Long-term reinforcement strains for column supported embankments with viscous reinforcement by FEM

Liu, K.-W.; Rowe, R. Kerry; Su, Qian; Bao, Lei; Zhang, Yang

doi:10.1016/j.geotexmem.2017.04.003

Cited by 23 publications

(3 citation statements)

References 53 publications

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“…In order to minimize the boundary effects, the lateral boundary of the finite element mesh was extended at least 35 m longitudinally either side of the bridge approach to make the total length of the model 95 m (i.e. over three times of the width (23 m) of bridge approach and abutment) (Liu et al, 2017; Rowe and Liu, 2015). The lateral boundaries were modeled as being smooth, rigid, and impermeable.…”

Section: Problem Descriptionmentioning

confidence: 99%

Assessment of the use of fiberglass-reinforced foam concrete in high-speed railway bridge approach involving foundation cost comparison

Liu

Fei

et al. 2019

Advances in Structural Engineering

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In view of the limited use of foam concrete for backfilling high-speed railway bridge approach and no publication considering the associated foundation treatment cost, this article presents a series of laboratory tests to study the mechanical properties of fiberglass-reinforced foam concrete with different contents of fiberglass, whereby the optimal values of target density and fiberglass content for fiberglass-reinforced foam concrete are obtained. A numerical model is developed to investigate the performance of bridge approach filled with fiberglass-reinforced foam concrete under different levels of foundation treatment in comparison with the control group with traditional backfills (combination of graded crushed stone and cement). Results indicate that the application of fiberglass-reinforced foam concrete to fill high-speed railway bridge approach can significantly improve the bridge approach performance (decreasing the horizontal displacement and ground surface settlement, respectively, by 58% and 21% than the control group) and cut down the foundation treatment cost by 19% concurrently.

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Section: Problem Descriptionmentioning

confidence: 99%

Assessment of the use of fiberglass-reinforced foam concrete in high-speed railway bridge approach involving foundation cost comparison

Liu

Fei

et al. 2019

Advances in Structural Engineering

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“…Some other geosynthetic features, such as creep and damage during installation, are usually considered through reduction factors. Recent numerical analyses [ 99 ] model numerically the creep behavior of geosynthetics.…”

Section: Modeling the Geosynthetic Encasementmentioning

confidence: 99%

Modeling Stone Columns

Castro

2017

Materials

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This paper reviews the main modeling techniques for stone columns, both ordinary stone columns and geosynthetic-encased stone columns. The paper tries to encompass the more recent advances and recommendations in the topic. Regarding the geometrical model, the main options are the “unit cell”, longitudinal gravel trenches in plane strain conditions, cylindrical rings of gravel in axial symmetry conditions, equivalent homogeneous soil with improved properties and three-dimensional models, either a full three-dimensional model or just a three-dimensional row or slice of columns. Some guidelines for obtaining these simplified geometrical models are provided and the particular case of groups of columns under footings is also analyzed. For the latter case, there is a column critical length that is around twice the footing width for non-encased columns in a homogeneous soft soil. In the literature, the column critical length is sometimes given as a function of the column length, which leads to some disparities in its value. Here it is shown that the column critical length mainly depends on the footing dimensions. Some other features related with column modeling are also briefly presented, such as the influence of column installation. Finally, some guidance and recommendations are provided on parameter selection for the study of stone columns.

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“…This issue has attracted the attention of many engineers and researchers, and a handful of studies have been conducted to evaluate the geosynthetic-reinforced and semi-rigid column-supported embankments. These vary from laboratory tests (Chen et al, 2008a;Van Eekelen et al, 2012a, 2012bXu et al, 2016;Debnath and Dey, 2017;Esmaeili et al, 2017;Mehdizadeh et al, 2018) to full-scale experiments (Chen et al, 2010;Liu et al, 2012;Hong et al, 2014;Weng et al, 2014;Liu et al, 2015;Rowe and Liu, 2015;Van Eekelen et al, 2015;Cao et al, 2016;Van Eekelen et al, 2017;Michalowski et al, 2018;Tano et al, 2018;Wang et al, 2018aWang et al, , 2018c and from analytical models (Balaam and Booker, 1981;Deb, 2010;Karim et al, 2011;Van Eekelen et al, 2011Zhou et al, 2012;Yang et al, 2013;Zhuang et al, 2014;Jamsawang et al, 2016;Van Eekelen, 2016;Feng et al, 2017b;Zhao et al, 2017) to numerical simulations (Huang and Han, 2009;Jiang et al, 2014;Kamash and Han, 2014;Lai et al, 2014;Yoo, 2015;Zhuang and Wang, 2015;Liu et al, 2017;…”

Section: Introductionmentioning

confidence: 99%

A closed-form solution for column-supported embankments with geosynthetic reinforcement

Zhao

Zhou

Geng

et al. 2019

Geotextiles and Geomembranes

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Long-term reinforcement strains for column supported embankments with viscous reinforcement by FEM

Cited by 23 publications

References 53 publications

Assessment of the use of fiberglass-reinforced foam concrete in high-speed railway bridge approach involving foundation cost comparison

Assessment of the use of fiberglass-reinforced foam concrete in high-speed railway bridge approach involving foundation cost comparison

Modeling Stone Columns

A closed-form solution for column-supported embankments with geosynthetic reinforcement

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