Monitoring and numerical simulation of support for foundation pit at Yanyuan Road Station of Lanzhou Metro

YIN Li-jie; LI Yu-jie; ZHU Yan-peng; HUO Bin; YANG Zhi-tuan; DUAN Qin-chuan

doi:10.11779/CJGE2021S1020

Volume 43 Issue S1

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2021 > 43(S1): 111-116. > DOI: 10.11779/CJGE2021S1020

YIN Li-jie, LI Yu-jie, ZHU Yan-peng, HUO Bin, YANG Zhi-tuan, DUAN Qin-chuan. Monitoring and numerical simulation of support for foundation pit at Yanyuan Road Station of Lanzhou Metro[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(S1): 111-116. DOI: 10.11779/CJGE2021S1020

Citation:

PDF (2339 KB)

Monitoring and numerical simulation of support for foundation pit at Yanyuan Road Station of Lanzhou Metro

1.
Beijing Urban Construction Exploration&Surveying Design Research Institute Co., Ltd., Beijing 100101, China
2.
School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
3.
Beijing Key Laboratory of Geotechnical Engineering for Deep Foundation Pit of Urban Rail Transit, Beijing 100101, China
4.
Lanzhou Rail Transit Co., Ltd., Lanzhou 730030, China

More Information

Received Date: December 14, 2020
Available Online: December 05, 2022

Graphical Abstract

Abstract

Abstract

The unique water-rich red sandstone stratum in Lanzhou area is easy to disintegrate when excavated and exposed, and the excavation and dewatering of foundation pits are extremely difficult.There is still no complete design and construction experience for reference.Taking the deep foundation pit at Yanyuan Road Station of Lanzhou Metro as an example, by analyzing the surrounding building environment, engineering geology and hydrological conditions, a suitable supporting structure system of diaphragm wall and internal support for deep foundation pits of red sandstone is put forward.The monitoring data of deformation of supporting structure and surrounding environment during the construction of the foundation pit are analyzed, and the finite element software MIDAS GTS is used to simulate the excavation process.The results show that the deformation of each measuring point is within the safety control range, which means that the selection of supporting structure of the foundation pit is reasonable.They may provide experience and technical support for the design of supporting structure of similar foundation pits of red sandstone encountered in the subsequent construction of Lanzhou Metro.
- metro,
- deep foundation pit,
- pile support,
- construction monitoring,
- numerical simulation,
- displacement

FullText(HTML)

References (7)

References

[1]	赵文, 李慎刚, 徐岩, 等. 地铁基坑施工稳定性监测分析[J]. 岩土力学, 2007, 28(增刊1): 643-646. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2007S1131.htm ZHAO Wen, LI Shen-gang, XU Yan, et al. Monitoring analysis of subway foundation-pit engineering stability[J]. Rock and Soil Mechanics, 2007, 28(S1): 643-646. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX2007S1131.htm
[2]	周勇, 郭楠, 朱彦鹏. 兰州地铁世纪大道站基坑支护监测与数值模拟[J]. 铁道工程学报, 2014, 31(1): 82-88. https://www.cnki.com.cn/Article/CJFDTOTAL-TDGC201401015.htm ZHOU Yong, GUO Nan, ZHU Yan-peng. Construction monitoring and numerical simulation of deep excavation of century avenue metro station in Lanzhou[J]. Journal of Railway Engineering Society, 2014, 31(1): 82-88. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDGC201401015.htm
[3]	张波. 兰州盆地第三系砂岩工程地质特性评价研究[J]. 工程地质学报, 2014, 22(1): 166-172. ZHANG Bo. Evalution of the engineeringgeologicalconditionofnsandstone in Lanzhou basin[J]. Journal of Engineering Geology, 2014, 22(1): 166-172. (in Chinese)
[4]	王惠君. 兰州特殊红砂岩地层地铁深基坑桩撑支护结构施工力学行为分析[D]. 兰州: 兰州理工大学, 2019. WANG Hui-jun. Construction mechanics behavior analysis of pile-strut supporting structure of subway deep foundation pit in Lanzhou special red sandstone formation[D]. Lanzhou: Lanzhou University of Technology, 2019. (in Chinese)
[5]	俞建霖, 龚晓南. 基坑工程变形性状研究[J]. 土木工程学报, 2002, 35(4): 86-90. https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC200204015.htm YU Jian-lin, GONG Xiao-nan. Research on deformation of foundation-pit engineering[J]. China Civil Engineering Journal, 2002, 35(4): 86-90. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC200204015.htm
[6]	李云安. 深基坑工程变形控制优化设计及其有限元数值模拟系统研究[J]. 岩石力学与工程学报, 2001, 20(3): 421. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200103038.htm LI Yun-an. Research system of optimized design with deformation control and numerical simulation with finite element of deep excavation engineering[J]. Journal of rock mechanics and Engineering, 2001, 20(3): 421. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200103038.htm
[7]	CLOUGH G W, HANSEN L A. Clay anisotropy and braced wall behavior[J]. Journal of the Geotechnical Engineering Division, 1981, 107(7): 893-913.