or the side bearer beams 8. Specifically, as shown in fig. 8, the bottom ribs 311 at both ends of the first rib beam 3 and the lower chord 322 of the triangular steel bar truss 32 should extend out to a certain length, and be anchored into the end support beam 7, and then concrete is poured to cast the laminated layer 6, the hollow precast slab 1 and the top of the end support beam 7 into an integral structure, and the resting length of the first rib beam 3 on the end support beam 7 in this connection manner should not be less than 20 mm. The shear keys arranged at the top ends of the end support beams 7 can be extended into the gaps between the hollow precast slabs 1 and the hollow precast slabs 1 while the end support beams are directly placed, and then concrete is poured to pour the superposed layers 6, the hollow precast slabs 1 and the shear keys at the tops of the end support beams 7 into an integral structure.

It should be noted that, the hollow prefabricated panels 1 should be compacted at the joint of two, as shown in fig. 11, additional ribs are provided at the joint of the overlapped layers 6 to enhance the connection strength at the joint. The concrete construction and the connection manner of the hollow prefabricated panel 1 are the same as those of example 1.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (9)

1. The assembled reinforced concrete hollow laminated slab floor system is characterized by comprising a hollow prefabricated slab (1), a disassembly-free template (5), a laminated layer (6), an end support beam (7) and a side support beam (8), wherein the end support beam (7) and the side support beam (8) are lapped to form an installation frame of the hollow prefabricated slab (1), two ends of the hollow prefabricated slab (1) are placed on the end support beam (7), and the disassembly-free template (5) covers the top of a hollow cavity of the hollow prefabricated slab (1); the superposed layers (6) are arranged above the disassembly-free templates (5) in a laminated mode, the hollow prefabricated slabs (1) are completely covered, and the hollow laminated slab floor is formed.

2. The assembled reinforced concrete hollow composite floor according to claim 1, wherein the hollow prefabricated panel (1) comprises a base plate (2), a first rib (3) and a second rib (4); the second rib beams (4) are overlapped end to form an outer frame of the hollow precast slab (1), the first rib beams (3) are transversely and longitudinally distributed in a crossed manner to divide the inner side of the outer frame formed by the second rib beams (4) into a plurality of bottom plate mounting areas, and the bottom plate (2) is embedded in the bottom plate mounting areas; the first rib beam (3) and the second rib beam (4) are upwards protruded to form a hollow cavity compared with the bottom plate (2), and the disassembly-free template (5) covers the hollow cavity.

3. The assembled reinforced concrete hollow composite floor according to claim 1, wherein the hollow prefabricated panel (1) comprises a base plate (2), a first rib (3) and a second rib (4); first rib (3) horizontal interval sets up on bottom plate (2), second rib (4) vertical interval sets up on bottom plate (2), and first rib (3) and second rib (4) upwards protruding formation hollow chamber, exempt from to tear open template (5) cover in hollow chamber top.

4. An assembled reinforced concrete hollow composite slab floor system according to claim 2 or 3, wherein the tops of the first rib beam (3) and/or the second rib beam (4) are provided with key grooves, and concrete is filled in the key grooves to be integrated with the composite layer (6).

5. The assembled reinforced concrete hollow composite slab floor system according to claim 4, wherein a U-shaped framework (31) consisting of bottom ribs (311) and U-shaped ribs (312) or a triangular steel bar truss (32) is arranged in the first rib beam (3); the top end of the U-shaped framework (31) or the triangular steel bar truss (32) extends into the superposed layer (6).

6. The assembled reinforced concrete hollow laminated slab floor system according to claim 5, wherein the triangular steel bar truss (32) comprises an upper chord (321), a lower chord (322) and a web bar (323), the lower chord (322) is laid on two sides of the bottom of the triangular steel bar truss (32) along the length direction of the first rib beam (3), the upper chord (321) is laid above the lower chord (322) along the length direction of the first rib beam (3) and the two lower chords (322) are respectively located at three vertexes of an isosceles triangle, and the web bar (323) is in an inverted V shape and spans the two ends of the upper chord (321) to extend to the lower chord (322); the upper chord rib (321) extends into the laminated layer (6).

7. The assembled reinforced concrete hollow composite slab floor system according to claim 6, wherein an S-shaped framework (41) or a planar steel bar truss (42) is arranged in the second rib beam (4); the top end of the S-shaped framework (41) or the plane steel bar truss (42) extends into the laminated layer (6).

8. The assembled reinforced concrete hollow composite slab floor system according to claim 7, wherein the planar steel bar truss (42) comprises an upper chord flat bar (421), a lower chord flat bar (422) and a web member diagonal bar (423); the lower chord flat rib (422) is laid at the bottom center of the plane steel bar truss (42) along the length direction of the second rib beam (4), the upper chord flat rib (421) is laid above the lower chord flat rib (422) along the length direction of the second rib beam (4) and extends into the laminated layer (6), the web member diagonal rib (423) is obliquely connected between the upper chord flat rib (421) and the lower chord flat rib (422), the inclination angles of the two adjacent web member diagonal ribs (423) are opposite, and an included angle of 30-60 degrees is formed between every two web member diagonal ribs.

9. The assembly-type reinforced concrete hollow laminated slab floor system according to claim 2, wherein a post-cast strip (9) is arranged at the joint of the hollow prefabricated slab (1), and additional reinforcing steel bars are arranged in the post-cast strip (9); grooves are formed in the second rib beams (4) on two adjacent sides of the post-cast strip (9), the shear keys (91) are formed after non-shrinkage fine aggregate concrete is poured, and the bottom longitudinal ribs of the transverse first rib beam (3) and the second rib beam (4) are directly connected in the post-cast strip (9) or indirectly connected through a connecting plate (92).

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