Study on Explosive Vulnerability in Zong'er Road Tunnel,Ziyang City
The study of the dynamic response characteristics and vulnerability of tunnels under internal explosion loads is of significant engineering importance as a crucial component of transportation infrastructure.This paper investigates the vulnerability of the twin-tunnel to internal explosions on Zong'er Road in Linkong Economic Zone of Ziyang City,Sichuan Province.The finite element numerical model of the twin-tunnel is established using Hypermesh pre-processing software.Subsequently,the damage index of the tunnel post-implosion is determined,and the calculated results are analyzed.Finally,the vulnerability curve of the twin-tunnel is constructed utilizing a non-parametric method.The results reveal that the tunnel primarily incurs mild damage within the range of explosive equivalent weight 0～1 000 kg.Between 1 000 and 2 000 kg,the tunnel experiences moderate damage post-implosion.In the range of 2 000～8 000 kg,the tunnel predominantly suffers severe implosion damage.The damage level of the tunnel escalates to complete destruction when the explosive yield exceeds 8 000 kg.Moreover,the probability of complete destruction of the twin-tunnel is less than 25%when the explosive load does not exceed 8 000 kg.
万方数据
维普
