|Table of Contents|

Construction and measurement analysis of freezing method for 60 m level super long connecting passage(PDF)

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

Issue:
2023年06期
Page:
148-156
Research Field:
桥梁工程
Publishing date:

Info

Title:
Construction and measurement analysis of freezing method for 60 m level super long connecting passage
Author(s):
WU Yongzhe1 ZHU Zexuan2 YANG Ping2 LIU Hongwei1 WU Wenliang1
(1. CCCC Tunnel Engineering Company Limited, Nanjing 210007, Jiangsu, China; 2. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China)
Keywords:
super long connecting passage freezing method temperature field frost heave thaw settlement measurement analysis
PACS:
TU445
DOI:
10.19815/j.jace.2021.11039
Abstract:
In order to comprehensively grasp the freezing temperature field, frost heave and thaw settlement deformation laws of the 60 m level super long connecting passage, and accumulate experience for similar projects in the future, the temperature and deformation measurement research was conducted on the freezing method construction process of the 66 m super long connecting passage between Ziyang station and Wuliting station on Fuzhou metro line 2. The construction process, freezing temperature, and formation deformation law of the super long connecting passage were analyzed through actual measurement, and the characteristics that were different from conventional connecting passages were summarized. The results show that compared with conventional connecting passages, super long connecting passages require a series of optimizations and improvements in terms of structural design, freezing scheme, construction technology, and other aspects to ensure the smooth completion of freezing construction while also considering economic efficiency. During the freezing and cooling process, the development rate of freezing inward is 1.75 times that of outward development. There is a difference in the law between the measurement points at the oblique freezing pipe and the conventional connecting passage in the silt and sand layer. The temperature of the measuring point in the overlapping area of the frozen tube is lower than that in the non overlapping area. Due to the larger volume of frozen soil, the surface uplift and settlement are larger compared to conventional connecting passage, and the impact range is wider. The smaller the distance between the measuring points on the same section and the centerline of the tunnel, the greater the displacement. When the measuring point exceeds the centerline of the tunnel by 20 m, the amount of frost heave and thaw settlement is relatively small. The frost heave and thawing settlement of point D5-4 at the centerline are 2.8 times and 2.3 times that of point D5-1 at a distance of 20 m from the centerline. The maximum frost heave and thaw settlement of each section occurs at the centerline of the tunnel and is distributed along the centerline of the connecting passage. Due to the large volume of frozen soil at the end section of the connecting channel, its frost heave and thawing settlement are 1.6 times and 1.7 times that of the centerline, which is different with conventional connecting passage.

References:

[1] 杨 平,佘才高,董朝文,等.人工冻结法在南京地铁张府园车站的应用[J].岩土力学,2003,24(增2):388-391.
YANG Ping,SHE Caigao,DONG Chaowen,et al.Application of artificial freezing method in Zhangfuyuan station of Nanjing subway[J].Rock and Soil Mechanics,2003,24(S2):388-391.
[2]刘健鹏,杨 平,何文龙,等.盾构下穿敏感性建筑的管棚+水平冻结接收技术[J].铁道科学与工程学报,2017,14(10):2194-2202.
LIU Jianpeng,YANG Ping,HE Wenlong,et al.Shield receiving technology of pipe-roof grouting and horizontal freezing entrancing beneath sensitive buildings[J].Journal of Railway Science and Engineering,2017,14(10):2194-2202.
[3]张 志,张 勇,陆 路,等.冻结法在强扰动地层地铁联络通道施工中的应用[J].隧道建设,2011,31(1):114-120.
ZHANG Zhi,ZHANG Yong,LU Lu,et al.Application of freezing method in construction of connection galleries of metro works in intensely-disturbed ground[J].Tunnel Construction,2011,31(1):114-120.
[4]奚家米,熊元林,马新民,等.地铁联络通道冻结法施工研究现状[J].科学技术与工程,2020,20(17):6720-6728.
XI Jiami,XIONG Yuanlin,MA Xinmin,et al.Research status of freezing method construction of subway contact passage[J].Science Technology and Engineering,2020,20(17):6720-6728.
[5]黄建华,严耿明,杨鹿鸣.水泥改良土地层联络通道冻结温度场分析[J].土木工程学报,2021,54(5):108-116.
HUANG Jianhua,YAN Gengming,YANG Luming.Analysis of freezing temperature field in connecting passage of cement improved soil layer[J].China Civil Engineering Journal,2021,54(5):108-116.
[6]ZHAO J L,YANG P,LI L.Investigating influence of metro jet system hydration heat on artificial ground freezing using numerical analysis[J].KSCE Journal of Civil Engineering,2021,25(2):724-734.
[7]郑立夫,高永涛,周 喻,等.浅埋隧道冻结法施工地表冻胀融沉规律及冻结壁厚度优化研究[J].岩土力学,2020,41(6):2110-2121.
ZHENG Lifu,GAO Yongtao,ZHOU Yu,et al.Research on surface frost heave and thaw settlement law and optimization of frozen wall thickness in shallow tunnel using freezing method[J].Rock and Soil Mechanics,2020,41(6):2110-2121.
[8]李晓娜,杨双锁,鲍飞翔,等.盾构始发端垂直冻结温度场数值分析与现场实测[J].科学技术与工程,2020,20(1):297-302.
LI Xiaona,YANG Shuangsuo,BAO Feixiang,et al.Numerical analysis and field measurement of vertical freezing temperature field at the beginning of shield tunneling[J].Science Technology and Engineering,2020,20(1):297-302.
[9]胡向东,李忻轶,吴元昊,等.拱北隧道管幕冻结法管间冻结封水效果实测研究[J].岩土工程学报,2019,41(12):2207-2214.
HU Xiangdong,LI Xinyi,WU Yuanhao,et al.Effect of water-proofing in Gongbei tunnel by freeze-sealing pipe roof method with field temperature data[J].Chinese Journal of Geotechnical Engineering,2019,41(12):2207-2214.
[10]赵宇辉,杨 平,王 宁,等.下穿车站交叠区域MJS+水平冻结加固解冻温度场研究[J].林业工程学报,2021,6(4):159-166.
ZHAO Yuhui,YANG Ping,WANG Ning,et al.Study on MJS+horizontal freezing reinforcement and thawing temperature field in the overlapped area of the underpass station[J].Journal of Forestry Engineering,2021,6(4):159-166.
[11]WU Y J.A study on frost heave and thaw settlement of soil subjected to cyclic freeze-thaw conditions based on hydro-thermal-mechanical coupling analysis[J].Cold Regions Science and Technology,2021,188:103296.
[12]李治国,徐海廷,杨世彦.富水砂层中盾构隧道联络通道施工技术[J].隧道建设,2017,37(5):609-617.
LI Zhiguo,XU Haiting,YANG Shiyan.Construction technology for cross passage of shield tunnel in water-rich sandy stratum[J].Tunnel Construction,2017,37(5):609-617.
[13]覃 伟,杨 平,金 明,等.地铁超长联络通道人工冻结法应用与实测研究[J].地下空间与工程学报,2010,6(5):1065-1071.
QIN Wei,YANG Ping,JIN Ming,et al.Application and survey analysis of freezing method applied to ultra-long connected aisle in metro tunnel[J].Chinese Journal of Underground Space and Engineering,2010,6(5):1065-1071.
[14]杨 平,陈 瑾,张尚贵,等.软弱地层联络通道冻结法施工温度及位移场全程实测研究[J].岩土工程学报,2017,39(12):2226-2234.
YANG Ping,CHEN Jin,ZHANG Shanggui,et al.Whole range monitoring for temperature and displacement fields of cross passage in soft soils by AGF[J].Chinese Journal of Geotechnical Engineering,2017,39(12):2226-2234.
[15]胡向东,肖朝昀,毛良根.双层越江隧道联络通道冻结法温度场影响因素[J].地下空间与工程学报,2009,5(1):7-12.
HU Xiangdong,XIAO Zhaoyun,MAO Lianggen.The influencing factor of the temperature field of cross-passage construction by freezing method in double-deck road tunnels[J].Chinese Journal of Underground Space and Engineering,2009,5(1):7-12.
[16]马 俊,胡导云,杨 平.平面斜交联络通道水平冻结及实测分析[J].隧道建设(中英文),2019,39(12):1965-1972.
MA Jun,HU Daoyun,YANG Ping.Horizontal freezing and measurement analysis of plane oblique connection gallery[J].Tunnel Construction,2019,39(12):1965-1972.
[17]陈军浩,刘桐宇,张潮潮,等.超长联络通道冻结温度场发展特性研究[J].铁道科学与工程学报,2019,16(12):3059-3067.
CHEN Junhao,LIU Tongyu,ZHANG Chaochao,et al.Analyzing development characteristics of freezing temperature field to ultra-long connected aisle[J].Journal of Railway Science and Engineering,2019,16(12):3059-3067.
[18]YANG P,KE J M,WANG J G,et al.Numerical simulation of frost heave with coupled water freezing,temperature and stress fields in tunnel excavation[J].Computers and Geotechnics,2006,33(6/7):330-340.
[19]严 晗,王天亮,刘建坤.粉砂土反复冻胀融沉特性试验研究[J].岩土力学,2013,34(11):3159-3165.
YAN Han,WANG Tianliang,LIU Jiankun.Experimental study of repeated frost heave and thaw settlement properties of silty sand[J].Rock and Soil Mechanics,2013,34(11):3159-3165.
[20]刘 波,李东阳,廖建军.土体压力对地铁旁通道解冻后地表沉降的影响[J].煤炭学报,2011,36(4):551-555.
LIU Bo,LI Dongyang,LIAO Jianjun.The effect of earth pressure on ground settlement after frozen soil thawing inconnect aisle construction of metro engineering[J].Journal of China Coal Society,2011,36(4):551-555.

Memo

Memo:
-
Last Update: 2023-12-01