×
The submission system is temporarily under maintenance. Please send your manuscripts to
Go to Editorial ManagerThe target of architecture is present buildings serve the requirements of the human both of aesthetic , functional and safety to serve the people needs , and design buildings could resist the exterior envelopes that may effect on their work in perfect way , and one of the big risks of damage on buildings and people is " the earthquake " and with the scientific developments of buildings field specially the designing of tall buildings ,the architect should have strategies for seismic design for tall buildings. And with The need of founding aclear framework of the strategies of architecture design resistant to earthquake, especially in tall buildings .the research aim to found these strategies by the identification of the main load applied on the tall building structure and the best solution of structure design that serve the resistance of lateral load , then search for the best of configuration for seismic design. Also define the " Damping systems in tall buildings " and clarify the main types and the advantages and disadvantages of each one . Finally discuss the design considerations of using damping systems which found in the research samples .
This paper studies the effect of different design spectral response acceleration parameters as suggested by the uniform building code (UBC), unified facilities criteria (UFC), and Iraqi seismic code(1997) (ISC 97) on the seismic response of reinforced concrete multi-story framed building located in Baghdad city, Iraq. These parameters are: (a) spectral response accelerations Ss, at short periods, and S1 at a 1-second period in accordance with international building code (IBC), (b) seismic zone factor (Z) according to UBC, (c) Seismic hazard zoning coefficient (Z) according to ISC 97. In this paper, first, the elastic seismic responses for significant modes of vibration for chosen building under design response spectrum that obtained from the above mentioned codes are calculated, and then a comparison was made among different design spectral response acceleration parameters. The intent of this study is to review the seismic provisions of the current edition of Iraqi seismic code (1997) to determine whether it provides an equivalent level of safety to that contained in other international codes. Design base shears, lateral seismic forces, inter story drifts, response spectrum modal, effective seismic modification, floors acceleration and story shears are comparatively presented.
In this study, previous researches were reviewed in relation to the seismic evaluation and retrofitting of an existing building. In recent years, a considerable number of researches has been undertaken to determine the performance of buildings during the seismic events. Performance based seismic design is a modern approach to earthquake resistant design of reinforcement concrete buildings. Performance based design of building structures requires rigorous non-linear static analysis. In general, nonlinear static analysis or pushover analysis was conducted as an efficient instrument for performance-based design. Pushover analysis came into practice after 1970 year. During the seismic event, a nonlinear static analysis or pushover analysis is used to analyze building under gravity loads and monotonically increasing lateral forces. These building were evaluated until a target displacement reached. Pushover analysis provides a better understanding of buildings seismic performance, also it traces the progression of damage and failure of structural components of buildings.