临沧车站高填方变形的实测分析  

Experimental Analysis on the Deformation of High Fill at Lincang Station

作　　者：吴浩 肖玉林 张春龙 邹华 秦舒桢 李国峰 雷胜友[2] WU Hao;XIAO Yulin;ZHANG Chunlong;ZOU Hua;QIN Shuzhen;LI Guofeng;LEI Shengyou(China Railway Construction 24th Bureau Group Southwest Construction Co.,Ltd.,Chengdu 610000,China;School of Highway,Changan University,Xi’an 710064,China)

机构地区：[1]中铁二十四局集团西南建设有限公司,成都610000 [2]长安大学公路学院,西安710064

出　　处：《科技和产业》2025年第1期30-36,共7页Science Technology and Industry

基　　金：国家自然科学基金(59479017);铁道部科技研究开发项目(2010G003-F);地质灾害防治与地质环境保护国家重点实验室开放基金(GZ2005-03);中铁二十四局科技研发项目。

摘　　要：为了研究大临铁路站场的高填方变形,选择典型断面,在高填方体中埋设4排沉降板以及边坡观测桩,在边坡坡脚部位的土工格栅上布设柔性位移计。通过两年多长期观测,发现铁路站场高填方工程经过长达半年多的施工填筑以及竣工后超过12个月的静置,高填方体的沉降趋于稳定。填筑期间所发生的沉降量占总沉降量的最大百分比为69.05%。左、右边坡观测桩的测试结果显示,高填方的边坡也是稳定的,填土期间发生的沉降量占总沉降的最大比例为99.77%。填土结束后,土工格栅的变形基本稳定,说明边坡是稳定的。建议填筑结束后12个月方可开展后续施工。In order to study the deformation of high fill in the Dalin Railway Station,a typical cross-section was selected.Four rows of settlement plates and slope observation piles were buried in the high fill,and flexible displacement meters were installed on the geogrid at the foot of the slope.After more than two years of observation,it was found that after more than half a year of construction and filling,as well as more than 12 months of standing after completion,the settlement of the high fill tended to stabilize.The maximum percentage of settlement during the filling period to the total settlement is 69.05%.The test results of the observation piles on the left and right slopes show that the high fill slope is also stable,and the maximum proportion of settlement during the filling period is 99.77%of the total settlement.After the filling is completed,the deformation of the geogrid is basically stable,indicating that the slope is also stable.It is recommended to carry out subsequent construction 12 months after the completion of filling.

关 键 词：高填方 沉降量 水平位移 长期观测 施工期 时间效应 

分 类 号：TU528.57[建筑科学—建筑技术科学]