SGER: Material and Structural Response of Historic Hakka Rammed Earth Structures

SGER：历史客家夯土结构的材料和结构响应

• 批准号: 0908199
• 负责人: Ruifeng Liang
• 金额: $ 8.75万
• 依托单位: West Virginia University Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-01-15 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908199&HistoricalAwards=false
• 关键词: SGER; Material; Structural; Response; Historic

The in-service Hakka rammed earth structures, i.e. Fujian Tulou of China, are historic and unique in design, construction and performance. The research effort will attempt to better understand their thermo-mechanical and aging responses under thermal, hurricane and earthquake loads. The scope of work will include to: 1) identify constituent materials in rammed earth and investigate durability of the constituents; 2) investigate structural integrity of Hakka buildings for structural efficiency under extreme loads, including modes of failure and verify any self-healing of cracks; 3) analyze heat transfer process through rammed earth wall for thermal comfort and energy-efficiency; 4) evaluate potential benefits of material and structural performance for implementation in modern constructions; and 5) identify other structural issues of scientific interest for further study and develop a follow-on proposal for international collaboration. The research approach to be used includes to: 1) review reports and articles on Hakka earth structures with reference to material selection and structural design; 2) visit Hakka earth structures and collect core extraction samples and field data nondestructively; 3) evaluate thermal, mechanical, chemical and morphological properties from wall samples through core extraction; and 4) analyze their response through finite element modeling.The implications of findings of this research in terms of their application to modern structures are to: 1) identify durable rammed earth material systems; 2) advance rammed earth construction technique using reinforcing wall ribs; 3) build affordable housing and space-efficient office towers in urban areas; 4) develop disaster-resistant structural configurations; and 5) construct energy-efficient and green buildings. One graduate student will be trained to understand the Hakka rammed earth construction techniques. The research findings will be disseminated through journal publications, conference presentations, internet posting, out-reaching initiative and networking with professionals, who would be interested in Hakka building technology. This award is co-funded by OISE at NSF.

福建土楼是一座历史悠久、造型独特的客家夯土建筑。研究工作将试图更好地了解它们在热、飓风和地震载荷下的热机械和老化反应。研究范围包括：1）鉴定夯土的组成材料，并调查其耐久性; 2）调查客家建筑在极端荷载下的结构完整性，包括破坏模式，并验证裂缝的自我修复; 3）分析夯土墙的热传递过程，以获得热舒适性和能源效率; 4）评估材料和结构性能在现代建筑中的潜在效益; 5）确定其他具有科学意义的结构问题，以供进一步研究，并为国际合作制定后续建议。研究方法包括：1）查阅有关客家土楼建筑材料选择和结构设计的报告和文章; 2）参观客家土楼建筑，非破坏性地收集岩芯样品和现场数据; 3）通过岩芯提取对墙体样品的热、力学、化学和形态性质进行评估;本研究结果对于现代结构的应用具有以下启示：1）确定耐久性的夯土材料体系，2）改进夯土结构的加筋技术，3）提高夯土结构的抗震性能，4）提高夯土结构的抗震性能。3）在城市地区建造经济适用住房和节省空间的办公大楼; 4）发展抗灾结构配置; 5）建造节能和绿色建筑。培养研究生一名，使其了解客家夯土建筑技术。研究结果将透过期刊出版、会议简报、互联网张贴、外展活动及与对客家建筑技术感兴趣的专业人士建立联系等方式传播。该奖项由NSF的OISE共同资助。

项目成果

Material characterization and structural response under earthquake loads of hakka rammed earth buildings

客家夯土建筑地震荷载下的材料特性及结构响应

• DOI: 10.54113/j.sust.2021.000003
• 发表时间: 2021
• 期刊: Sustainable Structures
• 作者: Liang, Ruifeng;Stanislawski, Daniel;Hota, Gangarao
• 通讯作者: Hota, Gangarao