Double-layer or staggered-layer combined frame and construction method thereof

Abstract

The invention discloses a double-layer or staggered-layer combined frame and a construction method thereof. The double-layer or staggered-layer combined frame comprises prefabricated stand columns, a high-layer prefabricated beam plate assembly and a low-layer prefabricated beam plate assembly. The prefabricated stand columns are distributed in an array mode, and at least one of a high-layer bearing assembly and a low-layer bearing assembly is arranged on the prefabricated stand columns. The high-layer bearing assemblies of the adjacent prefabricated stand columns jointly support one high-layer prefabricated beam and slab assembly, and the low-layer bearing assemblies of the adjacent prefabricated stand columns jointly support one low-layer prefabricated beam and slab assembly. The high-layer bearing assemblies and the low-layer bearing assemblies are arranged at the positions of different heights on the prefabricated stand columns, so that the construction operation of the upper layer can be carried out without waiting for pouring forming and complete solidification of one layer in the construction process of a building in a multi-layer combined frame form; and instead, rapid installation and pouring of the prefabricated beam and slab assemblies of the high layer and the low layer can be completed continuously or simultaneously, the construction cost is reduced, and meanwhile the site construction speed of a corresponding multi-layer building is increased.

Description

Technical Field

[0001] The invention relates to the technical field of construction, and in particular to a double-layer or staggered-layer combined frame and a construction method thereof. Background Art

[0002] When existing prefabricated concrete buildings use composite floor slabs and prefabricated composite beams, they usually need to be supported during the construction phase. When the floor height is large, the support system is complex and expensive. Therefore, in order to speed up construction and reduce project measures, it is of great practical value to realize the construction of prefabricated structures without support and mold.

[0003] In order to solve the above problems, a precast concrete structure with integrated beams and slabs is proposed, 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] However, for some specific building structures, such as substations with double-layer or staggered composite frames, if precast concrete structures with integrated beams and slabs are used for construction, two pourings are required, that is, the construction of the second floor needs to wait until the first floor is cast and completely solidified before it can proceed, which affects the on-site construction speed of multi-story buildings. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a double-layer or staggered-layer composite frame and a construction method thereof, which can reduce the construction cost and improve the on-site construction speed of the corresponding multi-layer building.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A double-layer or staggered-layer composite frame, comprising prefabricated columns, high-rise prefabricated beam-slab assemblies, and low-rise prefabricated beam-slab assemblies; The prefabricated columns are distributed in an array, and at least one of a high-rise supporting component and a low-rise supporting component is provided on the prefabricated columns; The high-level supporting components of the adjacent prefabricated columns jointly support one high-level prefabricated beam and slab component, and the low-level supporting components of the adjacent prefabricated columns jointly support one low-level prefabricated beam and slab component.

[0007] In order to solve the above technical problems, another technical solution adopted by the present invention is: A construction method of a double-layer or staggered-layer composite frame, applied to the above-mentioned double-layer or staggered-layer composite frame, comprises the following steps: S1. Arrange all prefabricated columns in an array at the construction site; S2, installing the lower prefabricated beam and slab assembly on the lower supporting assembly of the adjacent prefabricated columns, and then pouring concrete on the lower prefabricated beam and slab assembly to form a lower cast-in-place concrete surface layer; S3, installing the high-rise precast beam and slab components on the high-rise supporting components of the adjacent precast columns, and then pouring concrete on the high-rise precast beam and slab components to form a cast-in-place concrete surface layer of the low-rise and high-rise.

[0008] The beneficial effects of the present invention are: providing a double-layer or staggered-layer composite frame and a construction method thereof, by arranging high-layer supporting components and low-layer supporting components at different heights on prefabricated columns, so that the construction process of a building in the form of a multi-layer composite frame does not need to wait for the first layer to be cast and completely solidified before the construction of the next layer can be carried out, but the rapid installation and casting of the prefabricated beam and slab components of the high and low layers can be completed continuously or simultaneously, thereby reducing the construction cost and improving the on-site construction speed of the corresponding multi-layer building. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of a double-layer or staggered-layer combined frame of the present invention when forming a double-layer structure; Figure 2 It is a structural schematic diagram of a prefabricated base of a double-layer or staggered-layer combined frame of the present invention; Figure 3 It is a structural schematic diagram of a double-layer or staggered-layer composite frame of the present invention, which has prefabricated high columns with high-layer supporting components and low-layer supporting components; Figure 4 It is a structural schematic diagram of a high-rise prefabricated composite beam of a double-layer or staggered-layer composite frame of the present invention; Figure 5 It is a structural schematic diagram of a low-level prefabricated composite beam of a double-layer or staggered-layer composite frame of the present invention; Figure 6 It is a structural schematic diagram of a prefabricated beam-slab unit of a double-layer or staggered-layer composite frame of the present invention; Figure 7 A schematic diagram of the installation of prefabricated columns of a double-layer composite frame in a construction method of a double-layer or staggered-layer composite frame of the present invention; Figure 8 A schematic diagram of the installation of the lower prefabricated composite beams of a double-layer composite frame of a construction method of a double-layer or staggered-layer composite frame of the present invention; Fig. 9 A schematic diagram of the installation of prefabricated beam and slab units of a double-layer composite frame in a construction method of a double-layer or staggered-layer composite frame according to the present invention; Fig.10 A schematic diagram of the pouring effect of the cast-in-place concrete surface layer of a double-layer composite frame at the lower level of a construction method of a double-layer or staggered-layer composite frame of the present invention; Fig.11 A schematic diagram of the installation of high-rise prefabricated composite beams of a double-layer composite frame of a construction method of a double-layer or staggered-layer composite frame of the present invention; Fig.12 A schematic diagram of the installation of prefabricated beam-slab units on high-rise prefabricated composite beams of a double-layer composite frame of a construction method of a double-layer or staggered-layer composite frame of the present invention; Fig.13 A schematic diagram of the pouring effect of a cast-in-place concrete surface layer of a double-layer composite frame at a high level in a construction method of a double-layer or staggered-layer composite frame of the present invention; Fig.14 It is a schematic diagram of the structure of a double-layer or staggered-layer combined frame of the present invention when forming a staggered-layer architecture; Fig.15 It is a structural schematic diagram of a prefabricated short column of a double-layer or staggered-layer combined frame of the present invention; Fig.16 It is a structural schematic diagram of a low-level prefabricated composite beam located on a prefabricated short column in a double-layer or staggered-layer composite frame of the present invention; Fig.17 A schematic diagram of the installation of prefabricated columns of a staggered-layer composite frame in a construction method of a double-layer or staggered-layer composite frame according to the present invention; Fig.18 It is a schematic diagram of the effect after the prefabricated beam and slab units of the construction method of a double-layer or staggered composite frame of the present invention are installed; Fig.19 A schematic diagram of a construction method of a double-layer or staggered-layer composite frame of the present invention for completing the pouring of a cast-in-place concrete surface layer of a staggered-layer composite frame; Fig. 20 It is a schematic diagram of the steps of a construction method of a double-layer or staggered-layer combined frame of the present invention.

[0010] Description of labels: 1. Prefabricated base; 11. Bottom plate; 12. Limiting frame; 2. Prefabricated high columns; 21. High-rise beam supporting parts; 22. High-rise beam and slab supporting parts; 23. Low-rise beam supporting parts; 24. Low-rise beam and slab supporting parts; 25. Outrigger steel bars of the first column; 3. Prefabricated short columns; 31. Auxiliary beam supporting parts; 32. Auxiliary beam plate supporting parts; 33. Second column extended steel bars; 4. High-rise prefabricated composite beams; 41. High-rise beam outriggers; 42. Beam end shear key slots; 43. High-rise support slots; 44. High-rise beam stirrups; 5. Prefabricated composite beams at the lower level; 51. Extension; 52. Support grooves at the lower level; 53. I-beams; 54. Outer reinforcement bars at the lower level beams; 55. Stirrups at the lower level beams; 6. Precast beam and slab unit; 61. Slab; 62. Support beam; 63. Beam and slab extended steel bars; 64. Longitudinal beam stirrups; 65. Truss steel bars; 66. Groove.

[0011] 7. Cast-in-place concrete surface layer. DETAILED DESCRIPTION

[0012] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0013] Please refer to Figures 1 to 19 , a double-layer or staggered-layer composite frame, including precast columns, high-rise precast beam-slab assemblies, and low-rise precast beam-slab assemblies; The prefabricated columns are distributed in an array, and at least one of a high-rise supporting component and a low-rise supporting component is provided on the prefabricated columns; The high-level supporting components of the adjacent prefabricated columns jointly support one high-level prefabricated beam and slab component, and the low-level supporting components of the adjacent prefabricated columns jointly support one low-level prefabricated beam and slab component.

[0014] From the above description, it can be seen that the beneficial effect of the present invention is that by arranging high-level supporting components and low-level supporting components at different heights on prefabricated columns, the construction process of a multi-layer composite frame building does not need to wait for one layer to be cast and completely solidified before proceeding to the construction of the next layer, but can continuously or simultaneously complete the rapid installation and casting of the prefabricated beam and slab components of the high and low layers, thereby reducing construction costs and improving the on-site construction speed of the corresponding multi-layer building.

[0015] Further, the prefabricated columns having and only having the low-level supporting components are prefabricated short columns 3, and the prefabricated columns having both the high-level supporting components and the low-level supporting components are prefabricated high columns 2; The lower-level supporting assembly is located on the top of the prefabricated short column 3 , and the lower-level supporting assembly of the prefabricated short column 3 and the lower-level supporting assembly of the prefabricated tall column 2 jointly support a lower-level prefabricated beam-slab assembly.

[0016] From the above description, it can be seen that in some multi-story composite frame buildings, for the staggered composite frames, prefabricated short columns 3 with only low-level supporting components are respectively arranged, so that they are matched with prefabricated columns with both high-level supporting components and low-level supporting components as prefabricated high columns 2. The low-level supporting components of the prefabricated short columns 3 and the low-level supporting components of the preset high columns are used to install the low-level prefabricated beam-slab components, while the high-level supporting components of multiple preset high columns are used to install the high-level prefabricated beam-slab components, which helps to efficiently complete the construction of the staggered composite frame.

[0017] Further, the high-rise prefabricated beam-slab assembly comprises a high-rise prefabricated composite beam 4 and a prefabricated beam-slab unit 6; The high-rise prefabricated composite beam 4 is erected on the high-rise supporting assembly of the adjacent prefabricated column; The prefabricated beam-slab unit 6 is simultaneously erected on the two mutually parallel high-rise prefabricated composite beams 4 and the high-rise supporting components of the adjacent prefabricated columns.

[0018] Further, the lower-level prefabricated beam-slab assembly comprises a lower-level prefabricated composite beam 5 and a prefabricated beam-slab unit 6; Both ends of the lower prefabricated composite beam 5 are mounted on the lower supporting components of the adjacent prefabricated columns; The prefabricated beam-slab unit 6 is simultaneously erected on two mutually parallel lower-level prefabricated composite beams 5 and the lower-level supporting components of the adjacent prefabricated columns.

[0019] From the above description, it can be seen that the high-rise prefabricated beam-slab assembly is composed of a high-rise prefabricated composite beam 4 and a prefabricated beam-slab unit 6. During installation, two parallel high-rise prefabricated composite beams 4 are first erected on prefabricated columns, and then the prefabricated beam-slab unit 6 is laid on the high-rise prefabricated composite beams 4. The low-rise prefabricated beam-slab assembly is the same. Both use a construction method of prefabrication in advance and on-site assembly, which greatly improves work efficiency.

[0020] Further, the lower support assembly includes a lower beam support member 23 and a lower beam slab support member 24; At least one of the two opposite sides of the prefabricated column is provided with the low-level beam supporting member 23, and both ends of the low-level prefabricated composite beam 5 are respectively mounted on the low-level beam supporting member 23 of the adjacent prefabricated column; The lower beam and slab supporting member 24 is arranged on one side of the prefabricated column adjacent to the lower beam supporting member 23 , and the lower beam and slab supporting member 24 corresponds to the prefabricated beam and slab unit 6 .

[0021] Further, the high-rise supporting assembly includes a high-rise beam supporting member 21 and a high-rise beam slab supporting member 22; At least one of the two opposite sides of the prefabricated column is provided with the high-rise beam supporting member 21, and both ends of the high-rise prefabricated composite beam 4 are respectively mounted on the high-rise beam supporting member 21 of the adjacent prefabricated column; The high-rise beam and slab supporting member 22 is arranged on one side of the prefabricated column adjacent to the high-rise beam and slab supporting member 21 , and the high-rise beam and slab supporting member 22 corresponds to the prefabricated beam and slab unit 6 .

[0022] From the above description, it can be seen that the structures of the high-rise supporting assemblies and the low-rise supporting assemblies are the same, both of which are composed of beam supporting parts and beam-slab supporting parts. The structures correspond to the composition of the beam-slab assemblies to ensure the supporting strength. In terms of usage, they are adapted to the process of first installing prefabricated composite beams on the beam-slab assemblies and then installing prefabricated beam-slab units 6, which provides a supporting foundation while helping to achieve rapid positioning and installation of the beam-slab assemblies.

[0023] Furthermore, it also includes a first column extending steel bar 25; The high-rise supporting assembly is arranged on the top side of the prefabricated column, and the first column outwardly extending steel bar 25 is located on the top of the prefabricated high column 2; Both ends of the high-rise prefabricated composite beam 4 are provided with high-rise beam outriggers 41 and beam end shear keyways 42 . The high-rise beam outriggers 41 correspond to the first column outriggers 25 one by one and are staggered with each other.

[0024] From the above description, it can be seen that the first column protruding steel bar 25 is arranged at the top of the precast column, which cooperates with the high-rise beam protruding steel bars 41 provided at both ends of the high-rise precast composite beam 4, and the connection between the precast column and the high-rise precast composite beam 4 is realized by concrete pouring; at the same time, the shear key groove 42 is arranged at the beam end to improve stability.

[0025] Furthermore, the lower prefabricated composite beam 5 located on the prefabricated high column 2 is embedded with an I-beam 53 and lower beam stirrups 55, and the I-beam 53 has extensions 51 at both ends of the lower prefabricated composite beam 5; The two ends of the lower prefabricated composite beam 5 located on the prefabricated short column 3 are respectively provided with a lower beam protruding steel bar 54 and the extension portion 51, and the top of the prefabricated short column 3 is provided with a second column protruding steel bar 33, and the lower beam protruding steel bar 54 and the second column protruding steel bar 33 are staggered with each other.

[0026] From the above description, it can be seen that the lower prefabricated composite beam 5 located on the prefabricated high column 2 is embedded with I-beams 53 and lower beam stirrups 55 to ensure the supporting strength and deformation resistance of the lower prefabricated composite beam 5.

[0027] Further, the prefabricated beam-slab unit 6 comprises a flat plate 61 and support beams 62 arranged on two opposite sides of the flat plate 61; The flat plate 61 is provided with truss steel bars 65 perpendicular to the support beam 62 in array, at least two flat plates 61 are laid between the high-rise prefabricated composite beams 4 which are parallel to each other, and the high-rise prefabricated composite beams 4 are provided with high-rise supporting grooves 43; The support beam 62 is correspondingly mounted on the high-rise supporting groove 43 or the high-rise supporting assembly; The two ends of the support beam 62 corresponding to the high-rise supporting assembly are provided with beam and slab extended steel bars 63, and the beam and slab extended steel bars 63 penetrate into the area where the first column extended steel bars 25 are located.

[0028] From the above description, it can be seen that the prefabricated beam and slab unit 6 is composed of a flat plate 61, a truss steel bar 65 and a support beam 62. The single-body support strength is high. At the same time, a splicing design of laying multiple flat plates 61 is adopted between the high-rise prefabricated composite beams 4 to reduce the difficulty of on-site construction and installation. It can also cooperate closely with the prefabricated columns and high-rise supporting grooves 43 with the help of support beams 62, beam and slab protruding steel bars 63, etc., to improve the compactness of assembly and overall stability.

[0029] Please refer to Figures 7 to 13 as well as Figures 17 to 20 A construction method of a double-layer or staggered-layer composite frame is applied to the above-mentioned double-layer or staggered-layer composite frame, comprising the following steps: S1. Arrange all prefabricated columns in an array at the construction site; S2, installing the lower prefabricated beam and slab assembly on the lower supporting assembly of the adjacent prefabricated columns, and then pouring concrete on the lower prefabricated beam and slab assembly to form a lower cast-in-place concrete surface layer 7; S3, installing the high-rise prefabricated beam and slab components on the high-rise supporting components of the adjacent prefabricated columns, and then pouring concrete on the high-rise prefabricated beam and slab components to form a cast-in-place concrete surface layer 7 of the low-rise and high-rise floors.

[0030] From the above description, it can be seen that the beneficial effect of the present invention is that by arranging high-level supporting components and low-level supporting components at different heights on prefabricated columns, the construction process of a multi-layer composite frame building does not need to wait for one layer to be cast and completely solidified before proceeding to the construction of the next layer, but can continuously or simultaneously complete the rapid installation and casting of the prefabricated beam and slab components of the high and low layers, thereby reducing construction costs and improving the on-site construction speed of the corresponding multi-layer building.

[0031] Please refer to Figures 1 to 19 , Embodiment 1 of the present invention is: A double-layer or staggered composite frame, comprising prefabricated columns, high-rise prefabricated beam-slab components and low-rise prefabricated beam-slab components; the prefabricated columns are arranged in an array, and at least one of high-rise supporting components and low-rise supporting components is provided on the prefabricated columns; the high-rise supporting components of adjacent prefabricated columns jointly support a high-rise prefabricated beam-slab component, and the low-rise supporting components of adjacent prefabricated columns jointly support a low-rise prefabricated beam-slab component. Figure 2 As shown, a prefabricated base 1 is provided at the bottom of each prefabricated column. The prefabricated base 1 includes a bottom plate 11 and a limiting frame 12 arranged on the bottom plate 11; the limiting frame 12 is adapted to the prefabricated column.

[0032] In this embodiment, combined with Figure 3 and Fig.15 As shown, due to the difference in height and surface structure, the prefabricated pillars are divided into two types; the prefabricated pillars with and only the low-level supporting components are prefabricated low pillars 3, and the prefabricated pillars with both high-level supporting components and low-level supporting components are prefabricated high pillars 2; the high-level supporting components are arranged on the top side of the prefabricated high pillars 2, and the low-level supporting components of the prefabricated high pillars 2 are located on the column body in the middle of the pillars; Combination Figure 1 As shown, when arranged in an array, the high-rise supporting components of adjacent prefabricated high columns 2 jointly support a high-rise prefabricated beam and slab component, and the low-rise supporting components jointly support a low-rise prefabricated beam and slab component; thus, a double-layer building is formed; it should be noted that, according to actual construction requirements, two or more low-rise supporting components can be distributed up and down on the prefabricated high columns 2 to form a multi-layer composite frame.

[0033] Combination Fig.14 As shown, the lower-level supporting assembly is located on the top of the prefabricated short columns 3. When arranged in an array, the prefabricated high columns 2 are adjacent to the prefabricated short columns 3. The lower-level supporting assembly of the prefabricated short columns 3 and the lower-level supporting assembly of the prefabricated high columns 2 are in the same horizontal plane, and they jointly support a lower-level prefabricated beam-slab assembly, thereby forming a staggered combined frame with the high-level prefabricated beam-slab assembly on the prefabricated high columns 2.

[0034] Among them, Figure 4 and Figure 5 As shown, the high-rise prefabricated beam-slab assembly includes a high-rise prefabricated composite beam 4 and a prefabricated beam-slab unit 6; the high-rise prefabricated composite beam 4 is mounted on the high-rise supporting assembly of the adjacent prefabricated column; the prefabricated beam-slab unit 6 is simultaneously mounted on two mutually parallel high-rise prefabricated composite beams 4 and the high-rise supporting assembly of the adjacent prefabricated column. The low-rise prefabricated beam-slab assembly includes a low-rise prefabricated composite beam 5 and a prefabricated beam-slab unit 6; both ends of the low-rise prefabricated composite beam 5 are mounted on the low-rise supporting assembly of the adjacent prefabricated column; the prefabricated beam-slab unit 6 is simultaneously mounted on two mutually parallel low-rise prefabricated composite beams 5 and the low-rise supporting assembly of the adjacent prefabricated column.

[0035] In this embodiment, if Figure 3 As shown, the low-level supporting assembly includes a low-level beam supporting member 23 and a low-level beam-slab supporting member 24; a low-level beam supporting member 23 is provided on at least one of the two opposite sides of the prefabricated column, and both ends of the low-level prefabricated composite beam 5 are respectively mounted on the low-level beam supporting member 23 of the adjacent prefabricated column; the low-level beam-slab supporting member 24 is arranged on one side of the prefabricated column adjacent to the low-level beam supporting member 23, and the low-level beam-slab supporting member 24 corresponds to the prefabricated beam-slab unit 6.

[0036] In the dislocation combination framework, Fig.15As shown, in order to distinguish the low-level supporting assembly located at the prefabricated low column from the low-level supporting assembly located at the prefabricated high column 2, the low-level supporting assembly located at the prefabricated low column is identified as including a sub-beam supporting member 31 and a sub-beam plate supporting member 32; the sub-beam supporting member 31 and the low-level beam supporting member 23 jointly support a low-level prefabricated composite beam 5, while the sub-beam plate supporting member 32 and the low-level beam plate supporting member 24 jointly support the prefabricated beam plate unit 6 located on the low-level prefabricated composite beam 5.

[0037] At the same time, similarly, Figure 3 As shown, the high-rise supporting assembly includes a high-rise beam supporting member 21 and a high-rise beam-slab supporting member 22; a high-rise beam supporting member 21 is provided on at least one of the two opposite sides of the prefabricated column, and both ends of the high-rise prefabricated composite beam 4 are respectively mounted on the high-rise beam supporting member 21 of the adjacent prefabricated column; the high-rise beam-slab supporting member 22 is arranged on one side of the prefabricated column adjacent to the high-rise beam supporting member 21, and the high-rise beam-slab supporting member 22 corresponds to the prefabricated beam-slab unit 6.

[0038] Please refer to Figure 3 , Figure 4 , Figure 6 , Fig.15 as well as Fig.16 , Embodiment 2 of the present invention is: A double-layer or staggered-layer composite frame, based on the above-mentioned embodiment 1, further includes a first column protruding steel bar 25 and a second column protruding steel bar 33; a high-rise supporting assembly is arranged on the top side of the prefabricated column, and the first column protruding steel bar 25 is located on the top of the prefabricated high column 2; high-rise beam protruding steel bars 41 and beam end shear key grooves 42 are provided at both ends of the high-rise prefabricated composite beam 4, and the high-rise beam protruding steel bars 41 correspond to the first column protruding steel bars 25 one by one and are staggered with each other; high-rise beam stirrups 44 are provided on the high-rise prefabricated composite beam 4.

[0039] The low-level prefabricated composite beam 5 located on the prefabricated high column 2 is embedded with an I-beam 53 and low-level beam stirrups 55, and the I-beam 53 has extensions 51 at both ends of the low-level prefabricated composite beam 5; the two ends of the low-level prefabricated composite beam 5 located on the prefabricated short column 3 are respectively provided with a low-level beam protruding steel bar 54 and an extension 51, and the top of the prefabricated short column 3 is provided with a second column protruding steel bar 33, and the low-level beam protruding steel bar 54 and the second column protruding steel bar 33 are staggered with each other.

[0040] Please refer to Figure 5 , Embodiment 3 of the present invention is: A double-layer or staggered-layer composite frame, based on the above-mentioned embodiment 2, the prefabricated beam-slab unit 6 includes a flat plate 61 and support beams 62 arranged on opposite sides of the flat plate 61, and the support beams 62 are provided with longitudinal beam stirrups 64; the flat plate 61 is arrayed with truss steel bars 65 perpendicular to the support beams 62, at least two flat plates 61 are laid between the high-rise prefabricated composite beams 4 parallel to each other, and the high-rise prefabricated composite beams 4 are provided with high-rise supporting grooves 43; the support beams 62 are correspondingly erected on the high-rise supporting grooves 43 or high-rise supporting components; beam-slab extended steel bars 63 are provided at both ends of the support beams 62 corresponding to the high-rise supporting components, and the beam-slab extended steel bars 63 penetrate into the area where the first column extended steel bars 25 are located, and grooves 66 are opened at the top corners of the support beams 62.

[0041] Please refer to Figures 1 to 13 as well as Figures 17 to 20 , Embodiment 4 of the present invention is: A construction method of a double-layer or staggered-layer combined frame, applied to a double-layer or staggered-layer combined frame of any one of embodiments 1 to 3, comprises the following steps: S1. Arrange all prefabricated columns in an array at the construction site; In this embodiment, if Figure 7 and Fig.17 As shown, the prefabricated base 1 is first arranged on site, and then the prefabricated columns are installed one by one on the prefabricated base 1; the number of prefabricated high columns 2 and the number of prefabricated low columns selected for the prefabricated columns need to be determined according to the drawings of the combined frame actually constructed, for example: If it is a double-layer composite frame, then prefabricated high columns 2 are laid, and according to the layout requirements of the low-level prefabricated beam and slab components, it is ensured that at least part of the prefabricated high columns 2 are equipped with low-level supporting components; If it is a staggered combined frame, one row of prefabricated short columns 3 and two rows of prefabricated tall columns 2 are laid, the prefabricated tall columns 2 correspond to the prefabricated short columns 3 one by one, and both are provided with low-level supporting components.

[0042] S2, installing the lower prefabricated beam and slab assembly on the lower supporting assembly of the adjacent prefabricated columns, and then pouring concrete on the lower prefabricated beam and slab assembly to form a lower cast-in-place concrete surface layer 7; In a two-layer composite framework, such as Figure 8 As shown, the extensions 51 at both ends of the lower prefabricated composite beam 5 are placed on the lower beam support members 23 of two adjacent prefabricated high columns 2 on the left and right respectively; In the staggered composite frame, as shown in the figure, the extension portion 51 of the lower prefabricated composite beam 5 is placed on the lower beam support member 23 of the prefabricated high column 2, and the other end of the lower prefabricated composite beam 5 is placed on the secondary beam support member 31 of the prefabricated short column 3; wherein the lower beam overhanging steel bar 54 of the lower prefabricated composite beam 5 extends into the area where the second column overhanging steel bar 33 is located; Then, in the two-layer composite framework, Fig. 9 As shown, the support beam 62 of the prefabricated beam-slab unit 6 is erected on the lower support groove 52 of the lower prefabricated composite beam 5 and the lower beam-slab support member 24; In the split-level composite framework, Fig.18 As shown, the support beam 62 of the prefabricated beam-slab unit 6 is erected on the lower support groove 52, the secondary beam support member 31 and the secondary beam-slab support member 32 of the lower prefabricated composite beam 5, wherein the beam-slab extended steel bars 63 of the support beam 62 extend into the area where the second column extended steel bars 33 are located; S3, installing the high-rise prefabricated beam and slab components on the high-rise supporting components of the adjacent prefabricated columns, and then pouring concrete on the high-rise prefabricated beam and slab components to form a cast-in-place concrete surface layer 7 of the low-rise and high-rise floors.

[0043] In a two-layer composite framework, such as Fig.11 As shown, the high-rise prefabricated composite beam 4 is placed on the high-rise beam supporting members 21 of the two adjacent prefabricated high columns 2 on the left and right, and the high-rise beam outriggers 41 of the high-rise prefabricated composite beam 4 extend into the area where the outriggers 25 of the first column are located; In the split-level composite framework, Fig.18 As shown, the high-rise prefabricated composite beam 4 is placed on the high-rise beam supporting members 21 of the two adjacent prefabricated high columns 2 on the left and right, and the high-rise beam outriggers 41 of the high-rise prefabricated composite beam 4 extend into the area where the outriggers 25 of the first column are located; Then, in the two-layer composite framework, Fig.12 As shown, the support beam 62 of the prefabricated beam-slab unit 6 is erected on the high-rise supporting groove 43 of the high-rise prefabricated composite beam 4 and the high-rise beam-slab supporting member 22; wherein the beam-slab outrigger steel bars 63 of the support beam 62 extend into the area where the first column outrigger steel bars 25 are located; In the split-level composite framework, Fig.18 As shown, the support beam 62 of the prefabricated beam-slab unit 6 is erected on the high-rise supporting groove 43 of the high-rise prefabricated composite beam 4 and the high-rise beam-slab supporting member 22; wherein the beam-slab protruding steel bars 63 of the support beam 62 extend into the area where the first column protruding steel bars 25 are located.

[0044] In summary, the present invention provides a double-layer or staggered-layer composite frame and a construction method thereof. By arranging high-layer supporting components and low-layer supporting components at different heights on prefabricated columns, the construction process of a multi-layer composite frame building does not need to wait for the first layer to be cast and completely solidified before proceeding with the construction of the next layer. Instead, the rapid installation and casting of the prefabricated beam and slab components of the high and low layers can be completed continuously or simultaneously, thereby reducing construction costs and improving the on-site construction speed of the corresponding multi-layer building.

[0045] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A double-layer or staggered-layer composite frame, characterized in that: It includes precast columns, high-rise precast beam and slab assemblies, and low-rise precast beam and slab assemblies; The prefabricated columns are distributed in an array, and at least one of a high-rise supporting component and a low-rise supporting component is provided on the prefabricated columns; The high-level supporting components of the adjacent prefabricated columns jointly support one high-level prefabricated beam and slab component, and the low-level supporting components of the adjacent prefabricated columns jointly support one low-level prefabricated beam and slab component.

2. A double-layer or staggered-layer composite frame according to claim 1, characterized in that: The prefabricated columns with and only with the lower-level supporting components are prefabricated short columns, and the prefabricated columns with both the higher-level supporting components and the lower-level supporting components are prefabricated tall columns; The lower-level supporting assembly is located on the top of the prefabricated short columns, and the lower-level supporting assembly of the prefabricated short columns and the lower-level supporting assembly of the prefabricated tall columns jointly support a lower-level prefabricated beam-slab assembly.

3. A double-layer or staggered-layer composite frame according to claim 2, characterized in that: The high-rise prefabricated beam-slab assembly comprises a high-rise prefabricated composite beam and a prefabricated beam-slab unit; The high-rise prefabricated composite beam is erected on the high-rise supporting assembly of the adjacent prefabricated column; The prefabricated beam-slab unit is simultaneously erected on the two mutually parallel high-rise prefabricated composite beams and the high-rise supporting components of the adjacent prefabricated columns.

4. A double-layer or staggered-layer composite frame according to claim 3, characterized in that: The low-rise prefabricated beam-slab assembly comprises a low-rise prefabricated composite beam and a prefabricated beam-slab unit; Both ends of the lower prefabricated composite beam are mounted on the lower supporting components of the adjacent prefabricated columns; The prefabricated beam-slab unit is simultaneously erected on two mutually parallel lower-level prefabricated composite beams and the lower-level supporting components of the adjacent prefabricated columns.

5. A double-layer or staggered-layer composite frame according to claim 4, characterized in that: The lower-level support assembly includes a lower-level beam support member and a lower-level beam-slab support member; At least one of the two opposite sides of the prefabricated column is provided with the low-level beam supporting member, and both ends of the low-level prefabricated composite beam are respectively mounted on the low-level beam supporting members of the adjacent prefabricated column; The lower beam and slab supporting member is arranged on one side of the prefabricated column adjacent to the lower beam supporting member, and the lower beam and slab supporting member corresponds to the prefabricated beam and slab unit.

6. A double-layer or staggered-layer composite frame according to claim 3, characterized in that: The high-rise supporting assembly includes a high-rise beam supporting member and a high-rise beam and slab supporting member; At least one of the two opposite sides of the prefabricated column is provided with the high-rise beam supporting member, and both ends of the high-rise prefabricated composite beam are respectively mounted on the high-rise beam supporting members of the adjacent prefabricated column; The high-rise beam and slab supporting member is arranged on one side of the prefabricated column adjacent to the high-rise beam and slab supporting member, and the high-rise beam and slab supporting member corresponds to the prefabricated beam and slab unit.

7. A double-layer or staggered-layer composite frame according to claim 3, characterized in that: It also includes a first column outrigger reinforcement; The high-rise supporting assembly is arranged on the top side of the prefabricated column, and the first column outwardly extending steel bar is located on the top of the prefabricated high column; Both ends of the high-rise prefabricated composite beam are provided with high-rise beam protruding steel bars and beam end shear key grooves. The high-rise beam protruding steel bars correspond to the first column protruding steel bars one by one and are staggered with each other.

8. A double-layer or staggered-layer composite frame according to claim 5, characterized in that: The lower prefabricated composite beam located on the prefabricated high column is embedded with an I-beam and lower beam stirrups, and the I-beam has extensions at both ends of the lower prefabricated composite beam; The two ends of the lower prefabricated composite beam located on the prefabricated short column are respectively provided with lower beam protruding steel bars and the extension part, the top of the prefabricated short column is provided with a second column protruding steel bar, and the lower beam protruding steel bar and the second column protruding steel bar are staggered with each other.

9. A double-layer or staggered-layer composite frame according to claim 7, characterized in that: The prefabricated beam-slab unit comprises a flat plate and support beams arranged on two opposite sides of the flat plate; The flat plate is arrayed with truss steel bars perpendicular to the support beams, at least two flat plates are laid between the high-rise prefabricated composite beams parallel to each other, and the high-rise prefabricated composite beams are provided with high-rise supporting grooves; The support beam is correspondingly mounted on the high-rise supporting groove or the high-rise supporting assembly; Beam and slab outrigger steel bars are provided at both ends of the support beam corresponding to the high-rise supporting assembly, and the beam and slab outrigger steel bars penetrate into the area where the first column outrigger steel bars are located.

10. A construction method for a double-layer or staggered-layer composite frame, applied to a double-layer or staggered-layer composite frame according to any one of claims 1 to 9, characterized in that: The steps include: S1. Arrange all prefabricated columns in an array at the construction site; S2, installing the lower prefabricated beam and slab assembly on the lower supporting assembly of the adjacent prefabricated columns, and then pouring concrete on the lower prefabricated beam and slab assembly to form a lower cast-in-place concrete surface layer; S3, installing the high-rise precast beam and slab components on the high-rise supporting components of the adjacent precast columns, and then pouring concrete on the high-rise precast beam and slab components to form a cast-in-place concrete surface layer of the low-rise and high-rise.

Images