碾压混凝土坝层面影响带渐变规律分析模型  

Analysis Model on Gradual Change Principle of Effect Zones of Layer Face for RCCD

作　　者：顾冲时[1] 宋敬衖[1] 方海挺 

机构地区：[1]河海大学水利水电工程学院,南京210098 [2]浙江省水利水电勘测设计院,杭州310002

出　　处：《应用数学和力学》2006年第11期1335-1340,共6页Applied Mathematics and Mechanics

基　　金：国家自然科学基金资助项目(50579010);国家自然科学基金(重点)资助项目(50539010);973计划基金资助项目(2002CB412707);水利部"948"基金资助项目(CT200612)

摘　　要：针对碾压混凝土坝层面影响带具有渐变特性,基于复合材料分析思想,利用串联和并联模型,建立了碾压混凝土坝层面影响带渐变规律分析模型;并根据模型的不同状况,提出了确定层面影响带厚度瞬时弹性模量、延迟弹性模量以及粘性系数等的方法,揭示了决定层面影响带性质的主要计算参数的渐变规律,表征了层面的渐变特性;在上述研究的基础上,建立了相应的三维粘弹性分析模型,研制了相应的各部分分析程序;实例表明,提出的确定层面影响带主要计算参数的方法以及建立的分析模型比较好地反映了碾压混凝土坝的工作性态.The effect zones of layer face for roller compacted concrete dan （RCCD） have gradual changing characteristics. Based on the analysis thought of complex material, a model was built to analyze above principle of RCCD by use of series-wound and shunt-wound connection. Some methods were proposed to determine the instantaneous elastic modulus, delayed elastic modulus and viscosity coefficient of effect zones of layer face. Above models and methods were used to mine the principle of gradual change of key calculation parameters which can respond the characteristics of effect zones. The principle of gradual change was described. A model was established to analyze the three-dimensional viscoelastic problem of RCCD. Above programs were developed. The examples show that the proposed models and methods determining the key calculation parameters of effect zones can reflect the status of RCCD accurately.

关 键 词：碾压混凝土坝 层面影响带 计算参数 渐变规律 粘弹性模型 

分 类 号：TU311.2[建筑科学—结构工程]