Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Undrained deformation behavior of marine clay under two-way cyclic loading
In offshore engineering, marine clays, which are widespread in the southeastern coastal areas of China, may be subjected to two-way cyclic stresses. To experimentally investigate the effects of the two-way cyclic stress with low-stress amplitude on the cyclic behavior of soft marine clay, a series of triaxial tests is performed on intact marine clay from Zhoushan covering various values of the cyclic stress ratio (CSR) and confining pressure (p′0). Several useful conclusions are inferred: First, the double-amplitude axial strain (ε DA), dynamic axial modulus (E), and energy dissipation (W) increase with the CSR. Second, under the same CSR, the value of ε DA is independent of p′0. The values of E and W increase with increasing p′0 during cyclic loadings, whereas the normalized modulus and normalized energy are independent of p′0. Third, an allowable CSR is proposed based on the strain behavior and energy concept. Based on the experimental results, two equations are established to predict the dynamic axial modulus and double-amplitude axial strain.
Undrained deformation behavior of marine clay under two-way cyclic loading
In offshore engineering, marine clays, which are widespread in the southeastern coastal areas of China, may be subjected to two-way cyclic stresses. To experimentally investigate the effects of the two-way cyclic stress with low-stress amplitude on the cyclic behavior of soft marine clay, a series of triaxial tests is performed on intact marine clay from Zhoushan covering various values of the cyclic stress ratio (CSR) and confining pressure (p′0). Several useful conclusions are inferred: First, the double-amplitude axial strain (ε DA), dynamic axial modulus (E), and energy dissipation (W) increase with the CSR. Second, under the same CSR, the value of ε DA is independent of p′0. The values of E and W increase with increasing p′0 during cyclic loadings, whereas the normalized modulus and normalized energy are independent of p′0. Third, an allowable CSR is proposed based on the strain behavior and energy concept. Based on the experimental results, two equations are established to predict the dynamic axial modulus and double-amplitude axial strain.
Undrained deformation behavior of marine clay under two-way cyclic loading
Zhao, Liuyuan (Autor:in) / Shan, Zhigang (Autor:in) / Wang, Mingyuan (Autor:in) / Ni, Weida (Autor:in) / Jin, Hongxu (Autor:in) / Shi, Li (Autor:in)
Marine Georesources & Geotechnology ; 42 ; 465-474
02.04.2024
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Undrained deformation behavior of saturated soft clay under long-term cyclic loading
| Online Contents | 2013
Undrained deformation behavior of saturated soft clay under long-term cyclic loading
| British Library Online Contents | 2013
Post-cyclic undrained behavior of marine soft clay subjected to partially drained cyclic loading
| Taylor & Francis Verlag | 2024
Undrained monotonic shear behavior of marine soft clay after long-term cyclic loading
| Taylor & Francis Verlag | 2020