อิทธิพลของความเร็วลมต่อความมีเสถียรภาพของปั้นจั่นยกตู้สินค้าท่าเรือชายฝั่ง

This research aimed to study the effect of wind speed on the stability of a ship-to-shore gantry crane of 40 t analyzed using the finite element method (FEM). The main structure of the crane was made of SM 490 grade hot rolled steel. Analyses considered the crane's in-service state, the case when the crane was momentary out-off-service with wind load range of 16-35 m/s total of 7 working positions. With a constant axial force of 811,287 N (811.28 kN) and the crane in out-off-service state with a wind load of 48 m/s the results of the finite element of both states showed that the maximum stress that occurred in the boom pull set (Forestay) was 239.05 MPa. This is less than the yield strength of the material and in the linear elastic range it is safe from failure due to over yield strength. The maximum reaction force of the crane leg was 2,918.90 kN occurring in the left leg of the crane. Reaction force in the out-off-service state did not cause structure lifting. The maximum displacement was 157.02 mm occurring at the boom end with the maximum value being within the allowable values and the design conditions of the crane. [ABSTRACT FROM AUTHOR]