【摘要】 :研究了采用粉煤灰作为排水垫层筑坝的可行性 .先根据初步试验结果对各种粒径粉煤灰的渗透性及抗液化强度进行分析 ,配制了符合抗液化要求的粉煤灰 .在此基础上 ,对粉煤灰进行了大量的动力特性试验研究 ,提出了该类粉煤灰相应的动模量及阻尼比的计算公式并给出其抗液化强度、动孔隙水压力及动残余应变的计算公式及其参数 .研究表明 ,7°地震烈度条件下用该类粉煤灰代替砂作为排水垫层筑坝是可行的更多还原

【Abstract】 For the study of possibility of using flyash as the drainage blanket of dams, based on laboratory test results, the liquefaction strength of several sizes of flyash are analyzed, and furthermore, the sample that can be satisfied with liquefaction strength is chosen firstly. Then, based on a large number of static and dynamic laboratory test results, the calculation formulation on dynamic modules of shear deformation, damping ratio, dynamic pore water pressure, dynamic residual deformation are proposed, the parameters of these formulations are also given. Combining test results with dynamic analysis, the study shows that it is feasible to use flyash as the drainage blanket of dams.更多还原