选取一篇博士论文阅读：
文献报告： 1、阅读1-n篇相关文献； 2、文献报告核心内容：1）研究背景，研究内容（步骤），创新点描述（重点）； 2）、对本人专业学习或研究课题的启发。
1篇文献belongs to 1-n 篇相关文献 阅读时间：2019/10/31 12:00——18:00，整六个小时
研究背景：土工织物在各个岩土工程中发挥越来越多重要的作用，研究土工织物在各种地基（刚性，柔性），以及各种工作状态下（单层，双层，加载）的受力情况和变形是非常有必要的。 研究内容：郭在他的博士论文从理论，试验，数值三个部分进行了分析，其中对我们有帮助的为理论部分的所有内容以及试验和数值方法的描述方式。 创新点描述（仅描述我们关心的部分）： 从理论上推导了双层堆叠的土工袋的受力计算公式，并进行了试验和数值验证。具体内容不在此处叙述。
对我的启发，在接下来的内容中详细记载，摘录了对我有帮助的表格和公式，以及记录了需要精读的章节。
在这些所有的方法中，比较关心的是在刚性地基上的计算，和我们所研究的内容比较相近。
All the theoretical derivations of impermeable geosynthetic tube were made based on the assumptions that the tensile forces along the whole cross-section were constant. However, this assumption is only valid when the friction between geosynthetic sheets and foundation are neglected. Theoretical studies to consider the frictions between tubes and ground should be carried out. Experimental studies on the influence of the interface friction on the design of geosynthetic tube or mat should also be carried out. One way is to compare the behavior of two identical tubes, but one with rough interface with the base and another with relatively smooth base.
Geosynthetic tube
The difference between the results obtained from the proposed method and the solutions of Leshchinsky’s (1996) and Kazimirowicz’s (1994) is less than 5%. The cross-sections obtained from the proposed method agree well with those from model test results. The comparisons between the analytical and model test results indicate that the tensile forces measured at the bottom corner from the model tests are slightly higher than those from analytical solutions due to the influence from bending of strain gauges. The tensile forces along the contact surface with ground obtained from model tests are smaller than those from analytical solutions because of the influence of frictions between geosynthetic sheets and concrete floor.When the height and width are normalized perimeter of cross-section, the normalized height or width versus the normalized pumping pressure curve becomes unique. The normalized height decreases at a faster rate when the normalized pumping pressure is less than 0.2.A closed-form solution was also derived for the calculation of geosynthetic tube resting on rigid foundation based on some approximations. The equations in these approximated equations express relationships between the geometry parameters and the factor of pumping pressure which make it possible to establish a series of basic charts for all the geometry parameters such as the contact width with ground, b, the width, B, height, H, perimeter, L, and area, A, of cross-section of a geosynthetic tube. With these design charts, the tensile force along the tube, T, and geometry parameters, b, L, B, A, can be calculated. The calculation can be implemented by using Microsoft Office Excel. Although this method is not as accurate as the computer program, it is convenient to be used for geosynthetic tube design when sophisticated software is not available.Chap 2 2.2，2.3，2.4，2.6 Chap 4 4.1 4.2 4.3 其余所有的部分，均只借鉴表达方式和描述方法。可以得到一个自己的推导公式或者推导过程，推导完成之后会继续写在这里。
暂时，到此为止。手动分割线===================================================
