Practice-oriented finite element (FE) modelling strategies represent a fundamental tool for the seismic analysis and design of Cross Laminated Timber (CLT) structures. Although substantial research has been undertaken concerning the seismic behaviour of CLT buildings, practice-oriented FE modelling strategies are still at an early stage. This paper presents an upgrade of an existing practice-oriented FE design model for the seismic design of CLT structures. The upgrade is supported through the same modelling strategy presented by Christovasilis et al. (2020) adding some features of analytical equations models presented by Casagrande et al. (2016).

2D elements are used both for the modelling of CLT panels and for mechanical connections, which are represented by a horizontal strip with a height smaller than 7% of the height of the panel. Analytical equations for determining the elastic modulus of elasticity and the shear modulus of the horizontal strip are reported accounting for both rocking and sliding behaviour for single- and multi-panel CLT shearwalls, including the effect of the vertical loads by using a secant stiffness. The validation of the proposal is carried out in terms of the shearwall lateral stiffness through the results of experimental tests on full-scale shearwalls published by other authors and through a validation/comparison between a detailed non-linear model and the Christovasilis et al. (2020) strategy on two multi-storey seismic-resistant lateral systems configurations with different amount of vertical loads. Finally, a proposal for the initial layout of connections to reduce the iterative seismic design and analysis process for CLT buildings is presented through a case study.

面向实践的有限元 (FE) 建模策略是交叉层压木材 (CLT) 结构抗震分​​析和设计的基本工具。尽管已经对 CLT 建筑物的抗震性能进行了大量研究，但面向实践的有限元建模策略仍处于早期阶段。本文介绍了现有的面向实践的 FE 设计模型的升级，用于 CLT 结构的抗震设计。通过 Christovasilis 等人提出的相同建模策略支持升级。(2020) 添加了 Casagrande 等人提出的分析方程模型的一些特征。(2016)。

2D 元素用于 CLT 面板的建模和机械连接，由高度小于面板高度 7% 的水平条表示。报告了用于确定水平条的弹性模量和剪切模量的分析方程，考虑了单板和多板 CLT 剪力墙的摇摆和滑动行为，包括使用割线刚度的垂直载荷的影响。通过其他作者发表的全尺寸剪力墙的实验测试结果以及详细的非线性模型与 Christovasilis 等人的验证/比较，在剪力墙侧向刚度方面对提案进行了验证。(2020) 两种具有不同垂直载荷量的多层抗震横向系统配置的策略。最后，通过案例研究提出了连接初始布局的建议，以减少 CLT 建筑物的迭代抗震设计和分析过程。