Optimization of bridge foundation construction schedule under resource and space constraints

• Main Authors: Hung-Chang Wang, 王鴻章
• Other Authors: 謝孟勳
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/8hyjzy

碩士 === 國立中興大學 === 土木工程學系所 === 107 === When planning the construction plan, if the resource limitation is not considered, the schedule which only use Critical Path Method (CPM) will have significant different from the existing situation. There will be insufficient resources, resulting in construction suspension and waiting for materials. For Seismic Assessment and Retrofit for Freeway Bridges, during the reinforcement construction of the pier foundation, special consideration should be given to the stability and safety of the existing bridges, the excavation work cannot be carried out with unrestricted manner, and this will be forming a space limitation on the selection of the foundation reinforcement working face. Therefore, in view of the above problems, this study takes Bid M41 of Seismic Assessment and Retrofit for Freeway Bridges project (section 1-2) as an example to explore how to optimize the minimum total construction period of the foundation reinforcement construction under the constraints of resources and space. The research deal with the concept of CPM which combined with resource and space constraints, and bring in the evolutionary algorithm to integrate and establish the restricted and objective functions by Python language. After repeated calculations, the approximate minimum completion time is 140 days. Compared with the expert manual scheduling, 153 days, it saves 9.3% (153/140=1.093).