In order to simulate the deformation behavior of granular materials ( subgrade soils and subbase materials ) , an elasto - plastic constitutive model , the drucker - prager ( dp ) model , was used in the analysis 为了比较真实地模拟路基及底基层粒料的变形行为，采用弹塑性dp准则。
Based on the annlysis of the stabilization method of soil used for sub - base and fully laboratory test , this paper puts forward the stablization method for silty soil in handan area 本文通过分析当前常用的路面底基层的稳定土加固方案，通过系统的试验，针对邯郸地区低液限粉土，提出了稳定加固方案。
Through studying the method of using the powder soil as the bottom basic unit of the superhighway , a kind of suitable steady type on mechanics and way - use performance was found 摘要通过对粉性土这种特殊土用作高等级公路底基层，进行稳定方法研究，寻找一种力学性能和路用性能都适宜的稳定类型，从而为广大使用者提供参考。
In this paper , combined with the construction of shangqiu to kaifeng freeway , the component design method of cement - stabilized silty soil and the strength , modulus and anti - cracking performance of the mixture are researched systemically in lab and on site 本文结合商丘至开封高速公路底基层的修建，对大剂量水泥稳定粉质土材料组成配合比、强度、模量、抗裂性等变化规律进行了室内、外系统试验研究。
According to the writer ' s practical experience , based on the intensive analysis of the factors of non - smooth of bitumen road , the paper proposes a series of technical measures from base layer , construct of base layer , controlling parameters of paving mechanically to grinding surface of road to make sure of smooth degree of surface of bitumen road paving mechanically 摘要根据实践经验，在对公路沥青路面不平整因素深入分析的基础上，从底基层和基层施工、机械摊铺技术参数的控制、碾压作业等方面提出了一系列保证机械摊铺沥青路面的面层平整度的技术措施。
We can use both calcium carbide dust and calcium carbide dust - flyash to stabilize fine - soil . as well as being used in subbase of high grade road , calcium carbide dust stabilization and calcium carbide dust - flyash stabilization can be used in basecourse of low grade road . so we can deduce that calcium carbide dust - flyash - gravel stabilization can be used in basecourse of high grade road 我们可以利用电石灰来稳定细粒土，利用电石灰和粉煤灰来稳定细粒土。通过数据分析，这种电石灰稳定土和电石灰二灰土完全可以刚于高等级公路的高级路面的底基层，也可以用于低等级公路的路面基层，同时推断，用电石灰和粉煤灰来稳定的级配碎石，可用于高等级公路的路面基层。
In addition , influence to density and strength of cement - stabilized soil because of molding delay and reasonable curing period from completion of subbase to the compaction of road - base are also researched . finally , experiment section of cement - stabilized silty soil subbase is constructed according to lab research results , and construction methods are summarized 此外，研究了延迟成型时间对水泥稳定土的密度和强度的影响及底基层成型后至基层压实前的合理养生龄期，最后，根据大量的室内研究成果进行了大剂量水泥稳定粉质土底基层试验路的铺筑，并对施工工艺进行了总结。
In this paper , a series of surveys on road condition , pavement - performance and destroy reason are analyzed , soil property , hydrologic regime are combined , modulus of resilience are confirmed on heavy compaction test , foundation classification in area of qinhuangdao is divided into 3 grades and highway is divided into 3 districts according to the principle that different soil grades produce the same effect on thickness of base course or bottom course , classification of traffic is divided into 4 grades after observation materials of traffic volumes are collected extensively , traffic characters and parameters are analyzed 本课题在对现有路面结构状况和使用状况进行调查，并对路面使用性能和破坏原因进行分析的基础上，结合秦皇岛地区的土质、水文条件，确定重型击实标准条件下土基回弹模量值，依据不同等级土基对路面基层或底基层的厚度产生大致相同效应的原则，将秦皇岛地区地基强度等级划分为三级并将本地区公路分成三个区。在广泛收集交通量及组成的观测资料，了解交通特性，进行交通参数分析后将交通量等级划分为四级。
The old asphalt mixture being dealt with cement is a cold in - place recycling method . the mechanism is that the crushed asphalt mixture and lime soil are reused and is stabilized by cement additive . so the material can be applied in base and subbase course such as cement stabilized aggregate 利用水泥处治废旧沥青路面材料属于沥青路面冷再生的范畴，其再生机理是将加工破碎的废料(包括废旧的沥青混合料和部分灰土基层)重新利用，经过水泥进一步的稳定作用，形成与水泥稳定级配粒料类似的基层和底基层材料。
In the light of its special property being not easy to gain strength , through mechanics researches on different methods to stabilize this kind of low _ liquid _ limit silty soil as subbase material , evaluated both technically and economically , we have got a cement lime stabilization plan to meet the index requirements for non _ side _ limit strength of compression of subbase of class2 road stipulated in the specification ; by means of improving the workmanship , thickening the loose layer of soil , adding soil on covering weave fabric before compaction , such problems can be solved as very poor compaction , loose surface during compaction , roughness and unevenness , coats of layer and shear damages 本文针对黄河冲积而成的低液限粉土其粘粒含量极低、土的不均匀系数很小、胶体活性差的工程特性,通过采用不同方法稳定该类土作底基层材料的力学性能研究,从技术、经济角度综合评价,得到满足规范抗压强度指标要求的水泥石灰稳定方案。通过对原材料、试验配合比设计、施工、等方面进行优化,从而显著减轻了基层的早期及长期缩裂程度,从而提高了路面的耐久性。
