Influence of filling properties and culvert structure parameters on the soil arching effect of upper-buried-type culverts
A high fill load may lead to several defects in culvert structures. Therefore, it is necessary to accurately calculate the earth pressure at the top of a culvert and the coefficient of earth pressure in fillings. In this paper, a numerical model is proposed to accurately calculate the earth pressure...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-03-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379719324908 |
| _version_ | 1811222852534272000 |
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| author | Qingdong Tao Zhaoyi He Ying Jia |
| author_facet | Qingdong Tao Zhaoyi He Ying Jia |
| author_sort | Qingdong Tao |
| collection | DOAJ |
| description | A high fill load may lead to several defects in culvert structures. Therefore, it is necessary to accurately calculate the earth pressure at the top of a culvert and the coefficient of earth pressure in fillings. In this paper, a numerical model is proposed to accurately calculate the earth pressure at the top of upper-buried culverts and the coefficient of earth pressure in the filling. First, indoor model tests were used to determine the earth pressure at the top of a culvert at different filling heights, and the theoretical soil arch coefficient calculation equation derived. Then, the numerical model was calibrated and its accuracy verified by comparing experimental and numerical simulation results. The effects of filling height, rock block proportion, filling Poisson's ratio, and slab thickness on the top and sides of the culvert were also analyzed. The results show that all factors will affect the earth pressure at the top and sides of the culvert. Further, the vertical earth pressure is parabolic on the top of the culvert, which can be explained by the shear lag effect of a symmetrical cantilever hollow box girder. The results of this study can be used as a reference for optimum design of culverts with high filling, and to reduce the occurrence of culvert accidents. |
| first_indexed | 2024-04-12T08:21:53Z |
| format | Article |
| id | doaj.art-31f4d5a259574b899c8cd4dcf41abd99 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-12T08:21:53Z |
| publishDate | 2020-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-31f4d5a259574b899c8cd4dcf41abd992022-12-22T03:40:31ZengElsevierResults in Physics2211-37972020-03-0116103003Influence of filling properties and culvert structure parameters on the soil arching effect of upper-buried-type culvertsQingdong Tao0Zhaoyi He1Ying Jia2School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China; Department of Architectural Engineering, Mianyang Polytechnic, Mianyang, Sichuan 621000, China; Corresponding author at: School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China; Guizhou Transportation Planning Survey & Design Academe Co. Ltd, Guiyang, Guizhou 550000, ChinaA high fill load may lead to several defects in culvert structures. Therefore, it is necessary to accurately calculate the earth pressure at the top of a culvert and the coefficient of earth pressure in fillings. In this paper, a numerical model is proposed to accurately calculate the earth pressure at the top of upper-buried culverts and the coefficient of earth pressure in the filling. First, indoor model tests were used to determine the earth pressure at the top of a culvert at different filling heights, and the theoretical soil arch coefficient calculation equation derived. Then, the numerical model was calibrated and its accuracy verified by comparing experimental and numerical simulation results. The effects of filling height, rock block proportion, filling Poisson's ratio, and slab thickness on the top and sides of the culvert were also analyzed. The results show that all factors will affect the earth pressure at the top and sides of the culvert. Further, the vertical earth pressure is parabolic on the top of the culvert, which can be explained by the shear lag effect of a symmetrical cantilever hollow box girder. The results of this study can be used as a reference for optimum design of culverts with high filling, and to reduce the occurrence of culvert accidents.http://www.sciencedirect.com/science/article/pii/S2211379719324908Slab culvertTest modelingCoefficient of earth pressureNumerical simulationShear lag effectSoil-rock mixture (SRM) |
| spellingShingle | Qingdong Tao Zhaoyi He Ying Jia Influence of filling properties and culvert structure parameters on the soil arching effect of upper-buried-type culverts Results in Physics Slab culvert Test modeling Coefficient of earth pressure Numerical simulation Shear lag effect Soil-rock mixture (SRM) |
| title | Influence of filling properties and culvert structure parameters on the soil arching effect of upper-buried-type culverts |
| title_full | Influence of filling properties and culvert structure parameters on the soil arching effect of upper-buried-type culverts |
| title_fullStr | Influence of filling properties and culvert structure parameters on the soil arching effect of upper-buried-type culverts |
| title_full_unstemmed | Influence of filling properties and culvert structure parameters on the soil arching effect of upper-buried-type culverts |
| title_short | Influence of filling properties and culvert structure parameters on the soil arching effect of upper-buried-type culverts |
| title_sort | influence of filling properties and culvert structure parameters on the soil arching effect of upper buried type culverts |
| topic | Slab culvert Test modeling Coefficient of earth pressure Numerical simulation Shear lag effect Soil-rock mixture (SRM) |
| url | http://www.sciencedirect.com/science/article/pii/S2211379719324908 |
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