1、国内图书分类号:U442.5+5密级:公开国际图书分类号:624西南交通大学研究生学位论文酸雨环境下钢管混凝土桥墩抗震性能研究年级2015级姓名邓歆玥申请学位级别工学硕士专业桥梁与隧道工程指导教师周凌远教授二〇一八年五月ClassifiedIndex:U442.5+5U.D.C:624SouthwestJiaotongUniversityMasterDegreeThesisStudy on Seismic Behaviors of Concrete-filled Steel Bridge Pier under Acid Rain Attack
2、 Grade: 2015Candidate: Deng XinyueAcademic Degree Applied for: Master of EngineeringSpeciality:Bridge and tunnel engineeringSupervisor: Prof. ZhouLingyuanMay,2018西南交通大学硕士研究生学位论文第I页摘要钢管混凝土桥墩作为一种新型桥墩结构形式,充分结合了钢与混凝土各自的材料优势,具有承载力高、延性好、施工简便等特点,使其在工程中得到了越来越广泛的应用。而随着全球工业化进程的不断
5、E2地震波各三条,对不同腐蚀率下的桥墩进行了动力时程分析。通过分析得到桥墩抗震性能的演化规律:随着腐蚀率的增大,墩顶最大位移增大,墩底最大弯矩均值逐渐减小而最大曲率均值逐渐增大。在E1地震作用下,弯矩-曲率曲线基本呈线性分布,而在E2地震作用下有明显的能量耗散,并随着腐蚀率的变化非线性能量耗散越来越明显。关键词:钢管混凝土桥墩;酸雨;抗震性能;性能退化;时程分析西南交通大学硕士研究生学位论文第II页AbstractAs a new type of bridge pier structure, the concrete-filled steel
6、 bridge piers give full play to the respective material properties of steel and concrete.Due to the characteristics of high bearing capacity, good ductility and easy construction, etc, theconcrete-filled steel bridge piers has been more and more widely used in engineering.
7、With the continuous advancement and development of the global industrialization, acid rain has become one of the worst environmental corrosion on earth.The concrete-filled steel piers in the acid rain environment will inevitably be corroded by acid rain, which will lead to
8、the low stiffness and seismic performance degradation. Therefore, it is of great s