四线并行盾构隧道下穿火车站股道沉降特征研究

doi:10.13722/j.cnki.jrme.2017.0420

摘要
图/表
参考文献(20)
相关文章 (15)

全文: PDF (451 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要

为了探究南宁地铁1，2号线四线并行盾构下穿火车站股道的沉降特征，建立基于叠加技术的Peck公式。利用Peck公式，分别计算每条隧道引起股道附加沉降，叠加各条曲线得到的沉降槽作为四线并行盾构掘进引起的股道总沉降，并分析2号线盾构施工沉降超限的原因。结果表明：叠加技术能够应用于四线盾构隧道引起股道沉降的计算，叠加得到的总沉降与自动化监测的结果基本一致，后行隧道引起的附加沉降槽的轴线向四线隧道中线发生偏移，但总的沉降槽轴线处于四线隧道中线处；给出富水圆砾地层中盾构推进导致地表沉降槽宽度系数范围，建议四线并行盾构隧道下穿重要风险源时，地层损失率控制在0.4%以内；泥岩的存在导致了2号线盾构在穿越13股道和11股道时发生沉降超限，合理提高开挖面泥水压力并减小压力波动，减缓盾构掘进速度并适当提高注浆压力是控制沉降的关键。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王强1
	2
	谢雄耀1
	2
	黄钟晖3
	齐勇4

关键词 ：隧道工程, 四线并行盾构隧道, 叠加技术, Peck公式, 地表沉降, 土体损失

Abstract：

In order to investigate the settlement characteristic of quadruple-tube parallel shield tunnels(QTPST) crossing railway tracks in Nanning metro line 1 and 2，a modified Peck formula based on superposition technique is conducted. It appears that one can construct additional settlement induced by each tunnel using the Gaussian function and combine the four curves to obtain a total settlement trough as the total settlement induced by QTPST. The filed results indicate that the superposition technique can describe the settlement trough induced by QTPST appropriately，which coincide well with the automatic monitoring results. There is an offset of the additional settlement trough from the axis of the related tunnel to the centerline of QTPST in transverse section while the total settlement trough is almost symmetric around the centerline of QTPST. The settlement trough width parameters are put forward as well as the ground loss ratio. A value of ground loss ratio is suggested smaller than 0.4% when QTPST crossing crucial buildings with high risk. By analyzing the tunnelling parameters of metro line 1 and 2，it is found that the existence of mudstone is the main reason that caused the extreme settlement when metro line 2 crossing track no. 13 and 11. It is beneficial to make the slurry pressure in tunnel face under control，slow down the advance speed and increase the synchronous grouting pressure for settlement control.

Key words： tunnelling engineering quadruple-tube parallel shield tunnels superposition technique Peck formula surface settlement ground loss

引用本文:

王强1，2，谢雄耀1，2，黄钟晖3，齐勇4. 四线并行盾构隧道下穿火车站股道沉降特征研究[J]. 岩石力学与工程学报, 2017, 36(S2): 4235-4243.
WANG Qiang1，2，XIE Xiongyao1，2，HUANG Zhonghui3，QI Yong4. Study of settlement troughs over quadruple-tube parallel shield tunnels crossing railway tracks. , 2017, 36(S2): 4235-4243.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2017.0420 或 https://rockmech.whrsm.ac.cn/CN/Y2017/V36/IS2/4235

[1]	袁海平，王斌，朱大勇，等. 盾构近距侧穿高架桥桩的施工力学行为研究[J]. 岩石力学与工程学报，2014，33(7)：1457-1464. (YUAN Haiping，WANG Bin，ZHU Dayong，et al. Mechanical behaviours of a shield tunnel adjacent to existing viaduct pile foundations[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)：1457-1464.(in Chinese))
[2]	MOONEY M，GRASMICK J，CLEMMENSEN A，et al. Ground deformation from multiple tunnel openings：analysis of queens bored tunnels[C]//Proceedings of theNorth American Tunneling. Los Angeles，California，USA：[s. n.]，2014：397-406.
[3]	徐礼华，艾心荧，余佳力，等. 厦门机场路隧道施工对砌体结构建筑物的影响分析[J]. 岩石力学与工程学报，2010，29(3)：583-592.(XU Lihua，AI Xinying，YU Jiali，et al. Analysis of impact of tunnel construction on masonry buildings in Xiamen airport road[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(3)：583-592. (in Chinese))
[4]	XIE XY，YANG YB，JI M. Analysis of ground surface settlement induced by the construction of a large-diameter shield-driven tunnel in Shanghai，China[J]. Tunnelling and Underground Space Technology，2016，51：120-132.
[5]	谢雄耀，王强，刘欢，等. 富水圆砾地层盾构下穿火车站股道沉降控制技术研究[J]. 岩石力学与工程学报，2016，35(增2)：3960- 3970.(XIE Xiongyao，WANG Qiang，LIU Huan，et al. Settlement control study of shield tunneling crossing railway station in round gravel strata[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.2)，3960-3970.(in Chinese))
[6]	HE C，FENG K，FANG Y，et al. Surface settlement caused by twin-parallel shield tunnelling in sandy cobble strata[J]. Journal of Zhejiang University-SCIENCE A，2012，13(11)：858-869.
[7]	CHEN SL，GUI MW，YANG MC. Applicability of the principle of superposition in estimating ground surface settlement of twin-and quadruple-tube tunnels[J]. Tunnelling and Underground Space Technology，2012，28：135-149.
[8]	蒋胜光，张子新. 圆砾地层双线盾构施工参数及沉降特征分析[J]. 地下空间与工程学报，2015，11(增2)：698-705.(JIANG Shengguang，ZHANG Zixin. Analysis of boring parameters and ground settlement characteristics during double-line tunneling in circular-gravel layer[J]. Chinese Journal of Underground Space and Engineering，2015，11(Supp.2)：698-705.(in Chinese))
[9]	PECK R B. Deep excavations and tunnelling in soft ground[C]//Proceeding of the 7th International Conference on Soil Mechanics and Foundation Engineering. Mexico City，Mexico：[s. n.]，1969：225-290.
[10]	SUWANSAWAT S，EINSTEIN H H. Describing settlement troughs over twin tunnels using a superposition technique[J]. Journal of Geotechnical and Geoenvironmental Engineering，2007，133(4)：445-468.
[11]	陈春来，赵城丽，魏纲，等. 基于Peck公式的双线盾构引起的土体沉降预测[J]. 岩土力学，2014，35(8)：2212-2218.(CHEN Chunlai，ZHAO Chengli，WEI Gang，et al. Prediction of soil settlement induced by double-line shield tunnel based on Peck formula[J]. Rock and Soil Mechanics，2014，35(8)：2212-2218.(in Chinese))
[12]	MAHMUTO?LU Y. Surface subsidence induced by twin subway tunnelling in soft ground conditions in Istanbul[J]. Bulletin of Engineering Geology and the Environment，2011，70(1)：115-131.
[13]	OCAK I. A new approach for estimating the transverse surface settlement curve for twin tunnels in shallow and soft soils[J]. Environmental Earth Sciences，2014，72(7)：2357-2367.
[14]	KOUKOUTAS S P，SOFIANOS A I. Settlements due to single and twin tube urban EPB shield tunnelling[J]. Geotechnical and Geological Engineering，2015，33(3)：487-510.
[15]	马可栓. 盾构施工引起地基移动与近邻建筑保护研究[博士学位论文][D]. 武汉：华中科技大学，2008.(MA Keshuan. Research on the ground settlement caused by the shield construction and the protection of the adjacent buildings[Ph. D. Thesis][D]. Wuhan：Huazhong University of Science and Technology，2008.(in Chinese))
[16]	MA L，DING LY，LUO HB. Non-linear description of ground settlement over twin tunnels in soil[J]. Tunnelling and Underground Space Technology，2014，42：144-151.
[17]	BAI Y，YANG ZH，JIANG ZW. Key protection techniques adopted and analysis of influence on adjacent buildings due to the Bund Tunnel construction[J]. Tunnelling and Underground Space Technology. 2014，41：24-34.
[18]	孙宇坤，关富玲. 盾构隧道掘进对砌体结构建筑物沉降的影响[J]. 中国铁道科学，2012，33(4)：38-44.(SUN Yukun，GUAN Fuling. Shield tunnel construction induced influence on the settlement of masonry buildings[J]. China Railway Science，2012，33(4)：38-44.(in Chinese))
[19]	谢雄耀，王强，齐勇，等. 圆砾泥岩复合地层泥水盾构下穿房屋沉降控制技术研究[J]. 岩土工程学报，2017，39(9)：1591-1599.(XIE Xiongyao，WANG Qiang，QI Yong，et al. Settlement control study of slurry shield tunnelling crossing adjacent buildings in mixed ground of round gravel and mudstone[J]. Chinese Journal of Geotechnical Engineering，2017，39(9)：1591-1599.(in Chinese))
[20]	O' REILLY M P，NEW B M. Settlement above tunnels in the United Kingdom—Their magnitude and prediction[C]//Proceedings of Tunneling 82. London，UK：[s. n.]，1983：173-181.