Supporting unit and system suitable for fabricated concrete frame structure construction

Abstract

The present invention relates to the technical field of prefabricated building construction, and particularly disclosed thereby a supporting unit and system suitable for construction of prefabricated concrete frame structure, the supporting unit comprises a plurality of groups of below-beam supporting units connected sequentially to form a cavity, and an under-composite slab supporting unit located in the cavity and connected to the plurality of groups of below-beam supporting units; and the under-composite slab supporting unit comprises an under-slab supporting assembly, two groups of composite slab back-ridge systems installed on the under-slab supporting assembly, and a slab-band back ridge system connected to the two groups of composite slab back-ridge systems and located therebetween. According to the present invention, the connection between adjacent vertical rods is achieved through a horizontal rod, and the connection between the vertical rod and an adjacent upright rod is achieved through a horizontal linkage rod, thus forming a supporting and bearing system. The existence of a large space at bottoms of the below-beam supporting unit and a composite slab supporting unit is convenient for interlacing construction or safety inspection and provides a convenient space; and support for a composite slab and a slab-band formwork is effectively implemented.

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of prefabricated building construction, in particular to a supporting unit and system suitable for construction of prefabricated concrete frame structure.BACKGROUND

[0002] As a building type promoting the industrialized, intelligent and green transformation of building construction, prefabricated buildings have developed rapidly in recent years with the support of national and local policies. However, the prefabricated buildings built in conventional way result in a great waste of resources and rising costs.

[0003] Taking the prefabricated concrete formwork supporting unit as an example, a prefabricated member intrinsically has high bearing capacity and rigidity, but regarding the supporting unit, many projects still use all-round scaffolds and wall-to-wall timber formworks as the supporting units in the prefabricated structures, leading to the fact that the measures for the prefabricated structure are not reduced from the conventional structure, and the interlacing construction is quite difficult.

[0004] In recent years, aluminum formwork supporting unit has been applied in many projects and has played a significant role in construction quality and efficiency, particularly, the idea of standardization and modulization has greatly improved the turnover rate of aluminum formwork. However, project-specific formwork designs are required and the aluminum formwork members need to be turned over at a high frequency to have an edge over the timber formwork in cost competition. In addition, the aluminum formwork featured by high precision lacks sufficient adjustment tolerance, often leading to position conflict with civil structural construction.

[0005] As the prefabricated structure rapidly advances, independent support has been expanded and applied as a new form of support, but it has not been effectively popularized due to relatively poor stability.SUMMARY

[0006] The technical problem to be solved by the present invention is to provide a supporting unit and system suitable for construction of prefabricated concrete frame structure.

[0007] The technical solutions adopted by the present invention to solve the technical problem are: in one aspect, the present invention discloses a supporting unit suitable for construction of prefabricated concrete frame structure, which comprises a plurality of groups of below-beam supporting units connected sequentially to form a cavity, and an under-composite slab supporting unit located in the cavity and connected to the plurality of groups of below-beam supporting units; the under-composite slab supporting unit comprises an under-slab supporting assembly, two groups of composite slab back-ridge systems installed on the under-slab supporting assembly, and a slab-band back ridge system connected to the two groups of composite slab back-ridge systems and located therebetween; and top faces of the composite slab back-ridge systems and a top face of the slab-band back ridge system are on the same plane.

[0008] In some possible implementations, the slab-band back ridge system comprises a plurality of groups of parallel slab-band back ridges with two ends connected to the two groups of composite slab back-ridge systems, a formwork back ridge assembly for connecting two adjacent groups of the slab-band back ridges, and a plurality of groups of cushion blocks installed on the slab-band back ridges and sliding along a long direction of the slab-band back ridges; top faces of the cushion blocks and top faces of the slab-band back ridges are on the same plane; and the slab-band back ridges are connected to the under-slab supporting assembly.

[0009] In some possible implementations, the slab-band back ridge is configured with a formwork installation groove, a slideway is configured along a length direction of the slab-band back ridge, and the cushion blocks are located in the formwork installation groove and in slidable fitting with the slideway.

[0010] In some possible implementations, the composite slab back-ridge system comprises a plurality of groups of slab sub-back ridges connected to ends of the slab-band back ridges and arranged in one-to-one correspondence with the slab-band back ridges, and a slab main back ridge provided in parallel with the formwork back ridge assembly and located between two adjacent groups of the slab sub-back ridges; at least two groups of slab main back ridges are arranged between two adjacent groups of the slab sub-back ridges, with two ends connected to the slab sub-back ridges; and the slab main back ridge closer to the slab-band back ridge, the slab sub-back ridge and the slab-band back ridge are connected by use of a connector A, and one end of the slab sub-back ridge that is farther away from the slab-band back ridge is connected to the slab main back ridge farther away from the slab-band back ridge by use of a connector A.

[0011] In some possible implementations, the under-slab supporting assembly comprises a plurality of groups of vertical rods and a connecting rod assembly for connecting two adjacent groups of the vertical rods; and the plurality of groups of vertical rods are arranged in one-to-one correspondence with the connectors A and are connected to bottoms of the connectors A.

[0012] In some possible implementations, a cantilever part is provided on the connector A closer to the below-beam supporting unit.

[0013] In some possible implementations, the connector A comprises a connecting base A having a cross structure as well as an insertion tube A connected to a bottom of the connecting base A and the vertical rod, and a C-shaped slot with a downward opening is configured on the connecting base A.

[0014] In some possible implementations, the connecting rod assembly comprises an edge constrained triangular support located outside the under-slab supporting assembly and used for connecting the adjacent vertical rods outside, and a horizontal rod located inside the under-slab supporting assembly and used for connecting the adjacent vertical rods inside.

[0015] In some possible implementations, the edge constrained triangular support comprises a horizontal connecting rod horizontally disposed and used for connecting two adjacent groups of the vertical rods, two groups of inclined struts hinged with two ends of the horizontal connecting rod, and a back ridge connecting plate horizontally disposed and hinged with one end of each of the two groups of inclined struts which is farther away from the horizontal connecting rod; the horizontal connecting rod, the inclined strut and the horizontal rod are individually adjustable in their axial lengths and have the same structure; the horizontal connecting rod comprises a sleeve and two groups of lead screws in screw connection with two ends of the sleeve; and threads of the two groups of lead screws rotate in opposite directions.

[0016] In some possible implementations, the below-beam supporting unit comprises an underbeam supporting assembly connected to the under-slab supporting assembly through a horizontal linkage rod and a beam back-ridge system installed on an underbeam supporting assembly.

[0017] In some possible implementations, the beam back-ridge system comprises two groups of beam main back ridges arranged in parallel with the slab main back ridge or the slab sub-back ridge and located on the same horizontal plane, a beam sub-back ridge for connecting the two groups of beam main back ridges and a connector B for connecting the beam main back ridge and the underbeam supporting assembly.

[0018] In some possible implementations, the underbeam supporting assembly comprises an upright rod connected to the connector B and disposed vertically; two adjacent ones of the upright rods are connected through the horizontal linkage rod; and the upright rod and the adjacent vertical rod are connected through the horizontal linkage rod.

[0019] In some possible implementations, the connector B has an I-shaped structure and comprises a connecting base B and an insertion tube B installed on a bottom of the connecting base B. the connecting base B comprises two groups of clamping plates connected to ends of the beam main back ridges and arranged in parallel, and a connecting plate for connecting the two groups of clamping plates; and a C-shaped slot B with a downward opening is configured on the clamping plate.

[0020] In another aspect, a supporting system suitable for construction of prefabricated concrete frame structure, which comprises a plurality of groups of above-mentioned supporting units, and two adjacent groups of the supporting units share the same group of below-beam supporting unit.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: According to the present invention, the connection between adjacent vertical rods is achieved through a horizontal rod, and the connection between the vertical rod and an adjacent upright rod is achieved through a horizontal linkage rod, thus forming a supporting and bearing system. The existence of a large space at bottoms of the below-beam supporting unit and a composite slab supporting unit is convenient for interlacing construction or safety inspection and provides a convenient space.

[0022] The present invention provides an arrangement of the under-slab supporting assembly to support the composite slab back-ridge system and the slab-band back ridge system; the slab-band back ridge system is provided with the cushion blocks fitting the composite slab back-ridge system to support composite slabs, thereby supporting the composite slabs with different specifications and sizes by sliding the cushion blocks; additionally, the location of the slab-band formwork is achieved. It effectively solves the problem of formwork erection caused by different elevations between a bottom of the composite slab and that of the slab-band formwork in the prior art, and avoids the problem of wall-to-wall formwork adopted for uniform stress on the back ridge, or the division of a whole unit due to the slab-band location.

[0023] The present invention is suitable for timber formwork supports, where the upright rods and the horizontal rods are in conventionally common rod forms, and has obvious advantages in cost and adaptability adjustment to room size compared with aluminum formwork.

[0024] The present invention is simple in structure and practical in use; and directly laying the composite slab on the composite slab back-ridge system reduces the usage amount of the formwork and cuts the construction cost.BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 is a structural diagram of a supporting unit of the present invention; Fig. 2 is a structural diagram of an under-composite slab supporting unit of the present invention; Fig. 3 is a schematic side view of the under-composite slab supporting unit of the present invention; Fig. 4 is a structural diagram of a slab-band back ridge system of the present invention; Fig. 5 is a structural diagram of a slab-band back ridge, a fixed plate and a cushion block of the present invention; Fig. 6 is a structural diagram of the slab-band back ridge, a slideway, the fixed plate and the cushion block of the present invention; Fig. 7 is a structural diagram of an edge constrained triangular support of the present invention; Fig. 8 is a schematic diagram of a connection relationship between an below-beam supporting unit, an upright rod and a horizontal linkage rod of the present invention; Fig. 9 is a schematic diagram of a connection relationship between a connector B, a beam main back ridge and a beam sub-back ridge of the present invention; Fig. 10 is one structural diagram of the connector B of the present invention; Fig. 11 is another structural diagram of the connector B of the present invention; Fig. 12 is a structural diagram of the connector A of the present invention; Fig. 13 is a structural diagram of a supporting system of the present invention; and Fig. 14 is a plan view of the supporting system of the present invention;

[0026] Callouts: 1-below-beam supporting unit, 11-underbeam supporting assembly, 111-upright rod, 112-horizontal linkage rod, 12-beam back-ridge system, 121-beam main back ridge, 122-beam sub-back ridge, 123-connector B, 1231-connecting base B, 1232-insertion tube B, 2-under-composite slab supporting unit, 21-under-slab supporting assembly, 211-vertical rod, 212-connecting rod assembly, 2121-edge constrained triangular support, 21211-horizontal connecting rod, 21212-inclined strut, 21213-back ridge connecting plate, 22-slab-band back ridge system, 221-slab-band back ridge, 2211-slideway, 2212-fixed plate, 222-formwork back ridge assembly, 223-cushion block, 23-composite slab back-ridge system, 231-slab sub-back ridge, 232-slab main back ridge, 24-connector A, 241-connecting base A, 242-insertion tube A, 25-cantilever part.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In the present invention, unless otherwise specified and defined explicitly, the terms "installation", "linking", "connection" and "fixing" shall be comprehend in a broad sense, for example, it can be fixed connection, and can also be detachable connection, or integrated; can be direct linking, and can be indirect linking through an intermediary, or connection in two elements or interaction with each other between two element. The terms "first" "second" and the like as mentioned in this application do not denote any order, quantity, or importance, but are used only to distinguish different components. Similarly, the terms "one" or "one piece" do not indicate a quantitative limitation, but the presence of at least one. In the present embodiments, the term "and / or" in this application describes an association relationship for associated objects and represents that three relationships may exist. For example, A and / or B may represent the following three cases: only A exists, both A and B exist, and only B exists. In the description of the present embodiments, "plurality of" means two or more, unless otherwise specified. For example, a plurality of registration masts refer to two or more registration masts. For an ordinary person skilled in the art, the specific implications of the above terms in the present invention can be comprehended in accordance with specific conditions.

[0028] Below is a detailed explanation of the present invention.

[0029] in one aspect, As shown in Figs. 1-12: the present invention discloses a supporting unit suitable for construction of prefabricated concrete frame structure, which comprises a plurality of groups of below-beam supporting units 1 connected sequentially to form a cavity, and an under-composite slab supporting unit 2 located in the cavity and connected to the plurality of groups of below-beam supporting units 1; and the under-composite slab supporting unit 2 comprises an under-slab supporting assembly 21, two groups of composite slab back-ridge systems 23 installed on the under-slab supporting assembly 21, and a slab-band back ridge system 22 connected to the two groups of composite slab back-ridge systems 23 and located therebetween.

[0030] Furthermore, top faces of the composite slab back-ridge systems 23 and a top face of the slab-band back ridge system 22 are on the same plane; the below-beam supporting unit 1 is used for forming a beam body; the under-composite slab supporting unit 2 is used for installing a composite slab and disposing a slab-band for two adjacent groups of composite slabs; the slab-band back ridge system 22 makes composite slabs of different sizes installed and a slab-band formwork effectively installed; an installation chamber for installing the slab-band formwork is disposed on the slab-band back ridge system 22, so that an elevation of a top of the slab-band formwork installed on the slab-band back ridge system 22 is consistent with an elevation of a bottom of the installed composite slab.

[0031] In some possible implementations, in order to effectively achieve the support for installation of the composite slabs with different specifications and sizes, apply uniform stress on the composite slabs, and effectively support the slab-band formwork.

[0032] As shown in Figs. 1, 2, 4, 5 and 6, the slab-band back ridge system 22 comprises a plurality of groups of parallel slab-band back ridges 221 with two ends connected to the two groups of composite slab back-ridge systems 23, a formwork back ridge assembly 222 for connecting two adjacent groups of the slab-band back ridges 221, and a plurality of groups of cushion blocks 223 installed on the slab-band back ridges 221 and sliding along a long direction of the slab-band back ridges 221; top faces of the cushion blocks 223 and top faces of the slab-band back ridges 221 are on the same plane; and the slab-band back ridges 221 are connected to the under-slab supporting assembly 21.

[0033] When in use, the cushion blocks 223 are relocated according to the size of the composite slab, so that the cushion blocks 223 effectively support the composite slab, and the cushion blocks 223 are fixed after the composite slab is installed in place; subsequently, the slab-band formwork is installed; and the cushion block 223 will effectively limit the position of the slab-band formwork and prevent its movement.

[0034] In some possible implementations, as shown in Fig. 6, the slab-band back ridge 221 is configured with a formwork installation groove, a slideway 2211 is configured along a length direction of the slab-band back ridge 221, and the cushion blocks 223 are located in the formwork installation groove and in slidable fitting with the slideway 2211.

[0035] A bottom of the formwork installation groove and a top face of the formwork back ridge assembly 222 are on the same plane and fits with each other to form an installation chamber; the formwork back ridge assembly 222 is used for supporting a formwork, and a top face of the installed formwork is coplanar with the top faces of the cushion blocks 223.

[0036] The slideway 2211 is configured along a long direction of the slab-band back ridge 221, and the cushion blocks 223 slide in the slideway 2211, thereby achieving support and fixing of the bottoms of the composite slabs with different specifications and sizes; and the formwork installation groove is configured on the slab-band back ridge 221 for installing the formwork of a slab-band part.

[0037] Furthermore, the slideway 2211 passes through the slab-band back ridge 221 in a vertical direction; the cushion block 223 comprises a supporting plate installed in the formwork installation groove as well as a lead screw with one end connected to a bottom of the supporting plate and the other end passing through the slideway 2211. The lead screw passes through the slideway 2211 and slides therein. When the lead screw moves to a required position, it fits with a nut to achieve fixation of the cushion block 223.

[0038] In some possible implementations, in order to effectively support and fix the composite slab.

[0039] As shown in Figs. 1 and 2, the composite slab back-ridge system 23 comprises a plurality of groups of slab sub-back ridges 231 connected to ends of the slab-band back ridges 221 and arranged in one-to-one correspondence with the slab-band back ridges 221, and a slab main back ridge 232 provided in parallel with the formwork back ridge assembly 222 and located between two adjacent groups of the slab sub-back ridges 231.

[0040] The slab sub-back ridge 231 and the slab main back ridge 232 are connected with each other to form a frame for laying the composite slabs; the frame is in a hollow structure, on which the composite slabs are directly installed, thus reducing the usage amount of the formwork.

[0041] At least two groups of slab main back ridges 232 are arranged between two adjacent groups of the slab sub-back ridges 231, with two ends connected to the slab sub-back ridges 231; and the slab main back ridge 232 closer to the slab-band back ridge 221, the slab sub-back ridge 231 and the slab-band back ridge 221 are connected by use of a connector A 24, and one end of the slab sub-back ridge 231 that is farther away from the slab-band back ridge 221 is connected to the slab main back ridge 232 farther away from the slab-band back ridge 221 by use of a connector A 24.

[0042] Two groups of slab main back ridges 232 are arranged between two adjacent groups of the slab sub-back ridges 231, the two groups of slab main back ridges 232 are arranged in parallel and perpendicular to the slab sub-back ridges 231 to form a square hollow cavity, and the composite slab is laid on a square frame structure formed by connection between the slab main back ridges 232 and the slab sub-back ridges 233; and the slab-band formwork is installed in the installation chamber, and a bottom of the composite slab is coplanar with a top of the slab-band formwork, and in turn a concrete structure on the slab-band formwork is coplanar with the composite slab in subsequent construction.

[0043] One end of each of the slab sub-back ridges 231 is connected to the slab-band back ridges 221 by use of the connector A 24, so the number of the slab sub-back ridges 231 is the same as that of the slab-band back ridges 221. Two adjacent groups of the slab sub-back ridges 231 are connected and fixed through the slab main back ridges 232, and fit with the cushion blocks 223 to form a supporting unit for supporting the composite slab.

[0044] The formwork back ridge assembly 222 comprises a plurality of groups of longitudinal back ridges 2221 arranged in parallel, with two ends connected to the slab-band back ridges 221, and a plurality of groups of transverse back ridges 2222 located between two adjacent groups of the longitudinal back ridges 2221 and used for connecting two adjacent groups of the longitudinal back ridges 2221; top faces of the longitudinal back ridges 2221, top faces of the transverse back ridges 2222 and the bottom of the installation groove are on the same plane; and the formwork back ridge assembly 222 fits with the installation groove to effectively achieve the support for the slab-band formwork. The slab main back ridges 232 and the longitudinal back ridges 2221 are arranged in parallel.

[0045] In some possible implementations, the under-slab supporting assembly 21 comprises a plurality of groups of vertical rods 211 and a connecting rod assembly 212 for connecting two adjacent groups of the vertical rods 211; and the plurality of groups of vertical rods 211 are arranged in one-to-one correspondence with the connectors A 24 and are connected to bottoms of the connectors A 24.

[0046] The vertical rods 211 are vertically arranged and installed on the floor, and the plurality of groups of vertical rods 211 are connected into a whole by use of a connecting assembly, thereby realizing the support and fixation of the composite slab back-ridge system 23 and the slab-band back ridge system 22.

[0047] In some possible implementations, as shown in Fig. 2, a cantilever part 25 is provided on the connector A 24 closer to the below-beam supporting unit 1.

[0048] The cantilever part 25 is disposed outside the under-composite slab supporting unit 2, with one end connected to the connector A 24 and disposed horizontally; when the gap between the outer side of the under-composite slab supporting unit 2 and the inner side of the below-beam supporting unit 1 is greater than or equal to 250 mm, the support and fixation of the composite slab installed on the under-composite slab supporting unit 2 are strengthened through the arrangement of the cantilever part 25.

[0049] In some possible implementations, as shown in Figs. 2, 3 and 7, the connecting rod assembly 212 comprises an edge constrained triangular support 2121 located outside the under-slab supporting assembly 21 and used for connecting the adjacent vertical rods 211 outside, and a horizontal rod located inside the under-slab supporting assembly 21 and used for connecting the adjacent vertical rods 211 inside.

[0050] As shown in Figs. 1 and 2, the edge constrained triangular support 2121 is disposed outside the under-slab supporting assembly 21 and used for connecting the under-slab supporting assembly 21 and the slab sub-back ridge 231 or the slab main back ridge 232 or the slab-band back ridge 221, so as to further strengthen the connection of the under-slab supporting assembly 21 with the composite slab back-ridge system 23 and the slab-band back ridge system 22, and make the support more stable and reliable.

[0051] In some possible implementations, as shown in Fig. 7, the edge constrained triangular support 2121 comprises a horizontal connecting rod 21211 horizontally disposed and used for connecting two adjacent groups of the vertical rods 211, two groups of inclined struts 21212 hinged with two ends of the horizontal connecting rod 21211, and a back ridge connecting plate 21213 horizontally disposed and hinged with one end of each of the two groups of inclined struts 21212 which is farther away from the horizontal connecting rod 21211.

[0052] A fixed plate 2212 connected to the back ridge connecting plate 21213 is disposed at the bottom of the slab sub-back ridge 231 or the slab main back ridge 232 or the slab-band back ridge 221; and the fixed plate 2212 is located in the middle of a long direction of the slab sub-back ridge 231 or the slab main back ridge 232 or the slab-band back ridge 221.

[0053] One end of each of the two groups of inclined struts 21212 that is farther away from the horizontal connecting rod 21211 is hinged with the back ridge connecting plate 21213, and the other end is hinged with the horizontal connecting rod 21211.

[0054] The horizontal connecting rod 21211, the inclined strut 21212 and the horizontal rod are individually adjustable in their axial lengths and have the same structure.

[0055] The horizontal connecting rod 21211 comprises a sleeve and two groups of lead screws in screw connection with two ends of the sleeve; and threads of the two groups of lead screws rotate in opposite directions.

[0056] When the lengths of the horizontal connecting rod 21211, the inclined strut 21212 and the horizontal rod are adjusted, the sleeve is screwed to make the two groups of lead screws closer to or farther away from each other, thus achieving the connection between the vertical rods 211 at different distances.

[0057] It should be noted that the vertical rod 211 is provided with a ring lock, and the horizontal rod and the horizontal connecting rod 21211 are provided with L-shaped connecting pieces at two ends, so that connection between the vertical rod 211 and the horizontal rod and the horizontal connecting rod 21211 is achieved by use of the L-shaped connecting pieces and the ring lock.

[0058] In some possible implementations, as shown in Figs. 2 and 8, the below-beam supporting unit 1 comprises an underbeam supporting assembly 11 connected to the under-slab supporting assembly 21 through a horizontal linkage rod 112 and a beam back-ridge system 12 installed on an underbeam supporting assembly 11.

[0059] The beam back-ridge system 12 is used for the installation of beam formwork; and the underbeam supporting assembly 11 is used for supporting the beam back-ridge system 12 and is connected to the under-slab supporting assembly 21 to form an integral supporting structure, so as to further strengthen the stability of the support.

[0060] In some possible implementations, as shown in Fig. 9, the beam back-ridge system 12 comprises two groups of beam main back ridges 121 arranged in parallel with the slab main back ridge 232 or the slab sub-back ridge 231 and located on the same horizontal plane, a beam sub-back ridge 122 for connecting the two groups of beam main back ridges 121 and a connector B 123 for connecting the beam main back ridge 121 and the underbeam supporting assembly 11.

[0061] In some possible implementations, as shown in Fig. 8, the underbeam supporting assembly 11 comprises an upright rod 111 connected to the connector B 123 and disposed vertically; two adjacent ones of the upright rods 111 are connected through the horizontal linkage rod 112; and the upright rod 111 and the adjacent vertical rod 211 are connected through the horizontal linkage rod 112.

[0062] The structure of the horizontal linkage rod 112 is the same as that of the horizontal rod and the horizontal linkage rod 112, which is not described here.

[0063] In some possible implementations, as shown in Figs. 10 and 11, the connector B 123 has an l-shaped structure and comprises a connecting base B 1231 and an insertion tube B 1232 installed on a bottom of the connecting base B 1231.

[0064] The connecting base B 1231 comprises two groups of clamping plates connected to ends of the beam main back ridges 121 and arranged in parallel, and a connecting plate for connecting the two groups of clamping plates; and a C-shaped slot B with a downward opening is configured on the clamping plate.

[0065] The end of the beam main back ridge 121 is inserted into the C-shaped slot B and is in pin connection, and a top face of the beam main back ridge 121 and a top face of the clamping plate are on the same plane.

[0066] When the below-beam supporting unit 1 is the below-beam supporting unit 1 of a boundary beam, two groups of the insertion tubes are arranged on two clamping plates, fitting with two groups of the upright rods 111; when the below-beam supporting unit 1 is the below-beam supporting unit 1 of an intermediate beam, one group of the insertion tubes B1232 is arranged on the bottom of the connecting plate and is in plug fitting with one group of the upright rods 111.

[0067] As a matter of course, in order to improve the bearing capacity of the intermediate beam, the below-beam supporting unit 1 of the intermediate beam may also adopt a structure the same as that of the below-beam supporting unit 1 of the boundary beam.

[0068] In some possible implementations, as shown in Fig. 12, the connector A 24 comprises a connecting base A 241 having a cross structure as well as an insertion tube A 242 connected to a bottom of the connecting base A 241 and the vertical rod 211, and a C-shaped slot A with a downward opening is configured on the connecting base A 241.

[0069] An end of each of the slab-band back ridge 221, the slab main back ridge 232 and the slab sub-back ridge 231 is installed in the C-shaped slot A and is in pin connection, and a top face of the connecting base A 241 and a top face of each of the slab-band back ridge 221, the slab main back ridge 232 and the slab sub-back ridge 231 are on the same plane.

[0070] The upright rods 111 and the vertical rods 211 have the same structure, namely, round steel pipe.

[0071] The slab main back ridge 232, the slab sub-back ridge 231, the slab-band back ridge 221, the beam sub-back ridge 122 and the beam main back ridge 121 have the same structure.

[0072] In another aspect, as shown in Figs. 13 and 14, a supporting system suitable for construction of prefabricated concrete frame structure comprises a plurality of groups of above-mentioned supporting units, and two adjacent groups of the supporting units share the same group of below-beam supporting unit 1, where the shared group of below-beam supporting unit 1 is the below-beam supporting unit 1 of the intermediate beam.

[0073] The present invention is not limited to the detailed description of the implementations mentioned above. The present invention expands to any new feature or any new combination disclosed in the Description, and steps in any new method or process or any new combination disclosed.

Claims

1. A supporting unit suitable for construction of prefabricated concrete frame structure, comprising a plurality of groups of below-beam supporting units (1) connected sequentially to form a cavity, and an under-composite slab supporting unit (2) located in the cavity and connected to the plurality of groups of below-beam supporting units (1); wherein the under-composite slab supporting unit (2) comprises an under-slab supporting assembly, two groups of composite slab back-ridge systems (23) installed on the under-slab supporting assembly, and a slab-band back ridge system (22) connected to the two groups of composite slab back-ridge systems (23) and located therebetween.

2. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 1, wherein the slab-band back ridge system (22) comprises a plurality of groups of parallel slab-band back ridges (221) with two ends connected to the two groups of composite slab back-ridge systems (23), a formwork back ridge assembly (222) for connecting two adjacent groups of the slab-band back ridges (221), and a plurality of groups of cushion blocks (223) installed on the slab-band back ridges (221) and sliding along a long direction of the slab-band back ridges (221); wherein top faces of the cushion blocks (223) and top faces of the slab-band back ridges (221) are on the same plane; and the slab-band back ridges (221) are connected to the under-slab supporting assembly.

3. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 2, wherein the slab-band back ridge (221) is configured with a formwork installation groove, a slideway (2211) is configured along a length direction of the slab-band back ridge (221), and the cushion blocks (223) are located in the formwork installation groove and in slidable fitting with the slideway (2211).

4. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 2, wherein the composite slab back-ridge system (23) comprises a plurality of groups of slab sub-back ridges (231) connected to ends of the slab-band back ridges (221) and arranged in one-to-one correspondence with the slab-band back ridges (221), and a slab main back ridge (232) provided in parallel with the formwork back ridge assembly (222) and located between two adjacent groups of the slab sub-back ridges (231); wherein at least two groups of slab main back ridges (232) are arranged between two adjacent groups of the slab sub-back ridges (231), with two ends connected to the slab sub-back ridges (231); and the slab main back ridge (232) closer to the slab-band back ridge (221), the slab sub-back ridge (231) and the slab-band back ridge (221) are connected by use of a connector A (24), and one end of the slab sub-back ridge (231) that is farther away from the slab-band back ridge (221) is connected to the slab main back ridge (232) farther away from the slab-band back ridge (221) by use of a connector A (24).

5. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 4, wherein the under-slab supporting assembly comprises a plurality of groups of vertical rods (211) and a connecting rod assembly (212) for connecting two adjacent groups of the vertical rods (211); and the plurality of groups of vertical rods (211) are arranged in one-to-one correspondence with the connectors A (24) and are connected to bottoms of the connectors A (24).

6. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 4, wherein a cantilever part is provided on the connector A (24) closer to the below-beam supporting unit (1).

7. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 4, wherein the connector A (24) comprises a connecting base A (241) having a cross structure as well as an insertion tube A (242) connected to a bottom of the connecting base A (241) and the vertical rod (211), and a C-shaped slot with a downward opening is configured on the connecting base A (241).

8. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 5, wherein the connecting rod assembly (212) comprises an edge constrained triangular support (2121) located outside the under-slab supporting assembly and used for connecting the adjacent vertical rods (211) outside, and a horizontal rod located inside the under-slab supporting assembly and used for connecting the adjacent vertical rods (211) inside.

9. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 8, wherein the edge constrained triangular support (2121) comprises a horizontal connecting rod (21211) horizontally disposed and used for connecting two adjacent groups of the vertical rods (211), two groups of inclined struts (21212) hinged with two ends of the horizontal connecting rod (21211), and a back ridge connecting plate (21213) horizontally disposed and hinged with one end of each of the two groups of inclined struts (21212) which is farther away from the horizontal connecting rod (21211); the horizontal connecting rod (21211), the inclined strut (21212) and the horizontal rod are individually adjustable in their axial lengths and have the same structure; the horizontal connecting rod (21211) comprises a sleeve and two groups of lead screws in screw connection with two ends of the sleeve; and threads of the two groups of lead screws rotate in opposite directions.

10. The supporting unit suitable for construction of prefabricated concrete frame structure according to any of claims 4 to 9, wherein the below-beam supporting unit (1) comprises an underbeam supporting assembly (11) connected to the under-slab supporting assembly through a horizontal linkage rod (112) and a beam back-ridge system (12) installed on the underbeam supporting assembly (11).

11. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 10, wherein the beam back-ridge system (12) comprises two groups of beam main back ridges (121) arranged in parallel with the slab main back ridge (232) or the slab sub-back ridge (231) and located on the same horizontal plane, a beam sub-back ridge (122) for connecting the two groups of beam main back ridges (121) and a connector B (123) for connecting the beam main back ridge (121) and the underbeam supporting assembly (11).

12. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 11, wherein the underbeam supporting assembly (11) comprises an upright rod (111) connected to the connector B (123) and disposed vertically; two adjacent ones of the upright rods (111) are connected through the horizontal linkage rod (112); and the upright rod (111) and the adjacent vertical rod (211) are connected through the horizontal linkage rod (112).

13. The supporting unit suitable for construction of prefabricated concrete frame structure according to claim 12, wherein the connector B (123) has an I-shaped structure and comprises a connecting base B (1231) and an insertion tube B (1232) installed on a bottom of the connecting base B (1231); the connecting base B (1231) comprises two groups of clamping plates connected to ends of the beam main back ridges (121) and arranged in parallel, and a connecting plate for connecting the two groups of clamping plates; and a C-shaped slot B with a downward opening is configured on the clamping plate.

14. A supporting system suitable for construction of prefabricated concrete frame structure, comprising a plurality of groups of supporting units according to any one of claims 1 to 13, and two adjacent groups of the supporting units share the same group of below-beam supporting unit (1).

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