Archive for Nisan 5th, 2009

Nis

5

Investigation of water conveyance systems of historical settlements in the north of aegean region from hydraulic and hydrological point of view

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Within the scope of this study, the water conveyance systems of the Aiolissettlements
are investigated. “Aiolis” is the name of the coastal-region between Ionia
and Troas on the western part of modern Turkish Republic. Aiolis is also bordered
with the Aegean-Sea on the west.
This study limited only with surface-investigations is conducted under the
approval and permission of the General [...]

Nis

5

Deniz suyundan elde edilen tuzun mukavemet özellikleri

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Salt, also known as Sodium Chloride, plays important roles on human life. First
reason for its importance is that, it is a source for Sodium and Chlorine elements,
which are two of the twelve dominant elements in human body. The other reason is
that, it is the main raw material of the chemical industry. Salt is produced by [...]

Nis

5

A study on the utilization of steel slag in concrete

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Steel slag is a by-product of the steel production. The scope of this thesis is to
investigate the effect of steel slags, using as replacement of Portland cement, on the
physical and mechanical properties of mortars and concretes. Four different types of steel
slags were used in this study, all of them were obtained from Basic Oxygen Furnace [...]

Nis

5

New design approaches to conventional method for block type quay walls

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In this study, new design approaches are introduced for the seismic design of
block type quay walls after reviewing the conventional methodologies. Within the
development of the new design approaches an inverse triangular dynamic
pressures distributions are applied to define both seismic earth pressures and
seismic surcharge pressures. Differently from the conventional design

Nis

5

Numerical analysis of anchored concrete pile wall: A case study

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This thesis reviews the numerical analysis of anchored concrete pile walls
and comparison of field measurements and numerical values in terms of the stability
of the structure and soil. The deep excavation supported by anchored pile walls,
namely Gazino Station excavation, Ulus-Keçiören Metro project. After an extensive
literature review on anchors, anchored structures and deep excavations, the
excavation of Gazino [...]

Nis

5

Stabilization of surficial soils with sand in a salt crystalliser pond

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Salt has a key role in the human life, and at industry such as chemistry, transportation,
agriculture and water conditioning and about 208 million tonnes is the salt production of the
world as 2004.
Tekel Çamaltı Solar Salt Plant is the one of the biggest producer of salt in Turkey with 25
percent of Turkey’s demand. From the establishment [...]

Nis

5

Spectral characteristics of wind waves in the Eastern Black Sea

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Wind waves are highly complex, random phenomena. One way to describe
the irregular nature of the sea surface is the use of wave energy spectrum.
Spectral information for wind waves in the Black Sea is extremely limited.
Knowledge on spectral characteristics of wind waves would contribute to
scientific, engineering and operational coastal and marine activities in the
Black Sea. The [...]

Nis

5

3D finite element modelling of surface excavation and loading over existing tunnels

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The influence of surface excavation and loading on the existing tunnels has
been investigated using a Finite Element Method program, Plaxis 3D
Tunnel. A parametric study has been carried out where the parameters
were the depth of the surface excavation, the eccentricity of the excavation
with respect to the tunnel axis, the height of the embankment fill and the
stiffness [...]

Nis

5

Interactions between closely spaced signalized intersections

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For long years traffic engineers, try to find a way to model traffic flow characteristics. One
of the methods used fort his purpose is evaluating the obtained data by using statistical
methods. However, the most important problem is to find a distribution that defines the
data properly and also can be applied easily. Because it meets these properties [...]

Nis

5

Design of urban water distribution system by using genetic algorithm

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Mathematical solution of water distribution systems is difficult and time
consuming because of the fact that formulations used for the design of water
distribution systems include exponential functions and have a lot of unknowns. In
addition to this, there are a lot of solutions that are hydraulically acceptable. The
equations for the desining of water supply systems are not [...]