防灾减灾工程学报2025，Vol.45Issue(5)：1074-1087,14.DOI:10.13409/j.cnki.jdpme.20241202002
雷达罩在强风作用下失效过程及易损性分析
Failure Process and Vulnerability Analysis of Radomes under Strong Winds
摘要
Abstract
Radomes are widely used in military and civilian facilities,yet they often suffer severe dam-age under wind loads.Therefore,the analysis of structural failure modes and vulnerability of radomes is of great significance.Firstly,large eddy simulation was used to simulate the wind load distribution characteristics on the surface of the radome structures.The wind load distribution characteristics were obtained for three types of radomes with different base heights,and high-precision fitting was per-formed using functions.The results showed that the wind load magnitudes were much higher than the shape coefficients of wind load on the top of rotating shells specified in the codes,and increasing the base height mainly affected the shape coefficient on the leeward side of the radome.Additionally,the improved Hashin criterion and Tserpes'stiffness degradation criterion were used to analyze the entire failure process of the radomes.Based on this,an analytical framework for the wind-induced vulnerabil-ity of radomes was proposed,in which the number of failed elements was used as the damage indicator and quantitative values for three failure states were provided.A Kriging surrogate model was con-structed to predict the failure probability of the radome structures,providing a basis for evaluating their wind-resistance limit performance and estimating damage degrees.The results showed that struc-tural instability of the radomes could be triggered by failure of only a few elements.At low wind speeds,the probability of failure increased with the base height,whereas at high wind speeds,increas-ing the base height beyond 12 m had no significant effect on the failure probability of the radomes.关键词
雷达罩/风荷载特性/渐进失效/易损性Key words
radome/wind load characteristics/progressive failure/vulnerability分类
建筑与水利引用本文复制引用
侯彦岑,徐枫,胡钢,段忠东,欧进萍..雷达罩在强风作用下失效过程及易损性分析[J].防灾减灾工程学报,2025,45(5):1074-1087,14.基金项目
十四五重点研发计划重点专项(2021YFC3100702)、广东省土木工程智能韧性结构重点实验室建设项目(2023B1212010004)资助 （2021YFC3100702）
