摘要
兼具高比强度和强绝缘性的GFRP构件在输电线路结构中的应用受到广泛关注.采用复合材料单元对GFRP节点进行精细建模,试验表明该有限元模型可有效反映其渐进损伤破坏特征.采用梁单元进行杆件建模,并合理构造杆件和圆柱壳的连接,实现了多尺度有限元建模,有效提高计算效率.主要设计工况下GFRP输电塔力学行为分析表明,GFRP结构模块位移占总位移比例高达70%,横梁失效和主管失效交替发生,节点失效从下往上依次出现.
The application of glass fiber reinforced polymer(GFRP)components with high specific strength and strong insulation in transmission line structure has attracted extensive attention.The composite material element was utilized to model the GFRP joint.The experimental results show that the progressive damage failure can be effectively reflected by using the finite element model.The beam element was used to model the members.After well constructing the connection between the member and the cylindrical shell,a multi-scale finite element modeling was achieved,which effectively improved the computational efficiency.The mechanical behaviors of the GFRP transmission tower under the main design load cases are analyzed.It is found that the displacement caused by the GFRP part accounts for up to 70%of the total displacement.Failure in beam and failure in chord occurs alternately,and joint failure subsequently appears from bottom to top.
作者
崔旭
冯炳
陈勇
谢芳
沈国辉
徐海巍
CUI Xu;FENG Bing;CHEN Yong;XIE Fang;SHEN Guo-hui;XU Hai-wei(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;Shaoxing Daming Electric Power Design Institute Co.,Ltd.,Shaoxing 312099,China;School of Civil Engineering,Shaoxing University,Shaoxing 312000,China)
出处
《空间结构》
CSCD
北大核心
2022年第4期87-96,15,共11页
Spatial Structures
基金
国家自然科学基金项目(51878607,51838012)
国网浙江省电力公司集体企业科技项目(SX-JT-KJ-2018-01)
