摘要
结合某80m跨径下承式钢管混凝土系杆拱桥,分析了吊杆病害原因,从吊杆类型选择、临时替代方式、临时吊杆张拉步长等方面对吊杆更换进行了系统研究,其中运用MIDAS软件建立系杆拱桥有限元模型,计算分析了不同吊杆张拉次数对吊杆更换的影响,计算结果表明,合理的吊杆张拉次数为5~7次。
Combined with a 80m span-supported CFST tied arch bridge, the causes of the suspender diseases are analyzed. The system selection of the suspender replacement is carried out from the selection of the suspender type, the temporary replacement method and the temporary strut tension step. The MIDAS software is used to establish the finite element model of the tied arch bridge. The influence of different suspender tension times on the suspender replacement is calculated and analyzed. The calculation results show that the reasonable suspender tension times are 5 ~ 7times.
作者
张运清
吴军鹏
刘康
孟涛
ZHANG Yun-qing;WU Jun-peng;LIU Kang;MENG Tao(Shandong Provincial Transportation Planning and Design Institute,Shandong Jinan 250031 China)
关键词
钢管混凝土拱桥
吊杆病害
吊杆更换
有限元分析
CFST arch bridge
suspender disease
suspender replacement
finite element analysis
作者简介
张运清(1985-),男,河北衡水人,硕士研究生,工程师,研究方向为桥梁养护加固设计。
