US 11,719,308 B1
Damping segmental ring structure for subway tunnels built in grim environments of deformable ground
Dongyuan Wang, Austin, TX (US); Long Shi, Chengdu (CN); Jianguo Fan, Tianjin (CN); Jixiang Li, Chengdu (CN); and Ying Han, Chengdu (CN)
Filed by Dongyuan Wang, Austin, TX (US); Long Shi, Chengdu (CN); Jianguo Fan, Tianjin (CN); Jixiang Li, Chengdu (CN); and Ying Han, Chengdu (CN)
Filed on Dec. 5, 2020, as Appl. No. 17/112,984.
Int. Cl. F16F 15/08 (2006.01); B61B 13/10 (2006.01); F16F 3/10 (2006.01)
CPC F16F 15/085 (2013.01) [B61B 13/10 (2013.01); F16F 3/10 (2013.01); F16F 2224/025 (2013.01); F16F 2224/0208 (2013.01); F16F 2226/04 (2013.01); F16F 2228/007 (2013.01); F16F 2230/0005 (2013.01); F16F 2230/30 (2013.01); F16F 2234/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A damping segmental ring structure for subway tunnels built in deformable ground comprising:
a damper comprising:
front and rear loading plates that form a shell of the damper,
rubber pads and steel plates that form an internal core, and
a spring system configured to compress the internal core;
two transitional grooved segmental ring structures that are bolted to the front and rear loading plates; and
an internal steel tube within and concentric with the damper, the internal steel tube comprising a plurality of internal steel tube pieces, wherein a contact pressure between an inside surface of the damper and the internal steel tube is adjustable by counter-reaction bolts installed in flanges of the internal steel tube pieces.