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Numerical Simulation of Steel Corrugated Pipe Culvert Backfilled with foam Concrete
In order to understand the mechanical characteristics of foam concrete backfill steel corrugated pipe culvert, this paper uses numerical simulation to analyze the mechanical characteristics of foam concrete and pipe culvert structures with different backfill methods. The results show that when using 800kg/m3 foam concrete for backfilling, the foam concrete will fail when the filling height reaches 20~30m; However, when the filling height reaches 30~40m, the foam concrete will be damaged and become invalid. When the steel corrugated pipe culvert is backfilled as a whole, the vertical soil pressure on the culvert top shows a “W” - shaped distribution; When backfilling in layers, the vertical soil pressure on the culvert roof shows an “M” - shaped distribution. The stress distribution of steel corrugated pipes is manifested as tensile stress on the side of the pipe away from the center of the culvert, and compressive stress on both the top and bottom of the pipe, with the maximum compressive stress occurring at the top of the pipe; When the filling height is 20m, the maximum compressive stress of the layered backfilled steel corrugated pipe is -210.17MPa, and the maximum compressive stress of the overall backfilled steel corrugated pipe is -140.84MPa. There is stress concentration on the side of the steel corrugated pipe near the center of the culvert during layered backfilling.
Numerical Simulation of Steel Corrugated Pipe Culvert Backfilled with foam Concrete
In order to understand the mechanical characteristics of foam concrete backfill steel corrugated pipe culvert, this paper uses numerical simulation to analyze the mechanical characteristics of foam concrete and pipe culvert structures with different backfill methods. The results show that when using 800kg/m3 foam concrete for backfilling, the foam concrete will fail when the filling height reaches 20~30m; However, when the filling height reaches 30~40m, the foam concrete will be damaged and become invalid. When the steel corrugated pipe culvert is backfilled as a whole, the vertical soil pressure on the culvert top shows a “W” - shaped distribution; When backfilling in layers, the vertical soil pressure on the culvert roof shows an “M” - shaped distribution. The stress distribution of steel corrugated pipes is manifested as tensile stress on the side of the pipe away from the center of the culvert, and compressive stress on both the top and bottom of the pipe, with the maximum compressive stress occurring at the top of the pipe; When the filling height is 20m, the maximum compressive stress of the layered backfilled steel corrugated pipe is -210.17MPa, and the maximum compressive stress of the overall backfilled steel corrugated pipe is -140.84MPa. There is stress concentration on the side of the steel corrugated pipe near the center of the culvert during layered backfilling.
Numerical Simulation of Steel Corrugated Pipe Culvert Backfilled with foam Concrete
Advances in Engineering res
Zhang, Yu (editor) / Li, Dayong (editor) / Zhang, Yukun (editor) / Luan, Yalin (editor) / Li, Pei-Yuan (author) / Yu, Ben-Tian (author) / Feng, Yuan (author) / Li, Sheng (author) / Jia, Bao-Ping (author) / Cai, Yu-Ting (author)
International Conference on Architectural, Civil and Hydraulic Engineering ; 2024 ; Shenyang, China
2025-03-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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