铁路客运专线路基面沉降特征与工程意义  

Settlement characteristics and engineering significance of subgrade surface for railway passenger dedicated line

作　　者：陈善雄[1] 王小刚[1] 姜领发[1] 戴张俊[1] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉430071

出　　处：《岩土力学》2010年第3期702-706,726,共6页Rock and Soil Mechanics

基　　金：中国科学院知识创新工程重要方向性项目(Nokzcx2-yw-150);岩土力学与工程国家重点实验室重点项目(NoSKLZ08032)

摘　　要：路基面沉降是铁路客运专线变形观测和沉降评估的基本内容,但由于对路基面沉降的物理含义及其工程意义认识不足,其观测成果的运用存在一些谬误之处。结合武广客运专线大量实测数据,简要地分析了路基面沉降特征及表征意义,探讨观测成果的合理应用方法。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。建议了联合路基面沉降观测数据和地基沉降观测数据推算工后沉降的方法。Subgrade surface settlement is a basic content of deformation observation and settlement assessment for railway passenger dedicated line; but the application of observation accomplishment has some falsehood because of insufficient understanding of the physical meaning and engineering significance of subgrade surface settlements. With a large number of settlement observation data of subgrade in Wuhan-Guangzhou railway passenger dedicated line, the settlement characteristics and symbolical meanings of subgrade surface are analyzed; and the reasonable application method of the observation accomplishment is discussed. 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. A calculating method for post-construction settlement is suggested by combining the measured data of subgrade surface settlement and ground settlement.

关 键 词：沉降观测 路基面 铁路客运专线 无砟轨道 

分 类 号：TU478[建筑科学—结构工程]