如果在某个斜面上只有正应力,没有剪应力,则这个斜面称为主平面,相应的正应力称为叫主应力,相应的方向就叫主方向。最大主应力就某个单元中最大的主应力,即,第一主应力。这个概念很重要,因为做结构设计时,有时是以主应力为设计指标。
The Maximum principal stress equal to Vertical stress approximately, which makes an angle of about 11.9°to 14.25°with the shaft axis.
最大主应力约等于竖向应力,与井筒轴向夹角为11.9°~14.25°。
参考来源 - 立井井壁温度应力三维数值模拟分析·2,447,543篇论文数据,部分数据来源于NoteExpress
统计分析表明:中间主应力一般可使最大主应力的强度极限增大30%。
The statistical analysis shows that the intermediate main stress can generally make the maximum main stress increase 30%.
洞室地应力以构造应力为主,其最大主应力方向与厂房轴线方向近垂直。
The cave's initial principal stress is tectonic stress, and the Max main stress's direction is perpendicular to the power house's stalk line.
分析结果表明,考虑蠕变效应,心墙的水平变形与最大主应力将有较大的增加。
Results show that the displacement in horizontal direction and the maximum principal stress of core wall will increase to a larger extent if the creep effect of asphalt concrete is considered.
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