带刚度退化的一种自复位混凝土桥墩简化分析模型

刘晖; 何铭华; 辛克贵; 郭佳; 刘文

doi:10.16511/j.cnki.qhdxxb.2016.24.001

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清华大学学报（自然科学版） ›› 2016, Vol. 56 ›› Issue (4) : 341-347. DOI: 10.16511/j.cnki.qhdxxb.2016.24.001

土木工程

带刚度退化的一种自复位混凝土桥墩简化分析模型

刘晖¹, 何铭华¹, 辛克贵¹, 郭佳², 刘文¹

作者信息 +

Simplified theoretical model for self-centering concrete bridge piers with stiffness deterioration

LIU Hui¹, HE Minghua¹, XIN Kegui¹, GUO Jia², LIU Wen¹

Author information +

文章历史 +

摘要

自复位混凝土桥墩(SCCP)能够在抵御强震后有效控制残余变形,是一种具备优良抗震性能的新型桥墩体系。该文针对新型自复位混凝土桥墩,提出一种自复位混凝土桥墩损伤演化过程的简化分析模型,系统地描述了循环加载过程中滞回曲线的各个主要环节。在损伤演化分析中,通过引入3个损伤因子γ_u、γ_c和γ_r,阐明循环增大的侧向位移可能导致的3种损伤来源。通过与既有的试验数据的对比分析,验证了该文提出的简化分析模型的准确性和有效性。

Abstract

Self-centering concrete bridge piers (SCCP), which have been used to retrofit bridge piers to give better seismic response, effectively reduce residual displacements during severe earthquakes. This study gives a simplified theoretical model for self-centering concrete bridge piers including a stiffness deterioration analysis and lateral force-displacement analysis. The stiffness deterioration analysis introduces 3 damage factors for γ_u, γ_c and γ_r. These damage factors illustrate the damage caused by increasing lateral displacements. The theoretical model has been validated against existing experimental data with good agreement.

导出引用

刘晖, 何铭华, 辛克贵, 郭佳, 刘文. 带刚度退化的一种自复位混凝土桥墩简化分析模型[J]. 清华大学学报（自然科学版）. 2016, 56(4): 341-347 https://doi.org/10.16511/j.cnki.qhdxxb.2016.24.001

LIU Hui, HE Minghua, XIN Kegui, GUO Jia, LIU Wen. Simplified theoretical model for self-centering concrete bridge piers with stiffness deterioration[J]. Journal of Tsinghua University(Science and Technology). 2016, 56(4): 341-347 https://doi.org/10.16511/j.cnki.qhdxxb.2016.24.001

中图分类号： TU375.3

参考文献

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2012-12-12	2016-04-15
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