Fabricated concrete wallboard second-order energy consumption connection joint structure and assembly construction method thereof

Abstract

The invention discloses a fabricated concrete wallboard second-order energy dissipation connection node structure and an assembly construction method thereof, and relates to the technical field of fabricated building structures, the fabricated concrete wallboard second-order energy dissipation connection node structure comprises a first prefabricated concrete wallboard, a second prefabricated concrete wallboard, a movable retaining ring, a hanging ring and ultra-high performance concrete (UHPC); according to the energy consumption connection node structure, the hanging rings in the U-shaped grooves are fixedly connected through the movable retaining rings, so that the first prefabricated concrete wall plate and the second prefabricated concrete wall plate are fixedly connected, and finally, gaps between the two corresponding U-shaped grooves are filled with ultra-high performance concrete (UHPC) to form a whole. According to the connecting joint, in the assembling construction process, the prefabricated concrete wall plates can be hoisted and transported through the hoisting rings, the construction time and cost are reduced, when the connecting joint is subjected to the horizontal force effect, the UHPC firstly cracks to consume energy, and when the UHPC loses the effect, the UHPC cannot crack to consume energy; and the whole formed by the movable retaining ring and the lifting ring consumes energy again to meet the requirement of second-order energy consumption.

Description

Technical Field

[0001] This invention relates to prefabricated building structure technology, specifically to a prefabricated concrete wall panel second-order energy-dissipating connection node structure and its assembly and construction method. Background Technology

[0002] With the development of the construction industry, prefabricated buildings have been widely used in modern architecture due to their advantages such as fast construction speed, easy quality control, energy saving, and environmental protection. As an important component of prefabricated buildings, the performance of the wall panel connection nodes in prefabricated concrete structures directly affects the safety, stability, and seismic performance of the entire building structure. Therefore, strengthening the energy dissipation capacity of these nodes is imperative.

[0003] Among the existing connection methods for prefabricated concrete wall panels, wet connection and dry connection are common. However, traditional connection methods often have problems such as complex node structure, high construction precision requirements, and difficulty in on-site installation during the design and construction process, which hinders the development of prefabricated building technology. In addition, the energy dissipation mechanism of traditional connection methods is simple, and they mostly rely on the yield energy dissipation of a single material or component. Under repeated loads such as earthquakes, they are prone to brittle failure or rapid decay of energy dissipation capacity, which makes it difficult to effectively buffer and dissipate huge amounts of energy and cannot meet the requirements of high-order seismic fortification. Furthermore, most connection nodes are not integrated with the hoisting function, and additional hoisting points are required, which increases the complexity and cost of the components. Summary of the Invention

[0004] The purpose of this invention is to provide a two-stage energy-dissipating connection node structure for prefabricated concrete wall panels and its assembly and construction method, so as to solve the many shortcomings of existing prefabricated concrete wall panel connection nodes in terms of energy dissipation capacity, construction convenience, and reliability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated concrete wall panel second-order energy-dissipating connection node structure and its assembly construction method, comprising a first prefabricated concrete wall panel, a second prefabricated concrete wall panel, a movable buckle, a lifting ring, and ultra-high performance concrete (UHPC).

[0006] The first precast concrete wall panel includes a main body panel, and a first U-shaped groove and a second U-shaped groove are provided on the side surface of the main body panel. Lifting rings are arranged in the first U-shaped groove and the second U-shaped groove, and the lifting rings are fixedly connected to the main body panel of the first precast concrete wall panel by means of embedded parts.

[0007] The second precast concrete wall panel includes a main panel of the second precast concrete wall panel, and a third U-shaped groove and a fourth U-shaped groove are provided on the side surface of the main panel of the second precast concrete wall panel. Lifting rings are arranged in the third U-shaped groove and the fourth U-shaped groove, and the lifting rings are fixedly connected to the main panel of the second precast concrete wall panel by means of embedded parts.

[0008] The movable buckle includes a nut, a bolt, and a connecting ring, used to fix the lifting ring in the U-shaped groove of the first precast concrete wall panel to the lifting ring in the corresponding U-shaped groove of the second precast concrete wall panel. The bolt is set on the connecting ring, and the nut is threaded onto the bolt.

[0009] The ultra-high performance concrete (UHPC) is filled in the gap between the corresponding U-shaped grooves of the first precast concrete wall panel and the second precast concrete wall panel to form an integral connection node.

[0010] Furthermore, the shapes and sizes of the first U-shaped groove, the second U-shaped groove, the third U-shaped groove, and the fourth U-shaped groove are adapted to each other, and the first U-shaped groove and the third U-shaped groove are arranged opposite each other, and the second U-shaped groove and the fourth U-shaped groove are arranged opposite each other, so as to form a gap that can be filled with the ultra-high performance concrete (UHPC) when connected.

[0011] Furthermore, the lifting ring is made of high-strength metal and has a distinct yield stage. It is fixed in the U-shaped groove as an embedded part to ensure that it does not fall off or loosen when subjected to tensile force.

[0012] Furthermore, the ultra-high performance concrete (UHPC) is also used to fill the gaps at the connection between the first and second precast concrete wall panels to enhance the integrity and strength of the connection joint.

[0013] Furthermore, the ultra-high performance concrete (UHPC) is tightly bonded to the inner wall of the U-shaped channel when filling the gaps, and can generate relative displacement cracks when subjected to external forces, thus achieving first-order energy dissipation.

[0014] Furthermore, the movable buckle is made of high-strength alloy material, and its structural design is compatible with the lifting ring, so that it can be firmly fastened to the lifting ring. When the ultra-high performance concrete (UHPC) loses its function, the movable buckle and the lifting ring, as a whole, generate relative displacement when subjected to external force, thereby realizing second-order energy dissipation.

[0015] A method for assembling and constructing a prefabricated concrete wall panel second-order energy-dissipating connection node structure includes the following steps:

[0016] S1. Precast first precast concrete wall panel: When making the main body of the first precast concrete wall panel, a first U-shaped groove and a second U-shaped groove are reserved on its side surface, and the lifting ring is fixed in the U-shaped groove by means of embedded parts;

[0017] S2. Precast second precast concrete wall panel: When making the main body of the second precast concrete wall panel, a third U-shaped groove and a fourth U-shaped groove are reserved on its side surface, and the lifting ring is fixed in the U-shaped groove by means of embedded parts;

[0018] S3. Lifting, transportation and positioning: Transport the precast first and second precast concrete wall panels to the construction site and lift them to the designated installation positions.

[0019] S4. Connection and Fixing: The lifting rings in the U-shaped groove of the first precast concrete wall panel and the corresponding lifting rings in the U-shaped groove of the second precast concrete wall panel are fixedly connected by the movable buckles to initially fix the two wall panels.

[0020] S5. Filling with Ultra-High Performance Concrete (UHPC): Fill the gap between the corresponding U-shaped grooves of the first and second precast concrete wall panels with ultra-high performance concrete (UHPC). After the ultra-high performance concrete (UHPC) reaches the design strength, complete the assembly construction of the connection node.

[0021] Furthermore, in step S4, the movable buckle is fastened with nuts and bolts to ensure a secure connection of the lifting ring.

[0022] Furthermore, in step S5, the ultra-high performance concrete (UHPC) is filled using a pressure injection method to ensure a tight bond with the inner wall of the U-shaped groove.

[0023] Compared with existing technologies, this invention provides a second-order energy-dissipating connection node structure for prefabricated concrete wall panels and its assembly and construction method. Through the second-order energy-dissipating mechanism of the prefabricated concrete wall panel connection node structure, in the initial stage of structural stress, ultra-high performance concrete (UHPC) utilizes its own cracking energy to generate relative displacement, achieving first-order energy dissipation and effectively buffering the impact of external forces on the structure. When the energy dissipation of the UHPC reaches a certain limit, the movable buckle and lifting ring work together, as a whole, generating relative displacement when subjected to external forces to achieve second-order energy dissipation.

[0024] The lifting ring is made of high-strength metal material with a clear yield stage. It is set in the form of embedded parts corresponding to the U-shaped groove on the side of the main body of the precast concrete wall panel. During the prefabrication process, it is tightly connected with the main body of the wall panel to ensure that it will not fall off or loosen when subjected to tensile force, thus providing a solid foundation for the connection of precast concrete wall panels. At the same time, the lifting ring can be used for the hoisting and transportation of precast concrete wall panels.

[0025] During the assembly and construction process, the precast concrete wall panels are prefabricated in the factory, and only hoisting, connection, and on-site pouring of ultra-high performance concrete (UHPC) are required at the connection nodes. On-site connection is relatively simple, using movable fasteners to fix the lifting rings, which is easy for construction workers to master and significantly shortens construction time. Furthermore, by reducing on-site wet work, it is less affected by external factors such as weather, making the construction progress more controllable and effectively improving construction efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0028] Figure 2 This is a front view structural diagram provided for an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the movable buckle provided in an embodiment of the present invention;

[0030] Figure 4 Structural schematic diagrams of the first and second precast concrete wall panels provided in embodiments of the present invention;

[0031] Figure 5 for Figure 1 A magnified view of a portion of the image;

[0032] Figure 6 A cross-sectional view of the energy-consuming connection node structure provided in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of second-order energy consumption provided in an embodiment of the present invention;

[0034] Figure 8 This is a flowchart illustrating the assembly and construction method provided in an embodiment of the present invention.

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

[0036] 1. First precast concrete wall panel; 2. Second precast concrete wall panel; 3. First U-shaped channel; 4. Third U-shaped channel; 5. Second U-shaped channel; 6. Fourth U-shaped channel; 7. Lifting ring; 8. Movable buckle; 81. Connecting ring; 82. Nut; 83. Bolt; 9. Ultra-high performance concrete (UHPC). Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] As attached Figure 1 To be continued Figure 7 As shown:

[0039] Example 1:

[0040] This invention provides a prefabricated concrete wall panel second-order energy-dissipating connection node structure and its assembly construction method, including a first prefabricated concrete wall panel 1, a second prefabricated concrete wall panel 2, a movable buckle 8, a lifting ring 7, and ultra-high performance concrete (UHPC) 9.

[0041] The first precast concrete wall panel 1 includes a main panel portion of the first precast concrete wall panel 1, on which a first U-shaped groove 3 and a second U-shaped groove 5 are pre-formed. Similarly, the second precast concrete wall panel 2 includes a main panel portion of the second precast concrete wall panel 2, on which a third U-shaped groove 4 and a fourth U-shaped groove 6 are pre-formed. The first U-shaped groove 3, the second U-shaped groove 5, the third U-shaped groove 4 and the fourth U-shaped groove 6 have the same shape and size, and are all semi-closed grooves with openings facing the side of the wall panel.

[0042] Each U-shaped groove is equipped with a lifting ring 7, which is preferably a ring made of Q345 high-strength steel with a distinct yield stage. During the prefabrication stage of the wall panel, the lower half of the lifting ring 7 is pre-cast and embedded in the main body of the concrete wall panel through embedded parts (e.g., welded or tied to the steel mesh in the groove), while the upper part protrudes into the groove space of the U-shaped groove, providing an interface for subsequent connection. This design ensures that the lifting ring 7 is fixed to the main body of the wall panel as one, and will not fall off or loosen when subjected to tensile force. At the same time, the lifting ring 7 can be used as a lifting point during the wall panel production, transportation and on-site hoisting stages, realizing functional integration. The surface of the lifting ring 7 is treated with special anti-corrosion treatment, such as hot-dip galvanizing or spraying epoxy zinc-rich primer. This treatment significantly improves the corrosion resistance of the lifting ring 7 in humid or outdoor environments, and extends the service life of the entire connection node. It is particularly suitable for coastal buildings or underground projects with high durability requirements.

[0043] The movable buckle 8 is the core mechanical connection component of this node, and its specific structure is as follows: Figure 3As shown, it includes a U-shaped connecting ring 81, a bolt 83, and a nut 82. The connecting ring 81 is preferably forged from high-strength alloy steel, which has extremely high strength and toughness. The cross-sectional shape of the connecting ring 81 is optimized from a circle to an ellipse. This design increases the contact area between the connecting ring 81 and the lifting ring 7, thereby reducing the contact stress and making the stress more uniform. At the same time, the elliptical cross-section can provide a higher section modulus under the same material, which enhances the bending resistance of the connecting ring 81 and further improves the reliability and safety of the connection node. It is particularly suitable for buildings that bear greater loads or have higher seismic fortification requirements.

[0044] During on-site installation, the first precast concrete wall panel 1 and the second precast concrete wall panel 2 are hoisted into place, with the first U-shaped groove 3 facing the third U-shaped groove 4 and the second U-shaped groove 5 facing the fourth U-shaped groove 6. Then, the U-shaped connecting ring 81 of the movable buckle 8 is passed through the lifting ring 7 in the first U-shaped groove 3 and the lifting ring 7 in the opposite third U-shaped groove 4 (similarly, it is passed through the lifting ring 7 in the second U-shaped groove 5 and the fourth U-shaped groove 6 on the other side). Next, the bolt 83 is passed through the openings at both ends of the connecting ring 81 and the nut 82 is tightened, thereby locking the connecting ring 81 and making it firmly fastened to the two lifting rings 7. Through this operation, the lifting rings 7 belonging to the two wall panels are rigidly connected into a whole by the movable buckle 8, realizing the initial fixation between the two wall panels.

[0045] Finally, pressure injection is performed on the cavity formed by the docking of the first U-shaped groove 3 and the third U-shaped groove 4 (and the cavity formed by the docking of the second U-shaped groove 5 and the fourth U-shaped groove 6) to fill it with ultra-high performance concrete (UHPC) 9. UHPC has extremely high strength and toughness, and its flow properties ensure that the filling is dense and tightly bonded to the inner wall of the U-shaped groove and all metal parts. After the UHPC reaches the design strength, it forms a high-strength and highly integrated connection node together with the movable buckle 8 and the lifting ring 7.

[0046] Working principle: First-order energy consumption (corresponding to...) Figure 7 (Middle OA section): When the connection node is subjected to external forces such as horizontal seismic force or wind load, the ultra-high performance concrete (UHPC) 9, due to its excellent tensile and deformation capacity, first absorbs and dissipates energy through the generation and development of micro-cracks, effectively buffering the impact on the main slab structure. In this stage, the node stiffness is mainly provided by UHPC.

[0047] Second-order energy consumption (corresponding to) Figure 7(Channels BC, CD, and DE): When the external force continues to increase, causing severe cracking or even local crushing of the UHPC and rendering it "ineffective," the metal connection formed by the movable buckle 8 and the lifting ring 7 becomes the main force transmission and energy dissipation path. This entire metal structure will enter the elastoplastic working stage: first, it will undergo elastic deformation (section BC), then enter the yielding stage (section CD, large energy dissipation), and then possibly enter the strengthening stage (section DE), until final failure. This process dissipates huge amounts of energy through the plastic deformation of the metal, providing a reliable second line of defense against seismic damage to the structure and greatly improving the ductility and seismic performance of the joints.

[0048] As attached Figure 8 As shown:

[0049] Example 2:

[0050] This embodiment is basically the same as the previous embodiment, except that the assembly construction method of a prefabricated concrete wall panel second-order energy-dissipating connection node structure includes the following steps:

[0051] S1, Precast first precast concrete wall panel 1:

[0052] When the main body of the first precast concrete wall panel 1 is prefabricated in the factory, a special mold is used to precisely reserve the first U-shaped groove 3 and the second U-shaped groove 5 on one of its vertical side surfaces. Before the concrete is poured, the lower half of the high-strength metal lifting ring 7 is pre-positioned and fixed on the steel reinforcement skeleton in the U-shaped groove, ensuring that the upper half of the lifting ring 7 is exposed in the groove space of the U-shaped groove. After the pouring and curing are completed, the lifting ring 7 is firmly combined with the main body of the wall panel in the form of an embedded part to form an integrated component.

[0053] S2, Precast second precast concrete wall panel 2:

[0054] Using the same process and standards as in step S1, a second precast concrete wall panel 2 is prefabricated. On its vertical side surface corresponding to the first precast concrete wall panel 1, a third U-shaped groove 4 and a fourth U-shaped groove 6 are reserved, and a fixing ring 7 is pre-embedded in the same way. Through standardized production, it is ensured that the positions of the U-shaped grooves and the fixing ring 7 on the two wall panels can be accurately matched.

[0055] S3. Lifting, transportation, and positioning:

[0056] The first precast concrete wall panel 1 and the second precast concrete wall panel 2, which are prefabricated in the factory, are transported to the construction site. Using the pre-embedded lifting rings 7 on the wall panels as lifting points, the two wall panels are hoisted to the designed installation positions using lifting equipment and preliminarily positioned so that the first U-shaped groove 3 is opposite to the third U-shaped groove 4, and the second U-shaped groove 5 is opposite to the fourth U-shaped groove 6.

[0057] S4. Connection and fixation:

[0058] The operator passes the U-shaped connecting ring 81 of the movable buckle 8 through the lifting ring 7 in the U-shaped groove on the first precast concrete wall panel 1 and the corresponding lifting ring 7 in the U-shaped groove on the second precast concrete wall panel 2 (for example, the lifting ring 7 of the first U-shaped groove 3 and the third U-shaped groove 4). Then, the bolt 83 is passed through the openings at both ends of the connecting ring 81 and tightened with the nut 82.

[0059] When tightening nut 82, it is advisable to use tools such as torque wrenches to ensure that the designed torque value is reached, so that the connecting ring 81 tightly hugs the two lifting rings 7 to form a rigid connection without loosening. This operation is carried out simultaneously on the left and right sides of the two wall panels, and the two wall panels are initially connected into a whole by the movable buckle 8.

[0060] S5, Infilled Ultra-High Performance Concrete (UHPC) 9:

[0061] After the active buckle 8 is connected and the wall panel position is verified to be correct, the ultra-high performance concrete (UHPC) 9 filling operation is carried out.

[0062] Using pressure grouting equipment, the mixed ultra-high performance concrete (UHPC) 9 grout is injected from the reserved grouting hole or the bottom of the groove into the closed gap formed by two opposing U-shaped grooves. Pressure grouting ensures that the UHPC flows smoothly in the complex cavity, completely fills all gaps, and tightly wraps the internal lifting ring 7 and movable buckle 8, expelling air and achieving a perfect bond with the concrete groove wall. The grouting operation should be carried out continuously until the grout flows out evenly from the vent hole. After filling, the UHPC is cured as necessary. Once it reaches the design strength, the connection node assembly construction is considered complete. At this time, the node, consisting of UHPC and metal connectors, forms a whole with second-order energy dissipation capacity.

[0063] Working principle: This construction method adopts the process of "mechanical connection first, structural grouting and then fixing". First, the wall panel is quickly and accurately positioned and initially fixed by the movable buckle 8, which solves the problem of difficult on-site installation. Then, UHPC is pressure-grown to form a highly integrated structural connection. This method is convenient and efficient to construct, and the final node has excellent seismic performance with the first-order energy dissipation of UHPC and the second-order energy dissipation of metal connectors.

[0064] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A two-stage energy-dissipating connection node structure for prefabricated concrete wall panels, characterized in that, include: First precast concrete wall panel (1), second precast concrete wall panel (2), movable buckle (8), lifting ring (7) and ultra-high performance concrete (UHPC) (9); The first precast concrete wall panel (1) includes a main body panel of the first precast concrete wall panel, and a first U-shaped groove (3) and a second U-shaped groove (5) are provided on the side surface of the main body panel of the first precast concrete wall panel. A lifting ring (7) is arranged in the first U-shaped groove (3) and the second U-shaped groove (5). The lifting ring (7) is fixedly connected to the main body panel of the first precast concrete wall panel (1) by means of embedded parts. The second precast concrete wall panel (2) includes a main body panel of the second precast concrete wall panel, and a third U-shaped groove (4) and a fourth U-shaped groove (6) are provided on the side surface of the main body panel of the second precast concrete wall panel. A lifting ring (7) is arranged in the third U-shaped groove (4) and the fourth U-shaped groove (6). The lifting ring (7) is fixedly connected to the main body panel of the second precast concrete wall panel (2) by means of embedded parts. The movable buckle (8) includes a nut (82), a bolt (83) and a connecting ring (81), which is used to fix the lifting ring (7) in the U-shaped groove of the first precast concrete wall panel (1) to the lifting ring (7) in the corresponding U-shaped groove of the second precast concrete wall panel (2). The bolt (83) is set on the connecting ring (81), and the nut (82) is threaded onto the bolt (83). The ultra-high performance concrete (UHPC) (9) fills the gap between the corresponding U-shaped grooves of the first precast concrete wall panel (1) and the second precast concrete wall panel (2) to form an integral connection node.

2. The prefabricated concrete wall panel second-order energy-dissipating connection node structure according to claim 1, characterized in that, The shapes and sizes of the first U-shaped groove (3), the second U-shaped groove (5), the third U-shaped groove (4) and the fourth U-shaped groove (6) are adapted to each other, and the first U-shaped groove (3) and the third U-shaped groove (4) are arranged opposite to each other, and the second U-shaped groove (5) and the fourth U-shaped groove (6) are arranged opposite to each other, so as to form a gap that can be filled with the ultra-high performance concrete (UHPC) (9) when connected.

3. The prefabricated concrete wall panel second-order energy-dissipating connection node structure according to claim 1, characterized in that, The lifting ring (7) is made of high-strength metal and has a clear yield stage. It is fixed in the U-shaped groove in the form of a pre-embedded part to ensure that it does not fall off or loosen when subjected to tensile force.

4. The prefabricated concrete wall panel second-order energy-dissipating connection node structure and its assembly construction method according to claim 1, characterized in that, The ultra-high performance concrete (UHPC) (9) is also filled in the gaps at the connection between the first precast concrete wall panel (1) and the second precast concrete wall panel (2) to enhance the integrity and strength of the connection joint.

5. The prefabricated concrete wall panel second-order energy-dissipating connection node structure according to claim 1, characterized in that, The ultra-high performance concrete (UHPC) (9) is tightly bonded to the inner wall of the U-shaped channel when filling the gap, and can generate relative displacement cracks when subjected to external forces, thus achieving first-order energy dissipation.

6. The prefabricated concrete wall panel second-order energy-dissipating connection node structure according to claim 1, characterized in that, The movable buckle (8) is made of high-strength alloy material. Its structural design is compatible with the lifting ring (7) and can be firmly fastened to the lifting ring (7). When the ultra-high performance concrete (UHPC) (9) loses its function, the movable buckle (8) and the lifting ring (7) as a whole generate relative displacement when subjected to external force, realizing second-order energy dissipation.

7. A method for assembling and constructing a two-stage energy-dissipating connection node structure for prefabricated concrete wall panels, characterized in that, The connection node structure according to any one of claims 1-6 includes the following steps: S1. Precast first precast concrete wall panel (1): When making the main body of the first precast concrete wall panel (1), a first U-shaped groove (3) and a second U-shaped groove (5) are reserved on its side surface, and the lifting ring (7) is fixed in the U-shaped groove by means of embedded parts; S2, Precast second precast concrete wall panel (2): When making the main body of the second precast concrete wall panel (2), a third U-shaped groove (4) and a fourth U-shaped groove (6) are reserved on its side surface, and the lifting ring (7) is fixed in the U-shaped groove by means of embedded parts; S3. Lifting, transportation and positioning: Transport the precast first precast concrete wall panel (1) and the second precast concrete wall panel (2) to the construction site and lift them to the predetermined installation position; S4. Connection and fixing: The lifting ring (7) in the U-shaped groove of the first precast concrete wall panel (1) and the corresponding lifting ring (7) in the U-shaped groove of the second precast concrete wall panel (2) are fixedly connected by the movable buckle (8) to fix the two wall panels initially. S5. Filling with ultra-high performance concrete (UHPC) (9): Fill the gap between the U-shaped grooves of the first precast concrete wall panel (1) and the second precast concrete wall panel (2) with ultra-high performance concrete (UHPC) (9). After the ultra-high performance concrete (UHPC) (9) reaches the design strength, complete the assembly construction of the connection node.

8. The assembly construction method according to claim 7, characterized in that, In step S4, the movable buckle (8) is fastened by nuts (82) and bolts (83) to ensure that the lifting ring (7) is securely connected.

9. The assembly construction method according to claim 7, characterized in that, In step S5, the ultra-high performance concrete (UHPC) (9) is filled by pressure injection to ensure a tight bond with the inner wall of the U-shaped groove.

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