Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Micro- and macro-observations of liquefaction of saturated sand around buried structures in centrifuge shaking table tests
https://orcid.org/0000-0003-2985-3237
Abstract A novel experimental method was designed to study the micro-behavior of saturated sand around a buried structure in centrifuge shaking table tests under strong simulated earthquake loading, in addition to the traditional macro-measurements. One free field test was first carried out as a reference, followed by one test with a deep buried structure and one with a shallowly buried structure. During the tests with the buried structure, high quality pictures of moving sand around the structure were recorded by a newly developed image acquisition system. By analyzing the interesting pictures at reasonable intervals using an image analysis software, the evolutions of microstructural features were obtained such as the orientations of the long axes of particles, the orientations of contact normals between particles and the average contact number of the interesting group of particles. The results showed that the evolutions of the micro-features were consistent with those of the macro-measurements such as excess pore pressures and accelerations, which help illuminate the mechanism of sand liquefaction.
Highlights Liquefaction of saturated sand around buried structures was studied by a novel method. The micro-behavior of saturated sand during earthquake loading was focused on. The evolutions of micro-features were consistent with those of macro-measurements.
Micro- and macro-observations of liquefaction of saturated sand around buried structures in centrifuge shaking table tests
https://orcid.org/0000-0003-2985-3237
Abstract A novel experimental method was designed to study the micro-behavior of saturated sand around a buried structure in centrifuge shaking table tests under strong simulated earthquake loading, in addition to the traditional macro-measurements. One free field test was first carried out as a reference, followed by one test with a deep buried structure and one with a shallowly buried structure. During the tests with the buried structure, high quality pictures of moving sand around the structure were recorded by a newly developed image acquisition system. By analyzing the interesting pictures at reasonable intervals using an image analysis software, the evolutions of microstructural features were obtained such as the orientations of the long axes of particles, the orientations of contact normals between particles and the average contact number of the interesting group of particles. The results showed that the evolutions of the micro-features were consistent with those of the macro-measurements such as excess pore pressures and accelerations, which help illuminate the mechanism of sand liquefaction.
Highlights Liquefaction of saturated sand around buried structures was studied by a novel method. The micro-behavior of saturated sand during earthquake loading was focused on. The evolutions of micro-features were consistent with those of macro-measurements.
Micro- and macro-observations of liquefaction of saturated sand around buried structures in centrifuge shaking table tests
https://orcid.org/0000-0003-2985-3237
Abstract A novel experimental method was designed to study the micro-behavior of saturated sand around a buried structure in centrifuge shaking table tests under strong simulated earthquake loading, in addition to the traditional macro-measurements. One free field test was first carried out as a reference, followed by one test with a deep buried structure and one with a shallowly buried structure. During the tests with the buried structure, high quality pictures of moving sand around the structure were recorded by a newly developed image acquisition system. By analyzing the interesting pictures at reasonable intervals using an image analysis software, the evolutions of microstructural features were obtained such as the orientations of the long axes of particles, the orientations of contact normals between particles and the average contact number of the interesting group of particles. The results showed that the evolutions of the micro-features were consistent with those of the macro-measurements such as excess pore pressures and accelerations, which help illuminate the mechanism of sand liquefaction.
Highlights Liquefaction of saturated sand around buried structures was studied by a novel method. The micro-behavior of saturated sand during earthquake loading was focused on. The evolutions of micro-features were consistent with those of macro-measurements.
Micro- and macro-observations of liquefaction of saturated sand around buried structures in centrifuge shaking table tests
Zhou, Jian (Autor:in) / Jiang, Jianhong (Autor:in) / Chen, Xiaoliang (Autor:in)
Soil Dynamics and Earthquake Engineering ; 72 ; 1-11
30.12.2014
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Online Contents | 2015
| British Library Online Contents | 2015
Examining the seismic behaviour of partially saturated sand using centrifuge shaking table tests
| DOAJ | 2019