查询词典 subgrade

In this paper,Laterite soil adjacent to some stake of the highway in Chenzhou, Hunan section from Xiamen to Chengdu was used to investigate the deformation characteristics and protection methods of the Laterite soil subgrade under the influence of environment factors.Properties like water-holding capacity,capillary rise, coupled heat-moisture transfer and wetting deformation of samples under different compactness were studied through a series of laboratory tests.In addition,by using meteorological data of two consecutive years in Chenzhou,coupled process of moisture transfer and subgrade deformation was stimulated under the impacts of groundwater and the atmosphere.Specific work done in this paper is as follows:(1) Samples under different compactness were subjected to a series of conventional laboratory tests,such as permeability,consolidation,contraction,shear test and etc.

论文以厦门至成都高速公路湖南郴州段的红粘土为研究对象，以环境因素作用下红粘土路基的变形特征与防护方法为研究目的，通过室内试验研究了不同压实度红粘土的持水性能、毛细上升、湿热耦合迁移及湿化变形等特征，借助郴州地区连续两年的气象数据，模拟在地下水和大气的共同作用下路基内部红粘土水分迁移与路基变形的耦合过程，主要研究内容及结论如下：(1)针对不同压实度的红粘土，系统开展了其渗透、固结、收缩、剪切等试验研究。

The results of the test show that the whole intensity and comprehensive stability of subgrade made a good progress because the capillary water cant rise by using the insulating layer. In the prior condition of taking insulating layer thickness as 0.2m, choosing insulating layer 0.5m, 0.8m, below the pavement, the stability of seasonal frozen soil subgrade is analyzed. The results of the test also show that the optimal position of the insulating layer is 1.0m～1.5m .

试验表明，由于隔离层的作用使得毛细水无法迁移，对路基整体的强度和综合稳定性都有了很大程度上的提高，同时试验还表明在隔离层厚度为0.2m的前提下，设置在距路面以下1.0m～1.5m位置，即路基表面以下0.5m～0.8m处对路基的稳定性最为有利。

The analysis shows that the settlement observation data of subgrade surface may be used to investigate the stability and the developing tendency of subgrade settlement, and whether the correlation coefficient of curve regression meets the requirement, however, that it cannot be used to calculate post-construction settlement.

分析表明：路基面沉降观测数据可用于考察路基沉降的稳定性、后期发展趋势和曲线回归的相关系数是否满足要求，但无法直接用之进行工后沉降检算。

Research purposes: The anti- frost heaving measures for the surface of subgrade in permafrost region and the anti-heat thawing measures for the subgrade of poor and rich ice frozen soil are put forward based on the analysis of the characteristics of surface frost heaving and bottom thawing of subgrade in permafrost region.

研究目的：本文从分析冻土区路基表层的冻胀特征和底层的融沉特征入手，提出路基结构设计中冻土区路基表层的防冻胀措施以及低含冰量冻土和高含冰量冻土路基的防热融措施。

From these researches as above, this paper found a new method to analysis salty soil road engineering properties by phase equilibrium theory, which provides a new angle of analysis on salty soil properties, experiment and engineering practice in these ways as follows:(1) Analysis the disadvantage of traditional salty soil experiment;(2) Analysis the disadvantage of current salty soil definition by phase equilibrium theory, and gives the chart of distinguish salty soil by the condition of hydrography and climate change;(3) Analysis the mechanics of subgrade frost boiling based on the change rule of liquid content;(4) Based on the change rule of ingredients content and volume in salty soil, analysis the mechanics of subgrade salt heaving and the restraining method by adding sodium chloride.

通过以上研究，本文初步建立了以相平衡理论为核心的盐渍土路用工程性质分析方法，该方法对盐渍土工程性质的理论分析、试验研究以及工程实践提供了新的研究思路与方法，具体体现在：(1)分析了传统的盐渍土试验存在的缺陷；(2)分析了现行盐渍土定义的不足，并以相平衡理论为基础，结合水文、气候条件的变化给出了判别盐渍土的诺谟图；(3)分析了盐渍土盐溶液含量的变化规律，并从盐渍土含液量变化规律出发，分析了盐渍土路基较非盐渍土路基翻浆严重的机理；(4)分析了盐渍土各固相含量及其体积的相变规律，并在此基础上分析盐渍土路基的盐胀机理，以及采用添加氯化钠来抑止硫酸盐盐渍土的盐胀机理

The paper expounds systematically the strengthening mechanism,design calculations,construction process,quality control and quality inspection during cohesionless soil subgrade treatment by vibrating sunken tube sand pile,based on the practical application of vibrating sunken tube sand pile in sand-wash-and-filling subgrade treatment of Ganjiang Nanda Road.

结合振动沉管砂桩在赣江南大道冲填砂路基处理中的应用实践，系统地阐述振动沉管砂桩在砂性土地基处理中的加固机理、设计计算、施工工艺、质量控制及质量检验。

When rolling the roadbed, the best degree of compaction is 93%~95%. When taking Aeolian sand for preventing the water rising, the Aeolian sand replacement should be set above water table, which should normally be made at 50~80 cm depth of soil base with 15~20 cm thickness of replacement for medium wet subgrade and 20~30 cm for wet subgrade. When using stabilized soil inorganic binder for prevention and control of the frost damage, the thickness of the binder is about 25 cm The mass proportion of cement, coal and Aeolian is about 6:40:54 and lime, fly ash and aeolian is about 14:30:56. Based on these, comparative evaluation for various preventing and curing measures of the Aeolian subgrade was given.

通过对试验数据分析得到了其冻结规律，采用碾压击实法，其最佳压实度度为93%~95%；采用风积砂换填隔水法，风积砂垫层时位置应在地下水位以上，一般应在土基50~80 cm深度处铺筑，换填厚度在中湿路基为15~20 cm，潮湿路基为20~30 cm；采用无机结合料稳定土防止、防治风积土路基道路冻害，厚度均应在25 cm左右，其中水泥、煤渣、风积土的质量比约为6：40：54，石灰、粉煤灰、土三者的质量比为14：30：56，在此基础上，对各种措施的防治效果进行了对比评价。

Located immediately above the subgrade,the subbase component consists of material of a superior quality to that which generally is used for subgrade construction.

位于马上以上路基，底基层部分包括物质的优越品质，以说，一般是用于路基施工中的要求，为基层材料通常而言层次，塑料特性，并结实。

Three types of subgrade filling material are selected to analyze the change rule of subgrade resilience modulus under different compaction. Meanwhile PFWD（portable falling wei-ght deflectometer） is combined to integrate this parameter with compaction of construction control index,which brings about the conversion relation between three subgrade filling material and compaction. It can provide reference for pavement design and construction.

选定三种不同类型的路基填料，分析在不同压实度条件下路基回弹模量的变化规律，并结合PFWD检测方法，将设计参数回弹模量与施工控制指标压实度联系起来，得出三种路基填料的回弹模量与压实度的转换关系，可为路面设计与施工提供合理的依据。

The heat insulation materials of the XPS of which decrease embankment height, thermal pipes setup in sun-facing side of embankment, crushed rock cover and shading board are used to adjust the subgrade damages caused by the thaw basin. Crushed rock-based embankment and both sides thermal pipes are used to adapted to subgrade damages caused by thaw-sandwich layer. The berms are adapted to subgrade damages caused by the frozen bulge.

针对融化盘偏移所引发的病害，提出可采用XPS板路基降低路基高度，或在阳坡一侧采用热棒路基、碎石护坡路基、遮阳板路基等工程措施进行治理；针对融化夹层所引发的病害，提出可采用片块石路基、双侧热棒路基进行治理；针对冻结核发育所引发的病害，提出可采用防水保温护道进行治理。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。