A calculation method of frost heave effect of lattice beam and anchor composite structure in cold regions

doi:10.13722/j.cnki.jrme.2019.0637

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	A calculation method of frost heave effect of lattice beam and anchor composite structure in cold regions
	Dong, Jianhua 1,2; Liu, Ke 1,2; Dong, Xuguang 1,2; Sun, Guodong 1,2
刊名	Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
	2020-05-01
卷号	39 期号:5 页码:984-995
关键词	Deformation Finite difference method Frozen soils Lattice theory Structure (composition) Calculation formula Calculation models Compound structures Frost heave forces Frost-heaving force Support structures Theoretical calculations Winkler elastic foundation
ISSN号	10006915
DOI	10.13722/j.cnki.jrme.2019.0637
英文摘要	In order to study the variations of the deformation and internal force under frost heave effect of lattice beam and anchor composite structure in cold regions, a calculation model of the composite structure considering frost heave is established basing on Winkler elastic foundation beam theory. Considering coordinated deformation of the soil and the support structure and regarding the frost heave displacement of soil as the superposition of free frost heave and constrained frost heave, a calculation expression of frost heave force is given, and calculation formulas of deformation and internal force of lattice beam under frost heave effect are derived by using the finite difference method. An example is illustrated, and it is shown that the displacement and internal force of the compound structure is very significant while considering frost heave effect, which indicates that the frost heaving force should be considered and enough safety margin should be set aside for the design of permafrost slope supporting projects. Comparisons between the model test results and the theoretical calculation show that the values of displacement and internal force of the lattice beam and the anchor tension are basically consistent as well as their variation trends, which indicates that the calculation method of frost heave effect is reasonable and feasible and provides a new idea for the analysis and design of the compound structure of lattice beam and anchor in frozen soil areas. © 2020, Science Press. All right reserved.
语种	中文
出版者	Academia Sinica
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150711]
专题	土木工程学院
作者单位	1.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China 2.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China;
推荐引用方式 GB/T 7714	Dong, Jianhua,Liu, Ke,Dong, Xuguang,et al. A calculation method of frost heave effect of lattice beam and anchor composite structure in cold regions[J]. Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,2020,39(5):984-995.
APA	Dong, Jianhua,Liu, Ke,Dong, Xuguang,&Sun, Guodong.(2020).A calculation method of frost heave effect of lattice beam and anchor composite structure in cold regions.Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering,39(5),984-995.
MLA	Dong, Jianhua,et al."A calculation method of frost heave effect of lattice beam and anchor composite structure in cold regions".Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering 39.5(2020):984-995.