先期固结压力与现存土层有效覆盖压力之比称为超固结比。根据超固结比的大小可以将土层划分为3种固结状态:正常固结状态、超固结状态和欠固结状态。正常固结土(normal consolidated soil),是指正常固结土在现有自重压力下完全固结。即现有自重压力等于先期固结压力的土。
...相同 s 时,一般OCR越大,土越密实,压缩性越小 5.1 土的压缩性 p 0 = z:自重压力 正常固结土(Normally consolidated Soil): OCR=1 超固结土(Overconsolidated Soil) : OCR>1,OCR愈大,土受 到的超固结作用愈强,在其他条件相同的情况下,其压缩性...
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而当应力水平高于这一临界值时,表现出正常固结土的力学特性。
Mean while, if the stress level is higher than the critical value, marine soft soil shows mechanical property of normally consolidated soil.
计算软土次固结的常用方法没有反映荷载变化的影响,实际上只适用于正常固结土。
The conventional method to compute secondary consolidation of soft soils does not reflect the influence of load. It is only applicable to the normally consolidated soils actually.
本文中建议了一个包含塑性体应变和偏应变两个硬化参数的封闭屈服面模型,可以同时应用于正常固结土和超固结土。
In this paper a double hardening model with two hardening parameters (i. e. plastic volumetric strain and shear strain) and a single smooth yield function has been proposed.
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