Internal force analysis of external prestress cable of tilted belly poles

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	Internal force analysis of external prestress cable of tilted belly poles
	Song, Yu 1,2; Wang, Yong-Jie 2; Li, Ai-Peng 1
刊名	Gongcheng Lixue/Engineering Mechanics
	2011-05-01
卷号	28 期号:5 页码:143-148
关键词	Deformation Horizontal wells Iterative methods Poles Prestressed beams and girders Reinforcement External prestress Internal force analysis Non-linear relationships Prestressed reinforcement Reinforcement technique Simply supported beams Stress characteristics Structure reinforcement
ISSN号	10004750
英文摘要	Based on traditionally external prestressed reinforcement approaches, the paper proposes a new reinforcement technique, external prestressed cable of tilted belly poles. Taking the simply-supported beam as the object to be reinforced, the cable behavior is modeled. The formulas for the cable deformation and tension forces are obtained. The relations between cable deformation, tension forces and the applied load are investigated in this paper, showing that: (1) the cable configuration is of the form of ellipse; (2) the maximum horizontal tension force of the cable occurs at the mid-span of the simply-supported beam, and the minimum horizontal force occurs at the anchor point. Such a stress characteristic makes fully use of the cable advantage of high tensile capacity, as well as reduces the unfavorable effects of cable horizontal force on the beam. Under the action of the radial uniform load, the nonlinear relationship between the cable length incensement and the deflection incensement is observed. The iterative calculation algorithm prefers small load-step, the smaller the load-step, the higher the precision.
语种	中文
出版者	Tsinghua University
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111323]
专题	兰州理工大学土木工程学院
作者单位	1.Northwest Center for Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou 730050, China 2.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China;
推荐引用方式 GB/T 7714	Song, Yu,Wang, Yong-Jie,Li, Ai-Peng. Internal force analysis of external prestress cable of tilted belly poles[J]. Gongcheng Lixue/Engineering Mechanics,2011,28(5):143-148.
APA	Song, Yu,Wang, Yong-Jie,&Li, Ai-Peng.(2011).Internal force analysis of external prestress cable of tilted belly poles.Gongcheng Lixue/Engineering Mechanics,28(5),143-148.
MLA	Song, Yu,et al."Internal force analysis of external prestress cable of tilted belly poles".Gongcheng Lixue/Engineering Mechanics 28.5(2011):143-148.