Simulating the water content and temperature changes in an experimental embankment using meteorological data

Abstract

Abstract： ： ： ：An experimental embankment was constructed in Rouen, France. The construction was completed in December 2004. The first objective of this experiment is to investigate the influence of climatic changes on the soil response such as changes in water content and temperature as well as the induced vertical and horizontal displacements; and the second objective is to investigate the soil response under water flooding from the base of embankment. In this study, the changes in temperature, volumetric water content and suction along the central axis have been analysed using a one-dimensional model and based on the meteorological data obtained in the field.Comparisons made between the measurements and simulations have shown the relevance of the method adopted, provided that suitable boundary conditions and soil parameters are taken into consideration. Moreover, both the simulation and field monitoring showed that climatic effects are limited to a shallow depth, which results from the low permeability of the compacted fill.

Unsaturated Soils: Research and Applications

“…Several studies Rafaela Cardoso ICIST and Instituto Superior Técnico, TULisbon, Lisbon, Portugal e-mail: rafaela@civil.ist.utl.pt Vasco Fernandes · Tiago Moço Ferreira Instituto Superior Técnico, TULisbon, Lisbon, Portugal Paulo Fonseca Teixeira CESUR and Instituto Superior Técnico, TULisbon, Lisbon, Portugal e-mail: pft@civil.ist.utl.pt (Somethurst et al, 2006 andCui et al, 2010) show that seasonal variations in the water content may occurs up to significant depths and corresponds to alternate wetting and drying.…”

Studying the effect of drying on soil hydro-mechanical properties using micro-penetration method

“…One is to estimate these parameters indirectly based on modeling the soil-atmosphere interaction using meteorological data. A lot of numerical models on this issue have been proposed in the past decades (Corti et al 2011;Cui et al 2005Cui et al , 2010Cui et al , 2013Hemmati et al 2012;Rajeev et al 2012;Wilson et al 1997). In order to accurately predict the changes in water content and suction due to drought effects in soil profile, it is necessary to well define the boundary conditions (i.e., water flow and heat flow) required for estimating the rate of surface evaporation.…”

Modellierung des Wasserhaushalts von Straßenböschungen in Lysimetern

“…Zum Wasserhaushalt von Straßendämmen lagen bis dato nur vergleichsweise wenige Ergebnisse experimenteller Untersuchungen vor. Diese beschäftigten sich in erster Linie mit der Entwicklung von Wassergehalten in Straßendämmen ohne die Sickerwassermengen zu erfassen und zu quantifizieren . Zur gezielten Analyse des Wasserhaushalts von Straßenböschungen wurden deshalb bei der Bundesanstalt für Straßenwesen (BASt) Lysimeteruntersuchungen an Ausschnitten von Straßendämmen durchgeführt.…”