基于等效梁模型的盾构隧道施工期管片上浮影响因素权重分析

黄钟晖; 舒瑶; 季昌; 乔书光; 由效铭

doi:10.3973/j.issn.1672-741X.2016.11.002

隧道建设 >

2016 , Vol. 36 >Issue 11: 1295 - 1301

DOI: https://doi.org/10.3973/j.issn.1672-741X.2016.11.002

研究与探索

基于等效梁模型的盾构隧道施工期管片上浮影响因素权重分析

黄钟晖 ,
舒瑶 ,
季昌 ,
乔书光 ,
由效铭

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（1. 南宁轨道交通集团有限责任公司，广西南宁 530021；2. 同济大学道路与交通工程教育部重点实验室，上海 201804）

黄钟晖(1974—)，男，广东横县人，2001年毕业于同济大学，岩土工程专业，博士，教授级高级工程师，主要从事城市轨道交通工程研究工作。Email： huangzhonghui@126.com。*通讯作者：舒瑶，Email： shuiyueheshan@163.com。

收稿日期: 2016-04-05

修回日期: 2016-05-09

网络出版日期: 2016-11-30

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Analysis of Weight of Influencing Factors of Shield Tunnel Segment Uplifting During Construction Based on Equivalent Beam Model

HUANG Zhonghui ,
SHU Yao ,
JI Chang ,
QIAO Shuguang ,
YOU Xiaoming

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(1. Nanning Rail Transit Co., Ltd., Nanning 530021, Guangxi, China; 2. Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai 201804, China)

Received date: 2016-04-05

Revised date: 2016-05-09

Online published: 2016-11-30

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摘要

为厘清盾构隧道施工期影响管片上浮各因素的权重大小，在明确管片上浮影响因素的基础上，基于盾构隧道纵向等效梁模型，以等效刚度的欧拉梁模拟盾构隧道衬砌环，以土体与浆液体等价弹簧来模拟土体与隧道之间的相互作用，编制有限元程序对模型进行求解，并以南宁某地铁盾构隧道施工期管片上浮实测数据来验证计算模型的合理性。采用敏感性分析法计算出各主要影响因素的权重排序，由大到小依次为浆液未凝固区长度、浆液压力、地层变形模量、隧道纵向刚度有效率和总推力竖向分力等，分析各因素的作用机制，并提出针对性的控制措施，以指导工程实践。

关键词： 盾构隧道; 管片上浮; 等效梁模型; 权重分析; 敏感性分析法

本文引用格式

黄钟晖 , 舒瑶 , 季昌 , 乔书光 , 由效铭 . 基于等效梁模型的盾构隧道施工期管片上浮影响因素权重分析[J]. 隧道建设, 2016 , 36(11) : 1295 -1301 . DOI: 10.3973/j.issn.1672-741X.2016.11.002

Abstract

The weights of influencing factors of shield tunnel segments uplifting during construction are studied by equivalent beam model. The lining ring of a Metro shield tunnel in Nanning is simulated by equivalent stiffness Euler beam; the interaction of the soil and tunnel is simulated by equivalent spring; the model is calculated by software Matlab. The calculation results are compared with measured data so as to verify the rationality of the model. The weights of influencing factors are calculated by sensitivity analysis method. The orders of weights of influencing factors are the length of area with unconsolidated grout, grout pressure, deformation modulus of ground, effective rate of longitudinal bending rigidity and vertical force of total thrusting force. The acting mechanisms of influencing factors are analyzed; and then some countermeasures are proposed.

Key words： shield tunnel; segment uplifting; equivalent beam model; weight analysis; sensitivity analysis method

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