Precast concrete component connection structure and precast concrete component connection device

Abstract

This utility model discloses a connection structure and device for precast concrete components. The connection structure includes a connector and at least one opening groove on the outer edge of an end plate on the precast concrete component. The opening groove penetrates the upper and lower surfaces of the end plate, and the connector is embedded in the opening groove. The connection device includes two end plates located at the ends of adjacent precast concrete components, and also includes the connection structure. The opening grooves on the outer edges of the two end plates of the two precast concrete components are vertically aligned, and the two end plates are connected together by the connector embedded in the two vertically aligned opening grooves. This utility model has a simple structural design, enabling rapid and reliable connection of multiple precast concrete components.

Description

Technical Field

[0001] This utility model relates to the field of building pile foundation connection structure technology, and in particular to a precast concrete component connection structure and a precast concrete component connection device. Background Technology

[0002] As people's requirements for buildings become higher and higher, the structural forms of buildings are also becoming more and more complex. This places higher demands on the bearing capacity of the foundation. Natural foundations can no longer fully bear the load transmitted from the superstructure. As a result, the use of precast concrete components in factories for foundations is becoming more and more common. Construction equipment drives (or presses) the precast concrete components into the ground to become foundation piles, which then bear the load of the superstructure.

[0003] Because the length of a single precast concrete component is insufficient to meet the required depth for the entire pile foundation, multiple precast concrete components must be connected together for use. The key is the connection between the ends of the precast concrete components. Currently, the joints of concrete components used in engineering projects are welded together. This mainly involves welding the end plates of the precast concrete components to each other. However, this process is prone to welding quality issues that do not meet requirements, posing certain safety hazards to the project. Furthermore, this welding method is time-consuming, affecting construction efficiency. Additionally, many precast concrete component construction workers drive piles before the welded joints have fully cooled, reducing welding quality and also posing safety hazards to the project's quality.

[0004] In recent years, some mechanical connection methods have emerged in the market, but they are mainly clamp-type or bolt-type connections. Although they can be used in some geological or engineering applications, their resistance to horizontal forces needs improvement. The main problem is that under horizontal forces, individual or local bolts are prone to stress, resulting in uneven stress distribution, broken tendons, or broken mechanical connections, thus posing potential safety hazards to the project.

[0005] Therefore, how to design a precast concrete component connection structure and a precast concrete component connection device that can solve the above problems is a topic that the inventors of this application have devoted themselves to researching. Utility Model Content

[0006] The purpose of this utility model is to provide a precast concrete component connection structure and a precast concrete component connection device, which has a simple structure, enables multiple precast concrete components to be quickly fixed and connected, and is safe and reliable.

[0007] To achieve the above objectives, this utility model provides a connection structure for precast concrete components, including a connector and at least one opening groove disposed on the outer edge of an end plate on the precast concrete component. The opening groove penetrates the upper and lower surfaces of the end plate, and the connector is embedded in the opening groove.

[0008] Preferably, the cross-section of the opening groove is circular or rectangular.

[0009] A precast concrete component connection device includes two end plates disposed at the ends of adjacent precast concrete components, and further includes the precast concrete component connection structure. The opening slots on the outer edges of the two end plates of the two precast concrete components are vertically corresponding, and the two end plates are connected together by being embedded in the two vertically corresponding opening slots through the connector.

[0010] Preferably, the end plate is a circular or rectangular plate, or a circular or rectangular plate with a through hole in the center.

[0011] Preferably, the connector and the opening groove are fastened together by a pin, a wedge, a semi-circular fastener, or structural adhesive.

[0012] Preferably, the connector is a plate or column with an I-shaped cross-section, the middle part of the connector is embedded in the opening groove, and the upper and lower ends of the connector extend out of the opening groove.

[0013] Preferably, the cross-sectional shape of the middle portion of the connector matches the cross-sectional shape of the opening groove.

[0014] Preferably, the opening distance of the slot is 0.5 mm larger than the cross-sectional length or diameter of the middle portion of the connector.

[0015] Preferably, the connection between the middle part of the connector and the upper and lower ends has a rounded transition shape.

[0016] Preferably, the two end plates are sealed together by structural adhesive or welding.

[0017] After adopting the above solution, the precast concrete component connection structure and precast concrete component connection device of this utility model have the following advantages:

[0018] 1. The precast concrete component connection structure of this application can ensure the quality of the connection of precast concrete components, improve the construction quality of precast concrete components, effectively avoid the occurrence of engineering safety accidents, and greatly reduce engineering safety hazards.

[0019] 2. The connection strength of the precast concrete component connection device made using the precast concrete component connection structure of this application meets the engineering design requirements and service life. At the same time, it requires less time. The use of I-shaped mechanical connection or welding plus mechanical connection allows for continued pile driving after the connection is completed, which greatly saves pile splicing time and improves construction efficiency. Furthermore, the use of I-shaped mechanical connection plus welding connection provides double insurance and ensures the quality of the project.

[0020] 3. Due to the use of I-shaped mechanical connectors on all four sides, the upper and lower precast concrete components are guaranteed not to be misaligned, which greatly improves the horizontal and seismic resistance performance. Attached Figure Description

[0021] Figure 1 This is an exploded structural diagram of Embodiment 1 of the precast concrete component connection device of this utility model;

[0022] Figure 2 This is a schematic diagram of the combined state structure of Embodiment 1 of the precast concrete component connection device of this utility model;

[0023] Figure 3 This is an exploded structural diagram of Embodiment 2 of the precast concrete component connection device of this utility model;

[0024] Figure 4 This is a schematic diagram of the combined state structure of Embodiment 2 of the precast concrete component connection device of this utility model.

[0025] Numbering Explanation:

[0026] 1-End plate 2-Through hole

[0027] 3, 3' - Connector; 4, 4' - Opening slot

[0028] 5-Fasteners 6-Wedges

[0029] 7-U-shaped washer Detailed Implementation

[0030] The present invention will now be described with reference to the embodiments shown in the accompanying drawings. The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but only by the scope of the claims, and includes all modifications having the same meaning as and within the scope of the claims.

[0031] The connection structure of the precast concrete components of this utility model is described below with reference to specific embodiments.

[0032] like Figure 1 , Figure 2 The diagram shows the exploded and assembled states of the precast concrete component connection device according to Embodiment 1 of this utility model. The device includes two end plates 1 disposed at the ends of two adjacent precast concrete components and a precast concrete component connection structure for connecting the two end plates 1. The two end plates 1 are arranged vertically and fit together. The end plates 1 can be circular or rectangular; in this embodiment, rectangular plates are used. A circular through hole 2 is provided in the center of each end plate 1.

[0033] The precast concrete component connection structure includes a connector 3 and at least one opening slot 4 located on the outer edge of the end plate 1 of the precast concrete component. The opening slot 4 penetrates the upper and lower surfaces of the end plate 1. As one embodiment, this embodiment provides the opening slot 4 only on one outer side of the end plate 1. Opening slots can also be provided on two, three, or four sides, all of which fall within the scope of this application. The cross-section of the opening slot 4 can be arc-shaped or rectangular; this embodiment uses an arc shape. In this embodiment, two opening slots 4 are provided, spaced apart on the front side of the end plate 1.

[0034] Two connectors 3 are provided. In this embodiment, the cross-section of connector 3 is an I-shaped column. The middle part of connector 3 has a rounded transition shape at the connection with the upper and lower ends, which can make the stress more even. The middle part of the two connectors 3 is used to fit into two open slots 4. The thickness of the middle part can ensure that its tensile strength is more than 25% greater than the tensile and shear strength of the precast concrete component itself. The material and thickness of the connector 3 should take into account the service life and should not be less than the design service life of the precast concrete component itself. The middle part of connector 3 is fitted into the open slots 4.

[0035] The two pairs of slots 4 on the front sides of the two end plates 1 are vertically aligned. The two end plates 1 are connected together by two connectors 3 embedded in the two vertically aligned slots 4. The upper and lower ends of each connector 3 extend out of the two vertically aligned slots 4, and preferably, after extending out of the two slots 4, they abut against the upper and lower surfaces of the two end plates 1. The circular cross-section of the middle part of the connector 3 fits into the arc-shaped cross-section of the slot 4, and the corresponding parts match in shape. Alternatively, the opening distance d of the slot 4 can be slightly larger than the diameter of the middle cross-section of the connector 3, generally greater than 0.5 mm, to facilitate the quick installation of the I-shaped connector 3. The connection between the connector 3 and the slot 4 is reinforced by temporary fixing measures such as pins, semi-circular fasteners, or structural adhesive, so that the two precast concrete components are quickly fixed together and the I-shaped connector 3 will not tilt to the side. In this embodiment, a semi-circular fastener 5 is provided between the connector 3 and the slot 4. Furthermore, the two end plates 1 are sealed together by structural adhesive or welding to form an integral mechanical connection structure.

[0036] The processing and installation method of the precast concrete component connection device of this utility model includes the following steps:

[0037] (1) Set rectangular end plates 1 on two adjacent precast concrete components, or circular end plates 1 can be set. Two opening slots 4 are processed on the front side of the two end plates 1 respectively. After the opening slots 4 of the end plates are processed, they are filled with plastic foam or mortar blocks or covered with protective covers to prevent them from being blocked by concrete during the production process.

[0038] (2) When connecting adjacent end plates 1, remove the plastic foam on the opening slot 4 of the end plate 1, fix the center of the upper and lower precast concrete components, ensure that the ends of the upper and lower precast concrete components are vertical and aligned with each other, and ensure that the center lines of the opening slots 4 of the two end plates 1 are consistent.

[0039] (3) Carefully check the flatness of the end face of the rectangular end plate 1 to ensure that the two precast concrete components are flat after being joined together;

[0040] (4) After aligning the upper and lower precast concrete components, the middle part of the I-shaped connector 3 is embedded into the corresponding opening slots 4 of the two end plates 1 and fixed with structural adhesive or pins, or a semi-circular fastener 5 is set in the gap between the connector 3 and the opening slot 4 to ensure that the I-shaped connector 3 will not tilt to the side; thereby connecting the upper and lower precast concrete components into a whole.

[0041] (5) When there are special requirements, the upper and lower end plates 1 can be sealed with structural adhesive or welding to form an integral mechanical connection.

[0042] like Figure 3 , Figure 4 The diagram shows the exploded and assembled states of Embodiment 2 of the precast concrete component connecting device of this utility model. This embodiment is largely the same as Embodiment 1 above, and the similarities will not be repeated. The difference is that the front sides of the end plates of the two precast concrete components in this connecting device have two rectangular opening slots 4' spaced apart on the left and right. The connector 3' is a plate with an I-shaped cross-section, and the connector 3' is embedded in the rectangular opening slot 4'. The shape of the part of the connector 3' that fits into the opening slot 4' matches the shape of the opening slot 4'. In this embodiment, a wedge-shaped piece 6 is inserted between the connector 3' and the opening slot 4' to increase the tightness between the connector 3' and the opening slot 4'. Alternatively, a U-shaped gasket 7 can be used between the upper and lower surfaces of the two end plates 1 and the connector 3' to eliminate the gap between the upper and lower surfaces of the end plates 1 and the connector 3'. The U-shaped gasket 7 can be placed between the upper end plate and the connector 3', or between the connector 3' and the lower end plate, or both between the upper and lower end plates and the connector, depending mainly on the size of the gap between the upper and lower end plates and the connector.

[0043] This embodiment uses both the wedge-shaped member 6 and the U-shaped gasket 7 as fastening connection methods, such as... Figure 4 As shown, this further increases the tightness between the connector 3' and the opening slot 4'.

[0044] This utility model utilizes a precast concrete component connection structure to ensure the quality of precast concrete component connections, improves the construction quality of precast concrete components, effectively avoids engineering safety accidents, and greatly reduces engineering safety hazards. The connection strength of the manufactured precast concrete component connection device meets the engineering design requirements and service life, while requiring less time. It adopts an I-shaped mechanical connection or a welding-plus-mechanical connection, allowing pile driving to continue immediately after connection, greatly saving pile splicing time and improving construction efficiency. Furthermore, the combination of I-shaped mechanical connection and welding provides double protection, ensuring project quality.

[0045] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include undisclosed common knowledge or customary techniques in the art. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0046] It should be understood that this utility model is not limited to the embodiments, methods, and structures described above, nor to the precise structures shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A connection structure for precast concrete components, characterized in that, It includes a connector and at least one opening groove on the outer edge of an end plate disposed on the precast concrete component. The opening groove penetrates the upper and lower surfaces of the end plate, and the connector is embedded in the opening groove.

2. The precast concrete component connection structure according to claim 1, characterized in that, The cross-section of the opening groove is either circular or rectangular.

3. A precast concrete component connection device, comprising two end plates disposed at the ends of adjacent precast concrete components, characterized in that, It also includes the precast concrete component connection structure as described in claim 1 or 2, wherein the opening slots on the outer edges of the two end plates of the two precast concrete components are vertically corresponding, and the two end plates are connected together by being embedded in the two vertically corresponding opening slots through the connector.

4. The precast concrete component connection device according to claim 3, characterized in that, The end plate is a circular or rectangular plate, or a circular or rectangular plate with a through hole in the center.

5. The precast concrete component connection device according to claim 3, characterized in that, The connector and the opening slot are fastened together by pins, wedges, semi-circular fasteners, or structural adhesive.

6. The precast concrete component connection device according to claim 3, characterized in that, The connector is a plate or column with an I-shaped cross-section. The middle part of the connector is embedded in the opening groove, and the upper and lower ends of the connector extend out of the opening groove.

7. The precast concrete component connection device according to claim 6, characterized in that, The cross-sectional shape of the middle portion of the connector matches the cross-sectional shape of the opening groove.

8. The precast concrete component connection device according to claim 7, characterized in that, The opening distance of the slot is 0.5 mm larger than the cross-sectional length or diameter of the middle part of the connector.

9. The precast concrete component connection device according to claim 6, characterized in that, The middle part of the connector has a rounded transition shape at the connection between the upper and lower ends.

10. The precast concrete component connection device according to claim 3, characterized in that, The two end plates are sealed together by structural adhesive or welding.

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