半刚性基层双层连续摊铺施工变形

Construction Deformation of Semi-rigid Base Under Continuous Double-layer Paving

为了研究双层连续摊铺时施工荷载使半刚性基层产生的变形,通过进行室内模拟试验和现场实测试验进行对比分析并建立模型,得到连续摊铺下半刚性基层的施工位移的基本变化规律和适合半刚性基层的施工位移预估模型。结果表明:在重复荷载作用下,半刚性基层竖向位移的增长规律与室内模拟和现场实测试验是一致的,都是随着运输车辆作用次数的增加而增加,并且增加的速度越来越慢,最终逐渐趋向于一固定值。

In order to study the deformation of semi-rigid base caused by the construction load of double-layer paving, based on the indoor simulation and the field test, the data were collected, the results were compared and analyzed, and the model was established. The basic change rule of the construction displacement of semi-rigid base under continuous paving and the construction displacement prediction model suitable for semi rigid base were obtained. The results show that under the repeated load, the growth of the vertical displacement of the semi-rigid base is consistent with the indoor simulation and the field test, all with the increase of the number of transport vehicles. But the speed of increasing becomes more and more slowly, and finally tends to a fixed value.