Ⅳ级自重湿陷性黄土区客运专线铁路路堤处理地基的现场试验研究

Ⅳ Collapsible Loess Area of Passenger Dedicated Railway Embankment Foundation Test on Site Collapsible Loess Area of Passenger Dedicated Railway Embankment Foundation Test on Site

黄土是一种特殊的工程性质的材料,具有大孔性,结构性,及水敏性的特点。我国黄土面积较大,大部分为湿陷性。尤为突出的就是黄土高原地貌集中在黄河中游地区,它的特点是地层连续、厚度大、面积广。由于黄土的特性以及它广泛分布的特点,黄土问题成了我国铁路建设不得不克服的一个难题。这些问题都对铁路建设和保养产生较大的负面影响。整篇文章通过勘测,施工和检测方面了解到了黄土地区的客运专线铁路路堤处理中的重大地质工程难题,同时也从专业的角度,了解了关于黄土的地理特点、地理位置、气候、地形地貌、水文性等诸多特征。在高速铁路的设计和路堤处理地基过程中,沉降变形控制是重点对象,此外,还要保证系统的强度和稳定性达到要求,这样就对高速铁路工后沉降严格要求作出规定。分析了对于湿陷性黄土地基非饱和土铁路路堤的处理方法,同时根据自身特点建立合理的理论。

Loess is a kind of special engineering properties of the material, it has a big hole, structure, and characteristics of water sensitivity.In China, the loess area is large, most of them are collapsible.Especially in the Loess Plateau landform concentrated in the middle reaches of the Yellow River region, it is characterized by the continuous formation, large thickness, wide area.The characteristic of loess and its characteristics are widely distributed, the problem has become a problem of railway construction in China had to overcome.All these problems have a great negative impact on the railway construction and maintenance.The whole article survey, construction and detection of understanding to major engineering geological problems in the loess area of passenger dedicated railway embankment treatment, and from a professional point of view, to understand the geographical characteristics of loess, geographical location, climate, topography, hydrology and many characteristics.In the high-speed railway design and embankment foundation treatment, settlement deformation control is the focus.In addition, but also to ensure that meet the requirements of the strength and stability of the system, thus the settlement after construction of high-speed railway strict requirements stipulated.So this paper analyzes the treatment methods of collapsible loess unsaturated soil of railway embankment, and establish reasonable theory according to their own characteristics.