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A platform for research: civil engineering, architecture and urbanism
Seismic Control of Structures with Mass Irregularities Through Optimally Placed Active Tendons Using Multi-objective Genetic Algorithm
https://orcid.org/http://orcid.org/0000-0001-8289-069X
https://orcid.org/http://orcid.org/0000-0001-5761-3340
The present work investigates active response control of building structures with mass irregularity in critical storeys under seismic load. For this purpose, the linear quadratic regulator controller algorithm is used to produce the control force and the same is provided to the structure through an active tendon system. Multi-objective optimization is done through genetic algorithm to obtain the optimal number of tendons and their placement. Responses such as base shear, storey drift, and floor displacement have been investigated. The two objectives, viz., the number of storeys with tendons and the base shear are minimized whereas the maximum storey drift and the maximum floor displacement are constrained within their permissible limits. For numerical purposes, El Centro earthquake has been considered to act on the frame of deficient shear building of 10 storeys. Mass irregularity is introduced in it using six modification factors 1.5, 2, 2.5, 3, 3.5, and 4 in each of the first, second, and third storeys. The control system has been successfully optimized to reduce the three responses and the mass irregularity in second and third storeys of the deficient frame in the cases where the modification factor is more than 2 cost an extra tendon for the same reduction of the response as that of a regular frame.
Seismic Control of Structures with Mass Irregularities Through Optimally Placed Active Tendons Using Multi-objective Genetic Algorithm
https://orcid.org/http://orcid.org/0000-0001-8289-069X
https://orcid.org/http://orcid.org/0000-0001-5761-3340
The present work investigates active response control of building structures with mass irregularity in critical storeys under seismic load. For this purpose, the linear quadratic regulator controller algorithm is used to produce the control force and the same is provided to the structure through an active tendon system. Multi-objective optimization is done through genetic algorithm to obtain the optimal number of tendons and their placement. Responses such as base shear, storey drift, and floor displacement have been investigated. The two objectives, viz., the number of storeys with tendons and the base shear are minimized whereas the maximum storey drift and the maximum floor displacement are constrained within their permissible limits. For numerical purposes, El Centro earthquake has been considered to act on the frame of deficient shear building of 10 storeys. Mass irregularity is introduced in it using six modification factors 1.5, 2, 2.5, 3, 3.5, and 4 in each of the first, second, and third storeys. The control system has been successfully optimized to reduce the three responses and the mass irregularity in second and third storeys of the deficient frame in the cases where the modification factor is more than 2 cost an extra tendon for the same reduction of the response as that of a regular frame.
Seismic Control of Structures with Mass Irregularities Through Optimally Placed Active Tendons Using Multi-objective Genetic Algorithm
https://orcid.org/http://orcid.org/0000-0001-8289-069X
https://orcid.org/http://orcid.org/0000-0001-5761-3340
The present work investigates active response control of building structures with mass irregularity in critical storeys under seismic load. For this purpose, the linear quadratic regulator controller algorithm is used to produce the control force and the same is provided to the structure through an active tendon system. Multi-objective optimization is done through genetic algorithm to obtain the optimal number of tendons and their placement. Responses such as base shear, storey drift, and floor displacement have been investigated. The two objectives, viz., the number of storeys with tendons and the base shear are minimized whereas the maximum storey drift and the maximum floor displacement are constrained within their permissible limits. For numerical purposes, El Centro earthquake has been considered to act on the frame of deficient shear building of 10 storeys. Mass irregularity is introduced in it using six modification factors 1.5, 2, 2.5, 3, 3.5, and 4 in each of the first, second, and third storeys. The control system has been successfully optimized to reduce the three responses and the mass irregularity in second and third storeys of the deficient frame in the cases where the modification factor is more than 2 cost an extra tendon for the same reduction of the response as that of a regular frame.
Seismic Control of Structures with Mass Irregularities Through Optimally Placed Active Tendons Using Multi-objective Genetic Algorithm
Lecture Notes in Civil Engineering
Kolathayar, Sreevalsa (editor) / Chian, Siau Chen (editor) / Rather, F. (author) / Alam, M. (author)
2021-09-21
14 pages
Article/Chapter (Book)
Electronic Resource
English
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