Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of Applicability of Seismic Base Isolation for Bridges According to Vietnamese Codes
https://orcid.org/http://orcid.org/0000-0001-8580-6940
https://orcid.org/http://orcid.org/0000-0002-0298-5080
https://orcid.org/http://orcid.org/0000-0001-9827-5923
Seismic base isolation (SBI) has been increasingly used to enhance the seismic performance of important structures. However, this technique was primarily developed for constructions located in high seismic areas and it is still rarely adopted as common isolation systems in moderate seismic areas. This paper attempts to investigate the seismic performance of SBI and its applicability for bridges located in moderate seismic regions such as Vietnam. The bilinear model is used for addressing the seismic behaviour of isolators. Seismically isolated-bridge analyses are conducted essentially based on the nonlinear time history analysis method (NLTHA). A parametric study is conducted on equivalent simplified models, subjected to ground motions according to the Vietnamese code (TCVN 9386–2012), to investigate the seismic responses of isolated-bridges and the SBIs efficiencies. The applicability of SBI for bridges in such regions is drawn on the evaluation of appropriate seismic responses in force, displacement, and residual displacement. The obtained results indicate that SBIs with moderate characteristic strength (Qd) and high post-elastic stiffness (Kd) show the best performance for bridges in such seismic regions.
Evaluation of Applicability of Seismic Base Isolation for Bridges According to Vietnamese Codes
https://orcid.org/http://orcid.org/0000-0001-8580-6940
https://orcid.org/http://orcid.org/0000-0002-0298-5080
https://orcid.org/http://orcid.org/0000-0001-9827-5923
Seismic base isolation (SBI) has been increasingly used to enhance the seismic performance of important structures. However, this technique was primarily developed for constructions located in high seismic areas and it is still rarely adopted as common isolation systems in moderate seismic areas. This paper attempts to investigate the seismic performance of SBI and its applicability for bridges located in moderate seismic regions such as Vietnam. The bilinear model is used for addressing the seismic behaviour of isolators. Seismically isolated-bridge analyses are conducted essentially based on the nonlinear time history analysis method (NLTHA). A parametric study is conducted on equivalent simplified models, subjected to ground motions according to the Vietnamese code (TCVN 9386–2012), to investigate the seismic responses of isolated-bridges and the SBIs efficiencies. The applicability of SBI for bridges in such regions is drawn on the evaluation of appropriate seismic responses in force, displacement, and residual displacement. The obtained results indicate that SBIs with moderate characteristic strength (Qd) and high post-elastic stiffness (Kd) show the best performance for bridges in such seismic regions.
Evaluation of Applicability of Seismic Base Isolation for Bridges According to Vietnamese Codes
https://orcid.org/http://orcid.org/0000-0001-8580-6940
https://orcid.org/http://orcid.org/0000-0002-0298-5080
https://orcid.org/http://orcid.org/0000-0001-9827-5923
Seismic base isolation (SBI) has been increasingly used to enhance the seismic performance of important structures. However, this technique was primarily developed for constructions located in high seismic areas and it is still rarely adopted as common isolation systems in moderate seismic areas. This paper attempts to investigate the seismic performance of SBI and its applicability for bridges located in moderate seismic regions such as Vietnam. The bilinear model is used for addressing the seismic behaviour of isolators. Seismically isolated-bridge analyses are conducted essentially based on the nonlinear time history analysis method (NLTHA). A parametric study is conducted on equivalent simplified models, subjected to ground motions according to the Vietnamese code (TCVN 9386–2012), to investigate the seismic responses of isolated-bridges and the SBIs efficiencies. The applicability of SBI for bridges in such regions is drawn on the evaluation of appropriate seismic responses in force, displacement, and residual displacement. The obtained results indicate that SBIs with moderate characteristic strength (Qd) and high post-elastic stiffness (Kd) show the best performance for bridges in such seismic regions.
Evaluation of Applicability of Seismic Base Isolation for Bridges According to Vietnamese Codes
Lecture Notes in Civil Engineering
Ha-Minh, Cuong (Herausgeber:in) / Tang, Anh Minh (Herausgeber:in) / Bui, Tinh Quoc (Herausgeber:in) / Vu, Xuan Hong (Herausgeber:in) / Huynh, Dat Vu Khoa (Herausgeber:in) / Nguyen, Xuan Dai (Autor:in) / Nguyen, Van Tu (Autor:in) / Nguyen, Hoang (Autor:in)
CIGOS 2021, Emerging Technologies and Applications for Green Infrastructure ; Kapitel: 21 ; 217-225
28.10.2021
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Seismic isolation , Hysteresis behaviour , Seismically isolated-bridge design , Moderate seismic regions Engineering , Geoengineering, Foundations, Hydraulics , Sustainable Architecture/Green Buildings , Sustainable Development , Structural Materials , Cyber-physical systems, IoT , Professional Computing
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