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原位推剪试验是确定岩土体抗剪强度的主要途径,而在现有岩土体现场水平推剪试验装置的实际应用过程中发现,前钢板由于一些原因容易出现受力不均并产生倾斜的现象,使得试验岩土体所受正应力与受力面不完全是垂直的,从而造成试验结果的不准确甚至导致试验失败。在总结分析试验结果的基础上,对现有的试验装置进行了改进,提出了一套可以有效避免前受力钢板倾斜的试验装置改进方案并进行了尝试性试验,试验结果证明改进方案比较成功,可为以后的岩土体现场水平推剪试验提供参考和借鉴。
In-situ shear test is the main way to determine the shear strength of rock and soil, and in the practical application of the existing horizontal and shear shear test apparatus for rock and soil, it is found that the front plate is prone to uneven force and produce Tilting phenomenon makes the test of rock and soil stress and stress plane is not completely vertical, resulting in inaccurate test results and even lead to failure of the test. On the basis of summarizing and analyzing the test results, the existing test equipment has been improved. A set of improved test equipment that can effectively avoid the inclination of the prestressed steel plate has been put forward and the tentative test has been carried out. The test result shows that the improved plan is more successful , Which can provide reference and reference for the future horizontal push-shear test of rock and soil body.