Sami Arsoy

Kocaeli University · Department of Civil Engineering

In an earthquake prone region, the design of any civil engineering structure must consider the potential detrimental effects arising from possible earthquakes near the vicinity of the structure. For most structures, a civil engineer needs to know or define the level of ground shaking while maintaining a desired level of performance for the structur...

Big civil structures and transportation infrastructure are very important facilities for a country. Without them, a modern city would cease to exist. In most cases, the foundations of these civil structures are supported by piles and/or alike. These piles need to be evaluated as part of the condition and risk assessment work after a major earthquak...

Seismic liquefaction is a type of soil damage that is common in Turkey after an earthquake. Therefore, determination of liquefaction potential is an obligation for the construction fields in earthquake zones. CSR is a commonly used method for liquefaction analysis with rapid results and ease of use. The method is based on the comparison of the cycl...

Because of its location, Turkey is faced with structural and geotechnical damages due to seismic load. Soil liquefaction is a type of geotechnical damage, continued to be studied and frequently observed in seismic zones. Seismic loading causes loss of strength in soil in case the pore water cannot be drained immediately. Therefore, each parameter t...

ABSTRACT: Helical piles are made of steel, and have at least one helical plate. They can be installed rapidly by applying axial load and torque to the pile shaft. There are several methods used to determine the axial pile capacity of helical piles. One of the methods commonly used in applications is the torque correlation method. With this method,...

ÖZET: Yapı kaynaklı gerilme artışlarının zemin sıvılaşması analizlerinde nasıl dikkate alınacağı, üzerinde çalışmaların devam ettiği bir konudur. Zemin ile üzerinde yer alan yapının farklı rijitliklerde olması başta olmak üzere, statik ve dinamik yükleme koşullarında zemin derinliği boyunca efektif gerilmelerde ve yapı-zemin ara yüzeyindeki gerilme...

ABSTRACT: Shear stresses during liquefaction analysis are first calculated for rigid conditions and subsequently corrected by a stress reduction factor (rd) in order to account for the deformations in the soil due to seismic shaking. Structure induced stresses can also cause a change in the soil rigidity and hence on the rd factor. In this study, t...

The Calcium Carbide Gas Pressure (CCGP) method is a rapid measurement procedure for obtaining Soil Water Content (SWC), which relies on the chemical reaction of the calcium carbide reagent with water in soil pores. Currently, the method is limited to soil samples of 20 g or larger. However, test equipment for much smaller sample sizes does exist, a...

Designing piles against lateral loads is a speciality task, requiring comprehensive analysis. However, for a preliminary design or for small jobs, simple methods can be employed. A literature review yielded two simple methods: the khmax method and the Characteristic Load Method - CLM. The aim of this study is to compare the load deflection behavior...

Designing piles against lateral loads is a speciality task, requiring comprehensive analysis. However, for a preliminary design or for small jobs, simple methods can be employed. A literature review yielded two simple methods: the khmax method and the Characteristic Load Method - CLM. The aim of this study is to compare the load deflection behavior...

Soil moisture or soil water content (SWC) is an important variable and its determination with an acceptable accuracy is an essential need for a variety of hydrological disciplines. Among the alternatives, permittivity based probes are gaining popularity and becoming established techniques. However, probes are affected by local soil conditions, requ...

Soil moisture is a key engineering variable with major influence on ecological and hydrological processes as well as in climate, weather, agricultural, civil and geotechnical applications. Methods for quantification of the soil moisture are classified into three main groups: (i) measurement with remote sensing, (ii) estimation via (soil water balan...

Time Domain Reflectometry (TDR) has become an established and reliable electromagnetic method for quantification of the soil water content (SWC). The existing calibration models used to convert the dielectric permittivity to SWC cannot be assumed to be universal, mainly due to the fact that the dielectric permittivity of the soils depends upon vari...

Measurement of the moisture content of inorganic soils is frequently needed for many engineering activities. The standard test method by ASTM D2216 is very accurate, but the associated drying time up to 24 h is not always desirable. This study investigates the usability of infrared (IR) drying of inorganic soils in reducing the drying time under co...

A change in temperature causes a material to change length. Like most structures, bridges are subject to daily and seasonal thermal displacement cycles due to varying temperatures. In conventional bridges, expansion joints and seatings are used to accommodate these displacements. In integral bridges, the expansion Joints are eliminated, and this re...

Bridges are subject to daily and seasonal thermal displacement cycles. In conventional bridges, expansion joints are used to accommodate these displacements. However, in integral bridges, the expansion joints are eliminated, and the superstructure, along with the bridge abutments, undergoes displacements during each temperature cycle. A practical a...

Bridges are subject to daily and seasonal thermal displacement cycles. In conventional bridges, expansion joints are used to accommodate these displacements. However, in integral bridges, the expansion joints are eliminated, and the superstructure, along with the bridge abutments, undergoes displacements during each temperature cycle. A practical a...

This paper presents the results of an experimental study of semiintegral bridge abutments. Primary interests were to investigate (1) potential problems with the particular detail tested; (2) rotational characteristics of the semiintegral abutments; and (3) ability of the specimens to withstand cyclic loading induced by temperature variations during...

Bridges without expansion joints are referred to as integral bridges. The abutment and the superstructure of integral bridges act as a single structural unit As the temperature of an integral bridge changes, the length of the bridge increases and decreases. The changes push the abutment against the approach fill and pull it away and thus cause late...

As the temperature of an integral bridge changes, the length of the bridge increases and decreases, so that the abutments are pushed against the approach fill and then pulled away, causing lateral deflections at the tops of the piles that support the bridge. As a result, complex interactions take place among the abutment, the approach fill, the fou...

This research investigated, through experimental and analytical studies, the complex interactions that take place between the structural components of an integral bridge and the adjoining soil. The ability of piles and abutments to withstand thermally induced cyclic loads was investigated by conducting large-scale cyclic load tests. Three pile type...

Cyclic lateral load tests simulating 75 years of bridge life were performed on an H-pile, a pipe pile, and a prestressed reinforced concrete pile by applying over 27,000 displacement cycles. The data from the tests indicate that steel H-piles loaded on the weak axis are the best pile type for support of integral abutment bridges. Concrete piles are...

This report presents findings of a literature review, a field trip, and a finite element analysis pertaining to integral bridges. The purpose of the report is to identify problems' and uncertainties, and to gain insight into the interactions between the foundation piles, the integral abutment, and the surrounding ground. The field trip included vis...

Bridges without expansion joints are called "integral bridges." Eliminating joints from bridges crates concerns for the piles and the abutments of integral bridges because the abutments and the piles are subjected to temperature-induced cyclic lateral loads. As temperatures change daily and seasonally, the lengths of integral bridges increase and d...