Parameter optimization of vibration control system for adjacent building structures based on negative stiffness inerter damper

• Published in: Scientific reports Vol. 14; no. 1; p. 8742
• Main Authors: Kang, Xiaofang, Tang, Jianjun, Wei, Jiachen, Jiang, Xueqin, Sheng, Ziyi, Shi, Xianzeng
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 16.04.2024; Nature Publishing Group; Nature Portfolio
• Subjects: 639/166/986; 639/4077/4072; Adjacent building; Collisions; Control systems; Earthquakes; Energy harvesting; Geological hazards; H 2 norm theory; Humanities and Social Sciences; Monte Carlo simulation; multidisciplinary; Negative stiffness inerter damper; Risk reduction; Science; Science (multidisciplinary); Seismic activity; Seismic hazard; Seismic performance; Structures; Vibration; Vibration control; norm theory; Vibration control; Negative stiffness inerter damper; Energy harvesting; Seismic performance; Adjacent building; H 2 norm theory
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-024-59380-1

Building structures are subjected to strong earthquakes, which result in lateral collisions between them. Such collisions often cause severe structural damage and exacerbate the seismic hazard risk of building structures during earthquake events. This paper discusses the application of vibration control devices based on negative stiffness inerter damper in single-story adjacent building structures. The dynamic equations of the vibration control system containing different types of negative stiffness inerter damper under seismic excitation are established as a unified model. The H2 norm theory and Monte Carlo pattern search method are used to optimize the design parameters to improve the vibration control performance of the system, and the dynamic characteristics of the system are investigated. The results demonstrate that attaching negative stiffness inerter damper to adjacent building structures can effectively improve the overall seismic capacity reserve of the building and reduce the risk of collision of adjacent building structures; improve the robustness and stability of the system, and better reduce the displacement response of the building structure under seismic excitation. In addition, the potential of NSID-based vibration control devices to convert seismic energy into usable electricity has been investigated.