|Table of Contents|

Comparison of foundation pit optimization schemes of cross oblique transfer station(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2023年01期
Page:
150-158
Research Field:
基础工程
Publishing date:

Info

Title:
Comparison of foundation pit optimization schemes of cross oblique transfer station
Author(s):
ZHONG Zhiwu
(China Railway 18th Bureau Group Corporation Limited, Tianjin 300222, China)
Keywords:
transfer station;  optimization scheme;  numerical simulation;  foundation pit excavation
PACS:
TU973.2
DOI:
10.19815/j.jace.2021.08062
Abstract:
The plane of the transfer station of Tianjin Rail Transit Line 6 and Line 8 is cross oblique. The depths of the foundation pit of the two stations are large and different, the support schemes are complex, the construction risk is high, and the original construction scheme cannot be promoted due to the problem of pipeline cutting. Aiming at the transfer station, three optimization schemes of horizontal bracing, reverse excavation and reserved earthwork were put forward. Through the combination of finite element simulation and theoretical analysis, these schemes were compared and analyzed from three aspects of structural safety, construction technology and construction period. The results show that for the complex special-shaped transfer station, the horizontal bracing scheme will lead to uneven deformation of the retaining structure and high risk of leakage. Although the structure by reverse excavation is simple, but the construction is difficult, equipment investment is high, and construction period is long. The reserved earthwork scheme divides the transfer station into several independent foundation pits. If the construction sequence is reasonably coordinated, it is technically safer and more reliable, and the construction period is better. The research results can provide reference for the design and selection of the construction scheme of oblique transfer station under other complex conditions, and have certain significance for promoting the construction of major rail transit projects.

References:

[1] 刘 毅,张 勇,袁 青,等.邻近边坡地铁车站基坑顺逆结合施工稳定性分析[J].西安建筑科技大学学报(自然科学版),2019,51(6):873-881.
LIU Yi,ZHANG Yong,YUAN Qing,et al.Analysis on the stability of bias metro station pit excavated through the combination method of bottom-up and top-down technology[J].Journal of Xi'an University of Architecture & Technology(Natural Science Edition),2019,51(6):873-881.
[2]刘宝奎,尚艳亮,隆 卫,等.城市繁华区大规模T形盖挖地铁车站基坑开挖出土技术研究[J].施工技术,2020,49(7):9-12,103.
LIU Baokui,SHANG Yanliang,LONG Wei,et al.Research on excavation technology of large scale T-type covered subway station foundation excavation in downtown area[J].Construction Technology,2020,49(7):9-12,103.
[3]刘 亮.T型换乘地铁车站续建基坑开挖对运营结构的影响分析及对策[J].隧道建设,2015,35(3):244-249.
LIU Liang.Analysis on influence of cutting of foundation pit on existing structure:case study on cutting of a T-shaped transfer metro station[J].Tunnel Construction,2015,35(3):244-249.
[4]孔 超,陈书勇,张俊儒,等.流变地层地铁换乘站复合盖挖法施工力学分析[J].地下空间与工程学报,2014,10(1):128-135.
KONG Chao,CHEN Shuyong,ZHANG Junru,et al.Study on mechanical theory of compound cover method for metro transfer station in rheological stratum[J].Chinese Journal of Underground Space and Engineering,2014,10(1):128-135.
[5]MUHAMMAD R A T M,RAJASEKARAN C.Performance of deep excavation for an underground metro station constructed by top-down method:a case study[J].Sustainable Construction and Building Materials,2019,25:611-618.
[6]刘 泽.承压水地层中施工换乘车站盖挖半逆作法的关键技术研究[D].成都:西南交通大学,2014.
LIU Ze.The study of transfer subway key construction technology and semi-inversed cover excavation method in confined water layer[D].Chengdu:Southwest Jiaotong University,2014.
[7]雷 蒙.成都地铁骡马市换乘站开挖对既有结构影响研究[D].北京:中国地质大学(北京),2018.
LEI Meng.Study on the influence of excavation on the existing structure of Chengdu metro Luomashi transfer station[D].Beijing:China University of Geosciences(Beijing),2018.
[8]王怀东,刘方明,彭红霞.新建地铁站基坑临近及无覆土下穿运营地铁站安全技术措施研究[J].隧道建设(中英文),2018,38(11):1836-1845.
WANG Huaidong,LIU Fangming,PENG Hongxia.Safe construction technologies for newly-built metro station foundation pit closely crossing underneath adjacent operation metro station[J].Tunnel Construction,2018,38(11):1836-1845.
[9]高太平,闫建龙,沈宇鹏,等.北京地铁19号线新宫站狭长基坑阳角效应分析[J].铁道建筑技术,2018(11):62-66.
GAO Taiping,YAN Jianlong,SHEN Yupeng,et al.Analysis of the external corner effect of narrow deep foundation pit in Xingong station of Beijing subway line 19[J].Railway Construction Technology,2018(11):62-66.
[10]张光建,姚小波,胡 瑾.地铁换乘车站基坑支撑轴力监测与数值模拟[J].岩土工程学报,2014,36(增2):455-459.
ZHANG Guangjian,YAO Xiaobo,HU Jin.Monitoring and numerical simulation of axial forces of struts for foundation pit of a metro transfer station[J].Chinese Journal of Geotechnical Engineering,2014,36(S2):455-459.
[11]孙九春.基于土压力平衡设计的地铁预留十字换乘节点车站施工方案研究[J].施工技术,2017,46(22):105-107.
SUN Jiuchun.Research on construction scheme of metro reserved cross transfer station based on earth pressure balance design[J].Construction Technology,2017,46(22):105-107.
[12]赵广民,何树宪,朱佳友.基于地铁运营安全的X形垂直换乘车站分期施工研究[J].施工技术,2016,45(9):106-108.
ZHAO Guangmin,HE Shuxian,ZHU Jiayou.Construction research by stages of X-shape vertical transfer station based on safety of subway operation[J].Construction Technology,2016,45(9):106-108.
[13]WANG Z,WANG C.Analysis of deep foundation pit construction monitoring in a metro station in Jinan city[J].Geotechnical and Geological Engineering,2019,37(2):813-822.
[14]胡安峰,张光建,王金昌,等.地铁换乘车站基坑围护结构变形监测与数值模拟[J].岩土工程学报,2012,34(增):77-81.
HU Anfeng,ZHANG Guangjian,WANG Jinchang,et al.Monitoring and numerical simulation of deformation of retaining structure excavation of a metro transfer station[J].Chinese Journal of Geotechnical Engineering,2012,34(S):77-81.
[15]LIAO S,FAN Y,SHI Z,et al.Optimization study on the reconstruction and expansion of an underground rail transit center in Shanghai soft ground[J].Tunnelling and Underground Space Technology,2013,38,435-446.
[16]WANG Z C,GUO X P,WANG C.Field monitoring analysis of construction process of deep foundation pit at subway station[J].Geotechnical and Geological Engineering,2019,37(2):549-559.
[17]XU P,HAN Y W,DUAN H H,et al.Environmental effects induced by deep subway foundation pit excavation in Yellow River alluvial landforms[J].Geotechnical and Geological Engineering,2015,33(6):1587-1594.
[18]LIU Y L.Numerical analysis of the deformation law of deep foundation pit of subway station by FLAC 3D[J]. Advanced Materials Research,2014,915-916:62-67.
[19]ZHANG H Z,FENG Y F.Study on the deformation characteristics of supporting system of deep foundation pit in subway station construction[J].Advanced Materials Research,2011,243-249:546-551.
[20]BAI Y,CUI P B,WU J B,et al.Study on simulation analysis of excavation deep foundation pit in Qingnian Road station of Tianjin subway line 2[J].Applied Mechanics and Materials,2014,580-583:1112-1115.

Memo

Memo:
-
Last Update: 2023-01-01