摘要
采用陈塘大桥混合车道作为研究对象,是由4片分体式组合箱梁组成的4×25m连续箱梁桥,利用大型有限元软件Midas/civil,用梁格法建立单元模型,分别按1/50、1/25、1/12.5、1/10、1/5梁长为单元划分梁格,与空间模型和实际桥梁检测数据对比分析了5种梁格划分在两种荷载工况下跨中应变与位移的比较,为桥梁检测提供了理论依据.结论表明:当梁格法以1/25～1/12.5梁长的长度划分单元,与实际情况最符合,数据最精确,模型建立最方便,在实际检测中,应该以此标准作为建模参考依据.
The article takes the Chentang Bridge mixed lane as the object of study. It is a 4×25m continu- ous box-girder bridge made up of 4 split composite box-girder. With large finite element software Midas/ civil, the element model is established by grillage method,and 1/50,1/25,1/12.5,1/10,1/5 beam length is used to divide grillage respectively. With the comparison of the space model and the actual bridge test data, the comparison of five kinds of grillage division across strain and deflection is analyzed in two load condi- tions,which provides a theoretical basis for bridge inspection.
出处
《湖南工程学院学报（自然科学版）》
2012年第4期85-87,94,共4页
Journal of Hunan Institute of Engineering(Natural Science Edition)
关键词
梁格法
连续箱梁
梁格划分
grillage method
continuous box-girder
grillage division
