摘要
为了深入分析一在役桥梁的安全状态,开展在役桥梁的静载试验,分析了实际工作状态及承载能力,提供了可靠的挠度、应力等数据。该桥静力荷载参数均表明桥梁结构在静载试验过程中能够较好的保持弹性工作状态,且控制截面变形与平截面假定吻合。实测的主梁控制截面校验系数在0.7~0.8之间,表明结构竖向刚度能够满足实际荷载要求。试验结果可为该桥梁的日常维护、加固、改建等提供必要的依据。
In order to further analyze the security state of bridge in service,the static load test was carried out.The actual working state and bearing capacity of bridge were analyzed to provide the reliable def lection,stress and other data.The static load parameters indicate that the bridge structure can maintain the elastic working condition well under the static load test,and the deformation of control section is consistent with the plane section assumption.The measured verif ication coeff icient of the control section of main girder is between 0.7~0.8,which demonstrates that the vertical stiffness of structure can satisfy the requirement of the actual load.The test results can provide the necessary basis for the daily maintenance,reinforcement and reconstruction of the bridge.
作者
张茵涛
ZHANG Yintao(Datong-Xi an Passenger Dedicated Railway Corporation,Taiyuan Shanxi 030027,China)
出处
《铁道建筑》
北大核心
2018年第3期28-30,38,共4页
Railway Engineering
关键词
公路桥梁
工作性能
现场试验
小箱梁
承载能力
Highway bridge
Working performance
Field test
Small box girder
Bearing capacity
