湿陷性黄土地区高速铁路路基沉降预警研究  

Study on Early Warning for Subgrade Settlement of High-speed Railway in Collapsible Loess Regions

作　　者：李俊 卢大玮[3] 李家春 

机构地区：[1]河南高速公路监理咨询有限公司,郑州450000 [2]长安大学特殊地区公路工程教育部重点实验室,西安710064 [3]西安铁路局,西安710064

出　　处：《路基工程》2014年第3期95-99,共5页Subgrade Engineering

基　　金：铁道部科技研究开发计划:郑西高铁湿陷黄土路基沉降监测技术研究(2009G-007-G)

摘　　要：依托郑西高铁客运专线(陕西段),研究了影响路基沉降的主要因素,确定了沉降监测方案,选取累积沉降量和沉降速率作为预警指标;基于实测沉降数据的统计分析和预测分析,并结合路基工后沉降控制标准,对预警指标进行了三级划分,提出了对应的预警方法;开发了铁路路基沉降监测预警系统。为黄土地区高速铁路路基沉降预警提供参考。On the basis of Zhengzhou-Xi＇an high-speed PDL （ Shaanxi Section）, the factors affecting the subgrade settlement were studied, through which the settlement monitoring scheme was determined with accumulated settlement and settling velocity selected as the indicators for early warning. Based on the statistical analysis and prediction based on the measured settlement data, and combined with the control standard for post-construction settlement of subgrade, the early warning indicators were divided into three classes, and the corresponding warning methods were put forward as well. Therefore, the monitoring and early warning system for railway subgrade settlement was developed, which could be referred to in early warning of subgrade settlement of high-speed railway in loess regions.

关 键 词：湿陷性黄土 高速铁路 路基沉降 预警系统 

分 类 号：U213.14[交通运输工程—道路与铁道工程]