Home | About Journal  | Editorial Board  | Instruction | Subscription | Advertisement | Message Board  | Contact Us | 中文
MODERN TUNNELLING TECHNOLOGY 2020, Vol. 57 Issue (4) :52-58    DOI:
Current Issue | Next Issue | Archive | Adv Search << [an error occurred while processing this directive] | [an error occurred while processing this directive] >>
Study on Reliability of Steel Fiber Reinforced Concrete Segments of Metro in Marine Strata
(1 Shenzhen Metro Group Co., Ltd , Shenzhen 518026;2 China Railway Academy Co., Ltd, Chengdu 610032)
Download: PDF (1170KB)   HTML (1KB)   Export: BibTeX or EndNote (RIS)      Supporting Info
Abstract The selection of segment materials determines the segment performance and the overall safety and reli? ability of the structure. Steel fiber reinforced concrete materials have better mechanical properties than that of normal concrete in terms of crack resistance, earthquake resistance, fatigue resistance and impact resistance. Therefore,based on the reliability theory, steel fiber is added into the concrete material to optimize the mix design, and a series of tests are carried out to study the reliability of steel fiber reinforced concrete segment aiming at the segment lining of the Shenzhen shield tunnel in marine strata. The results show that: (1) in the case without large deformation, the best scheme is to use steel fiber reinforced concrete segments with less reinforcement; (2) under the same reinforcement ratio, the steel fiber concrete segment with less reinforcement has higher reliability than that of the original steel reinforced concrete segment, and it is affected by amounts of steel fiber admixture, varieties, shapes and aspect ratios; (3) steel fiber reinforced concrete segment can greatly improve the reliability of lining structure and meet the safety standard of metro tunnel structure durability in marine strata.
Service
Email this article
Add to my bookshelf
Add to citation manager
Email Alert
RSS
Articles by authors
ZHENG Aiyuan1 XU Bin2 CHEN Xiangsheng1
KeywordsMetro shield tunnel   Steel fiber reinforced concrete segment   Limit state design   Reliability     
Abstract: The selection of segment materials determines the segment performance and the overall safety and reli? ability of the structure. Steel fiber reinforced concrete materials have better mechanical properties than that of normal concrete in terms of crack resistance, earthquake resistance, fatigue resistance and impact resistance. Therefore,based on the reliability theory, steel fiber is added into the concrete material to optimize the mix design, and a series of tests are carried out to study the reliability of steel fiber reinforced concrete segment aiming at the segment lining of the Shenzhen shield tunnel in marine strata. The results show that: (1) in the case without large deformation, the best scheme is to use steel fiber reinforced concrete segments with less reinforcement; (2) under the same reinforcement ratio, the steel fiber concrete segment with less reinforcement has higher reliability than that of the original steel reinforced concrete segment, and it is affected by amounts of steel fiber admixture, varieties, shapes and aspect ratios; (3) steel fiber reinforced concrete segment can greatly improve the reliability of lining structure and meet the safety standard of metro tunnel structure durability in marine strata.
KeywordsMetro shield tunnel,   Steel fiber reinforced concrete segment,   Limit state design,   Reliability     
Cite this article:   
ZHENG Aiyuan1 XU Bin2 CHEN Xiangsheng1 .Study on Reliability of Steel Fiber Reinforced Concrete Segments of Metro in Marine Strata[J]  MODERN TUNNELLING TECHNOLOGY, 2020,V57(4): 52-58
URL:  
http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2020/V57/I4/52
 
No references of article
[1] WANG Jianyu.The Key Way is to Release the Genuine Rock Pressure—Discussion on Problems of Tunnelling in Squeezing Ground[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 1-11
[2] TANG Xie1 LIN Guojin1, 2 HE Jia1 WANG Jun1.Design and Practice of Auxiliary Construction Scheme for Micangshan Tunnel Using Ventilation Shaft[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 12-19
[3] LIAO Yankai1 GUO Deping1 LIU Zhiqiang2 CHEN Dayang2.Application of Peripheral Strain and Squeezing Factor Methods in the Prediction of Large Deformation of Tunnel Surrounding Rocks[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 20-26
[4] SUN Jianping TANG Zhaoping.Study and Evaluation on the Design Adaptability of Shield Cutterhead System[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 27-36
[5] YANG Tianren HE Fei NING Xiangke ZHANG Xiao TIAN Yanchao.Design and Application of Advanced Geological Prediction System of TBM for Gaoligongshan Tunnel[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 37-42
[6] LIU Yuyang1 LAI Hongpeng2 WANG Minxing3 HE Qiumei4.Development and Application of Multi-point Independent Loading Testing System for Tunnel Lining[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 43-51
[7] CHEN Yunyao1,2 ZHANG Junwei1 MA Shiwei2 LI Xue1.Study on Design Parameters of Sealing Gasket for Segment Joints of Shield Tunnel[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 59-66
[8] REN Lei1 NIU Bin2 GUO Ting2 LIU Songyu2.Study on the Influence of Flexibility Ratio on Tunnel Seismic Dynamic Response[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 67-73
[9] LIU Ping1 LIU Chi2 WANG Hongtao1 ZHANG Hongjun3 YANG Yong4 ZHANG Xin1 LIU Luyao1.Numerical Simulation Study on the Deformation and Failure Mechanism of Tunnel Surrounding Rock under the Effect of Water-rich Sand Layer[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 74-81
[10] JIANG Yongtao1 WANG Mingnian1 ZHANG Yiteng1 YU Li1 JIANG Fan2 XIAO Zerong3.Prediction Method for Surface Settlement in Tunnel Construction with Pipe Curtain Support[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 82-90
[11] ZHANG Yiteng1 SUN Xingliang2 JIANG Yongtao1 YU Li1 JIANG Fan3 CHEN Mingyue3 XIAO Zerong4.Research on Vault Ultimate Displacement at Different Tunnel Construction Stages in Surrounding Rock of Grade Ⅴ[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 91-97
[12] WEN Shuli.Influence of Deep Foundation Pit Excavation on Adjacent Buildings and Optimization of Reinforcement Measures[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 98-103
[13] ZHANG Jing1, 2.Study on Calculations and Influence Factors of Bending Stiffness of Segment Ring Joints of Shield Tunnels[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 104-112
[14] WANG Chengjing ZHANG Yong ZHU Chengshan HAN Xiang.Analysis of Influence of Flowing Water in Tunnel on Freezing Effect of Cross Passage[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 113-118
[15] MI Shipeng.Research on Soil Plug Pressure-bearing Characteristics of Screw Conveyor with Variable Pitch[J]. MODERN TUNNELLING TECHNOLOGY, 2020,57(4): 119-126
Copyright 2010 by MODERN TUNNELLING TECHNOLOGY