Seismic performance evaluation and numerical analysis of CFDST long columns with local corrosion under eccentric compression

被引:0
作者
Zhang, Yuteng [1 ]
Zhang, Jigang [1 ]
Liu, Feifei [1 ]
Xu, Hongjian [2 ]
Gu, Chi [2 ]
Qiu, Huanliang [2 ]
Wu, Ruixue [2 ]
Qin, Lei [3 ]
机构
[1] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266520, Shandong, Peoples R China
[2] Qingdao First Municipal Engn Co Ltd, Qingdao 266000, Shandong, Peoples R China
[3] Qingdao Human Def Command & Serv Ctr, Dept Geriatr, Qingdao 266000, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
Concrete -filled double -skin steel tube (CFDST); Local corrosion; Quasi -static test; Finite element analysis (FEA); Seismic performance; Eccentric compression; SKIN SHS OUTER; RELIABILITY ASSESSMENT; PITTING CORROSION; ACTIVE CORROSION; STEEL; BEHAVIOR; PIPELINES; STRENGTH; MEMBERS; STRESS;
D O I
10.1016/j.oceaneng.2024.118006
中图分类号
U6 [水路运输]; P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
In this study, the seismic performance of locally corroded CST and CFDST long columns was evaluated by quasistatic tests. The effects of four levels of corrosion and two types of cross-sections on damage patterns, horizontal load-displacement curves, and seismic indexes were assessed. ABAQUS software was used to conduct extended simulations on long columns of CFDST, analyzing the impact of each parameter on seismic performance. Experimental results indicated that the horizontal load-displacement hysteresis curves of the CFDST long columns within the specified corrosion parameters exhibit robust characteristics, demonstrating improved seismic performance and energy dissipation capacity while preventing sudden damage due to local buckling. The parametric analysis showed that increasing the diameter-to-thickness ratio of the outer steel pipe and decreasing the hollow ratio significantly impact the peak load, whereas increasing the axial compression ratio and eccentricity results in non-uniform specimen damage and reduced peak load.
引用
收藏
页数:17
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