[1]吴 勇,王烨晟,丁 智,等.堆载工况下软土盾构隧道衬砌纵向力学性能研究[J].华南地震,2020,40(01):81-88.[doi:10.13512/j.hndz.2020.01.012]
　WU Yong,WANG Yesheng,DING Zhi,et al.Research on Longitudinal Mechanical Properties of Soft Soil Shield Tunnel Lining under Heap Loading Conditions[J].South China journal of seismology,2020,40(01):81-88.[doi:10.13512/j.hndz.2020.01.012]
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堆载工况下软土盾构隧道衬砌纵向力学性能研究()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2020年01期
页码:
81-88
栏目:
土木工程防震减灾
出版日期:
2020-03-31

文章信息/Info

Title:
Research on Longitudinal Mechanical Properties of Soft Soil Shield Tunnel Lining under Heap Loading Conditions
文章编号:
1001-8662（2020）01-0081-08
作者:
吴 勇1; 2; 王烨晟2; 3; 丁 智4; 罗宇勤3; 张雄健3; 任 辉3; 俞国骅4
1. 中国电建集团华东勘测设计研究院有限公司，杭州 311122；2. 浙江省智慧轨道交通工程技术研究中心，杭州 311122；3. 浙江华东工程安全技术有限公司，杭州 311122；4. 浙江大学城市学院 土木工程系，杭州 310015
Author(s):
WU Yong1; 2; WANG Yesheng2; 3; DING Zhi4; LUO Yuqin3; ZHANG Xiongjian3;  REN Hui3; YU Guohua4
1.Huadong Engineering Corporation Limited，Hangzhou 311122，China；2. Zhejiang Intelligent Rail Transit Engineering Technology Research Center，Hangzhou 311122，China；3.Zhejiang Huadong Engineering Safety Technology Co.Ltd, Hangzhou 311122，China；4.Department of Civil Engineering，Zhejiang University City College，Hangzhou 310015，China
关键词:
上覆堆载; 软土; 地铁盾构隧道; 纵向等效抗弯刚度; 极限弯矩; 折损率
Keywords:
Overburden; Soft soil; Subway shield tunnel; Equivalent longitudinal bending stiffness; Ultimate bending moment; Damage rate
分类号:
U45
DOI:
10.13512/j.hndz.2020.01.012
文献标志码:
A
摘要:
为了定量分析软土地区堆载工况下隧道衬砌内在力学性能的变化，对志波模型进行改进分析，并结合现有试验研究成果，创新性地提出衬砌纵向等效抗弯刚度折损率和极限弯矩折损率概念，计算得到软土地铁盾构隧道上覆堆载变化对衬砌纵向等效抗弯刚度及其极限弯矩的影响规律。研究结果表明：随着上覆堆载的增加，衬砌纵向等效抗弯刚度和极限弯矩都呈明显下降趋势，且两者的折损率都呈抛物线型增长。并进一步利用研究成果对杭州地铁盾构隧道上方堆载案例进行实际应用和合理加固，效果较好。
Abstract:
In order to quantitatively analyze the change of internal mechanical properties of tunnel lining under pile loading in soft soil area. Based on the existing study results, through collating, the paper gets the relationship between the height of the heap and the deformation of lining diameter. The paper innovatively proposed the damage rate of lining equivalent bending stiffness and ultimate bending moment, calculated and analyzed the influence of overburden heights on equivalent longitudinal bending stiffness and ultimate bending moment of shield tunnel in soft subway. The results show that: with the increase of overburden heights, the longitudinal equivalent bending stiffness and ultimate bending moment of the lining decreased obviously, and the damage rate of them both grow parabolically. The paper further applies the research results to the loading case above the shield tunnel of Hangzhou Metro, which works better.

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[1]王永锋,杜 军,王利民,等.基坑被动区加固对基坑支护体系变形和桩后土体沉降的影响[J].华南地震,2021,41(04):121.[doi:10.13512/j.hndz.2021.04.17]
　WANG Yongfeng,DU Jun,WANG Limin,et al.Effect of Passive Zone Reinforcement on Deformation of Foundation Pit Supporting System and Soil Settlement Behind Piles[J].South China journal of seismology,2021,41(01):121.[doi:10.13512/j.hndz.2021.04.17]
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备注/Memo

备注/Memo:
收稿日期：2019-10-22基金项目：国家自然科学基金资助项目（51508506）；浙江省自然科学基金联合基金（LHZ20E080001）；浙江省重点研发计划项目（2020C01102）联合资助作者简介：吴 勇（1980- ），男，高级工程师，从事岩土工程监测与检测，地铁工程风险咨询与管理方面的研究和咨询。E-mail：wu_y3@ecidi.com.通信作者：丁 智（1983- ），男，博士，副教授，硕导，主要从事轨道交通施工及运营对周边环境影响研究。E-mail： dingz@zucc.edu.cn.
更新日期/Last Update: 2020-04-18