Centrifuge modeling of seismic liquefaction effects on adjacent shallow foundations

Marques, Asps; Coelho, Palf; Haigh, SK; Madabhushi, Gopal

doi:10.1201/b16200-147

Cited by 6 publications

(7 citation statements)

References 4 publications

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“…Furthermore, the recent use of Hostun sand on centrifuge modelling (e.g. Marques et al 2014;Li and Bolton 2014;Chian et al 2014) highlighted the need for high quality testing to be performed on this material. (Table 1), with the small differences between them resulting from the application of different standards.…”

Section: Laboratory Testing Programme Tested Materialsmentioning

confidence: 99%

Critical State–Based Interpretation of the Monotonic Behavior of Hostun Sand

Azeiteiro

Coelho

Taborda

et al. 2017

J. Geotech. Geoenviron. Eng.

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A series of bender element tests and drained and undrained monotonic triaxial compression and extension tests were performed on air-pluviated samples of Hostun sand. Samples were prepared to different initial void ratios, consolidated under various isotropic and anisotropic stress states and sheared using different stress-paths and a wide range of deformations to characterise the sand's stress-strain response. The results suggest that the sand's small-strain behaviour essentially depends on the current void ratio and mean effective stress. Within the medium to large strain range, a state parameter approach in conjunction with the critical state framework can successfully predict the distinctive states of the sand's monotonic response, namely the phase transformation, the peak stress ratio and the critical states. Furthermore, the data is used to examine a stress-dilatancy relationship often incorporated in constitutive models. The characterisation presented herein aims at assisting the efficient calibration of numerical models and provides insight into this sand's behaviour, thus supporting the interpretation of results of physical modelling involving this sand. This paper highlights the importance of characterising sand's behaviour over the full strain range and shows that accurate predictions of the critical state and small-strain stiffness are crucial to assess other aspects of the sand's behaviour.

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Section: Laboratory Testing Programme Tested Materialsmentioning

confidence: 99%

Critical State–Based Interpretation of the Monotonic Behavior of Hostun Sand

Azeiteiro

Coelho

Taborda

et al. 2017

J. Geotech. Geoenviron. Eng.

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“…The primary goal of this study was to meticulously validate observed patterns in real-world data concerning the impact of shallow foundations on liquefaction-induced phenomena within susceptible soil deposits. To achieve this, the investigation drew insights from insightful centrifuge experiments conducted by Marques et al (2012). These pioneering tests delved into the intricate behaviour of shallow foundations on substrates encompassing both liquefiable and non-liquefiable (densified) rock layers.…”

Section: Validation Of the Simulation Analysismentioning

confidence: 99%

“…In-situ tests include the Standard Penetration Test (SPT), seismic reflection test, and other seismic tests. Model test experiments involve shaking tables and centrifuge tests (Marques et al, 2012). Additionally, several software programs are now available to predict soil behaviour during earthquakes efficiently, facilitated by advancements in computer technology (Mehrzad et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Effect of Liquefaction on shallow foundations during 2001 Bhuj earthquake at Kutch (Gujarat), India

Amin,

Singh

2023

Preprint

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Liquefaction, the temporary loss of strength in saturated sand causing it to behave like a liquid, leads to devastating consequences, including the settling, tilting, or collapsing of structures built on loose, saturated soil. The 2001 Bhuj earthquake witnessed extensive liquefaction in regions such as the Great Rann of Kutch, Banni Plains, Kandla, and Gulf of Kutch, resulting in substantial damage to various infrastructures, including bridges, docks, buildings, embankments, and dams. This study employs a finite element approach to analyse the behaviour of shallow foundations on liquefying subsoil in Kutch during the 2021 earthquake. The investigation focuses on ring footings with inner radii of 0.25 m, 0.5 m, and 0.75 m, as well as an outer radius of 1 m, alongside a circular foundation with a 1 m radius. Notably, the ring footing with a radius ratio of 0.5 exhibits the least settlement under static loads, underscoring that liquefaction-induced settlement for ring footings is significantly less than that for circular footings.

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“…MEMS accelerometers are now key instruments in almost all centrifuge modelling for measurement of both horizontal and vertical displacement e.g. [212][213][214][215]. However, there are some points regarding MEMS sensors that need to be considered in the centrifuge experiment design.…”

Section: Geotechnical Centrifuge Modellingmentioning

confidence: 99%

MEMS technology and applications in geotechnical monitoring: a review

Barzegar

Blanks²,

Sainsbury

et al. 2022

Meas. Sci. Technol.

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In-situ monitoring is an important aspect of geotechnical projects to ensure safety and optimise design measures. However, existing conventional monitoring instruments are limited in their accuracy, durability, complex and high cost of installation and requirement for ongoing real time measurement. Advancements in sensing technology in recent years have created a unique prospect for geotechnical monitoring to overcome some of those limitations. For this reason, micro-electro-mechanical system (MEMS) technology has gained popularity for geotechnical monitoring. MEMS devices combine both mechanical and electrical components to convert environment system stimuli to electrical signals. MEMS-based sensors provide advantages to traditional sensors in that they are millimetre to micron sized and sufficiently inexpensive to be ubiquitously distributed within an environment or structure. This ensures that the monitoring of the in-situ system goes beyond discrete point data but provides an accurate assessment of the entire structures response. The capability to operate with wireless technology makes MEMS microsensors even more desirable in geotechnical monitoring where dynamic changes in heterogeneous materials at great depth and over large areas are expected. Many of these locations are remote or hazardous to access directly and are thus a target for MEMS development. This paper provides a review of current applications of existing MEMS technology to the field/s of geotechnical engineering and provides a path forward for the expansion of this research and commercialisation of products.

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Centrifuge modeling of seismic liquefaction effects on adjacent shallow foundations

Cited by 6 publications

References 4 publications

Critical State–Based Interpretation of the Monotonic Behavior of Hostun Sand

Critical State–Based Interpretation of the Monotonic Behavior of Hostun Sand

Effect of Liquefaction on shallow foundations during 2001 Bhuj earthquake at Kutch (Gujarat), India

MEMS technology and applications in geotechnical monitoring: a review

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