| Title |
A Proposal for Improved Safety Assessment Procedure of Corrugated Steel Plate Structures Using Measured Displacements |
| Authors |
전세진(Jeon, Se-Jin) ; 이병주(Lee, Byeong-Ju) |
| DOI |
https://doi.org/10.12652/Ksce.2020.40.1.0013 |
| Keywords |
파형강판;안전도 평가;Soil-Culvert Interaction (SCI) 방법;내공변위 Corrugated steel plate;Safety assessment;Soil-culvert interaction method;Displacement |
| Abstract |
A systematic approach to assess the safety of corrugated steel plate structures has not been established yet. Therefore, an improved safety assessment procedure was proposed in this study by considering the characteristics of corrugated steel plate structures in which the dead load of backfill soil is dominant and the live load effect is minimized. The proposed procedure can consider the combined effect of axial force and bending moment on the safety, based on the Soil-Culvert Interaction (SCI) method, and can differentiate the maintenance scheme according to the calculated plasticity index. There is also an advantage in enhancing the accuracy of assessment, utilizing the measured displacements. Furthermore, improved methods were proposed by discussing various ways for reasonably improving the proposed assessment procedure. The safety of an actual structure and a full-scale test specimen was assessed by applying the proposed procedure. The conventional assessment procedure significantly overestimated the load-carrying capacity, whereas the proposed procedure resulted in a reasonable level of safety. Therefore, the procedure proposed in this study is expected to contribute to the establishment of proper maintenance plan such as the quantitative condition assessment and strengthening of corrugated steel plate structure. |