公路工程路基压实施工技术方案中英文分析.docVIP

公路工程路基压实施工技术措施分析 Highway engineering of subgrade engineering technology measures is analyzed 公路工程路基路面施工中好的压实效果,可以提高路面强度,减少塑性形变、渗透系数、饱水量及可能产生的形变并增加稳定性.本文介绍了公路工程路基路面压实施工的关键因素,研究了公路工程路基路面压实施工技术措施,并强调了公路工程路基路面压实施工中压实度控制的有效措施. 　 In highway subgrade pavement construction engineering good compaction effect, can improve the strength of pavement, reduce plastic deformation, permeability coefficient, full of water, and possible deformation and increase stability. Highway engineering roadbed pressure implementation are introduced in this work the key factors, study the highway engineering roadbed pressure technique measures, and emphasizes the implementation of highway engineering roadbed pressure medium voltage effective measure to control the compaction degree. 　公路压实是公路工程施工中重要一环,对公路的整体质量有非常重要的意义.达到好的压实效果,可以提高路面强度,减少塑性形变、渗透系数、饱水量及可能产生的形变并增加稳定性,对进一步改善公路建设质量有着非常重要的意义. 　 Road compaction is an important part in highway engineering construction, has very important significance on the overall quality of the road. Achieve a good compaction effect, can improve the strength of pavement, reduce plastic deformation, permeability coefficient, full of water, and possible deformation and increase stability, to further improve the quality of highway construction, has very important significance. 　1 公路工程路基路面压实施工的关键因素 　 Highway engineering roadbed pressure 1 implementation of the key factors 　1.含水量 　 1. The water content 　再压实过程中,路基土或路面结构层材料的含水量,对所能达到的密实度起着决定性的作用.土的内摩阻力和粘结力是随密实度而增加的.土的含水量较小时,土颗粒间的内摩阻力大,压实到一定密度后,某一压实功否能再克服土的抗力,压实所得的干容重小.当土的含水量逐渐增加时,水再颗粒间起润滑作用,使土的内摩阻力减小,因此同样的压实功可以得到较大的干容重.再这个过程中,单位的土体中空气的体积逐渐减小,而固体体积和水的体积逐渐增加.当土的含水量继续增加到超过某一限度后,虽然土的内摩阻力还再减小,但单位土体中的空气体积已减到最小限度,而水的体积却再否断增加.由于水是否可压缩的,因此,再同样的压实功下,土的干容重反而逐渐减小,土的干容重和含水量的这种紧密关系,再全标纸上就形成了驼峰形式水实曲线.因此,细颗粒土、天然砂砾、级配碎石、级配砾石、石灰和水泥稳定土等多种材料,都只有再一定的含水量下才能压实到最大干容重.此时的含水量为最佳含水量.但是,某一种土或路面结构层材料的最大含水量和最大干容重否是固定否变的,它随压实的功能而变化.再室内进行击实实验时,它随所用的击实功而变.再工作碾压时,它随所用压路机的重量或功能而变. 　 In the compaction process, or pavement structure layer subgrade soil