The difference in the uplift force at each support point of a container crane between FSI analysis and a wind tunnel test

Abstract

We analyzed the difference between FSI (fluid-structure interaction) analysis and a wind tunnel test regarding the uplift force at each support point of a container crane and also design stowing devices -a tie-down rod and a stowage pin -and an alarm system to prevent overturning of a container crane under wind loads. We know that FSI analysis agrees more with wind tunnel tests than with structural analysis, but the results of FSI analysis are different from those of the tests. To evaluate the effect of the wind load on the stability of the crane, two container cranes that are widely used in container terminals-50 ton-class and 61 ton-class container cranes-are adopted for the analytic model and 19 values are considered for the wind direction as the design parameter. First, a wind tunnel test for the reduced-scale container crane model is performed according to the wind direction using an Eiffel-type atmospheric boundary-layer wind tunnel. Next, FSI analysis for a full-scale container crane is conducted using ANSYS and CFX. Then, the uplift force obtained from FSI analysis is compared with that yielded by the wind tunnel test. Finally, a formula is suggested to compensate the difference between FSI analysis and the wind tunnel test.

Finite Element Analysis and Stress Test of Quayside Container Crane

“…H.D.Zrnic [1] analyze the the dynamic behavior of the waterside boom under moving concentrated mass.C.OktayAzeloglu [ 2 ] study the behavior of container cranes under seismic loadings. Dong-SeopHan [3] provide the force coefficient according to the wind direction at each support of a container crane. Finite element analysis is widely used in simulation of container crane,but the little literature on the structural property of container crane is available.…”

Runaway characteristics of gantry cranes for container handling by wind gust

“…Han calculated the wind load acting on the crane through a numerical simulation and compared the numerical results with the results of a wind tunnel test (Han, D. and Han, G., 2011). In a study on the behavior of a crane under wind loading, Konig measured the body vibration of a portal crane, which carries heavy loads similar to those carried by cranes for container handling, which are considered herein (Konig et al, 1980).…”