摘要
简支小箱梁桥面连续结构桥梁在拓宽改造中,基础不均匀沉降差对结构受力产生不可忽视的影响.基于浙江甬台温高速公路乐清高架桥梁拓宽工程,在对六跨一联预应力混凝土小箱梁桥面连续结构进行现场沉降监测的基础上,建立了有限元实体模型,利用监测数据得到的沉降曲线,对预应力混凝土小箱梁桥面连续结构拼接后因基础不均匀沉降引起的结构应力进行了分析,总结了沉降影响下桥面板连续端接缝的受力状态及特点.
Differential settlement of foundation has a bad influence on the structure during the widening of small box girder bridge continuous bridge.Taking broadening bridges of Ningbo-Taizhou-Wenzhou highway as the research object,the finite element entity model is established based on the monitoring of differential settlement of the prestressed concrete small box girder bridge with six spans.Using the settlement curve obtained from the monitoring data,the structure stresses caused by differential settlement of the foundation are analyzed after the prestressed concrete small box girder bridge joining together.Then the stress state and characteristics of beam bridge panel seams are summarized under the influence of the settlement.
出处
《武汉理工大学学报（交通科学与工程版）》
2017年第6期1009-1012,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
浙江省交通运输厅科研计划项目资助(2014H27)
关键词
桥梁工程
混凝土
沉降
小箱梁
有限元
bridge engineering
concrete
settlement
small box girder
finite element
