Mechanical effects of excavation rebound of arch dam bedrock and better concreting time of dam body
Mechanical effects of excavation rebound of arch dam bedrock and better concreting time of dam body
复制标题
拱坝基岩开挖回弹力学效应及坝体较好混凝土浇筑时间
DOI:
10.1007/s11431-009-0043-2
复制
发表时间:
2009-02
期刊:
影响因子:
--
通讯作者:
GUO HaiQing
中科院分区:
文献类型:
--
作者:
WU ZhongRu;GU YanChang;SU HuaiZhi;GUO HaiQing
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.
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DOI:
--
发表时间:
1999
期刊:
--
影响因子:
--
作者:
Yuanzhe Zhi
通讯作者:
Yuanzhe Zhi
DOI:
--
发表时间:
2008
期刊:
岩土力学
影响因子:
--
作者:
Gu, Yan-Chang;Guo, Hang-Zhong;Zheng, Dong-Jian;He, Xian-Feng
通讯作者:
He, Xian-Feng
影响因子:
4.6
作者:
Gu Chong-shi;W. Yuan;Su Huaizhi;Tan Lihui
通讯作者:
Gu Chong-shi;W. Yuan;Su Huaizhi;Tan Lihui
DOI:
--
发表时间:
2008
期刊:
水力发电学报
影响因子:
--
作者:
Gu, Yanchang;Jing, Ji;Jin, Yongqiang;Cong, Peijiang
通讯作者:
Cong, Peijiang
DOI:
10.1007/s11431-007-6003-9
发表时间:
2007
期刊:
Science in China Series E: Technological Sciences
影响因子:
--
作者:
Zhongru Wu;Ji Li;C. Gu;H. Su
通讯作者:
Zhongru Wu;Ji Li;C. Gu;H. Su