关键词: 插销孔, 桩腿总强度折减, 折减敏感性, 桩腿局部强度

Abstract: Jacking holes of the jack-up platform leg are arranged in the entire length range of the leg, which directly affects the effective cross-sectional area of the leg and the overall bending performance of the leg. The reduction analysis method of the jacking hole for the overall strength and the buckling strength of the leg has been discussed in the current research. The sensitivity of the jacking hole to the plate thickness reduction degree or the reduction factor are discussed further according to the variation of the leg diameter, plate thickness and the size and space of the jacking hole. The analysis methods for the local strength of the jacking hole are compared in order to obtain the fast and effective calculation method of the local strength. It can provide a basis for the quick determination of the leg design scheme of the jack-up platform in the early design stage.

Key words: jacking hole, reduction of leg global strength, sensitivity reduction, leg local strength