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本文介绍了土工格栅加筋土墙的性能受压实影响的实体模型研究。实验采用COPPE/UFRJ岩土工程实验室的设备完成。土的压实采用了两种型号的手动压实机:振动板和振动夯。振动板(轻型压实机)比振动夯(重型压实机)的等效垂直应力低很多。对加筋的活动拉力和土墙内外的位移进行了监测,结果表明,土压实的效果并不限于孔隙比的减小。压实造成加筋土体内的水平应力显著增加进而生成一种预固结材料。对结果的分析表明,压实对加筋的拉伸和工后位移起到了决定性的作用。重型压实土墙的连接荷载比轻型压实土墙的荷载小得多。结果还表明,重型压实土墙加筋内传递的最大拉力的位置更靠近墙面。另一方面,施工结束时在重型压实土墙加筋层实测的活动拉力比轻型压实土墙高得多。尽管如此,我们看到两个土墙加筋中活动拉力的差别随外部附加载荷的增加而减小。
In this paper, the solid model of geogrid reinforced soil wall affected by compaction is introduced. The experiment was done with the equipment of the COPPE / UFRJ geotechnical laboratory. Soil compaction Two types of manual compactors were used: vibrating plate and vibratory rammer. Vibratory plates (light compactors) have much lower equivalent vertical stresses than vibratory rammers (heavy compactors). The tensile force of reinforcement and the displacement inside and outside the wall were monitored. The results show that the effect of soil compaction is not limited to the reduction of void ratio. Compaction results in a significant increase in horizontal stresses in the reinforced soil resulting in a preconsolidated material. Analysis of the results shows that compaction has a decisive effect on the tensile and post-work reinforcement. Heavy-duty compacted soil walls have a much lower load than light-weight compacted soil walls. The results also show that the maximum tensile force transmitted within the reinforcement of a heavily compacted wall is located closer to the wall. On the other hand, the actual tensile load measured on the heavily compacted soil-wall reinforced layer at the end of construction is much higher than that of light-weight compacted soil walls. Nevertheless, we see that the difference in tensile forces between two earth-wall reinforcements decreases with increasing external load.