频率法及千斤顶法在钢桁架悬索桥病害检测中的应用  

Application of Frequency Method and Jack Method in the Inspection of Steel Truss Suspension Bridge

作　　者：鄢光显 Yan Guangxian(Guizhou Qiancheng Hongjing Engineering Consulting Co.Ltd.,Guiyang,Guizhou 550001)

机构地区：[1]贵州黔程弘景工程咨询有限责任公司,贵州贵阳550001

出　　处：《江西建材》2024年第2期82-84,共3页Jiangxi Building Materials

摘　　要：文中以某钢桁架悬索桥工程为例,对其病害情况进行详细分析,对比主缆、钢桁架加劲梁变形及重要构件锈蚀状况的检测数据,提出维护建议。通过数据比对,文中采用千斤顶法、频率法测量与修正吊杆索力水平,借助空间节点平衡理论获取不同主缆段索力值。结果表明,主缆与吊杆索力、主缆与主桁架的空间变形关系密切。Taking a steel truss suspensionbridge project as anexample,this paper analyzes itsdiseases indetail,compares the detectiondata of deformationof main cable,steel truss stiffeningbeamand corrosionof important components,and puts forwardsome maintenance suggestions.Through the data comparison,this paper uses the jackmethod and the frequency method tomeasure and modify the hanger rodcable force level,and obtains the cable force values of different main cable segments by means of the space node balance theory.The results showthat the spatial deformationof the main cable and hanger rodiscloselyrelatedtothe main cable and the main truss..

关 键 词：公路桥梁 钢桁架悬索桥 吊杆索力 频率法 检测分析 

分 类 号：U447[建筑科学—桥梁与隧道工程]