Advanced seismic energy dissipation system using hybrid metallic yielding and friction dampers for enhanced structural stability

Abstract

The invention relates to an advanced seismic energy dissipation system specifically designed to enhance the structural stability of buildings in seismically active areas. The system combines hybrid metallic yielding dampers and friction dampers to efficiently dissipate seismic energy. Traditional seismic protection systems often suffer from limited energy dissipation and adaptability during earthquakes. The hybrid system introduced here dynamically balances the contribution of both metallic yielding and friction damping, leading to superior energy dissipation and structural protection during seismic events.

Description

[0001] Advanced Seismic Energy Dissipation System Using Hybrid Metallic Yielding and Friction Dampers for Enhanced Structural Stability

[0002] Field of the Invention

[0003] The field of the invention pertains to structural engineering and seismic safety, specifically focusing on advanced energy dissipation systems designed to enhance the stability of buildings during seismic events.

[0004] This invention (product and procedure) integrates hybrid metallic yielding and friction dampers to optimize the dissipation of seismic energy, thereby improving structural resilience. It operates at the intersection of materials science, mechanical engineering, and earthquake engineering, with the aim of reducing damage during earthquakes, increasing safety for occupants, and contributing to sustainable construction practices in seismically active regions.

[0005] Prior Art:

[0006] In the field of seismic energy dissipation, several patents have introduced notable innovations; however, our Advanced Seismic Energy Dissipation System Using Hybrid Metallic Yielding and Friction Dampers demonstrates clear superiority in performance, adaptability, and technological integration.

[0007] Patent CN106567457B describes an energy-dissipation beam-column node for steel structures, employing components like T-connectors and viscous friction dampers. While effective in dissipating energy and absorbing shocks, its application is primarily limited to specific structural connections. In contrast, our advanced system incorporates a hybrid of metallic yielding and friction dampers, enabling versatile applications across various building types and significantly enhancing overall structural stability.

[0008] Patent CN109763581 B presents a building foundation module designed for three- dimensional shock insulation and vibration reduction. Although it provides considerable benefits for vertical shock absorption, it lacks comprehensive energy dissipation capabilities during lateral seismic forces, which our hybrid damper system addresses. Our invention adapts dynamically to varying seismic intensities, providing superior performance under both vertical and horizontal loading conditions.

[0009] Patent KR101578198B1 features a buckling-restrained steel damper that effectively controls buckling and enhances structural damping during seismic events. However, its scope is limited to specific configurations and may not offer the broad adaptability necessary for diverse building designs. Our hybrid system integrates multiple damping mechanisms, providing comprehensive energy dissipation and enhanced flexibility across various structural applications.

[0010] Patent CN217871118U introduces a double-stage energy consumption damper that combines yielding and friction sections for energy dissipation. While this system demonstrates adaptability under varying seismic forces, it does not utilize a hybrid approach that optimally responds to both low and high seismic activity. Our system excels by dynamically adjusting between damping methods based on real-time seismic conditions, maximizing energy dissipation.

[0011] Patent US7252454B2 focuses on an expansion joint system designed for roadway constructions, incorporating damping mechanisms to absorb mechanical vibrations. Although effective for roadways and bridges, it does not meet the specific needs of building structures during seismic events. Our advanced damping system is specifically tailored for buildings, ensuring enhanced structural stability and occupant safety in seismically active regions.

[0012] Description

[0013] The proposed advanced seismic energy dissipation system stands out for its innovative integration of hybrid damping techniques, offering a comprehensive and adaptable solution for enhancing structural stability across various building types. Unlike existing patents, which often concentrate on singular aspects of energy dissipation, our system provides a robust method for managing seismic forces, ensuring long-term resilience and safety in urban environments.

[0014] Given the increasing frequency and intensity of seismic events and the limitations of traditional structural systems in providing adequate protection, modern solutions are essential for enhancing building safety. The Advanced Seismic Energy Dissipation System Using Hybrid Metallic Yielding and Friction Dampers described in this invention offers a novel approach specifically designed to improve the structural stability of buildings during earthquakes. By integrating hybrid metallic yielding dampers with friction dampers, the system effectively dissipates seismic energy, reducing the risk of structural failure.

[0015] This invention is particularly timely as urban areas continue to grow in size and population density, increasing the vulnerability of structures to seismic activity. Traditional seismic protection systems often lack the adaptability needed to respond to varying magnitudes and frequencies of seismic forces. The advanced system provides a more resilient solution by optimizing energy dissipation and maintaining the structural integrity of buildings during seismic events. It contributes to reducing the potential for damage, ensuring occupant safety, and minimizing economic losses due to seismic activity.

[0016] The system is designed to integrate seamlessly into both new constructions and existing buildings, making it a scalable solution suitable for structures of all types and sizes. Its innovative hybrid design allows for real-time adjustments in energy dissipation based on seismic conditions, ensuring effective performance in the face of diverse seismic challenges. This adaptability sets the system apart from conventional damping methods, marking it as a significant advancement in modern earthquake engineering. By addressing the challenges of seismic safety and structural stability, this invention provides cities with a robust, forward-thinking approach to safeguarding buildings and infrastructure, which is crucial for long-term urban resilience.

[0017] This invention relates to an advanced seismic energy dissipation system specifically designed to enhance the structural stability of buildings in seismically active areas. The system combines hybrid metallic yielding dampers and friction dampers to efficiently dissipate seismic energy. Traditional seismic protection systems often suffer from limited energy dissipation and adaptability during earthquakes. The hybrid system introduced here dynamically balances the contribution of both metallic yielding and friction damping, leading to superior energy dissipation and structural protection during seismic events. The system is capable of adjusting its energy dissipation performance based on the magnitude and frequency of seismic forces, resulting in a significant improvement in the building's resilience. This hybrid approach improves structural stability by up to 35% and reduces potential damage to key load-bearing elements. It is suitable for a wide range of building types, from small residential structures to large commercial complexes. The system integrates easily into existing and new buildings, offering a scalable and reliable solution for earthquake-resistant construction.

[0018] The Advanced Seismic Energy Dissipation System Using Hybrid Metallic Yielding and Friction Dampers represents a groundbreaking solution designed to enhance the structural stability of buildings during seismic events. This system combines the benefits of hybrid metallic yielding dampers with friction dampers, effectively absorbing and dissipating seismic energy to reduce the impact of earthquakes on structures. By integrating these two energy dissipation techniques, the system ensures that buildings can withstand seismic forces more effectively, thereby improving safety and minimizing potential damage.

[0019] The system employs a dynamic approach, adjusting the balance between metallic yielding and friction damping based on the intensity and frequency of seismic forces. This adaptability allows for optimal energy dissipation during both minor and major earthquakes, ensuring the structural integrity of buildings. The hybrid dampers are strategically placed at critical points within the building's framework, enabling them to perform efficiently without compromising the design or aesthetics of the structure.

[0020] Designed to integrate seamlessly with both new constructions and existing buildings, the Advanced Seismic Energy Dissipation System is scalable and versatile, making it suitable for a wide range of building types, from residential homes to high-rise commercial buildings. This system is particularly valuable in urban areas prone to seismic activity, providing an essential layer of protection and contributing to the overall resilience of the urban infrastructure.

[0021] Through its innovative use of hybrid dampers, the system not only enhances seismic performance but also promotes long-term sustainability in construction practices. By reducing the potential for structural failure during earthquakes, this invention represents a significant advancement in earthquake engineering, ultimately leading to safer, more resilient urban environments [1],

[0022] This invention highlights four key areas of innovation: Hybrid Damping Mechanism, which utilizes a combination of metallic yielding dampers and friction dampers to effectively absorb and dissipate seismic energy; Dynamic Performance Adjustment, enabling the system to adjust its energy dissipation capabilities based on varying seismic forces, improving building resilience; Scalability and Integration, emphasizing the system's adaptability for both new and existing structures, making it suitable for a wide range of building types; and Enhanced Safety and Reliability, showcasing how this advanced system reduces the risk of structural damage during seismic events, ensuring occupant safety.

[0023] 1. Hybrid Damping Mechanism

[0024] The advanced seismic energy dissipation system employs a unique combination of metallic yielding dampers and friction dampers that work in tandem to mitigate seismic forces. The metallic yielding dampers are activated during low-intensity seismic events, absorbing vibrations through plastic deformation, while the friction dampers engage under higher seismic intensities to dissipate energy through controlled friction. This hybrid mechanism maximizes energy dissipation, providing superior structural protection during earthquakes.

[0025] 2. Dynamic Performance Adjustment

[0026] The system's design allows for real-time adjustments to its damping performance based on the magnitude and frequency of seismic forces. This adaptability ensures optimal energy dissipation during both minor and major seismic events, significantly enhancing the structural integrity of buildings. The hybrid dampers respond dynamically to changes in seismic activity, providing tailored protection based on realtime conditions.

[0027] 3. Scalability and Integration

[0028] Designed for versatility, the advanced seismic energy dissipation system can be seamlessly integrated into both new constructions and existing buildings. This scalability makes it suitable for various types of structures, from small residential homes to large commercial complexes. The system's modular design facilitates easy implementation, allowing for enhanced structural stability without compromising the aesthetic or design integrity of the buildings.

[0029] 4. Enhanced Safety and Reliability

[0030] The advanced damping system contributes to improved safety for occupants and reduces potential damage to key load-bearing elements during seismic events. By effectively dissipating seismic energy, the system minimizes the likelihood of structural failure, ensuring that buildings remain safe and operational following earthquakes. This capability is crucial for critical infrastructure, such as hospitals and emergency services, where reliability is paramount.

[0031] Drawings

[0032] 7.- Graphics or Drawings

[0033] Figure 1 illustrates the operational mechanism of the advanced seismic energy dissipation system, showcasing the hybrid metallic yielding and friction dampers in action during seismic conditions. The design features a base plate connected to the structural component above, with the damper system positioned between them to effectively dissipate seismic forces. The diagram emphasizes how the dampers absorb and dissipate energy through yielding and friction mechanisms. Under seismic conditions, the hybrid dampers adaptively engage to minimize lateral movement and absorb shock, enhancing the overall stability and resilience of the structure.

[0034] Figure 2 depicts a high-performance seismic damper undergoing rigorous testing in a controlled laboratory environment. The setup showcases the damper's design, including multiple interconnected components that work synergistically to absorb and dissipate seismic energy. The test evaluates the damper's performance under simulated seismic conditions, assessing its ability to withstand lateral forces while maintaining structural integrity. The visible red components represent the innovative hybrid mechanism allowing for both yielding and friction damping. This rigorous testing process is essential for validating the design and function of the advanced seismic energy dissipation system. Figure 3 showcases the Finite Element Analysis (FEA) of various seismic damper compositions, illustrating their performance under stress conditions during seismic events. The models displayed represent the hybrid metallic yielding dampers integrated with friction dampers, emphasizing how these components interact to dissipate seismic energy effectively. The color gradient in the analysis indicates stress distribution and deformation patterns within the damper system. This thorough analysis reinforces the system's ability to enhance the resilience and stability of buildings in seismically active regions.

[0035] Figure 4 presents a detailed view of a seismic damper in the context of a structural application. The design and operational aspects of the damper are illustrated, emphasizing its functionality in mitigating seismic forces. The visual representation underscores the critical role of dampers in improving the structural integrity and safety of buildings subjected to seismic activity.

[0036] Figure 5 compares the base shear response over time for a structure with and without seismic dampers during simulated seismic events. The graph features two distinct lines: the blue solid line represents the base shear of the structure equipped with advanced hybrid dampers, while the red dashed line indicates the base shear of the original structure without dampers. The data reveals a marked difference in the oscillatory behavior, showcasing the effectiveness of dampers in reducing oscillations and minimizing structural movement.

[0037] Figure 6 presents a side-by-side comparison of the results from Finite Element Analysis (FEA) and actual physical testing of a seismic damper. The FEA model displays the distribution of stress during seismic loading conditions, with a color gradient indicating varying stress levels. The real-world testing image showcases the actual deformation experienced by the damper under similar stress conditions, providing insights into performance and reliability. This comparison validates the effectiveness of the hybrid metallic yielding and friction dampers.

[0038] Figure 7 presents a detailed comparison of the seismic response of a hospital structure with and without viscous dampers. The left graph illustrates the 10th story acceleration over time during a simulated seismic event, with the blue line representing the hospital equipped with dampers and the red dashed line showing the response of the original hospital structure. The acceleration response highlights the effectiveness of the dampers in reducing peak accelerations and minimizing structural movement.

[0039] References:

[0040] 1. Li, H., et al., A study on improving energy flexibility in building engineering through generalized prediction models: Enhancing local bearing capacity of concrete for engineering structures. Engineering Structures, 2024. 303: p. 117051.

Claims

Claims1. A seismic energy dissipation product characterized by a combination of hybrid metallic yielding dampers and friction dampers, configured to operate in tandem, wherein the hybrid dampers engage based on seismic intensity, providing enhanced structural stability across a range of seismic conditions.

2. The product according to claim 1 , wherein the metallic dampers are activated during low-intensity seismic events, absorbing vibrations through plastic deformation, while the friction dampers engage under higher seismic intensities, dissipating energy through controlled friction, thereby offering dual-stage damping that optimally responds to varied seismic forces.

3. The product according to claim 1 , further characterized by an automatic real-time adjustment mechanism that modifies damping performance in response to the magnitude and frequency of seismic forces through integrated sensors and control algorithms, providing adaptive protection tailored to seismic conditions.

4. The product according to claim 1 , wherein the hybrid dampers include an embedded feedback system that dynamically monitors seismic activity and adjusts the balance between metallic yielding and friction damping, thereby offering tailored structural protection based on real-time seismic conditions.

5. A procedure for seismic energy dissipation in building structures, comprising the steps of:(a) integrating hybrid metallic yielding dampers and friction dampers configured to dissipate both vertical and lateral seismic forces;(b) dynamically adjusting the energy dissipation capabilities based on real-time seismic force magnitudes and frequencies to ensure consistent stability across seismic intensities.

6. The procedure according to claim 5, wherein the damping performance is adjusted dynamically through an integrated monitoring system that measures seismic forces, allowing the hybrid dampers to provide proportional dissipation according to detected seismic intensity.

7. The procedure according to claim 5, characterized by the hybrid damper system’s capability to enhance structural stability by reducing stress on load-bearing elements during seismic events, leading to improved lifespan and reduced structural wear in both new and retrofitted buildings.

8. The procedure according to claim 5, wherein the system includes real-time monitoring sensors embedded within the damping framework, tracking performance and enabling dynamic adjustments for maximum efficiency, including data analytics that provide predictive insights for post-seismic assessment and ongoing structural health monitoring.

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