Prefabricated autoclaved aerated concrete composite floor slab and manufacturing method thereof

Abstract

The present disclosure provides a prefabricated autoclaved aerated concrete laminated slab composite floor, comprising: a plurality of prefabricated autoclaved aerated concrete laminated slabs and a post-cast reinforced concrete slab belt; wherein the prefabricated autoclaved aerated concrete laminated slab is composed of an autoclaved aerated concrete slab and a cast-in-place reinforced concrete layer; the cast-in-place reinforced concrete layer is located below the autoclaved aerated concrete slab and has a width greater than that of the autoclaved aerated concrete slab and is internally provided with a plurality of distribution steel bars; the two ends of the distribution steel bars extend from the upper surface of the cast-in-place reinforced concrete layer and are separately arranged on the two sides of the autoclaved aerated concrete slab to form a "U" shape; the post-cast reinforced concrete slab belt comprises a slab belt steel bar and a post-cast connecting concrete belt, connects adjacent prefabricated autoclaved aerated concrete laminated slabs, connects the prefabricated autoclaved aerated concrete laminated slab with a floor beam, and forms a composite floor.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of building engineering, and relates to a prefabricated composite floor slab, in particular to a prefabricated autoclaved aerated concrete composite floor slab. BACKGROUND

[0002] In the current fabricated building, a truss reinforced concrete composite floor slab is usually used. The truss reinforced concrete composite floor slab is generally formed by pouring a 60mm-80mm concrete cast-in-place layer on a prefabricated truss reinforced concrete slab with a thickness of 60mm. The composite floor slab has the following disadvantages: first, the floor slab has a thickness of at least 120mm and is heavy, which is not conducive to earthquake resistance; second, the 60mm prefabricated truss reinforced concrete slab has weak bending resistance, and more vertical supports are needed during construction and the prefabricated bottom plate is prone to cracks; and third, the floor slab has poor sound insulation and heat insulation performance.

[0003] The autoclaved aerated concrete composite floor slab is a kind of porous concrete product, which has the advantages of light weight, convenient processing and installation, and good sound insulation and heat insulation performance. The prefabricated autoclaved aerated concrete composite floor slab can be applied to the construction of a floor slab to reduce the weight of the floor slab and improve the sound insulation and heat insulation performance of the floor slab. However, the autoclaved aerated concrete product has low splitting tensile strength, and it is not suitable to be used alone as a floor slab component to bear the vertical action. How to solve the problems of the current truss reinforced concrete composite floor slab and the autoclaved aerated concrete slab is a research focus in the field of building engineering at present. SUMMARY

[0004] In view of the above problems, the present disclosure provides a prefabricated autoclaved aerated concrete composite floor slab to solve the problems of the current truss reinforced concrete composite floor slab and the autoclaved aerated concrete slab.

[0005] The first aspect of the present disclosure provides a precast autoclaved aerated concrete composite slab combination floor, comprising: a plurality of precast autoclaved aerated concrete composite slabs, which are tightly connected to each other in the width direction; and a post-cast reinforced concrete slab belt, which connects the plurality of precast autoclaved aerated concrete composite slabs and connects the plurality of precast autoclaved aerated concrete composite slabs with a floor beam; wherein the precast autoclaved aerated concrete composite slab is composed of an autoclaved aerated concrete slab and a cast-in-place reinforced concrete layer; the cast-in-place reinforced concrete layer is located below the autoclaved aerated concrete slab, and the width of the cast-in-place reinforced concrete layer is greater than that of the autoclaved aerated concrete slab; a plurality of distribution steel bars parallel to the width direction of the cast-in-place reinforced concrete layer are arranged in the cast-in-place reinforced concrete layer; both ends of the distribution steel bars protrude from the upper surface of the cast-in-place reinforced concrete layer and are arranged on both sides of the autoclaved aerated concrete slab to form a "U" shape; the post-cast reinforced concrete slab belt comprises a slab belt steel bar and a post-cast connecting concrete belt; the slab belt steel bar is arranged between the distribution steel bars protruding from the adjacent precast autoclaved aerated concrete composite slabs; and the post-cast connecting concrete belt is cast in the groove between the autoclaved aerated concrete slabs of the adjacent precast autoclaved aerated concrete composite slabs and in the groove between the autoclaved aerated concrete slab of the precast autoclaved aerated concrete composite slab and the floor beam.

[0006] Optionally, the joint surface of the autoclaved aerated concrete slab and the cast-in-place reinforced concrete layer is provided with an anti-slippage groove or pit.

[0007] Optionally, the area of the anti-slippage groove or pit satisfies the following formula:

[0008] A 111 : A 112 = 1.1f t砼 : f t加 ;

[0009] wherein A 111 represents the total area of the slab bottom of the autoclaved aerated concrete slab, A 112 represents the total area of the anti-slippage groove or pit, f t砼 represents the design value of the tensile strength of the concrete of the cast-in-place reinforced concrete layer, and f t加 represents the design value of the splitting tensile strength of the autoclaved aerated concrete slab.

[0010] Optionally, the cross section of the autoclaved aerated concrete slab is a regular trapezoid.

[0011] Optionally, the length of the cast-in-place reinforced concrete layer is greater than that of the autoclaved aerated concrete slab; and both ends of the cast-in-place reinforced concrete layer are arranged on the floor beam, so that a groove is formed between the autoclaved aerated concrete slab and the floor beam.

[0012] Optionally, the cast-in-place reinforced concrete layer is provided with truss reinforcement at both ends, the lower chord of the truss reinforcement is located in the cast-in-place reinforced concrete layer, and the upper chord of the truss reinforcement protrudes from the surface of the cast-in-place reinforced concrete layer and is lower than the surface of the autoclaved aerated concrete slab.

[0013] Optionally, the slab strip reinforcement is arranged between the truss reinforcement and the floor beam.

[0014] Optionally, a plurality of stress reinforcement bars are arranged in the cast-in-place reinforced concrete layer along the length direction, the stress reinforcement bars extend from both ends of the cast-in-place reinforced concrete layer and are anchored into the floor beam.

[0015] Optionally, the slab strip reinforcement includes longitudinal reinforcement and stirrup reinforcement.

[0016] A second aspect of the present disclosure provides a manufacturing method of a prefabricated autoclaved aerated concrete composite floor slab, applied to the prefabricated autoclaved aerated concrete composite floor slab according to any one of the first aspect, and comprising the following steps: mutually tightly splicing a plurality of prefabricated autoclaved aerated concrete composite slabs in the width direction, and arranging the prefabricated autoclaved aerated concrete composite slabs on the floor beam; arranging slab strip reinforcement between the distribution reinforcement bars protruding from the adjacent prefabricated autoclaved aerated concrete composite slabs, and arranging slab strip reinforcement between the ends of each prefabricated autoclaved aerated concrete composite slab and the floor beam; pouring post-poured connecting concrete strips in the grooves between the adjacent prefabricated autoclaved aerated concrete composite slabs and the grooves between each prefabricated autoclaved aerated concrete composite slab and the floor beam, to form a prefabricated autoclaved aerated concrete composite floor slab.

[0017] The above-mentioned at least one technical solution adopted in the embodiments of the present disclosure can achieve the following beneficial effects:

[0018] The prefabricated autoclaved aerated concrete composite floor slab provided by the embodiments of the present disclosure has the advantages of light weight, good heat and sound insulation performance, convenient installation, low carbon and energy saving, good integrity and high bearing capacity of the floor, and can well replace the truss reinforced concrete composite slab floor, and has a positive effect on the promotion of prefabricated buildings and the improvement of the industrialization level of buildings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more completely understand the present disclosure and its advantages, reference will now be made to the following description taken together with the accompanying drawings, in which:

[0020] Figure 1 Fig. 1 schematically shows a top view of a prefabricated autoclaved aerated concrete composite floor slab provided by an embodiment of the present disclosure;

[0021] Figure 2 Fig. 2 schematically shows a top view of a prefabricated autoclaved aerated concrete composite slab provided by an embodiment of the present disclosure.

[0022] Figure 3 A longitudinal sectional view of a prefabricated autoclaved aerated concrete composite slab is schematically shown according to an embodiment of the present disclosure;

[0023] Figure 4 A transverse sectional view of a prefabricated autoclaved aerated concrete composite slab is schematically shown according to an embodiment of the present disclosure;

[0024] Figure 5 A perspective view of an autoclaved aerated concrete slab with anti-sliding grooves on the bottom surface is schematically shown according to an embodiment of the present disclosure;

[0025] Figure 6 A perspective view of an autoclaved aerated concrete slab with anti-sliding pits on the bottom surface is schematically shown according to an embodiment of the present disclosure;

[0026] Figure 7A A slab side sectional view of a prefabricated autoclaved aerated concrete composite slab combined floor without pouring post-cast reinforced concrete slab belt is schematically shown according to an embodiment of the present disclosure;

[0027] Figure 7B A slab side sectional view of a prefabricated autoclaved aerated concrete composite slab combined floor is schematically shown according to an embodiment of the present disclosure;

[0028] Figure 8A A slab end sectional view of a prefabricated autoclaved aerated concrete composite slab combined floor without pouring post-cast reinforced concrete slab belt is schematically shown according to an embodiment of the present disclosure;

[0029] Figure 8B A slab end sectional view of a prefabricated autoclaved aerated concrete composite slab combined floor is schematically shown according to an embodiment of the present disclosure.

[0030] Reference signs:

[0031] 1 - prefabricated autoclaved aerated concrete composite slab;

[0032] 2 - post-cast reinforced concrete slab belt;

[0033] 3 - floor beam;

[0034] 11 - autoclaved aerated concrete slab;

[0035] 111 - bottom surface of autoclaved aerated concrete slab;

[0036] 112 - anti-sliding groove;

[0037] 113 - anti-sliding pit;

[0038] 12 - cast-in-place reinforced concrete layer;

[0039] 121 - force steel bars;

[0040] 122 - distribution steel bars;

[0041] 123 - truss steel bars;

[0042] 2A - grooves;

[0043] 21 - post-cast steel reinforced concrete slab strip steel bars;

[0044] 22 - post-cast connecting concrete strips. DETAILED DESCRIPTION

[0045] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood, however, that the description is merely exemplary and is not intended to limit the scope of the present disclosure. In the following detailed description of the embodiments of the present disclosure, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. However, it would be apparent to those skilled in the art that the embodiments of the present disclosure can be practiced without these specific details. In other instances, well-known structures and techniques have been described in detail in order to avoid obscuring the concepts of the present disclosure.

[0046] The terms used herein are merely used to describe specific embodiments and are not intended to limit the present disclosure. The terms "include", "comprise" and the like used herein indicate the presence of the described features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0047] All terms used herein, including technical and scientific terms, have meanings commonly understood by one of ordinary skill in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having meanings consistent with the context of the present specification, and should not be interpreted in an idealized or overly formal manner.

[0048] Figure 1 A schematic diagram of a prefabricated autoclaved aerated concrete composite slab composite floor provided by an embodiment of the present disclosure is schematically shown.

[0049] As shown in Figure 1 An embodiment of the present disclosure provides a prefabricated autoclaved aerated concrete composite slab composite floor, which comprises a plurality of prefabricated autoclaved aerated concrete composite slabs 1 and post-cast steel reinforced concrete slab strips 2. The long ends of the plurality of prefabricated autoclaved aerated concrete composite slabs 1 are placed on a floor beam 3 and are tightly connected to each other in the width direction; the post-cast steel reinforced concrete slab strips 2 connect the plurality of prefabricated autoclaved aerated concrete composite slabs 1 and connect the plurality of prefabricated autoclaved aerated concrete composite slabs 1 and the floor beam 3, forming a prefabricated autoclaved aerated concrete composite slab composite floor.

[0050] In the embodiment, the prefabricated autoclaved aerated concrete composite slab 1 can be pre-installed in a factory, and the prefabricated autoclaved aerated concrete composite slab 1 is composed of an autoclaved aerated concrete slab 11 and a cast-in-place reinforced concrete layer 12. The thickness of the concrete layer is usually 50-100 mm, the thickness of the autoclaved aerated concrete slab 11 is usually 600 mm wide, the thickness is usually 75-250 mm, and the thickness of the composite slab is 125-350 mm. The embodiment does not specifically limit the size of the prefabricated autoclaved aerated concrete composite slab 1. The specific size of the prefabricated autoclaved aerated concrete composite slab 1 can be adjusted according to actual needs.

[0051] Figure 2 A top view of a prefabricated autoclaved aerated concrete composite slab provided by the embodiment of the present disclosure is schematically shown; Figure 3 A longitudinal section view of a prefabricated autoclaved aerated concrete composite slab is schematically shown, that is Figure 2 An A-A section of the prefabricated autoclaved aerated concrete composite slab shown; Figure 4 A transverse section view of a prefabricated autoclaved aerated concrete composite slab is schematically shown, that is Figure 2 A B-B section of the prefabricated autoclaved aerated concrete composite slab shown.

[0052] As Figures 2-4 shown, the cast-in-place reinforced concrete layer 12 is located below the autoclaved aerated concrete slab 11, and the width of the cast-in-place reinforced concrete layer 12 is greater than that of the autoclaved aerated concrete slab 11. Optionally, the cast-in-place reinforced concrete layer 12 is wider than the autoclaved aerated concrete slab 11 by 50-100 mm on each side in the width direction; the cast-in-place reinforced concrete layer 12 is provided with a plurality of distribution steel bars 122 parallel to the width direction thereof; the two ends of the distribution steel bars 122 protrude from the upper surface of the cast-in-place reinforced concrete layer 12 and are arranged on the two sides of the autoclaved aerated concrete slab 11, forming a "U" shape.

[0053] In an embodiment, the length of the cast-in-place reinforced concrete layer 12 is greater than that of the autoclaved aerated concrete slab 11. Optionally, the cast-in-place reinforced concrete layer 12 is longer than the autoclaved aerated concrete slab 11 by 100-200 mm at each end in the length direction. It can be understood by those skilled in the art that the specific size of the autoclaved aerated concrete slab 11 and the cast-in-place reinforced concrete layer 12 can be customized according to actual needs, and the above-mentioned size is only appropriate, but not a limitation of the present disclosure.

[0054] Further, the two ends of the cast-in-place reinforced concrete layer 12 can be provided with truss steel bars 123. The lower chord steel bars of the truss steel bars 123 are located in the cast-in-place reinforced concrete layer 12, and the upper chord steel bars of the truss steel bars 123 protrude from the surface of the cast-in-place reinforced concrete layer 12 and are lower than the surface of the autoclaved aerated concrete slab 11. Optionally, the upper chord steel bars of the truss steel bars 123 protrude from the surface of the concrete layer and are lower than the surface of the autoclaved aerated concrete slab 11 by about 25 mm.

[0055] The U-shaped steel bars and the truss steel bars 123 extend out of the cast-in-situ reinforced concrete layer 12 of the prefabricated autoclaved aerated concrete composite slab 1, and after pouring the post-pouring connecting concrete strips 22, the post-pouring connecting concrete strips 22 connect the composite slab to form a whole and stably connect with the floor beam 3. The specification of the U-shaped steel bars is generally Φ6@200@~Φ8@150. The truss steel bars are generally Φ8 for the upper and lower chord steel bars and Φ6 for the web steel bars. Alternatively, the specific model of the U-shaped steel bars and the truss steel bars can be adjusted according to actual needs, and is not specifically limited according to the above distances.

[0056] As shown in Figures 2-4 , in the cast-in-situ reinforced concrete layer 12, a plurality of stress steel bars 121 are arranged along the length direction. The stress steel bars 121 extend out of both ends of the cast-in-situ reinforced concrete layer 12 and are anchored into the floor beam 3, thereby enhancing the bearing capacity of the prefabricated autoclaved aerated concrete composite slab 1 and the stability of the combination between the prefabricated autoclaved aerated concrete composite slab 1 and the floor beam 3. Alternatively, the stress steel bars 121 extend out of the concrete slab 100~150mm and are anchored into the floor beam 3 along the length direction.

[0057] In an embodiment, the cross section of the autoclaved aerated concrete slab 11 is a right trapezoid. The side surface of the autoclaved aerated concrete slab 11 is inwardly inclined from bottom to top, so that the post-pouring connecting concrete strips 22 of the side surface of the autoclaved aerated concrete slab 11 form a cross section with a large upper part and a small lower part, thereby preventing the autoclaved aerated concrete slab 11 and the cast-in-situ reinforced concrete layer 12 from separating when the autoclaved aerated concrete slab 11 and the cast-in-situ reinforced concrete layer 12 have a tendency to separate under the action of the vertical force, thereby ensuring the normal work of the composite slab and guaranteeing the safety of the structure. Referring to Figure 4 , the slope a:b of the side surface of the autoclaved aerated concrete slab 11 is about 1:10.

[0058] Further, in the prefabricated autoclaved aerated concrete composite slab 1 provided in the embodiments of the present disclosure, the combination surface (i.e. the lower surface 111) of the autoclaved aerated concrete slab 11 and the cast-in-situ reinforced concrete layer 12 is provided with an anti-sliding groove 112 or a pit 113.

[0059] Figure 5 and Figure 6 The perspective view schematically shows the autoclaved aerated concrete slab provided with the anti-sliding groove 112 or the anti-sliding pit 113 according to the embodiments of the present disclosure.

[0060] As shown in Figure 5 , in an embodiment, the lower surface 111 of the autoclaved aerated concrete slab 11 is provided with a plurality of anti-sliding grooves 112 at equal intervals. As shown in Figure 6As shown, in another embodiment, the lower surface 111 of the autoclaved aerated concrete slab 11 is provided with a plurality of anti-sliding pits 113 at equal intervals. By providing the anti-sliding groove 112 or the anti-sliding pit 113 on the lower surface 111 of the autoclaved aerated concrete slab 11, sliding or displacement between the autoclaved aerated concrete slab 11 and the cast-in-place reinforced concrete layer 12 can be prevented, and the overlapping effect of the autoclaved aerated concrete slab 11 and the cast-in-place reinforced concrete layer 12 can be enhanced.

[0061] In the present embodiment, the area of the anti-sliding groove 112 or the pit 113 satisfies the following formula:

[0062] A 111 ∶A 112 =1.1f t砼 ∶f t加 ;

[0063] wherein A 111 represents the total area of the slab bottom of the autoclaved aerated concrete slab 11, A 112 represents the total area of the anti-sliding groove 112 or the pit 113, f t砼 represents the design value of the tensile strength of the concrete of the cast-in-place reinforced concrete layer 12, and f t加 represents the design value of the splitting tensile strength of the autoclaved aerated concrete slab 11.

[0064] The present disclosure does not limit the specific form of the anti-sliding groove 112 and the pit 113 described above, for example, the groove 112 can be a straight-line groove, a curved groove, a spiral groove, or the like, the pit 113 can be a circular pit, a rectangular pit, a diamond-shaped pit, a triangular pit, or the like, and the depth of the groove 112 and the pit 113 is not specifically limited herein.

[0065] Figure 7A A schematic diagram of a precast autoclaved aerated concrete composite slab combined floor without cast-in-place reinforced concrete slab strip 2 is shown; Figure 7B A schematic diagram of a precast autoclaved aerated concrete composite slab combined floor is shown, which can be referred to as Figure 1 The C-C section of the precast autoclaved aerated concrete composite slab combined floor is shown.

[0066] As Figure 7A When the adjacent precast autoclaved aerated concrete composite slabs 1 are closely packed, the cast-in-place reinforced concrete layers 12 of the two precast autoclaved aerated concrete composite slabs 1 are spliced, a groove 2A is formed between the autoclaved aerated concrete slabs 11 of the two precast autoclaved aerated concrete composite slabs 1, and the U-shaped steel bars protruding from the cast-in-place reinforced concrete layers 12 of the precast autoclaved aerated concrete composite slabs 1 are located in the groove 2A. As Figure 7BAs shown, the post-cast reinforced concrete slab strip 2 comprises slab strip reinforcement 21 and post-cast connecting concrete strip 22; the slab strip reinforcement 21 is arranged between the distribution reinforcement 122 protruding from the adjacent precast autoclaved aerated concrete composite slab 1, and the post-cast connecting concrete strip 22 is cast in the groove 2A between the autoclaved aerated concrete slabs 11 of the adjacent precast autoclaved aerated concrete composite slab 1, thereby connecting the plurality of closely-spaced precast autoclaved aerated concrete composite slabs 1 to form a whole. The slab strip reinforcement 21 comprises longitudinal reinforcement and stirrups.

[0067] Figure 8A Fig. 6 schematically shows a slab end cross-sectional view of the autoclaved aerated concrete composite slab combined floor when the post-cast reinforced concrete slab strip 2 is not cast according to an embodiment of the present disclosure; Figure 8B Fig. 6 schematically shows a slab end cross-sectional view of the autoclaved aerated concrete composite slab combined floor according to an embodiment of the present disclosure, which can be referred to as Figure 1 Fig. 7 shows a D-D cross-sectional view of the autoclaved aerated concrete composite slab combined floor according to an embodiment of the present disclosure.

[0068] As shown in Fig. 1, Figure 8A Fig. 2 schematically shows a precast autoclaved aerated concrete composite slab 1 according to an embodiment of the present disclosure, which can be referred to as Figure 1 The precast autoclaved aerated concrete composite slab 1 is placed on the floor beam 3 at both longitudinal ends, wherein the autoclaved aerated concrete slab 11 and the floor beam 3 form a groove 2A due to the length of the cast-in-place reinforced concrete layer 12 of the precast autoclaved aerated concrete composite slab 1 being greater than that of the autoclaved aerated concrete slab 11. When the truss reinforcement 123 is arranged at both ends of the cast-in-place reinforced concrete layer 12, the truss reinforcement 123 is located in the groove 2A. As shown in Fig. 1, Figure 8B The slab strip reinforcement 21 is arranged between the truss reinforcement 123 of the cast-in-place reinforced concrete layer 12 and the floor beam, and the post-cast reinforced concrete slab strip 2 is cast to fixedly connect the both ends of the precast autoclaved aerated concrete composite slab 1 to the floor beam, thereby forming a precast autoclaved aerated concrete composite slab combined floor.

[0069] In the precast autoclaved aerated concrete composite slab 1 provided in the embodiment, the autoclaved aerated concrete slab 11 is arranged above and the cast-in-place reinforced concrete layer 12 is arranged below. Compared with the common composite form in which the cast-in-place reinforced concrete layer 12 is arranged above and the autoclaved aerated concrete slab 11 is arranged below, the precast autoclaved aerated concrete composite slab 1 provided in the embodiment has the following advantages: the slab stress reinforcement 121 is wrapped in the concrete layer, the corrosion resistance is strong, and the durability of the floor slab is improved; the slab stress reinforcement 121 is wrapped in the concrete layer, the adhesion is strong, and the ductility of the floor slab is improved; the post-cast concrete slab band 2 is arranged between the precast autoclaved aerated concrete composite slabs 1 and between the precast autoclaved aerated concrete composite slab 1 and the floor beam 3, the integrity of the floor slab is improved, the floor slab participates in vertical stress, the vertical bearing capacity of the floor slab is improved, and the structural material is reduced; the design of the composite floor slab makes the bottom of the composite floor slab a concrete layer, which facilitates the suspension of pipeline equipment at the bottom of the slab.

[0070] The precast autoclaved aerated concrete composite floor built based on the precast autoclaved aerated concrete composite slab 1 provided in the embodiment has the advantages of light weight, good heat and sound insulation effect, convenient construction and installation, good integrity and high bearing capacity of the floor, is beneficial to building earthquake resistance, and has high degree of building industrialization.

[0071] The disclosure also provides a manufacturing method of a precast autoclaved aerated concrete composite floor slab composite floor, which is applied to the precast autoclaved aerated concrete composite floor slab composite floor as shown in the embodiment. Figure 1 The method comprises the following steps.

[0072] The plurality of precast autoclaved aerated concrete composite slabs 1 are tightly spliced in the width direction, and the two ends of each precast autoclaved aerated concrete composite slab 1 are arranged on the floor beam 3.

[0073] The distribution steel bars 122 extending out of the adjacent precast autoclaved aerated concrete composite slabs 1 and the end portions of each precast autoclaved aerated concrete composite slab 1 and the floor beam 3 are arranged with slab band steel bars 21.

[0074] The post-cast connecting concrete bands 22 are cast in the grooves 2A between the adjacent precast autoclaved aerated concrete composite slabs 1 and the grooves 2A between each precast autoclaved aerated concrete composite slab 1 and the floor beam 3, and the precast autoclaved aerated concrete composite floor slab composite floor is formed.

[0075] In an embodiment, the prefabricated autoclaved aerated concrete composite slab 1 is prefabricated in a factory, and the post-cast reinforced concrete slab strip 2 is cast on site. The cast-in-place reinforced concrete layer 12 is provided with stress reinforcement 121 along the length of the slab and distribution reinforcement 122 perpendicular to the length of the slab. The stress reinforcement 121 extends out of the concrete slab along the length of the slab and is anchored into the floor beam 3. The distribution reinforcement 122 extends upward from the cast-in-place layer at the edge of the slab in a "U" shape. Truss reinforcement 123 perpendicular to the length of the slab is provided in the cast-in-place concrete layer at the ends of the length of the slab protruding from the autoclaved aerated concrete slab 11. The U-shaped reinforcement and truss reinforcement 123 extend out of the cast-in-place reinforced concrete layer 12 of the prefabricated autoclaved aerated concrete composite slab 1, and after the post-cast connecting concrete strip 22 is cast, the post-cast reinforced concrete slab strip connects the composite slab to form a whole and is stably connected to the floor beam 3. The joint surface 111 between the autoclaved aerated concrete slab 11 and the cast-in-place reinforced concrete layer 12 is provided with anti-sliding grooves 112 or pits 113 to prevent sliding or displacement between the autoclaved aerated concrete slab 11 and the cast-in-place reinforced concrete layer 12.

[0076] The combined floor system constructed in this embodiment is a one-way floor system. During the construction phase, the prefabricated autoclaved aerated concrete composite slab 1 bears its self-weight and construction load. During the use phase, the prefabricated autoclaved aerated concrete composite slab 1 and the post-cast reinforced concrete slab strip 2 bear the floor system self-weight and use live load.

[0077] The manufacturing method of the prefabricated autoclaved aerated concrete composite slab combined floor system takes advantage of the combination of the autoclaved aerated concrete slab 11, the cast-in-place reinforced concrete layer 12, and the post-cast reinforced concrete slab strip 2, reduces the floor system self-weight, improves the floor system thermal insulation and sound insulation performance, facilitates installation and construction, and has good floor system integrity, which is conducive to improving the level of building industrialization.

[0078] Those skilled in the art can understand that the features described in various embodiments and / or claims of the present disclosure can be combined or / and integrated in various combinations, even if such combinations are not explicitly described in the present disclosure. In particular, the features described in various embodiments and / or claims of the present disclosure can be combined and / or integrated in various combinations without departing from the spirit and teachings of the present disclosure. All such combinations and / or integrations fall within the scope of the present disclosure.

[0079] Although the present disclosure has been shown and described with respect to certain exemplary embodiments thereof, it should be understood by those skilled in the art that various changes in form and detail can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined by the appended claims alone.

Claims

1. A precast autoclaved aerated concrete laminated slab composite floor system, characterized by, The application relates to a prefabricated autoclaved aerated concrete composite slab combination floor system. The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab is composed of an autoclaved aerated concrete slab and a cast-in-place reinforced concrete layer; the cast-in-place reinforced concrete layer is arranged below the autoclaved aerated concrete slab, and the width of the cast-in-place reinforced concrete layer is greater than that of the autoclaved aerated concrete slab; a plurality of distribution steel bars parallel to the width direction of the cast-in-place reinforced concrete layer are arranged in the cast-in-place reinforced concrete layer; the two ends of the distribution steel bars are arranged on the upper surface of the cast-in-place reinforced concrete layer and are arranged on the two sides of the autoclaved aerated concrete slab to form a "U" shape; The cast-in-place reinforced concrete slab belt comprises belt steel bars and cast-in-place connecting concrete belts; the belt steel bars are arranged between the distribution steel bars arranged on the adjacent prefabricated autoclaved aerated concrete composite slabs; the cast-in-place connecting concrete belts are cast in the grooves between the autoclaved aerated concrete slabs of the adjacent prefabricated autoclaved aerated concrete composite slabs and the grooves between the autoclaved aerated concrete slabs of the prefabricated autoclaved aerated concrete composite slabs and the floor beams; The cross section of the autoclaved aerated concrete slab is a regular trapezoid. The joint surface of the autoclaved aerated concrete slab and the cast-in-place reinforced concrete layer is provided with anti-sliding grooves or pits.

2. The pre-fabricated autoclaved aerated concrete sandwich panel composite floor according to claim 1, characterized in that, The area of the anti-sliding grooves or pits satisfies the following formula:

3. The pre-fabricated autoclaved aerated concrete sandwich panel composite floor according to claim 2, characterized in that, The length of the cast-in-place reinforced concrete layer is greater than that of the autoclaved aerated concrete slab; the two ends of the cast-in-place reinforced concrete layer are arranged on the floor beams to form grooves between the autoclaved aerated concrete slabs and the floor beams. A 111 : A 112 = 1.1f t砼 : f t加 ; wherein A 111 represents the total area of the bottom of the autoclaved aerated concrete slab, A 112 represents the total area of the anti-sliding groove or pit, f t砼 represents the design value of the tensile strength of the cast-in-place reinforced concrete layer, f t加 represents the design value of the splitting tensile strength of the autoclaved aerated concrete slab.

4. The pre-fabricated autoclaved aerated concrete sandwich panel composite floor according to claim 1, characterized in that, The two ends of the cast-in-place reinforced concrete layer are provided with truss steel bars; the lower chord steel bars of the truss steel bars are arranged in the cast-in-place reinforced concrete layer; the upper chord steel bars of the truss steel bars protrude from the surface of the cast-in-place reinforced concrete layer and are lower than the surface of the autoclaved aerated concrete slab.

5. The pre-fabricated autoclaved aerated concrete sandwich panel composite floor according to claim 4, characterized in that, The belt steel bars are arranged between the truss steel bars and the floor beams.

6. The pre-fabricated autoclaved aerated concrete sandwich panel composite floor according to claim 5, characterized in that, A plurality of stress steel bars are arranged in the cast-in-place reinforced concrete layer along the length direction; the stress steel bars are arranged on the two ends of the cast-in-place reinforced concrete layer and are anchored into the floor beams.

7. The pre-fabricated autoclaved aerated concrete sandwich panel composite floor according to claim 1, characterized in that, The belt steel bars comprise longitudinal steel bars and stirrups.

8. The pre-fabricated autoclaved aerated concrete sandwich panel composite floor according to claim 1, characterized in that, The application relates to a prefabricated autoclaved aerated concrete composite slab combination floor system.

9. A method of manufacturing a precast autoclaved aerated concrete composite floor slab assembly according to any one of claims 1 to 8, characterized in that, The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab combination floor system comprises the following parts: The prefabricated autoclaved aerated concrete composite slab

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