Failure and Remedy of Column-Supported Embankment: Case Study

Michałowski, Radosław L.; Wojtasik, Andrzej; Duda, Adam; Florkiewicz, Antoni; Park, Dowon

doi:10.1061/(asce)gt.1943-5606.0001839

Cited by 20 publications

(6 citation statements)

References 17 publications

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“…Thirty-two truckloads of EPS blocks were used in this project. Michalowski https://doi.org/10.31436/iiumej.v20i2.996 et al [157] investigated the road embankment performance which is partially stabilized using the pile-supported method, that is controlled modulus columns of 400 mm in diameter and installed with square grid space of between 1.4 m to 2.0 m from one another and were installed in ground by up to 22.8 m deep [148]. The bulk of the embankment fill used the EPS29 block and mounted on a 9.5 m thick organic clay foundation.…”

Section: Geofoam As Lightweight Fill Materialsmentioning

confidence: 99%

“…EPS with high hardness or elastic modulus is useful for large loads. Many researchers believe that using this method can reduce costs [76,153,157], but Kim et al [160] argued that the use of EPS blocks requires a high cost in terms of installation and construction operations in road construction projects compared to plastic board drains and PVD. This is because even with the reduction in the quantity of soil used for the embankment, it still requires additional soil due to the same longitudinal grade as the original design.…”

Section: Geofoam As Lightweight Fill Materialsmentioning

confidence: 99%

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A Review of Road Embankment Stability on Soft Ground: Problems and Future Perspective

Mamat

Kasa

Razali

2019

IIUMEJ

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This paper presents an exhaustive review of the challenges faced in the construction of road embankments on soft ground and proposes a direction for future development. Frequently used techniques for soft ground improvement are discussed. The factors that contribute to the stability of the road embankment are reviewed by approach, results of past studies, and historical cases. The findings show that settlement, slope stability, and soil bearing capacity are all challenges to constructing the road embankment. Additionally, it is found that geometric data is a key factor in embankment design. Pre-loading with prefabricated vertical drain (PVDs) methods and lightweight fill were found to be widely used techniques in soft ground improvement. The information from this study can be used to develop design guidance systems, numerical modelling, and to give an overview and knowledge to other researchers who are or will conduct research in this field. Finally, future perspectives for research are related to predictions of factors that affect the stability of road embankment with an artificial intelligence approach. ABSTRAK: Kertas ini membentangkan ulasan kajian menyeluruh mengenai cabaran yang dihadapi dalam pembinaan benteng jalanraya di atas tanah lembut dan mencadangkan ke arah pembangunan kajian masa depan. Teknik-teknik penambahbaikan tanah lembut yang sering digunakan turut dibincangkan. Faktor- faktor yang menyumbang kepada kestabilan benteng jalanraya diulas dengan pendekatan kepada kajian lepas dan sejarah kes. Hasil kajian ini didapati bahawa enapan, kestabilan cerun dan keupayaan galas tanah merupakan cabaran dalam pembinaan benteng jalanraya. Selain itu, ia didapati bahawa data geometri merupakan faktor penting kepada rekabentuk benteng. Kaedah pra pembebanan dengan prefabrikasi saliran menegak (PVDs) dan isian ringan didapati teknik yang popular digunakan dalam pembaikkan tanah lembut masa kini. Maklumat dari kajian ini boleh digunakan untuk membangunkan sistem panduan reka bentuk, pemodelan berangka serta memberi gambaran dan ilmu kepada penyelidik lain yang sedang atau akan menjalankan kajian dalam bidang ini. Akhir sekali, perspektif masa depan untuk penyelidikan berkaitan ramalan faktor-faktor yang mempengaruhi kestabilan embankment jalanraya dengan pendekatan kepintaran buatan.

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Section: Geofoam As Lightweight Fill Materialsmentioning

confidence: 99%

Section: Geofoam As Lightweight Fill Materialsmentioning

confidence: 99%

A Review of Road Embankment Stability on Soft Ground: Problems and Future Perspective

Mamat

Kasa

Razali

2019

IIUMEJ

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“…At present, scholars mainly studied from theoretical analysis, numerical simulation, model test, field observation and other means, which have made great achievements in the site parameters and ground motion characteristics of slope. The existing theoretical analysis methods for slope ground motion are mainly represented by limit analysis method (Michalowski, 2009;Michalowski et al, 2018), discontinuous deformation analysis (Beyabanaki et al, 2016;Yu et al, 2019) and pseudo-static method, calculate the safety factor of slope, critical state of rupture and influencing factors of homogeneous soil; and numerical simulation method are represented by finite difference (Liu et al, 2004), finite element (Yin et al, 2019), discrete element (Valentino et al, 2008), etc. The result is superior to the calculation of the dynamic state of the slope and the related influencing factors (Assimaki et al, 2005;Paolucci, 2002;Pagliaroli et al, 2014).…”

Section: Introduction 31mentioning

confidence: 99%

Study on Damage Evolution Mechanism of Rock-Soil Mass of Accumulation Slope Based on Shaking Table Test

Yang

Tong

Zhang

et al. 2021

Preprint

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To investigate the seismic dynamic characteristics of the accumulation slope, a slope of the Zheduo Mountain tunnel along the Sichuan-Tibet Railway in China was selected as the prototype, based on dimensional analysis and similarity principle, two groups of model tests were carried out at 50° accumulation slope and 60° accumulation slope to obtain the dynamic response influenced by different amplitude of seismic wave. A transfer function analysis method suitable for shaking table test is proposed. Based on the data pretreatment method of eliminating trend terms and digital filter, the frequency response function was calculated by method of average periodic chart. And the variation of frequency response function was analyzed by Pearson correlation coefficient. At last, the least square iteration method was used for modal analysis. It is found that the transfer function changes obviously when both the slopes are destroyed, the weak interlayer has a significant influence on seismic wave transmission. The modal analysis results show that with the increase of the excitation intensity, the natural frequency decreases and the damping ratio increases.

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“…With the increase in soft foundation treatment depth, embankment height, and postconstruction settlement requirement, rigid columns (e.g., prestressed pipe pile, cement fly-ash gravel pile, and concrete pile) have been widely used to strengthen the soft foundation and form a composite foundation to support the embankment because of its fast construction speed and reliable settlement control effect [1][2][3]. Most rigid-pile composite foundation supports embankment successfully; however, accidents, such as collapse, cracking, and excessive settlement of embankments, occur in some areas [4][5][6][7][8][9]. e limit equilibrium method is generally adopted in the current specifications of China for the stability analysis of embankment supported on the rigid-pile composite foundation [10,11].…”

Section: Introductionmentioning

confidence: 99%

Failure and Remediation of an Embankment on Rigid Column‐Improved Soft Soil: Case Study

Liu

2020

Advances in Civil Engineering

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The south extension line was constructed as a new part of the Xintai Expressway in Guangdong Province, China. The project required the construction of an embankment over soft soil with a thickness of up to approximately 14.0 m, and prestressed pipe pile was selected for reinforcing the soft soil foundation to increase bearing capacity and reduce settlement. Embankment sliding with a length of approximately 110 m and cracking with a length that exceeded 300 m occurred before the construction of the pavement structure. Field investigation and theoretical analysis results indicate that the safety factor of the overall stability calculated by the existing code methods is overly large, thereby resulting in large design pile spacing, low design bearing capacity provided by single pile, and excessive load shared by subsoil between piles. These results all cause the flow sliding of soft soil between the piles and the bending fracture of some piles. The revised density method can be used to check the stability of flow sliding, and the bending moment of piles should also be checked during the embankment design stage. In addition, perpendicularity deviation and poor joint quality of pile construction also contributed to the reduction of the bearing capacity of the pipe piles and the overall stability of embankment. Reconstruction of additional rigid piles and add pile after drilling holes are adopted in the sliding and cracking sections to reinforce the failed embankment, respectively. The remediation effect was validated by the measured excess pore water pressure, subgrade settlement, and horizontal displacement.

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Failure and Remedy of Column-Supported Embankment: Case Study

Cited by 20 publications

References 17 publications

A Review of Road Embankment Stability on Soft Ground: Problems and Future Perspective

A Review of Road Embankment Stability on Soft Ground: Problems and Future Perspective

Study on Damage Evolution Mechanism of Rock-Soil Mass of Accumulation Slope Based on Shaking Table Test

Failure and Remediation of an Embankment on Rigid Column‐Improved Soft Soil: Case Study

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