Embankment Design Method Combining Limit-State Approach with Stress-Path Application

Öser, Cihan; Cinicioglu, S. Feyza

doi:10.1061/(asce)gm.1943-5622.0000796

Cited by 3 publications

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“…This conclusion is also supported by Ohlmacher [16], where the soil comprising mineral content such as illite has a high liquid limit contributing to very low strength parameters. Instability problems such as lateral deformations and excessive settlement often occur in structural and geotechnical construction on soft soils [17]. The load generated by the embankment fill drives the increase in soil stress and pore water pressure leading to deformation mechanisms.…”

Section: The Challenge Of Constructing Embankments On Soft Groundmentioning

confidence: 99%

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: The Challenge Of Constructing Embankments On Soft Groundmentioning

confidence: 99%

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

Mamat

Kasa

Razali

2019

IIUMEJ

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Section: Introductionunclassified

“…Ayrıca da mühendislik prensiplerine uygun olarak tasarlanan dolgularda dolgu içi stabilitenin gerek boyutlandırma gerekse de geosentetik ve benzeri uygulamalarla sağlanması mümkündür ve neredeyse standart uygulama durumundadır. Bu sebeplerle yumuşak zeminlerin temel zemini tabakalanmasında yer aldığı durumlar özenle araştırılmalı ve tasarımda dolgu yüklemesinden etkilenen bütün zemin ortamı göz önünde bulundurulmalıdır [4,5]. Dolgu yapılarında göçme davranışının incelenmesi amacı ile günümüze kadar yapılmış olan teorik ve sayısal modellemelerde saha çalışmalarında ve prototip kesitler üzerinde yapılan laboratuvar araştırmalarının tamamında yüzeysel temellerin göçme davranışlarından yola çıkılarak tasarımlar gerçekleştirilmiştir.…”

Section: Introductionunclassified

Yumuşak Zeminler Üzerinde Dolgu İnşasında Temel Zemini Göçmesine Dayalı Tasarım Yaklaşımı

Arama

Cinicioglu

2019

Teknik Dergi

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ÖZYumuşak zeminlerin tipik özelliği düşük kayma mukavemetleri ve yüksek sıkışma yetenekleridir. Bu sebeple yumuşak zeminlere büyük yükler aktarmak zordur ve kolaylıkla göçme oluşabilir, bu durum özellikle dolgu inşaatlarında sorun yaratır. Bu çalışmada, söz konusu zorluğu bertaraf etme anlayışından ve özellikle de deniz dibi zeminler üzerine inşa edilen dolgularda ilk yükleme kademelerinde kontrollü bir göçmeye izin verilebilmesi yaklaşımından hareket ederek özgün bir dolgu tasarım yöntemi geliştirilmiştir. Yöntemin uygulanmasında limit denge hesaplarıyla yüksekliği belirli bir dolgunun yükleri altında çeşitli derinliklerdeki güvenlik seviyesi taranmakta ve göçme davranışı gösteren bölge tanımlanabilmektedir. Yöntem, farklı durumlar için uygulanmış ve sonuçlar sonlu elemanlar ve limit denge yöntemlerine dayanan iki ayrı ticari yazılımın sonuçlarıyla karşılaştırılmıştır.Anahtar Kelimeler: Limit denge, limit analiz, yumuşak zeminler, güvenlik sayısı, dolgu. ABSTRACT An Approach of Embankment Design Based on Foundation FailureIn order to tackle the difficulties encountered in embankment design and construction, a new design method for embankments on soft clays is proposed in this paper. The method approaches to the problem with the philosophy of allowing controllable failures at small depths. Foundation soils are scanned through by applying a limit equilibrium approach specifically developed for the embankment problem and considering different slip planes at various depths. The purpose is to find the depth and the location of the failure region which gives a safety factor value of unity and also values of the safety factors which were mobilized at different depths under an embankment of considered height.

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Design method for quantifying embankment safety against lateral spreading and determining contribution of basal reinforcements

Öser

Cinicioglu

Çinicioğlu

2020

Geotextiles and Geomembranes

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Embankment Design Method Combining Limit-State Approach with Stress-Path Application

Cited by 3 publications

References 8 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

Yumuşak Zeminler Üzerinde Dolgu İnşasında Temel Zemini Göçmesine Dayalı Tasarım Yaklaşımı

Design method for quantifying embankment safety against lateral spreading and determining contribution of basal reinforcements

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