Do you want to publish a course? Click here

The effect of seismic pounding on the buildings in different geometric and dynamic properties

تأثير الصدم الزلزالي على الأبنية مختلفة الخصائص الهندسية و الديناميكية

2134   1   76   0 ( 0 )
 Publication date 2014
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

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, but 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 subject of seismic pounding where we discussed the methods for 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.


Artificial intelligence review:
Research summary
يتناول البحث تأثير الصدم الزلزالي على الأبنية المتجاورة ذات الخصائص الهندسية والديناميكية المختلفة. يركز البحث على كيفية نمذجة هذه الظاهرة باستخدام برنامج التحليل الديناميكي Ansys (Autodyn Ver. 11) ويستعرض عدة حالات لدراسة تأثير الصدم على الانتقالات والإجهادات والتشوهات في الأبنية. تم تحليل نماذج ثلاثية الأبعاد للأبنية المتجاورة مع اختلاف في ارتفاعاتها ومناسيب بلاطاتها والمسافات الفاصلة بينها، وتمت دراسة تأثير الصدم على هذه النماذج باستخدام معادلة تسارع زلزالي محددة. توصل البحث إلى أن الصدم الزلزالي يسبب أضراراً جسيمة للأبنية المتجاورة، خاصة في حالة عدم كفاية المسافة الفاصلة بينها، وأوصى بضرورة زيادة المسافة الفاصلة بين الأبنية لتقليل تأثير الصدم.
Critical review
دراسة نقدية: يعتبر البحث مهماً في مجال الهندسة الإنشائية، حيث يسلط الضوء على مشكلة حقيقية تواجه الأبنية في المناطق الزلزالية. ومع ذلك، يمكن توجيه بعض الانتقادات البناءة للبحث. أولاً، قد يكون من المفيد تضمين دراسات مقارنة مع نتائج أبحاث أخرى في نفس المجال لتأكيد النتائج. ثانياً، لم يتناول البحث بشكل كافٍ تأثير المواد المختلفة المستخدمة في البناء على نتائج الصدم الزلزالي، مما قد يؤثر على دقة النتائج. ثالثاً، يمكن تحسين البحث بإضافة توصيات أكثر تفصيلاً حول كيفية تطبيق النتائج في التصميم الهندسي الفعلي للأبنية.
Questions related to the research
  1. ما هو الهدف الرئيسي من البحث؟

    الهدف الرئيسي من البحث هو دراسة ظاهرة الصدم الزلزالي باستخدام برنامج حاسوبي متطور قادر على نمذجة مناطق الصدم المتوقعة واقتراح الحلول التي تؤمن السلامة الإنشائية للأبنية المتجاورة.

  2. ما هي الأدوات المستخدمة في البحث لنمذجة الصدم الزلزالي؟

    تم استخدام برنامج التحليل الديناميكي Ansys (Autodyn Ver. 11) لنمذجة الصدم الزلزالي وتحليل تأثيره على الأبنية المتجاورة.

  3. ما هي النتائج الرئيسية التي توصل إليها البحث؟

    توصل البحث إلى أن الصدم الزلزالي يسبب أضراراً جسيمة للأبنية المتجاورة، خاصة في حالة عدم كفاية المسافة الفاصلة بينها، وأوصى بضرورة زيادة المسافة الفاصلة بين الأبنية لتقليل تأثير الصدم.

  4. ما هي التوصيات التي قدمها البحث لتقليل تأثير الصدم الزلزالي على الأبنية؟

    أوصى البحث بزيادة المسافة الفاصلة بين الأبنية المتجاورة، وتجنب إضافة جدران قص لأحد المبنيين دون الآخر، واستخدام فواصل زلزالية مناسبة لتقليل تأثير الصدم.


References used
RIEDEL W. 2000. "Beton unter dynamischen Lasten..." Phd Thesis. EMI. Freiburg Germany. P1200
KASAL, JAGIASI, (1996) ." Maison Survey And Analysis Of Building Pounding During 1989 Loma Prieta Earthquake Elsevier Science Ltd". P 2103
AUTODYN VER.11.2000. "finite element analyses and Dynamic Analysis and Design of Three-Dimensional Structures" . P788
rate research

Read More

A proper matching of agricultural machinery with properties of materials forms the essential requirements which lead to best performance of machine. To achieve that goal, availability of data and precision analysis on engineering and physical prop erties of these materials is required. This forms important and necessary data base for the design, development and structure of agricultural machinery and equipments, control and analysis of machines and determination of efficiency of machines. This research was carried out to study some engineering and physical properties of seeds of common Syrian crops to be used in the design and development of some agricultural machinery and equipments. Results provided the shapes and dimensions of cells of feeding devices for planting seeds of some crops namely, wheat, maize, lentil, pea, chick-pea, kidney bean, broad bean and cotton. In addition a set of empirical equations were established to be used to predict, with reasonable accuracy, the physical properties of crops seeds based on measurement of any of three dimensions (length, width and thickness).
Taght find differing formulas and buildings simslar in the words of the Koran within the context compares names and names in terms of definition and saying that the indefinite , and plural forms , and between the acts and deeds ; the expression of th e past and the present tense , and the construction of the known and the construction of the unknown , and the names and deeds ; the expression palmdhara and the actor's ma,e , and source and the source , deals with the meanings and uses nuances according to the required linguisric context , and the context of the case , and trying to analyze those formulas and structures analysis linguistically accurate up to eventually secures or end semantic of isomorphism those words and similarity . And display search the views of scientists from linguists and dropped by the interpreters and Blagaan between the different destinations , opinions and attitudes between similar to those formulas and buildings and similarity , or different and contrast , all within the quranic installation and linguistic jewelers , and appropriate , and the article And ends with a conclusion find the findings of the research involved .
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.
The experiment carried out in the agricultural Center (Boqa) of Tishreen University, in the province of Lattakia, during the agricultural season (2014), in order to study the effect of different types (cattle, sheep, poultry) and rates (0, 15.30 to n/ha) of the compost on durum wheat (Doma1). It farmed on (11.23.2014), according to complete system of randomized sectors (27 bis).The compost was added within the lines of Agriculture (10/06/2014). The results showed a response to the average of all the studied traits (plant density (plant/m2), plant height (cm), the length of awn (cm), grains/spike weight (g), the weight of 1000 grains (g)) positively organic fertilizing. While no significant differences were recorded in the averages of the traits studied (plant density (plant/m2), plant height (cm), the length of awn (cm), grains/spike weight (g), 1000 grains weight (g)) under the manure type. In the case of overlap between the type and the rate of organic manure, it has recorded a significant and high differences between the treatments. The treatment (30 ton/ha-1 poultry) was the most influential of all the studied traits. It gave the following results: plant density (331.70 plants/m2), plant height (95.85cm), the length of awn (16.24 cm), grains/spike weight (1.66 g), 1000 grains weight (49.57 g).
comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا