黄土地区无砟轨道路基变形与稳定性分析

研究目的:探讨解决在黄土地区尤其是湿陷性黄土地区修建无砟轨道客运专线时路基变形的监测、预测沉降、路基稳定性评判问题,为指导黄土地区路基设计、施工和沉降监控提供建议及依据。研究结果:分析得出路基变形的主要因素,提出了复合地基桩一土“综合模量“的概念以及沉降量的计算方法,对路基稳定性进行了判定,解决了黄土路基的工后沉降技术问题。

Analysis of Deformation and Stability of Subgrade of Ballastless Track in Loess Area

Research purposes:The discussions are made on the issues of deformation observation,settlement prediction and stability evaluation of subgrade when building ballastless railway passenger dedicated line in loess area,especially in collapsible loess area,for the purposes of making proposals and providing basis for the design and construction of subgrade in loess area and observing settlement. Research results:Through analysis,the main factors of subgrade deformation are found out,the concept of"integrated modulus"of composite foundation pile-soil and the method of calculating settlement volume are presented,the evaluation is made for the subgrade stability,and the technical problems of post-construction settlement of loess subgrade are solved.