Numerical Simulation Study on Blasting Demolition for Hyperbolic Cooling Tower

Three FEA models of the demolition were established for 95 meters high reinforced concrete hyperbolic cooling tower with differernt blasting incision angles to analysis collapse mechanism by LS-DYNA. The result shows that the failure pattern is well collapsed damage when the angle is normal angle (234°), the failure pattern is buckling instability when the angle(210°) is smaller than normal angle,it is easy to produce the recoil when the angle(250°) is larger than normal angle. Two case above are not conductive to control collapse.