A fabricated concrete frame structure

Abstract

This application discloses a prefabricated concrete frame structure, relating to the field of prefabricated buildings. It includes a column structure and a main beam. The main beam comprises a precast main beam body and a cast-in-place main beam body. The cast-in-place main beam body includes a main body and a connecting part. The main body is located above the precast main beam body and is integrally connected to it. The connecting part is connected to the column structure. The column structure includes an upper precast column, a lower precast column, and a joint grouting layer. A joint is formed between the lower end face of the upper precast column and the upper surface of the connecting part. The joint grouting layer fills the joint. The lower surface of the connecting part is connected to the upper end face of the lower precast column. A grouting sleeve is provided at the lower end of the upper precast column, and the grouting sleeve is sleeved and connected to the vertical reinforcement of the lower precast column. A connecting protrusion is provided on the lower surface of the joint grouting layer, and a connecting groove adapted to the connecting protrusion is provided on the upper surface of the connecting part. The connecting protrusion is embedded in the connecting groove. This application strengthens the connection between the upper precast column and the main beam in prefabricated buildings.

Description

Technical Field

[0001] This application relates to the field of prefabricated buildings, and in particular to a prefabricated concrete frame structure. Background Technology

[0002] Prefabricated concrete buildings involve prefabricating reinforced concrete beams, columns, walls, and floor slabs in a factory, then transporting them to the construction site for assembly and connection, which can greatly improve the construction efficiency of buildings.

[0003] In the installation of the frame structure of prefabricated buildings, the overall installation follows the sequence of columns first, then beams. For prefabricated columns aligned vertically and connected to the same main beam, the lower prefabricated column is defined as the lower prefabricated column, and the upper prefabricated column is defined as the upper prefabricated column. During the installation of the upper prefabricated column, the upper and lower prefabricated columns are connected by grouting through vertical reinforcing bars and grouting sleeves. The upper prefabricated column is connected to the main beam through joint grouting filler. A relatively strong connection is formed between the upper and lower prefabricated columns. However, although the upper prefabricated column is connected to the main beam through joint grouting filler, the bonding strength between the concrete poured at different times—the joint grouting filler, the main beam, and the upper prefabricated column—is relatively weak because the concrete was poured at different times. Summary of the Invention

[0004] To address the issue of relatively weak connection strength between the precast columns and the main beams, this application provides a prefabricated concrete frame structure.

[0005] This application provides a prefabricated concrete frame structure using the following technical solution:

[0006] A prefabricated concrete frame structure includes column structures and main beams. The main beams include precast main beam bodies and cast-in-place main beam bodies. The cast-in-place main beam bodies include a main body and a connecting part. The main body is located above the precast main beam bodies and is integrally connected to them. The connecting part is connected to the column structure. The column structure includes an upper precast column, a lower precast column, and a joint grouting layer. A joint is formed between the lower end face of the upper precast column and the upper surface of the connecting part. The joint grouting layer fills the joint. The lower surface of the connecting part is connected to the upper end face of the lower precast column. A grouting sleeve is provided at the lower end of the upper precast column. The grouting sleeve is sleeved and connected to the vertical reinforcing bars of the lower precast column. A connecting protrusion is provided on the lower surface of the joint grouting layer. A connecting groove adapted to the connecting protrusion is provided on the upper surface of the connecting part. The connecting protrusion is embedded in the connecting groove.

[0007] By adopting the above technical solution, the main beam is already connected to the lower precast column before the upper precast column is installed. During the installation of the upper precast column, the upper and lower precast columns are aligned vertically. A joint is reserved between the lower end face of the upper precast column and the upper surface of the connection part of the main beam. A joint grouting layer is formed by injecting grout into the grouting sleeve and the joint. This joint grouting layer and the solidified grout inside the grouting sleeve form a whole. After the joint grouting layer solidifies, a connecting protrusion forms on the lower surface. This connecting protrusion is embedded in the connecting groove, providing a mechanical connection between the upper precast column and the main beam in addition to the bonding effect between the concrete, thus strengthening the connection between them. The connecting groove is formed during the casting of the main beam. By setting corresponding connecting groove model block structures at the corresponding positions of the main beam's cast-in-place body, a connecting groove structure can be formed on the upper surface of the main beam's cast-in-place body.

[0008] Optionally, the connecting protrusion has a frustum structure, and the upper diameter of the connecting protrusion is smaller than the lower diameter.

[0009] By adopting the above technical solution, the upper diameter of the connecting protrusion is smaller than the lower diameter. Under the premise that the shape of the connecting groove is adapted to the connecting protrusion, the connecting protrusion and the connecting groove can form a snap-fit ​​effect. This also forms a snap-fit ​​effect between the joint grouting layer and the main beam precast body, while the joint grouting layer is fixedly connected to the upper precast column. Thus, the upper precast column and the main beam precast body can transfer the load along the vertical direction, which can increase the pull-out resistance of the connecting column under vibration.

[0010] Optionally, the connecting protrusion has a cubic structure, with snap-fit ​​protrusions protruding on two opposite sides of the connecting protrusion, and snap-fit ​​grooves adapted to the snap-fit ​​protrusions being recessed on the two opposite inner walls of the connecting groove.

[0011] By adopting the above technical solution, the snap-fit ​​protrusions on both sides of the connecting protrusion form a snap-fit ​​action with the corresponding snap-fit ​​grooves, enabling a snap-fit ​​action between the connecting protrusion and the connecting groove. This also creates a snap-fit ​​action between the joint grouting layer and the main beam precast body, while the joint grouting layer is fixedly connected to the upper precast column. This allows the upper precast column and the main beam precast body to transfer vertical loads, increasing the tensile strength of the connecting column during vibration. The model block used to form the connecting groove can be configured as a multi-component assembly structure spliced ​​along the horizontal direction. When removing the model block from the connecting groove, first remove the middle component of the model block, and then remove the component of the corresponding snap-fit ​​protrusion.

[0012] Optionally, the snap-fit ​​protrusion is frustum-shaped, with the larger end of the snap-fit ​​protrusion close to the connecting protrusion.

[0013] By adopting the above technical solution, the snap-fit ​​protrusion is set as a frustum shape with the small end away from the connecting protrusion, which helps to increase the connection strength between the snap-fit ​​protrusion and the connecting protrusion, and makes it easier for the components of the model block to come out of the snap-fit ​​groove.

[0014] Optionally, a chamfered transition surface is provided between the outer peripheral surface of the connecting protrusion and the surface of the joint grouting layer.

[0015] By adopting the above technical solution, the outer peripheral surface of the connecting protrusion and the surface of the joint grout are transitioned by a chamfered transition surface, which helps to reduce the cracking caused by stress concentration at the corner between the connecting protrusion and the joint grout.

[0016] Optionally, the vertical reinforcing bars of the lower precast column are vertically fixed with support rods, and one end of each support rod is fixedly connected to a sealing ring surrounding the joint grouting layer. The outer circumference of the sealing ring is detachably surrounded by a rubber sealing strip, the upper edge of the rubber sealing strip abuts against the upper precast column, and the lower edge of the rubber sealing strip abuts against the upper surface of the main body.

[0017] By adopting the above technical solution, the sealing ring and the upper precast column together serve as the carrier surrounding the rubber sealing strip. The upper edge of the rubber sealing strip abuts against the outer circumference of the upper precast column, and the lower edge abuts against the upper surface of the main beam, thereby sealing the joint between the upper precast column and the main beam. Compared with sealing the joint with mortar, this method can improve the sealing efficiency of the joint between the precast column and the main beam. On the other hand, using the sealing ring instead of mortar can increase the volume of the joint grouting layer, thereby strengthening the connection between the joint grouting layer and the upper precast column and the main beam.

[0018] Optionally, the rubber sealing strip is provided with an upper binding wire and a lower binding wire. The upper binding wire is used to force the rubber sealing strip to press against the upper precast post, and the lower binding wire is used to force the inner circumferential part of the rubber sealing strip to be embedded in the gap between the lower edge of the sealing ring and the upper surface of the main body.

[0019] By adopting the above technical solution, the rubber sealing strip is bound by upper and lower binding wires. The lower binding wire forces the inner circumferential part of the rubber sealing strip to be embedded between the sealing ring and the upper surface of the main beam, which helps to ensure the sealing effect of the rubber sealing strip on the joint.

[0020] Optionally, a number of shims are provided between the upper precast column and the cast-in-place main beam. The shims are used to raise the upper precast column and the cast-in-place main beam to form the joint. The shims are fixedly connected to the reinforcing bars of the lower precast column. The support rod is connected to the vertical reinforcing bars of the lower precast column through the shims. The shims, the support rod, and the sealing ring are combined to form a reinforcing frame.

[0021] By adopting the above technical solution, the support rod, shims, and sealing rings form a reinforced frame, which facilitates the installation and fixing of the support rod and sealing ring. The reinforced frame is fixedly connected to the vertical reinforcing bars of the lower precast column through the shims, thus stabilizing the installation position of the reinforced frame. On the other hand, after the joint grouting layer is formed, it wraps around the support rod, and the support rod, as the skeleton of the joint grouting layer, strengthens the joint grouting layer.

[0022] Optionally, the connecting protrusion is provided with a steel reinforcement frame.

[0023] By adopting the above technical solution, the steel reinforcement cage strengthens the structure connecting the protrusions.

[0024] Optionally, the steel reinforcement cage is fixedly connected to the reinforcing frame.

[0025] By adopting the above technical solution, the steel reinforcement cage is fixedly connected to the reinforcing frame, so that the steel reinforcement cage is fixed to the vertical steel reinforcement of the lower precast column, and the position of the steel reinforcement cage is fixed. Under the action of the steel reinforcement cage and the reinforcing frame, the integrity between the connecting protrusion and the joint grouting layer is improved.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By injecting grout into the grouting sleeve and the joint, a joint grouting layer is formed. The joint grouting layer and the solidified grout inside the grouting sleeve are integrated into a whole. After the joint grouting layer solidifies, a connecting protrusion is formed on the lower surface. The connecting protrusion is embedded in the connecting groove, so that the upper precast column and the main beam have a mechanical connection in addition to the bonding effect between the concrete, thus strengthening the connection between the upper precast column and the main beam.

[0028] 2. The sealing ring and the upper precast column together serve as the carrier for the rubber sealing strip. The upper edge of the rubber sealing strip abuts against the outer circumference of the upper precast column, and the lower edge abuts against the upper surface of the main beam, thereby sealing the joint between the upper precast column and the main beam. Compared with sealing the joint with mortar, this method can improve the sealing efficiency of the joint between the precast column and the main beam. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of Example 1.

[0030] Figure 2 This is Example 1, a schematic diagram illustrating the connection relationship between the precast column and the main beam.

[0031] Figure 3 This is a schematic diagram of Example 1 used to illustrate the connection relationship between the reinforcing frame and the steel reinforcement skeleton.

[0032] Figure 4 yes Figure 2A magnified view of a portion of point A in the middle.

[0033] Figure 5 Example 2 is a schematic diagram illustrating the connection between the precast column and the main beam.

[0034] Figure 6 A schematic diagram of the structure of the model block in Example 2.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Column structure; 11. Upper precast column; 111. Grouting sleeve; 112. Keyway; 12. Lower precast column; 13. Joint grouting layer; 131. Connecting protrusion; 132. Upper protrusion; 133. Snap-fit ​​protrusion; 134. Chamfered transition surface; 2. Main beam; 21. Main beam precast body; 22. Main beam cast-in-place body; 221. Main body; 222. Connecting part; 2221. Connecting groove; 2223. Snap-fit ​​groove; 4. Shim; 5. Joint; 6. Reinforcing steel skeleton; 61. Vertical steel skeleton; 62. Circular steel skeleton; 7. Reinforcing frame; 71. Support rod; 72. Sealing ring; 8. Rubber sealing strip; 81. Upper binding wire; 82. Lower binding wire; 9. Model block. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0038] Example 1

[0039] This application discloses a prefabricated concrete frame structure. (Refer to...) Figure 1 The prefabricated concrete frame structure includes column structure 1 and main beam 2. The main beam 2 includes a precast main beam body 21 and a cast-in-place main beam body 22. The cast-in-place main beam body 22 includes a main body 221 and a connecting part 222. The main body 221 is located above the precast main beam body 21 and is integrated with the precast main beam body 21. The connecting part 222 is connected to the column structure 1. The column structure 1 includes an upper precast column 11, a lower precast column 12, and a joint grouting layer 13, wherein the upper precast column 11 is located on the main beam 2. The lower precast column 12 is located below the main beam 2. A shim 4 is provided between the lower end face of the upper precast column 11 and the upper surface of the connecting part 222. The shim 4 forms a joint 5 between the lower end face of the upper precast column 11 and the connecting part 222. The joint grouting layer 13 fills the joint 5. The lower surface of the connecting part 222 is connected to the upper end face of the lower precast column 12. A grouting sleeve 111 is provided at the lower end of the upper precast column 11. The grouting sleeve 111 is sleeved and connected to the vertical steel bar of the lower precast column 12.

[0040] In the prefabricated building frame structure, when the main beam 2 is connected to the column structure 1, the precast main beam 21 is formed by casting to form the cast-in-place main beam 22, and at the same time, it is connected to the lower precast column 12. The upper precast column 11 located above the main beam 2 forms a joint grouting layer 13 by injecting grout from the grouting sleeve 111. The upper precast column 11 is connected to the main beam 2 through the joint grouting layer 13. The upper precast column 11 and the lower precast column 12 are connected through the grouting sleeve 111 and the grout solidified in the grouting sleeve 111, and the grout solidified in the grouting sleeve 111 is integrated with the joint grouting layer 13.

[0041] Reference Figure 2 The lower end face of the upper precast column 11 is provided with a keyway 112, and the upper surface of the joint grouting layer 13 forms an upper protrusion 132 that fills the keyway 112. The interlocking action between the upper protrusion 132 and the keyway 112 strengthens the connection between the joint grouting layer 13 and the upper precast column 11.

[0042] Reference Figure 2 During the casting process of the main beam cast-in-place body 22, the connecting part 222 is formed by using the model block 9 to occupy the space of the corresponding connecting part 222, so that the main beam cast-in-place body 22 is cast and the model block 9 is removed. After that, the upper surface of the main body 221 forms a connecting groove 2221 to avoid the model block 9. During the subsequent grouting construction of the joint grouting layer 13, the grout enters the connecting groove 2221, causing the lower surface of the joint grouting layer 13 to bulge out and form a connecting protrusion 131 structure corresponding to the connecting groove 2221. The connecting protrusion 131 and the connecting groove 2221 are interlocked, which strengthens the connection between the joint grouting layer 13 and the main beam cast-in-place body 22.

[0043] Reference Figure 2 The connecting protrusion 131 is a frustum structure. The upper diameter of the connecting protrusion 131 is smaller than the lower diameter. When the connecting groove 2221 and the connecting protrusion 131 are matched in shape, a snap-fit ​​effect is formed between the connecting protrusion 131 and the connecting groove 2221, so that the upper precast column 11 and the main beam precast body 21 can transmit the load along the vertical direction, which can increase the tensile strength of the connecting column under vibration.

[0044] Since the lower diameter of the connecting protrusion 131 is larger than the upper diameter, the model block 9 used to form the connecting groove 2221 can be made of rubber material. This gives the model block 9 elastic deformation capability, allowing it to be easily removed after the main beam cast-in-place body 22 is formed. Furthermore, to improve the elastic deformation capability of the model block 9, a cavity structure can be provided on the model block 9, making it easier to deform.

[0045] Reference Figure 2 and Figure 3The connecting protrusion 131 is provided with a steel reinforcement frame 6, which includes multiple vertical steel ribs 61 and multiple annular steel ribs 62. Each vertical steel rib 61 is arranged in a circumferential array around the center line of the connecting protrusion 131, and the annular steel ribs 62 are arranged in a staggered manner along the vertical direction. Each annular steel rib 62 is connected to each vertical steel rib 61 at the same time. The steel reinforcement frame 6 can enhance the structural strength of the connecting protrusion 131.

[0046] Reference Figure 2 and Figure 3 A reinforcing frame 7 is provided between the lower end face of the upper precast column 11 and the cast-in-place main beam 22. The reinforcing frame 7 includes multiple shims 4, multiple support rods 71 ​​and sealing rings 72. The shims 4 are used to raise the upper precast column 11 and the cast-in-place main beam 22 to form the aforementioned joint 5. The shims 4 are welded and fixed to the vertical steel bars of the lower precast column 12.

[0047] Reference Figure 2 and Figure 3 A sealing ring 72 is set around the joint grouting layer 13. Support rods 71 ​​are located inside the sealing ring 72. Multiple support rods 71 ​​are set at intervals along the circumference of the sealing ring 72. The support rods 71 ​​are perpendicular to the sealing ring 72. The support rods 71 ​​are steel rods with a diameter smaller than the thickness of the shim 4. One end of the support rod 71 is welded and fixed to the shim 4, and the other end of the support rod 71 is welded and fixed to the inner circumferential surface of the reinforcing frame 7. After the joint grouting layer 13 solidifies and forms, it wraps around the support rods 71, so that the support rods 71 ​​serve as the skeleton of the joint grouting layer 13 and strengthen the joint grouting layer 13. In addition, the support rods 71 ​​are fixedly connected to the vertical steel bars of the lower precast column 12 through the shim 4, so that the connection between the joint grouting layer 13 and the lower precast column 12 is strengthened.

[0048] The reinforcing steel frame 6 is welded and fixed to the reinforcing frame 7, which further strengthens the connection between the protrusion 131 and the joint grouting layer 13.

[0049] Reference Figure 4 A rubber sealing strip 8 is detachably provided around the outer periphery of the sealing ring 72. The upper edge of the rubber sealing strip 8 abuts against the upper precast column 11, and the lower edge of the rubber sealing strip 8 is folded outward and abuts against the upper surface of the main body 221. In this embodiment, the rubber sealing strip 8 is a ring structure. In another embodiment, the rubber sealing strip 8 can also be a strip structure, and the two ends of the strip structure rubber sealing strip 8 are overlapped.

[0050] Reference Figure 4The rubber sealing strip 8 is provided with an upper binding thread 81 and a lower binding thread 82. The upper binding thread 81 is used to bind the upper edge of the rubber sealing strip 8 to the outer circumference of the upper precast column 11, so as to force the rubber sealing strip 8 to press against the upper precast column 11. When the lower binding thread is tightened, the lower binding thread forces the folded part of the lower edge of the rubber sealing strip 8 to be embedded in the gap between the lower edge of the sealing ring 72 and the upper surface of the main beam cast-in-place body 22, so that the rubber sealing strip 8 forms a sealing effect on the gap between the sealing ring 72 and the main beam cast-in-place body 22. In another embodiment, the binding connection method of the rubber sealing strip 8 can be replaced by adhesive sealing using glass glue, foam sealant or cement mortar.

[0051] The rubber sealing strip 8 can seal the joint 5 between the precast column 11 and the cast-in-place main beam 22 in the circumferential direction, so as to facilitate grouting to form the joint grouting layer 13. Compared with the method of sealing the joint 5 with cement mortar, the rubber sealing strip 8 does not need to occupy the inner space of the joint 5 when sealing the joint 5, which is conducive to increasing the volume of the joint grouting layer 13, thereby strengthening the connection between the joint grouting layer 13 and the precast column 11 and the main beam 2.

[0052] The implementation principle of a prefabricated concrete frame structure in this application embodiment is as follows: When installing the frame structure of the prefabricated building, the overall installation is carried out in the order of columns first and then beams. During the installation of the main beam 2, the prefabricated body 21 of the main beam 2 is hoisted above the lower prefabricated column 12 that has been installed first and temporarily positioned. Then, formwork is erected around the prefabricated body 21 of the main beam, and the cast-in-place body 22 of the main beam is formed by pouring. After the cast-in-place body 22 of the main beam solidifies, the construction of the column structure 1 continues. Before the construction of the column structure 1, the shims 4, the reinforcing frame 7 and the steel reinforcement skeleton 6 are installed. Then, the upper prefabricated column 11 is hoisted above the main beam 2, so that the vertical steel bars of the lower prefabricated column 12 are inserted into the grouting sleeve 111 at the lower end of the upper prefabricated column 11. Then, the joint 5 between the upper prefabricated column 11 and the cast-in-place body 22 of the main beam is sealed with rubber sealing tape 8. Then, grouting is carried out on the grouting sleeve 111 and the joint 5. After the grout solidifies, the rubber sealing tape 8 is removed.

[0053] Example 2

[0054] Reference Figure 5 The difference between this embodiment and embodiment 1 is that the structure of the connecting protrusion 131 in this embodiment is different from that in embodiment 1. The connecting protrusion 131 in this embodiment is a cubic structure. The two opposite sides of the connecting protrusion 131 are respectively provided with snap-fit ​​protrusions 133, and the two opposite inner sidewalls of the connecting groove 2221 are respectively provided with snap-fit ​​grooves 2223 that are adapted to the snap-fit ​​protrusions 133.

[0055] Reference Figure 6The model block 9 used to generate the connecting groove 2221 can be configured as a multi-part assembly structure spliced ​​along the horizontal direction. When removing the model block 9 from the connecting groove 2221, the middle component of the model block 9 is removed first, followed by the component corresponding to the snap-fit ​​protrusion 133. The gaps between adjacent components of the model block 9 can be sealed with adhesive to prevent concrete from seeping into the gaps between adjacent components.

[0056] Reference Figure 5 The snap-fit ​​protrusion 133 is frustum-shaped, and the larger end of the snap-fit ​​protrusion 133 is close to the connecting protrusion 131, which strengthens the connection between the snap-fit ​​protrusion 133 and the connecting protrusion 131.

[0057] Reference Figure 5 A chamfered transition surface 134 is provided between the outer peripheral surface of the connecting protrusion 131 and the surface of the joint grouting layer 13 to reduce stress concentration at the angle between the connecting protrusion 131 and the joint grouting layer 13, thereby reducing the possibility of cracking of the connecting protrusion 131.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated concrete frame structure, characterized in that: The structure includes a column structure (1) and a main beam (2). The main beam (2) includes a precast main beam body (21) and a cast-in-place main beam body (22). The cast-in-place main beam body (22) includes a main body (221) and a connecting part (222). The main body (221) is located above the precast main beam body (21) and is integrated with the precast main beam body (21). The connecting part (222) is connected to the column structure (1). The column structure (1) includes an upper precast column (11), a lower precast column (12), and a joint grouting layer (13). A joint is formed between the lower end face of the upper precast column (11) and the upper surface of the connecting part (222). The joint (5) is filled with the joint grouting layer (13). The lower surface of the connecting part (222) is connected to the upper end face of the lower precast column (12). The lower end of the upper precast column (11) is provided with a grouting sleeve (111). The grouting sleeve (111) is sleeved and connected to the vertical steel bar of the lower precast column (12). The lower surface of the joint grouting layer (13) is provided with a connecting protrusion (131). The upper surface of the connecting part (222) is provided with a connecting groove (2221) that matches the connecting protrusion (131). The connecting protrusion (131) is embedded in the connecting groove (2221).

2. The prefabricated concrete frame structure according to claim 1, characterized in that: The connecting protrusion (131) has a frustum structure, and the upper diameter of the connecting protrusion (131) is smaller than the lower diameter.

3. The prefabricated concrete frame structure according to claim 1, characterized in that: The connecting protrusion (131) has a cubic structure. The two opposite sides of the connecting protrusion (131) are respectively provided with snap-fit ​​protrusions (133). The two opposite inner walls of the connecting groove (2221) are respectively provided with snap-fit ​​grooves (2223) that are adapted to the snap-fit ​​protrusions (133).

4. A prefabricated concrete frame structure according to claim 3, characterized in that: The snap-fit ​​protrusion (133) is frustum-shaped, and the larger end of the snap-fit ​​protrusion (133) is close to the connecting protrusion (131).

5. A prefabricated concrete frame structure according to claim 1, characterized in that: A chamfered transition surface (134) is provided between the outer peripheral surface of the connecting protrusion (131) and the surface of the joint grouting layer (13).

6. A prefabricated concrete frame structure according to claim 1, characterized in that: The vertical steel bars of the lower precast column (12) are vertically fixed with support rods (71). One end of each support rod (71) is fixedly connected to a sealing ring (72) surrounding the joint grouting layer (13). The outer circumference of the sealing ring (72) is detachably surrounded by a rubber sealing strip (8). The upper edge of the rubber sealing strip (8) abuts against the upper precast column (11), and the lower edge of the rubber sealing strip (8) abuts against the upper surface of the main body (221).

7. A prefabricated concrete frame structure according to claim 6, characterized in that: The rubber sealing strip (8) is provided with an upper binding wire (81) and a lower binding wire (82). The upper binding wire (81) is used to force the rubber sealing strip (8) to press against the upper precast column (11), and the lower binding wire (82) is used to force the inner circumferential part of the rubber sealing strip (8) to be embedded in the gap between the lower edge of the sealing ring (72) and the upper surface of the main body (221).

8. A prefabricated concrete frame structure according to claim 6, characterized in that: Several shims (4) are provided between the upper precast column (11) and the cast-in-place main beam (22). The shims (4) are used to raise the upper precast column (11) and the cast-in-place main beam (22) to form the joint (5). The shims (4) are fixedly connected to the reinforcing bars of the lower precast column (12). The support rod (71) is connected to the vertical reinforcing bars of the lower precast column (12) through the shims (4). The shims (4), the support rod (71) and the sealing ring (72) are combined to form a reinforcing frame (7).

9. A prefabricated concrete frame structure according to claim 8, characterized in that: The connecting protrusion (131) is provided with a steel reinforcement skeleton (6).

10. A prefabricated concrete frame structure according to claim 9, characterized in that: The steel reinforcement frame (6) is fixedly connected to the reinforcing frame (7).

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