摘要
多箱室大倾斜腹板箱梁桥在工程实践上应用不多,可借鉴资料少。以某座大倾斜度腹板高架匝道桥4×20 m连续梁为背景,进行结构设计,采用ANSYS软件对大倾斜度箱梁建立实体及实体-板单元混合模型进行对比分析,并对箱梁各腹板的受力状态进行分析和总结。结果表明,外倾边腹板和中腹板分担竖向剪力比较接近,箱梁顶板应按拉弯构件设计,宜加强横向构造措施。
There were few studies on the application of large inclined web box girder,the design of a large inclined web box girder bridge was introduced for structural layout,design principle and design method based on an existing engineering project. The solid element model and solid plate element hybrid model of the large inclined web box girder were built by ANSYS software,the results of these two types of models were compared and analyzed respectively,and the stress state of each web of box girder was analyzed and summarized. This study provides a reference for similar bridge design. The results show that the difference of vertical shearing force carried by lateral web and inside web is small,the roof plate of box girder should be designed as the member of tension-bending component,and the constructional measures are suggested for strengthening the integration of girder.
出处
《交通科技》
2017年第5期12-14,共3页
Transportation Science & Technology
关键词
箱梁桥
斜腹板
有限元
桥梁设计
box girder bridge
inclination angle web
finite element method
bridge design
