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Register a new userStudying of naval conveyer concrete quay wall (Caissons) and compare with different types
دراسة جدار رصيف بحري من الكتل البيتونية المفرغة (كيسونات) و مقارنته مع نماذج مختلفة
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Added by
Aِl-Baath University ورقة بحثية
Publication date
2016
fields
Structural Engineering
and research's language is
العربية
Authors
ميثاء بلال( باحث )
Created by
Shamra Editor
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في هذا البحث سيتم دراسة عدة أن واع مختلفة من جدران الأرصفة المنفذة في دول مختلفة, و ستتم الدراسة الإنشائية لأحد هذه النماذج وفق الشروط و المعايير الخاصة بالجمهورية العربية السورية ممثلة بالمعطيات الجيوديزية و الجيوتكنيكية المحلية, و الحمولات الدائمة و المؤقتة المؤثرة, و استقرار و ثبات النموذج المدروس وفق الشروط المحلية.
In this search, we will study variables types of quays constructed in variables countries of world, the structural study will done for one of these types according to Syrian Arab Republic conditions with its local geodesic - geotechnical features, permanent and temporary effected loads, also stability and fixity of the studying type according to local conditions and cods.
References used
KARAKU, H, July 2007-New Seismic Design Approaches For Block Type Quay Walls. , M.S., 173 pages
TSINKER, G.P, 2004- Port Engineering: planning, construction, maintenance, and security. 881 pages
LEE,C.J., 2005-Centrifuge Modeling of The Behavior of Caisson-Type Quay Walls During Earthquakes. Soil Dynamics and Earthquake Engineering 25,Pages 117–131
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As the huge development in all life fields especially the commercial exchange with
its variable types, more specifically the maritime, due to the continuous increase in the size
of the accompanying big cargos. Ports significance emerges as the most
important
establishments to support the national economy. So, it has to be highlighted by working to
develop and improve its standard specifications, particularly quays that are used for
anchoring ships. The variety of quays link by geodesic-geotechnical features, material
quality used and available for constructing, quality and size of ships that are anchored at
these ports. The quay walls are designed to be stable and fixed to actualize the enquired
safety conditions so it can offer its service employment without neglecting the economic
factor during design operation. In this research, we will study variable types of quays
constructed in variables countries of the world, the structural study had been done for one
of these types according to the Syrian Arab Republic conditions with its local geodesicgeotechnical
features, permanent and temporary effected loads, also stability and fixity of
the studying type (maritime scurfy quay type with big diameters) according to local
conditions and codes, proceeding the necessary comparative for structural study results of
considered type for determining the importance of this type.
Due to the high importance of designing operating rooms (especially the air conditioning parameters), many studies, researches and international codes were achieved in order to
reach the optimum parameters for this mission. Hundreds of hospitals in
Syria and all around the world are still suffering from wounds contamination during surgery.
This paper is dedicated to re document collect the latest information to help researcher and designers achieving their mission, especially those information that are not available
in one reference by itself.
The research paper discusses the optimal air conditioning requirement like, temperature, humidity, required filtration, number of air changes per hour, pressures to be maintained
and the recommended face velocity. An extended research studies focus on laminar flow system, and its advantages over the conventional ones. It mentions the sterilization supporting systems which use UVGI In-ducts and in rooms.
The paper concluded that new ideas adopting different philosophies by either supplying fresh air from lower rooms areas or laminar flow wall should be further investigated.
This research aims to study the efficiency of flexural strengthening of RC beams with different lengths of CFRP strips by using (NSM) technique. The study is carried out experimentally on (14) concrete beams; the variables considered are (the length
and number of CFRP strips). This is established by dividing the work into two groups: the first one includes (6) beams strengthened by variable carbon fiber strip lengths and one strip, The second group includes (6) beams strengthened by variable carbon fiber strip lengths and two strips, as well as two control beams. The results indicate that carbon fibers have a noticeable effect on increasing the bearing capacity of (NSM) strengthened beams. The results also show that strengthening the beams by CFRP and not along the length of the beam and in one layer does not contribute to increasing beam strength, but when the number of layers increases, an increase in beam strength is noticed at a rate range (40%-72%).
When the temperature of the external surface of a wall increases, it is important to predict what the thickness of the wall will be so that the internal surface of the wall does not exceed a limit value. We will study, by an analytical method, the ca
se in which the external surface temperature is linearly varying with time in order to determine the time for which the temperature does not exceed a predetermined limit value at a given depth from the surface. Two cases will be considered: the first one is for a wall made of a homogeneous material (e.g. concrete) and the second one is for a wall made up of concrete and phase-changing material whose melting temperature will be selected according to the desired temperature. The results obtained show that a significant delay to reach this temperature can be obtained between the two cases.
Ready made post design plays an important role with resin cement ability on
post retention in to the root canal. While the paraposts are the most retentive.
To compare the resistance of serrated Para post, tapered-smooth, and threaded para posts, c
emented with
panivia21 to transverse load.
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