Experimental investigation of pulse‐type ground motion effects on a steel building with nonlinear viscous dampers
Experimental investigation of pulse‐type ground motion effects on a steel building with nonlinear viscous dampers
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非线性粘滞阻尼器钢结构脉冲型地震动效应实验研究
DOI：
10.1002/eqe.3544
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发表时间：
2021
影响因子：
4.5
通讯作者：
Phillips, Brian M.
中科院分区：
文献类型：
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作者：
Dong, Baiping;Ricles, James M.;Phillips, Brian M.
近断层脉冲型地震动具有与普通远场地震动显著不同的特征。了解脉冲型地震动对结构的独特影响并将其纳入抗震设计中至关重要。采用真实的时混合模拟（RTHS）试验方法，研究了近断层脉冲型地震动对一个设置非线性粘滞阻尼器的3层钢结构结构反应的影响。该结构设计为规范规定的设计基础剪切强度的75%。在RTHS中，实验分区和数值分区之间的作用和反作用循环是在真实的时间内执行的，准确地捕捉到脉冲型地震动的速度脉冲效应。RTHS使用了一组10个设计基准地震（DBE）水平的未标度脉冲型地震动。试验结果验证了RTHS是一种可行的方法，用于实验研究具有率相关阻尼装置的结构的复杂结构行为，并表明阻尼器在涉及脉冲型地震动的地震灾害缓解效果中是基本有效的。脉冲型地震动下的平均峰值层间位移比为1.08%弧度，COV值小于0.3，表明结构体系在DBE水平脉冲型地震动下可达到ASCE 7-10 Occupational Category III结构的抗震性能目标。此外，一个非线性麦克斯韦模型的非线性粘滞阻尼器进行了验证，为未来的结构可靠性数值研究，涉及脉冲型地面运动。
Near‐fault pulse‐type ground motions have characteristics that are substantially different from ordinary far‐field ground motions. It is essential to understand the unique effects of pulse‐type ground motions on structures and include the effects in seismic design. This paper investigates the effects of near‐fault pulse‐type ground motions on the structural response of a 3‐story steel structure with nonlinear viscous dampers using the real‐time hybrid simulation (RTHS) testing method. The structure is designed for 75% of the code‐specified design base shear strength. In the RTHS, the loop of action and reaction between the experimental and numerical partitions are executed in real time, accurately capturing the velocity pulse effects of pulse‐type ground motions. A set of 10 unscaled pulse‐type ground motions at the design basis earthquake (DBE) level is used for the RTHS. The test results validated that RTHS is a viable method for experimentally investigating the complicated structural behavior of structures with rate‐dependent damping devices, and showed that the dampers are essentially effective in earthquake hazard mitigation effects involving pulse‐type ground motions. The average peak story drift ratio under the set of pulse‐type ground motions is 1.08% radians with a COV value less than 0.3, which indicated that structural system would achieve the ASCE 7–10 seismic performance objective for Occupancy Category III structures under the DBE level pulse‐type ground motions. Additionally, a nonlinear Maxwell model for the nonlinear viscous dampers is validated for future structural reliability numerical studies involving pulse‐type ground motions.
影响因子：
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作者：
F. Waldhauser;W. Ellsworth
通讯作者：
F. Waldhauser;W. Ellsworth
南加州圣哈辛托断裂带地震滑移分布及其意义
DOI：
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发表时间：
1975
期刊：
影响因子：
--
作者：
W. Thatcher;J. Hileman;T. Hanks
通讯作者：
T. Hanks