| Title |
Thickness Design of Composite Pavement for Heavy-Duty Roads Considering Cumulative Fatigue Damage in Roller-Compacted Concrete Base |
| Authors |
김경수(Kim, Kyoung Su) ; 김영규(Kim, Young Kyu) ; 차이 리후워(Chhay Lyhour) ; 이승우(Lee, Seung Woo) |
| DOI |
https://doi.org/10.12652/Ksce.2022.42.4.0537 |
| Keywords |
중하중 도로; 복합포장; 롤러전압콘크리트 기층; 포장 두께 설계 Heavy duty road; Composite pavement; Roller-compacted concrete base; Pavement thickness design |
| Abstract |
It is important to design the pavement thickness considering heavy-duty traffic loads, which can cause excessive stress and strain in the pavement. Port-rear roads and industrial roads have many problems due to early stress in pavement because these have a higher ratio of heavy loads than general roads such as national roads and expressways. Internationally, composite pavement has been widely applied in pavement designs in heavy-duty areas. Composite pavement is established as an economic pavement type that can increase the design life by nearly double compared to that of existing pavement while also decreasing maintenance and user costs. This study suggests a thickness design method for composite pavement using roller-compacted concrete as a base material to ensure long-term serviceability in heavy-duty areas such as port-rear roads and industrial roads. A three-dimensional finite element analysis was conducted to investigate the mechanical behavior and the long-term pavement performance ultimately to suggest a thickness design method that considers changes in the material properties of the roller-compacted concrete (RCC) base layer. In addition, this study presents a user-friendly catalog design method for RCC-base composite pavement considering the concept of linear damage accumulation for each container trailer depending on the season. |