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frozen sand-concrete interface direct shear behavior under constant normal load and constant normal height boundary

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2022年第11期23卷 917-932页

作者： Jian CHANG Jian-kun LIU Ya-li LI School of Civil Engineering Beijing Jiaotong UniversityBeijing 100044China School of Civil Engineering Sun Yat-sen UniversityZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China

The shear strength properties of the frozen sand–structure interface are critical for evaluating the serviceability of pile foundations in frozen *** shear characteristics of the frozen sand–concrete interface were studied with two boundary conditions(constant normal load(CNL)and constant normal height(CNH)),at three normal stresses(100,200,and 300 k Pa),and at three temperatures(-2,-5,and-8℃).A detailed comparative analysis was performed to explore the principal factors affecting the shear/normal-shear *** results showed that the shear behavior of the frozen sand–concrete interface under CNL was similar to that under *** shear stress–shear displacement exhibited strain *** temperature and normal stress were the major influences on normal *** lower the temperature and the higher the normal stress,the greater was the elastic shear *** peak shear stress and critical shear stress exhibited a dependence on normal *** exponential growth in the peak shear stress was observed as the temperature *** shear stress was dependent on *** value and percentage of peak ice-cementation in peak shear stress was affected by temperature and normal stress.

关键词： frozen sand–concrete interface Peak shear strength Critical shear strength Ice-cementation Boundary condition

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