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| 1 | 混凝土面板坝面板动力损伤有限元分析显示文摘联合采用混凝土塑性损伤模型和堆石料弹塑性本构模型,建立了面板堆石坝弹塑性动力分析方法,研究了地震荷载作用下混凝土面板的损伤发生和发展过程。计算结果表明:地震时,在0.65H(H为坝高)附近顺坡向拉应力最大,面板首先在该部位出现损伤,同时由于鞭稍效应,0.85H面板附近也出现损伤;采用损伤模型,损伤部位的面板出现软化,应力得到释放,计算结果比线弹性模型更加合理;采用塑性损伤模型可以反映混凝土面板渐进破坏过程,通过损伤变量可以清晰地了解面板的损伤分布和薄弱环节。此研究成果可以为进一步开展混凝土面板堆石坝极限抗震能力及抗震措施分析提供有效手段。 | 孔宪京 徐斌 邹德高 单其宽 胡志强 | 2014 | 岩土工程学报2014，36，9： | 12 |
| 2 | Seismic safety of high concrete dams显示文摘China is a country of high seismicity with many hydropower resources. Recently,a series of high arch dams have either been completed or are being constructed in seismic regions,of which most are concrete dams. The evaluation of seismic safety often becomes a critical problem in dam design. In this paper,a brief introduction to major progress in the research on seismic aspects of large concrete dams,conducted mainly at the Institute of Water Resources and Hydropower Research(IWHR) during the past 60 years,is presented. The dam site-specific ground motion input,improved response analysis,dynamic model test verification,field experiment investigations,dynamic behavior of dam concrete,and seismic monitoring and observation are described. Methods to prevent collapse of high concrete dams under maximum credible earthquakes are discussed. | Chen Houqun | 2014 | Earthquake Engineering and Engineering Vibration2014，13，S1： | 3 |
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