[1]李凯飞.盾构隧道穿越河流最小覆土厚度及沉降研究[J].常州大学学报(自然科学版),2020,32(01):79-84.[doi:10.3969/j.issn.2095-0411.2020.01.012]
　LI Kaifei.Study on Thickness and Settlement of Minimum Covering Soil of Shield Tunnel Crossing River[J].Journal of Changzhou University(Natural Science Edition),2020,32(01):79-84.[doi:10.3969/j.issn.2095-0411.2020.01.012]
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盾构隧道穿越河流最小覆土厚度及沉降研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第32卷
期数:
2020年01期
页码:
79-84
栏目:
土木工程
出版日期:
2020-01-28

文章信息/Info

Title:
Study on Thickness and Settlement of Minimum Covering Soil of Shield Tunnel Crossing River
文章编号:
2095-0411(2020)01-0079-06
作者:
李凯飞
(中铁十六局集团 北京轨道交通工程建设有限公司,北京 101100)
Author(s):
LI Kaifei
(Beijing Rail Transit Engineering Construction Co., Ltd., China Railway 16th Bureau Group, Beijing 101100, China)
关键词:
盾构;  河流;  覆土厚度;  沉降
Keywords:
shield;  river;  covering soil thickness;  settlement
分类号:
TU 93
DOI:
10.3969/j.issn.2095-0411.2020.01.012
文献标志码:
A
摘要:
为解决盾构隧道穿越河流由于浅覆土层引起的施工地层扰动的问题,以及由于同步注浆量、掘进压力导致地层沉降的问题,基于常州地铁二号线一期工程实际情况,结合抗浮稳定的方法求解盾构隧道下穿河流所需最小覆土厚度,同时运用ABAQUS建立三维有限元分析模型,验证计算结果的正确性。基于最小覆土厚度计算结果,通过对不同注浆量、不同掘进压力下的沉降情况对比,提出有效的控制方法。结果表明,该区间所需最小覆土厚度为9.13 m,且同步注浆量越大,地表沉降越大,掘进压力越大,地表沉降越小。所得结论可为盾构隧道穿越河流施工提供一定的参考。
Abstract:
In order to solve the problem of construction stratum disturbance caused by shallow overburden layer of shield tunnel crossing river, and the problem of stratum settlement caused by synchronous grouting volume and tunneling pressure, this paper is based on the actual situation of Changzhou Metro Line 2 Phase I project, combined with the method of anti-floating stability, this paper solves the minimum soil thickness required for the shield tunnel to pass through the river. At the same time, ABAQUS is used to establish a three-dimensional finite element analysis model to verify the correctness of the calculation results. Calculation based on minimum soil thickness, an effective control method is proposed by comparing the settlement conditions under different grouting volumes and different tunneling pressures. The results show that the minimum required soil thickness of this interval is 9.13 m, and the larger the synchronous grouting amount, the larger the ground settlement, the larger the tunneling pressure and the smaller the ground settlement. The conclusions obtained can give a certain reference for the construction of shield tunnels crossing rivers.

参考文献/References:

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相似文献/References:

[1]冯晓九,缪愔斓,魏 浩,等.富水粉砂地层盾构隧道穿越河流沉降控制[J].常州大学学报(自然科学版),2021,33(01):77.[doi:10.3969/j.issn.2095-0411.2021.01.012]
　FENG Xiaojiu,MIAO Yinlan,WEI Hao,et al.Study on Settlement Control of Shield Tunnel Crossing River in Water Rich Silt Stratum[J].Journal of Changzhou University(Natural Science Edition),2021,33(01):77.[doi:10.3969/j.issn.2095-0411.2021.01.012]

备注/Memo

备注/Memo:
收稿日期:2019-11-11。
基金项目:国家自然科学基金资助项目(10272034)。
作者简介:李凯飞(1986—),男,吉林吉林人,工程师。E-mail:578061241@qq.com
更新日期/Last Update: 2020-01-13