Seismic optimization design for uniform damage of reinforced concrete moment-resisting frames using consecutive modal pushover analysis

In this study, a practical optimization procedure is developed for uniform damage design of reinforced concrete moment-resisting frames using consecutive modal pushover analysis based on the framework of performance-based earthquake engineering. Consecutive modal pushover, which can capture the higher-mode effect well, is employed to derive the inelastic seismic demands of structures subjected to considered seismic hazards. Furthermore, the optimization problems are formulated using the profile of inter-story drift ratios and component hinge rotations to redistribute the steel reinforcements from components with low damage to ones that experience high damage under the constant-cost constraint, until a state of uniform damage distribution prevails. By applying the proposed design procedure to two prototype frames with five and eight stories designed using the Chinese Seismic Design Code (GB 50011-2010), the efficiency of the method as well as the variation of steel reinforcements is demonstrated. The seismic performances of final solutions and prototype frames are compared through nonlinear dynamic analysis for scenarios of 22 ground motions matching well with the code-compliant spectrum. The results show that the proposed method allows for a significant reduction of maximum story drifts combined with more evenly distributed story drifts and component hinge rotations, indicating better seismic performance for the optimized structures.

[1]  Chun Man Chan,et al.  Elastic and inelastic drift performance optimization for reinforced concrete buildings under earthquake loads , 2004 .

[2]  Gang Li,et al.  Modified-modal-pushover-based seismic optimum design for steel structures considering life-cycle cost , 2012 .

[3]  Subhash C. Goel,et al.  A Seismic Design Lateral Force Distribution Based on Inelastic State of Structures , 2007 .

[4]  W. J. Hall,et al.  Earthquake spectra and design , 1982 .

[5]  Qian Wang,et al.  Multiobjective optimization for performance-based design of reinforced concrete frames , 2007 .

[6]  Kyungha Park.  Lateral load patterns for the conceptual seismic design of moment-resisting frame structures , 2007 .

[7]  Orlando Díaz-López,et al.  Life-cycle optimization in the establishment of performance-acceptance parameters for seismic design , 2002 .

[8]  Dimitrios Vamvatsikos,et al.  Application of Nonlinear Static Procedures for the Seismic Assessment of Regular RC Moment Frame Buildings , 2014 .

[9]  Iman Hajirasouliha,et al.  New Lateral Force Distribution for Seismic Design of Structures , 2009 .

[10]  Manolis Papadrakakis,et al.  Performance-based optimum seismic design of reinforced concrete structures , 2008 .

[11]  Faramarz Khoshnoudian,et al.  A consecutive modal pushover procedure for estimating the seismic demands of tall buildings , 2009 .

[12]  Iman Hajirasouliha,et al.  Toward more rational criteria for determination of design earthquake forces , 2006 .

[13]  Peter Fajfar,et al.  Consistent inelastic design spectra: Strength and displacement , 1994 .

[14]  November.  Earthquake forces for the lateral force code , 2000 .

[15]  Iman Hajirasouliha,et al.  An efficient performance‐based seismic design method for reinforced concrete frames , 2012 .

[16]  Min Liu,et al.  Multiobjective optimization for performance‐based seismic design of steel moment frame structures , 2005 .

[17]  Chris P. Pantelides,et al.  Performance‐based design using structural optimization , 2000 .

[18]  Izuru Takewaki,et al.  Design-Oriented Ductility Bound of a Plane Frame Under Seismic Loading , 1997 .

[19]  H Moghaddam,et al.  A NEW APPROACH FOR OPTIMUM DESIGN OF STRUCTURES UNDER DYNAMIC EXCIATION , 2004 .

[20]  Chun Man Chan,et al.  Optimal seismic performance-based design of reinforced concrete buildings using nonlinear pushover analysis , 2005 .

[21]  Božidar Stojadinović,et al.  Energy-based Seismic Design of Structures using Yield Mechanism and Target Drift , 2002 .

[22]  Anil K. Chopra,et al.  Dynamics of Structures: Theory and Applications to Earthquake Engineering , 1995 .

[23]  Ding Yang.  Advances in failure mode optimization and damage control for highrise steel frames during earthquakes , 2011 .

[24]  Min Liu,et al.  Optimal seismic design of steel frame buildings based on life cycle cost considerations , 2003 .