沉管隧道地基砂流法处理的充满度试验及分析

蒋钦权; 谷任国; 邓磊; 房营光

doi:10.13204/j.gyjzG21062306

沉管隧道地基砂流法处理的充满度试验及分析

doi: 10.13204/j.gyjzG21062306

1. 广州公路工程集团有限公司, 广州 510635;
2. 华南理工大学土木与交通学院, 广州 510640

基金项目:

国家重点科学仪器设备开发项目(41827807)。

详细信息

作者简介:
蒋钦权,男,1989年出生,工程师。

通讯作者:
房营光,男,1958年出生,博士,教授,博士生导师,ygfang01@gmail.com。

计量
- 文章访问数: 99
- HTML全文浏览量: 17
- PDF下载量: 1
- 被引次数: 2
出版历程
- 收稿日期: 2021-06-23

Experiment and Analysis of Filling Degrees in Foundation of Immersed Tube Tunnels Treated by the Sand Flow Method

1. Guangzhou Highway Engineering Company, Guangzhou 510635, China;
2. South China University of Technology, School of Civil Engineering and Transportation, Guangzhou 510640, China

摘要

摘要: 针对沉管隧道砂流法地基处理过程中沉管上抬、沉管底板粗糙度及不同注砂顺序对砂盘最终扩展半径及间隙填充的影响,建立砂流法足尺试验模型,并通过测量计算砂盘顶面充满度、体积充满度及砂盘半径充满度,探讨上述工况对砂盘扩展均衡性及质量的影响。结合砂盘扩展规律分析表明:管段上抬对砂盘扩展不利,充满度较低,砂盘扩展均衡性及质量较差;管段底面采用光滑的材质,有利于砂盘扩展,充满度较高,可提高砂盘的扩展均衡性及质量;不同注砂顺序造成的适当的边界封堵,有益于提高砂盘的充满度,改善砂盘的扩展均衡性及质量,对最终砂盘扩展均衡性和间隙填充质量无不利影响。
- 隧道工程 /
- 地基处理 /
- 砂流法 /
- 模型试验 /
- 砂盘
Abstract: According to the influence of the lifting for immersed tubes, the roughness for bottom plates of immersed tubes and different injection sequences on the final expansion radius and gap filling of sand-deposite in the process of foundation treatment for immersed tube tunnels by the sand flow method, a full-scale test model of the sand flow method was constructed, and the influences of the above conditions on the expansion equilibrium and quality for sand-deposite were discussed by measuring and calculating filling degrees of the top surface, volume and radius of sand-deposite. Combined with the analysis of the expansion laws of sand-deposite, it was shown that the upward lifting of the pipe section was unfavourable to the expansion of sand-deposite, lower the filling degree was, poorer the expansion equilibrium and quality of sand-deposite were; the smooth material was used at the bottom of the pipe sections, which was conducive to expansion of sand-deposite and had a high filling degree and could improve the expansion equilibrium and quality of sand-deposite; the appropriate boundary sealing caused by different sand injection sequences would benefitted the improvement on filling degree of sand-deposite, improve the expansion equilibrium and quality of sand-deposite, and had no adverse effect on the final expansion equilibrium and filling quality of sand-deposite in gaps.
- tunnel engineering /
- foundation treatment /
- the sand flow method /
- model test /
- sand-deposite

HTML全文

参考文献(22)

[1]	孙钧.海底隧道工程设计施工若干关键技术的商榷[J].岩石力学与工程学报,2006,25(8):1513-1521.
[2]	王梦恕.水下交通隧道发展现状与技术难题:兼论"台湾海峡海底铁路隧道建设方案"[J].岩石力学与工程学报,2008,27(11):2161-2172.
[3]	管敏鑫.沉管隧道在越江工程中的地位以及有关的新认识[J].现代隧道技术,2004,41(1):1-4.
[4]	KUESEL T R.Alternative concepts for undersea tunnels[J].Tunnelling and Underground Space Technology,1986,1(1):283-287.
[5]	陈韶章,陈越,张弥.沉管隧道设计与施工[M].北京:科学出版社,2002:278-312.
[6]	GRANTZ W.Immersed tunnel settlements:part 2:Case histories[J].Tunn.Undergr.Space Technol,2001,16:203-210.
[7]	张庆贺,高卫平.水域沉管隧道基础处理方法的对比分析[J].岩土力学,2003,24(增刊2):349-352.
[8]	GLERUM A.Developments in immersed tunnelling in Holland[J].Tunnelling and Underground Space Technology,1995,10(4):455-462.
[9]	LI Y,CUI J,MO H,et al.Sand deposit arrangement and construction optimization for large-section immersed tube tunnel foundations via the sand flow method[J].Soil Mech.Found.Eng.,2017,54:324-329.
[10]	WANG S,ZHANG X,BAI Y.Comparative study on foundation treatment methods of immersed tunnels in China[J].Front.Struct.Civ.Eng.,2020,14:82-93.
[11]	WENG X,FENG Y,LOU Y.The mechanical performance of shear key of immersed tube tunnel with differential foundation settlement[J].Journal of Sensors,2015,2016:1-9.
[12]	WEI G,SU Q.Application of three-parameter model in settlement calculation of immersed tube tunnel[J].Applied Mechanics& Materials,2013,470:298-303.
[13]	VAN TONGEREN I H.The foundation of immersed tunnels[C]//Delta Tunnelling Symposium.1978:48-57.
[14]	黎志均.珠江隧道工程基础灌砂试验研究[J].中国港湾建设,2001(1):18-20.
[15]	郑爱元,谭忠盛,李治国.沉管隧道基础灌砂模拟试验[J].中国工程科学,2009,11(7):81-85.
[16]	LI W,FANG Y,MO H,et al.Sand deposit-detecting method and its application in model test of sand flow[J].Journal of Central South University,2013,20(10):2840-2848.
[17]	莫海鸿,房营光,黎伟,等.砂流法处理沉管隧道地基的模型试验方法[J].广东土木与建筑,2011,18(3):14-17.
[18]	莫海鸿,黎伟,房营光,等.沉管隧道底板面材质对砂流法地基影响的模型试验研究[J].岩石力学与工程学报,2012,31(7):1452-1461.
[19]	房营光,黎伟,莫海鸿,等.沉管隧道地基砂流法处理的砂盘扩展规律试验与分析[J].岩石力学与工程学报,2012,31(1):206-216.
[20]	LI W,FANG Y,MO H,et al.Model test of immersed tube tunnel foundation treated by sand-flow method[J].Tunnelling and Underground Space Technology,2014,40:102-108.
[21]	黎伟.沉管隧道地基砂流法加固的足尺试验及其机理研究[D].广州:华南理工大学,2013.
[22]	马建,黄彦平,黄军.窄间隙矩形通道单相水纵向涡可视化实验研究[J].核动力工程,2011,32(1):85-88.