预应力混凝土变截面连续箱梁桥偏载系数研究

Research on Eccentric Loaded Coefficients of Variable Cross-section Continuous Prestressed Concrete Box Girder Bridge

结合一座预应力变截面连续梁桥的运营期安全监测和多座新建桥梁的荷载试验,详细介绍了通过有限元法和静载试验确定偏载系数的方法,分析了箱梁在偏载作用下的偏载增大系数,通过几种方法的比较指出较合理的方法,为同类工程提供参考。

Combined with th safety monitoring in operation period of a variable cross-section continuous box-beam and load tests of some newly built bridges,this paper introduced calculating method of eccentric loaded coefficients by finite element method and the static load test.The eccentric loaded increment coefficients of the box girder under eccentric loaded was analyzed.At last one more reasonable methed was proposed by comparison,which can be reference to the simlar projects.