Beam-slab integrated unit composite frame and construction method thereof

Abstract

The present invention relates to a beam-slab integrated unit composite frame and its construction method. The beam-slab integrated unit composite frame comprises A-type precast beam-slab units, B-type precast beam-slab units, C-type precast beam-slab units, composite slabs, precast composite beams, concrete columns, and a cast-in-place concrete surface layer. The construction method is as follows: the A-type precast beam-slab units are hoisted onto and erected on the concrete columns in the short span area; the precast composite beams are then hoisted onto the supporting members B of the concrete columns in the short span area; several C-type precast beam-slab units are laid in the long span area; or the B-type precast beam-slab units and several composite slabs are laid in the long span area; and finally, concrete is poured to form the cast-in-place concrete surface layer. The advantages of the present invention are that it significantly reduces the number of precast components and the number of molds for the precast beam-slab units. Later, it can be combined with low-cost composite slabs to meet the construction needs of specific housing configurations to the greatest extent possible at the lowest cost and efficiency.

Description

Technical Field

[0001] The present invention relates to the field of prefabricated assembled buildings, and in particular to a beam-slab integrated unit combined frame and a construction method thereof. Background Art

[0002] Existing prefabricated concrete buildings using composite floor slabs and precast composite beams typically require support structures during construction. This becomes complex and expensive when the floor heights are high. Therefore, to speed up construction and reduce project costs, prefabricated structures that require no support or formwork are of great practical value.

[0003] In order to solve the above problems, CN216305076U discloses a precast concrete structure with integrated beams and slabs, which realizes the on-site construction of precast concrete structures without support and formwork, can significantly speed up the construction speed and significantly reduce the on-site construction cost.

[0004] Currently, the above patent is applicable to most types of housing structures, but it is applicable to some specific types of housing structures, such as dormitories or classrooms with single-sided external corridors; the span between the concrete columns corresponding to the corridor part is a short span area, and the dormitory or classroom is a combination of short span and long span.

[0005] When the above patent is used for construction, the beam-slab separation combination scheme is still adopted in the construction of the short span area, that is, the main beam with supporting parts is installed first, and then the composite plate unit is installed, which causes the problem of low lifting efficiency.

[0006] On the other hand, when the bay sizes are different, if the above-mentioned patent is adopted, prefabricated beam and slab units of different widths need to be produced, and prefabricated beam and slab units of corresponding widths need to be additionally customized; if the prefabricated concrete structure with integrated beams and slabs disclosed in CN216305076U is used to build the above-mentioned type of house, then each time it is built, it is highly likely that multiple sets of molds will need to be additionally customized, thereby increasing the cost of building the house. Summary of the Invention

[0007] The purpose of the present invention is to provide a beam-slab integrated unit combined frame and a construction method thereof, which significantly reduces the number of prefabricated components and the number of molds for prefabricated beam-slab units, and can be later combined with low-cost composite panels to meet the construction of specific configuration houses to the greatest extent at the lowest cost and efficiency.

[0008] The present invention is realized by the following technical solution: a beam-slab integrated unit composite frame, which includes an A-type precast beam-slab unit 1, a B-type precast beam-slab unit 2, a C-type precast beam-slab unit 3, a composite slab 4, a precast composite beam 5, a concrete column 6 and a cast-in-place concrete surface layer 7;

[0009] The A-shaped precast beam slab unit 1 comprises an A-shaped slab 11 and A-shaped beams 12 provided on the left and right sides of the A-shaped slab 11, wherein the A-shaped beams 12 are full-width beam structures;

[0010] The B-type precast beam-slab unit 2 comprises a B-type flat plate 21 and B-type beams 22 provided on the left and right sides of the B-type flat plate 21, wherein the two B-type beams 22 are respectively a full-beam-width beam structure and a half-beam-width beam structure;

[0011] The C-shaped precast beam plate unit 3 includes a C-shaped flat plate 31 and C-shaped beams 32 provided on the left and right sides of the C-shaped flat plate 31, wherein the C-shaped beams 32 are half-beam width beam structures;

[0012] The composite slab 4 is a reinforced concrete slab, and outwardly extending steel bars 41 are provided on both sides of the reinforced concrete slab;

[0013] The concrete columns 6 are arranged in an array. The concrete columns 6 are provided with supporting members A61 for supporting the A-type precast beam and slab units 1 and supporting members B62 for supporting the precast composite beams 5. Some concrete columns 6 are also provided with supporting members C63 for supporting the B-type precast beam and slab units 2 or the C-type precast beam and slab units 3. The tops of the concrete columns 6 are provided with column extension steel bars 64 extending upward.

[0014] In the left-right direction, the span between adjacent rows of concrete columns 6 is divided into a long span area and a short span area; the long span area is located between the two short span areas, and the span of the short span area is similar to the width of the A-type precast beam-slab unit 1;

[0015] The A-shaped precast beam-slab unit 1 is placed in a front-to-back direction and the A-shaped beam 12 is mounted on the supporting member A61 of the short span concrete column 6; and the A-shaped beam 12 mounted on the supporting member A61 is provided with A-shaped extended steel bars 13 and A-shaped shear key grooves 17 at both ends.

[0016] The A-type precast beam-slab unit 1 is provided with precast composite beams 5 arranged in a left-right direction in front and behind. The precast composite beams 5 are also mounted on the supporting members B62 of the short-span concrete columns 6. The two ends of the precast composite beams 5 are provided with beam extension steel bars 53 and beam end shear key slots 57.

[0017] Several supporting grooves 19 are provided on the outer side of the A-shaped beam 12 near the long span area of the A-shaped precast beam and slab unit 1;

[0018] The long span area is divided into C-type precast beam and slab unit 3 laying and B-type precast beam and slab unit 2 and composite slab 4 mixed laying;

[0019] The C-shaped precast beam and slab units 3 are laid out in a left-right orientation and sequentially laid from front to back in the long span area. The C-shaped beams 32 in the C-shaped precast beam and slab units 3 are mounted on the supporting members C63 and supporting grooves 19 of the concrete columns 6 in the long span area. C-shaped extension bars 33 and C-shaped shear key grooves 37 are provided at both ends of the C-shaped beams 32 mounted on the supporting members C63.

[0020] The mixed laying method of the B-type precast beam-slab units 2 and the composite slabs 4 is as follows: the B-type precast beam-slab units 2 are arranged in a left-right direction and laid at the front and rear ends of the long span area, so that the middle of the long span area forms a waiting area for laying; wherein, the half-beam-width B-type beams 22 of the B-type precast beam-slab units 2 are mounted on the supporting members C63 of the concrete columns 6 in the long span area, and the full-beam-width B-type beams 22 are mounted on the supporting grooves 19; the steel bars 41 of several composite slabs are mounted on the full-beam-width B-type beams 22; wherein, the B-type beams 22 mounted on the supporting members C63 are provided with B-type protruding steel bars 23 and B-type shear key grooves 27 at both ends.

[0021] The structural surface formed by the A-type precast beam-slab unit 1, the B-type precast beam-slab unit 2, the composite slab 4, the precast composite beam 5, and the concrete column 6, and the concrete poured at the beam-column joints to form a cast-in-situ concrete surface layer 7; or

[0022] The structural surface formed by the A-type precast beam-slab unit 1, the C-type precast beam-slab unit 3, the precast composite beam 5, and the concrete column 6, and the cast-in-situ concrete surface layer 7 are formed by pouring concrete at the beam-column joints.

[0023] A construction method for a beam-slab integrated unit composite frame comprises the following steps:

[0024] S1. Complete the construction of the array of concrete columns 6; wherein, according to the left and right directions, the span between adjacent rows of concrete columns 6 is divided into long span and short span areas; the long span area is located between the two short span areas, and the span of the short span area is similar to the width of the A-type precast beam unit 1;

[0025] S2. The A-type precast beam unit 1 is hoisted to the short span area and placed forward and backward to be erected on the supporting member A61 of the short span concrete column 6;

[0026] S3. The precast composite beam 5 is hoisted to the front and rear sides of the short span A-type precast beam unit 1, and then erected on the supporting member B62 of the short span concrete column 6;

[0027] S4. Lay several C-shaped precast beam units 3 in the long span area; or

[0028] Lay the B-type precast beam-slab unit 2 and several composite slabs 4 in the long span area;

[0029] S5. Pour concrete on the basis of S4 to form a cast-in-place concrete surface layer 7.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. It retains all the advantages of precast concrete structure with integrated beam and slab, that is, it can realize on-site construction without support and formwork, which can significantly speed up the construction speed and significantly reduce on-site construction costs; at the same time, it is ultimately applicable to a wider range of house types.

[0032] 2. There is no need to use a beam-slab separation combination scheme in the short span area, and there is no need to use a main beam with supporting parts. The precast beam-slab unit is placed in the supporting groove of the A-type precast beam-slab unit, which improves the overall lifting efficiency.

[0033] 3. Type B precast beam and slab units and Type C precast beam and slab units can share a single set of molds because the width of the plates between the ribs is the same. Considering the characteristics of the existing molds for precast beam and slab units that are adjustable in length and rib width, but the width of the plates inside the ribs is not adjustable, the existing molds can be utilized to the greatest extent to meet the customization requirements of precast beam and slab units in various house types. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure after the overall layout of the present invention;

[0035] Figure 2 It is the structural diagram of A-type precast beam-slab unit;

[0036] Figure 3 It is the structural diagram of B-type precast beam-slab unit;

[0037] Figure 4 It is a structural diagram of the C-type precast beam-slab unit;

[0038] Figure 5 is a structural diagram of a composite plate;

[0039] Figure 6 This is a structural diagram of a prefabricated composite beam;

[0040] Figure 7 It is a schematic diagram of a concrete column structure with two types of supporting members;

[0041] Figure 8 Schematic diagram of a concrete column structure with three types of supporting members;

[0042] Figure 9 This is a schematic diagram of the concrete column layout in step 1;

[0043] Figure 10 Schematic diagram of erecting A-type precast beam-slab units on concrete columns in step 2;

[0044] Figure 11Schematic diagram of erecting prefabricated composite beams on concrete columns in step 3;

[0045] Figure 12 This is a schematic diagram of laying the first C-shaped precast beam-slab unit in the non-standard span area in step 4;

[0046] Figure 13 This is a schematic diagram of laying all C-type precast beam-slab units in the non-standard span area in step 4;

[0047] Figure 14 This is a schematic diagram after pouring the cast-in-place concrete surface layer in step 5;

[0048] Figure 15 This is a schematic diagram of laying the front and rear end B-type precast beam and slab units in the non-standard span area in step 4;

[0049] Figure 16 Schematic diagram of laying the first composite slab in the area to be laid in step 4;

[0050] Figure 17 This is a schematic diagram of laying all the composite panels in the area to be laid in step 4.

[0051] Description of labels:

[0052] 1-A type precast beam-slab unit, 11-A type slab, 12-A type beam, 13-A type longitudinal reinforcement, 14-A type groove, 15-A type stirrup, 16-A type truss reinforcement, 17-A type shear keyway, 19-support groove;

[0053] 2-B type precast beam-slab unit, 21-B type slab, 22-B type beam, 23-B type longitudinal reinforcement, 24-B type groove, 25-B type stirrup, 26-B type truss reinforcement, 27-B type shear keyway;

[0054] 3-C precast beam-slab elements, 31-C slabs, 32-C beams, 33-C longitudinal reinforcement, 34-C grooves, 35-C stirrups, 36-C truss reinforcement, 37-C shear keyways;

[0055] 4- composite plate, 41- reinforcement, 46- D-type truss reinforcement;

[0056] 5- precast composite beam, 53- beam longitudinal reinforcement, 55- beam stirrups, 57- D-type shear keyway;

[0057] 6-concrete column, 61-supporting part A, 62-supporting part B, 63-supporting part C, 64-column extension steel bar;

[0058] 7-Cast-in-place concrete surface layer. DETAILED DESCRIPTION

[0059] In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0060] The present invention is described in detail below with reference to the accompanying drawings:

[0061] like Figure 1-8 As shown: beam-slab integrated unit composite frame, characterized in that: it includes A-type precast beam-slab unit 1, B-type precast beam-slab unit 2, C-type precast beam-slab unit 3, composite slab 4, precast composite beam 5, concrete column 6 and cast-in-place concrete surface layer 7;

[0062] The A-shaped precast beam slab unit 1 comprises an A-shaped slab 11 and A-shaped beams 12 provided on the left and right sides of the A-shaped slab 11, wherein the A-shaped beams 12 are full-width beam structures;

[0063] The B-type precast beam-slab unit 2 comprises a B-type flat plate 21 and B-type beams 22 provided on the left and right sides of the B-type flat plate 21, wherein the two B-type beams 22 are respectively a full-beam-width beam structure and a half-beam-width beam structure;

[0064] The C-shaped precast beam plate unit 3 includes a C-shaped flat plate 31 and C-shaped beams 32 provided on the left and right sides of the C-shaped flat plate 31, wherein the C-shaped beams 32 are half-beam width beam structures;

[0065] The composite slab 4 is a reinforced concrete slab, and outwardly extending steel bars 41 are provided on both sides of the reinforced concrete slab;

[0066] The concrete columns 6 are arranged in an array. The concrete columns 6 are provided with supporting members A61 for supporting the A-type precast beam and slab units 1 and supporting members B62 for supporting the precast composite beams 5. Some concrete columns 6 are also provided with supporting members C63 for supporting the B-type precast beam and slab units 2 or the C-type precast beam and slab units 3. The tops of the concrete columns 6 are provided with column extension steel bars 64 extending upward.

[0067] In the left-right direction, the span between adjacent rows of concrete columns 6 is divided into a long span area and a short span area; the long span area is located between the two short span areas, and the span of the short span area is similar to the width of the A-type precast beam-slab unit 1;

[0068] The A-shaped precast beam-slab unit 1 is placed in a front-to-back direction and the A-shaped beam 12 is mounted on the supporting member A61 of the short span concrete column 6; and the A-shaped beam 12 mounted on the supporting member A61 is provided with A-shaped extended steel bars 13 and A-shaped shear key grooves 17 at both ends.

[0069] The A-type precast beam-slab unit 1 is provided with precast composite beams 5 arranged in a left-right direction in front and behind. The precast composite beams 5 are also mounted on the supporting members B62 of the short-span concrete columns 6. The two ends of the precast composite beams 5 are provided with beam extension steel bars 53 and beam end shear key slots 57.

[0070] Several supporting grooves 19 are provided on the outer side of the A-shaped beam 12 near the long span area of the A-shaped precast beam and slab unit 1;

[0071] The long span area is divided into C-type precast beam and slab unit 3 laying and B-type precast beam and slab unit 2 and composite slab 4 mixed laying;

[0072] The C-shaped precast beam and slab units 3 are laid out in a left-right orientation and sequentially laid from front to back in the long span area. The C-shaped beams 32 in the C-shaped precast beam and slab units 3 are mounted on the supporting members C63 and supporting grooves 19 of the concrete columns 6 in the long span area. C-shaped extension bars 33 and C-shaped shear key grooves 37 are provided at both ends of the C-shaped beams 32 mounted on the supporting members C63.

[0073] The mixed laying method of the B-type precast beam-slab units 2 and the composite slabs 4 is as follows: the B-type precast beam-slab units 2 are arranged in a left-right direction and laid at the front and rear ends of the long span area, so that the middle of the long span area forms a waiting area for laying; wherein, the half-beam-width B-type beams 22 of the B-type precast beam-slab units 2 are mounted on the supporting members C63 of the concrete columns 6 in the long span area, and the full-beam-width B-type beams 22 are mounted on the supporting grooves 19; the steel bars 41 of several composite slabs are mounted on the full-beam-width B-type beams 22; wherein, the B-type beams 22 mounted on the supporting members C63 are provided with B-type protruding steel bars 23 and B-type shear key grooves 27 at both ends.

[0074] The structural surface formed by the A-type precast beam-slab unit 1, the B-type precast beam-slab unit 2, the composite slab 4, the precast composite beam 5, and the concrete column 6, and the concrete poured at the beam-column joints to form a cast-in-situ concrete surface layer 7; or

[0075] The structural surface formed by the A-type precast beam-slab unit 1, the C-type precast beam-slab unit 3, the precast composite beam 5, and the concrete column 6, and the cast-in-situ concrete surface layer 7 are formed by pouring concrete at the beam-column joints.

[0076] The purpose of adopting the above structure is to utilize the characteristics of existing precast beam and slab unit molds: adjustable length and adjustable rib width, but non-adjustable rib inner plate width. In the present invention, both the B-type precast beam and slab unit 2 and the C-type precast beam and slab unit 3 are produced using the same mold, and both have the same rib inner plate width. The lengths of the B-type precast beam and slab unit 2 and the C-type precast beam and slab unit 3 are adjusted according to the span of the non-standard span area.

[0077] It should be noted that if the front-to-back length of the non-standard span area is an integer multiple of the width of the C-type precast beam-slab unit 3, the C-type precast beam-slab unit 3 is directly laid in the non-standard span area. If the front-to-back length of the non-standard span area does not meet the requirement of an integer multiple of the width of the C-type precast beam-slab unit 3, the B-type precast beam-slab unit 2 is first laid, and the composite slab 4 is laid in the non-standard span area.

[0078] Since the area to be laid can be calculated based on the size of the house to be built and the width of the prefabricated beam and slab unit, the specifications of the composite slab 4 can be calculated based on the size of the area to be laid, and the corresponding size composite slab 4 can be prefabricated in the factory before construction. Since the manufacturing method of the composite slab 4 is relatively simple, low-cost and easy to construct, the construction speed of the present invention is fast and the on-site construction cost is low.

[0079] The present invention mentions the extended steel bars, which ensure the firmness of the connection between various types of prefabricated beam-slab units and the prefabricated composite beams 5 and the concrete columns 6.

[0080] Furthermore, an A-shaped groove 14 is provided at the top corner of the A-shaped beam 12 of the A-shaped precast beam-slab unit 1, and an A-shaped stirrup 15 is embedded in the A-shaped beam 12 and extends from the top of the A-shaped beam 12;

[0081] The top corners of the B-shaped beam 22 of the B-shaped precast beam-slab unit 2 are provided with B-shaped grooves 24, and B-shaped stirrups 25 are embedded in the B-shaped beam 22 and extend from the top of the B-shaped beam 22;

[0082] The top corners of the C-shaped beam 32 of the C-shaped precast beam-slab unit 3 are provided with C-shaped grooves 34 , and C-shaped stirrups 35 are embedded in the C-shaped beam 32 and extend from the top of the C-shaped beam 32 ;

[0083] Beam stirrups 55 are embedded in the prefabricated composite beam 5 and extend from the top of the prefabricated composite beam 5 .

[0084] The stirrups of the above-mentioned various types of precast beam-slab units and precast composite beams are used to enhance the connection strength between the precast components and the cast-in-place concrete surface layer.

[0085] Furthermore, the A-shaped flat plate 11 is provided with an array of A-shaped truss steel bars 16 perpendicular to the A-shaped beam 12;

[0086] The B-shaped flat plate 21 is provided with an array of B-shaped truss steel bars 26 perpendicular to the B-shaped beam 22;

[0087] The C-shaped flat plate 31 is provided with an array of C-shaped truss steel bars 36 perpendicular to the C-shaped beam 32;

[0088] The composite plate 4 is provided with an array of D-shaped truss steel bars 46 parallel to the steel bar portion 41 .

[0089] The truss reinforcements of the above-mentioned various types of precast beam-slab units and the truss reinforcements of the composite slabs also ensure the connection strength between the precast components and the cast-in-place concrete surface layer.

[0090] The above-mentioned construction method of the beam-slab integrated unit composite frame comprises the following steps:

[0091] S1. Complete the array construction of concrete columns 6; wherein, according to the left and right directions, the span between adjacent rows of concrete columns 6 is divided into long span areas and short span areas; the long span area is located between the two short span areas, and the span of the short span area is similar to the width of the A-type precast beam unit 1, such as Figure 9 As shown;

[0092] S2..Hang the A-type precast beam and slab unit 1 to the short span area and place it in a front-to-back direction to be erected on the supporting member A61 of the concrete column 6 of the short span area, such as Figure 10 As shown;

[0093] S3. The precast composite beam 5 is hoisted to the front and rear sides of the short span A-type precast beam-slab unit 1, and then erected on the supporting member B62 of the short span concrete column 6, such as Figure 11 As shown;

[0094] S4. Lay several C-shaped precast beam units 3 in the long span area; or

[0095] The B-type precast beam-slab unit 2 and several composite slabs 4 are laid in the long span area, such as Figure 12 、 13 , 15, 16, 17;

[0096] S5. Cast concrete on the basis of S4 to form a cast-in-place concrete surface layer 7. Figure 14 shown.

[0097] Among them, the specific laying method and conditions of S4 are:

[0098] When the front and rear spans of the long span area meet the requirements of the width of the C-shaped precast beam and slab unit 3, the C-shaped precast beam and slab unit 3 is hoisted and placed in a left-right direction, and then laid in the long span area from front to back in sequence, so that the C-shaped beam 32 of the C-shaped precast beam and slab unit 3 is erected on the supporting member C63 and the supporting groove 19 of the concrete column 6 of the long span area. Figure 12 、 13 shown; or

[0099] When the front and rear spans of the long span area do not meet the requirements of an integer multiple of the width of the C-type precast beam and slab unit 3; first, two sets of B-type precast beam and slab units 2 are hoisted and placed in the left and right directions, and then respectively laid at the front and rear ends of the long span area to form a waiting area in the middle of the long span area; wherein, the half-beam-width B-type beam 22 of the B-type precast beam and slab unit 2 is erected on the supporting member C63 of the concrete column 6 of the long span area, and the full-beam-width B-type beam 22 of the C-type precast beam and slab unit 3 is erected on the supporting groove 19; finally, a number of composite slabs 4 are laid in the waiting area and the steel bar portion 41 of the composite slab 4 is erected on the full-beam-width B-type beam 22, as shown in FIG. Figure 16 、 17 shown.

[0100] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Beam-slab integrated unit combined frame, characterized by: It includes an A-type precast beam-slab unit (1), a B-type precast beam-slab unit (2), a C-type precast beam-slab unit (3), a composite slab (4), a precast composite beam (5), a concrete column (6), and a cast-in-place concrete surface layer (7); The A-type prefabricated beam-slab unit (1) comprises an A-type flat plate (11) and A-type beams (12) arranged on the left and right sides of the A-type flat plate (11), wherein the A-type beams (12) are full-width beam structures; The B-type prefabricated beam-slab unit (2) comprises a B-type flat plate (21) and B-type beams (22) respectively arranged on the left and right sides of the B-type flat plate (21), wherein the two B-type beams (22) are respectively a full-beam-width beam structure and a half-beam-width beam structure; The C-shaped prefabricated beam-slab unit (3) comprises a C-shaped flat plate (31) and C-shaped beams (32) arranged on the left and right sides of the C-shaped flat plate (31), wherein the C-shaped beams (32) are half-beam-width beam structures; The composite slab (4) is a reinforced concrete slab, and outwardly extending steel bars (41) are provided on both sides of the reinforced concrete slab; The concrete columns (6) are distributed in an array, and are provided with supporting members A (61) for supporting the A-type precast beam and slab unit (1) and supporting members B (62) for supporting the precast composite beam (5), and some concrete columns (6) are further provided with supporting members C (63) for supporting the B-type precast beam and slab unit (2) or the C-type precast beam and slab unit (3); the top of the concrete column (6) is provided with a column extension steel bar (64) extending upward; In the left-right direction, the span between adjacent rows of concrete columns (6) is further divided into a long span area and a short span area; the long span area is located between the two short span areas, and the span of the short span area is similar to the width of the A-type precast beam-slab unit (1); The A-type precast beam-slab unit (1) is arranged in a front-to-back direction and the A-type beam (12) is mounted on the supporting member A (61) of the short span concrete column (6); and the A-type beam (12) mounted on the supporting member A (61) is provided with A-type extended steel bars (13) and A-type shear key grooves (17) at both ends; The A-type precast beam-slab unit (1) is provided with precast composite beams (5) arranged in a left-right direction in front and behind, and the precast composite beams (5) are also erected on the supporting member B (62) of the short span concrete column (6); and the two ends of the precast composite beam (5) are provided with beam extension steel bars (53) and beam end shear key grooves (57); A plurality of supporting grooves (19) are provided on the outer side of the A-shaped beam (12) near the long span area of the A-shaped prefabricated beam-slab unit (1); The long span area is divided into C-type precast beam and slab unit (3) laying and B-type precast beam and slab unit (2) and composite slab (4) mixed laying; The C-shaped precast beam-slab unit (3) is laid in the following manner: the C-shaped precast beam-slab unit (3) is placed in a left-right direction and laid in sequence from front to back in the long span area; wherein, the C-shaped beam (32) in the C-shaped precast beam-slab unit (3) is mounted on the supporting member C (63) and the supporting groove (19) of the concrete column (6) in the long span area; and the C-shaped beam (32) mounted on the supporting member C (63) is provided with C-shaped protruding steel bars (33) and C-shaped shear key grooves (37) at both ends; The mixed laying method of the B-type precast beam-slab unit (2) and the composite slab (4) is as follows: the B-type precast beam-slab unit (2) is placed in a left-right direction and laid at the front and rear ends of the long span area so that the middle of the long span area forms a waiting area for laying; wherein, the half-beam-width B-type beam (22) in the B-type precast beam-slab unit (2) is erected on the supporting member C (63) of the concrete column (6) in the long span area, and the full-beam-width B-type beam (22) is erected on the supporting groove (19); the steel bar portions (41) of the composite slab are erected on the full-beam-width B-type beam (22); wherein, the B-type beam (22) erected on the supporting member C (63) is provided with B-type protruding steel bars (23) and B-type shear key grooves (27) at both ends; A structural surface composed of type A precast beam-slab units (1), type B precast beam-slab units (2), composite slabs (4), precast composite beams (5), concrete columns (6), and a cast-in-place concrete surface layer (7) formed by pouring concrete at the beam-column joints; or A structural surface composed of the A-type precast beam-slab unit (1), the C-type precast beam-slab unit (3), the precast composite beam (5), and the concrete column (6) and a cast-in-place concrete surface layer (7) formed by pouring concrete at the beam-column joint.

2. The beam-slab integrated unit composite frame according to claim 1, characterized in that: An A-shaped groove (14) is provided at the top corner of the A-shaped beam (12) of the A-shaped prefabricated beam-slab unit (1), and an A-shaped stirrup (15) is embedded in the A-shaped beam (12) and extends from the top of the A-shaped beam (12); A B-shaped groove (24) is provided at the top corner of the B-shaped beam (22) of the B-shaped prefabricated beam-slab unit (2), and a B-shaped stirrup (25) is embedded in the B-shaped beam (22) and extends from the top of the B-shaped beam (22); A C-shaped groove (34) is provided at the top corner of the C-shaped beam (32) of the C-shaped prefabricated beam-slab unit (3), and a C-shaped stirrup (35) is embedded in the C-shaped beam (32) and extends from the top of the C-shaped beam (32); Beam stirrups (55) are embedded in the prefabricated composite beam (5), the top of which extends out of the prefabricated composite beam (5).

3. The beam-slab integrated unit composite frame according to claim 1, characterized in that: The A-shaped flat plate (11) is provided with an array of A-shaped truss steel bars (16) perpendicular to the A-shaped beam (12); The B-type flat plate (21) is provided with an array of B-type truss steel bars (26) perpendicular to the B-type beam (22); The C-shaped flat plate (31) is provided with an array of C-shaped truss steel bars (36) perpendicular to the C-shaped beam (32); The composite plate (4) is provided with an array of D-shaped truss steel bars (46) parallel to the steel bar portion (41).

4. A construction method for a beam-slab integrated unit composite frame, characterized by: It includes the following steps: S1. Complete the array construction of the concrete columns (6); wherein, in the left-right direction, the spans between adjacent rows of concrete columns (6) are further divided into long span areas and short span areas; the long span area is located between the two short span areas, and the span of the short span area is similar to the width of the A-type precast beam-slab unit (1); S2. The A-type precast beam-slab unit (1) is hoisted to the short span area and placed in a front-to-back direction to be mounted on the supporting member A (61) of the short span area concrete column (6); S3. The prefabricated composite beam (5) is hoisted to the front and rear sides of the A-type prefabricated beam-slab unit (1) in the short span area, and then erected on the supporting member B (62) of the concrete column (6) in the short span area; S4. Lay several C-shaped precast beam-slab units (3) in the long span area; or Laying B-type precast beam-slab units (2) and a plurality of composite slabs (4) in the long span area; S5. Pour concrete on the basis of S4 to form a cast-in-place concrete surface layer (7).

5. The construction method of the beam-slab integrated unit composite frame according to claim 4, characterized in that: The specific laying methods and conditions of S4 are as follows: When the front and rear spans of the long span area meet the requirements of an integer multiple of the width of the C-shaped precast beam and slab unit (3); hoist the C-shaped precast beam and slab unit (3) and place it in a left-right direction, and then lay it in the long span area in sequence from front to back, so that the C-shaped beam (32) of the C-shaped precast beam and slab unit (3) is erected on the supporting member C (63) and the supporting groove (19) of the concrete column (6) of the long span area; or When the front and rear spans of the long span area do not meet the requirements of an integer multiple of the width of the C-type precast beam-slab unit (3), firstly, two groups of B-type precast beam-slab units (2) are hoisted and placed in the left and right directions, and then respectively laid at the front and rear ends of the long span area so that the middle of the long span area forms a waiting area for laying; wherein, the half-beam-width B-type beam (22) in the B-type precast beam-slab unit (2) is erected on the supporting member C (63) of the concrete column (6) in the long span area, and the full-beam-width B-type beam (22) in the B-type precast beam-slab unit (2) is erected on the supporting groove (19); finally, a plurality of composite slabs (4) are laid in the waiting area for laying, and the steel bar portion (41) of the composite slab (4) is erected on the full-beam-width B-type beam (22).

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