西安石油大学学报（自然科学版）2011，Vol.26Issue(5)：84-88,5.
斜拉跨越结构的风载影响分析
摘要
Abstract
The dynamic and static mechanical performances of the stay-cables structure across Mulong River under the effect of wind load were analyzed using the finite element method. The static analysis results indicate that the maximum deformation and the maximum stress vary a little with wind-force when the wind-force is smaller than grade 3, but they increase significantly with wind-force when the wind force is larger than the grade 3. Under dynamic wind load,the front 10 order modes and frequencies of the structure are obtained by modal analysis. Under the effect of 8 grade dynamic wind force,the time history responses of the displacement and pulling stress of two important nodes located in the middle of the bridge and at its end are researched,and the stress and displacement distributions of the whole bridge in a moment are also analyzed. Finally, the relationships between the maximum deformation and the maximum stress and the dynamic wind-force are obtained,they are similar to those under static wind load,but when the wind-force is larger than grade 3, the maximum deformation and the maximum stress are almost two times than those under the static wind load.关键词
斜拉跨越结构/静态风载/动态风载/最大位移/最大应力Key words
stay-cables across structure/static wind load/dynamic wind load/maximum deformation/maximum stress分类
能源科技引用本文复制引用
李瑞勇,李新康,署恒木,仝兴华,阎庆华..斜拉跨越结构的风载影响分析[J].西安石油大学学报（自然科学版）,2011,26(5):84-88,5.基金项目
中石化西气东输管道工程技术十条龙项目 （）
