海沧大桥140m连续刚构桥施工挠度变形监测的理论与方法

The Theory and Method of Vertical Deformation Monitoring Under140Meters Continuous Rigid Structure Bridge Cantilever Construction of HaiCang Bridge

讨论大跨度连续刚构桥上部构造施工中挠度变形的成因、监测的必要性、监测的理论与方法,并结合厦门厦门海沧大桥西航道140m连续刚构桥施工挠度变形监测的实践,验证上述理论,总结监测中应采取一些有效措施。该桥较好的合拢精度表明,上述理论和方法可供同类桥型施工监控时参照。

The theory,method,necessity and cause about continuous box girder vertical de-formation of long span continuous rigid structure bridge are introduced in this paper.The the-ory and method are tested combining with the west sea-route of XiaMen HaiCang bridge and some conclusion can be drawn.The joining precision of the bridge shows that this theory and method have some reference value about vertical deformation monitoring to other same kind of bridge construction.