饱和软黄土高水位地区深基坑钢支撑轴力监测与分析
  • 作者: 张亚龙,张博望,张书敏,等
论文摘要

饱和软黄土高水位地区深基坑钢支撑轴力监测与分析*

张亚龙1,张博望1,张书敏2,宋奇昱2 

(1.中铁七局集团西安铁路工程有限公司,陕西 西安 7100322.西安建筑科技大学土木工程学院,陕西 西安 710055)

[摘要]西安地铁6号线东兴区间竖井深基坑紧邻兴庆湖,处于西安饱和软黄土的发育核心区域,因此深基坑工程支护结构既是工程的关键也是重难点。利用有限元软件对深基坑组合支撑轴力进行预分析,结合现场监测数据进行对比,分析了深基坑施工过程中支撑轴力的动态变化趋势以及轴力异常原因,并对深厚软黄土地区深基坑开挖提出施工建议。

[关键词]地铁;饱和软黄土;深基坑;支撑轴力;监测;数值模拟

[中图分类号]TU753    [文献标识码]A    [文章编号]1002-8498(2021)04-0087-04

Monitoring and Analysis of the Axial Force of Steel Support for Deep Foundation Excavation in Saturated Soft Loess with High Water Level

ZHANG Yalong1, ZHANG Bowang1, ZHANG Shumin2, SONG Qiyu2 

(1.Xian Railway Engineering Co., Ltd. of China Railway Seventh Group Co., Ltd., Xian, Shaanxi 710032, China; 2. College of Civil Engineering, Xian University of Architecture and Technology, Xian, Shaanxi 710055, China)

Abstract: The deep foundation excavation of the shaft in Dongxing section of Xian Metro Line 6 is close to Xingqing Lake and located in the core area of saturated soft loess development in Xian. Therefore, the supporting structure of the deep foundation excavation project is both the key and the difficult part of the project. In this paper, the finite element software is used to pre analyze the axial force of deep foundation excavation, and the dynamic change trend of the axial force and the reasons for the abnormal axial force are analyzed by comparing the monitoring data in the field, and some construction suggestions for the deep foundation excavation in deep soft loess area are put forward.  

Keywords:subways; saturated soft loess; deep foundation excavation; axial forces; monitoring;  simulation

*陕西省重点研发计划项目(2020SF-373

[作者简介]张亚龙,工程师,Email: 278716337@qq.com  

 

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