This paper presents a machine learning model using random forest (RF) algorithm with the recursive feature elimination (RFE) for soil liquefaction prediction. The prediction is tested on 253 CPT-based field data from different earthquakes. RFE, which one of selection methods, was adopted eliminating irrelevant features in mentioned dataset, and then performance RFE-RF (i.e., determined by RFE m...

With the continuous development of traffic construction, road engineering inevitably crosses aeolian sand river valley area. Compared with general sandy soil and silty soil, cohesionless foundation has similar properties fluid higher liquefaction potential. Precast cement pile can greatly improve vertical bearing capacity foundation, but this paper finds that it also antiliquefaction effect whe...

A predictive framework for flow liquefaction instabilities in sands is presented. A general criterion for liquefaction, based purely on the laws of physics, is presented and adapted to the important case of radial loading (e.g. triaxial, simple shear) using the Cambridge p9–q plane. Three important contributions are made in the paper. First, the instability concept is unified, and it is shown t...

Centrifuge modelling is an effective tool to assess the response of reduced-scale structures subjected earthquakes under increased gravity. Space limitations, however, force model be contained within relatively small boxes, whose boundaries may affect seismic performance structure consideration. In this paper, influence proximity equivalent shear beam (ESB) container during dynamic centrifuge t...

Electrolytic desaturation is a potential method for improving the liquefaction resistance of liquefiable foundations by reducing soil saturation. In this study, in situ tests were performed to investigate resistivity at different depth and water level foundation under currents. The test results show that constant currents 1, 2, 3 A (ampere, unit direct current), saturation treated reached 87%, ...

Soil sites have a profound effect on ground motion during earthquakes due to their low wave speeds, layered structure, and nonlinear constitutive relationship. Measurements of nonlinear soil response under natural conditions are critical to understanding soil behavior during earthquakes. Currently, quantitative measurements of nonlinear soil response are derived from laboratory experiments on s...

The Liquefaction Experiments and Analysis Project (LEAP) is an international collaboration between universities in the US, Japan, UK, Taiwan and China to evaluate the capabilities of constitutive models for liquefaction problems. In developing this international collaboration, a key step is to develop and define the verification and validation procedure that will be used in this study. This pap...

The potential for basin amplification of ground motion from significant seismic sources 100-200 km (62-124 mi.) from the Las Vegas Valley (such as the Death Valley Fault System) and Quaternary faults in the valley could provide sufficient energy to cause liquefaction. Key criteria of liquefiable soils coupled with a shallow groundwater table (less than 15 m (50 ft)) are met at several sites in ...

A series of centrifuge liquefaction tests have been conducted at C-CORE’s geotechnical centrifuge facility: two on variable soil and one on uniform soil deposits. A single storied frame structure resting on two strip footings was also placed on that soil deposit. Experimental results such as accelerations, excess pore water pressures (EPWP) and settlements were monitored throughout the tests. R...