Prestressed energy storage rib

Abstract

The invention discloses a prestressed energy storage rib, and relates to the technical field of prestressed structure engineering and building energy storage, in particular to a prestressed concrete beam, and a prestressed energy storage rib body is arranged in the prestressed concrete beam. When the prestressed energy storage rib is used, the prestressed energy storage rib body is composed of a high-strength hollow FRP rib and a battery unit packaged in the high-strength hollow FRP rib. The anchoring electrical integrated end is a core innovation, integrates a mechanical anchoring module, an electrical insulation module and a circuit interface module, disperses anchoring stress through a local reinforcing structure to protect an internal battery cell, realizes electrical isolation by using an insulation isolation sleeve, and ensures reliable connection of a tensioned circuit by using a connecting piece with elastic compensation. The invention further provides a construction method of tensioning and anchoring first and then electrical connection, integration of a building structure and energy storage is achieved, and safe and reliable self-energy-storage capacity is given to major infrastructures.

Description

Technical Field

[0001] This invention relates to the field of prestressed structural engineering and building energy storage technology, specifically to a prestressed energy storage tendon. Background Technology

[0002] Prestressed technology is the cornerstone of modern civil engineering. By pre-stressing high-strength reinforcing bars, it can significantly improve the crack resistance, stiffness, and load-bearing capacity of concrete structures. Meanwhile, with the widespread adoption of renewable energy, the demand for distributed energy storage within buildings is becoming increasingly urgent. If these widely distributed high-strength prestressed tendons within infrastructure could be equipped with energy storage functions, achieving integrated "structure-energy storage," it would greatly promote building energy conservation and the development of smart grids.

[0003] However, using energy storage bars directly as prestressing tendons faces three inherent and interrelated technical bottlenecks: 1. Anchorage conflict problem: Prestressed anchors need to transfer prestress to concrete through huge clamping forces. This strong concentrated force can severely damage the fine internal structure of the energy storage bars, causing the cells to be crushed, resulting in internal short circuits, thereby losing electrical function or even causing thermal runaway, and mechanical properties will also fail.

[0004] 2. Electrical Insulation and Safety Issues: Prestressed anchorages are typically made of metal. When conductive FRP (fiberglass reinforced plastic) bars such as carbon fiber are used as the carrier, the entire bar will be at a high potential after tensioning. If the anchorage is in direct contact with the concrete, a current path will be formed, leading not only to electrical leakage but also to severe electrochemical corrosion. This corrosion will affect both the metal anchorage and the ordinary reinforcing steel, threatening structural safety and posing a risk of electric shock.

[0005] 3. Dynamic Interface Coordination Issues: Prestressing tensioning is a dynamic mechanical process, during which the tendons undergo micron-level slippage or deformation within the anchorage. Traditional rigid electrical connections cannot adapt to these micro-movements and are prone to breakage, loosening, or excessive contact resistance during tensioning, leading to electrical connection failure.

[0006] Currently, existing technical solutions either focus only on the energy storage material itself or only on structural performance, lacking an integrated design solution that can systematically solve the aforementioned "force-electricity conflict".

[0007] Therefore, we propose a prestressed energy storage bar to solve the problems mentioned in the background art. Summary of the Invention

[0008] The purpose of this invention is to provide a prestressed energy storage bar to solve the problem mentioned in the background art, where the mechanical anchoring performance and electrochemical energy storage performance of the energy storage bar are greatly affected during the process of bearing high prestress and long-term service, and there is an irreconcilable contradiction between high-stress anchoring and safety and stable electrical functions.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a prestressed energy storage reinforcement, comprising: A prestressed concrete beam, wherein a prestressed energy storage bar body is provided inside the prestressed concrete beam, and an anchoring electrical integrated terminal is provided at the end of the prestressed energy storage bar body; The prestressed energy storage rib body includes a battery unit, and the prestressed energy storage rib body is composed of a high-strength hollow fiber reinforced composite material rib and at least one battery unit encapsulated in its hollow cavity. The anchoring electrical integrated terminal includes: a mechanical anchoring module, an electrical insulation module, and a circuit interface module; The mechanical anchoring module is used to clamp the end of the prestressed energy storage bar body to transfer and anchor the prestress. The electrical insulation module includes an insulating sleeve fitted outside the mechanical anchoring module, used to electrically isolate the live anchoring area from the external concrete structure. The circuit interface module includes an integrated electrode interface and an elastic compensation connector. The integrated electrode interface is electrically connected to an electrode led out from inside the prestressed energy storage rib body through the elastic compensation connector.

[0010] Preferably, a metal reinforcing sleeve is provided at the end of the prestressed energy storage bar body, and the clamping force of the mechanical anchoring module is mainly applied to this local reinforcing structure to avoid crushing the hollow fiber-reinforced composite material bar and the battery unit inside the prestressed energy storage bar body.

[0011] Preferably, the metal reinforcing sleeve is a metal hoop that is sleeved and fixed to the end of the hollow fiber reinforced composite material rib.

[0012] Preferably, the elastic compensation connector is a Z-shaped flexible metal strip, which can provide deformation compensation when a slight slip occurs after the prestressed energy storage bar body is tensioned and anchored, thus maintaining the reliability of the electrical connection and low resistance.

[0013] Preferably, the mechanical anchoring module is a wedge-type anchor, comprising an anchor cup and two conical wedges.

[0014] Preferably, an elastic buffer thermal conductive layer is filled between the battery cell and the inner wall of the hollow fiber reinforced composite material rib, and the buffer thermal conductive layer is a flexible phase change material.

[0015] Preferably, the insulating sleeve is made of fiber-reinforced polymer, its shape matches the outer contour of the mechanical anchoring module, and it can completely isolate the metal anchor from electrical contact with the external concrete.

[0016] Preferably, one end of the elastic compensation connector is fixedly connected to a wire, and the integrated electrode interface is connected to the other end of the elastic compensation connector.

[0017] A method for constructing and integrating prestressed energy storage bars includes the following steps: S1. Installation in place: Insert the prestressed energy storage bar body into the prestressed duct and install the anchoring electrical integrated terminal at its end. At this time, the circuit interface module is in a standby state without external line connection. S2. Tensioning and Anchoring: The prestressed energy storage bar body is tensioned to the design control stress using tensioning equipment, and then mechanical anchoring is completed by pressing the conical clamps. S3. Electrical connection: After confirming that the mechanical anchor is stable, connect the plug of the external cable to the integrated electrode interface to achieve safe circuit conduction; S4. Anchoring and Protection: Protectively seal the anchoring electrical integrated end and pressure grout the prestressed ducts to form a complete protection system.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. When used, this invention achieves groundbreaking functional integration: for the first time, an electrochemical energy storage system is successfully integrated into a high-stress prestressed tendon, realizing a fundamental leap from "energy-consuming component" to "energy-storage component" in building structure, and providing core technical support for the construction of future green and intelligent infrastructure.

[0019] 2. When using this invention, an intrinsically safe design is adopted: through the triple core design of "stress dispersion", "global insulation" and "dynamic connection", the force-electric conflict is systematically resolved, ensuring the integrity and safety of the electrical system under extreme mechanical loads, and the system has extremely high robustness.

[0020] 3. When using this invention, it combines excellent constructability and compatibility: the proposed "mechanical first, electrical later" process flow is logically clear and the responsibilities are clearly defined. It separates the high-risk electrical operation from the high-risk mechanical operation in time, which greatly reduces the construction complexity and safety risks, and can be seamlessly integrated into the existing prestressed construction system.

[0021] 4. When in use, this invention has long-term service performance: the flexible circuit interface and the overall grouting protection design can effectively adapt to the small deformations caused by long-term loads, concrete shrinkage and creep, and temperature changes, ensuring the stability and reliability of the electrical connection throughout the entire life cycle of the structure and avoiding connection failure caused by fretting wear.

[0022] 5. When used, this invention achieves efficient thermal management: the buffer layer also has a thermal conductivity function, and the concrete structure with a huge surface area is used as a natural heat sink, providing a passive, low-cost, and efficient thermal management solution for embedded batteries, thereby improving the cycle life and safety of the batteries. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall arrangement of the prestressed energy storage bar body in a prestressed concrete beam according to the present invention. Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the anchoring electrical integration end in a prestressed energy storage bar according to the present invention. Figure 3 This is a detailed enlarged schematic diagram of the clamp-type anchorage and metal reinforcement sleeve in a prestressed energy storage bar according to the present invention. Figure 4 This is a three-dimensional structural schematic diagram of an elastic compensation connector in a prestressed energy storage bar according to the present invention.

[0024] In the picture: 100. Prestressed concrete beam; 200. Prestressed energy storage bar body; 201. Battery unit; 202. Conductor; 203. Buffer heat-conducting layer; 300. Anchoring electrical integrated terminal; 1. Anchor cup; 2. Conical clamp; 3. Insulating isolation sleeve; 4. Metal reinforcement sleeve; 5. Elastic compensation connector; 6. Integrated electrode interface. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1: Please refer to Figures 1-4As shown, the present invention provides a technical solution: a prestressed energy storage bar, comprising: a prestressed concrete beam 100, a prestressed energy storage bar body 200 disposed inside the prestressed concrete beam 100, and an anchoring electrical integrated end 300 disposed at the end of the prestressed energy storage bar body 200; the prestressed energy storage bar body 200 includes a battery unit 201, and the prestressed energy storage bar body 200 is composed of a high-strength hollow fiber reinforced composite material bar and at least one battery unit 201 encapsulated in its hollow cavity; the anchoring electrical integrated end 300 includes: a mechanical anchor The prestressed rebar body 200 comprises a mechanical anchoring module, an electrical insulation module, and a circuit interface module. The mechanical anchoring module clamps the ends of the prestressed rebar body 200 to transmit and anchor the prestress. The electrical insulation module includes an insulating sleeve 3 fitted over the mechanical anchoring module to electrically isolate the energized anchoring area from the external concrete structure. The circuit interface module includes an integrated electrode interface 6 and an elastic compensation connector 5. The integrated electrode interface 6 is electrically connected to an electrode extending from inside the prestressed rebar body 200 via the elastic compensation connector 5. A metal reinforcing sleeve 4 is provided at the end of the prestressed energy storage bar 200. The clamping force of the mechanical anchoring module mainly acts on this local reinforcement structure to avoid crushing the hollow fiber reinforced composite material bar inside the prestressed energy storage bar body 200 and the internal battery unit 201. The metal reinforcing sleeve 4 is a metal sleeve that is sleeved and fixed to the end of the hollow fiber reinforced composite material bar. The elastic compensation connector 5 is a Z-shaped flexible metal strip that can provide deformation compensation when a small slippage occurs after the prestressed energy storage bar body 200 is tensioned and anchored, maintaining the reliability of the electrical connection and low resistance. The fixed module is a clip-type anchor, including an anchor cup 1 and two conical clips 2. An elastic buffer heat-conducting layer 203 is filled between the battery unit 201 and the inner wall of the hollow fiber-reinforced composite material rib. The buffer heat-conducting layer 203 is a flexible phase change material. The insulating isolation sleeve 3 is made of fiber-reinforced polymer. Its shape matches the outer contour of the mechanical anchor module and can completely isolate the metal anchor from the electrical contact with the external concrete. One end of the elastic compensation connector 5 is fixedly connected to a wire 202, and the integrated electrode interface 6 is connected to the other end of the elastic compensation connector 5.

[0027] In use, the prestressed energy storage rib body 200 includes a high-strength hollow FRP rib, an embedded battery cell 201, and a buffer thermal conductive layer 203. The high-strength hollow FRP rib uses T700 grade or higher high-modulus carbon fiber, glass fiber, or aramid fiber as reinforcement, and high-temperature resistant, high-toughness epoxy resin or vinyl ester resin as the matrix, manufactured as a thin-walled hollow tubular rib through pultrusion or winding processes. Its tensile strength is not less than 1800 MPa, and its elastic modulus is not less than 150 GPa, to meet the mechanical requirements of the prestressed rib. The embedded battery cell 201 is located inside the cavity of the hollow rib and can be a wound or stacked lithium-ion battery, solid-state battery, or other cell with high energy density and good rate performance. The battery cell 201 can be a single long cell or multiple standard cells connected in series or parallel. The buffer thermal conductive layer 203 is filled between the battery cell 201 and the inner wall of the FRP rib with elastic silicone or a special thermally conductive gel. This layer can act as a buffer during tension and vibration to protect the battery cell, and it can also conduct the heat generated by the battery during operation to the FRP reinforcement wall in a timely manner, using the concrete body for heat dissipation.

[0028] The present invention also provides an anchoring electrical integrated terminal 300, which is the key to realizing "force-electric synergy". It is composed of three functional modules: mechanical anchoring module, electrical insulation module and circuit interface module.

[0029] Mechanical anchoring module: Mature clamp-type or bonded anchors can be used, with the metal reinforcement sleeve being a locally reinforced structure, introducing the concept of "local reinforcement." For the clamp-type, a high-strength metal sleeve is fitted at the end of the reinforcement, or a reinforced section is formed by locally thickening and densifying fibers. This allows the enormous clamping force of the conical clamp 2 to act on this reinforced area, thus avoiding direct crushing of the reinforcement wall and internal battery cells. For the bonded type, high-strength epoxy mortar is used to fill the anchoring section, and stress is transferred through the shear force of the FRP reinforcement wall, bypassing the direct impact on the battery.

[0030] Electrical insulation module: Includes a precision injection-molded insulating sleeve 3, made of high-performance insulating materials such as PEEK, reinforced nylon, or special ceramics, which tightly wraps around the outside of the metal anchor (such as the anchor cup 1). It completely isolates the entire live anchoring area (including the metal anchor and the end of the reinforcement) from the external concrete environment, fundamentally eliminating leakage current and stray current corrosion paths, and ensuring the electrical safety of the system.

[0031] The circuit interface module includes an integrated electrode interface 6 and an elastic compensation connector 5. Positive and negative conductors 202, extending from inside the reinforcement, are first welded or crimped onto an elastic element (such as a Z-shaped flexible copper strip or a miniature spring contact). This element is then connected to a standardized, splash-proof socket fixed to the insulating sleeve 3. This design allows the elastic connector to absorb displacement through its own deformation during the unavoidable minor retraction of the reinforcement during tensioning and anchoring, ensuring that the electrical connection does not experience mechanical stress concentration and maintaining low resistance and long-term stability.

[0032] In this embodiment, as Figure 1 As shown, in a typical prestressed concrete beam 100, multiple prestressed energy storage bars 200 are arranged according to the designed alignment, with both ends extending out of the beam and equipped with anchoring electrical integrated terminals 300. For example... Figure 2 The diagram illustrates the detailed structure of the anchoring electrical integrated terminal 300. The core of the anchoring electrical integrated terminal 300 lies in the integration of three main modules: a mechanical anchoring module, consisting of an anchor cup 1 and a conical clamp 2, forming a clamp-type anchor; an electrical insulation module, where an insulating sleeve 3 made of PEEK engineering plastic tightly fits around the anchor cup 1, its flange completely separating the anchor cup 1 from the concrete; and a circuit interface module, where a wire 202 extending from inside the reinforcement connects to a Z-shaped phosphor bronze elastic compensation connector 5, which in turn connects to a splash-proof standardized plug (integrated electrode interface 6) fixed to the insulating sleeve. Figure 3 As shown, at the end of the prestressed energy storage tendon body 200, a high-strength alloy steel metal reinforcing sleeve 4 is fixed with an adhesive via an interference fit. During tensioning and anchoring, the serrated inner wall of the conical clamp 2 tightly grips this metal reinforcing sleeve 4, transferring a prestressing force of up to several hundred kN to the tendon body. The enormous clamping force is borne and dispersed by the metal reinforcing sleeve 4, effectively protecting the internal carbon fiber tendon walls and battery units 201. Figure 4 As shown, the elastic compensation connector 5 is designed in a Z-shape with multiple bending segments, which has good longitudinal compression and tensile deformation capabilities. When the tendon retracts at the micron level within the anchorage after tensioning, the connector can freely expand and contract, ensuring that the force acting on the weld point of conductor 202 is minimal, thereby guaranteeing the long-term reliability of the electrical connection. The prestressed energy storage tendon in this invention combines structural bearing and electrochemical energy storage functions, simultaneously satisfying high-stress tensioning and anchoring, long-term reliable service, and safe and stable electrical lead-out. It solves the problem that the mechanical anchoring performance and electrochemical energy storage performance of the energy storage tendon are greatly affected during the process of bearing high prestress and long-term service, and the problem of the irreconcilable contradiction between high-stress anchoring and safe and stable electrical functions, ensuring that the two do not interfere with each other and work together for a long time.

[0033] The construction process is as follows: 1. The prestressed energy storage bar body 200 with metal reinforcing sleeve 4 and pre-connected elastic compensation connector 5 is prefabricated in the factory.

[0034] 2. On site, insert it into the reserved hole in the beam, and put on the insulating isolation sleeve 3, anchor cup 1, and conical clamp 2.

[0035] 3. Use a jack to tension the anchor cup 1, and after reaching the stress, press down the conical clamp 2 to complete the anchoring.

[0036] 4. After confirming that the anchoring is correct, the electrician will insert the plug of the external cable into the socket, and the entire system will be activated.

[0037] 5. Finally, the anchors are sealed and the ducts are grouted to achieve permanent protection.

[0038] Example 2: Figures 1-4 As shown, a construction and integration method for prestressed energy storage bars includes the following steps: Installation and positioning: The prestressed energy storage bar body 200 is inserted into the prestressed duct, and an anchoring electrical integrated terminal 300 is installed at its end. At this time, the circuit interface module is in a standby state without external wiring; Tensioning and anchoring: The prestressed energy storage bar body 200 is tensioned to the design control stress using tensioning equipment, and then mechanical anchoring is completed by pressing the conical clamp 2; Electrical connection: After confirming the stability of mechanical anchoring, the plug of the external cable is connected to the integrated electrode interface 6 to achieve safe circuit conduction; Sealing and protection: The anchoring electrical integrated terminal 300 is protectively sealed, and the prestressed duct is pressure grouted to form a complete protection system.

[0039] In this embodiment, the method for integrating the tensioning and electrical systems of the prestressed energy storage tendons is logically clear, safe, and reliable, and includes the following steps: System Installation: Insert the prestressed energy storage bar body 200 into the pre-set prestressed duct, and install the anchor electrical integrated terminal 300 at both ends to ensure the insulating isolation sleeve 3 is in place. Mechanical Tensioning: Using hydraulic jacks or other tensioning equipment, the bar is tensioned in stages and symmetrically by acting on the anchor cup 1 until the design control stress is reached. Mechanical Anchoring: After tensioning, for wedge-type anchors, the conical wedge 2 is pushed into the anchor cup 1 by a jacking device, tightly engaging with the local reinforcement section of the bar to achieve mechanical anchoring; for bonded anchors, wait for the mortar in the anchoring section to reach its strength. Safe Electrical Connection: After mechanical anchoring is completed and the stress is stable, construction personnel can safely connect the cable plug of the external energy storage system (such as the battery management system BMS, inverter) to the standardized socket with insulation protection on the terminal. This step achieves the final conduction of the circuit. Long-term protection: The connected ends are sealed with protective covers and the entire prestressed duct is pressure-grouted to integrate the energy storage bars, ends and concrete structure into one, achieving the best mechanical protection and durability.

[0040] The overall effect and working principle of the mechanism are as follows: The prestressed energy storage tendon body 200 in the prestressed concrete beam 100 is arranged according to the designed line, with both ends extending out of the beam body and equipped with anchoring electrical integrated terminals 300. The anchoring electrical integrated terminals 300 include a mechanical anchoring module, an electrical insulation module, and a circuit interface module. At the end of the prestressed energy storage tendon body 200, a metal reinforcing sleeve 4 made of high-strength alloy steel is fixed with an interference fit and adhesive. During tensioning and anchoring, the serrated inner wall of the conical clamp 2 tightly bites this metal reinforcing sleeve 4, transferring the prestressing force of up to several hundred kN to the tendon body, while the huge clamping force is borne and dispersed by the metal reinforcing sleeve 4, effectively protecting the internal carbon fiber tendon wall and battery unit 201. The elastic compensation connector 5 is designed as a Z-shape with multiple bending segments, which has good longitudinal compression and tensile deformation capacity. When the tensioning is completed and the tendon retracts at the micron level within the anchorage, the connector can freely expand and contract, ensuring that the force acting on the weld point of conductor 202 is minimal, thus guaranteeing the long-term reliability of the electrical connection. The prestressed energy storage tendon body 200, with a metal reinforcing sleeve 4 and a pre-connected elastic compensation connector 5, is prefabricated in the factory. On-site, it is inserted into the reserved duct of the beam, fitted with an insulating sleeve 3, anchor cup 1, and conical clamp 2. Then, the anchor cup 1 is tensioned using a jack, and after reaching the required stress, the conical clamp 2 is pressed down to complete the anchoring. After confirming that the anchoring is correct, an electrician inserts the plug of the external cable into the socket, activating the entire system. Finally, the anchor is sealed and the duct is grouted to achieve permanent protection.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prestressed energy storage bar, characterized in that, include: A prestressed concrete beam (100) is provided with a prestressed energy storage bar body (200) inside the prestressed concrete beam (100), and an anchoring electrical integrated terminal (300) is provided at the end of the prestressed energy storage bar body (200). The prestressed energy storage rib body (200) includes a battery unit (201), and the prestressed energy storage rib body (200) is composed of a high-strength hollow fiber reinforced composite material rib and at least one battery unit (201) encapsulated in its hollow cavity; The anchoring electrical integrated terminal (300) includes: a mechanical anchoring module, an electrical insulation module, and a circuit interface module; The mechanical anchoring module is used to clamp the end of the prestressed energy storage bar body (200) to transfer and anchor the prestress. The electrical insulation module includes an insulating isolation sleeve (3) fitted outside the mechanical anchoring module, used to electrically isolate the live anchoring area from the external concrete structure; The circuit interface module includes an integrated electrode interface (6) and an elastic compensation connector (5). The integrated electrode interface (6) is electrically connected to an electrode drawn out from inside the prestressed energy storage bar body (200) through the elastic compensation connector (5).

2. The prestressed energy storage bar according to claim 1, characterized in that: The end of the prestressed energy storage bar body (200) is provided with a metal reinforcing sleeve (4). The clamping force of the mechanical anchoring module is mainly applied to the local reinforcing structure to avoid crushing the hollow fiber reinforced composite material bar and the battery unit (201) inside the prestressed energy storage bar body (200).

3. The prestressed energy storage bar according to claim 2, characterized in that: The metal reinforcement sleeve (4) is a metal sleeve that is fitted and fixed to the end of the hollow fiber reinforced composite material tendon.

4. The prestressed energy storage bar according to claim 3, characterized in that: The elastic compensation connector (5) is a Z-shaped flexible metal strip that can provide deformation compensation when the prestressed energy storage bar body (200) undergoes slight slippage after tensioning and anchoring, thus maintaining the reliability of the electrical connection and low resistance.

5. The prestressed energy storage bar according to claim 4, characterized in that: The mechanical anchoring module is a wedge-type anchor, which includes an anchor cup (1) and two conical wedges (2).

6. The prestressed energy storage bar according to claim 5, characterized in that: An elastic buffer thermal conductive layer (203) is filled between the battery cell (201) and the inner wall of the hollow fiber reinforced composite material rib. The buffer thermal conductive layer (203) is a flexible phase change material.

7. The prestressed energy storage bar according to claim 6, characterized in that: The insulating sleeve (3) is made of fiber-reinforced polymer, its shape matches the outer contour of the mechanical anchoring module, and it can completely isolate the metal anchor from the electrical contact with the external concrete.

8. The prestressed energy storage bar according to claim 7, characterized in that: One end of the elastic compensation connector (5) is fixedly connected to a wire (202), and the integrated electrode interface (6) is connected to the other end of the elastic compensation connector (5).

9. A method for the construction and integration of prestressed energy storage bars, characterized in that, The method of using the prestressed energy storage bar according to any one of claims 1-8 includes the following steps: S1. Installation: Insert the prestressed energy storage bar body (200) into the prestressed duct and install the anchoring electrical integrated terminal (300) at its end. At this time, the circuit interface module is in a standby state without external line connection. S2. Tensioning and anchoring: The prestressed energy storage bar body (200) is tensioned to the design control stress using a tensioning device, and then mechanically anchored by pressing the conical clamp (2) on top; S3. Electrical connection: After confirming that the mechanical anchor is stable, connect the plug of the external cable to the integrated electrode interface (6) to achieve safe circuit conduction; S4. Anchoring and Protection: Protectively seal the anchoring electrical integrated end (300) and pressure grout the prestressed ducts to form a complete protection system.

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