预应力混凝土变宽箱梁结构的空间分析

Three-Dimensional Analysis of Prestressed Concrete Box Girder Structure with Varying Width

预应力混凝土变宽箱梁结构具有非常明显的空间力学效应,精细的力学分析在此类结构的设计中十分重要。介绍了大型通用软件ANSYS分析预应力混凝土变宽箱梁结构的技术与方法,并且以宁波机场路高架的一联五跨预应力混凝土变宽箱梁为例,分析得到了一般经典的梁单元分析方法所不能得到的计算分析结果,为设计人员提供有价值的参考。

Prestressed concrete box girder with varying width embodies very obvious three-dimensional mechanical behavior.The fine structural analysis method which can obtain very accurate results is one of the important factors to the design of this kind of structure.In the paper,the technique and procedure of ANSYS software for the analysis of the structure is introduced in detail,and through engineering example of five-span continuous prestressed concrete box girder in Ningbo Airport Line,this proposed method can obtain state-of-the-art analytical results (which the common beam method can not have) for those designers' reference.