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Study on strength damage model considering resistivity and failure characteristics of the frozen soil-rock mixture under different loading rates

文献类型：期刊论文

作者Wang, Shuangjiao1,4,5; Li, Zhiqing1,4,5; Gao, Zhiao1,3; Qi, Zhiyu1,4,5; Sun, Kai1,4,5; Hu, Ruilin1,4,5; Zhou, Yingxin2
刊名CANADIAN GEOTECHNICAL JOURNAL
出版日期2024-06-05
页码16
关键词frozen soil-rock mixture improved Duncan-Chang model rate effect resistivity strength damage
ISSN号0008-3674
DOI10.1139/cgj-2023-0283
英文摘要The strength damage and deformation failure of frozen soil-rock mixture (FSRM) often restrict the safety of the major engineering construction in cold areas or the spatial development of urban underground water-rich rock and soil masses. To investigate the uniaxial strength damage evolution and failure characteristics of FSRM under different loading rates (0.3, 0.6, 3, 6, 30, and 60 mm min -1 ) in the quasi-static range, resistivity monitoring and image recognition technology were used to study the time-stress-volumetric strain-resistivity changes. The results indicate that the peak stress, peak strain, initial yield modulus, and tangential modulus of FSRM increase rapidly before increasing slowly as the loading rate increases, and there are critical loading rates and post-peak failure phenomenon. Three distinct types of failure modes, bulge failure, oblique shear failure, and fragmentation failure were observed at low (0.3-0.6 mm min -1 ), medium (3-6 mm min -1 ), and high loading rates (30-60 mm min -1 ), respectively. The macroscopic failure of the FSRM at different loading rates arises from a combination of strain rate hardening of the strength and damage softening of the structure. To predict the stress-strain characteristics at various loading rates, a damage prediction model with a damage variable correction factor considering residual strength was employed based on the improved Duncan-Chang model and damage theory of electrical resistivity, and the predicted results were in good agreement with the experimental data.
资助项目Development Plan of Yunnan Province[202103AA080013]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:001238876500001
出版者CANADIAN SCIENCE PUBLISHING
源URL[http://119.78.100.198/handle/2S6PX9GI/41591]  
专题中科院武汉岩土力学所
通讯作者Li, Zhiqing
作者单位1.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Yunnan Commun Investment & Construct Grp Co Ltd, Kunming 650050, Yunnan, Peoples R China
3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Shuangjiao,Li, Zhiqing,Gao, Zhiao,et al. Study on strength damage model considering resistivity and failure characteristics of the frozen soil-rock mixture under different loading rates[J]. CANADIAN GEOTECHNICAL JOURNAL,2024:16.
APA Wang, Shuangjiao.,Li, Zhiqing.,Gao, Zhiao.,Qi, Zhiyu.,Sun, Kai.,...&Zhou, Yingxin.(2024).Study on strength damage model considering resistivity and failure characteristics of the frozen soil-rock mixture under different loading rates.CANADIAN GEOTECHNICAL JOURNAL,16.
MLA Wang, Shuangjiao,et al."Study on strength damage model considering resistivity and failure characteristics of the frozen soil-rock mixture under different loading rates".CANADIAN GEOTECHNICAL JOURNAL (2024):16.

入库方式： OAI收割

来源：武汉岩土力学研究所

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