温度応力

[V-67] Examination of crack-inducing effect by discrete crack analysis for inducing joint of tunnel lining concrete

〇Kunikazu Azuma¹, Takahiro Saito¹, Midori Meguro¹, Chihhsuan Chang², mitsuyasu Iwanami³ (1.Okumura Corporation Technical Research Institute, 2.Okumura Corporation East Japan Branch, 3.Tokyo Institute of Technology)

Keywords:tunnel lining concrete, long span center, crack inducing joint, thermal stress analysis, crack

Long span center is applied to the mountains tunnel for rapid construction. Lining concrete may be cracked in the direction perpendicular to tunnel due to construction. The experiment that changed the depth of the inducing joint was done in the full size construction examination of lining concrete. Cracks were simulated with a distributed spring model, and the state of cracks was examined by comparing the depth of the induced joint with the size of the cracks generated in the lining.