[1]潘爽,郭金龙,郭晓.CCFDST长柱侧向冲击响应及刚塑性分析[J].福建工程学院学报,2023,21(03):218-224.[doi:10.3969/j.issn.1672-4348.2023.03.003]
 PAN Shuang,GUO Jinlong,GUO Xiao.Lateral impact response and rigid plastic analysis of CCFDST long column[J].Journal of FuJian University of Technology,2023,21(03):218-224.[doi:10.3969/j.issn.1672-4348.2023.03.003]
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CCFDST长柱侧向冲击响应及刚塑性分析()
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《福建工程学院学报》[ISSN:1672-4348/CN:35-1267/Z]

卷:
第21卷
期数:
2023年03期
页码:
218-224
栏目:
出版日期:
2023-06-25

文章信息/Info

Title:
Lateral impact response and rigid plastic analysis of CCFDST long column
作者:
潘爽郭金龙郭晓
福建农林大学
Author(s):
PAN Shuang GUO Jinlong GUO Xiao
College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University
关键词:
CCFDST长柱冲击响应刚塑性分析冲击抗弯承载力跨中最大挠度
Keywords:
CCFDST column impact response rigid plastic analysis impact-bending capacity maximum mid-span deflection
分类号:
TU398
DOI:
10.3969/j.issn.1672-4348.2023.03.003
文献标志码:
A
摘要:
采用有限元软件对圆中空夹层钢管混凝土(CCFDST)长柱构件进行侧向冲击数值模拟,揭示了CCFDST 长柱构件冲击响应全过程工作机理,探究了空心率、长细比、冲击能量等参数对构件动力响应的影响。结果表明:CCFDST 长柱构件的冲击力发展过程大致分为接触、震荡和下降3 个阶段。动力冲击抗弯承载力提高系数随空心率、长细比的增大而降低,随冲击能量的增大而提高。基于刚塑性理论对构件冲击过程进行简化处理,提出了CCFDST 长柱构件冲击抗弯承载力提高系数和跨中最大挠度计算公式。
Abstract:
The circular concrete-filled double steel tube (CCFDST) long columns under lateral impact were simulated by using the finite element software. The mechanism of CCFDST members in the whole process was revealed, and the effects of parameters such as hollow ratio, slenderness ratio, and impact energy were explored . Results show that the development of the impact force can be divided into three stages: contacting, shocking and falling. The dynamic increase factor of impact-bending capacity decreases with the increase of hollow ratio and slenderness ratio but increases with the increase of impact energy. Based on the rigid plastic theory, the simplified analysis of the impact process of CCFDST members is conducted, and the formulas for impact-bending capacity and maximum mid-span deflection of circular CCFDST long column members are proposed.

参考文献/References:

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更新日期/Last Update: 2023-06-25