A support unit and system applicable to the construction of prefabricated concrete frame structures

Abstract

The present invention relates to the technical field of prefabricated building construction, and specifically discloses a support unit and system suitable for the construction of prefabricated concrete frame structures. The support unit includes multiple groups of beam bottom support units that are sequentially connected and enclose to form a chamber, and a composite slab bottom support unit located in the chamber and respectively connected to the multiple groups of beam bottom support units; the composite slab bottom support unit includes a slab bottom support assembly, two groups of composite slab backrest systems installed on the slab bottom support assembly, and a slab strip backrest system that is respectively connected to the two groups of composite slab backrest systems and located between the two groups of composite slab backrest systems. In the present invention, adjacent vertical rods are connected through horizontal rods, and adjacent vertical rods and vertical columns are connected through horizontal connecting rods to form a support force system. There is a large space at the bottom of the beam bottom support unit and the composite slab support unit, which is convenient for interspersed construction or safety inspection, providing a convenient space; and it can effectively support the composite slab and the slab strip formwork.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated building construction, and more specifically, to a support unit and system suitable for the construction of prefabricated concrete frame structures. Background Art

[0002] As a building form that promotes the transformation of building construction towards industrialization, intelligence, and greenness, prefabricated buildings have developed rapidly in recent years with the support of national and local policies. However, the construction method of prefabricated buildings still follows the traditional construction method, resulting in a large amount of resource waste and cost increase.

[0003] Taking the prefabricated concrete formwork support unit as an example, the prefabricated components themselves have relatively large bearing capacity and stiffness. However, in many projects, the full hall scaffolding and full paving of wooden formwork are still widely used as the support unit for prefabricated structures, resulting in the fact that the prefabricated structure does not reduce the amount of structural measures compared with the traditional structure, and it is difficult to carry out interspersed construction.

[0004] In recent years, the aluminum formwork support unit has been applied in many projects and has played a relatively significant role in construction quality and construction efficiency. Especially due to the idea of standardization and modularization, the turnover rate of aluminum formwork has been greatly improved. However, different projects require specialized formwork design, and the turnover rate of aluminum formwork components needs to reach a relatively high number of times to achieve the cost-competitive advantage compared with wooden formwork. At the same time, the high-precision characteristics of aluminum formwork lack sufficient adjustment tolerance, often resulting in position conflicts with the civil engineering structure construction.

[0005] With the rapid development of prefabricated structures, independent supports, as a new support form, have been applied to a certain extent, but the support stability of independent supports is relatively poor, so they have not been effectively popularized. Summary of the Invention

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

[0007] The solution adopted by the present invention to solve the technical problem is:

[0008] On the one hand:

[0009] The present invention discloses a support unit suitable for the construction of prefabricated concrete frame structures, including multiple groups of beam bottom support units connected in sequence and enclosing to form a chamber, and a composite slab bottom support unit located in the chamber and respectively connected to the multiple groups of beam bottom support units;

[0010] The lower support unit of the laminated slab includes a sub - slab support assembly, two sets of laminated slab back - rib systems installed on the sub - slab support assembly, and a slab - strip back - rib system connected to the two sets of laminated slab back - rib systems respectively and located between them; the top surfaces of the laminated slab back - rib systems and the top surface of the slab - strip back - rib system are on the same plane.

[0011] In some possible implementation manners, the slab - strip back - rib system includes multiple sets of slab - strip back - ribs arranged in parallel with both ends respectively connected to the two sets of laminated slab back - rib systems, a formwork back - rib assembly for connecting adjacent two sets of slab - strip back - ribs, and multiple sets of pads installed on the slab - strip back - ribs and sliding along the length direction of the slab - strip back - ribs;

[0012] The top surface of the pad is on the same plane as the top surface of the slab - strip back - rib; the slab - strip back - rib is connected to the sub - slab support assembly.

[0013] In some possible implementation manners, a formwork installation groove is provided on the slab - strip back - rib, a sliding groove is arranged along the rectangle of the slab - strip back - rib, and the pad is located in the formwork installation groove and is in sliding fit with the sliding groove.

[0014] In some possible implementation manners, the laminated slab back - rib system includes multiple sets of sub - back - ribs connected to the end of the slab - strip back - rib and arranged in one - to - one correspondence with it, and main back - ribs parallel to the formwork back - rib assembly and located between adjacent two sets of sub - back - ribs;

[0015] There are at least two sets of main back - ribs between adjacent two sets of sub - back - ribs, and both ends are respectively connected to the sub - back - ribs; the main back - rib, sub - back - rib, and slab - strip back - rib on the side close to the slab - strip back - rib are connected by connector A, and one end of the sub - back - rib far from the slab - strip back - rib and the main back - rib far from the slab - strip back - rib are connected by connector A.

[0016] In some possible implementation manners, the sub - slab support assembly includes multiple sets of vertical rods and a connecting rod assembly for connecting adjacent two sets of vertical rods; the multiple sets of vertical rods are arranged in one - to - one correspondence with connector A and are connected to the bottom of connector A.

[0017] In some possible implementation manners, a cantilever is provided on connector A on the side close to the beam lower support unit.

[0018] In some possible implementation manners, connector A includes a connecting seat A in a cross structure, an insertion tube A connected to the bottom of the connecting seat A and connected to the vertical rod, and a C - shaped slot A with an opening downward is provided on the connecting seat A.

[0019] In some possible implementation manners, the connecting rod assembly includes an edge - restraint triangular brace located outside the sub - slab support assembly and used for connecting adjacent outer vertical rods, and a horizontal rod located inside the sub - slab support assembly and used for connecting the internal vertical rods to each other.

[0020] In some possible embodiments, the edge constraint triangular brace includes a horizontal connecting rod horizontally arranged for connecting adjacent two groups of vertical rods, two diagonal braces respectively hinged to two ends of the horizontal connecting rod, and a back brace connecting plate horizontally arranged and respectively hinged to one ends of the two diagonal braces far away from the horizontal connecting rod;

[0021] The horizontal connecting rod, the diagonal brace, and the horizontal rod are all adjustable in length along their axial directions and have the same structure;

[0022] The horizontal connecting rod includes a sleeve and two screw rods respectively screwed to two ends of the sleeve; the thread directions of the two screw rods are opposite.

[0023] In some possible embodiments, the beam bottom support unit includes a beam bottom support assembly connected to the slab bottom support assembly through a horizontal connecting rod, and a beam back brace system installed on the beam bottom support member.

[0024] In some possible embodiments, the beam back brace system includes two beam main back braces arranged in parallel with the slab main back brace or the slab secondary back brace and located on the same horizontal plane, a beam secondary back brace for connecting the two beam main back braces, and a connector B for connecting the beam main back brace and the beam bottom support assembly.

[0025] In some possible embodiments, the beam bottom support assembly includes a vertical rod connected to the connector B and arranged vertically; adjacent two vertical rods are connected through a horizontal connecting rod; the adjacent vertical rod and the vertical rod are connected through a horizontal connecting rod.

[0026] In some possible embodiments, the connector B has an I-shaped structure and includes a connecting seat B and an insertion tube B installed at the bottom of the connecting seat B;

[0027] The connecting seat B includes two clamping plates respectively connected to the ends of the beam main back brace and arranged in parallel, and a connecting plate for connecting the two clamping plates; a C-shaped slot B with an opening downward is arranged on the clamping plate.

[0028] On the other hand:

[0029] A support system applicable to the construction of precast concrete frame structures includes multiple groups of support units as described above, and adjacent two groups of support units share a group of beam bottom support units.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] In the present invention, the adjacent vertical rods are connected through the horizontal rod, and the adjacent vertical rod and the vertical rod are connected through the horizontal connecting rod to form a support force system. There is a large space at the bottom of the beam bottom support unit and the composite slab support unit, which is convenient for interpenetrating construction or safety inspection and provides a convenient space;

[0032] The present invention supports the back-stitch system of the composite board and the back-stitch system of the plate strip by arranging the under-board support assembly. The plate strip back-stitch system is provided with a pad that cooperates with the back-stitch system of the composite board to realize the support of the composite board. The support of composite boards of different specifications and sizes can be used by sliding the pad; at the same time, the position of the plate strip template is determined; the difficulty of supporting the formwork caused by the different elevations of the bottom of the composite board and the bottom of the plate strip template in the prior art is effectively solved, and the problem of using a full-spread template to make the back stitch force uniform or the problem of the whole unit being divided due to the position of the plate strip is avoided;

[0033] The present invention is suitable for wooden mold support, and the vertical pole horizontal rod adopts the traditional commonly used rod form. Compared with aluminum molds, it has obvious cost advantages and the advantage of adapting to room size adjustment;

[0034] The invention has a simple structure and strong practicability; the composite board is directly laid on the composite board back rib system, which reduces the usage of the template and reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the support unit in the present invention;

[0036] Figure 2 It is a structural schematic diagram of the lower support unit of the composite plate in the present invention;

[0037] Figure 3 It is a side view schematic diagram of the lower support unit of the composite plate in the present invention;

[0038] Figure 4 It is a structural schematic diagram of the plate strip back rib system in the present invention;

[0039] Figure 5 It is a structural schematic diagram of the plate strip back rib, fixed plate and cushion block in the present invention;

[0040] Figure 6 It is a structural schematic diagram of the plate strip back rib, slide groove, fixed plate and cushion block in the present invention;

[0041] Figure 7 It is a schematic structural diagram of the edge-constrained triangular brace in the present invention;

[0042] Figure 8 It is a schematic diagram of the connection relationship between the support unit under the center beam of the present invention, the vertical rod and the horizontal connecting rod;

[0043] Figure 9 It is a schematic diagram of the connection relationship between the connector B, the main back rib of the beam, and the auxiliary back rib of the beam in the present invention;

[0044] Figure 10 A schematic diagram of the structure of the connector B in the present invention;

[0045] Figure 11Another structural schematic diagram of the connection joint B in the present invention;

[0046] Figure 12 Structural schematic diagram of the connection head A in the present invention;

[0047] Figure 13 Structural schematic diagram of the support system in the present invention;

[0048] Figure 14 Plan view of the support system in the present invention;

[0049] Wherein: 1 - Under - beam support unit, 11 - Under - beam support assembly, 111 - Vertical pole, 112 - Horizontal connecting rod, 12 - Beam back - rib system, 121 - Main beam back - rib, 122 - Sub - beam back - rib, 123 - Connection joint B, 1231 - Connection seat B, 1232 - Insertion tube B, 2 - Under - composite - slab support unit, 21 - Under - slab support assembly, 211 - Vertical rod, 212 - Link assembly, 2121 - Edge - restraint triangular brace, 21211 - Horizontal link, 21212 - Diagonal brace, 21213 - Back - rib connecting plate, 22 - Slab - strip back - rib system, 221 - Slab - strip back - rib, 2211 - Slide groove, 2212 - Fixed plate, 222 - Form - back - rib assembly, 223 - Spacer, 23 - Composite - slab back - rib system, 231 - Sub - slab back - rib, 232 - Main slab back - rib, 24 - Connection head A, 241 - Connection seat A, 242 - Insertion tube A, 25 - Cantilever member. Detailed implementation manners

[0050] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "attachment", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. The "first", "second" and similar terms mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "one" do not indicate a quantity limit, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise stated, the meaning of "a plurality" refers to two or more. For example, a plurality of positioning columns means two or more positioning columns. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The present invention will be described in detail below.

[0052] on the one hand:

[0053] like Figures 1 - 12 As shown:

[0054] The present invention discloses a support unit suitable for the construction of an assembled concrete frame structure, comprising a plurality of groups of beam support units 1 which are sequentially connected and enclosed to form a cavity, and a composite plate support unit 2 which is located in the cavity and is respectively connected to the plurality of groups of beam support units 1;

[0055] The composite board lower support unit 2 includes a lower board support assembly 21, two groups of composite board back-corrugation systems 23 installed on the lower board support assembly 21, and a plate strip back-corrugation system 22 respectively connected to the two groups of composite board back-corrugation systems 23 and located between the two groups of composite board back-corrugation systems 23.

[0056] Furthermore, the top surface of the laminated board back-rib system 23 and the top surface of the board strip back-rib system 22 are on the same plane;

[0057] The beam lower support unit 1 is used for forming the beam body;

[0058] The lower support unit 2 of the laminated plate is used for installing the laminated plate and setting the plate strips of two groups of adjacent laminated plates;

[0059] The plate strip backing system 22 can be used for the installation of composite panels of different sizes, and the plate strip formwork can be effectively installed; the plate strip backing system 22 is provided with an installation cavity for installing the plate strip formwork, so that the elevation of the top of the plate strip formwork after it is installed on the plate strip backing system 22 is consistent with the elevation of its bottom after the composite panel is installed.

[0060] In some possible implementations, in order to effectively realize the installation support for composite plates of different specifications and sizes, the composite plates are evenly stressed and can effectively support the plate strip formwork;

[0061] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, the plate strip back rib system 22 includes a plurality of sets of plate strip back ribs 221 arranged in parallel and connected to two sets of composite plate back rib systems 23 at both ends, a template back rib assembly 222 for connecting two adjacent sets of plate strip back ribs 221, and a plurality of sets of pads 223 installed on the plate strip back ribs 221 and sliding along the long direction of the plate strip back ribs 221;

[0062] The top surface of the cushion block 223 is on the same plane as the top surface of the plate strip back rib 221 ; the plate strip back rib 221 is connected to the lower plate support assembly 21 .

[0063] During use, according to the size of the laminated slab, the position of the spacer block 223 is adjusted so that the spacer block 223 effectively supports the laminated slab, and the spacer block 223 is fixed after the laminated slab is installed in place; then the formwork of the strip is installed; the spacer block 223 will effectively limit the position of the strip formwork to prevent it from moving;

[0064] In some possible embodiments, such as Figure 6 As shown, a formwork installation groove is provided on the strip back rib 221, a sliding groove 2211 is provided along the rectangle of the strip back rib 221, and the spacer block 223 is located in the formwork installation groove and is slidably matched with the sliding groove 2211.

[0065] The bottom of the formwork installation groove is on the same plane as the top surface of the formwork back rib assembly 222 and they cooperate with each other to form an installation cavity; the formwork back rib assembly 222 is used to support the formwork, and the top surface of the installed formwork is coplanar with the top surface of the spacer block 223;

[0066] The sliding groove 2211 is arranged along the length direction of the strip back rib 221, and the spacer block 223 slides in the sliding groove 2211, so as to realize the support and fixation of the bottom of laminated slabs with different specifications and sizes. The formwork installation groove is arranged on the strip back rib 221 for installing the formwork of the strip member;

[0067] Furthermore, the sliding groove 2211 penetrates through the strip back rib 221 in the vertical direction. The spacer block 223 includes a support plate installed in the formwork installation groove and a screw rod with one end connected to the bottom of the support plate and the other end passing through the sliding groove 2211. The screw rod passes through the sliding groove 2211 and slides in the sliding groove 2211. After it moves to the required position, the spacer block 223 is fixed by the cooperation of the nut and the screw rod;

[0068] In some possible embodiments, in order to effectively realize the support and fixation of the laminated slab;

[0069] Such as Figure 1 、 Figure 2 As shown, the laminated slab back rib system 23 includes multiple groups of secondary strip back ribs 231 connected to the ends of the strip back rib 221 and arranged in one-to-one correspondence with it, and a main strip back rib 232 arranged parallel to the formwork back rib assembly 222 and located between two adjacent groups of secondary strip back ribs 231;

[0070] The secondary strip back ribs 231 and the main strip back ribs 232 are connected to each other to form a framework for laying the laminated slab, which is a hollow structure. The laminated slab is directly installed on this structure, reducing the amount of formwork used;

[0071] There are at least two main formwork back ribs 232 between two adjacent sets of secondary formwork back ribs 231, and both ends are respectively connected to the secondary formwork back ribs 231; the main formwork back ribs 232, secondary formwork back ribs 231, and formwork belt back ribs 221 on the side close to the formwork belt back ribs 221 are connected by connector A24, and one end of the secondary formwork back ribs 231 far from the formwork belt back ribs 221 and the main formwork back ribs 232 far from the formwork belt back ribs 221 are connected by connector A24.

[0072] There are two main formwork back ribs 232 between two adjacent sets of secondary formwork back ribs 231. The two main formwork back ribs 232 are arranged in parallel and perpendicular to the secondary formwork back ribs 231 to form a square hollow cavity. The composite slab is laid on the square frame structure formed by the connection of the main formwork back ribs 232 and the secondary formwork back ribs 233; the formwork belt template is installed in the installation cavity, and the bottom of the composite slab and the top of the formwork belt template will be coplanar, so that the concrete structure on the formwork belt template will be coplanar with the composite slab after later construction;

[0073] One end of the secondary formwork back ribs 231 is connected to the formwork belt back ribs 221 through connector A24, and the number is the same as that of the formwork belt back ribs 221. Two adjacent sets of secondary formwork back ribs 231 are connected and fixed by the main formwork back ribs 232, and cooperate with the cushion blocks 223 to form a support unit for supporting the composite slab.

[0074] The formwork back rib assembly 222 includes multiple longitudinal back ribs 2221 with both ends respectively connected to the formwork belt back ribs 221 and arranged in parallel, and multiple transverse back ribs 2222 located between two adjacent sets of longitudinal back ribs 2221 and used to connect the two adjacent sets of longitudinal back ribs 2221; the top surfaces of the longitudinal back ribs 2221, the top surfaces of the transverse back ribs 2222, and the bottom of the installation groove are on the same plane; the formwork back rib assembly 222 and the installation groove cooperate to effectively support the formwork belt template. The main formwork back ribs 232 are arranged in parallel with the longitudinal back ribs 2221.

[0075] In some possible implementation manners, the under-slab support assembly 21 includes multiple vertical rods 211 and a connecting rod assembly 212 for connecting two adjacent sets of vertical rods 211; the multiple vertical rods 211 are arranged in one-to-one correspondence with the connector A24 and connected to the bottom of the connector A24.

[0076] The vertical rods 211 are arranged vertically and installed on the floor. The multiple vertical rods 211 are connected by a connecting component to form a whole to realize the support and fixation of the composite slab back rib system 23 and the formwork belt back rib system 22.

[0077] In some possible implementation manners, as Figure 2 shown, a cantilever member 25 is provided on the connector A24 on the side close to the beam under-slab support unit 1.

[0078] The cantilever member 25 is arranged on the outside of the composite slab lower support unit 2, and one end thereof is connected to the connection head A24 and is horizontally arranged; when the gap between the outside of the composite slab lower support unit 2 and the inside of the beam lower support unit 1 is greater than or equal to 250 mm, the support and fixation of the composite slab installed on the composite slab lower support unit 2 are strengthened through the arrangement of the cantilever member 25.

[0079] In some possible implementation manners, such as Figure 2 , Figure 3 , Figure 7 shown, the connecting rod assembly 212 includes an edge constraint triangular brace 2121 located outside the slab lower support assembly 21 and used for connecting adjacent vertical rods 211 on the outside, and a horizontal rod located inside the slab lower support assembly 21 and used for connecting the vertical rods 211 inside it.

[0080] Such as Figure 1 , Figure 2 shown, the edge constraint triangular brace 2121 is arranged on the outside of the slab lower support assembly 21, and it is used for the connection between the slab lower support assembly 21 and the slab secondary back brace 231 or the slab main back brace 232 or the slab belt back brace 221, further strengthening the connection between the slab lower support assembly 21 and the composite slab back brace system 23 and the slab belt back brace system 22, making the support more stable and reliable;

[0081] In some possible implementation manners, such as Figure 7 shown, the edge constraint triangular brace 2121 includes a horizontal connecting rod 21211 arranged horizontally and used for connecting two adjacent groups of vertical rods 211, two diagonal braces 21212 respectively hinged to both ends of the horizontal connecting rod 21211, and a back brace connecting plate 21213 arranged horizontally and respectively hinged to the ends of the two diagonal braces 21212 far away from the horizontal connecting rod 21211;

[0082] A fixing plate 2212 connected to the back brace connecting plate 21213 is arranged at the bottom of the slab secondary back brace 231 or the slab main back brace 232 or the slab belt back brace 221; the fixing plate 2212 is located at the middle of the slab secondary back brace 231 or the slab main back brace 232 or the slab belt back brace 221 along its length direction;

[0083] One end of each of the two diagonal braces 21212 far away from the horizontal connecting rod 21211 is respectively hinged to the back brace connecting plate 21213, and the other end is hinged to the horizontal connecting rod 21211;

[0084] The horizontal connecting rod 21211, the diagonal braces 21212, and the horizontal rod are respectively adjustable in length along their axial directions and have the same structure;

[0085] The horizontal connecting rod 21211 includes a sleeve and two screw rods respectively screwed to both ends of the sleeve; the thread directions of the two screw rods are opposite.

[0086] When adjusting the horizontal connecting rod 21211, the diagonal brace 21212, and the length of the horizontal rod, turn the sleeve, so as to realize the distance between the two groups of lead screws to approach or move away from each other, thereby realizing the connection between the vertical rods 211 at different distances;

[0087] It should be noted that there are socket buttons provided on the vertical rods 211, and L-shaped connectors are provided at both ends of the horizontal rod and the horizontal connecting rod 21211, and the connection between the two is realized through the cooperation of the L-shaped connector and the socket button.

[0088] In some possible implementation manners, such as Figure 2 、 Figure 8 As shown, the beam bottom support unit 1 includes a beam bottom support assembly 11 connected to the slab bottom support assembly 21 through a horizontal connecting rod 112, and a beam back rib system 12 installed on the beam bottom support.

[0089] The beam back rib system 12 is used for the installation of the beam formwork; the beam bottom support assembly 11 is used for supporting the beam back rib system 12 and connecting with the slab bottom support assembly 21 to form an integral support structure, further strengthening the stability of the support.

[0090] In some possible implementation manners, such as Figure 9 As shown, the beam back rib system 12 includes two groups of beam main back ribs 121 arranged parallel to the slab main back rib 232 or the slab secondary back rib 231 and located on the same horizontal plane, a beam secondary back rib 122 for connecting the two groups of beam main back ribs 121, and a connection head B123 for connecting the beam main back rib 121 and the beam bottom support assembly 11.

[0091] In some possible implementation manners, such as Figure 8 As shown, the beam bottom support assembly 11 includes a vertical rod 111 connected to the connection head B123 and arranged vertically; two adjacent vertical rods 111 are connected through a horizontal connecting rod 112; the adjacent vertical rods 111 and the vertical rods 211 are connected through a horizontal connecting rod 112.

[0092] The horizontal connecting rod 112 has the same structure as the horizontal rod and the horizontal connecting rod 112, which will not be elaborated here.

[0093] In some possible implementation manners, such as Figure 10 、 Figure 11 As shown, the connection head B123 has an I-shaped structure, including a connection seat B1231 and an insertion tube B1232 installed at the bottom of the connection seat B1231;

[0094] The connection seat B1231 includes two groups of clamping plates respectively connected to the ends of the beam main back ribs 121 and arranged in parallel, and a connecting plate for connecting the two groups of clamping plates; a C-shaped slot B opening downward is provided on the clamping plate.

[0095] The end of the main beam back brace 121 is inserted into the C-shaped slot B and connected by a pin. Its top surface is in the same plane as the top surface of the clamping plate.

[0096] When the beam lower support unit 1 is the beam lower support unit 1 of the side beam, there will be two sets of insertion pipes located on two clamping plates and cooperating with two sets of vertical rods 111. When the beam lower support unit 1 is the beam lower support unit 1 of the middle beam, the insertion pipe B1232 will be one set and located at the bottom of the connecting plate and inserted and cooperated with one set of vertical rods 111.

[0097] Of course, in order to improve the bearing capacity of the middle beam, the beam lower support unit 1 of the middle beam can also adopt the same structure as the beam lower support unit 1 of the side beam.

[0098] In some possible implementation manners, as Figure 12 shown, the connector A24 includes a connecting seat A241 in a cross structure, an insertion pipe A242 connected to the bottom of the connecting seat A241 and connected to the vertical rod 211. A C-shaped slot A with an opening downward is provided on the connecting seat A241.

[0099] The ends of the slab belt back brace 221, the main slab back brace 232, and the secondary slab back brace 231 are installed in the C-shaped slot A and connected by a pin. The top surface of the connecting seat A241 is in the same plane as the top surfaces of the slab belt back brace 221, the main slab back brace 232, and the secondary slab back brace 231.

[0100] The vertical rods 111 and the vertical rods 211 have the same structure and are both circular steel pipes.

[0101] The main slab back brace, the secondary slab back brace, the slab belt back brace, the secondary beam back brace, and the main beam back brace have the same structure.

[0102] On the other hand:

[0103] As Figure 13 、 Figure 14 shown, a support system suitable for the construction of precast concrete frame structures includes multiple groups of support units as described above. Two adjacent groups of support units share one group of beam lower support units 1, and the shared group of beam lower support units 1 is the beam lower support unit 1 of the middle beam.

[0104] The present invention is not limited to the foregoing specific implementation manners. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. A support unit applicable to the construction of prefabricated concrete frame structures, characterized in that, It includes multiple groups of beam bottom support units (1) connected in sequence and enclosing to form a chamber, and a composite slab bottom support unit (2) located in the chamber and respectively connected to the multiple groups of beam bottom support units (1); The composite slab bottom support unit (2) includes a bottom support assembly, two groups of composite slab backrest systems (23) installed on the bottom support assembly, and a slab strip backrest system (22) respectively connected to the two groups of composite slab backrest systems (23) and located between the two groups of composite slab backrest systems (23); The slab strip backrest system (22) includes multiple groups of slab strip backrests (221) arranged in parallel and respectively connected to the two groups of composite slab backrest systems (23) at both ends, a formwork backrest assembly (222) for connecting adjacent two groups of slab strip backrests (221), and multiple groups of pads (223) installed on the slab strip backrests (221) and sliding along the length direction of the slab strip backrests (221); The top surface of the pad (223) is on the same plane as the top surface of the slab strip backrest (221); the slab strip backrest (221) is connected to the bottom support assembly.

2. The support unit applicable to the construction of precast concrete frame structures according to claim 1, wherein A formwork installation groove is provided on the slab strip backrest (221), and a chute (2211) is arranged along the rectangle of the slab strip backrest (221), and the pad (223) is located in the formwork installation groove and is in sliding fit with the chute (2211).

3. The support unit applicable to the construction of precast concrete frame structures according to claim 1, wherein The composite slab backrest system (23) includes multiple groups of slab sub-backrests (231) connected to the ends of the slab strip backrests (221) and arranged in one-to-one correspondence with them, and slab main backrests (232) arranged in parallel with the formwork backrest assembly (222) and located between adjacent two groups of slab sub-backrests (231); There are at least two groups of slab main backrests (232) between adjacent two groups of slab sub-backrests (231), and both ends are respectively connected to the slab sub-backrests (231); the slab main backrest (232), slab sub-backrest (231), and slab strip backrest (221) on the side close to the slab strip backrest (221) are connected by a connector A (24), and one end of the slab sub-backrest (231) far from the slab strip backrest (221) and the slab main backrest (232) far from the slab strip backrest (221) are connected by a connector A (24).

4. A support unit applicable to the construction of prefabricated concrete frame structures according to claim 3, characterized in that, The bottom support assembly includes multiple groups of vertical rods (211) and a connecting rod assembly (212) for connecting adjacent two groups of vertical rods (211); the multiple groups of vertical rods (211) are arranged in one-to-one correspondence with the connector A (24) and are connected to the bottom of the connector A (24).

5. The support unit applicable to the construction of prefabricated concrete frame structures according to claim 3, wherein A cantilever is provided on the connector A (24) on the side close to the beam bottom support unit (1).

6. The support unit applicable to the construction of precast concrete frame structures according to claim 3, wherein, The connector A (24) includes a connecting seat A (241) in a cross structure, an insertion tube A (242) connected to the bottom of the connecting seat A (241) and connected to the vertical rod (211), and a C-shaped slot with an opening downward is provided on the connecting seat A (241).

7. A support unit applicable to the construction of precast concrete frame structures according to claim 4, characterized in that, The connecting rod assembly (212) includes an edge restraint triangular brace (2121) located outside the bottom support assembly and used to connect the adjacent outer vertical rods (211), and a horizontal rod located inside the bottom support assembly and used to connect the internal vertical rods (211) to each other.

8. A support unit applicable to the construction of prefabricated concrete frame structures according to claim 7, characterized in that, The edge constraint triangular brace (2121) includes a horizontal connecting rod (21211) arranged horizontally and used to connect two adjacent groups of vertical rods (211), two diagonal braces (21212) respectively hinged to both ends of the horizontal connecting rod (21211), and a back rib connecting plate (21213) arranged horizontally and respectively hinged to the ends of the two diagonal braces (21212) far away from the horizontal connecting rod (21211); The horizontal connecting rod (21211), the diagonal brace (21212), and the horizontal rod are all adjustable in length along their axial directions and have the same structure; The horizontal connecting rod (21211) includes a sleeve and two screw rods respectively screwed to both ends of the sleeve; the thread directions of the two screw rods are opposite.

9. A support unit applicable to the construction of prefabricated concrete frame structures according to any one of claims 3-8, characterized in that, The beam bottom support unit (1) includes a beam bottom support assembly (11) connected to the slab bottom support assembly through a horizontal connecting rod (112), and a beam back rib system (12) installed on the beam bottom support member.

10. The support unit applicable to the construction of prefabricated concrete frame structures according to claim 9, characterized in that, The beam back rib system (12) includes two beam main back ribs (121) arranged parallel to the slab main back rib (232) or the slab secondary back rib (231) and located on the same horizontal plane, a beam secondary back rib (122) used to connect the two beam main back ribs (121), and a connector B (123) used to connect the beam main back rib (121) and the beam bottom support assembly (11).

11. A support unit applicable to the construction of prefabricated concrete frame structures according to claim 10, characterized in that, The beam bottom support assembly (11) includes a vertical rod (111) connected to the connector B (123) and arranged vertically; two adjacent vertical rods (111) are connected through a horizontal connecting rod (112); the adjacent vertical rod (111) and the vertical rod (211) are connected through a horizontal connecting rod (112).

12. The support unit applicable to the construction of precast concrete frame structures according to claim 11, wherein, The connector B has an I-shaped structure and includes a connecting seat B and an inserting tube B installed at the bottom of the connecting seat B; The connecting seat B includes two clamping plates respectively connected to the ends of the beam main back rib and arranged in parallel, and a connecting plate used to connect the two clamping plates; a C-shaped slot B opening downward is provided on the clamping plate.

13. A support system applicable to the construction of prefabricated concrete frame structures, characterized in that, It includes multiple groups of support units as described in any one of claims 1-12, and two adjacent support units share one beam bottom support unit (1).

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