Connector for precast concrete component and connecting method thereof

Abstract

The present invention proposes a connector for precast concrete components and a connection method thereof, and relates to the technical field of pile foundation engineering, and in particular to a connection structure for connecting precast concrete components and a connection method thereof. A connector for precast concrete components comprises a first concrete component and a second concrete component, a connecting plate is provided between the first concrete component and the second concrete component, and a first connection hole and a second connection hole are provided on the connecting plate. The connection structure is simple, quick and convenient to install, reliable in quality, and has low requirements on the technical level of construction personnel. Mechanical connection can be achieved, and the pull-out resistance and horizontal bearing capacity of the connection are equal to the bending resistance of the component itself through the connection structure. It has the characteristics of efficient connection, simple and convenient, good comprehensive benefits, and high construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of pile foundation engineering, and in particular to a connection structure for connecting precast concrete components and a connection method thereof. Background Art

[0002] At present, the pile foundation concrete components used in industrial and civil construction, railways, highways, municipal administration and other fields are mainly precast piles and cast-in-place piles. The connection of precast piles is mainly through welding or mechanical connection, but it is mainly used to connect the precast piles of the same specifications and types at the top and bottom. In some projects, a combination of precast piles with different diameters or side lengths at the top and bottom is used, such as the connection of pipe piles with different diameters, and the connection between square piles with unequal side lengths. When the pile length exceeds a certain length, such as more than 17 meters, this type of pile connection is different from the connection of equal diameters or equal side lengths at the top and bottom. Affected by construction equipment, production conditions and transportation conditions, on-site splicing must be performed to achieve the corresponding length.

[0003] Common connection methods include welding, which is greatly affected by the weather and the level differences of on-site pile foundation construction workers. At the same time, it requires high technical levels of construction workers, resulting in large differences in the quality of pile-to-pile welding, and the quality of welding is difficult to control. Since the quality of welding directly affects the use of concrete components, this will cause safety hazards to the project. On the other hand, this welding method takes a long time, especially for large diameters, such as diameters above 800mm or large side lengths, such as side lengths above 550mm. The construction time for welding pile heads to pile heads exceeds 20 minutes, and a cooling time of about 8-10 minutes is also required, which affects the progress of the project, increases the workload of construction workers, and affects construction efficiency. Summary of the invention

[0004] The present invention is to solve the above-mentioned technical problems and provides a connection structure for concrete components and a construction method thereof. The connection structure is simple, quick and convenient to install, reliable in quality, and has low requirements on the technical level of construction personnel. Mechanical connection can be achieved. Through the connection structure, the pull-out resistance and horizontal bearing capacity of the connection are equal to the bending strength of the component itself. The connection structure has the characteristics of efficient connection, simple and convenient, good comprehensive benefits, and high construction efficiency.

[0005] A connector for precast concrete components comprises a first concrete component and a second concrete component. A connecting plate is arranged between the first concrete component and the second concrete component. The connecting plate is provided with a first connecting hole and a second connecting hole.

[0006] Preferably, a first steel bar connecting plate is provided at the end of the first concrete member, a third connecting hole is provided on the first steel bar connecting plate, and the third connecting hole corresponds to the first connecting hole in position.

[0007] Preferably, a second steel bar connecting plate is provided at the end of the second concrete member, and a fourth connecting hole is provided on the second steel bar connecting plate, and the fourth connecting hole corresponds to the position of the second connecting hole.

[0008] Preferably, the first connection hole and the second connection hole are not on the same plane.

[0009] Preferably, the plane where the second connection hole is located extends to the plane where the first connection hole is located to form a transition section, and the transition section is 0-90 degrees with the horizontal plane.

[0010] Preferably, a step may be provided in the first connecting hole and / or the second connecting hole.

[0011] Preferably, the depth of the step is no more than 1 / 2 of the total thickness of the connecting plate.

[0012] Preferably, the circumference or side length of the first connection hole and / or the second connection hole is greater than or equal to the circumference or side length of the main reinforcement anchor hole.

[0013] Preferably, the shape of the connecting plate is circular, or square outside and circle inside, or square outside and square inside, or circular, or polygonal.

[0014] Preferably, a reinforcing rib plate is provided on the outer side of the end of the second concrete member and on one side of the connecting plate.

[0015] Preferably, countersunk bolts are used in the first connection hole and / or the second connection hole for connection.

[0016] A connection method using the above-mentioned connection piece for precast concrete components, connecting a first concrete component and a first steel bar connection plate, a second concrete component and a second steel bar connection plate, respectively, comprises the following steps:

[0017] (1) Using construction equipment to construct the second concrete component to a predetermined position, and cleaning the surface of the second steel bar connection plate;

[0018] (2) placing the connection plate at the second steel bar connection plate on the second concrete member, and gradually adjusting the second connection hole of the connection plate to align with the fourth connection hole on the second steel bar connection plate;

[0019] (3) Use a second bolt to fix the second steel bar connecting plate and the connecting plate of the second concrete component.

[0020] (4) constructing the first concrete component to a corresponding position using construction equipment, and cleaning the surface of the first steel bar connecting plate of the first concrete component;

[0021] (5) gradually adjusting the distance between the end of the first concrete member and the connecting plate so that the third connecting hole in the first steel bar connecting plate is aligned with the first connecting hole of the connecting plate;

[0022] (6) placing the first steel bar connection plate on the first concrete member in close contact with the connection plate;

[0023] (7) Use the first bolt to fix the first steel bar connection plate and the connecting plate on the first concrete member, and then proceed to the next stage of construction from step 1.

[0024] Preferably, the predetermined position in step (1) refers to constructing the second concrete component to a position where the top of the second concrete component is 0.5 m to 1.5 m above the ground.

[0025] Preferably, the corresponding position in step (4) refers to constructing the first concrete member to a position 0.2m to 0.5m away from the end of the second concrete member.

[0026] A connection method using the above-mentioned connection piece for precast concrete components, connecting a first concrete component and a first steel bar connection plate, a second concrete component and a second steel bar connection plate, respectively, comprises the following steps:

[0027] (1) constructing the first concrete component to a predetermined position using construction equipment, and cleaning the surface of the first steel bar connecting plate of the first concrete component;

[0028] (2) gradually adjusting the distance between the end of the first concrete member and the connecting plate so that the third connecting hole in the first steel bar connecting plate is aligned with the first connecting hole on the connecting plate;

[0029] (3) placing the first steel bar connection plate on the first concrete member in close contact with the connection plate;

[0030] (4) using a first bolt to fix the first steel bar connection plate and the connection plate on the first concrete member;

[0031] (5) Using construction equipment to construct the second concrete component to the corresponding position, and cleaning the surface of the second steel bar connection plate;

[0032] (6) placing the connection plate at the second steel bar connection plate on the second concrete member, and gradually adjusting the second connection hole of the connection plate to align with the fourth connection hole on the second steel bar connection plate;

[0033] (7) Use the second bolts to fix the second steel bar connection plate and the connection plate of the second concrete member, and proceed to the next stage of construction from step 1.

[0034] Preferably, the predetermined position in step (1) refers to constructing the first concrete component to a position where the top of the first concrete component is 0.5 m to 1.5 m above the ground.

[0035] Preferably, the corresponding position in step (4) refers to constructing the second concrete component to a position 0.2 m to 0.5 m away from the end of the first concrete component.

[0036] The beneficial effects are:

[0037] (1) It has the advantages of simple structure, efficient connection, high construction efficiency and good comprehensive economic benefits;

[0038] (2) The second bolt adopts a countersunk bolt, which can more effectively reduce the thickness of the connecting plate;

[0039] (3) The step depth of the second connection hole is no more than 1 / 2 of the total thickness of the connection plate to effectively ensure the bending and tensile properties of the connection;

[0040] (4) The circumference or side length of the first connection hole is greater than or equal to the circumference or side length of the main reinforcement anchor hole, so that the external connection bolt has sufficient safe operating space. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the decomposed structure of Example 1;

[0042] Figure 2 This is a schematic diagram of the combined state structure of Example 1;

[0043] Figure 3 This is a front view of the connecting plate of Example 1;

[0044] Figure 4 It is a top view of the connecting plate of Example 1;

[0045] Figure 5 It is a top view of the first steel bar connecting plate of Example 1;

[0046] Figure 6 It is a top view of the second steel bar connecting plate of Example 1;

[0047] Figure 7 This is a schematic diagram of the decomposition structure of Example 2;

[0048] Figure 8 This is a schematic diagram of the combined state structure of Example 2;

[0049] Fig. 9 This is a front view of the connection plate of Example 2;

[0050] Fig.10 A top view of the connecting plate of Example 2;

[0051] Fig.11 It is a top view of the first steel bar connecting plate of Example 2;

[0052] Fig.12This is a top view of the second steel bar connecting plate of Example 2.

[0053] The meanings of the numbers in the figure are as follows: 1. connecting plate; 2. first concrete member; 3. first main reinforcement of the pile body; 4. first steel bar connecting plate; 5. second concrete member; 6. second main reinforcement of the pile body; 7. second steel bar connecting plate; 8. first connecting hole; 9. second connecting hole; 10. first bolt; 11. second bolt; 12. third connecting hole; 13. main reinforcement anchor hole; 14. reinforcement groove; 15. tensioning hole; 16. fourth connecting hole; 17. transition section. DETAILED DESCRIPTION

[0054] Example 1

[0055] The present invention aims to provide a connecting piece for connecting two concrete piles with different diameters or concrete shapes. Figure 1 As shown, the concrete pile with a larger diameter is the first concrete component 2, and the concrete pile with a smaller diameter is the second concrete component 5.

[0056] like Figure 3 and 4 As shown, the connecting plate 1 is provided with a first connecting hole 8 and a second connecting hole 9, and the number of the first connecting hole 8 and the second connecting hole 9 is set at 2-100, and the number of the first connecting hole 8 and the second connecting hole 9 may not be equal. Steps may be provided in the first connecting hole 8 and / or the second connecting hole 9 to facilitate the fixing of bolts. The first connecting hole 8 and the second connecting hole 9 are located on the same plane. In order to ensure the connection strength, the thickness of the connecting plate 1 is not less than 14 mm. In order to match the shape and size of the concrete member to be connected, the shape of the connecting plate 1 is circular, or square outside and circle inside, or square outside and square inside. The depth of the step provided in the first connecting hole 8 and / or the second connecting hole 9 is not greater than 1 / 2 of the thickness of the connecting plate 1.

[0057] like Figure 1 and Figure 5 As shown, the end of the first concrete member 1 is provided with a first steel bar connecting plate 4 matching its size and shape, and the first steel bar connecting plate 4 is provided with a plurality of groups of main bar anchor holes 13, reinforcing bar grooves 14, and tensioning holes 15. The first pile body main bars 3 pass through the main bar anchor holes 13 to fix the first concrete member 1 and the first steel bar connecting plate 4. The first steel bar connecting plate 4 is also provided with third connecting holes 12, and the third connecting holes 12 correspond to the first connecting holes 8 on the connecting plate 1 in position and are equal in number. The first connecting holes 8 on the connecting plate 1 and the third connecting holes 12 on the first steel bar connecting plate 4 are connected by first bolts 10 to fix the connecting plate 1 and the first concrete member 1.

[0058] like Figure 1 and Figure 6 As shown, the second concrete member 5 is provided with a second steel bar connecting plate 7 matching its size and shape at the end thereof, and the second steel bar connecting plate 7 is provided with a plurality of groups of main bar anchor holes 13, bar grooves 14, and tensioning holes 15. The second pile body main bars 6 pass through the main bar anchor holes 13 to fix the second concrete member 5 and the second steel bar connecting plate 7. The second steel bar connecting plate 7 is provided with fourth connecting holes 16, and the positions of the fourth connecting holes 16 and the second connecting holes 9 on the connecting plate 1 are equal in number. The second connecting holes 9 on the connecting plate 1 and the fourth connecting holes 16 on the second steel bar connecting plate 7 are connected by second bolts 11 to fix the connecting plate 1 and the second concrete member 5.

[0059] The first bolt 10 and / or the second bolt 11 are countersunk bolts, which can more effectively reduce the thickness of the connection plate. At the same time, the circumference or side length of the first connection hole 8 is greater than or equal to the circumference or side length of the main reinforcement anchor hole 13 to ensure sufficient safe operation space.

[0060] A method for connecting a connector for a precast concrete component:

[0061] (1) respectively connecting the first concrete member 2 and the first steel bar connecting plate 4, and the second concrete member 5 and the second steel bar connecting plate 7;

[0062] (2) Using construction equipment to construct the second concrete member 5 to a predetermined position, and cleaning the surface of the second steel bar connecting plate 7;

[0063] (3) placing the connection plate 1 at the second steel bar connection plate 7 on the second concrete member 5, and gradually adjusting the second connection hole 9 of the connection plate 1 to align with the fourth connection hole 16 on the second steel bar connection plate 7;

[0064] (4) The second steel bar connection plate 7 of the second concrete member 5 is fixed to the connection plate 1 by using the second bolts 11 .

[0065] (5) constructing the first concrete component 2 to the corresponding position using construction equipment, and cleaning the surface of the first steel bar connecting plate 4 of the first concrete component 2;

[0066] (6) gradually adjusting the distance between the end of the first concrete member 5 and the connecting plate 1 so that the third connecting hole 12 in the first steel bar connecting plate 4 is aligned with the first connecting hole 8 of the connecting plate 1;

[0067] (7) The first steel bar connecting plate 4 on the first concrete member 2 is tightly attached to the connecting plate 1;

[0068] (8) The first steel bar connecting plate 4 on the first concrete member 2 is fixedly connected to the connecting plate 1 by the first bolt 10, and the next stage of construction is started from step (1).

[0069] Wherein, in step (2), using construction equipment to construct the second concrete member 5 to a predetermined position means constructing the second concrete member 5 to a position where the top thereof is 0.5 m to 1.5 m above the ground;

[0070] In step (5), using construction equipment to construct the first concrete component 2 to the corresponding position means constructing the first concrete component 2 to a position 0.2m to 0.5m away from the end of the second concrete component 5.

[0071] A method for connecting a connector for a precast concrete component:

[0072] (1) respectively connecting the first concrete member 2 and the first steel bar connecting plate 4, and the second concrete member 5 and the second steel bar connecting plate 7;

[0073] (2) constructing the first concrete component 2 to a predetermined position using construction equipment, and cleaning the surface of the first steel bar connecting plate 4 of the first concrete component 2;

[0074] (3) gradually adjusting the distance between the end of the first concrete member 5 and the connecting plate 1 so that the third connecting hole 12 in the first steel bar connecting plate 4 is aligned with the first connecting hole 8 on the connecting plate 1;

[0075] (4) The first steel bar connecting plate 4 on the first concrete member 2 is tightly attached to the connecting plate 1;

[0076] (5) Using the first bolt 10 to fix the first steel bar connecting plate 4 on the first concrete member 2 to the connecting plate 1;

[0077] (6) Using construction equipment to construct the second concrete member 5 to the corresponding position, and cleaning the surface of the second steel bar connecting plate 7;

[0078] (7) placing the connection plate 1 at the second steel bar connection plate 7 on the second concrete member 5, and gradually adjusting the second connection hole 9 of the connection plate 1 to align with the fourth connection hole 16 on the second steel bar connection plate 7;

[0079] (8) The second steel bar connecting plate 7 of the second concrete member 5 is fixed to the connecting plate 1 with the second bolts 11, and the next stage of construction is carried out starting from step (1).

[0080] Wherein, in step (2), using construction equipment to construct the first concrete component 2 to a predetermined position means constructing the first concrete component 2 to a position where its top is 0.5m to 1.5m above the ground;

[0081] In step (5), using construction equipment to construct the second concrete member 5 to the corresponding position means constructing the second concrete member 5 to a position 0.2m to 0.5m away from the end of the first concrete member 2.

[0082] Example 2

[0083] The present invention aims to provide a connecting piece for connecting two concrete piles with different diameters or concrete shapes. Figure 7 As shown, the concrete pile with a larger diameter is the first concrete component 2, and the concrete pile with a smaller diameter is the second concrete component 5.

[0084] like Fig. 9 and 10 As shown, the connecting plate 1 is provided with a first connecting hole 8 and a second connecting hole 9, and the number of the first connecting hole 8 and the second connecting hole 9 is set at 2-100, and the number of the first connecting hole 8 and the second connecting hole 9 may not be equal. Steps may be provided in the first connecting hole 8 and / or the second connecting hole 9 to facilitate the fixing of bolts. The first connecting hole 8 and the second connecting hole 9 are not on the same plane. Therefore, the plane where the second connecting hole 9 is located extends to the plane where the first connecting hole 8 is located as a transition section 17, and the transition section is 0-90° with the horizontal plane. The height difference between the plane where the first connecting hole 8 is located and the plane where the second connecting hole 9 is located, that is, the height difference of the transition section is not less than the height of the bolt cap of the second bolt 11, to facilitate the installation of the second bolt 11.

[0085] In order to ensure the connection strength, the total thickness of the connecting plate 1 is not less than 14 mm. In order to match the shape and size of the concrete member to be connected, the connecting plate 1 is in the shape of a ring, or a square outside and a circle inside, or a square outside and a square inside. The depth of the step set in the first connecting hole 8 and / or the second connecting hole 9 is not greater than 1 / 2 of the thickness of the connecting plate 1.

[0086] like Figure 7 and Fig.11 As shown, the end of the first concrete member 1 is provided with a first steel bar connecting plate 4 matching its size and shape, and the first steel bar connecting plate 4 is provided with a plurality of groups of main bar anchor holes 13, reinforcing bar grooves 14, and tensioning holes 15. The first pile body main bars 3 pass through the main bar anchor holes 13 to fix the first concrete member 1 and the first steel bar connecting plate 4. The first steel bar connecting plate 4 is also provided with third connecting holes 12, and the third connecting holes 12 correspond to the first connecting holes 8 on the connecting plate 1 in position and are equal in number. The first connecting holes 8 on the connecting plate 1 and the third connecting holes 12 on the first steel bar connecting plate 4 are connected by first bolts 10 to fix the connecting plate 1 and the first concrete member 1.

[0087] like Figure 7 and Fig.12As shown, the second concrete member 5 is provided with a second steel bar connecting plate 7 matching its size and shape at the end thereof, and the second steel bar connecting plate 7 is provided with a plurality of groups of main bar anchor holes 13, bar grooves 14, and tensioning holes 15. The second pile body main bars 6 pass through the main bar anchor holes 13 to fix the second concrete member 5 and the second steel bar connecting plate 7. The second steel bar connecting plate 7 is provided with fourth connecting holes 16, and the positions of the fourth connecting holes 16 and the second connecting holes 9 on the connecting plate 1 are equal in number. The second connecting holes 9 on the connecting plate 1 and the fourth connecting holes 16 on the second steel bar connecting plate 7 are connected by second bolts 11 to fix the connecting plate 1 and the second concrete member 5.

[0088] The first bolt 10 and / or the second bolt 11 are countersunk bolts, which can more effectively reduce the thickness of the connection plate. At the same time, the circumference or side length of the first connection hole 8 is greater than or equal to the circumference or side length of the main reinforcement anchor hole 13 to ensure sufficient safe operation space.

[0089] A method for connecting a connector for a precast concrete component:

[0090] (1) respectively connecting the first concrete member 2 and the first steel bar connecting plate 4, and the second concrete member 5 and the second steel bar connecting plate 7;

[0091] (2) Using construction equipment to construct the second concrete member 5 to a predetermined position, and cleaning the surface of the second steel bar connecting plate 7;

[0092] (3) placing the connection plate 1 at the second steel bar connection plate 7 on the second concrete member 5, and gradually adjusting the second connection hole 9 of the connection plate 1 to align with the fourth connection hole 16 on the second steel bar connection plate 7;

[0093] (4) The second steel bar connection plate 7 of the second concrete member 5 is fixed to the connection plate 1 by using the second bolts 11 .

[0094] (5) constructing the first concrete component 2 to the corresponding position using construction equipment, and cleaning the surface of the first steel bar connecting plate 4 of the first concrete component 2;

[0095] (6) gradually adjusting the distance between the end of the first concrete member 5 and the connecting plate 1 so that the third connecting hole 12 in the first steel bar connecting plate 4 is aligned with the first connecting hole 8 of the connecting plate 1;

[0096] (7) The first steel bar connecting plate 4 on the first concrete member 2 is tightly attached to the connecting plate 1;

[0097] (8) The first steel bar connecting plate 4 on the first concrete member 2 is fixedly connected to the connecting plate 1 by the first bolt 10, and the next stage of construction is started from step (1).

[0098] Wherein, in step (2), using construction equipment to construct the second concrete member 5 to a predetermined position means constructing the second concrete member 5 to a position where the top thereof is 0.5 m to 1.5 m above the ground;

[0099] In step (5), using construction equipment to construct the first concrete component 2 to the corresponding position means constructing the first concrete component 2 to a position 0.2m to 0.5m away from the end of the second concrete component 5.

[0100] A method for connecting a connector for a precast concrete component:

[0101] (1) respectively connecting the first concrete member 2 and the first steel bar connecting plate 4, and the second concrete member 5 and the second steel bar connecting plate 7;

[0102] (2) constructing the first concrete component 2 to a predetermined position using construction equipment, and cleaning the surface of the first steel bar connecting plate 4 of the first concrete component 2;

[0103] (3) gradually adjusting the distance between the end of the first concrete member 5 and the connecting plate 1 so that the third connecting hole 12 in the first steel bar connecting plate 4 is aligned with the first connecting hole 8 on the connecting plate 1;

[0104] (4) The first steel bar connecting plate 4 on the first concrete member 2 is tightly attached to the connecting plate 1;

[0105] (5) Using the first bolt 10 to fix the first steel bar connecting plate 4 on the first concrete member 2 to the connecting plate 1;

[0106] (6) Using construction equipment to construct the second concrete member 5 to the corresponding position, and cleaning the surface of the second steel bar connecting plate 7;

[0107] (7) placing the connection plate 1 at the second steel bar connection plate 7 on the second concrete member 5, and gradually adjusting the second connection hole 9 of the connection plate 1 to align with the fourth connection hole 16 on the second steel bar connection plate 7;

[0108] (8) The second steel bar connecting plate 7 of the second concrete member 5 is fixed to the connecting plate 1 with the second bolts 11, and the next stage of construction is carried out starting from step (1).

[0109] Wherein, in step (2), using construction equipment to construct the first concrete component 2 to a predetermined position means constructing the first concrete component 2 to a position where its top is 0.5m to 1.5m above the ground;

[0110] In step (5), using construction equipment to construct the second concrete component 5 to the corresponding position means constructing the second concrete component 5 to a position 0.2 m to 0.5 m away from the end of the first concrete component 2 .

Claims

1. A connector for precast concrete components, comprising a first concrete component (2) and a second concrete component (5), characterized in that: A connection plate (1) is provided between the first concrete member (2) and the second concrete member (5), and the connection plate (1) is provided with a first connection hole (8) and a second connection hole (9); a first steel bar connection plate (4) matching the size and shape of the first concrete member (2) is provided at the end of the first concrete member (2), and the first steel bar connection plate (4) is provided with a plurality of groups of first main bar anchor holes, first bar grooves, and first tensioning holes, the first main bar anchor holes being used to pass the first pile body main bars (3) through the first main bar anchor holes to fix the first concrete member (2) and the first steel bar connection plate (4), and a third connection hole (12) is also provided on the first steel bar connection plate (4), and the third connection hole (12) corresponds to the position of the first connection hole (8) on the connection plate (1); the second concrete member (2) is provided with a first steel bar connection plate (4) having a first connection hole (8) on the connection plate (1); The end of the member (5) is provided with a second steel bar connecting plate (7) of a size and shape matching the member (5); the second steel bar connecting plate (7) is provided with a plurality of groups of second main bar anchor holes, second bar grooves, and second tensioning holes; the second main bar anchor holes are used to fix the second concrete member (5) and the second steel bar connecting plate (7) after the second pile body main bars (6) are passed through the second main bar anchor holes; the second steel bar connecting plate (7) is provided with a fourth connecting hole (16); the fourth connecting hole (16) corresponds to the position of the second connecting hole (9) on the connecting plate (1); the circumference or side length of the first connecting hole (8) is greater than or equal to the circumference or side length of the first main bar anchor hole, and / or the circumference or side length of the second connecting hole (9) is greater than or equal to the circumference or side length of the second main bar anchor hole.

2. The connector for precast concrete components according to claim 1, characterized in that: The first connection hole (8) and the second connection hole (9) are not on the same plane.

3. The connector for precast concrete components according to claim 2, characterized in that: The plane where the second connection hole (9) is located extends to the plane where the first connection hole (8) is located to form a transition section (17), and the transition section (17) is at an angle of 0-90 degrees to the horizontal plane.

4. The connector for precast concrete components according to claim 1, characterized in that: A step is provided in the first connecting hole (8) and / or the second connecting hole (9).

5. The connector for precast concrete components according to claim 4, characterized in that: The depth of the step is no greater than 1 / 2 of the total thickness of the connecting plate (1).

6. The connector for precast concrete components according to claim 1, characterized in that: The shape of the connecting plate (1) is a circular ring, a square outside and a circle inside, a square outside and a square inside, a circle, or a polygon.

7. The connector for precast concrete components according to claim 1, characterized in that: A reinforcing rib plate is provided on the outer side of the end of the second concrete component (5) and on one side of the connecting plate (1).

8. The connector for precast concrete components according to claim 1, characterized in that: Countersunk bolts are used for connection in the first connection hole (8) and / or the second connection hole (9).

9. A method for connecting a first concrete component (2) and a first steel bar connecting plate (4), a second concrete component (5) and a second steel bar connecting plate (7) using the connecting piece for precast concrete components as claimed in claim 1 or 2, characterized in that: The following steps are involved: (1) Using construction equipment to construct the second concrete component (5) to a predetermined position, and cleaning the surface of the second steel bar connecting plate (7); (2) placing the connection plate (1) at the second steel bar connection plate (7) on the second concrete component (5), and gradually adjusting the connection plate (1) so that the second connection hole (9) is aligned with the fourth connection hole (16) on the second steel bar connection plate (7); (3) fixing the second steel bar connecting plate (7) of the second concrete member (5) to the connecting plate (1) using a second bolt (11); (4) Using construction equipment to construct the first concrete component (2) to the corresponding position, and cleaning the surface of the first steel bar connecting plate (4) of the first concrete component (2); (5) gradually adjusting the distance between the end of the first concrete member (2) and the connecting plate (1) so that the third connecting hole (12) in the first steel bar connecting plate (4) is aligned with the first connecting hole (8) of the connecting plate (1); (6) placing the first steel bar connecting plate (4) on the first concrete component (2) in close contact with the connecting plate (1); (7) The first steel bar connecting plate (4) on the first concrete member (2) is fixedly connected to the connecting plate (1) using the first bolt (10), and the next stage of construction is started from step (1).

10. A connection method according to claim 9, characterized in that: The predetermined position in step (1) refers to constructing the second concrete component (5) to a position where the top of the second concrete component (5) is 0.5 m to 1.5 m above the ground.

11. A connection method according to claim 9, characterized in that: The corresponding position in step (4) refers to constructing the first concrete component (2) to a position 0.2 m to 0.5 m away from the end of the second concrete component (5).

12. A method for connecting a first concrete component (2) and a first steel bar connecting plate (4), a second concrete component (5) and a second steel bar connecting plate (7) using the connector for precast concrete components according to claim 1 or 2, characterized in that: The following steps are involved: (1) Using construction equipment to construct the first concrete component (2) to a predetermined position, and cleaning the surface of the first steel bar connecting plate (4) of the first concrete component (2); (2) gradually adjusting the distance between the end of the first concrete member (2) and the connecting plate (1) so that the third connecting hole (12) in the first steel bar connecting plate (4) is aligned with the first connecting hole (8) on the connecting plate (1); (3) placing the first steel bar connecting plate (4) on the first concrete component (2) in close contact with the connecting plate (1); (4) Using a first bolt (10) to fix the first steel bar connecting plate (4) on the first concrete component (2) to the connecting plate (1); (5) Using construction equipment to construct the second concrete component (5) to the corresponding position, and cleaning the surface of the second steel bar connecting plate (7); (6) placing the connection plate (1) at the second steel bar connection plate (7) on the second concrete component (5), and gradually adjusting the second connection hole (9) of the connection plate (1) to align with the fourth connection hole (16) on the second steel bar connection plate (7); (7) The second steel bar connecting plate (7) of the second concrete member (5) is fixed to the connecting plate (1) using the second bolt (11), and the next stage of construction is started from step (1).

13. A connection method according to claim 12, characterized in that: The predetermined position in step (1) refers to constructing the first concrete component (2) to a position where the top of the first concrete component (2) is 0.5 m to 1.5 m above the ground.

14. A connection method according to claim 12, characterized in that: The corresponding position in step (4) refers to constructing the second concrete component (5) to a position 0.2 m to 0.5 m away from the end of the first concrete component (2).

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