Seismic response of permafrost slopes supported by the thermal anchor pipe frame: Theoretical analysis and shaking table test verification

doi:10.1016/j.soildyn.2024.108573

IR > 土木工程学院

	Seismic response of permafrost slopes supported by the thermal anchor pipe frame: Theoretical analysis and shaking table test verification
	Wu, Xiaolei 1,2; Dong, Jianhua1,2 ; He, Pengfei1,2,3 ; Wang, Lu 1,2; Su, Shilin 1,2
	2024-05
发表期刊	Soil Dynamics and Earthquake Engineering
ISSN	0267-7261
卷号	180
摘要	To study the seismic response of the thermal anchor pipe frame supporting permafrost slope system, the coupled dynamic interaction model of the permafrost slope with the thermal anchor pipe frame in thawing and freezing periods was established by taking into account the stratification characteristics of the permafrost slope in different typical seasons, respectively. Based on D'Alembert's principle and Dirac's function, the coupled vibration equilibrium differential equations are given and the seismic response of the system is analyzed for different periods. The reliability of the proposed model was further verified through shaking table tests. The results show that the acceleration response at different positions during both freezing and thawing periods is similar to the initial loading seismic wave shape. The peak acceleration and velocity during the thawing period is greater than that during the freezing period. The shear force and bending moment of the frame column are distributed alternately positive and negative along its height. The incremental dynamic shear force and bending moment are greater during the thawing period. However, the peak bending moments and shear forces are greater during the freezing period when the combined effects of frost and earthquakes. The peak bending moment occurs at the position of the first layer of the thermal anchor pipe, and the shear force suddenly changes near the thermal anchor pipe. In seismic design, attention should be paid to checking the internal force of the frame column during the freezing period to prevent plastic bending failure. The results contribute to further understanding the dynamic interaction mechanism of the thermal anchor pipe frame permafrost slope system, which has important practical significance for its seismic resistance. © 2024 Elsevier Ltd
关键词	Acceleration Bending moments Differential equations Ductile fracture Freezing Permafrost Seismic design Shear flow Thawing Vibration analysis Calculation models Dynamic calculation model Dynamics calculations Permafrost slope Shaking table tests Shear force Slope system Thawing period Thermal Thermal anchor pipe frame
DOI	10.1016/j.soildyn.2024.108573
收录类别	EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20241315811298
EI主题词	Seismic response
EI分类号	408 Structural Design ; 408.2 Structural Members and Shapes ; 484.2 Secondary Earthquake Effects ; 484.3 Earthquake Resistance ; 631.1 Fluid Flow, General ; 921.2 Calculus
原始文献类型	Journal article (JA)
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/170289
专题	土木工程学院理学院
通讯作者	Dong, Jianhua
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; 3.State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Gansu, Lanzhou; 730000, 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
通讯作者单位	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	Wu, Xiaolei,Dong, Jianhua,He, Pengfei,et al. Seismic response of permafrost slopes supported by the thermal anchor pipe frame: Theoretical analysis and shaking table test verification[J]. Soil Dynamics and Earthquake Engineering,2024,180.
APA	Wu, Xiaolei,Dong, Jianhua,He, Pengfei,Wang, Lu,&Su, Shilin.(2024).Seismic response of permafrost slopes supported by the thermal anchor pipe frame: Theoretical analysis and shaking table test verification.Soil Dynamics and Earthquake Engineering,180.
MLA	Wu, Xiaolei,et al."Seismic response of permafrost slopes supported by the thermal anchor pipe frame: Theoretical analysis and shaking table test verification".Soil Dynamics and Earthquake Engineering 180(2024).