结合南阳地区膨胀土的抗剪强度研究，对其现场剪切试验的试样制备及试验方法进行探讨，提出了膨胀土抗剪强度的修改计算公式。
Taking the expensive soil in Nanyang Area, Henan Province, as study case, the in-situ shear test method, including preparing samples and test method, is proposed in the paper.
首先，对非饱和黄土进行了土的吸力测试、抗剪强度试验、结构强度和非饱和土三轴试验。
Firstly, a series of unsaturated loess tests were carried out under matric suction testing, shear strength, structural strength, unsaturated triaxial tests.
试验结果表明，经过侧向卸荷过程土样的抗剪强度指标与常规三轴试验明显不同。
The test results show that the shear strength of soils after lateral unloading are different from that of conventional triaxial test.
通过室内试验，采用特殊土即某类红粘土，研究了不同水泥掺入比对水泥红粘土抗剪强度的影响，并进行了比较分析。
By using red clay in a laboratory test, the shear strength of cement-treated red clay with different mixing ratio of cement is tested at different stages, and its mechanism is analyzed.
根据试验结果建立了考虑温度影响的非饱和土抗剪强度公式和切线杨氏模量公式。
The formulas of shear strength and Young's tangent modulus taking account of temperature were proposed.
然后选取珞珈山土样进行了室内非饱和土的三轴剪切试验，得出试验土样的抗剪强度参数。
Secondly, Luojiashan soil samples were selected for the unsaturated triaxial tests and the shear strength parameters were obtained.
减少土样扰动，准确评估粘土不排水抗剪强度的“SHANSEP”室内试验方法及应用。
The concept and application of "SHANSEP" were proposed as a new laboratory test method which can minimize the sampling disturbance and more correctly estimate the undrained shear strength of clay.
通过对比分析碎石土加筋前后高压大三轴饱和固结排水试验结果，研究碎石土加筋的抗剪强度特性。
A research about the shear strength of gallet is carried out by comparison of the outcomes of high pressure and large scale triaxial tests of reinforced and unreinforced gallet.
试验结果表明：温度对粘性土的抗剪强度有比较复杂的影响。
The research results indicate that the temperature has complicated influence on the shear strength of clayey soil.
根据试验结果分析含水率对非饱和土抗剪强度的影响，建立非饱和土的实用抗剪强度公式。
Based on testing results, the influence of water content on shear strength is analyzed; and shear strength formula of unsaturated soils is established.
试验结果表明，随温度的升高，非饱和土的抗剪强度增加，初始切线杨氏模量增大。
The research results showed that specimens with higher temperatures showed higher shear strengths and Young's tangent modulus.
但是砂土的试验结果却表明，砂土的抗剪强度指标几乎不受剪切路径的影响，这与粉土的试验结果有所区别。
But tests in sand indicates that the shearing strength parameters of sand is barely affected by shearing paths.
但是砂土的试验结果却表明，砂土的抗剪强度指标几乎不受剪切路径的影响，这与粉土的试验结果有所区别。
But tests in sand indicates that the shearing strength parameters of sand is barely affected by shearing paths.
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