建筑钢结构进展2025，Vol.27Issue(3)：12-21,10.DOI:10.13969/j.jzgjgjz.20231008001
预应力中空夹层钢管混凝土构件拉-压滞回性能试验研究
Experimental Study on Tensile-Compressive Hysteretic Performance of Prestressed Concrete-Filled Double-Skin Steel Tubular Members
摘要
Abstract
The power of wind turbines is gradually increasing with the rapid growth of the domestic wind energy industry,and higher demands have been put forward for the load bearing and stability performance of the lower support structure,leading to the creation of the steel-concrete hybrid structure tower(an upper pure steel tower and a lower concrete tower).However,because on-site assembly and grouting are required,the building process is inefficient and the maintenance costs are high.On the basis of this,this group suggests replacing the original steel-concrete hybrid construction tower with a new kind of prestressed concrete-filled steel tubular lattice-type wind turbine tower.Prestressed concrete-filled double-skin steel tubes are used for the four corner columns,which enhances rigidity,reduces the use of steel and concrete,and facilitates easier movement and lifting.The hollow part is used as a prestressing duct for through-length integral tensioning to increase the structural stability and axial hysteretic performance.Few studies have been published on the axial complex stressing of prestressed concrete-filled double-skin steel tubular members,while some researchers have currently conducted investigations on the axial tensile and compressive characteristics of concrete-filled steel tube.This paper conducts an experimental study on the mechanical characteristics of prestressed concrete-filled double-skin steel tubular members under axial tension,axial compression,and tensile-compressive hysteretic loading to overcome the shortcomings of the previous research and to provide a theoretical and experimental basis for the development of design standards for wind turbine towers in China.关键词
中空夹层钢管混凝土/预应力/拉-压滞回性能/风电塔架/试验研究Key words
concrete-filled double-skin steel tube/prestress/tensile-compressive hysteretic performance/wind turbine tower/experimental study分类
建筑与水利引用本文复制引用
王宇航,徐浩然,周绪红,金开元,毛捷..预应力中空夹层钢管混凝土构件拉-压滞回性能试验研究[J].建筑钢结构进展,2025,27(3):12-21,10.基金项目
国家自然科学基金(52278144),中央高校基本科研业务费专项资金(2022CDJQY-009) （52278144）
