基于有限元模型的箱梁腹板顺管道裂缝分析

Analysis on Cracks along the Pipeline in Web Plate of Box Girders Based on Finite Element Models

针对预应力混凝土箱梁腹板顺管道裂缝的典型工程问题,本文采用ANSYS建立有限元模型,分别从施工养护阶段与运营阶段探索开裂的主要原因。首先,研究了箍筋与腹板厚度对该类型裂缝的影响规律。其次,分别从设计和施工角度,提出了相应的防治措施。

In view of the typical engineering problem of cracks along the pipeline in web plate of box girders,ANSYS was used to establish a finite element model.The cause for these cracks was explored respectively from construction stage and operation stage.At the same time,the influence of stirrups and web thickness on this kind of cracks is deeply studied.Finally,the corresponding prevention measures are proposed respectively from the design and construction.