摘要
文中以金岛大桥为工程背景,采用Midas Civil建立数值模型,通过对拱肋拱顶处横桥向位移、拱肋关键截面变形、拱座处应力等分析筛选出最佳张拉指导方案.通过对比索力动测仪和有限元分析结果,确保了弦振动理论在索力测试中的精准性.结果表明:采取从拱顶向拱脚两边对称张拉,再单独按顺序张张拉一侧吊杆的吊杆张拉方案为最优方案;通过有限元分析验证了索力动测仪所测各吊杆基频,实验显示索力动测仪读数,油压读数拟合均能得到较好的实测索力值,且与成桥索力误差较小.
Taking Jindao Bridge as the engineering background,a numerical model was established by Midas Civil,and the best tensioning guidance scheme was selected by analyzing the transverse displacement of arch rib vault,the deformation of key section of arch rib and the stress at arch support.By comparing the results of cable force dynamic tester and finite element analysis,the accuracy of string vibration theory in cable force test was ensured.The results show that it is the best scheme to tension the suspender symmetrically from the vault to both sides of the arch foot,and then tension the suspender on one side separately in sequence.The fundamental frequency of each suspender measured by cable dynamic tester is verified by finite element analysis.The experiment shows that the measured cable force can be obtained by fitting the cable force dynamic meter reading and oil pressure reading,and the error with the completed cable force is small.
作者
邱红胜
乔羽声
乐早发
殷昊
李长青
QIU Hongsheng;QIAO Yusheng;LE Zaofa;YIN Hao;LI Changqing(School of Traffic and Transportation Engineering,Wuhan University of Technology,Wuhan 430063,China;Zhuhai Aviation City Engineering Construction Co.Ltd.,Guangdong Province,Zhuhai 519090,China;China Municipal Engineering Zhongnan Design and Research Institute Co.Ltd.,Wuhan 430010,China;China Wuhuan Engineering Co.Ltd.,Wuhan 430223,China)
出处
《武汉理工大学学报(交通科学与工程版)》
2025年第6期1361-1367,共7页
Journal of Wuhan University of Technology(Transportation Science & Engineering)
关键词
异型拱肋
吊杆张拉
施工控制
方案优化
alien-shaped rib
cable tension
construction control
scheme optimization
