Design of experimental setup for 1 g seismic load tests on anchored retaining walls

Carvalho, Áurea; Serra, J. Bilé; Oliveira, F.; Morais, P. Gil de; Ramos-Pereira, Ana

doi:10.1201/b10554-51

Physical Modelling in Geotechnics, Two Volume Set 2010

DOI: 10.1201/b10554-51

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Design of experimental setup for 1 g seismic load tests on anchored retaining walls

Áurea Carvalho¹,

J. Bilé Serra²,

F. Oliveira³

et al.

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2022

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Verification of a System for Sustainable Research on Earthquake-Induced Soil Liquefaction in 1-g Environments

et al. 2022

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Within the presented research, model tests were performed in 1-g conditions to investigate the liquefaction potential of Skopje sand as a representative soil from the Vardar River’s terraces in N. Macedonia. A series of shaking table tests were performed on a fully saturated, homogeneous model of Skopje sand in the newly designed and constructed laminar container in the Institute of Earthquake Engineering and Engineering Seismology (IZIIS), Skopje, N. Macedonia. The liquefaction depth in each shaking test was estimated based on the measured acceleration and pore water pressure as well as the frame movements of the laminar container. The surface settlement measurements indicated that the relative density increased by ~12% after each test. The observations from the tests confirmed that liquefaction was initiated along the depth at approximately the same time. The number of cycles required for liquefaction increased as the relative density increased. As the pore water pressure rose and reached the value of the effective stresses, the acceleration decreased, thus the period of the soil started to elongate. The results showed that the investigated Skopje sand was highly sensitive to void parameters and, under specific stress conditions, the liquefaction that occurred could be associated with large deformations. The presented experimental setup and soil material represent a well-proven example of a facility for continuous and sustainable research in earthquake geotechnical engineering.

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Verification of a System for Sustainable Research on Earthquake-Induced Soil Liquefaction in 1-g Environments

et al. 2022

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Design of a Biaxial Laminar Shear Box for 1g Shaking Table Tests

et al. 2022

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In this paper, the design of a new laminar shear box at the Laboratory of Earthquake Engineering and Dynamic Analysis (L.E.D.A.) of the University of Enna “Kore” (Sicily, Italy), is presented. The laminar box has been developed to investigate the liquefaction phenomenon and to validate advanced numerical models and/or the numerical approaches assessed to simulate and prevent related effects. The first part of the paper describes in detail the types of soil containers that have been used in the last three decades around the world. Particular attention is paid to laminar shear box and liquefaction studies. Moreover, the most important factors that affect the performance of a laminar shear box are reported. The last part of the paper describes components, properties, and design advantages of the new laminar shear box for 1g shaking table tests at L.E.D.A. The new laminar box has a rectangular cross section and consists of 16 layers. Each layer is composed of two frames: an inner frame and an outer frame. The inner frame has an internal dimension of 2570 mm by 2310 mm, while the outer frame has an internal dimension of 2700 mm by 2770 mm. Between the layers, there is a 20 mm gap, making the total height 1600 mm.

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Design of experimental setup for 1 g seismic load tests on anchored retaining walls

Cited by 2 publications

References 0 publications

Verification of a System for Sustainable Research on Earthquake-Induced Soil Liquefaction in 1-g Environments

Verification of a System for Sustainable Research on Earthquake-Induced Soil Liquefaction in 1-g Environments

Design of a Biaxial Laminar Shear Box for 1g Shaking Table Tests

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