单箱多室箱梁横梁受力研究

为了研究单箱多室箱梁横梁受力情况,需首先求得横梁各道腹板恒载、活载分配情况。旨在研究箱梁横梁各道腹板恒载分配情况,通过结合工程实例,采用大型通用有限元软件MIDAS CIVIL2010建立了多个连续箱梁的实体模型,计算出不同跨度、不同跨数、不同截面的箱梁横梁各道腹板恒载分配力,并将其与目前常用的计算方法所得出的腹板恒载分配力进行了对比。得出了箱梁横梁各腹板恒载分配比例,为单箱多室箱梁横梁的设计计算提供参考。

Study on Crossbeam Stress of Single-box Multi-cell Box Girder

In order to study the crossbeam stress of single-box multi-cell girder,it is required to seek the distribution of dead load and live load of the different webs of crossbeam.Aiming at the study on the dead load distribution of the different webs of crossbeam,and combined with the engineering cases,the large general finite element software MIDAS CIVIL2010 is used to set up some solid models of continuous box girder to compute the different spans,the different span number and the different sections of the dead load distribution forces of the different webs of box girder crossbeam,to compare it with the dead load distribution force of web given by the present common computation methods,and to achieve the dead load distribution proportion of the different webs of the box girder crossbeam,which can be referred for the design and computation of single-box multi-cell box girder crossbeam.