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Register a new userSide Effect Loads on Shear Diaphragm in Stone Buildings
تأثير الأحمال الجانبية على الجدران الحاملة في الأبنية الحجرية
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Tishreen University ورقة بحثية
Publication date
2018
fields
Structural Engineering
and research's language is
العربية
Authors
طلال ممدوح شرف( باحث )
Created by
Shamra Editor
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تم البحث بسلوك جدران القص البازلتية للمباني المتبقية من العصور الغابرة كبحث تجريبي، و مقاومتها للعوامل الطبيعية و الحمولات الأفقية الناتجة عن الرياح و الزلازل، للاستفادة منها في الحفاظ على المباني الحديثة و المرتبطة ببلاطات و جوائز كجدران قص أفقية على الارتفاع الطابقي في المناطق الحارة و الباردة في القارة الأفريقية و الأسيوية و مناطق أخرى مشابها لها على السواء، للاستعاضة بها عن جدران القص الخرسانية المسلحة و المعدنية التي تفقد مقاومتها للعوامل المذكورة أعلاه. لدى معاينة الأبنية و توضع الشقوق الرأسية و المائلة الناتجة عن الحمولات الجانبية، تبين أن ظهور الشقوق يتعلق بصلادة مقطع الجدار و بمواصفات الحجر البازلتي و تصميم قاعدة الجدار . تم البحث لتحديد المتانة و نفوذية الماء و المقاومة على الضغط و الشد لعينات من الأحجار البازلتية المستخدمة في الأبنية الحجرية التاريخية و مواقع تواجدها بالطرائق المخبرية. تم حساب الشدة الزلزالية على واجهة البناء في مستوى البلاطات بالتوافق مع المواصفات و الاشتراطات الدولية مع الاقتراح لطريقة حساب الجدار الحامل من الحجر البازلتي لبناء من عدة أدوار و قبو أخذين بعين الاعتبار المقاومة المميزة للبازلت حسب كثافته على الضغط و الشد و معامل الحجر البازلتي في العملية الحسابية.
The behavior of the basaltic shear diaphragms of the remaining buildings of ancient times was investigated as experimental research,and its resistance to natural factors and horizontal loads resulting from wind and earthquakes,to take advantage of them in the maintenance of modern buildings,which are associated with floors and beams as horizontal shear diaphragmsIn the hot and cold areas of the African continent, Asia and other similar areas,to replace the reinforced concrete shear diaphragms,and metal shear diaphragms that lose their resistance to the above factors. When the buildings are inspected, the vertical and slanted slits resulting from the side loads are placed,it was found that the appearance of the cracks related to the hardness of the shear diaphragm section, the basalt stone specifications and the design of the shear diaphragm base.The research was conducted to determine the durability, water permeability and resistance to pressure and tensile strength of basalt stone samples used in historic stone buildings and their location in laboratory methods.Horizontal loads resulting from seismic intensity were determined on the front of the building at the tile level according to international requirements and specifications.The method of calculating the basaltic shear diaphragms was applied by applying arithmetic to build a basalt stone from several floors and a basement, taking into account the characteristic resistance of basalt, depending on its density from pressure and stretching and basalt stone in calculating.
References used
SNIP, II-7-81 *Construction in seismic regions. Gosstroyof Russia. - Moscow: State Unitary Enterprise - 2000, – 44peg, maps OCP-97
POLYAKOV, V. S. Reinforced concrete and stone structures of seismic resistant buildings and structures. - Tomsk: Publishing house of TASU, 2006. - 290 p
BRONSHTEIN,I.N. SEMENDYAYEV,K.A.:Handbook of Mathematics for engineers and Student. Springer Berlin Heidelberg. Aug 24. 2007 - Mathematics
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The retaining walls are one of most types of engineering constructions and it have
built from natural stones before discovering concrete, Where natural stones have
considered one of the early human materials used in building engineering constructio
ns for
thousands of years, and many facilities in ancient civilization still existing effects so far,
And after the discovery of the concrete and reinforced concrete, the retaining walls which
was built from natural stones diminished relatively
Despite the years this retaining walls has not lost its luster and brilliance, and there
is increased interest in recent years in using new building material which consists of
manufactured stones where used together with traditional construction materials in several
areas both in geotechnical engineering or building … Etc .
This retaining walls present simple technical solutions and it is desirable for aesthetic
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In addition to being economical solutions limited cost compared to traditional
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This research deals with the study of the behavior of Segmental Stone Retaining
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RC moment-resisting frames (RCMRFs) have commonly been used for low-to-moderate rise buildings in
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motions if they are properly designed and detailed
to dissipate the seismic input energy through
deformations in inelastic range. The connections between beams and columns thus become critical
components to the performance of these structures.
In conventional RCMRF connections, the width of the beam does not exceed the width of the column.
Adopting a flat beam system for the design scheme provides many advantages, such as the reducing the
amount of formwork required, the simplicity for repetition, and the decrease of the required story height.
RCMRFs with flat beams have been used extensively, despite the lack of sufficient information on how
this system behaves under earthquake loading which leads the codes to restrict the use of flat beamcolumn
connections in earthquake prone regions.
In this paper, the thermal
performance of the doctors and nurses housing building in Aleppo
walls, consisting of the hollow blocks with inside styropor sheet and
compare it with a wall consisting of hollow blocks with eternal
continuous insulatin
g styropor layer and the effect of adding
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The study showed that the use of the block with inside styropor slice
was not useful regarding the thermal behavior and causing large and
intense thermal bridges generation. However the use of block with
continuous styropor layer made the temperature distribution more
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The phenomenon of impact between the adjacent buildings is one of the most important reasons for collapse of buildings during the
earthquakes for that most of the codes resort to avoid impact by
increasing the distance between adjacent buildings, b
ut on the other hand high cost of land requires us to take advantage of the largest possible area in addition to the difficulty of making the separation architecturally and in particularly for high buildings the separation may offer up to 50 cm.
We tried to have this research one of the studies that discuss the
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modeling the pounding and the most appropriate way to study the impact depending on the program dynamic analysis Ansys
(Autodyn Ver. 11) then chose several cases for study seismic
impact in three-dimensional models to cover most of the study
variables that may affect this phenomenon, and we doer non- linear dynamic analysis for all cases, with applying acceleration function is defined by equation its constants are changing with processing the seismic records data.
After finishing the analysis for all the models we have discussed
changing the transitions and stresses and strains , and studied the
factors affecting the impact , and discussed results of study and
then we have summarizes the recommendations in that we see fit
through this search.
Hydraulic drives are able to generate high forces and move large loads. With the help of proportional
valves, it is possible to control movements fast and accurately.
Depending on the application, a linear cylinder, a rotary cylinder or a rotary mo
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compare among various types of cylinders which are common by used. We compared different conditions
for cylinders with friction and without it.
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