Proposal of the permafrost slope supporting structure with framed unpowered acceleration convection anchor and its theoretical calculation method

IR > 土木工程学院

	Proposal of the permafrost slope supporting structure with framed unpowered acceleration convection anchor and its theoretical calculation method
	Dong, Jianhua1,2 ; Bao, Wanfei 1,2
	2021
发表期刊	Tumu Gongcheng Xuebao/China Civil Engineering Journal
ISSN	1000131X
卷号	54 期号:1 页码:116-133
摘要	Aiming at the problem of freeze-thaw collapse of permafrost slope, a permafrost slope supporting structure with framed unpowered acceleration convection anchor was proposed by adopting unpowered ventilation technology, air-duct cooling technology and anchoring technology, and then its work mechanism was elaborated.Based on the theories of heat transfer and ventilation engineering, the calculation model of heat transfer between unpowered acceleration convection anchor and soil was established.Besides, a theoretical calculation method for the thermal effect of unpowered acceleration convection anchor was developed.Based on the Winkler elastic foundation beam model, a calculation model of cooperation between the supporting structure with framed unpowered acceleration convection anchor and soil was established.Furthermore, a theoretical calculation method for the mechanical effect of the permafrost slope supporting structure with framed unpowered acceleration convection anchor was proposed.Based on the calculation examples, the thermo-mechanical effect of the permafrost slope supporting structure with framed unpowered acceleration convection anchor was analyzed by the proposed theoretical calculation method, which was then verified by the Moisture-Heat-Stress Coupled Analysis Software.The results showed that: The unpowered hood greatly enhances the ventilation of unpowered acceleration convection anchor, increases the heat transfer between the cold air and the soil, and then the freeze-thaw interface of the permafrost slope rises year by year; the new structure can weaken the frost heaving effect of the slope soil and improve the stability of the permafrost slope; The theoretical calculation method has been proved to be accurate and reasonable, and it can provide a theoretical basis for the design of permafrost slope supporting structure with framed unpowered acceleration convection anchor. © 2021, Editorial Office of China Civil Engineering Journal. All right reserved.
关键词	Freezing Heat transfer Permafrost Slope stability Thawing Ventilation Anchoring technology Calculation models Cooling technology Supporting structure Theoretical calculations Thermo-mechanical effects Ventilation engineering Winkler elastic foundation
收录类别	EI
语种	中文
出版者	Chinese Society of Civil Engineering
EI入藏号	20210609878611
EI主题词	Acceleration
EI分类号	406.2 Roads and Streets - 641.2 Heat Transfer - 643.5 Ventilation
来源库	Compendex
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/147187
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	甘肃省土木工程防灾减灾重点实验室; 土木工程学院
第一作者的第一单位	甘肃省土木工程防灾减灾重点实验室
推荐引用方式 GB/T 7714	Dong, Jianhua,Bao, Wanfei. Proposal of the permafrost slope supporting structure with framed unpowered acceleration convection anchor and its theoretical calculation method[J]. Tumu Gongcheng Xuebao/China Civil Engineering Journal,2021,54(1):116-133.
APA	Dong, Jianhua,&Bao, Wanfei.(2021).Proposal of the permafrost slope supporting structure with framed unpowered acceleration convection anchor and its theoretical calculation method.Tumu Gongcheng Xuebao/China Civil Engineering Journal,54(1),116-133.
MLA	Dong, Jianhua,et al."Proposal of the permafrost slope supporting structure with framed unpowered acceleration convection anchor and its theoretical calculation method".Tumu Gongcheng Xuebao/China Civil Engineering Journal 54.1(2021):116-133.