Niyazi Ugur Terzi

Aksaray Üniversitesi · Department of Civil Engineering

Every year, millions of waste tires are discarded across the world. Storage of waste tires presents many problems such as fire threats, epidemics, and non-economic factors. Furthermore, the disintegration process of waste tires is not economical or practical due to its time-consuming, and disposal requirements. In this study, half-section waste tir...

Granular columns derive their load capacity from the confinement offered by the surrounding soil. However, lateral support can be problematic in extremely soft soil. Granular columns, when embedded in very soft clay, may bulge because of a lack of confinement offered by the surrounding soil. To avoid these problems, additional confinement can be pr...

Granular columns derive their load capacity from the confinement offered by the surrounding soil. However, lateral support can be problematic in extremely soft soil. Granular columns, when embedded in very soft clay, may bulge because of a lack of confinement offered by the surrounding soil. To avoid these problems, additional confinement can be pr...

Desiccation can be heavily detrimental and can adversely influence the performance of clayey soils in various engineering applications such as compacted clay barriers in waste containments, dam cores, canal liners, and road pavements. Cracks may affect the compressibility of soil, its rate of consolidation, its strength and the permeability rate, a...

Bu çalışmada, statik yada yarı statik yükleme deneylerinde yapı elemanlarının deformasyon davranışlarını gerçek zamana yakın (<1 sn) belirleyebilmek için geliştirilen fotogrametrik bir sistem anlatılmıştır. Sistem yazılım ve donanım olmak üzere iki bileşenden oluşmaktadır. Donanım bileşeni 3 video kameralı görüntü elde etme sistemini, yazılım bileş...

Desiccation can be heavily detrimental and can adversely influence the performance of clayey soils in various engineering applications such as compacted clay barriers in waste containments, dam cores, canal liners, and road pavements. Cracks may affect the compressibility of soil, its rate of consolidation, its strength and the permeability rate, a...

The most important construction material of a durable building having efficient service life is the foundation system. And, a durable foundation can be constructed on a solid ground. From this aspect, offering solutions for potential ground problems is one of the primary objectives of designers. There already are many ground rehabilitation methods...

Man-made or natural earth slopes are created or used for different construction activities. Earth slopes can result from activities such mine excavation and dredging for berthing structures. Typical examples of the creation and use of earth slopes are rail and road embankments, and river training bunds. Both types of slopes can be high and subject...

Millions of scrap tires are discarded annually in Turkey. The bulk of which are currently landfilled or stockpiled. These tires consume valuable landfill space or if improperly disposed, create a fire hazard and provide a prolific breeding ground for rats and mosquitoes. Used tires pose both a serious public and environmental health problem which m...

Water and energy supplies are the key factors affecting the economic development and environmental improvement of Turkey. Given their important role and the fact that a large part of Turkey is in seismically active zones dams should be accurately analyzed since failure could have a serious impact on the local population environment and on a wider l...

Millions of scrap tires are discarded annually in Turkey. The bulk of which are currently landfilled or stockpiled. These tires consume valuable landfill space or if improperly disposed, create a fire hazard and provide a prolific breeding ground for rats and mosquitoes. Used tires pose both a serious public and environmental health problem which m...

In this study, a series of laboratory tests on 100‐mm‐diameter high‐density polyethylene (HDPE) 100 PE flexible pipe buried in poorly graded Sile quartz sand with different relative densities are described. The laboratory tests were performed in a 40‐mm‐thick plexiglass fronted test tank that replicated a classical trench section in field condition...

The objective of this study is to evaluate the consolidation process and long-term deformation behavior of an embankment constructed on dredge material from the Halic (know as Golden Horn) in Istanbul. A comprehensive laboratory studies were performed on dredge material and with using the laboratory test results, finite element numerical method was...

Concrete faced rock-fill (CFR) dams are now very popular. The structural complexity of these dams and the high risk associated with the social and environmental consequences of failures require very reliable analyses of their performance, especially as regards seismic loading. In this paper, a dynamic analysis procedure for CFR dams is proposed and...

A field investigation involving performance and repeated loading tests on a grouted anchor based on the full-scale test results from a reinforced wall structure constructed in the stiff clay soil of Kozyatagi district in Istanbul was investigated. The total deflection of the anchored head was observed as 27 mm, which was approximately 0.025% of the...

In this study, the monitoring of the load–deflection behavior of buried flexible pipes by digital close range photogrammetry was described. Experimental investigations were performed in a test box made of steel, with a Plexiglas front wall. An online vision system with three CCD cameras was developed to measure automatically the deflections of pipe...

This article presents the mechanical behavior of high density polyethylene (HDPE). Samples were prepared by extracting extruded HDPE pipe. Cyclic and strain rate jump behavior of HDPE were studied under uniaxial tensile loading conditions. The strain jump tests indicated that mechanical behavior of HDPE has deformation memory. Further, it was found...

In this study, a comprehensive laboratory test on 100 mm diameter HDPE 100 polyethylene flexible pipe buried in quartz sand is described. The laboratory test was performed in a 40 mm thick plexiglass-fronted test tank which replicated a classical trench section in field conditions. The polyethylene flexible pipe was positioned against the glass wit...

Isdemir (Iskenderun,Turkey) Harbour Modernization Project comprised several hundred 1140 mm diameter steel pipe piles driven offshore alongside west, north and east sections of an existing quaywall pier. The preliminary soil investigations indicated presence of a conglomerate layer at about −25.0 m b.s.l and the piles were planned to be point beari...

This article presents the mechanical behavior of high density polyethylene (HDPE). Samples were prepared by extracting extruded HDPE pipe. Cyclic and strain rate jump behavior of HDPE were studied under uniaxial tensile loading conditions. The strain jump tests indicated that mechanical behavior of HDPE has deformation memory. Further, it was found...

In this study, a series of laboratory tests on 100 mm diameter HDPE 100 PE flexible pipe buried in poorly graded Sile quartz sand with different relative densities are described. The laboratory tests were performed in a 40 mm thick plexiglass-fronted test tank which replicated a classical trench section in field conditions. The HDPE flexible pipe w...

In this study, a series of laboratory tests on 100-mm-diameter high-density polyethylene (HDPE) 100 PE flexible pipe buried in poorly graded Sile quartz sand with different relative densities are described. The laboratory tests were performed in a 40-mm-thick plexiglass fronted test tank that replicated a classical trench section in field condition...

Esnek boruların şekil değişimi ve zamana bağlı davranış biçimleri çelik ve betondan malzemelerden üretilen rijit borular ile kıyaslandığında bir çok yönden farklılıklar gösterir. Düşey yükler altındaki deformasyon davranışları; geri dolgu mazlemesi ve yerleştirme koşulları ile doğrudan ilişkilidir. Bu çalışmada 100 mm yarıçapındaki bir HDPE esnek b...

Soil nailing systems are more easily applied and less costly than many other lateral support methods. However a major problem in using nails is the lack of knowledge about soil-nail interaction and uncertainties in the behaviour of nailed systems as a whole under different conditions. The basic purpose of this research was to introduce the concept...

In this paper a comprehensive laboratory study was performed in order to evaluate a shredded tire-sand mixture as a backfill material in trench conditions. A steel frame test tank which replicated a classical trench section in field conditions was used in the laboratory studies. Vertical surcharge loads were applied using air pressure membranes fro...

ZET Bu çalışmada, farklı kum ortamlarında yerleştirilmiş olan bir kazık modelinin yanal yüklemeler altındaki gerilme-şekil değiştime ve yerdeğiştirme davranışı incelenmiştir. Labaratuvar ortamında yürütülen çalışmada, dairesel bir alüminyum kazık, deney kutusu, yükleme düzeneği, yer değişimi ve şekil değişimi ölçerler kullanılmıştır. Yağmurlama sis...

This paper describes the use of multimedia photogrammetry for determine of deflection behavior of buried flexible pipe 312 mm diameter is placed in highly strengthened steel box under load. 20 mm thick transparent Plexiglas was used in front face of the box. An on-line configuration of three CCD cameras was established to measure targets subject to...

In recent years there has been increasing use of flexible pipes in many areas such as natural energy transportation pipelines, water distribution or waste water drainage systems ect. However, much of the soil pipe behavior and pipe performance under various conditions has not been fully understood. In order to identify the complex soil-pipe interac...