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对渭南地区回填黄土进行不同含水率重塑后直剪试验,得到其抗剪强度以及强度参数。结果表明,相同围压下抗剪强度随含水量的增大而减小,粘聚力随含水量呈先增大后减小的趋势,内摩擦角随含水量线性减小。天然含水率下直剪试验的剪切速率对重塑土的强度参数有一定影响。
The backfill loess in Weinan area was subjected to direct shear tests after reshaping with different moisture contents, and its shear strength and strength parameters were obtained. The results show that the shear strength decreases with the increase of water content under the same confining pressure, and the cohesion increases first and then decreases with the water content. The internal friction angle decreases linearly with the water content. The shear rate of direct shear test under natural water content has certain influence on the strength parameters of remolded soil.