力学与实践 ›› 2014, Vol. 36 ›› Issue (1): 69-75.DOI: 10.6052/1000-0879-13-318

• 应用研究 • 上一篇    下一篇

竹质框架模型受侧向冲击测试及分析

郭金龙1, 陈庆军1,2,3, 郑锦洪1, 刘达鑫1   

  1. 1 华南理工大学土木与交通学院, 广州510641;
    2 亚热带建筑科学国家重点实验室, 广州510641;
    3 澳大利亚新南威尔斯大学土木与环境学院CIES 研究中心, 悉尼NSW2052
  • 收稿日期:2013-07-29 修回日期:2013-10-20 出版日期:2014-02-08 发布日期:2013-12-25
  • 通讯作者: 郭金龙,1988年生,男,博士研究生,主要从事结构动力分析研究.E-mail:jlguo1030@gmail.com
  • 基金资助:

    华南理工大学亚热带建筑科学国家重点实验室自主研究课题项目(2013ZC19);国家留学基金资助项目.

EXPERIMENT AND ANALYSIS OF A BAMBOO FRAME MODEL UNDER LATERAL IMPACT LOAD

GUO Jinlong1, CHEN Qingjun1,2,3, ZHENG Jinhong1, LIU Daxin1   

  1. 1 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;
    2 State Key Laboratory of Subtropical Building Science, Guangzhou 510641, China;
    3 Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, the University of New South Wales, Sydney, NSW 2052, Australia
  • Received:2013-07-29 Revised:2013-10-20 Online:2014-02-08 Published:2013-12-25

摘要:

针对第六届全国大学生结构设计竞赛命题要求设计一个四层缩尺竹质吊脚楼框架,测试其在侧向冲击载荷作用下的加速度响应. 采用有限元软件LS-DYNA,对模型进行模拟分析. 结果表明,有限元计算与加载测试所得的加速度时程曲线吻合较好. 以该模型为基础进行参数分析,结果表明随拉带初始松弛量增大、撞击板质量减小,结构加速度响应增大;相较入射球质量,入射球速度对结构峰值加速度的影响更敏感,随入射球速度增大,结构峰值加速度增大.

关键词:

竹质框架|侧向冲击|峰值加速度

Abstract:

According to the requirement proposed by the Sixth National Structure Design Contest for college students (NSDCCS), a four-storey bamboo frame model raised floor house is built and experimented under a lateral impact load. The acceleration response is measured.and the FEA software LS-DYNA is used to carry out the finite element analysis to investigate the dynamic mechanism of the frame. The numerical simulation results are in a good agreement with the experimental acceleration time history curves. Furthermore, a parametric analysis is conducted to study the peak of the acceleration. The results indicate that the models with a higher initial relaxation offset of the tension rods or with a lighter contact plate will increase the acceleration of the frame. With regards to the mass of the impact ball, the velocity affects the peak of the acceleration more sensitively, and the peak acceleration increases with the increase of the ball velocity.

Key words:

bamboo frame|lateral impact|peak acceleration

中图分类号: