Scholarlink

<p>The seismic design forces of nonstructural components (NSCs) in buildings are closely related to floor acceleration response amplification. To investigate the differences in acceleration responses of structures with different structural types, fundamental periods, and seismic design levels, 56 reinforced concrete and steel structures with fundamental periods ranging from 0.37 s to 5.68 s were selected. For each structure, 100 sets of earthquake motions were used as inputs for elastic time history analysis. Based on the resulting 26,500 sets of floor acceleration response data, the amplification rules of peak floor acceleration/peak ground acceleration (<i>PFA/PGA</i>) along the height of various structures and the corresponding floor response spectrum characteristics were studied. The nonlinear changes of <i>PFA/PGA</i> along the height of long period structures were compared with the codes of different countries. Moreover, more suitable prediction equations were proposed based on the structural characteristics. Finally, to solve the issue that existing research still cannot accurately reflect the acceleration amplification coefficient of NSCs with different dynamic characteristics in main structures with different periods, a normalized floor response spectrum is proposed that can simultaneously consider the effects of input ground motion characteristics and the main structure, which can be better used in the seismic design of NSCs.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Research on the design floor response spectrum of buildings by dynamic analysis

  • 期刊论文

  • 发表日期：

    2025年4月1日

查看全文
  • Rongheng Liu,
  • Wen Bai,
  • Junwu Dai,
  • Zhipeng Shao,
  • Tao Jiang,
  • Bingzhang Zhao

摘要

The seismic design forces of nonstructural components (NSCs) in buildings are closely related to floor acceleration response amplification. To investigate the differences in acceleration responses of structures with different structural types, fundamental periods, and seismic design levels, 56 reinforced concrete and steel structures with fundamental periods ranging from 0.37 s to 5.68 s were selected. For each structure, 100 sets of earthquake motions were used as inputs for elastic time history analysis. Based on the resulting 26,500 sets of floor acceleration response data, the amplification rules of peak floor acceleration/peak ground acceleration (PFA/PGA) along the height of various structures and the corresponding floor response spectrum characteristics were studied. The nonlinear changes of PFA/PGA along the height of long period structures were compared with the codes of different countries. Moreover, more suitable prediction equations were proposed based on the structural characteristics. Finally, to solve the issue that existing research still cannot accurately reflect the acceleration amplification coefficient of NSCs with different dynamic characteristics in main structures with different periods, a normalized floor response spectrum is proposed that can simultaneously consider the effects of input ground motion characteristics and the main structure, which can be better used in the seismic design of NSCs.