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为了更好地控制结构震后残余变形,增强桥梁结构自复位性能,最大限度地强化震后继续服役的能力和增加再修复的可能,该文基于性能设计的理念,给出一种新型自复位桥梁墩柱节点体系的基本概念,并选取该体系的典型模型进行截面弹性承载力、滞回特性、设计控制参数等力学性能进行初步的推导和分析。研究结果初步表明,该自复位桥梁墩柱节点结构受力明确,构造合理巧妙,由于嵌合式接头限制了体系最小势能位置,能够帮助结构复位,震后残余变形小,震后弹性承载力不下降,能够满足对结构性能的更高要求。
In order to better control the post-earthquake residual deformation, enhance the self-resetting performance of the bridge structure, and maximize the ability to continue service after the earthquake and to increase the possibility of re-repair, this paper presents a new self-resetting Bridge pier column system, and select the typical model of the system for the section of the elastic bearing capacity, hysteretic characteristics, design control parameters and other mechanical properties of a preliminary deduction and analysis. The results of the preliminary study show that the self-resetting bridge pier node structure has clear stress and reasonable structure. Since the chimeric joint limits the minimum potential energy position of the system, it can help to reset the structure. The residual deformation after the earthquake is small and the elastic carrying capacity does not decrease after the earthquake , To meet the higher structural performance requirements.