|本期目录/Table of Contents|

[1]黄宣凯,廖飞宇,王献挚,等.坑槽腐蚀对钢管混凝土侧向冲击性能的影响研究[J].建筑科学与工程学报,2025,42(04):31-42.[doi:10.19815/j.jace.2023.12006]
　HUANG Xuankai,LIAO Feiyu,WANG Xianzhi,et al.Study on effect of pitting corrosion on behavior of concrete-filled steel tube under lateral impact[J].Journal of Architecture and Civil Engineering,2025,42(04):31-42.[doi:10.19815/j.jace.2023.12006]
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坑槽腐蚀对钢管混凝土侧向冲击性能的影响研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
42卷
期数:
2025年04期
页码:
31-42
栏目:
建筑结构
出版日期:
2025-07-10

文章信息/Info

Title:
Study on effect of pitting corrosion on behavior of concrete-filled steel tube under lateral impact
文章编号:
1673-2049(2025)04-0031-12
作者:
黄宣凯1,廖飞宇1,王献挚1,陈宇峰2
(1. 福建农林大学 交通与土木工程学院,福建 福州 350108; 2. 福建建工集团有限责任公司,福建 福州 350003)
Author(s):
HUANG Xuankai1, LIAO Feiyu2, WANG Xianzhi1, CHEN Yufeng2
(1. College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, Fujian, China; 2. Fujian Construction Engineering Group Co., Ltd., Fuzhou 350003, Fujian, China)
关键词:
钢管混凝土;  坑槽腐蚀;  侧向冲击;  有限元模型;  参数分析
Keywords:
concrete-filled steel tube;  pitting corrosion;  lateral impact;  finite element model;  parametric analysis
分类号:
TU398
DOI:
10.19815/j.jace.2023.12006
文献标志码:
A
摘要:
为研究侧向冲击荷载作用下坑槽腐蚀对钢管混凝土力学性能的影响,建立了考虑坑槽腐蚀后的圆钢管混凝土构件有限元模型,并完成了4根考虑坑槽腐蚀缺陷的圆钢管混凝土柱落锤侧向冲击试验,利用试验数据验证了有限元模型的可靠性。通过有限元模型对侧向冲击荷载作用下带坑槽腐蚀的钢管混凝土柱工作机理进行了研究,并分析了坑槽深度、坑槽个数、坑槽分布、腐蚀体积损失度和冲击速度等因素对钢管混凝土柱抗侧向冲击性能的影响规律。结果表明:坑槽腐蚀不仅使钢管更容易发生局部屈曲,而且削弱了钢管和混凝土之间的相互作用,使构件的抗冲击性能降低; 随着坑槽深度、个数及腐蚀体积损失度的增大,构件的冲击持续时间会相应增加,而冲击力峰值、冲击力平台值会随之下降; 在相同腐蚀体积损失度下,坑槽个数对钢管混凝土柱抗侧向冲击性能衰退的影响比坑槽深度更为显著,而坑槽不均匀分布情况相比于均匀分布情况会对钢管混凝土抗侧向冲击性能产生更不利的影响。
Abstract:
In order to study the effect of pitting corrosion on the mechanical behavior of concrete-filled steel tube(CFST)under lateral impact loads, a finite element model of circular CFST considering pitting corrosion was established. The tests of four circular CFST specimens considering pitting corrosion defects subjected to lateral impact using a falling hammer were carried out, and the reliability of finite element model was verified using experimental data. The working mechanism of CFST columns with pitting corrosion under lateral impact loads was studied using finite element models. The influence of factors such as pit depth, number of pits, pit distribution, corrosion volume loss, and impact velocity on the lateral impact resistance of CFST columns was investigated. The results show that pitting corrosion not only makes steel pipes more prone to local buckling, but also weakens the interaction between steel pipe and concrete, resulting in a decrease in the impact resistance of components. With the increase of pit depth, number of pits, and corrosion volume loss, the impact duration of component will correspondingly increase, while the peak and plateau values of impact force will decrease accordingly. Under the same corrosion volume loss, the number of pits has a more significant impact on the lateral impact resistance of CFST columns than the pit depth. The non-uniform distribution of pits has more adverse effect on the lateral impact resistance of CFST compared to the uniform distribution.

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备注/Memo

备注/Memo:
收稿日期:2023-12-04
基金项目:国家自然科学基金项目(51878176,52378140); 福建省住房和城乡建设厅科学技术项目(2018-K-1)
通信作者:廖飞宇(1978-),男,工学博士,教授,博士生导师,E-mail:feiyu.liao@fafu.edu.cn。
Author resume: LIAO Feiyu(1978-), male, PhD, professor, E-mail: feiyu.liao@fafu.edu.cn.
更新日期/Last Update: 2025-07-10