Integrated connection node of main and secondary beams of assembled concrete frame structure

Abstract

The present invention relates to an integrated connection node of the main and secondary beams of an assembled concrete frame structure; a stress-bearing steel cage is arranged inside the load-bearing column, and a cap steel cage is arranged outside the stress-bearing steel cage; the load-bearing column is connected to the main beam by connecting bolts passing through the cap, a beam-interconnecting connector is pre-embedded in the middle of the main beam, and the pre-embedded beam-interconnecting connector is fixed together with the main beam steel cage inside the main beam; a bottom plate connecting support bar is pre-embedded at the upper end of the main beam; secondary beam fixing plates are pre-embedded at the left and right ends of the secondary beam, and the tail of the secondary beam fixing plate is connected to the stress-bearing steel cage inside the secondary beam, and the secondary beam fixing plate is fixed together with the beam-interconnecting connector by bolt connection to connect the main beam to the secondary beam. The present invention has a high degree of assembly, convenient construction and installation, less wet operation, excellent stress performance, and clear force transmission; while ensuring the rigidity of the concrete frame structure, it is easy to mass produce and assemble on site, thereby improving on-site construction efficiency.

Description

Technical Field

[0001] The invention relates to an integrated connection node for primary and secondary beams of an assembled concrete frame structure, and belongs to the technical field of building industrialization and assembled concrete frame structure construction. Background Art

[0002] Prefabricated structures can save energy, water, and materials, significantly reduce construction waste, reduce noise pollution, reduce labor and intensity, effectively improve the construction environment, and improve project quality. They are structures worthy of vigorous promotion. Prefabricated frame shear wall structure is one of the most important structural forms, and is currently being vigorously developed at home and abroad. However, how to ensure the safety of prefabricated structures under strong earthquakes is a challenging problem. The difficulty lies in how to ensure the reliability and convenience of the connection between prefabricated structural modules, and how to enhance the stability of prefabricated structures. Although some of the current prefabricated shear walls can achieve reliability and convenience of connection through various construction methods, most of them have poor reliability and convenience, and it is difficult to effectively ensure the safety of the structure under strong earthquakes. Therefore, the research and development of integrated connection nodes for primary and secondary beams of prefabricated concrete frame structures is both urgent and particularly meaningful. Summary of the invention

[0003] In order to solve the problems of poor connection reliability between prefabricated structural modules and poor stability performance of frame structure connection nodes, the present invention provides an integrated connection node for primary and secondary beams of an assembled concrete frame structure.

[0004] The technical solution adopted by the present invention is as follows:

[0005] The integrated connection nodes of the main and secondary beams of the assembled concrete frame structure include load-bearing columns, caps, main beams, secondary beams, bolts, beam connectors, secondary beam fixing plates, cap steel cages, bottom plate connection reinforcements, bolt holes, stress steel cages, main beam steel cages, and reserved installation slots;

[0006] A stress-bearing steel cage is arranged inside the load-bearing column; a cap steel cage is arranged equidistantly from bottom to top outside the stress-bearing steel cage; the cap is connected to the load-bearing column through the cap steel cage bound to the stress-bearing steel cage, and bolt through holes are reserved on the upper side of the cap;

[0007] The inter-beam connector is embedded in the middle of the main beam, and the embedded inter-beam connector is fixed together with the main beam reinforcement cage arranged inside the main beam; the bottom plate connection reinforcement is embedded in the upper end of the main beam, and the bolt through holes reserved at the left and right ends of the main beam match the positions of the bolt through holes on the upper side of the pedestal; the pedestal and the main beam are connected by bolts passing through the reserved bolt through holes of the two;

[0008] Secondary beam fixing plates are embedded in the left and right ends of the secondary beam, the tail of the secondary beam fixing plate is connected to the fixing sleeve and connected to the load-bearing steel cage inside the secondary beam, and the secondary beam fixing plate is fixed together with the inter-beam connecting piece by bolt connection, thereby connecting the main beam and the secondary beam.

[0009] It is further described that the main beam reinforcement cage is composed of bent steel bars, straight steel bars, reinforced stirrups and ordinary stirrups; a bent section is added in the middle of the bent steel bars arranged on the upper layer of the main beam reinforcement cage, and straight steel bars are arranged normally on the lower layer. The added bent section is fixed by reinforced stirrups, and the non-bent section is fixed by ordinary stirrups; the added bent section is trapezoidal and a reserved installation groove is formed by pouring concrete.

[0010] It is further described that the inter-beam connecting parts are composed of a support frame, a support web, a support wing plate, and a secondary beam fixing groove, wherein three support frames are arranged on the lower side of the support web, the support frame body is a hollow ring, and its inner diameter size matches the outer diameter of the steel cage of the bent section on the lower side of the reserved installation groove, and the upper side of the frame body is prefabricated together with the bottom of the support web; the support wing plates are connected to the left and right sides of the support web, and bolt holes are arranged along the longitudinal direction of the support web; the bottom surface of the support wing plate is aligned with the top surface of the support web, and a secondary beam fixing groove is formed.

[0011] It is further described that: the inter-beam connector is arranged in the reserved installation groove on the upper side of the main beam steel cage; the support frame body is externally mounted in the additional bending section of the main beam steel cage, the support wing plate is externally mounted on the main beam steel cage, and the support web is closely attached to the outer edge of the bent steel bar; finally, concrete is poured externally to form a whole.

[0012] It is further described that the secondary beam fixing plate consists of two parts, an outwardly extending fixing plate and a fixing sleeve; the bolt holes arranged on the upper side of the outwardly extending fixing plate match the supporting web; the inner diameter of the fixing sleeve matches the outer diameter of the stressed steel cage; the secondary beam fixing plates are arranged at the left and right ends of the secondary beam, and the fixing sleeve is fixed together with the stressed steel cage.

[0013] Further, the outwardly extending fixing plate on the secondary beam fixing plate is arranged in the reserved installation groove, and the lower end surface of the secondary beam fixing plate is close to the secondary beam fixing groove; bolts fix the outwardly extending fixing plate and the supporting web together.

[0014] The present invention has a high degree of assembly, is convenient for construction and installation, requires less wet work, has excellent stress-bearing performance, and has clear force transmission. It ensures the rigidity of the concrete frame structure while facilitating mass production and on-site assembly, improves on-site construction efficiency, and effectively solves the problems of difficult assembly positioning and unreliable node connections in assembled connections, thereby ensuring the reliability of connections at the nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the integrated connection node structure of the primary and secondary beams of the prefabricated concrete frame structure;

[0016] Figure 2 It is a schematic diagram of the assembled concrete frame structure;

[0017] Figure 3 It is a schematic diagram of the load-bearing column structure;

[0018] Figure 4 It is a schematic diagram of the connection between the stress-bearing steel cage and the cap steel cage;

[0019] Figure 5 This is a schematic diagram of the main beam reinforcement cage structure;

[0020] Figure 6 It is a schematic diagram of the structure of the connecting parts between beams;

[0021] Figure 7 for Figure 6 Front view;

[0022] Figure 8 This is a schematic diagram of the connection between the beam connector and the main beam reinforcement cage;

[0023] Fig. 9 It is a schematic diagram of the connection between the beam connector and the main beam;

[0024] Fig.10 It is a schematic diagram of the secondary beam fixing plate structure;

[0025] Fig.11 It is a schematic diagram of the connection between the secondary beam fixing plate and the secondary beam;

[0026] Fig.12 It is a schematic diagram of the connection between the secondary beam fixing plate and the connecting piece between beams;

[0027] In the figure: 1 is a load-bearing column; 2 is a cap; 3 is a main beam; 4 is a secondary beam; 5 is a bolt; 6 is a connecting piece between beams; 7 is a secondary beam fixing plate; 8 is a cap steel cage; 9 is a bottom plate connecting support bar; 10 is a bolt hole; 11 is a stress steel cage; 12 is a main beam steel cage; 13 is a reserved installation slot;

[0028] 6-1 is a support frame; 6-2 is a support web; 6-3 is a support flange; 6-4 is a secondary beam fixing slot;

[0029] 7-1 is an outwardly extending fixed plate; 7-2 is a fixed sleeve; 12-1 is a bent steel bar; 12-2 is a straight steel bar; 12-3 is a reinforcing stirrup;

[0030] 12-4 is ordinary stirrup. DETAILED DESCRIPTION

[0031] In order to further illustrate the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0032] from Figure 1-Figure 12It can be seen that the integrated connection node of the main and secondary beams of the assembled concrete frame structure includes a load-bearing column 1, a cap 2, a main beam 3, a secondary beam 4, a bolt 5, a beam connector 6, a secondary beam fixing plate 7, a cap steel cage 8, a bottom plate connecting support 9, a bolt hole 10, a stress steel cage 11, a main beam steel cage 12, and a reserved installation groove 13; the stress steel cage 11 is arranged inside the load-bearing column 1; the cap steel cage 8 is arranged equidistantly from bottom to top outside the stress steel cage 11; the cap 2 is connected to the load-bearing column 1 through the cap steel cage 8 bound to the stress steel cage 11, and bolt through holes are reserved on the upper side of the cap 2;

[0033] A beam connector 6 is embedded in the middle of the main beam 3, and the embedded beam connector 6 is fixed to the main beam reinforcement cage 12 arranged inside the main beam; a bottom plate connection support bar 9 is embedded in the upper end of the main beam, and bolt through holes are reserved at the left and right ends of the main beam 3 to match the positions of the bolt through holes on the upper side of the cap 2; the cap 2 and the main beam 3 are connected by bolts passing through the bolt through holes reserved in both.

[0034] Secondary beam fixing plates 7 are embedded in the left and right ends of the secondary beam 4. The tail of the secondary beam fixing plate 7 is connected to the fixing sleeve and connected to the stress-bearing steel cage 11 inside the secondary beam. The secondary beam fixing plate 7 is fixed together with the inter-beam connecting piece 6 by bolts 5, thereby connecting the main beam 3 and the secondary beam 4.

[0035] The main beam steel cage 12 is composed of bent steel bars 12-1, straight steel bars 12-2, reinforced stirrups 12-3, and ordinary stirrups 12-4; a bent section is added in the middle of the bent steel bars 12-1 arranged on the upper layer of the main beam steel cage 12, and straight steel bars 12-2 are arranged normally on the lower layer. The additional bent section is fixed by reinforced stirrups 12-3, and the non-bent section is fixed by ordinary stirrups 12-4; the additional bent section is trapezoidal and a reserved installation groove 13 is formed by pouring concrete.

[0036] The inter-beam connector 6 is composed of a support frame 6-1, a support web 6-2, a support wing plate 6-3, and a secondary beam fixing groove 6-4, wherein three support frames 6-1 are arranged on the lower side of the support web 6-2, the support frame 6-1 frame body is a hollow ring, and its inner diameter size matches the outer diameter of the steel cage of the bent section at the lower side of the reserved installation groove 13, and the upper side of the frame body is prefabricated together with the bottom of the support web 6-2; the left and right sides of the support web 6-2 are connected to the support wing plates 6-3, and bolt holes 10 are arranged along the longitudinal direction of the support web 6-2; the bottom surface of the support wing plate 6-3 is aligned with the top surface of the support web 6-2, and a secondary beam fixing groove 6-4 is formed;

[0037] The inter-beam connector 6 is arranged in the reserved installation groove 13 on the upper side of the main beam steel cage 12; the support frame 6-1 is externally mounted in the additional bending section of the main beam steel cage 12, the support wing plate 6-3 is externally mounted on the main beam steel cage 12, and the support web 6-2 is closely attached to the outer edge of the bent steel bar 12-1; finally, concrete is poured externally to form a whole.

[0038] The secondary beam fixing plate 7 is composed of two parts: an extended fixing plate 7-1 and a fixed sleeve 7-2; the bolt holes 10 arranged on the upper side of the extended fixing plate 7-1 match the supporting web 6-2; the inner diameter of the fixed sleeve 7-2 matches the outer diameter of the stressed steel cage 11; the secondary beam fixing plate 7 is arranged at the left and right ends of the secondary beam 4, and the fixed sleeve 7-2 is fixed together with the stressed steel cage 11.

[0039] The following description states: the outwardly extending fixing plate 7-1 on the secondary beam fixing plate 7 is arranged in the reserved installation groove 13, and the lower end surface of the secondary beam fixing plate 7 is close to the secondary beam fixing groove 6-4; the bolts 5 fix the outwardly extending fixing plate 7-1 and the supporting web 6-2 together.

Claims

1. The integrated connection node of primary and secondary beams of the assembled concrete frame structure is characterized by: The connection node comprises a load-bearing column (1), a cap (2), a main beam (3), a secondary beam (4), bolts (5), a beam connector (6), a secondary beam fixing plate (7), a cap steel cage (8), a bottom plate connecting support bar (9), bolt holes (10), a stress-bearing steel cage (11), a main beam steel cage (12), and a reserved installation groove (13); A plurality of stress-bearing steel cages (11) are evenly arranged inside the load-bearing column (1), and a cap steel cage (8) is evenly arranged outside the stress-bearing steel cage (11) from bottom to top, and the cap (2) is connected to the load-bearing column (1) through the cap steel cage (8) bound to the stress-bearing steel cage (11), and bolt through holes are reserved on the upper side of the cap (2); A beam connecting piece (6) is embedded in the middle of the main beam (3), and the embedded beam connecting piece (6) is fixed together with a main beam reinforcement cage (12) arranged inside the main beam; a bottom plate connecting support bar (9) is embedded in the upper end of the main beam, and bolt through holes are reserved at the left and right ends of the main beam (3) to match the positions of the bolt through holes on the upper side of the pedestal (2); the pedestal (2) and the main beam (3) are connected by bolts (5) passing through the bolt through holes reserved in both. Secondary beam fixing plates (7) are embedded at the left and right ends of the secondary beam (4); the tail of the secondary beam fixing plate (7) is connected to the stress-bearing steel cage (11) inside the secondary beam through a fixing sleeve (7-2); the secondary beam fixing plate (7) is fixed to the beam connecting piece (6) through bolts (5), thereby connecting the main beam (3) and the secondary beam (4); The main beam steel cage (12) is composed of bent steel bars (12-1), straight steel bars (12-2), reinforcing stirrups (12-3) and common stirrups (12-4); A curved section is added in the middle of the curved steel bars (12-1) arranged on the upper layer of the main beam steel cage (12), and straight steel bars (12-2) are arranged normally on the lower layer. The curved section is fixed by reinforcing stirrups (12-3), and the non-curved section is fixed by ordinary stirrups (12-4); the curved section is trapezoidal and a reserved installation groove (13) is formed by pouring concrete. The beam connecting member (6) is composed of a support frame (6-1), a support web (6-2), a support flange (6-3), and a secondary beam fixing groove (6-4), wherein three support frames (6-1) are arranged on the lower side of the support web (6-2), the support frame (6-1) is a hollow ring, the inner diameter of which matches the outer diameter of the steel cage of the bent section at the lower side of the reserved installation groove (13), and the upper side of the frame is prefabricated with the bottom of the support web (6-2); The left and right sides of the supporting web (6-2) are connected to the supporting wing plates (6-3), and bolt holes (10) are arranged longitudinally along the supporting web (6-2); the bottom surface of the supporting wing plate (6-3) is aligned with the top surface of the supporting web (6-2), and a secondary beam fixing groove (6-4) is formed.

2. The integrated connection node of primary and secondary beams of the assembled concrete frame structure according to claim 1 is characterized in that: The inter-beam connector (6) is arranged in a reserved installation groove (13) on the upper side of the main beam steel cage (12); the support frame (6-1) is placed outside the additional curved section of the main beam steel cage (12); the support wing plate (6-3) is placed outside the main beam steel cage (12); and the support web plate (6-2) is closely attached to the outer edge of the curved steel bar (12-1); and finally, concrete is poured outside to form a whole.

3. The integrated connection node of primary and secondary beams of the assembled concrete frame structure according to claim 1 is characterized in that: The secondary beam fixing plate (7) is composed of two parts: an outwardly extending fixing plate (7-1) and a fixing sleeve (7-2); the bolt holes (10) arranged on the upper side of the outwardly extending fixing plate (7-1) are positioned to match the supporting web (6-2); the inner diameter of the fixing sleeve (7-2) matches the outer diameter of the stressed steel cage (11); the secondary beam fixing plate (7) is arranged at the left and right ends of the secondary beam (4), and the fixing sleeve (7-2) is fixed to the stressed steel cage (11).

4. The integrated connection node of primary and secondary beams of the assembled concrete frame structure according to claim 1 is characterized in that: The outwardly extending fixing plate (7-1) on the secondary beam fixing plate (7) is arranged in the reserved installation groove (13), and the lower end surface of the secondary beam fixing plate (7) is closely attached to the secondary beam fixing groove (6-4); bolts (5) fix the outwardly extending fixing plate (7-1) and the supporting web (6-2) together.

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