A seismic design method for reinforced concrete moment resisting frames using modal strength reduction factors

2018 ◽  
Vol 17 (1) ◽  
pp. 337-390 ◽  
Author(s):  
Edmond V. Muho ◽  
George A. Papagiannopoulos ◽  
Dimitri E. Beskos
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Design Method ◽  
Strength Reduction ◽  
Moment Resisting Frames ◽  
Moment Resisting ◽  
Seismic Design Method ◽  
Reduction Factors

scholarly journals A Hybrid Seismic Design Method for Steel Irregular Space Moment Resisting Frames

2020 ◽  
pp. 1-36 ◽  
Author(s):  
Angelos S. Tzimas ◽  
Konstantinos A. Skalomenos ◽  
Dimitri E. Beskos
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Moment Resisting Frames ◽  
Moment Resisting ◽  
Seismic Design Method

Modal strength reduction factors for seismic design of steel moment resisting frames

2018 ◽  
Vol 154 ◽  
pp. 23-37 ◽  
Author(s):  
Dimitris G. Loulelis ◽  
George A. Papagiannopoulos ◽  
Dimitri E. Beskos
Keyword(s):  
Seismic Design ◽  
Strength Reduction ◽  
Steel Moment Resisting Frames ◽  
Moment Resisting Frames ◽  
Moment Resisting ◽  
Reduction Factors

Research Situation on the Performance-Based Seismic Design Method for Reinforced Concrete Structure

2010 ◽  
Vol 163-167 ◽  
pp. 1757-1761
Author(s):  
Yong Le Qi ◽  
Xiao Lei Han ◽  
Xue Ping Peng ◽  
Yu Zhou ◽  
Sheng Yi Lin
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Design Method ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Seismic Evaluation ◽  
Seismic Codes ◽  
Performance Based Seismic Design ◽  
Capacity Calculation ◽  
Seismic Design Method

Various analytical approaches to performance-based seismic design are in development. Based on the current Chinese seismic codes，elastic capacity calculation under frequent earthquake and ductile details of seismic design shall be performed for whether seismic design of new buildings or seismic evaluation of existing buildings to satisfy the seismic fortification criterion “no damage under frequent earthquake, repairable under fortification earthquake, no collapse under severe earthquake”. However, for some special buildings which dissatisfy with the requirements of current building codes, elastic capacity calculation under frequent earthquake is obviously not enough. In this paper, the advanced performance-based seismic theory is introduced to solve the problems of seismic evaluation and strengthening for existing reinforced concrete structures, in which story drift ratio and deformation of components are used as performance targets. By combining the features of Chinese seismic codes, a set of performance-based seismic design method is established for reinforced concrete structures. Different calculation methods relevant to different seismic fortification criterions are adopted in the proposed method, which solve the problems of seismic evaluation for reinforced concrete structures.

EVALUATION OF THE DYNAMIC CHARACTERISTICS FOR SEISMIC DESIGN OF MULTI-STORY BUILDINGS

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Aya Aboelhamd ◽  
Aman Mwafy ◽  
Suliman Gargoum
Keyword(s):  
Reinforced Concrete ◽  
Seismic Design ◽  
Building Codes ◽  
Fundamental Period ◽  
Braced Frames ◽  
Data Set ◽  
Structural Dynamic ◽  
Moment Resisting Frames ◽  
Moment Resisting ◽  
Period Data

The fundamental period of vibration is a critical structural dynamic characteristic in seismic design. Several expressions for the calculation of the fundamental period have been recommended by different building codes and previous studies. However, further studies are still needed to evaluate the design expressions used for the calculation of the fundamental periods and assess the need for further refinement. In this study, comprehensive fundamental period data from two sources is collected and compared with different formulas from building codes and previous studies. The first data set is obtained from 147 instrumented buildings with various lateral force resisting systems (LFRSs). The second set of period data are collected from the dynamic response simulations of selected structures. Different LFRSs are considered, including steel moment resisting frames (SMRFs), reinforced concrete moment resisting frames (RCMRFs), reinforced concrete shear walls (RCSWs), concentrically braced frames (CBFs), eccentrically braced frames (EBFs), masonry structures and pre-cast structures. The correlations between the derived period expressions with those recommended by the design provisions show that the code approach is conservative enough for SMRFs, CBFs, masonry buildings and pre-cast structures. For RCMRFs, EBFs and RCSWs, the design code is slightly unconservative for low-rise buildings. The outcomes of the study help to arrive at more efficient and cost-effective seismic design of buildings with different characteristics.

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