当前位置: X-MOL 学术Bull. Earthquake Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Numerical simulation of reinforced concrete shear walls using force-based fiber element method: effect of damping type and damping ratio
Bulletin of Earthquake Engineering ( IF 4.6 ) Pub Date : 2021-09-11 , DOI: 10.1007/s10518-021-01221-x
Muhammet Karaton 1 , Ömer Faruk Osmanlı 1 , Mehmet Eren Gülşan 2
Affiliation  

Reinforced concrete shear walls are the structural elements that considerably increase the seismic performance of buildings. Fiber elements and fiber-spring elements are used for the modeling of the inelastic behavior of these elements. The Fiber Element Method provides a certain amount of accuracy for the modeling of reinforced concrete shear walls. However, the studies related to this method are still in progress. In this study, different damping ratios and different damping types used in the structural damping are investigated by using the force-based fiber element method for reinforced concrete shear wall structures. Two shear wall structures subjected to seismic loads are used to compare numerical analysis and experimental results. The comparisons are achieved according to the absolute maximum values of the overturning moment, the base shear force, and the roof displacement. Rayleigh damping and stiffness-proportional damping types for the damping ratios that vary between 2 and 3% provide better results than mass-proportional damping. Additionally, the optimum number of fiber elements for Rayleigh and stiffness-proportional damping types is determined for the optimum damping ratio that provides minimum differences between numerical analysis and experimental results. For these damping types, when the length of a fiber is smaller than 3% of the longitudinal length of the shear wall at the optimum damping ratios, the roof displacement differences between numerical analysis and experimental results are less than 2.5%.



中文翻译:

基于力的纤维单元法的钢筋混凝土剪力墙数值模拟:阻尼类型和阻尼比的影响

钢筋混凝土剪力墙是显着提高建筑物抗震性能的结构元件。纤维单元和纤维弹簧单元用于对这些单元的非弹性行为进行建模。纤维单元法为钢筋混凝土剪力墙的建模提供了一定的精度。然而,与该方法相关的研究仍在进行中。在本研究中,采用基于力的纤维单元法对钢筋混凝土剪力墙结构进行了结构阻尼的不同阻尼比和不同阻尼类型的研究。两个受地震荷载作用的剪力墙结构被用来比较数值分析和试验结果。根据倾覆力矩的绝对最大值进行比较,基础剪力和屋顶位移。瑞利阻尼和刚度比例阻尼类型的阻尼比在 2% 到 3% 之间变化,提供比质量比例阻尼更好的结果。此外,瑞利和刚度比例阻尼类型的纤维单元的最佳数量是为最佳阻尼比确定的,从而提供了数值分析和实验结果之间的最小差异。对于这些阻尼类型,在最佳阻尼比下,当纤维长度小于剪力墙纵向长度的3%时,数值分析与试验结果的顶板位移差异小于2.5%。瑞利阻尼和刚度比例阻尼类型的阻尼比在 2% 到 3% 之间变化,提供比质量比例阻尼更好的结果。此外,瑞利和刚度比例阻尼类型的纤维单元的最佳数量是为最佳阻尼比确定的,从而提供了数值分析和实验结果之间的最小差异。对于这些阻尼类型,在最佳阻尼比下,当纤维长度小于剪力墙纵向长度的3%时,数值分析与试验结果的顶板位移差异小于2.5%。瑞利阻尼和刚度比例阻尼类型的阻尼比在 2% 到 3% 之间变化,提供比质量比例阻尼更好的结果。此外,瑞利和刚度比例阻尼类型的纤维单元的最佳数量是为最佳阻尼比确定的,从而提供了数值分析和实验结果之间的最小差异。对于这些阻尼类型,在最佳阻尼比下,当纤维长度小于剪力墙纵向长度的3%时,数值分析与试验结果的顶板位移差异小于2.5%。瑞利和刚度比例阻尼类型的纤维单元的最佳数量是为使数值分析和实验结果之间的差异最小的最佳阻尼比确定的。对于这些阻尼类型,在最佳阻尼比下,当纤维长度小于剪力墙纵向长度的3%时,数值分析与试验结果的顶板位移差异小于2.5%。瑞利和刚度比例阻尼类型的纤维单元的最佳数量是为使数值分析和实验结果之间的差异最小的最佳阻尼比确定的。对于这些阻尼类型,在最佳阻尼比下,当纤维长度小于剪力墙纵向长度的3%时,数值分析与试验结果的顶板位移差异小于2.5%。

更新日期:2021-09-13
down
wechat
bug