Abstract Increasing global demand for a sustainable society is driving the development of multi-storey light-frame wood structures, yet their complex structural components make detailed finite element modelling (FEM) impractical. The structural response of these buildings cannot typically be accurately captured with traditional simplified computational methods that rely on the use of parameter-based spring hysteretic properties or mathematical derivation. This paper proposes a powerful simplified nonlinear FEM procedure capable of accurately and efficiently capturing the responses of single-storey and multi-storey light-frame wood shear wall structures with respect to lateral displacement against base shear. The proposed procedure involves the separation of flexural and shear deformations from the total deformation resulting from the detailed model pushover analysis. The nonlinear curves of these deformation components against base shear are used to develop the properties of simplified axial and shear link models based on an approach equating external and internal work. To demonstrate the accuracy of the simplified FEM in conducting pushover analysis for structures with different structural details, 6 single-storey shear walls and 4 four-storey shear walls were modelled using this nonlinear simplified FEM analysis procedure. Compared with detailed FEM procedure, the developed simplified FEM method accurately captured the pushover analysis results with acceptable discrepancies and significantly less computational time. This proposed simplified procedure has the potential for wide applicability in structural design and analysis through the establishment of a simplified model database and the embedment of this database into any commonly used commercial FEM software.

中文翻译：

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轻型框架木剪力墙结构侧向荷载分析的简化数值方法

摘要 全球对可持续社会日益增长的需求正在推动多层轻框架木结构的发展，但其复杂的结构组件使得详细的有限元建模 (FEM) 变得不切实际。这些建筑物的结构响应通常无法通过传统的简化计算方法来准确捕获，这些方法依赖于使用基于参数的弹簧滞回特性或数学推导。本文提出了一种强大的简化非线性 FEM 程序，能够准确有效地捕捉单层和多层轻框架木剪力墙结构相对于横向位移对基础剪力的响应。建议的程序涉及将弯曲和剪切变形从详细模型推覆分析产生的总变形中分离出来。这些变形分量对基础剪力的非线性曲线用于基于外部功和内部功相等的方法来开发简化的轴向和剪力链接模型的属性。为了证明简化 FEM 在对具有不同结构细节的结构进行 Pushover 分析时的准确性，使用这种非线性简化 FEM 分析程序对 6 个单层剪力墙和 4 个四层剪力墙进行建模。与详细的 FEM 程序相比，开发的简化 FEM 方法准确地捕获了具有可接受差异和显着减少计算时间的 Pushover 分析结果。