A Parametric Study on Wind-Induced Vulnerability Assessment of Dockside Container Cranes

Abstract eng:
Container cranes are one of the essential component in a seaport facility system and highly susceptible to failure during natural disasters such as earthquakes and severe windstorms [viz., McCarthy and Vazifdar (2004); McCarthy et al.]. In this work, a crane having tower height of 72.60 m and boom length of 131.00 m is modeled in a commercial software program considering both material (kinematic hardening) and geometric nonlinearity (P-Δ effect). Stationary, Gaussian stochastic fluctuating wind fields are simulated by means of spectral representation method considering Kaimal and Simiu power spectra in conjunction with along and across wind coherence functions. Nonlinear time history analyses are then performed and the failure of the crane is assessed. Finally, the influence of various parameters like boom position, yaw angle, gradient height and gradient wind speed on the failure of the crane is summarized. It is observes that for both of the boom positions median value of failure gradient wind speed considerable vary with the gradient height and yaw angle.

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