Effects of Connector Modelling on Explicit Shell Finite Element Models of Cold-formed Steel Shear Walls

Proceedings of the Fourteenth International Conference on Computational Structures Technology Pub Date : 1900-01-01 DOI:10.4203/ccc.3.14.4

G. Alshamsi, L. Xu, Y. Shi, Y. Zou, X. Yao

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Abstract

The study presented herein is concerned with assessing the influence of connector elements on the behaviour of finite element models of high capacity cold-formed steel (CFS) shear walls. Recently, CFS shear walls have been used as an economic and light-weight seismic force resisting system (SFRS) in North America, however their applications are limited to mid-rise buildings. To push the state-of-the art, a preliminary testing programme of an innovative, higher-capacity CFS shear wall is conducted. The testing programme consists of monotonic and cyclic tests as well as screw connection assembly tests in double shear. Furthermore, explicit shell finite element models of the shear walls were developed and calibrated with the experimental results. Finally, a parametric study on the type of connector element was carried out to assess the behaviour of the wall. The results indicate that representing the screw-fastened connections using three uncoupled springs gave the best numerical estimate.

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接头建模对冷弯型钢剪力墙显式壳有限元模型的影响

本文提出的研究是关于评估连接元件对高容量冷弯型钢(CFS)剪力墙有限元模型性能的影响。近年来，CFS剪力墙作为一种经济、轻便的抗震体系在北美得到广泛应用，但其应用仅限于中高层建筑。为了推动最先进的技术，我们进行了一项创新的、更高容量的CFS剪力墙的初步测试计划。试验方案包括单调试验和循环试验以及双剪螺纹连接组合试验。在此基础上，建立了剪力墙的显式壳有限元模型，并根据试验结果进行了标定。最后，对连接单元的类型进行了参数化研究，以评估墙体的行为。结果表明，用三个不耦合的弹簧来表示螺钉紧固连接时给出了最好的数值估计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the Fourteenth International Conference on Computational Structures Technology

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