大跨径混凝土桥梁的长期挠度实测分析  

Long-term deflection measurement and analysis of long-span concrete beam bridge

作　　者：崔海军[1] CUI Haijun(Yangzhou Industry Polytechnic College,Yangzhou 225127,China)

机构地区：[1]扬州工业职业技术学院,江苏扬州225127

出　　处：《混凝土》2020年第7期127-129,共3页Concrete

基　　金：扬州市重点研发计划(社会发展)项目:多点地震激励桥梁基础减隔震支座性能研究阶段性研究成果(YZ2016068,扬州市科技局)。

摘　　要：大跨度混凝土桥梁施工方便兼具结构刚度好造价低的特点,在桥梁工程建设中得到广泛的应用,但是大跨径混凝土梁桥在实际运营过程中,梁体本身会随着时间的推移发生下挠的问题,严重影响桥梁的使用安全。通过采用倾角仪对大跨度桥梁的挠度进行监测,可以计算出各个监测点对应断面的挠度值,并进行工程实例分析及采用灰色理论进行验证,表明所采用的倾角仪对桥梁挠度监测具有很好的实际意义。Long-span concrete bridge construction is convenient and has the characteristics of good structural stiffness and low cost.It has been widely used in bridge construction.However,in the actual operation of long-span concrete beam bridge,the deflection of the beam itself will occur over time,which seriously affects the safety of the bridge and the use of the bridge.The inclinometer is used to monitor the deflection of long-span bridges.The deflection values of the corresponding sections of each monitoring point can be calculated through numerical experiments,and the engineering example is analyzed.The gray theory is used to verify the method.It shows that the inclinometer has a good practical significance for the deflection monitoring of bridges.

关 键 词：大跨度桥梁 挠度 倾角仪 灰色理论 

分 类 号：TU528.01[建筑科学—建筑技术科学]