恒定主应力偏转角下黏土不排水剪切特性分析

Mechanics in Engineering(2016)

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Abstract
天然土的结构性、各向异性对其强度有影响.进行固结压力100 kPa、主应力轴恒定偏转角为0°,15°,30°,45°,60°的恒定主应力轴偏转角的固结不排水剪切试验,分析了不同恒定主应力轴偏转角对饱和软黏土固结不排水剪切强度影响;推导了总应力控制恒定主应力轴偏转角剪切试验总应力路径,编制了总应力控制剪切三维点积分程序,对比恒定主应力轴偏转角饱和软黏土固结不排水剪切强度计算值与试验结果,表明程序能很好地反应各向异性对土剪切强度影响.
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Key words
constant deflection angle of principal stress axis,undrained shear strength,point integration
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