THE PRACTICAL ANTI-EARTHQUAKE OPTIMUM DESIGN OF CIVIL INFRASTRUCTURE NETWORK SYSTEM

摘要

The optimum anti-earthquake design of civil infrastructure system (CIS) is a problem with numerous variables, complex Constraints and high dimensions. In this paper, we try to alleviate the difficulty by dividing the design into two stages, i.e. system optimization and structure optimization. Taking the structure design load or reliability as bridge, the two stages are joined together. Considering the future loss expectation, the global optimum objective is to minimize the total investment cost (the sum of system original cost and future loss expectation). Through changing the system optimum variables into fewer discrete ones, an effective optimum method, for CIS anti-earthquake design is suggested.