In-plane seismic behaviour of Cross-Laminated Timber (CLT) walls is influenced by panel-to-panel and panel-to-foundation mechanical connections, which consist of hold-downs and angle brackets. Due to the platform constructional technology, also the orthogonal to grain timber-to-timber contact is involved in the seismic response of the panels. At date, literature theoretical approaches to evaluating the flexural load-bearing capacity of CLT panels focused the attention on the schematization of hold-downs and angle brackets only, under evaluating the role of timber compressed in perpendicular direction.

In this paper the influence of the orthogonal to grain timber properties on the overall seismic behaviour of CLT walls has been investigated, proposing a general theoretical model to schematize the panel-to-panel and panel-to-foundation connections. A parabola-rectangle constitutive behaviour has been defined to describe the orthogonal to grain timber behaviour in the connection zones, while hold-downs and angle brackets are modelled adopting literature models. Five different failure conditions, described by mathematical formulations, able to describe the entire axial force-bending moment interaction domain have been defined.

The proposed model has been also employed to schematize the connection zones in multi-storey CLT walls with openings, allowing to investigate the effect of the orthogonal to grain properties on its seismic behaviour. Results of nonlinear analyses demonstrate a significant influence of the orthogonal to grain timber properties on seismic behaviour of the walls, affecting its strength, stiffness, ductility and collapse mechanisms.

跨层压木材（CLT）墙的面内地震行为受面板对面板和面板对基础的机械连接的影响，这些机械连接包括压紧件和尖括号。由于平台的构造技术，垂直于谷物木材与木材的接触也涉及面板的地震响应。迄今为止，在评估木材在垂直方向上的作用下，评估CLT面板挠曲承载力的文献理论方法仅将注意力集中在压紧件和尖括号的图解上。

在本文中，研究了正交于纹理木材特性对CLT墙整体抗震性能的影响，提出了一个通用的理论模型来图解面板到面板和面板到地基的连接。定义了抛物线-矩形的本构行为来描述连接区域中与木材垂直的行为，同时采用文献模型对压紧件和尖括号进行了建模。已经定义了五种不同的失效条件，可以用数学公式描述，它们可以描述整个轴向力-弯矩相互作用域。

所提出的模型也已被用来示意多层CLT墙体中带有开口的连接区域，从而可以研究正交于晶粒特性对其地震行为的影响。非线性分析的结果表明，正交于木纹木材特性对墙的抗震性能产生了重大影响，从而影响了墙的强度，刚度，延展性和坍塌机理。