摘要
本文根据既有实验及统计资料,结合实际海上风电工程,选取风电塔整体结构及浪花飞溅区段为研究对象,利用ABAQUS建立不同服役年数的结构模型,探究不同腐蚀年限所对应的不同壁厚风电塔钢筒结构的抗震性能。通过施加循环往复荷载,计算结构在循环荷载作用下的反力-位移滞回曲线、刚度退化曲线及结构弯矩-曲率关系等,得出腐蚀环境下壁厚削减对结构抗震性能的影响规律,用以评价不同服役年限情况下结构的抗震能力。本文提出以F-Δ骨架曲线作为结构M-Φ关系计算依据,可以考虑大径厚比结构在循环荷载作用下的局部屈曲现象造成的影响。
Based on existing experimental and statistical data,combined with actual offshore wind power engineering,this article selects the overall structure of wind power towers and the spray splashing section as the research object,and uses ABAQUS to establish structural models with different service years to explore the seismic performance of wind power tower steel tube structures with different wall thicknesses corresponding to different corrosion years.By applying cyclic loads,the reaction displacement hysteresis curve,stiffness degradation curve,and structural bending moment curvature relationship of the structure under cyclic loads are calculated,and the influence of wall thickness reduction on the seismic performance of the structure in corrosive environments is obtained to evaluate the seismic capacity of the structure under different service years.This article proposes to use F-ΔSkeleton curve as structure M-Φrelationship calculation basis,which can consider the impact of local buckling phenomena caused by large diameter to thickness ratio structures under cyclic loads.
作者
张学帅
ZHANG Xue-shuai(Tongji University,Shanghai 200092,China)
出处
《价值工程》
2023年第12期111-116,共6页
Value Engineering
关键词
海洋腐蚀
风电塔结构
大径厚比结构
有限元模拟
抗震性能评价
M-Φ关系计算
marine corrosion
wind power tower structure
large diameter-thickness ratio structure
finite element simulation
seismic performance evaluation
M-Φrelationship calculation
