摘   要：密肋夹芯保温外挂墙板是一种新型轻质外挂墙板，其工程应用中的结构设计主要包括墙板整体承载力设计、墙板与主体结构连接节点承载力设计两大核心内容，而目前针对该类墙板尚未形成系统完善的结构设计方法，制约了其工程推广应用。为此，本文提出了一种密肋夹芯保温外挂墙板抗弯承载力简化计算方法，并给出了常用设计条件下的构造建议，有效提升了该墙板的工程适用性。其中，针对墙板与主体结构的点支承连接节点，本文提出了一种可实现墙板上下节点一体化集成、承重限位一体化安装的构造形式，并基于节点受力分析建立了适配的承载力设计方法。结合某试点工程，对所提出的墙板及连接节点承载力设计方法开展了工程应用验证。结果表明：密肋夹芯保温外挂墙板及其连接节点均能够满足外挂墙板的性能设计目标。研究成果可为同类轻质保温外挂墙板的设计方法、节点构造与工程应用提供参考。

Abstract:  The multi-ribbed sandwich insulated external wall panel is a new type of lightweight external wall panel. The structural design in its engineering application primarily consists of two core aspects: the bearing capacity design of the wall panel as a whole, and the bearing capacity design of the connection joints between the wall panel and the main structure. However, a systematic and comprehensive structural design method for this type of wall panel has not yet been established, which hinders its widespread engineering application and promotion. To address this issue, this paper proposes a simplified calculation method for the flexural bearing capacity of the multi-ribbed sandwich insulated external wall panel, and provides construction recommendations under commonly used design conditions, effectively enhancing the engineering applicability of the panel. Furthermore, for the point-supported connection joints between the wall panel and the main structure, this paper presents a novel connection configuration that enables the integrated design of the upper and lower joints of the wall panel, as well as the integrated installation of load-bearing and positioning functions. Based on the mechanical analysis of the joints, a corresponding bearing capacity design method is established. Combined with a pilot engineering project, the proposed bearing capacity design methods for the wall panel and its connection joints are validated through engineering application. The results demonstrate that both the multi-ribbed sandwich insulated external wall panel and its connection joints are capable of meeting the performance design objectives for external wall panels. The research findings may serve as a reference for the design methods, joint detailing, and engineering application of similar lightweight insulated external wall panels.