【摘要】 采用Seed H B等提出的抗液化剪应力法,对地震荷载作用下的筒型基础土体液化情况进行计算判别。通过计算分析可得出,在地震荷载作用下,深度为0~10m土层的部分区域发生了液化,同时得出施加在筒型基础内部和下部土体的竖向静力荷载对筒内土体抗液化能力有显著的提高作用。同时以工程中采用的允许极限位移为判断标准,得出在周围土体大面积液化后筒型基础仍可继续承载。更多还原

【Abstract】 As the foundation of the offshore wind turbine generator,the bucket foundation bears a variety of dynamic loads during using,among these seismic load is the most influential and destructive one. Under seismic loads,the soil is possible to be liquefying,so the bearing capacity of the overall structure was severely affected by the soil liquefaction. The criterion of liquefaction used in this paper was the anti-liquefaction shearing strength method which was put forward by Seed and had been made some changes when used. It can be obtained that,some areas of soil of the depth from 0m to10m were liquefied under the seismic loads; at the same time the vertical static load on the bucket foundation had a significant effect to increase the anti-liquefaction ability of the soil under the bucket. By the allowed limit displacement criteria using in project,it obtained that the bucket foundation can still work after the soil liquefaction.更多还原