Experimental Seismic Performance and Failure Mechanisms of a Novel Prefabricated Monolithic Lattice–Earth Composite Wall
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Le résumé fourni par la source
Earthen materials are attractive sustainable building solutions due to their low embodied energy and ecological benefits. However, their inherent weaknesses, such as low strength and poor durability, severely restrict modern engineering applications. Traditional physical or chemical modification methods struggle to balance significant improvement in mechanical performance with the preservation of their core sustainable attributes. To overcome this long-standing challenge, this study proposes a paradigm-shifting solution: a prefabricated monolithic lattice–earth composite wall structure. This system abandons the single-material-centered modification approach. Instead, through macroscopic system-level composite design, reinforced concrete lattices and earthen blocks are prefabricated into integral wall panels in a factory. These panels then work collaboratively with the peripheral frame through reliable integral connections. Via quasi-static tests and theoretical analysis on four scaled wall specimens with different design parameters, this study systematically reveals the working mechanism and performance regulation principles of this composite system. The core findings indicate: (1) The system achieves multiple seismic defense lines and a controllable energy dissipation path through a sequential damage mechanism: “earthen material cracking and friction → lattice yielding and energy dissipation → final defense by the frame.” (2) The ratio of the equivalent lateral stiffness of the prefabricated wall panel to the stiffness of the outer frame is a key dimensionless design parameter controlling the failure mode (ductile shear or brittle bending), and the lattice configuration is an effective means to adjust this parameter. (3) Based on tests and an equivalent stiffness model, quantitative design guidelines are proposed, focusing on optimizing lattice density (recommended: 3–4 lattice columns), limiting the aspect ratio (preferably ≤1.5), and ensuring “strong connections.” This study demonstrates that the system, without sacrificing the intrinsic sustainable advantages of earthen materials, successfully endows them with high performance, meeting modern seismic code requirements and potential for prefabricated construction through system integration innovation. It provides a new path with theoretical foundation and practical feasibility to resolve the core contradiction in the modernization of traditional earthen buildings—the incompatibility between ecological attributes and engineering performance. This lays an important foundation for developing next-generation high-performance green building structural systems.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Experimental Seismic Performance and Failure Mechanisms of a Novel Prefabricated Monolithic Lattice–Earth Composite Wall
- Date Crossref
- 11/02/2026
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Xi'an University of Science and Technology pays non établi dans la noticeUniversité ou école supérieure
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China Earthquake Administration pays non établi dans la noticeStructure de recherche
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China Railway Group (China) pays non établi dans la noticeEntreprise
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China XD Group (China) pays non établi dans la noticeEntreprise
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China Coal Technology and Engineering Group Corp (China) pays non établi dans la noticeEntreprise
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Modern Electron (United States) pays non établi dans la noticeEntreprise
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Shanghai Xiandai Architectural Design pays non établi dans la noticeStructure de recherche
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Zhejiang Modern Architectural Design & Research Institute pays non établi dans la noticeStructure de recherche
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School of Architecture and Civil Engineering pays non établi dans la noticeUniversité ou école supérieure
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School-Enterprise Joint Research Center of Underground Structure Earthquake Resistance pays non établi dans la noticeStructure de recherche
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China Railway 20TH Bureau Group Corporation Limited pays non établi dans la noticeInstitution
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Ltd. Shaanxi Xike Huayan Construction Engineering Co. pays non établi dans la noticeEntreprise
Xi'an University of Science and Technology, China Earthquake Administration et China Railway Group (China), avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.