OPTIMAL SEISMIC PERFORMANCE DESIGN OF REINFORCED CONCRETE FRAMES BASED ON LIFE-CYCLE COST

Title:

OPTIMAL SEISMIC PERFORMANCE DESIGN OF REINFORCED CONCRETE FRAMES BASED ON LIFE-CYCLE COST
This work was partially supported by a grant from the Research Grants Council of Hong Kong (Project No. DAG03/04.EG04).

DOI No:

10.1142/9789812701480_0030

Source:

TALL BUILDINGS (pp 180-186)

Author(s):

XIAO-KANG ZOU
Department of Building and Construction, The City University of Hong Kong, Kowloon, Hong Kong, China
CHUN-MAN CHAN
Department of Civil Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China
GANG LI
State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian Univ. of Technology, Dalia, 116024, China

Abstract:

An optimization technique by incorporating the performance-based seismic design of concrete building structures in the form of multiobjective optimization has been developed to meet the emerging trend of performance-based design approach. Specifically, the life-cycle cost of a reinforced concrete (RC) building frame is minimized subject to multiple levels of seismic performance design criteria. Explicit formulation of design constraints involving inelastic drift response performance caused by pushover loading is expressed with the consideration of the occurrence of RC plasticity and the formation of plastic hinges. Due to the fact that the initial construction cost and the expected damage loss are conflicting by nature, the life cycle cost of a building structure can be posed as a multiobjective optimization problem and solved by the ε–constraint method to produce a Pareto optimal set, from which the best compromise solution can be selected. The methodology for each Pareto optimal solution is fundamentally based on the Optimality Criteria (OC) approach.

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