Then, it points out the major problems in the research of mechanics behavior and character of subgrade soil under dynamic load recently.
在这些环境的作用下，管道将产生相应的力学行为，主要有承载行为、变形行为、断裂行为、疲劳行为和腐蚀行为。
On this ground, study on dynamic property and dynamic parameter of weathered granite subgrade soil in repeated loading is quite essential.
因此研究动态交通荷载作用下风化花岗岩路基土的动力变形特性和动力参数是十分必要的。
In order to compute the vibration response of structures and foundations correctly it is necessary to establish the damping properties of subgrade soil reasonably.
为了正确计算结构物和基础的振动反应，就必须合理地确定地基的阻尼参数。
To ensure subgrade compaction, we must resolve the choice of subgrade soil, moisture control, shop soil thickness control and detection of degree of compaction work.
要保证路基的压实度，必须解决好路基土壤的选择、含水量的控制、铺土厚度的控制和压实度的检测等工作。
When road is put into use after completion, the additional stresses on the soft subgrade soil will be changed, which are composed of static stress and dynamic stress.
公路建成通车后，软基土受到的附加应力水平随即发生改变，除原来填土路堤静荷载作用外，还受行车动荷载的作用。
Rockfill stuff and subgrade soil should be studied on settlement rule for high rockfill embankment respectively, for the differences of the pressurized state and settlement rule.
由于填石料与地基土的受力性能不同，沉降规律也大不相同，因此提出先分别考虑路基和填石料的变形，然后再叠加的方法来研究高填石路堤沉降规律。
In this paper the principle from the soft soil subgrade, puts forward several different approaches.
本文在这从软土路基的处理原理出发，提出了几种不同的处理方法。
In roadbed construction, excessive soil is used to fill subgrade because of weather and construction schedule constraints and other reasons.
在公路路基施工中，天气及施工工期的限制等原因，会经常遇到采用过湿土填筑路基的情况。
The cement improved soil is a kind of important fill material used widely in construction of railway subgrade.
水泥改良土是高速铁路路基工程中广泛使用的一种重要填料。
The control of soft soil subgrade construction is a important link of building the high-type highway project.
软土路基的施工控制是高等级公路项目建设的重要环节。
In soft soil area, the interaction of subgrade deformation and superstructure is a very important matter must taken into consideration.
在软土地区地基变形对上部结构的作用是必须考虑的重要内容。
Under the effect of load, the settlement of subgrade will lead to the lateral distortion of soft soil.
在桥头路基荷载的作用下，地基发生沉降，软土会发生一定的侧向变形。
This article from the conception of soft soil foundation, this paper expounds the soft soil subgrade treatment methods and matters needing attention in the construction.
本文从软土路基的概念出发，阐述了软土路基处理方法的种类和施工中应注意的事项。
Ballastless track on soil subgrade has been already widely used on high-speed railway abroad, but it is just at the starting stage in China.
土质路基上的无碴轨道在国外高速铁路上已得到广泛应用，而在我国却处于刚起步阶段。
The most pivotal technical problem of building high-speed railway on soft soil is strictly controlling post-construction settlement of subgrade and its elastic deformation of top surface.
在软土地基上修建高速铁路，其最关键的技术问题就是严格控制路基的工后沉降及列车高速运行时路基顶面的弹性变形。
Compare to soil subgrade, rock subgrade has the characteristic of high carrying capacity and little distortion, the area of foundation is small, that the height of foundation is possibly c.
其中相对于土质地基而言，岩石地基具有承载力高和变形小的特点，基础的底面积相对较小，这样控制基础高度可能是抗剪计算而不是抗弯计算。
Subgrade slope surface erosion is defined as a phenomenon which rain runoff destroys subgrade slope surface, and washes away soil on the surface of slope.
路基边坡冲刷是指降雨形成的坡面水流破坏路基边坡坡面，并冲走坡面表层土体的现象。
According to practical construction situation, the paper proposes treatment and protective measures of expansive soil subgrade, which can promote the strength and stability of subgrade.
根据工程实际情况，对膨胀土进行调查分析试验，提出了膨胀土路基处理方法与防护措施，提高了路基的强度和稳定性。
Salt expansion processes in subgrade of Sulfuric saline soil are the external performance of moisture temperature, salinity and stress fields interacting with each other.
硫酸盐渍土路基水分场、温度场、盐分场和应力场相互影响，相互作用，其盐胀的过程就是四场相互交融的外在表现。
The pile-plank structure is a new-type structure of ballastless truck on soil subgrade, and the design and calculation of the pile-plank structure are still immature.
桩板结构路基是土质路基上无碴轨道的一种新型结构形式，其设计及计算还不成熟。
Combined with the construction practice, the paper introduced the construction method and quality control of cement mixing pile strengthening soft soil subgrade.
结合浙赣铁路提速改造工程水泥搅拌桩加固软土路基的地基施工，介绍水泥搅拌桩加固软土路基地基的施工方法及质量控制。
There are some earth caves and karst in the airfield runway subgrade of some newly constructed airport, and the bearing capacity of the overburden soil in the subgrade is low.
某新建机场滑行道路基中存在土洞和溶洞，且路基上部土层承载力低。
On this foundation, the determination method of treatment depth for subgrade paved with expansive soil is proposed based on the relationship of swelling pressure and unloaded expansibility.
在此基础上，建议按膨胀力与零膨胀率的相关性来确定膨胀土路基处置深度。
Then, transient response of vertical displacement, vertical stress and pile-soil stress ratio of some nodes in the elastic subgrade are computed in one single load cycle.
采用桩土分析法，计算分析在一个荷载周期内，弹性路基内各研究节点的位移、竖向应力、桩土应力比的瞬态响应。
Using the latter, with the correlativity of soil 'density and the velocity of the Rayleigh surface wave, we can obtain the compaction of the subgrade.
后者则是用已得到的各层瑞雷波速度值，利用土密度与瑞雷波速的相关关系计算各层的压实度。
This paper discusses the method and technical keys of rapid and nondestructive measurement of subgrade compactness (soil compactibility) by instantaneous impulsion method.
叙述了用瞬态冲击法快速、无损测量路基压实度(土壤坚实度)的方法及技术关键。
People pay more attention to the influence of the nature of soil on subgrade as it is the important material to construct subgrade.
土作为修筑路基的重要材料，其性质对路基的影响倍受人们的关注。
Taking macroarea filled soil on alluvial flat after compaction as subgrade for building is very few.
在这样的场地上，大面积新填土，碾压后修建建筑物，还是很少见的。
Highway subgrade is soil body structure including natural earth foundation and artificial fill embankment.
公路路基是土体构筑物，含天然土地基和人工填土路堤两大部分。
Highway subgrade is soil body structure including natural earth foundation and artificial fill embankment.
公路路基是土体构筑物，含天然土地基和人工填土路堤两大部分。
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