Fig. 10From: Study on Roof Deterioration Characteristics of Immersed Tunnel Exposed to Fire by Multi-Phase Meso-ModelDistribution of minimum principal strain of meso-model U when exposed to fire for 5/35/65/95/105/125Â min: a 5Â min, b 35Â min, c 65Â min, d 95Â min, e 105Â min, f 125Â min.Back to article page