Failure mechanisms in CLT shearwalls with cut-out openings

IF 3.9 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Materials and Structures Pub Date : 2025-09-09 DOI:10.1617/s11527-025-02761-3

Mohammadreza Khajehpour, Ghasan Doudak, Riccardo Fanti, Daniele Casagrande

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Abstract

Review of the existing literature on monolithic CLT shear walls with openings reveals that a notable gap in knowledge on the panel failure modes still exists. A very limited number of shearwall specimens involved failure in the CLT panel, and understanding of how such failure mechanism can impact the overall behaviour of shearwalls is yet to be fully established. This study presents an experimental investigation on 12 monolithic CLT shearwalls with a single opening (e.g. door or window opening) designed to reach failure in the CLT panel. The test results were predicted by means of numerical models. All shearwalls tested exhibited crack initiation in the lintel or parapet as an initial failure while the ultimate failure occurred in the hold-down. Two different scenarios for crack propagation were observed with significant impact on the behaviour of the wall. The numerical prediction was reasonable in terms of the overall wall behaviour and load–displacement curves, as well as the opening and propagation of cracks in the CLT panels.

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具有切割开口的CLT剪力墙的破坏机制

回顾现有关于带开口的单片CLT剪力墙的文献，发现在面板破坏模式方面的知识仍然存在显著的差距。涉及CLT面板破坏的剪力墙样本数量非常有限，并且对这种破坏机制如何影响剪力墙整体行为的理解尚未完全建立。本研究对12个单片CLT剪力墙进行了实验研究，这些剪力墙具有单个开口（例如门或窗开口），旨在达到CLT面板的破坏。利用数值模型对试验结果进行了预测。所有剪力墙的初始破坏均发生在门楣或女儿墙处，而最终破坏发生在压下阶段。观察了两种不同的裂纹扩展情况，对墙体的行为产生了重大影响。从墙体整体性能、荷载-位移曲线以及CLT板裂缝的张开和扩展情况来看，数值预测是合理的。

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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来源期刊

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.