NDLI: Mechanical effects of excavation rebound of arch dam bedrock and better concreting time of dam body

Content Provider	Springer Nature Link
Author	Wu, ZhongRu Gu, YanChang Su, HuaiZhi Guo, HaiQing
Copyright Year	2009
Abstract	In this study, a nonlinear model is presented for analysis of damage-cracking behavior in arch dams during strong earthquakes using different seismic input mechanisms. The nonlinear system includes a plastic-damage model for cyclic loading of concrete considering strain softening and a contact boundary model of contraction joint opening. Two different earthquake input mechanisms are used for comparison, including massless foundation input model and viscous-spring boundary model considering radiation damping due to infinite canyon. The results demonstrate that effects of seismic input mechanism and radiation damping on nonlinear response and damage-cracking of the dam are significant. Compared with the results of using massless foundation input model, the damage-cracking region and contraction joint opening are substantially reduced when using viscous-spring boundary model to take into account radiation damping. However, if the damping ratio of the dam is artificially increased to about 10%–15% for massless foundation input model, the joint opening and damage-cracking of the dam are comparable to the results obtained from the viscous-spring boundary model.
Starting Page	513
Ending Page	517
Page Count	5
File Format	PDF
ISSN	10069321
Journal	Science in China Series E: Technological Sciences
Volume Number	52
Issue Number	2
e-ISSN	1862281X
Language	English
Publisher	SP Science in China Press
Publisher Date	2009-02-05
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	rebound deformation mechanical effects deformation modulus better concreting time Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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