Analysis of torsional response of RC frame-shear wall structures with partial columns sliding at upper ends under earthquakes

作者：Lü, Wenlong; Wu, Bo^*

来源：Journal of Vibration and Shock, 2018, 37(8): 132-140.

DOI：10.13465/j.cnki.jvs.2018.08.021

• Accidental eccentricity
• Frame
• shear wall structures
• Horizontal displacements
• Length-to-width ratio
• Partial columns
• Rc frame-shear wall structures
• Sliding at column upper ends
• Torsional response

Based on extensive numerical analyses, torsional response of the frame-shear wall structures with partial columns sliding at upper ends (FSPCS), due to accidental eccentricity and induced by earthquakes, have been investigated. Influences of the structural period ratio and length-to-width ratio on such response have been revealed. A comparison between the torsional response of the FSPCS and that of the conventional frame-shear wall structure (CFSWS) was presented. It can be found that: ①when the accidental eccentricity is taken into account, the elastic torsional response of the FSPCS is less than that of the CFSWS, and the influences of the structural period ratio and length-to-width ratio on the FSPCS are almost the same as those on the CFSWS;②with the increasing of the structural period ratio, the enhancing range of the top storey's maximum horizontal displacement of the FSPCS under major earthquake generally increases, but in most cases is less than that of the CFSWS. Meanwhile the enhancing range related to the FSPCS under major earthquake is lower than that under minor earthquake;③with the increasing of the length-to-width ratio, the enhancing range of the top storey's maximum horizontal displacement of the FSPCS under major earthquake generally exhibits a trend of increasing first and then decreasing later, and the enhancing is significant when the length-to-width ratio ranges from 1 to 2.

• 出版日期2018-4-28
• 单位华南理工大学