Seismic mitigation performance of shape memory alloy flexible circumferential joint in shield tunnel

• Published in: Earthquake engineering & structural dynamics Vol. 52; no. 14; pp. 4305 - 4324
• Main Authors: Ma, Yongtao, Miao, Yu, Long, Xiaohong
• Format: Journal Article
• Language: English
• Published: Bognor Regis Wiley Subscription Services, Inc 01.11.2023
• Subjects: Bolted joints; Circumferences; Deformation; Deformation effects; Design; Earthquake damage; Earthquakes; Energy dissipation; Energy exchange; Internal forces; Mitigation; Performance evaluation; Seismic activity; Seismic response; Shape; Shape memory alloys; Structural safety; Tunneling shields; Tunnels

The circumferential joint of a shield tunnel is prone to damage under strong earthquakes, affecting the safety of the tunnel. This paper adopts an innovative shape memory alloy (SMA) flexible circumferential joint for longitudinal seismic mitigation of the tunnel. The SMA joint is composed of SMA ri...