钢筋混凝土圆形空心高墩地震易损性分析
发布时间：2018-11-09 15:00
【摘要】：研究目的:截面形式对桥墩的力学性能有很大影响,中空截面的混凝土铁路桥梁的高墩有明显的优越性,然而目前对圆形中空高墩的抗震性能研究有侍进一步深入。本文以圆形空心高墩控制截面的材料发生损伤时所对应的截面曲率为损伤指标,采用增量动力分析方法,研究了圆形空心高墩的抗震性能。研究结论:分析结果表明:(1)圆形空心高墩在地震作用下,墩底、墩身中部、墩顶都是容易发生损伤的部位,但墩底比墩身中部和墩顶发生损伤的概率更大;(2)圆形空心高墩各个截面发生完全损伤的概率较小,说明圆形空心高墩的抗震性能优异;(3)圆形空心高墩地震易损性分析可为实际工程中高墩铁路桥梁的抗震性能研究提供理论依据。
[Abstract]:Research purpose: section form has great influence on the mechanical properties of bridge pier, and the high pier of concrete railway bridge with hollow section has obvious advantages. However, the research on seismic behavior of circular hollow high pier has been further studied. In this paper, the seismic behavior of circular hollow high pier is studied by means of incremental dynamic analysis, taking the curvature of section corresponding to the damage of the material in the control section of circular hollow high pier as the damage index. The results show that: (1) under the action of earthquake, the bottom of the pier, the middle of the pier and the top of the pier are prone to damage, but the probability of damage to the bottom of the pier is greater than that of the middle of the pier and the top of the pier; (2) the probability of complete damage in each section of circular hollow high pier is small, which indicates that the seismic performance of circular hollow high pier is excellent; (3) the seismic vulnerability analysis of circular hollow high pier can provide theoretical basis for the study of seismic behavior of railway bridge with high pier in practical engineering.
【作者单位】： 北京交通大学;
【基金】：国家自然科学基金面上项目(51178029)
【分类号】：U443.22;U442.55
[Abstract]:Research purpose: section form has great influence on the mechanical properties of bridge pier, and the high pier of concrete railway bridge with hollow section has obvious advantages. However, the research on seismic behavior of circular hollow high pier has been further studied. In this paper, the seismic behavior of circular hollow high pier is studied by means of incremental dynamic analysis, taking the curvature of section corresponding to the damage of the material in the control section of circular hollow high pier as the damage index. The results show that: (1) under the action of earthquake, the bottom of the pier, the middle of the pier and the top of the pier are prone to damage, but the probability of damage to the bottom of the pier is greater than that of the middle of the pier and the top of the pier; (2) the probability of complete damage in each section of circular hollow high pier is small, which indicates that the seismic performance of circular hollow high pier is excellent; (3) the seismic vulnerability analysis of circular hollow high pier can provide theoretical basis for the study of seismic behavior of railway bridge with high pier in practical engineering.
【作者单位】： 北京交通大学;
【基金】：国家自然科学基金面上项目(51178029)
【分类号】：U443.22;U442.55
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