某空腹式悬链线圬工拱桥承载能力研究评价

Research and Evaluation on the Bearing Capacity of an Open-web Catenary Masonry Arch Bridge

某空腹式悬链线圬工拱桥修建年代较远,设计资料缺失。文章通过现场实测结构尺寸参数、石料强度等数据,结合相近年代桥梁设计荷载参数、现在桥梁的通行荷载量,在与管养单位沟通的基础上,通过现场桥梁外观检查、荷载试验,进行桥梁承载能力检算,确定相适应的桥梁荷载等级。研究成果可为类似年代久远、资料缺失桥梁的管养维护和承载能力评定等提供一定参考。

An open-web catenary masonry arch bridge has been built for a long time,and the design data are missing.In this paper,through the fi eld measurement of structural size parameters,stone strength and other data,combined with the design load parameters of bridges in similar years and the current traffi c load of bridges,on the basis of communication with the management and maintenance units,through the on-site bridge appearance inspection and load test,the bridge bearing capacity is checked and calculated to determine the appropriate bridge load level.The research results can provide some reference for the maintenance and bearing capacity evaluation of similar bridges with long history and missing data.