Maintenance strategy optimization of existing bridge network with consideration of uncertainty(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2015年06期
- Page:
- 71-78
- Research Field:
- 桥梁与隧道工程
- Publishing date:
Info
- Title:
- Maintenance strategy optimization of existing bridge network with consideration of uncertainty
- Author(s):
- WANG Xiao-ming ; HE Yao-bei ; HE Shuan-hai
- 1. Institute of Bridge Engineering, Chang’an Univsity, Xi’an 710064, Shaanxi, China; 2. Key Laboratory of Bridge Detection Reinforcement Technology Ministry of Communication, Xi’an 710064, Shaanxi, China; 3. Transportation Survey and Design Institute of Hunan Province, Changsha 410008, Hunan, China
- Keywords:
- bridge engineering; bridge network; performance; reliability; maintenance strategy optimization; network topology
- PACS:
- U445.72，U445.74
- DOI:
- -
- Abstract:
- A novel maintenance optimization approach under uncertainty was proposed for existing bridge network to optimize the whole management. The reliability index was employed to evaluate the multilevel performance of bridge component, individual and network. The network-level maintenance optimization framework was constructed. The probability model of bridge life-cycle performance was established. Besides, the mathematical models of network maintenance strategy effect and cost were presented. Based on Visio network graphic modeling method, an auto-identification technology of bridge network topology was developed. A network performance probability evaluation method based on failure branch matrix was put forward. The network path connectivity subject to traffic loads and environmental erosion was taken as an example and analyzed. The results show that the method proposed in this paper can strengthen the processing ability for larger-node and complex network. The combination of the method and the multi-objective optimization algorithm realizes the whole computerization for the network-level maintenance strategy optimization with consideration of uncertainty. Pareto solution of network-level optimization is the global optimal solution. The network-level maintenance optimal strategies obviously improve the integral performance of bridge network, avoid the short board effect caused by the traditional strategies effectively, and achieve the global optimal allocation of funds.
Last Update: 2015-11-23