Fabricated concrete frame structure

Abstract

The invention discloses a fabricated concrete frame structure, and relates to the technical field of civil engineering, the fabricated concrete frame structure comprises a prefabricated vertical beam section, and the two ends of the prefabricated vertical beam section are fixedly connected with bearing plates; a reinforcing mechanism is arranged on the surface of the prefabricated vertical beam section and comprises a lower steel supporting rod and an upper steel supporting rod which are symmetrically arranged on the two sides of the prefabricated vertical beam section, and the connecting positions of the lower steel supporting rod and the upper steel supporting rod are connected through middle fasteners. And the other end of the upper steel support rod is mounted on a bearing plate at the top of the prefabricated vertical beam section through an upper fastener. According to the adjustable middle fastener for the upper steel supporting rod and the lower steel supporting rod, the steel supporting rods generate inward elastic contraction deformation through gradual screwing of the second locking bolts, and fastening pressure stress is formed on the prefabricated vertical beam section. The bending rigidity of the beam body is improved, crack development is effectively restrained, the internal structure of the vertical beam is actively pressed and stabilized, damage to the internal structure is reduced, and then better supporting force is kept.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering, and particularly to a prefabricated concrete frame structure. Background Art

[0002] The prefabricated concrete frame structure is an advanced building structure form, featuring high-level industrialized production, integrated design, and building construction. It prefabricates concrete materials into components and then assembles and installs them at the construction site. The prefabricated concrete frame structure means that the main structural components such as beams, slabs, and columns are composed of precast concrete components, and are assembled and installed at the construction site through reliable connection methods to form an integral frame structure. This structural form is widely used in prefabricated buildings.

[0003] The existing passive reinforcement mode is restricted by technical inertia, process limitations, and economic trade-offs. The lack of assembly clearance and pre-tightening force leads to irreversible damage to the structure under dynamic loads. The existing passive reinforcement belongs to a passive force-bearing mode. There is an assembly clearance between the conventional steel strut and the beam body, and the pre-tightening force cannot be applied, resulting in easy micro-displacement accumulation under dynamic loads, affecting the overall seismic performance, and causing the support system to only play a role after the structure deforms to a certain amount (such as beam bending, node cracking). However, the internal structure of the vertical beam is prone to change, resulting in a weakening of the support force. The performance defects of the existing passive reinforcement mode under dynamic loads essentially stem from the interaction between its "passive force-bearing mechanism" and "clearance-hysteresis coupling effect". This coupling effect not only causes visible displacement accumulation on the surface, but also changes the internal structural state of the vertical beam through material damage, stress redistribution, etc., ultimately leading to a decline in the efficiency of the support system. Summary of the Invention

[0004] The purpose of the present invention is to provide a prefabricated concrete frame structure to solve the problems existing in the above background art.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A prefabricated concrete frame structure includes precast vertical beam segments, and bearing plates are fixedly connected to both ends of the precast vertical beam segments. A reinforcement mechanism is arranged on the surface of the precast vertical beam segments:

[0007] The reinforcement mechanism includes lower steel struts and upper steel support rods symmetrically arranged on both sides of the precast vertical beam segments. The connection points of the lower steel struts and the upper steel support rods are connected through middle fasteners. The other end of the upper steel support rod is installed on the bearing plate at the top of the precast vertical beam segment through an upper fastener, and the other end of the lower steel strut is installed on the bearing plate at the bottom of the precast vertical beam segment through a lower fastener;

[0008] By tightening the middle fastener, the upper steel support rod and the lower steel support rod are tightened to achieve the active reinforcement of the precast vertical beam section.

[0009] As a further solution of the present invention: Two groups of the upper steel support rods and the lower steel support rods are provided and are symmetrically arranged.

[0010] As a further solution of the present invention: The reinforcement mechanism further includes a second reinforcement steel plate, which is fixedly installed in the middle of the upper steel support rod and is used to stabilize the upper steel support rod;

[0011] A first reinforcement steel plate, which is fixedly installed in the middle of the lower steel support rod and is used to stabilize the lower steel support rod.

[0012] As a further solution of the present invention: Substrates are welded to the other ends of the bearing plates respectively, which are used to increase the contact area.

[0013] As a further solution of the present invention: It further includes an extended stabilizing beam, which is fixedly installed on the surface of one of the substrates. Fixing blocks are fixedly installed on the surface of the extended stabilizing beam, and reinforcing steel bars are fixedly installed on both sides of the fixing blocks.

[0014] As a further solution of the present invention: One side of the extended stabilizing beam is fixedly connected with a precast cross beam section, and a limiting steel bar is slidably connected in the precast cross beam section. The limiting steel bar slides in the extended stabilizing beam and is stabilized by a fixing buckle and fits against the other side of the extended stabilizing beam.

[0015] As a further solution of the present invention: The bottom of the precast cross beam section is fixedly installed with a fixing plate through fixing bolts, and resistance columns are fixedly connected to the peripheries of the surface of the fixing plate.

[0016] As a further solution of the present invention: The four resistance columns are symmetrically arranged in pairs, and the distances between two resistance columns arranged on the same side are the same, which are used for the limit of the ends of the reinforcing steel bars.

[0017] As a further solution of the present invention: One side of the middle of one of the reinforcing steel bars is in fitting connection with a limiting plate. Connecting bolts are fixedly connected to both sides of the limiting plate, and a clamping buckle is slidably connected to the surface of the connecting bolts. At the same time, the clamping buckle is arranged on one side of the middle of the other reinforcing steel bar. Connecting nuts are threadedly connected to the connecting bolts, and the connecting nuts are in contact with one side of the clamping buckle.

[0018] As a further solution of the present invention: At the same time, it further includes a transverse connecting plate, which is fixedly connected to one side of the other substrate, and a stabilizing connecting plate is fixedly connected to the middle of the transverse connecting plate to enhance the stability of the bottom.

[0019] The beneficial effects of the present invention:

[0020] (1) In the present invention, a symmetrical upper and lower steel strut adjustable middle fastener is adopted. By gradually screwing the locking bolt II, the steel strut generates an inward elastic contraction deformation, forming a fastening compressive stress on the precast vertical beam section. This increases the bending stiffness of the beam body, effectively inhibits the development of cracks, and at the same time actively compresses and stabilizes the internal structure of the vertical beam to reduce damage to the internal structure, thereby maintaining better support force;

[0021] (2) In the present invention, the extended and stable beam and the precast cross beam section are connected by sliding with limit steel bars, and cooperate with triangular arched reinforcement steel bars to form a space truss system. It can still bear the uniform load without the middle support beam, increasing the clear height of the building and saving a large amount of space, effectively improving the space utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the drawings.

[0023] Figure 1 is a schematic three-dimensional structure of the present invention Figure 1 ;

[0024] Figure 2 is a schematic three-dimensional structure of the present invention Figure 2 ;

[0025] Figure 3 is a schematic combined structure diagram of the precast vertical beam section and the reinforcement mechanism in the present invention;

[0026] Figure 4 is a schematic disassembled structure diagram of the precast vertical beam section and the reinforcement mechanism in the present invention;

[0027] Figure 5 is a schematic partial structure of the present invention Figure 1 ;

[0028] Figure 6 is a schematic partial structure of the present invention Figure 2 ;

[0029] Figure 7 is a schematic partial structure of the present invention Figure 3 ;

[0030] Figure 8 is Figure 7 an enlarged view of part A in

[0031] In the figure: 1, horizontal connecting plate; 2, precast vertical beam section; 3, base plate; 4, bearing plate; 5, reinforcement mechanism; 500, lower steel strut; 501, lower end locking plate; 502, first locking bolt; 503, first locking nut; 504, middle locking plate; 505, second locking bolt; 506, second locking nut; 507, first reinforcement steel plate; 508, upper steel support rod; 509, second reinforcement steel plate; 510, upper end locking plate; 511, third locking bolt; 512, third locking nut; 6, precast cross beam section; 7, fixing block; 8, reinforcement steel bar; 9, extended stabilizing beam; 10, limiting steel bar; 11, fixing buckle; 12, fixing plate; 13, fixing bolt; 14, resistance column; 15, limiting plate; 16, connecting bolt; 17, clamping buckle; 18, connecting nut; 19, stabilizing connecting plate. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] Embodiment 1

[0034] Please refer to Figures 1 - 8 As shown in the figure, the present invention is an assembled concrete frame structure, including a precast vertical beam section 2. Both ends of the precast vertical beam section 2 are fixedly connected with a bearing plate 4, and a reinforcement mechanism 5 is arranged on the surface of the precast vertical beam section 2:

[0035] The reinforcement mechanism 5 includes a lower steel strut 500 and an upper steel support rod 508 symmetrically arranged on both sides of the precast vertical beam section 2. The connection part of the lower steel strut 500 and the upper steel support rod 508 is connected through a middle fastener. The other end of the upper steel support rod 508 is installed on the bearing plate 4 at the top of the precast vertical beam section 2 through an upper fastener, and the other end of the lower steel strut 500 is installed on the bearing plate 4 at the bottom of the precast vertical beam section 2 through a lower fastener;

[0036] The middle fastener includes two symmetrically arranged middle locking plates 504, a second locking bolt 505, and a second locking nut 506. The second locking nut 506 is threadedly connected with the second locking bolt 505 and is arranged on one side of the middle locking plate 504. The middle locking plate 504 is arranged at the connection part of the lower steel strut 500 and the upper steel support rod 508;

[0037] The upper fastener includes an upper end locking plate 510, a locking bolt III 511, and a locking nut III 512. There are two upper end locking plates 510, which are symmetrically arranged on both sides of one of the bearing plates 4. The locking nut III 512 is threadedly connected to the locking bolt III 511 and is arranged on one side of one of the upper end locking plates 510. The locking bolt III 511 rotates within the bearing plate 4 and also rotates within the upper steel support rod 508;

[0038] The lower fastener includes a lower end locking plate 501, a locking bolt I 502, and a locking nut I 503. There are two lower end locking plates 501, which are symmetrically arranged on both sides of the other bearing plate 4. The locking nut I 503 is threadedly connected to the locking bolt I 502 and is arranged on one side of one of the lower end locking plates 501. The locking bolt I 502 rotates within the bearing plate 4 and also rotates within the lower steel support rod 500;

[0039] By tightening the middle fastener, the upper steel support rod 508 and the lower steel support rod 500 are tightened to achieve the active reinforcement of the precast vertical beam section 2.

[0040] It should be noted that the lower steel support rod 500 and the lower steel support rod 500 are in contact and are tightened by the middle fastener so that the gap between them is greater than the diameter of the locking bolt II 505 to avoid interference.

[0041] In the present invention, preferably, there are two sets of upper steel support rods 508 and they are symmetrically arranged.

[0042] In the present invention, preferably, the reinforcement mechanism 5 further includes a second reinforcement steel plate 509, which is fixedly installed in the middle of the upper steel support rod 508 for stabilizing the upper steel support rod 508;

[0043] A first reinforcement steel plate 507, which is fixedly installed in the middle of the lower steel support rod 500 for stabilizing the lower steel support rod 500.

[0044] In the present invention, preferably, substrates 3 are welded to the other ends of the bearing plates 4 to increase the contact area.

[0045] During the implementation process, first place the two sets of upper steel support rods 508 on both sides of the top bearing plate 4, fit the two upper end locking plates 510 to the ends of the two sets of upper steel support rods 508, pass the locking bolt III 511 through the bearing plate 4, the upper steel support rod 508, and the upper end locking plate 510, thread the locking nut III 512 with the locking bolt III 511, and tilt the two sets of upper steel support rods 508. At this time, do not fully tighten the locking nut III 512 to allow a certain amount of movement space for the upper steel support rod 508;

[0046] Place two sets of lower steel struts 500 on both sides of the bottom bearing plate 4. Fit two lower end locking plates 501 to the ends of the two sets of lower steel struts 500. Pass the first locking bolt 502 through the bearing plate 4, the lower steel strut 500, and the lower end locking plate 501. Thread the first locking bolt 502 with the first locking nut 503, and make the inclination angles of the two sets of lower steel struts 500 and the two sets of upper steel support struts 508 the same. At this time, do not fully tighten the first locking nut 503 to allow the lower steel strut 500 to have a certain amount of movement space;

[0047] At this time, place two middle locking plates 504 on one side of the connection between the two sets of upper steel support struts 508 and the lower steel struts 500. Pass the first locking bolt 502 through both sides of the two middle locking plates 504 and thread it with the second locking nut 506. Tighten the second locking nut 506 to make the two sets of upper steel support struts 508 and the lower steel struts 500 contract inward and closely adhere to the surface of the precast vertical beam section 2. When the second locking nut 506 is fully tightened, fully tighten the first locking nut 503 and the third locking nut 512 to prevent loosening. Cut the excess first locking bolt 502 with an external tool to improve the aesthetics;

[0048] Enable the precast vertical beam section 2 to be reinforced during support, and it is not passive reinforcement. At the same time, it can closely adhere to the surface of the precast vertical beam section 2, thereby making the internal structure of the precast vertical beam section 2 more stable, avoiding traditional passive reinforcement, being unable to fasten the internal structure of the precast vertical beam section 2, and resulting in a poor stability effect of the precast vertical beam section 2.

[0049] Embodiment 2

[0050] In the present invention, preferably, it further includes an extended stabilizing beam 9, which is fixedly installed on the surface of one of the base plates 3. A fixed block 7 is fixedly installed on the surface of the extended stabilizing beam 9, and reinforcing steel bars 8 are fixedly installed on both sides of the fixed block 7.

[0051] In the present invention, preferably, one side of the extended stabilizing beam 9 is fixedly connected to a precast cross beam section 6, and a limiting steel bar 10 is slidably connected inside the precast cross beam section 6. The limiting steel bar 10 slides inside the extended stabilizing beam 9 and is stabilized by a fixed buckle 11 and adheres to the other side of the extended stabilizing beam 9.

[0052] It should be noted that a connection hole for the sliding of the limiting steel bar 10 is provided at the connection between the precast cross beam section 6 and the extended stabilizing beam 9 to facilitate the passing through of the limiting steel bar 10 for connection;

[0053] The connection method between the fixed buckle 11 and the limiting steel bar 10 is specifically welding, which can effectively prevent the limiting steel bar 10 from moving and affecting the stability.

[0054] In the present invention, preferably, a fixing plate 12 is fixedly installed at the bottom of the precast crossbeam section 6 through fixing bolts 13, and resistance columns 14 are fixedly connected to the peripheries of the surfaces of the fixing plate 12.

[0055] In the present invention, preferably, the four resistance columns 14 are symmetrically arranged in pairs, and the distances between two resistance columns 14 arranged on the same side are the same, which are used for strengthening the limit of the end part of the reinforcing bar 8.

[0056] In the present invention, preferably, on one side of the middle part of one of the reinforcing bars 8, a limiting plate 15 is attached and connected. On both sides of the limiting plate 15, connecting bolts 16 are fixedly connected. A clamping buckle 17 is slidably connected to the surface of the connecting bolt 16. At the same time, the clamping buckle 17 is arranged on one side of the middle part of the other reinforcing bar 8. A connecting nut 18 is threadedly connected to the connecting bolt 16, and the connecting nut 18 is attached to one side of the clamping buckle 17.

[0057] In the present invention, preferably, a transverse connecting plate 1 is further included, which is fixedly connected to one side of the other substrate 3, and a stabilizing connecting plate 19 is fixedly connected to the middle of the transverse connecting plate 1 to enhance the stability of the bottom.

[0058] During the implementation process, first place the precast crossbeam section 6 in the middle of one side of the extended stabilizing beam 9. Pass the limiting reinforcing bar 10 through the precast crossbeam section 6 and the extended stabilizing beam 9 to stabilize the precast crossbeam section 6. Sleeve the fixing buckle 11 on the limiting reinforcing bar 10 and weld it to prevent the limiting reinforcing bar 10 from moving. Tighten the fixing plate 12 to the bottom of the precast crossbeam section 6 through the fixing bolts 13. Weld the fixing block 7 to the extended stabilizing beam 9, and weld the two reinforcing bars 8 to both sides of the fixing block 7, so that the two fixing blocks 7 are closely attached to the outside of the resistance columns 14;

[0059] Pass the limiting plate 15 with the two connecting bolts 16 through the upper and lower sides of the two fixing blocks 7. Pass the clamping buckle 17 through the connecting bolt 16 and tighten it with the connecting nut 18, so that the middle parts of the two fixing blocks 7 are bent inward to support the bottom of the precast crossbeam section 6;

[0060] When installing the precast crossbeam section 6, there is no need to add an additional support beam in the middle, which can effectively improve the usable space of the concrete frame structure. And through the triangular arch setting of the reinforcing bar 8, the support of the precast crossbeam section 6 can be effectively improved, and the support effect of the precast crossbeam section 6 can be better.

[0061] The above has described the embodiments of the present invention in detail, but the content described is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An assembled concrete frame structure, characterized in that: It comprises a prefabricated vertical beam section (2), both ends of which are fixedly connected to a pressure-bearing plate (4), and a reinforcement mechanism (5) is provided on the surface of the prefabricated vertical beam section (2): The reinforcement mechanism (5) comprises a lower steel support rod (500) and an upper steel support rod (508) symmetrically arranged on both sides of the prefabricated vertical beam section (2); the junction of the lower steel support rod (500) and the upper steel support rod (508) is connected by a middle fastener; the other end of the upper steel support rod (508) is installed on the pressure plate (4) at the top of the prefabricated vertical beam section (2) by the upper fastener; and the other end of the lower steel support rod (500) is installed on the pressure plate (4) at the bottom of the prefabricated vertical beam section (2) by the lower fastener; By locking the middle fastener, the upper steel support rod (508) and the lower steel support rod (500) are tightened to achieve active reinforcement of the prefabricated vertical beam section (2).

2. The assembled concrete frame structure according to claim 1, characterized in that: The upper steel support rods (508) and the lower steel support rods (500) are each provided with two groups and are symmetrically arranged.

3. The assembled concrete frame structure according to claim 1, characterized in that: The reinforcement mechanism (5) further comprises a second reinforcement steel plate (509) which is fixedly mounted on the middle part of the upper steel support rod (508) and is used to stabilize the upper steel support rod (508); A reinforcing steel plate 1 (507) is fixedly installed at the middle of the lower steel support rod (500) to stabilize the lower steel support rod (500).

4. The assembled concrete frame structure according to claim 1, characterized in that: The other end of the pressure-bearing plate (4) is welded with a base plate (3) to increase the contact area.

5. The assembled concrete frame structure according to claim 4, characterized in that: It also comprises an extended stabilizing beam (9) fixedly mounted on the surface of one of the base plates (3); a fixed block (7) is fixedly mounted on the surface of the extended stabilizing beam (9); and reinforcing steel bars (8) are fixedly mounted on both sides of the fixed block (7).

6. The assembled concrete frame structure according to claim 5, characterized in that: A prefabricated cross beam section (6) is fixedly connected to one side of the extended stabilizing beam (9), and a limiting steel bar (10) is slidably connected inside the prefabricated cross beam section (6). The limiting steel bar (10) slides inside the extended stabilizing beam (9) and is stabilized by a fixing buckle (11) and fits to the other side of the extended stabilizing beam (9).

7. The assembled concrete frame structure according to claim 6, characterized in that: A fixing plate (12) is fixedly mounted on the bottom of the prefabricated cross beam section (6) via fixing bolts (13), and resistance columns (14) are fixedly connected to the four sides of the surface of the fixing plate (12).

8. The assembled concrete frame structure according to claim 7, characterized in that: The four resistance columns (14) are symmetrically arranged in pairs, and the distance between two resistance columns (14) arranged on the same side is the same, so as to reinforce the position limitation of the end of the steel bar (8).

9. The assembled concrete frame structure according to claim 8, characterized in that: One side of the middle part of one of the reinforcing steel bars (8) is fitted and connected with a limiting plate (15), both sides of the limiting plate (15) are fixedly connected with connecting bolts (16), and the surface of the connecting bolts (16) is slidably connected with a clamping buckle (17), and the clamping buckle (17) is arranged on one side of the middle part of another reinforcing steel bar (8), and a connecting nut (18) is threadedly connected to the connecting bolt (16), and the connecting nut (18) is fitted with one side of the clamping buckle (17).

10. The assembled concrete frame structure according to claim 1, characterized in that: It also includes a transverse connecting plate (1) fixedly connected to one side of another base plate (3), and the middle part of the transverse connecting plate (1) is fixedly connected to a stable connecting plate (19) to enhance the stability of the bottom.

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