新型建筑材料2024,Vol.51Issue(5) :83-86,94.

增幅冲击下钢筋混凝土剪力墙的动态响应分析

Analysis of the dynamic response of reinforced concrete shear walls under increasing impact

黎可然 刘宇航 邓嘉瑞 赵泔霖
新型建筑材料2024,Vol.51Issue(5) :83-86,94.

增幅冲击下钢筋混凝土剪力墙的动态响应分析

Analysis of the dynamic response of reinforced concrete shear walls under increasing impact

黎可然 1刘宇航 1邓嘉瑞 2赵泔霖1
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作者信息

  • 1. 昆明理工大学建筑工程学院,云南昆明 650500
  • 2. 中国水利水电第十四工程局有限公司,云南昆明 650041
  • 折叠

摘要

在冲击荷载下,钢筋混凝土剪力墙的动态响应是一个复杂的非线性过程,采用LS-DYNA对钢筋混凝土剪力墙进行了 3次连续冲击荷载下的数值模拟试验,验证了 CSCM本构模型的可靠性,分析3次冲击破坏模式得到位移时程曲线.研究结果表明,在增幅冲击荷载作用下,混凝土的损伤范围逐次增大,放射状裂缝逐次增多,冲击响应复杂程度加剧;随着冲击能量的增加,剪力墙吸收能量的效率逐渐降低.墙体中心峰值位移随着冲击头速度的增加而增大,中心位移从12.83 mm增至49.08 mm;峰值位移周期随着墙体损伤程度的加剧而增长.

Abstract

The dynamic response of reinforced concrete shear walls under impact loads is a complex nonlinear process.LS-DYNA was used to conduct three consecutive numerical simulation tests on the reinforced concrete shear wall under impact loads,verifying the reliability of the CSCM constitutive model,analyzing the failure modes of the three impacts,and extracting its dis-placement time history curve.The research results indicate that under the action of increasing impact load,the damage range of con-crete gradually increases,and radial cracks also gradually increase,making the impact response more complex;As the impact energy increases,the efficiency of shear walls in absorbing energy gradually decreases.The peak displacement of the wall center increases with the increase of the impact head velocity,the center displacement increased sharply from 12.83 mm to 49.08 mm.The period of peak displacement increases with the increase of the degree of wall damage.

关键词

增幅冲击/动态响应/剪力墙/破坏模式

Key words

increasing impact/dynamic response/shear walls/failure mode

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基金项目

昆明理工大学分析测试基金项目(2022M20212210013)

出版年

2024
新型建筑材料
中国新型建筑材料工业杭州设计研究院

新型建筑材料

CSTPCD
影响因子:0.569
ISSN:1001-702X
参考文献量3
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