This research presents a study with the help of Finite Element Method and the use of
CATIA V5 program to know the behavior of a permissible link - column used in metal
structures at high temperatures (on fire). In this article we will present an an
alysis using the
finite element method using the CATIA V5 program for the effect of different engineering
parameters (plate thickness, screw diameter, reinforcement nerves) on the behavior of
joints used in metal structures on fire. We also studied the effect of the number of bolts on
the stresses and transitions in the link and their comparison with the welding cases. We
studied and analyzed the studied model and obtained the deformation and failure schemes
at high temperatures, the flow charts and the temperatures that show the behavior of this
link to the fire. We also obtained the stress and strain schemes for the link and the transport
and load schemes at different temperatures and the behavior of this link at these different
temperature.
In the light of the conceptual remarks that Ibn Sinan adopts as
evaluative features of the quality of poetry, among which are the
prevailing proverbs and unsystematic verses, we do discover the world of
the poet with its psychological, intellectua
l and social horizons. This is so
since they uncover the secrets of the intuitive character of the creator and
its potential introvert features; and, at the same time, they stand as one
part of his understandability of poetry. Poetry expresses emotions, and
reflects a vision full of influential sentiments of the creator. So, what if
the poet were a critic?
Thin walled Steel products are very much used in the construction industry, where it
is cold formed from uniform thickness steel plates. This study aims at determining the
optimal section of cold formed thin walled lipped C compressed member under
the effect
of several levels of axial force using Genetic Algorithm.
The research found that the genetic algorithm is able to resolve the issue of the
optimal design of studied column with high efficiency, accuracy. Also it found that the
torsional flexural buckling constraint and the overall buckling constraint in x-direction are
the effective constraints in case of long height.
The study recommends restudying the same issue as a multi objective optimization
problem by adding additional objective functions which are the overall buckling in x&y
directions.
This research deals with analytical study of exterior Beam-Column
connections behavior under seismic load.
Tow parameters were considered: axial load on the column and
confinement of joint region with stirrups.
Ansys program was used to analytica
l study of three types of exterior
Beam-Column connections under cyclic load.
The results were shown a good agreement with general behavior of
three types.
The analytical results indicate that the tow parameters will improve
the behavior of the connections delay cracking at joint core and
increasing connection stiffness in rotation and displacement with
decreasing shear value at joint.
This research paper revolves around studding the repairing of reinforced concrete
columns which are subjected to an axial compression load, by using ferrocement jackets
containing two layers of Welded Wire Meshes (WWMs), which are in turn encapsula
ted in
high strength mortar.
The experiments were carried out at the concrete lab in the faculty of civil engineering,
Damascus University. The results were analyzed in order to determine the effects of
repairing technique on Ultimate Compressive Strength, Ductility of the Column and Failure
Modes. Empirical results confirmed the efficiency of using locally available welded
wire meshes in repairing of reinforced concrete columns.
The recent few decades have witnessed growing interest in the environment- friendly
energy sources. Sea Wave Energy is considered as one of the energy sources in the
countries that are located on the seas and oceans. However, this energy source, ga
ined little
interest in Syria compared to sun and wind sources. The aim of this research is to
contribute to the body of research in this field, by developing and implementing an
experimental model of an oscillating water column system, which converts sea wave
energy into electrical energy.
Additionally, the research uses a set of true and false experiments to study the impact
of the technological variables of the system on its efficiency, hence on the number of
rotation of its Wells turbine. The results were represented graphically, and
recommendations and suggestions were provided for the possibility to apply this
technology in Syria.
Our subject contains studying criterions which ensuring a durable serving of concrete
frame joints, and then choosing two connections according to its deployment and the
availability of its arithmetic relations and easy to be prepared from local ma
terials, and
discuss experimental results of the resent study which allow us to achieve the next part of
our research,which is a structural designing programme by visual basic language to serve
the work in order to be fast and precise.
the last part of the subject is comprising a number of actualizations which confirm
that the process of programming is correct, and then compare the results of experimental
programs and code with our programme results to achieve many important ameliorations
on this programme to become more easily and better.
Multichannel Analysis of Surface Waves (MASW) is increasingly applied in
earthquake engineering and geotechnical problems, because of simple field
procedures, time and cost saving. It can allow for maximum areal coverage,
thus reduces the number o
f needed boreholes.
This study illustrates the importance of the use of active and passive MASW
to measure the average shear wave velocities of the upper surface layers (upper
30m) of the city of Irbid in North Jordan by integrating the outputs of the
active and passive approaches, and by investigating the relationship between
the estimated average shear wave velocity with the following geotechnical
variables, Bearing capacity, depth of embedment, and soil thickness.
