路基

Based on limiting the tensile strain at the bottom of the asphalt layer and the vertical compressive strain at the top of the subgrade, the suitability of layer thickness is checked by two criteria. One is controlling the maximum surface deflection under the design load, and the other is controlling the modulus ratio between adjacent unbound aggregate base and subbase layer.

该方法基于限制沥青层底的拉应变和路基顶面的压应变，采用两个准则来校核所设计的沥青层厚度的适宜性：一是控制设计荷载作用下的最大路表弯沉；二是控制相邻两个无结合料处治的集料层的模量比。

Especially,the subbase structures usually adopt lime and fly ash stabilized fine-grain soil( lime-ash soil for short)to replace previous common lime stabilized soil,that improves the engineering quality and service quality of road further.

粉煤灰已广泛用于高速公路的路基及高等级路面的基层和底基层，特别是底基层结构形式多采用石灰、粉煤灰稳定细粒土，取代了以前较常用的石灰稳定土，进一步提高了工程质量和道路的使用品质。

At the same time, there is not uniform between subgrade design index and construction control index.

同时，存在路基设计指标与施工控制指标不统一的问题。

The dynamic properties of red clay used in railway subgrade are analyzed on the basis of testing results.

本文根据研究课题的部分试验成果，分析了作为铁路路基基床下部填料的红粘土的动力特性，提出了进一步研究分析的途径。

Therefore, the subgrade should have sufficient robustness, stability and durability.

因此，路基应具有足够的坚固性、稳定性和耐久性。

The research results can provide reference for design and construction of subgrade in seasonal frozen soil region.

本文成果可作为季节性冻土地区路基设计和施工的参考。

It is found that the environment change will result to the degradation of the subgrade-filling properties and subgrade to failure finally.

实践中发现环境条件的变化对填料土的力学特性产生影响，并最终导致路基的破坏。

The computational results can serve as a reference for determination of the reinforcement depth in the soft subgrade.

计算结果可为软土路基加固深度的确定提供理论依据。

The deformation control of subgrade is one of critical factors that guarantee the track regularity under the normal status.

路基的变形控制是保证轨道平顺性的关键因素之一。

Research on the performance and design of expansive soils as road subgrade has great importance in solving pavement problems.

膨胀土性能及膨胀土路基设计研究是解决道路问题的一个重要部分。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。