Sciences in Cold and Arid Regions ›› 2015, Vol. 7 ›› Issue (5): 587–593.doi: 10.3724/SP.J.1226.2015.00587
• ARTICLES • 上一篇
Determination of allowable subgrade frost heave with the pavement roughness index in numerical analysis
HongYan Ma, Feng Zhang, DeCheng Feng, Bo Lin
- School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China
Determination of allowable subgrade frost heave with the pavement roughness index in numerical analysis
HongYan Ma, Feng Zhang, DeCheng Feng, Bo Lin
- School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150090, China
摘要： Frost heave is an upward swelling of soil during cryogenic conditions in cold regions. It is caused by the accumulation of ice crystals in subgrade soil, which grow upwards when freezing temperatures penetrate into the subgrade. This study establishes the allowable soil subgrade frost heave based on the roughness standard of asphalt pavement in China, and aims to balance the pavement design and frost heave resistance of subgrades in cold regions. We formulated a mechanical model of pavement supported by the boundary conditions of differential frost heave, based on the elastic layered system theory. The differential soil subgrade frost heave was modeled as a sinusoidal function, and the allowable frost heave and the roughness index were modeled as the displacement boundaries for the top and bottom of the pavement structure. Then the allowable frost heave was back-calculated according to the roughness standard. Numerical results show that the allowable frost heave depends on the pavement structure, material properties, the highway grade, and other factors. In order to ensure that the actual soil subgrade frost heave is lower than the allowable frost heave, pavement structures and materials need to be selected and designed carefully. The numerical method proposed here can be applied to establish the frost heave resistance of subgrade when the pavement structure and materials are determined.
| Chen XH, He ZY, 2008. A study on simulation of road roughness based on international roughness index. Highway, 11: 155-160. Deng WD, Zhang XQ, Chen B, et al., 2004. Nonlinear FEM analysis of influence of asphalt pavement under non-homogeneous settlement of roadbed. China Journal of Highway and Transport, 1: 16-19. Dore G, 2002. Cold region pavements. Journal of Glaciology and Geocryology, 24(5): 593-600. Gao ZL, 2008. Analysis of the impact of subgrade differential settlement to above ground part of the frame structure. M.S. Dissertation of Wuhan Technology University, Hubei, China. Liu C, Zheng G, 2004. Analysis of the influence of ground unequal settlement on the structure with elastic support model method. Journal of Building Structures, 4: 124-128. Ma YJ, 2013. Experimental study for the bearing behavior of super frame structure based on foundation's unequal settlement. M.S. Dissertation of Jinan University, Jinan, Shandong, China. Mulungye RM, Owende PMO, Mellon K, 2007. Finite element modelling of flexible pavements on soft soil subgrades. Materials and Design, 28(3): 739-756. DOI: 10.1016/j.matdes.2005.12.006. Research Institute of Highway Ministry of Transport, 2008. Field Test Methods of Subgrade and Pavement for Highway Engineering (JTG E60-2008). Beijing: China Communications Press, pp. 38-40. Shi GQ, 2008. Research on frost heave in subgrade of high-speed railway in cold regions and its engineering countermeasures. M.S. Dissertation of Lanzhou University, Gansu, China. Sun CL, 2014. The performance analysis of multi-frame structure in crack uneven settlement. M.S. Dissertation of Chang'an University, Xi'an, Shaanxi, China. Tian YH, 2008. The experimental study on moisture migration and frost action of fine-grained soils during freezing under dynamic and static loading. Ph.D. Dissertation of Beijing Jiaotong University, Beijing. Wu QX, Chen BC, Xi LZ, 2008. Comparison of PSD method and IRI method for road roughness evaluation. Journal of Traffic and Transportation Engineering, 1: 36-41. Wu RL, Fan JS, Yan CQ, et al., 2012. Emulation on asphalt pavement structure of widened subgrade under different settlement patterns. Journal of Huazhong University of Science and Technology (Natural Science Edition), 9: 76-80. Wu SF, Sun ZY, 2005. The influences on deformation and internal force of the superstructure caused by ground unequal settlement. Journal of Guangzhou University (Natural Science Edition), 3: 261-266. Zhai Y, Wang GL, 2014. Control standard of differential settlement base on interaction between pavement and subgrade. Journal of Highway and Transportation Research and Development (Applied Technology Edition), 3: 91-94. Zhang JF, Zhang HM, 2003. Additional stress in pavement structure due to asymmetrical settlement of soft subgrade. Journal of Chang'an University (Natural Science Edition), 3: 21-25. Zheng ZC, He SQ, Wu FQ, 2012. Relationship between soil surface roughness and hydraulic roughness coefficient on sloping farmland. Water Science and Engineering, 5(2): 191-201. DOI: 10.3882/j.issn.1674-2370.2012.02.007. Zhong L, 2012. Research on calculation of highway subgrade settlement and influence of subgrade uneven settlement on pavement structure. M.S. Dissertation of Central South University, Changsha, Hunan, China. Zhu XL, 2002. Influence of differential settlement of soft subgrade on pavement performance of Chengdu rounding highway. M.S. Dissertation of Southwest Jiaotong University, Chengdu, Sichuan, China. |
| [1] | Tuncer B. Edil, Bora Cetin, Ali Soleimanbeigi. Laboratory and field performance of recycled aggregate base in a seasonally cold region[J]. Sciences in Cold and Arid Regions, 2017, 9(3): 183-191. |
|
||