تحليل المباني متعددة الطوابق المتأثرة بالأحمال الزلزالية وفق مدونات مختلفة
Analysis of Multi-Story Buildings Affected by Seismic Loads with Different Codes
- الباحث
- مصطفى ليث جاسم
- المشرف
- علي صادق رشك - ليلى ع. ياسين
- الجامعة
- الجامعة التكنولوجية
- الكلية / القسم
- قسم الهندسة المدنية / الهندسة المدنية
- الشهادة
- ماجستير
- السنة
- 2022
- لغة الرسالة
- انكليزي
- الكلمات المفتاحية
- Seismic loads;Multi-story buildings;Building codes;Structural analysis
Abstract
This study deals with the behavior of buildings located in Baghdad – Iraq, under the influence of seismic using local and international codes to analyze, compare and study this difference on the buildings. After researching and studying the existing structures in the city (high-rise) in densely populated areas, which began to expand its buildings upwards, it became necessary to study and analyze these buildings in general. Thirty-six models (three structural systems and three different heights) were studied. Codes were used for analysis (Iraqi seismic Code 1997, UBC1997, ASCE7-10, Iraqi seismic Code 2017, and the modern seismic map 2019) where cooperation was made with a research team that created a modern seismic map based on seismic data extending from the year (1900 - 2020). In particular, the difference between the Iraqi code 1997 and 2017 is high, especially with the approved seismic coefficient, despite the difference in the two methods in dealing with the seismic coefficient (Z) and two coefficients (Ss, S1). Three construction systems (columns, columns, and shear walls, fully shear walls) came from research and study of the city and the types of construction systems used in it, with a height difference, once for 37 m with ten floors, and once for 55 m with fifteen floors, and finally for a building of 73 m with twenty floors. The results always indicated a very high between the seismic coefficient of the code (UBC97), which is 0.3 for Baghdad, with the Iraqi earthquake code for the year 1997, which is 0.05, while in comparing them with the Iraqi earthquake code 2017, which was ranked second after the code (UBC97). From base shear and displacement, where the 2019 seismic map comes with an average rank higher than 1997 and less than 2017, the static and dynamic analysis was adopted in dealing with the studied structure.
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