粘弹塑性冻结壁计算理论研究
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摘要
通过简单应力状态下冻土蠕变试验的研究,得出两淮地区冻土蠕变可以采用维亚洛夫经验本构模型来描述;由应力强度和应变强度等弹塑性力学概念,建立复杂应力状态下冻土的粘弹性蠕变本构方程,并且采用粘弹塑性理论推导了粘弹区和塑粘区冻结壁的扩展规律,论文公式能对冻结壁应力场和位移场进行粘弹塑性分析,为冻结法凿井工程设计提供参考。
From the research on freezing soil creep strain test under the conditions of single axial stress,the Vyalov's experience structure model can be used to describe the creep strains of the freezing soil in Huainan and Huaibei areas.With the stress strength,strain strength and other elastic plastic mechanics,a viscous-elastic creep strain structure formula under the complicated stress conditions was established.With the viscous-elastic-plastic theory,a expansion law of the freezing wall in viscous and plastic area and plastic and viscous area was set up.The paper analyzed the stress field and displacement field of the freezing wall from viscous-elastic-plastic with the formula,which could provide the references to the design of the freezing shaft sinking.
引文
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    [6]汪仁和,李栋伟.莫尔-库仑准则计算冻结壁应力场和位移场[J].工业建筑,2005(10).

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