Influence of Seasonal Rainfall Changes on Subgrade Settlement during Operation of High-Speed Railway in the Yangtze River Delta
CUI Shuzhe1, ZHOU Jinguo2
(1. School of Geology and Surveying and Mapping Engineering, Chongqing Vocational Institute of Engineering, Chongqing 402260, P.R.China; 2. Chongqing Institute of Surveying and Mapping, NASG, Chongqing 400015, P.R.China)
Abstract:Firstly, the influence factors of the inhomogeneous subgrade settlement of high-speed railway were listed and analyzed. With the monitoring data of typical subgrade settlement of high-speed railway in the Yangtze River Delta and the time variation data of seasonal rainfall at the correspondingly monitoring region, the internal relation between the inhomogeneous subgrade settlement of high speed railway and the changes of subgrade moisture content and seasonal rainfall was analyzed. The studies show that seasonal rainfall results in the water content increase of embankment and subgrade in monitoring area, which changes the internal mechanical properties and causes the settlement. Therefore, the settlement during operation of high-speed railway subgrade in monitoring area presents seasonal characteristics with the annual rainfall variation. The above conclusion provides a useful reference for railway subgrade treatment and other rail maintenance.
崔书珍 ,周金国. 季节性降雨变化对长三角高速铁路路基工后沉降影响分析[J]. 重庆交通大学学报(自然科学版), 2016, 35(3): 58-60.
CUI Shuzhe, ZHOU Jinguo. Influence of Seasonal Rainfall Changes on Subgrade Settlement during Operation of High-Speed Railway in the Yangtze River Delta. Journal of Chongqing Jiaotong University(Natural Science), 2016, 35(3): 58-60.
[1] 罗庄.高速铁路运营期沉降监测技术及管理探讨[J].上海铁道科技,2013(2):82-84.
LUO Zhuang. Discussion on monitoring technique and management during operation of high speed railway[J]. Shanghai Railway Science & Technology, 2013(2):82-84.
[2] 颜春.填方路基不均匀沉降原因分析及处治措施[J].重庆交通学院学报,2003,22(1):63-68.
YAN Chun. The analysis for filled subgrade works’ inhomogeneous settlement and the disposal measures[J].Journal of Chongqing Jiaotong University, 2003,22(1):63-78.
[3] 铁道第三勘察设计院集团有限公司. 高速铁路设计规范(试行):TB 10621—2009[S].北京:中国铁道出版社,2010.
The Third Railway Survey and Design Institute Group Corporation. Code for Design of High Speed Railway:TB 10621—2009[S]. Beijing: China Railway Publishing House,2010.
[4] 詹永祥.桩板结构路基沉降影响因素的有限元分析[J].路基工程,2007(3):12-14.
ZHAN Yongxiang. Finite element analysis of the affecting factors on pile-board subgrade settlement[J]. Subgrade Engineering, 2007(3): 12-14.
[5]ZHANG Dingwen. Water content and modulus relationship of a compacted unsaturated soil[J]. Journal of Southeast University (English Edition), 2012,28(2):209-214.
[6]袁俊平.含水率和压实度对路基填土力学特性的影响[J].水利与建筑工程学报,2013, 11(2):98-102.
YUAN Junping. Effects of water content and compaction degree on mechanical characteristics of roadbed[J]. Journal of Water Resources and Architectural Engineering,2013,11(2):98-102.
[7]李金明.气温升高对多年冻土地区路基稳定性影响[J].重庆交通大学学报(自然科学版),2011,30(2):83-85.
LI Jinming. Impact of climate warming on subgrade stabilization in permafrost areas[J]. Journal of Chongqing Jiaotong University (Natural Science), 2011,30(2):83-85.
[8]刘建峰.桩土界面摩擦特性试验研究[D].天津:天津大学,2008.
LIU Jianfeng. Experimental Study on Friction Characteristics of Pile and Soil[D]. Tianjin: Tianjin University,2008.