A UHPC prefabricated component protection device

Abstract

The utility model discloses a kind of UHPC prefabricated component protection devices, it is related to the field of protection engineering and intelligent construction technology, including outer shell and inner layer shell, cavity is reserved between outer shell and inner layer shell, the side of inner layer shell towards cavity is provided with metal energy dissipater, metal energy dissipater is connected with inner layer shell by connecting assembly, strain sensor is attached on metal energy dissipater.The utility model in, first, efficient energy dissipation and easy recovery, impact energy is absorbed by replaceable metal energy dissipater, after damage, it can be replaced energy dissipater, maintenance cost is low.Second impact perception and intelligent, strain sensor records data, it can be inversely calculated impact force related information, power online monitoring and intelligent management.Three realize multifunctional integration, integrated bearing, energy dissipation, sensing function, promote protection from passive to active controllable upgrade.Four economy and good durability, borrow UHPC high durability to protect main body long life, replaceable energy dissipater reduces whole life cycle cost.

Description

Technical Field

[0001] This utility model relates to the field of protective engineering and intelligent construction technology, and in particular to a protective device for UHPC precast components. Background Technology

[0002] Due to its extremely high strength and toughness, UHPC is ideally suited for manufacturing guardrails, blast walls, and bridge pier impact protection components. However, existing UHPC protective components are mostly solid or simply reinforced structures, which have the following limitations: 1. Passive energy consumption: It relies solely on the deformation and damage of the material itself to absorb energy. Once it cracks, repair is difficult and costly.

[0003] 2. Limited functionality: It only provides protection and cannot detect the intensity and history of impact, lacking the foundation for intelligent management.

[0004] 3. Poor recoverability: If damaged after an impact, it often needs to be replaced entirely, which is not economical.

[0005] Currently, although there is research on embedding sensors in concrete, they are mostly used to monitor stress and strain, and have not been organically combined with replaceable energy-consuming mechanisms to form an intelligent protection system that is "sensing, energy-consuming, and easy to maintain". Therefore, a UHPC precast component protection device is provided. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a protective device for UHPC precast components. Firstly, it offers efficient energy dissipation and easy recovery; impact energy is absorbed by a replaceable metal energy absorber, and the UHPC body largely retains its elasticity. Damage to the energy absorber is simply addressed by replacing it, resulting in low maintenance costs. Secondly, it features impact sensing and intelligent operation; strain sensors record data, allowing for the calculation of impact force-related information, facilitating online monitoring and intelligent management. Thirdly, it achieves multi-functional integration, combining load-bearing, energy dissipation, and sensing functions, upgrading protection from passive to active and controllable. Fourthly, it boasts good economy and durability; the high durability of UHPC ensures a long lifespan for the main body, and the replaceable energy absorber reduces the total lifespan cost, overcoming the deficiencies of existing technologies.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A protective device for UHPC precast components includes an outer shell and an inner shell, with a cavity reserved between the outer shell and the inner shell. A metal energy dissipator is provided on the side of the inner shell facing the cavity. The metal energy dissipator is connected to the inner shell through a connecting component. A strain sensor is attached to the metal energy dissipator. A data transmission interface is embedded in the inner shell. The strain sensor is electrically connected to the data transmission interface through an internal wire.

[0008] As a further improvement of this utility model, the metal energy dissipator is an "X"-shaped yield steel sheet.

[0009] As a further improvement of this invention, the strain sensor is attached to the wing plate of the metal energy dissipator.

[0010] As a further embodiment of this utility model: the connecting component includes a bolt sleeve pre-embedded in the inner shell, a high-strength bolt inserted into the bolt sleeve, and the high-strength bolt is screwed to the metal energy consumer.

[0011] As a further improvement of this utility model, a sealing plate is installed on the inner shell at the mounting port of the data transmission interface by screws.

[0012] As a further embodiment of this utility model: a connecting seat is provided between the two ends of the outer shell and the inner shell, and the outer shell, the connecting seat and the inner shell are integrally formed.

[0013] As a further improvement of this utility model, a distributed optical fiber sensor is pre-embedded inside the outer casing.

[0014] The beneficial effects of this utility model are as follows: 1. High efficiency and recoverability: Impact energy is mainly absorbed by the internal replaceable metal energy dissipator through plastic deformation. The UHPC body mainly provides strength and stiffness, and is usually kept in the elastic stage, avoiding irreversible serious damage. After damage, only the internal energy dissipator needs to be replaced, and the main structure can continue to be used, resulting in low maintenance costs.

[0015] 2. Impact Sensing and Intelligence: The built-in strain sensor can record the strain response of the metal energy dissipator in real time. Through algorithms, the magnitude, frequency, and even direction of the impact force can be calculated, realizing online monitoring and intelligent management of the component status and providing data support for preventive maintenance.

[0016] 3. Multifunctional integration: It integrates the three major functions of load-bearing, energy consumption, and sensing into a single prefabricated component, realizing the upgrade from "passive protection" to "active sensing and controllable protection", representing the development direction of protective facilities.

[0017] 4. Economy and Durability: The high durability of UHPC is fully utilized, ensuring a long lifespan for the main structure. Meanwhile, the replaceable metal energy dissipator design reduces the total lifespan cost. Attached Figure Description

[0018] Figure 1 This is a first-view three-dimensional structural diagram of a UHPC prefabricated component protection device proposed in this utility model.

[0019] Figure 2This is a second-view three-dimensional structural diagram of a UHPC prefabricated component protection device proposed in this utility model.

[0020] Figure 3 This utility model proposes a protective device for UHPC precast components. Figure 1 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Outer shell; 2. Cavity; 3. Metal energy dissipator; 4. High-strength bolt; 5. Bolt sleeve; 6. Strain sensor; 7. Internal wire; 8. Data transmission interface; 9. Sealing plate; 10. Inner shell; 11. Connector; 12. Distributed fiber optic sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1, referring to Figure 1-3 A protective device for UHPC precast components includes an outer shell 1 and an inner shell 10. A cavity 2 is reserved between the outer shell 1 and the inner shell 10. A metal energy dissipator 3 is provided on the side of the inner shell 10 facing the cavity 2. The metal energy dissipator 3 is connected to the inner shell 10 through a connecting component. A strain sensor 6 is attached to the metal energy dissipator 3. A data transmission interface 8 is embedded in the inner shell 10. The strain sensor 6 is electrically connected to the data transmission interface 8 through an internal wire 7.

[0024] The metal energy dissipator 3 is an "X"-shaped yield steel sheet, and the strain sensor 6 is attached to the wing plate of the metal energy dissipator 3.

[0025] The connecting assembly includes a bolt sleeve 5 pre-embedded in the inner shell 10, a high-strength bolt 4 inserted into the bolt sleeve 5, and the high-strength bolt 4 is screwed to the metal energy dissipator 3.

[0026] A sealing plate 9 is installed on the inner shell 10 at the mounting port of the data transmission interface 8 by screws, which protects the bottom of the data transmission interface 8.

[0027] A connecting seat 11 is provided between the two ends of the outer shell 1 and the inner shell 10, and the outer shell 1, the connecting seat 11 and the inner shell 10 are integrally formed.

[0028] The outer shell 1, connecting seat 11, and inner shell 10 are cast from UHPC. When the entire component is impacted, the impact force is transmitted to the metal energy dissipator 3 through the outer shell 1, connecting seat 11, and inner shell 10, causing it to undergo plastic yielding, and a large amount of energy is consumed in the process. At the same time, strain sensor 6 records strain data and transmits it to an external acquisition system through built-in wire 7. The external acquisition system analyzes the received strain data using algorithms to calculate the magnitude, number of impacts, and direction. Managers can monitor the details of the impact event in real time, achieving intelligent monitoring and understanding the occurrence and intensity of the impact event. Afterwards, simply unscrewing the high-strength bolt 4, removing the deformed metal energy dissipator 3, and replacing it with a new metal energy dissipator 3 will restore the protective component to full functionality.

[0029] Example 2 is an optimization based on Example 1, specifically: The outer casing 1 has a pre-embedded distributed fiber optic sensor 12 for monitoring the overall strain field distribution of the component. The distributed fiber optic sensor 12 is electrically connected to the external acquisition system and forms a data complement with the strain sensor 6 on the metal energy dissipator 3, providing a more comprehensive feedback on the stress state of the device and providing more accurate data support for subsequent structural optimization and maintenance.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A protective device for UHPC precast components, comprising an outer shell (1) and an inner shell (10), characterized in that, A cavity (2) is reserved between the outer shell (1) and the inner shell (10). A metal energy dissipator (3) is provided on the side of the inner shell (10) facing the cavity (2). The metal energy dissipator (3) is connected to the inner shell (10) through a connecting component. A strain sensor (6) is attached to the metal energy dissipator (3). A data transmission interface (8) is embedded in the inner shell (10). The strain sensor (6) is electrically connected to the data transmission interface (8) through an internal wire (7).

2. The UHPC precast component protection device according to claim 1, characterized in that, The metal energy dissipator (3) is an "X"-shaped yield steel sheet.

3. A protective device for UHPC precast components according to claim 2, characterized in that, The strain sensor (6) is attached to the wing plate of the metal energy dissipator (3).

4. The UHPC precast component protection device according to claim 1, characterized in that, The connection assembly includes a bolt sleeve (5) pre-embedded in the inner shell (10), a high-strength bolt (4) inserted into the bolt sleeve (5), and the high-strength bolt (4) is screwed to the metal energy consumer (3).

5. A protective device for UHPC precast components according to claim 1, characterized in that, A sealing plate (9) is installed on the inner shell (10) at the mounting port of the data transmission interface (8) by screws.

6. A protective device for UHPC precast components according to claim 1, characterized in that, A connecting seat (11) is provided between the two ends of the outer shell (1) and the inner shell (10), and the outer shell (1), the connecting seat (11) and the inner shell (10) are integrally formed.

7. A protective device for UHPC precast components according to claim 1, characterized in that, A distributed optical fiber sensor (12) is pre-embedded inside the outer casing (1).

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