Computational validation of static and dynamic plate load testing

Adam, Christoph; Adam, Dietmar; Kopf, Fritz; Paulmichl, Ivan

doi:10.1007/s11440-008-0081-0

Cited by 30 publications

(4 citation statements)

References 2 publications

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“…According to Van Genuchten method, curve-fitting parameters are estimated based on volumetric water content of soil. Therefore, the best point to estimate and evaluate the curve fitting parameters is the middle point between residuals and saturated water content, [33], [34].…”

Section: Methodsmentioning

confidence: 99%

Investigation of seepage effect on river dike’s stability under steady state and transient conditions

Kuriqi¹,

Ardıçlıoğlu²,

Muceku³

2016

Pollack Periodica

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World experiences reveal that catastrophic floods are posing a serious threat that comes not only from them as extreme events but also as the result of adaptation measures uncertainty, (i.e. dikes). In particularly old dikes constructed earliest at the north part of Albania, during the last floods demonstrated the high uncertainty and weak spots. In this paper, the significance of the seepage investigation and stability analysis are discussed. As a case study, parts of new dikes constructed last years along the Buna River located in north part of Albania are investigated. Filling materials for these dikes are represented mostly from silt and clay. Finite element method is used to perform seepage analysis while general limit equilibrium method is used to perform slope stability analysis. Both, seepage and slope stability analyses are done for three different scenarios: steady state, rapid filling, and rapid drawdown. Finally, it is concluded that silt-clay material used in these dike structure is posing serious uncertainty during seepage phenomenon by threatening the stability of entire dike structure especially during the transient condition (rapid filling and drawdown).

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Section: Methodsmentioning

confidence: 99%

Investigation of seepage effect on river dike’s stability under steady state and transient conditions

Kuriqi¹,

Ardıçlıoğlu²,

Muceku³

2016

Pollack Periodica

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“…Hildebrand (2003) in turn even suggested that LFWD should not be used on granular base courses. Later analyses of theoretical mathematical models and experiences of other researchers have even questioned the sense of looking for close relationships between the two testing methods, pointing out that the differences between them are too great (Adam et al 2009, Krawczyk and Mackiewicz 2016, Węgliński 2018). Among other things, the static test differs from the dynamic test in terms of the maximum extent of the loading effect.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Light Falling Weight Deflectometer for In Situ Measurement of Secondary Deformation Modulus of Various Forest Road Pavements

Grajewski

2023

Croat. j. for. eng. (Online)

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Roads in forests are necessary for proper forest management and active protection of the natural environment. They facilitate tourism and recreation and have a very important function in firefighting. The cost of building roads in forest areas is considerable, even when relatively cheap materials such as aggregates of natural or anthropogenic origin are used. Therefore, any road investment must be well prepared and executed. Bearing capacity and compaction are among the most important and frequently used geotechnical parameters in road construction. The aim of this study was to determine the possibility of predicting the value of the secondary deformation modulus E2 (obtained from measurements with a static plate load test – PLT) based on measurements with a light falling weight deflectometer (LFWD) Zorn, type ZFG 3000 GPS with a drop weight of 10 kg. The regression analysis included 245 results of bearing capacity measurements carried out on 46 forest road sections with various road pavements. Different regression models were tested: linear, logarithmic, polynomial, exponential and power models, excluding polynomials of fourth and higher degree. Prediction of E2 (PLT) values from dynamic deformation modulus Evd (LFWD) values is possible. However, the reported unsatisfactory strength of the relationship between the two parameters is associated with a high risk of error (r=0.73, R2=0.54, Se=80.37 MN·m-2). Neither the use of more complex non-linear regression models nor the use of multiple regression by introducing an additional estimator in the form of the s/v ratio significantly improved the estimation results. The quality of the prediction of E2 values is not constant. It varies depending on the type of forest road pavements, the use of geosynthetic pavement reinforcements and the type of road subgrade. The study also found that the quality of E2 prediction can be improved by limiting the range of tested Evd values upwards. It is advisable to continue this type of research, as the results obtained could be the basis for developing national standards for the application of LFWD to control the bearing capacity and compaction of forest road surfaces in the future.

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“…3). The deformation modulus E def,2 from the second loading stage in the load-displacement diagram was calculated with the following equation [23]:…”

Section: Methodsmentioning

confidence: 99%

The Effect of Soil Grain Size on the Deformation Properties of Reinforced Geocell Layers

2019

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The effect of backfill material grading on the behaviour of geocell reinforced layers was experimentally investigated in this study. A series of loading tests were performed on a model with geocell reinforced and unreinforced layers. Five types of crushed aggregates were used as backfill materials in the experiment. The results showed that geocell reinforcement increased the deformation parameters. The rate of increase of the deformation characteristics depended on the backfill material grading.

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Computational validation of static and dynamic plate load testing

Cited by 30 publications

References 2 publications

Investigation of seepage effect on river dike’s stability under steady state and transient conditions

Investigation of seepage effect on river dike’s stability under steady state and transient conditions

Evaluation of Light Falling Weight Deflectometer for In Situ Measurement of Secondary Deformation Modulus of Various Forest Road Pavements

The Effect of Soil Grain Size on the Deformation Properties of Reinforced Geocell Layers

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