期刊文献+

火灾对钢筋混凝土柱频率影响的理论分析与试验研究 被引量:1

Theoretical Analysis and Experimental Investigation on the Effect of Fire on the Frequency of Reinforced Concrete Columns
下载PDF
导出
摘要 为分析研究火灾对钢筋混凝土柱振动频率的影响,通过火灾后钢筋混凝土柱材料力学性能的改变,建立与振动频率的关系,推导了钢筋混凝土柱振动频率与受火时间的关系式。并设计制作了2根钢筋混凝土柱,分别在受火前后进行动力试验,测量前两阶频率,分析数据变化。结果表明,钢筋混凝土柱受火后一阶和二阶振动频率均出现明显降低,与推导的关系式相适应。 In order to analyze the influence of fire on the vibration frequency of reinforced concrete column,the relationship between the vibration frequency and the time of fire was deduced by changing the mechanical properties of the reinforced concrete column material after fire and establishing the relation with the vibration frequency.2 reinforced concrete columns were designed and made,respectively,before and after the fire,the dynamic tests were carried out,the first two-order frequencies were measured and the data changes were analyzed.The results show that the first-order and second-order vibration frequencies of reinforced concrete columns are reduced obviously,which is suitable for the deduced relationship.
作者 高立堂 刘伟 宋来运 张洪正 GAO Li-tang;LIU Wei;SONG Lai-yun;ZHANG Hong-zheng(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China)
出处 《科学技术与工程》 北大核心 2018年第30期201-205,共5页 Science Technology and Engineering
关键词 高温 弹性模量 刚度 频率 high temperature elastic modulus stiffness frequency
  • 相关文献

参考文献5

二级参考文献26

  • 1龚善初.轴向载荷、转动惯量和剪切变形对简支梁固有频率的影响[J].河南科学,2004,22(5):592-596. 被引量:7
  • 2李卫,过镇海.高温下砼的强度和变形性能试验研究[J].建筑结构学报,1993,14(1):8-16. 被引量:258
  • 3铁摩辛柯S.工程中的振动问题[M].北京:人民铁道出版社,1978..
  • 4S.铁摩辛柯 J.盖尔(胡人礼译).材料力学[M].北京: 科学出版社,1978.394-400.
  • 5钮宏,同济大学学报,1990年,18卷,3期
  • 6过镇海,1989年
  • 7过镇海,建筑结构学报,1982年,2期
  • 8苟文选.材料力学[M].西安:西北工业大学出版社,2001..
  • 9倪振华.振动力学[M].西安:西安交流大学出版社,1990..
  • 10Mohamedbhai G T G. Effect of exposure time and rates of heating and cooling on residual strength of heated concrete [J]. Magazine of Concrete Research, 1986, 38(136): 127~135

共引文献325

同被引文献14

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部