Fabricated connection of open-section thin-wall UHPC component and construction method thereof

Abstract

The invention relates to the technical field of building structures, in particular to an open-section thin-wall UHPC (Ultra High Performance Concrete) component fabricated connection and a construction method thereof, comprising a first I-shaped-section thin-wall UHPC component, a first connecting piece, a second connecting piece, a second I-shaped-section thin-wall UHPC component, a third connecting piece and a fourth connecting piece, the first I-shaped section thin-wall UHPC component and the second I-shaped section thin-wall UHPC component are fixed in a butt joint mode, and a first connecting piece, a second connecting piece, a third connecting piece and a fourth connecting piece are fixedly arranged at the connecting position of the first I-shaped section thin-wall UHPC component and the second I-shaped section thin-wall UHPC component in a butt joint mode. The embedded part and the UHPC component body form effective anchoring, the connecting part and the embedded part are combined in a mechanical connection or welding mode, and it is ensured that the connecting joint has enough bearing capacity, rigidity and ductility.

Description

Technical Field

[0001] This invention relates to the field of building structure technology, specifically to the prefabricated connection of open-section thin-walled UHPC components and its construction method. Background Technology

[0002] Traditional prefabricated concrete joints often rely on wet construction methods, such as using sleeve grouting or cast-in-place joints. These methods are not only inefficient but also have certain durability issues. Although ultra-high performance concrete (UHPC) materials have characteristics such as compressive strength exceeding 120MPa and excellent self-compacting properties, the connection of thin-walled components still faces a series of challenges under current technological conditions.

[0003] First, in the process of splicing columns, the traditional full grouting sleeve method requires a lot of on-site pouring work, and the pre-embedding accuracy of the joint is extremely high, which undoubtedly increases the difficulty and cost of construction. Second, in terms of the rigid connection between beams and columns, although steel structure nodes have high strength, they are prone to corrosion, while ordinary concrete nodes have insufficient rotation capacity, which limits their use in certain application scenarios.

[0004] To address the aforementioned issues, this invention combines the characteristics of UHPC materials with innovative dry connection technology, successfully overcoming these technical bottlenecks. By utilizing the high strength and excellent self-compacting properties of UHPC materials, combined with dry connection technology, it can effectively solve the problems of low construction efficiency and poor durability caused by traditional wet construction methods. At the same time, by optimizing the design of the connection structure, the accuracy and reliability of the node connection are improved, further enhancing the overall performance of the prefabricated concrete structure. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides an assembly connection method for open-section thin-walled UHPC components and its construction method.

[0006] The technical solution adopted by the present invention to solve its technical problem is: an assembled connection structure for thin-walled UHPC components with open cross-section, including a first I-shaped thin-walled UHPC component, a first connector, a second connector, a second I-shaped thin-walled UHPC component, a third connector, and a fourth connector. The first I-shaped thin-walled UHPC component and the second I-shaped thin-walled UHPC component are fixed together. The first connector, the second connector, the third connector, and the fourth connector are fixed together at the connection position of the first I-shaped thin-walled UHPC component and the second I-shaped thin-walled UHPC component. The first connector, the second connector, the third connector, and the fourth connector are symmetrically distributed.

[0007] The first I-shaped thin-walled UHPC component has a strengthening connection function. The first I-shaped thin-walled UHPC component is cast and formed with the UHPC shell through steel bars and a second perforated plate. The first I-shaped thin-walled UHPC component is fastened to the docking seat through the first perforated plate for assembly and forming.

[0008] Specifically, both the first I-shaped cross-section thin-walled UHPC component and the second I-shaped cross-section thin-walled UHPC component are provided with mating seats, and the mating seats are adapted to fit the mating seats. The mating seats are fixed on the second I-shaped cross-section thin-walled UHPC component. The first I-shaped cross-section thin-walled UHPC component and the second I-shaped cross-section thin-walled UHPC component are fixed by aligning the mating seats and the mating seats.

[0009] Both the first I-shaped thin-walled UHPC component and the second I-shaped thin-walled UHPC component are provided with mating seats. When the first I-shaped thin-walled UHPC component and the second I-shaped thin-walled UHPC component are combined, the two mating seats are flush and used for the mating and fixing of the first connector, the second connector, the third connector and the fourth connector.

[0010] Specifically, the connection positions of the first I-shaped cross-section thin-walled UHPC component, the second I-shaped cross-section thin-walled UHPC component, and the first connector, second connector, third connector, and fourth connector are fixed by pouring concrete blocks for corrosion protection.

[0011] Specifically, the first connector includes a UHPC shell, a first perforated plate, a reinforcing bar, and a second perforated plate. The first perforated plate, the second perforated plate, and the third perforated plate are integrally formed and have holes. The reinforcing bar is fixedly installed on the first perforated plate, and the UHPC shell is cast and fixedly installed on the outside of the reinforcing bar.

[0012] Specifically, the first I-shaped cross-section thin-walled UHPC component, the second I-shaped cross-section thin-walled UHPC component, and the first connector, second connector, third connector, and fourth connector are provided with a reinforcing connection structure for fastening the first I-shaped cross-section thin-walled UHPC component, the second I-shaped cross-section thin-walled UHPC component, and the first connector, second connector, third connector, and fourth connector;

[0013] The reinforced connection structure is symmetrically arranged, and the symmetrical reinforced connection structure is fixed to the first connector, the second connector, the third connector, and the fourth connector.

[0014] Specifically, the reinforced connection structure includes a first connecting component and a second connecting component, the first connecting component and the second connecting component are fixed, and the first connecting component and the second connecting component have the same structure.

[0015] Specifically, the first connecting component includes a connecting distribution frame, a first mating groove is provided in the center of the connecting distribution frame, and multiple second ear plates and a first ear plate are provided on the connecting distribution frame for docking and fixing of the second docking mechanism, the first docking mechanism, the third docking mechanism and the fourth docking mechanism.

[0016] Specifically, the first docking mechanism includes a docking fixing support, a second mating groove is provided at the lower center of the docking fixing support, a connecting end is provided at the side end of the docking fixing support, a fastening bolt is threaded onto the connecting end, the upper end of the docking fixing support is fixed to a second alignment frame through a third alignment frame, a first connecting reinforcing shaft is fixed on the second alignment frame, a first alignment frame is fixed on the first connecting reinforcing shaft, a second alignment frame is fixed on the third alignment frame, and a fourth alignment frame is fixed on the second alignment frame.

[0017] Specifically, the first alignment frame and the fourth alignment frame are also fixedly connected to the first ear plate and the second ear plate to limit the top of the first docking mechanism. The docking fixing support is adapted to the second connector through the second mating groove. The connecting distribution frame is fixed to the first I-shaped cross-section thin-walled UHPC component through the first mating groove and bolts.

[0018] The construction method for prefabricated connection structures of thin-walled UHPC components with open cross-sections includes the following steps:

[0019] S1. Precast thin-walled UHPC component with first I-shaped cross section: Tie the steel reinforcement cage in the mold, fix the embedded parts at the end of the mold according to the design position, then pour the UHPC mixture, and after curing, the first thin-walled UHPC component with the embedded parts at the end is obtained.

[0020] S2. Component transportation and positioning: Transport the prefabricated first I-shaped section thin-walled UHPC component to the construction site, hoist and temporarily fix it, so that the ends of the two first I-shaped section thin-walled UHPC components to be connected are aligned and their embedded parts are set opposite each other;

[0021] S3. Installation of the first connector: Place the connector made of high-strength steel between or outside the two embedded parts to be connected, so that it fits or corresponds to the connection surface of the two embedded parts.

[0022] S4. Node connection: The connector is fixedly connected to the embedded parts at the ends of the two adjacent first I-shaped cross-section thin-walled UHPC components by bolt connection;

[0023] S5. Quality Inspection: Inspect the construction quality of the connection nodes to ensure that the connection is firm and reliable.

[0024] The beneficial effects of this invention are:

[0025] First, the I-shaped cross-section thin-walled UHPC component prefabricated connection structure of the present invention can effectively transfer the internal force at the connection node to the UHPC component body by pre-setting embedded parts with anchor plates and perforated plates at the end of the component. The bonding and anchoring between the embedded parts and the UHPC is reliable. The connectors made of high-strength steel ensure the load-bearing capacity of the connection node itself. The connection method between the connectors and the embedded parts is flexible. Bolt connection can be selected according to the stress requirements and construction conditions, realizing the rapid and efficient assembly of the components.

[0026] The construction method of this invention completes most of the component fabrication in the factory, with on-site work mainly involving hoisting and node connection. This significantly reduces on-site wet work, greatly improves construction efficiency, and shortens the construction period. Embedded parts are precisely installed during factory prefabrication, ensuring the accuracy of on-site connections. The quality of node connections is easily controlled, which helps ensure the safety and reliability of the entire prefabricated structure.

[0027] In summary, the connection structure of this invention is reasonably designed, and the construction method is simple and efficient. It can fully utilize the material properties of I-shaped cross-section thin-walled UHPC components and the advantages of prefabricated buildings. It is applicable to various prefabricated building structures using I-shaped cross-section thin-walled UHPC components and has broad application prospects.

[0028] Second, this invention reinforces the connection structure by connecting the first I-shaped thin-walled UHPC component, the second I-shaped thin-walled UHPC component, and the first, second, third, and fourth connecting members. The connecting distribution frame is fixed to the first I-shaped thin-walled UHPC component through the first mating groove and then tightened with bolts. The connecting distribution frame is fixedly connected to the second, first, third, and fourth docking mechanisms through multiple first and second ear plates. The lower ends of the second, first, third, and fourth docking mechanisms are connected to the first, second, third, and fourth connecting members, thereby providing multi-point support and ensuring a stable connection between the first and second I-shaped thin-walled UHPC components and the first, second, third, and fourth connecting members. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a physical structural diagram of the present invention;

[0031] Figure 2 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention;

[0032] Figure 3This is a diagram of the column assembly structure of the main body in this invention;

[0033] Figure 4 This is a diagram of the main beam assembly structure in this invention;

[0034] Figure 5 This is a diagram of the bolt connection and fixing structure of the main body in this invention;

[0035] Figure 6 This is a diagram of the grouting and corrosion protection structure of the main body in this invention;

[0036] Figure 7 This is a diagram showing the end structure of the first connector in this invention;

[0037] Figure 8 This is a diagram showing the internal structure of the first connector in this invention;

[0038] Figure 9 This is a perspective view of the second embodiment of the main body in this invention;

[0039] Figure 10 This is a frontal perspective three-dimensional structural diagram of the reinforced connection structure in this invention;

[0040] Figure 11 This is a frontal perspective three-dimensional structural diagram of the first connecting component in this invention;

[0041] Figure 12 This is a three-dimensional structural diagram of the first docking mechanism from a frontal perspective in this invention.

[0042] In the figure: 1-First I-section thin-walled UHPC component, 2-First connector, 3-Second connector, 4-Second I-section thin-walled UHPC component, 5-Third connector, 6-Fourth connector, 7-Matching seat, 8-Dating seat, 9-Concrete block, 10-UHPC shell, 11-First perforated plate, 12-Reinforcing bar, 13-Second perforated plate, 14-Third perforated plate, 15-Reinforced connection structure, 16-First connecting component, 17-Second connecting component. 18-First mating groove, 19-Connecting distribution frame, 20-First ear plate, 21-First docking mechanism, 22-First alignment frame, 23-First connecting reinforcing shaft, 24-Second alignment frame, 25-Dock fixing support, 26-Second mating groove, 27-Fastening bolt, 28-Connecting end, 29-Third alignment frame, 30-Second alignment frame, 31-Fourth alignment frame, 32-Second ear plate, 33-Second docking mechanism, 34-Third docking mechanism, 35-Fourth docking mechanism. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0044] The invention will be further described below with reference to the accompanying drawings.

[0045] Example 1

[0046] like Figures 1-8 As shown, the prefabricated connection structure of the open-section thin-walled UHPC component of the present invention includes a first I-shaped section thin-walled UHPC component 1, a first connector 2, a second connector 3, a second I-shaped section thin-walled UHPC component 4, a third connector 5, and a fourth connector 6. The first I-shaped section thin-walled UHPC component 1 and the second I-shaped section thin-walled UHPC component 4 are fixed together. The first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 are fixed together at the connection position of the first I-shaped section thin-walled UHPC component 1 and the second I-shaped section thin-walled UHPC component 4. The first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 are symmetrically distributed.

[0047] The first I-shaped thin-walled UHPC component 1 has a strengthening connection function. The first I-shaped thin-walled UHPC component 1 is cast and formed with the UHPC shell 10 through the steel bar 12 and the second perforated plate 13. The first I-shaped thin-walled UHPC component 1 is also fastened to the docking seat 8 through the first perforated plate 11 for assembly and forming.

[0048] Both the first I-shaped cross-section thin-walled UHPC component 1 and the second I-shaped cross-section thin-walled UHPC component 4 are provided with mating seats 8, and the mating seats 8 are adapted to the mating seats 7. The mating seats 7 are fixed on the second I-shaped cross-section thin-walled UHPC component 4. The first I-shaped cross-section thin-walled UHPC component 1 and the second I-shaped cross-section thin-walled UHPC component 4 are fixed by aligning the mating seats 7 and the mating seats 8.

[0049] Both the first I-shaped thin-walled UHPC component 1 and the second I-shaped thin-walled UHPC component 4 are provided with mating seats 8. When the first I-shaped thin-walled UHPC component 1 and the second I-shaped thin-walled UHPC component 4 are combined, the two mating seats 8 are flush and used for the mating and fixing of the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6.

[0050] The first I-shaped thin-walled UHPC component 1, the second I-shaped thin-walled UHPC component 4, and the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 are fixed by concrete blocks 9 for corrosion protection.

[0051] The first connector 2 includes a UHPC shell 10, a first perforated plate 11, a reinforcing bar 12, and a second perforated plate 13. The first perforated plate 11, the second perforated plate 13, and the third perforated plate 14 are integrally formed and have holes. The first perforated plate 11, the second perforated plate 13, and the third perforated plate 14 are fixedly provided with holes. The reinforcing bar 12 is fixedly provided on the first perforated plate 11, and the UHPC shell 10 is cast and fixedly provided on the outside of the reinforcing bar 12.

[0052] The construction method for prefabricated connection structures of thin-walled UHPC components with open cross-sections includes the following steps:

[0053] S1. Precast thin-walled UHPC component 1 with first I-shaped cross section: Tie the steel reinforcement skeleton in the mold, fix the embedded parts at the end of the mold according to the design position, then pour the UHPC mixture, and after curing, the first thin-walled UHPC component 1 with the embedded parts at the end is obtained.

[0054] S2. Component transportation and placement: Transport the prefabricated first I-shaped section thin-walled UHPC component 1 to the construction site, hoist and temporarily fix it, so that the ends of the two first I-shaped section thin-walled UHPC components 1 to be connected are aligned and their embedded parts are set opposite each other.

[0055] S3. Installation of the first connector 2: Place the connector made of high-strength steel between or on the outside of the two embedded parts to be connected, so that it fits or corresponds to the connection surface of the two embedded parts.

[0056] S4. Node connection: The connector is fixedly connected to the embedded parts at the ends of the two adjacent first I-shaped cross-section thin-walled UHPC components 1 by bolt connection;

[0057] S5. Quality Inspection: Inspect the construction quality of the connection nodes to ensure that the connection is firm and reliable.

[0058] The working principle of this embodiment is as follows: In use, the reinforcing bars 12 are first tied and fixed, and then fixed to the first perforated plate 11, the second perforated plate 13, and the third perforated plate 14. Afterwards, the UHPC shell 10 is poured. After a certain period, the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 are produced. Then, the first I-shaped thin-walled UHPC component 1 and the second I-shaped thin-walled UHPC component 4 are installed on-site. The mating seat 8 is connected to the bottom of the first I-shaped thin-walled UHPC component 1, and the mating seat 7 is located on the upper part of the lower end of the first I-shaped thin-walled UHPC component 1. The mating seat 7 and the mating... By fixing the base 8 together, the first I-shaped thin-walled UHPC component 1 and the second I-shaped thin-walled UHPC component 4 can be securely connected. Then, the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 are installed on the first I-shaped thin-walled UHPC component 1 and the second I-shaped thin-walled UHPC component 4, aligned by the first perforated plate 11, and then tightened with screws. After that, concrete block 9 is poured, so that the first I-shaped thin-walled UHPC component 1 and the second I-shaped thin-walled UHPC component 4 are formed and fixed with the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6, thus completing the work.

[0059] Example 2

[0060] Based on Example 1, such as Figure 9-12As shown, the first I-shaped cross-section thin-walled UHPC component 1, the second I-shaped cross-section thin-walled UHPC component 4, and the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 are provided with a reinforcing connection structure 15 for fastening the first I-shaped cross-section thin-walled UHPC component 1, the second I-shaped cross-section thin-walled UHPC component 4, and the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6. Through the setting of the reinforcing connection structure 15, the first I-shaped cross-section thin-walled UHPC component 1, the second I-shaped cross-section thin-walled UHPC component 4, and the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 are reinforcedly connected. The connecting distribution frame 19 connects to the first mating groove 18. The first I-shaped thin-walled UHPC component 1 is fixed and then tightened with bolts. The connecting distribution frame 19 is fixedly connected to the second docking mechanism 33, the first docking mechanism 21, the third docking mechanism 34, and the fourth docking mechanism 35 through multiple first ear plates 20 and second ear plates 32. The lower ends of the second docking mechanism 33, the first docking mechanism 21, the third docking mechanism 34, and the fourth docking mechanism 35 are connected to the first connecting piece 2, the second connecting piece 3, the third connecting piece 5, and the fourth connecting piece 6, thereby providing multi-point support and fixing to ensure the stable connection between the first I-shaped thin-walled UHPC component 1, the second I-shaped thin-walled UHPC component 4, and the first connecting piece 2, the second connecting piece 3, the third connecting piece 5, and the fourth connecting piece 6.

[0061] The reinforcing connection structure 15 is symmetrically arranged, and the symmetrical reinforcing connection structure 15 is fixed to the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 by connection.

[0062] The reinforced connection structure 15 includes a first connecting component 16 and a second connecting component 17. The first connecting component 16 and the second connecting component 17 are fixed, and the first connecting component 16 and the second connecting component 17 have the same structure.

[0063] The first connecting component 16 includes a connecting distribution frame 19. The connecting distribution frame 19 has a first mating groove 18 at its center. Multiple second ear plates 32 and first ear plates 20 are provided on the connecting distribution frame 19 for docking and fixing the second docking mechanism 33, the first docking mechanism 21, the third docking mechanism 34, and the fourth docking mechanism 35. First, the connecting distribution frame 19 is installed by connecting it to the first I-shaped cross-section thin-walled UHPC component 1. The connecting distribution frame 19 is adjusted to a designated position via the first mating groove 18. Then, bolts are used to thread the connecting distribution frame 19 through and screw it tightly to the first I-shaped cross-section thin-walled UHPC component 1, thus completing the installation of the connecting distribution frame 19. Next, the docking fixing support 25 is installed. The docking fixing support 25 is connected to the first connecting member 2 and slides on the first connecting member 2 via the second mating groove 26 to be adjusted to a suitable position. Then, the second connecting distribution frame 19 is fixed to the second I-shaped cross-section thin-walled UHPC component 4, and the second docking fixing support 25 is simultaneously fixed to the first connecting member 2. The two docking fixing supports are then installed. The support 25 is fitted with the connecting end 28, and then the threaded fastening bolt 27 is used to achieve alignment and installation. Next, the first connecting reinforcing shaft 23 and the second alignment bracket 30 are installed. The first connecting reinforcing shaft 23 is connected to the first ear plate 20 via the first alignment bracket 22, and then fixed by casting. The second alignment bracket 30 is connected to the second ear plate 32 via the fourth alignment bracket 31, and then also fixed by casting. The lower end of the first connecting reinforcing shaft 23 is fixed to the docking and fixing support 25 via the second alignment bracket 24. The lower end of the second alignment bracket 30 is fixed to the first connecting reinforcing shaft 23 via the fourth alignment bracket 21. The three alignment brackets 29 are fixed to the docking fixed support 25 to provide bottom support and load bearing, thereby connecting and cooperating the first I-shaped cross-section thin-walled UHPC component 1, the second I-shaped cross-section thin-walled UHPC component 4 with the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6 to achieve efficient support and protection, and improve the connection stability of the first I-shaped cross-section thin-walled UHPC component 1, the second I-shaped cross-section thin-walled UHPC component 4 with the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6.

[0064] The first docking mechanism 21 includes a docking fixing support 25. A second mating groove 26 is provided at the lower center of the docking fixing support 25. A connecting end 28 is provided on the side of the docking fixing support 25. A fastening bolt 27 is threaded onto the connecting end 28. The upper end of the docking fixing support 25 is fixed to the second alignment frame 24 through a third alignment frame 29. A first connecting reinforcing shaft 23 is fixed on the second alignment frame 24. A first alignment frame 22 is fixed on the first connecting reinforcing shaft 23. A second alignment frame 30 is fixed on the third alignment frame 29. A fourth alignment frame 31 is fixed on the second alignment frame 30.

[0065] The first alignment frame 22 and the fourth alignment frame 31 are also fixedly connected to the first ear plate 20 and the second ear plate 32 to limit the top of the first docking mechanism 21. The docking fixing support 25 is adapted to the second connecting piece 3 through the second mating groove 26. The connecting distribution frame 19 is fixed to the first I-shaped cross-section thin-walled UHPC component 1 through the first mating groove 18 and bolts.

[0066] In use, the user first installs the connecting bracket 19, connecting it to the first I-shaped thin-walled UHPC component 1. The connecting bracket 19 is adjusted to the designated position via the first mating groove 18. Then, the connecting bracket 19 is threadedly fastened to the first I-shaped thin-walled UHPC component 1 using bolts, thus completing the installation of the connecting bracket 19. Next, the user installs the docking fixing support 25, which is connected to the first connecting member 2. The docking fixing support 25 slides on the first connecting member 2 via the second mating groove 26 and is adjusted to the appropriate position. Then, the second connecting bracket 19 is fixed to the second I-shaped thin-walled UHPC component 4, and the second docking fixing support 25 is fixed to the first connecting member 2. The two docking fixing supports 25 are mated via the connecting end 28. Then, the threaded fastening bolt 27 is used to achieve alignment and installation. Finally, the first connecting reinforcing shaft 23 is installed. The installation of the second alignment frame 30 involves connecting the first connecting and reinforcing shaft 23 to the first ear plate 20 via the first alignment frame 22, followed by casting and fixing. The second alignment frame 30 is connected to the second ear plate 32 via the fourth alignment frame 31, and then also cast and fixed. The lower end of the first connecting and reinforcing shaft 23 is fixed to the docking and fixing support 25 via the second alignment frame 24, and the lower end of the second alignment frame 30 is fixed to the docking and fixing support 25 via the third alignment frame 29, providing bottom support and bearing capacity. This connects and cooperates the first I-shaped section thin-walled UHPC component 1, the second I-shaped section thin-walled UHPC component 4, and the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6, achieving efficient support and protection, and improving the connection stability of the first I-shaped section thin-walled UHPC component 1, the second I-shaped section thin-walled UHPC component 4, and the first connector 2, the second connector 3, the third connector 5, and the fourth connector 6.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assembled connection structure for thin-walled UHPC components with open cross-sections, comprising UHPC components and connectors, characterized in that: The UHPC component is fixedly connected to the connector, and the UHPC component and the connector adopt a dry connection. The first I-shaped thin-walled UHPC component (1) has a strengthening connection function. The first I-shaped thin-walled UHPC component (1) is cast and formed with the UHPC shell (10) through the steel bar (12) and the second perforated plate (13). The first I-shaped thin-walled UHPC component (1) is fastened to the docking seat (8) through the first perforated plate (11) to perform assembly docking and thus perform assembly work.

2. The prefabricated connection structure for thin-walled UHPC components with open cross-section according to claim 1, characterized in that: The UHPC component includes a first I-shaped thin-walled UHPC component (1) and a second I-shaped thin-walled UHPC component (4). The connectors include a first connector (2), a second connector (3), a third connector (5), and a fourth connector (6). The first I-shaped thin-walled UHPC component (1) and the second I-shaped thin-walled UHPC component (4) are fixed together. The first connector (2), the second connector (3), the third connector (5), and the fourth connector (6) are fixed together at the connection position of the first I-shaped thin-walled UHPC component (1) and the second I-shaped thin-walled UHPC component (4). The first connector (2), the second connector (3), the third connector (5), and the fourth connector (6) are symmetrically distributed. The first I-shaped cross-section thin-walled UHPC component (1) and the second I-shaped cross-section thin-walled UHPC component (4) are provided with a mating seat (8), and the mating seat (8) is adapted to the mating seat (7). The mating seat (7) is fixed on the second I-shaped cross-section thin-walled UHPC component (4). The first I-shaped cross-section thin-walled UHPC component (1) and the second I-shaped cross-section thin-walled UHPC component (4) are fixed by aligning the mating seat (7) and the mating seat (8). Both the first I-shaped thin-walled UHPC component (1) and the second I-shaped thin-walled UHPC component (4) are provided with mating seats (8). When the first I-shaped thin-walled UHPC component (1) and the second I-shaped thin-walled UHPC component (4) are combined, the two mating seats (8) are flush and used for the mating and fixing of the first connector (2), the second connector (3), the third connector (5), and the fourth connector (6).

3. The prefabricated connection structure for thin-walled UHPC components with open cross-section according to claim 2, characterized in that: The first I-shaped thin-walled UHPC component (1), the second I-shaped thin-walled UHPC component (4), and the first connector (2), the second connector (3), the third connector (5), and the fourth connector (6) are fixed by concrete blocks (9) for corrosion protection.

4. The prefabricated connection structure for thin-walled UHPC components with open cross-section according to claim 3, characterized in that: The first connector (2) includes a UHPC shell (10), a first perforated plate (11), a reinforcing bar (12), and a second perforated plate (13). The first perforated plate (11), the second perforated plate (13), and the third perforated plate (14) are integrally formed and have holes. The first perforated plate (11), the second perforated plate (13), and the third perforated plate (14) are fixedly provided with reinforcing bars (12). The UHPC shell (10) is cast and fixedly provided on the outside of the reinforcing bars (12).

5. The prefabricated connection structure for thin-walled UHPC components with open cross-section according to claim 4, characterized in that: The first I-shaped cross-section thin-walled UHPC component (1), the second I-shaped cross-section thin-walled UHPC component (4), and the first connector (2), the second connector (3), the third connector (5), and the fourth connector (6) are provided with a reinforcing connection structure (15) for fastening the first I-shaped cross-section thin-walled UHPC component (1), the second I-shaped cross-section thin-walled UHPC component (4) to the first connector (2), the second connector (3), the third connector (5), and the fourth connector (6); The reinforced connection structure (15) is symmetrically arranged, and the symmetrical reinforced connection structure (15) is fixed by connecting to the first connector (2), the second connector (3), the third connector (5), and the fourth connector (6).

6. The prefabricated connection structure for thin-walled UHPC components with open cross-section according to claim 5, characterized in that: The reinforced connection structure (15) includes a first connecting component (16) and a second connecting component (17). The first connecting component (16) and the second connecting component (17) are fixed, and the first connecting component (16) and the second connecting component (17) have the same structure.

7. The prefabricated connection structure for thin-walled UHPC components with open cross-section according to claim 6, characterized in that: The first connecting component (16) includes a connecting distribution frame (19), the connecting distribution frame (19) has a first mating groove (18) in the center, and the connecting distribution frame (19) is provided with a plurality of second ear plates (32) and a first ear plate (20) for docking and fixing of the second docking mechanism (33), the first docking mechanism (21), the third docking mechanism (34), and the fourth docking mechanism (35).

8. The prefabricated connection structure for thin-walled UHPC components with open cross-section according to claim 7, characterized in that: The first docking mechanism (21) includes a docking fixing support (25), a second mating groove (26) is provided at the lower center of the docking fixing support (25), a connecting end (28) is provided on the side of the docking fixing support (25), a fastening bolt (27) is threaded on the connecting end (28), the upper end of the docking fixing support (25) is fixed to the second alignment frame (24) through the third alignment frame (29), a first connecting reinforcing shaft (23) is fixed on the second alignment frame (24), a first alignment frame (22) is fixed on the first connecting reinforcing shaft (23), a second alignment frame (30) is fixed on the third alignment frame (29), and a fourth alignment frame (31) is fixed on the second alignment frame (30).

9. The prefabricated connection structure for thin-walled UHPC components with open cross-section according to claim 8, characterized in that: The first alignment frame (22) and the fourth alignment frame (31) are also fixedly connected to the first ear plate (20) and the second ear plate (32) to limit the top of the first docking mechanism (21). The docking fixing support (25) is adapted to the second connector (3) through the second mating groove (26). The connecting distribution frame (19) is fixed to the first I-shaped cross-section thin-walled UHPC component (1) through the first mating groove (18) and bolts.

10. A construction method for an open-section thin-walled UHPC component prefabricated connection structure, applicable to the open-section thin-walled UHPC component prefabricated connection structure described in claim 3, characterized in that... Includes the following steps: S1. Precast thin-walled UHPC component with first I-shaped cross section (1): Tie the steel reinforcement skeleton in the mold, fix the embedded parts at the end of the mold according to the design position, then pour the UHPC mixture, and after curing, the first thin-walled UHPC component with embedded parts at the end is obtained (1). S2. Component transportation and positioning: Transport the prefabricated first I-shaped section thin-walled UHPC component (1) to the construction site, hoist and temporarily fix it, so that the ends of the two first I-shaped section thin-walled UHPC components (1) to be connected are aligned and their embedded parts are set opposite to each other; S3. Installation of the first connector (2): Place the connector made of high-strength steel between or outside the two embedded parts to be connected, so that it fits or corresponds to the connection surface of the two embedded parts. S4. Node connection: The connector is fixedly connected to the embedded parts at the ends of the two adjacent first I-shaped cross-section thin-walled UHPC components (1) by bolt connection; S5. Quality Inspection: Inspect the construction quality of the connection nodes to ensure that the connection is firm and reliable.

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