详情

原文传递 Bond-Slip Mechanism of Rammed Earth-Timber Joints in Chinese Hakka Tulou Buildings

题名：	Bond-Slip Mechanism of Rammed Earth-Timber Joints in Chinese Hakka Tulou Buildings
正文语种：	eng
作者：	Luo, Yi;Zhong, Haopeng;Ding, Nan;Ni, Pengpeng;Xu, Yuye;Peng, Xingqian;Easa, Said M.
作者单位：	Huaqiao Univ Coll Civil Engn Xiamen 361021 Peoples R China;Huaqiao Univ Coll Civil Engn Xiamen 361021 Peoples R China;Huaqiao Univ Coll Civil Engn Xiamen 361021 Peoples R China;Sun Yat Sen Univ Sch Civil Engn Guangzhou 510275 Peoples R China;Huaqiao Univ Coll Civil Engn Xiamen 361021 Peoples R China;Huaqiao Univ Coll Civil Engn Xiamen 361021 Peoples R China;Ryerson Univ Dept Civil Engn Toronto ON M5B 2K3 Canada
关键词：	Chinese Hakka Tulou;Fujian Tulou;Rammed earth;Bond-slip;Timber beam
摘要：	Hakka Tulou, a traditional form of Chinese building made of rammed earth and a timber frame, is characterized by its remarkable geometries, excellent thermal comfort, sustainability, and cultural value. The joints between rammed-earth walls and timber floor beams are critical structural elements and require an in-depth understanding of the load-bearing capacity for Hakka Tulou. To the best knowledge of the authors, this is the first study that investigates the bond-slip mechanism between timber beams and rammed earth. Eight pull-out tests were conducted on rammed earth-timber (RET) joints, in which the influence of compressive load, embedment length, and surface roughness was systematically studied. RET joints were analyzed based on the elastic solid-to-solid and pile-to-soil behaviors. The experimental results show that the bond-slip behavior could mainly be attributed to the friction, which depended on the normal stress and matric suction of unsaturated compacted earth. The test results were satisfactorily explained by geotechnical theories. Given the initial strength resulting from compaction and mobilized friction due to compression, a bond-slip model for rammed-earth structures was proposed. The parameters for the elastic zone were suggested for use in structural design. Rammed-earth buildings should be analyzed based on the principles of unsaturated soil mechanics, rather than elastic solid mechanics, even though rammed earth and underground soil are under fundamentally different conditions. The proposed design method for earth-timber joints could be applied to analyze Hakka Tulou or other similar earth buildings. (C) 2021 American Society of Civil Engineers.
出版年：	2021
期刊名称：	Journal of structural engineering
卷：	147
期：	5