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本文对混凝土面板堆石坝振动台模型试验及动力分析研究的有关成果及存在问题进行了分析和评述 ,报导了我国“九五”国家重点科技攻关专题“强震区面板坝大型振动台模型试验及动力分析”研究中所取得的主要成果和进展 :(1)进行了大量面板坝振动模型试验 ,考虑了模型设计中的多项影响因素 ,研究了各项因素对试验结果的影响 ,得到了模型坝的各项地震反应性状 :(2 )研制了面板坝三维有效应力非线性动力分析方法和计算程序 ,并通过模型试验进行了验证 ;(3)采用割线模量的概念统一静、动力反应和地震残余变形分析 ,开发了等效线性动、静力耦合计算方法和程序 ;(4 )采用等效线性方法对不同模型坝和不同试验方案进行了地震动力反应分析 ,将计算结果与模型试验结果相对比 ,验证和改进了等效线性分析方法 :(5 )根据静、动力特性试验结果 ,探讨了小变形下高、低应力状态土石料应力 -应变关系存在相似性 ,并推导了大型振动台模型试验的相似律 ;(6 )将经过模型试验验证和改进的方法及程序用于具体工程的抗震设计 ,得出了一些有理论和实际使用价值的结论 ,并提出了有效的抗震工程措施
This paper analyzes and comments on the research results and existing problems of shaking table test and dynamic analysis of concrete faced rockfill dam, and reports on the model test of large-scale shaking table of dam panel in strong earthquake area (1) A large number of panel dam vibration model tests were carried out, considering a number of influencing factors in the model design and studying the influence of various factors on the test results, and obtained the results of (2) The nonlinear dynamic analysis method and calculation program of the three-dimensional effective dam of the dam are developed and validated by the model test. (3) The concept of secant modulus is used to unify the static and dynamic forces (4) Equivalent linear method was used to analyze the seismic response of different model dams and different test schemes, and the results were compared with the model Compared with the test results, the equivalent linear analysis method is verified and improved. (5) Based on the static and dynamic test results, The similarities and differences between the stress and strain of soils under high and low stress state under deformation are similar, and the similarity law of the large-scale shaking table model test is deduced. (6) The method and procedure validated and improved by model test are applied to the seismic design of specific engineering , Come to some conclusions of theoretical and practical value, and put forward effective seismic engineering measures