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大坝混凝土化学渗透数值模拟

Numerical simulation of dam concrete chemosmosis

中文摘要英文摘要

本文介绍了目前几种二维随机骨料投放方法,并在以往的算法基础上研究了一种新的圆形随机骨料投放算法,以及对圆形骨料进行多边形延凸。文中介绍了在骨料随机投放中采用weibull随机函数分布理论,并选择FULLER曲线确定骨料的级配曲线,以便描述混凝土中的材料不均匀性。对多边形延凸过程中遇到的一些侵入问题给出了应对方法,进而解决骨料多边形高效率延凸问题。最后运用COMSOL软件对生成的混凝土骨料模型进行二维混凝土试件模拟渗透,以尝试考虑材料的不均匀性对混凝土模型渗透性的影响。文中以图的方式给出计算结果,可以直观的看出混凝土试件在高水头渗透作用下的渗流现象。

his paper sums up several ways of 2-D randomly throwing skeletal material presently and studies a new arithmetic of 2-D randomly throwing based on some arithmetic formerly and making the skeletal material into polygon. It gives Weibull random function theory and FULLER curve to make the aggregate into polygon. And then it describes the effect of non-uniform material on the concrete permeability. Some approaching problems of making into polygon appear in simulation. The paper gives some means to solve the approaching problems. Lastly, it implying COMSOL, stimulates 2-D concrete permeability in order to make out the effect of non-uniform material on the concrete permeability. Some results were offered by fig and we can see the seepage flow of concrete sample by the high head pressure.

张羽

水工材料工程基础科学数学

随机骨料模型混凝土渗透OMSOL

random aggregate structureconcreteseepageOMSOL

张羽.大坝混凝土化学渗透数值模拟[EB/OL].(2008-11-26)[2025-08-10].http://www.paper.edu.cn/releasepaper/content/200811-769.点此复制

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