Angle of repose of cohesionless soils test 室内土工试验无粘性土天然坡角试验
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Soils : investigation and testing - determination of minimal and maximal density of cohesionless soils 土壤.调查与试验.砂性土最大和最小密度测定
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Hsu , s . t . , “ a constitutive model for the uplift behavior of anchors in cohesionless soils ” journal of the chinese institute of engineers , vol . 28 , no . 2 , pp . 305 ~ 317 , 2005 许世宗和郭芷伶沈泥质砂土中锥形扩座地锚锚碇行为之影响参数研究,朝阳学报,第六期,第375 - 401页, 2001 。
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Abstract : on the basis of general principles of mechanics and critical state soil mechanics theory , a theoretical formula determining the coefficient of earth pressure at rest for cohesionless soil is derived by means of combining hypoplasticity with critical state soil mechanics . the formula has a simple form and is only related to the effective angle of internal friction of soil . there is a slight difference between the calculated value of the formula and that of other formulae . the further investigation of the formula shows that it can be used to determine the coefficient of earth pressure at rest of cohesionless soil 文摘:在满足一般力学原理和临界状态土力学理论的基础上,本文将亚塑性理论与临界状态土力学相结合,推出了一个计算无粘性土静止土压力系数的理论公式.该公式形式简单,仅与土的有效内摩擦角有关,其计算结果与常见的多个经验公式的计算结果只有微小的差别.文中讨论结果表明,该公式可用于确定无粘性土的静止土压力系数
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In the last part , we researched the bending strength of post - tensioned and cohesionless cfrp tendon concrete beams . in this part we summarized the performance of bearing , deflection and crack of the beams . at the same time , we introduced the research about the anchorage device and the prestressing loss 另外,在试验分析的基础上,我们运用有限元分析软件ansys对碳纤维塑料筋普通混凝土梁在三分点竖向荷载作用下的受力状况进行了模拟,得出了详细的计算结果。