Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Backbone Curve Model of Saturated Coarse-Grained Soil Under Train-Induced Cyclic Loading
Deformation of the subgrade bed layer under cyclic dynamic loading is one of the key factors to evaluate the operating performance of subgrade. To study the stress–strain characteristics of coarse-grained soil (CGS) under cyclic loading, a series of large-scale dynamic triaxial tests were carried out at different confining pressures and dynamic stress amplitudes. Results show that the variation of soil stiffness is closely related to cyclic number and confining pressure under cyclic loading. Backbone curve model is developed regarding confining pressure and cyclic number. Compared with the traditional backbone curve model, the proposed model can reflect the CGS stiffness hardening with the increasing of cyclic number and be used to determine the dynamic strength of CGS when the dynamic strain is less than the dynamic yield strain and to provide a reference for evaluating dynamic stress deformation stability for subgrade bed and design.
Backbone Curve Model of Saturated Coarse-Grained Soil Under Train-Induced Cyclic Loading
Deformation of the subgrade bed layer under cyclic dynamic loading is one of the key factors to evaluate the operating performance of subgrade. To study the stress–strain characteristics of coarse-grained soil (CGS) under cyclic loading, a series of large-scale dynamic triaxial tests were carried out at different confining pressures and dynamic stress amplitudes. Results show that the variation of soil stiffness is closely related to cyclic number and confining pressure under cyclic loading. Backbone curve model is developed regarding confining pressure and cyclic number. Compared with the traditional backbone curve model, the proposed model can reflect the CGS stiffness hardening with the increasing of cyclic number and be used to determine the dynamic strength of CGS when the dynamic strain is less than the dynamic yield strain and to provide a reference for evaluating dynamic stress deformation stability for subgrade bed and design.
Backbone Curve Model of Saturated Coarse-Grained Soil Under Train-Induced Cyclic Loading
Lecture Notes in Civil Engineering
Tutumluer, Erol (Herausgeber:in) / Chen, Xiaobin (Herausgeber:in) / Xiao, Yuanjie (Herausgeber:in) / Nie, Rusong (Autor:in) / Dong, Junli (Autor:in) / Leng, Wuming (Autor:in) / Zhou, Wenquan (Autor:in) / Li, Yafeng (Autor:in) / Mei, Huihao (Autor:in)
Advances in Environmental Vibration and Transportation Geodynamics ; Kapitel: 49 ; 763-778
08.04.2020
16 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic Loading
| DOAJ | 2020