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首页> 外文会议>Geotechnical Special Publication no.143; Japan-U.S. Workshop on Testing, Modeling, and Simulation; 20030627-29; Boston,MA(US) >PLANE STRAIN COMPRESSION TESTS ON CEMENT-TREATED SANDS
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PLANE STRAIN COMPRESSION TESTS ON CEMENT-TREATED SANDS

机译：水泥砂土的平面应变压缩试验

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摘要

By using a newly developed plane strain compression testing system, a series of tests were conducted on rectangular prismatic specimens having a dimension of 16~*6~*8 cm to investigate the effects of large amplitude cyclic loading on the deformation and strength properties of cement-treated sands. Significant effect of bedding error on the externally measured axial strains was observed. The locally measured lateral strains in the restrained direction accumulated up to about 0.2 % on the extension side, due possibly to effect of bedding error at the side interfaces including lubrication layers, which in turn reduced the side friction effectively. Comparisons were made between monotonic and cyclic plane strain compression tests to evaluate the differences on the peak strength of specimens with and without a cyclic loading history. No evidence of a reduction in the peak strength of specimens subjected to large amplitude cyclic loading was found. The specimen that showed the lowest peak strength failed during cyclic loading, and it was confirmed that a shear band was developed in a progressive manner during this period.
机译：通过使用新开发的平面应变压缩测试系统，对尺寸为16〜* 6〜* 8 cm的矩形棱柱试样进行了一系列测试，以研究大振幅循环荷载对水泥变形和强度特性的影响。处理过的沙子。观察到地层误差对外部测量的轴向应变的显着影响。可能是由于在包括润滑层的侧界面处的层理误差的影响，沿约束方向局部测量的横向应变在延伸侧积累了大约0.2％的应力，从而有效地减小了侧向摩擦力。在单调和循环平面应变压缩试验之间进行比较，以评估有和没有循环载荷历史的试样峰值强度的差异。没有发现降低承受大振幅循环载荷的样品峰值强度的证据。表现出最低峰值强度的样品在循环载荷下失效，并且证实了在此期间以渐进方式形成了剪切带。

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