简支T梁桥拓宽连接后新建基础沉降的作用分析

Analysis on new foundation subsidence after the simple supported T-beam bridge widening and connection

以某中小跨径简支T梁桥拓宽工程为背景,采用ANSYS 10.0建立空间实体有限元模型,结合现场实测沉降值数据,分析了新建基础沉降对上部结构受力的影响,并据此探讨了新旧桥连接时机的选取,对类似桥梁有重要的指导意义。

Taking the simply supported small-span T-beam widening engineering as the background, applying ANSYS 10. O, the paper establi- shes spatial finite element model, analyzes the impact of new foundation subsidence upon upper structure stress by combining with in-situ survey subsidence data, and explores the chance selection of old-new bridge connection, which has significant guiding meaning for similar bridge.