Seismic isolation technology for prestressed segmental precast piers

• Main Authors: Liu, Y. (Author), Wenliuhan, H. (Author), Yang, Z. (Author), Yuan, L. (Author), Zhang, C. (Author), Zou, S. (Author)
• Format: Article
• Language: English
• Published: Elsevier Ltd 2022
• Subjects: Earthquakes; Energy dissipation; Full-scale in-situ loading test; Functional separations; In-situ loading; Load testing; Optimal design; Optimal systems; Piers; Pre-cast; Pre-stressed; Prestressed segmental precast pier; Seismic design; Seismic isolation device; Seismic isolation devices; Seismic performance; Seismic Performance; Seismic waves; Situ loading tests
• Online Access: View Fulltext in Publisher
• ISBN: 02677261 (ISSN)
• DOI: 10.1016/j.soildyn.2022.107362

Prestressed segmental precast (PC) piers, with insufficient energy dissipation capacity, are seldomly adopted on bridges in seismic areas. To improve the seismic performance of PC piers, this study proposes a functional separation seismic isolation device (FSID), serving as a supplementary replaceable energy dissipation device. Full-scale field load tests on a real-world PC pier were carried out to qualify the seismic performance of this type of piers. Based on the results of tests and supplementary numerical analysis, an optimal design of the FSID was achieved. The numerical results show that the FSID has multi-stage statuses and reaction models. By optimizing the design parameters, FSID can enable the PC piers to satisfy the required seismic performance under various levels of earthquakes. Therefore, the performance-based seismic design of PC piers can be achieved using the FSID. © 2022 Elsevier Ltd