| 1. | A valid method to make the anisotropic deformation behavior of load bearing unit clear is to research principal stress and principal strain relationship , and true triaxial test is a necessary means
弄清受荷单元的主应力主应变关系是认识各向异性变形性状的有效方法，而真三轴试验是必要的手段。 |
| 2. | Numerical simulation of foundation deformation under asymmetrical loading with the finite element method was performed by use of the cam - clay model and the ohta - sekiguchi model
摘要用剑桥模型和关口太田模型对偏载作用下的地基变形进行了有限元数值模拟，并结合真三轴试验成果比较分析了这2种模型柔度矩阵的特点。 |
| 3. | It is suggested that the true triaxial test under different stress paths should be performed to derive reasonable anisotropic yield criterion and further to develop nonlinear anisotropic elastic - plastic constitutive model
建议通过复杂应力条件下不同应力路径的真三轴试验，建立合理的各向异性屈服准则，进而建立各向异性非线性弹塑性模型。 |
| 4. | Former true triaxial test research have been lack of the completely study on soil anisotropic deformation characteristic on condition that load in each of the tree principal stress direction because of their different research purpose
由于研究目的不同，以往真三轴试验研究中缺乏针对三主应力单向加荷时的土体各向异性变形特性较全面的研究。 |
| 5. | The research of that problem is restricted by test means besides its intrinsic complicacy . it is difficult for soil anisotropic deformation characteristic to be studied without true triaxial apparatus and true triaxial test
该问题的研究除了本身比较复杂以外，还受土工测试手段限制较大，若没有真三轴仪和相应的真三轴试验，分析研究土体各向异性变形特性就较困难。 |
| 6. | Although true triaxial apparatus is unpopular so far , hohai university has recently designed and manufactured a set of new style true triaxial apparatus , which provides this paper with essential condition to study soil anisotropic deformation characteristic
尽管真三轴仪不普及，但河海大学新近研制了新型真三轴仪，使得本文具备了试验研究土体各向异性变形特性的必要条件。 |
| 7. | Secondly , true taixial test by load in three different principal stress direction for study on soil anisotropic deformation characteristic are processed . lateral deformation relative to load direction , lateral deformation relative to lateral direction and the stess - strain relationship in load direction are analyzed , and soil anisotropic deformation characteristic on the three aspects of elastic ratio , poisson " s ratio and the property of compliment matrix are completely analyzed too
其次，为揭示土体各向异性变形特性，有针对性进行了三主应力分别单向加荷的真三轴试验研究，分析相对于加荷向的侧向变形、互为侧向的侧向变形、不同主应力加荷向的应力应变关系各向异性性状。 |
| 8. | It is discovered that the domestic and foreign true triaxial apparatus already designed and manufactured have their individual merits and faults during debuging and testing the new true triaxial apparatus of hohai university . thus , firstly , the quality of the main domestic and foreign true triaxial apparatus is analyzed and evaluated , and some constructive opinions of designing and manufacturing more reasonable , stable , accurate and dependable domestic true triaxial apparatus in the future are brought up
本文主要的研究工作：首先，在利用河海大学新型真三轴仪进行大量试验过程中发现，国内外已设计、研制的主要真三轴仪各有优缺点，对国内外真三轴仪优劣进行了可能的分析和评价，为国内今后设计、研制更合理、稳定、准确可靠的真三轴河海大学博士学位论文仪提出一些建设性意见。 |
