Characteristic analysis of full-length grouted anchor in slope under free vibration

	Characteristic analysis of full-length grouted anchor in slope under free vibration
	Duan, Jian; Yan, Zhixin; Liu, Zizhen
刊名	土木工程学报
	2015-11-01
卷号	48 期号:11 页码:111-118
关键词	全长黏结锚杆自由振动阻尼特征参数固有频率振型
ISSN号	1000-131X
其他题名	边坡全长黏结锚杆自由振动特性分析
文献子类	Article
英文摘要	Anchor and its surrounding rock/soil mass are assumed as continuous homogeneous linear elastic materials. The interaction between anchoring section and its surrounding rock/soil mass is simulated using the Kelvin-Voigt model by coupling a purely viscous damper and a purely elastic spring in parallel. According to the assumptions, the dynamic mechanical model was established for the full-length grouted anchor in slope under free vibration. The calculation formulas of characteristic parameter λ and the corresponding vibration mode for anchorage system were deduced. Compared to another method for the continuous model of anchorage system, the feasibility of the present theoretical calculation formulas was verified based on a specific example. It was found that the vibration control equation for the full-length grouted anchor in slope can only be less than zero, the vibration functions can be categorized into three types, which all correspond to the trigonometric functions and follow the aperiodic peristalsis in accordance with exponential attenuation. The smallest characteristic parameter λ of order I corresponds to the type (2) mode of vibration, and after that, the vibration types (1) and (2) may appear alternately, but the attenuation characteristics of type (1) is more obvious than that of type (2). Nevertheless, the type (3) mode happens only when the physical and mechanical parameters of anchorage system meet certain conditions. Among those characteristic parameters λ, the ones corresponding to type (2) mode of vibration have greater influences on the dynamic mechanical response of anchorage system, especially for order I. Therefore, it is of great theoretical and practical significance to carry out the characteristic analysis of full-length grouted anchor in slope under free vibration. The research can provide theoretical support for the dynamic analysis of slope anchorage system and for the disaster mitigation in anchorage engineering. ©, 2015, Editorial Office of China Civil Engineering Journal. All right reserved.
学科主题	Construction Methods ; Structural Members And Shapes ; Concrete ; Mechanics
出版地	Beijing
资助项目	国家自然科学基金项目
项目编号	国家自然科学基金 ; 浙江省自然科学基金
语种	中文
CSCD记录号	CSCD:5557731
资助机构	NSFC
内容类型	期刊论文
源URL	[http://ir.lzu.edu.cn/handle/262010/182469]
专题	土木工程与力学学院_期刊论文
推荐引用方式 GB/T 7714	Duan, Jian,Yan, Zhixin,Liu, Zizhen. Characteristic analysis of full-length grouted anchor in slope under free vibration[J]. 土木工程学报,2015,48(11):111-118.
APA	Duan, Jian,Yan, Zhixin,&Liu, Zizhen.(2015).Characteristic analysis of full-length grouted anchor in slope under free vibration.土木工程学报,48(11),111-118.
MLA	Duan, Jian,et al."Characteristic analysis of full-length grouted anchor in slope under free vibration".土木工程学报 48.11(2015):111-118.