DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT

Over the past couple of decades, root piles as the new tool for addressing a number of tough problems have been gaining a continually increasing interest in tunnel, especially for complex geological conditions. Therefore, in order to promote the development and application of root piles in tunnel en...

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Main Authors: Hao Ding, Linjian Su, Jinxing Lai, Yuanhang Zhang
Format: Article
Language:English
Published: Czech Technical University, Prague 2017-10-01
Series:Civil Engineering Journal
Subjects:
Online Access:http://www.civilengineeringjournal.cz/archive/issues/2017/2017_3/3-2017-0022.pdf
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author Hao Ding
Linjian Su
Jinxing Lai
Yuanhang Zhang
author_facet Hao Ding
Linjian Su
Jinxing Lai
Yuanhang Zhang
author_sort Hao Ding
collection DOAJ
description Over the past couple of decades, root piles as the new tool for addressing a number of tough problems have been gaining a continually increasing interest in tunnel, especially for complex geological conditions. Therefore, in order to promote the development and application of root piles in tunnel engineering, this paper systematically sorts out the research status and development prospect of root piles from the application in foundation underpinning to reinforcement of tunnel foundation. Firstly, the type and development process of root piles are discussed. Secondly, the reinforcement mechanism of the root piles in the tunnel base is refined and combed: the reinforcement mechanism analysis focuses on frictional resistance of soil around pile, soil among piles, and piles. Thirdly, the calculation method of reinforced tunnel foundation is studied from the bearing of vertical load, horizontal load and pile reinforcement design. And through the engineering case, the paper illustrates the reinforcement effect of the root pile in ensuring the stability of the tunnel and the concrete process of the root piles in the tunnel construction. Finally, the problem and development prospect of root piles are discussed, so as to provide new perspectives and fundamental data for the research on tunnel engineering.
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spelling doaj.art-f490dc49477147fbba61eb7630124bf62023-08-02T02:47:50ZengCzech Technical University, PragueCivil Engineering Journal1805-25762017-10-0120173250266DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENTHao Ding0Linjian Su1Jinxing Lai2Yuanhang Zhang3School of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaSchool of Highway, Chang’an University, Xi’an 710064, ChinaOver the past couple of decades, root piles as the new tool for addressing a number of tough problems have been gaining a continually increasing interest in tunnel, especially for complex geological conditions. Therefore, in order to promote the development and application of root piles in tunnel engineering, this paper systematically sorts out the research status and development prospect of root piles from the application in foundation underpinning to reinforcement of tunnel foundation. Firstly, the type and development process of root piles are discussed. Secondly, the reinforcement mechanism of the root piles in the tunnel base is refined and combed: the reinforcement mechanism analysis focuses on frictional resistance of soil around pile, soil among piles, and piles. Thirdly, the calculation method of reinforced tunnel foundation is studied from the bearing of vertical load, horizontal load and pile reinforcement design. And through the engineering case, the paper illustrates the reinforcement effect of the root pile in ensuring the stability of the tunnel and the concrete process of the root piles in the tunnel construction. Finally, the problem and development prospect of root piles are discussed, so as to provide new perspectives and fundamental data for the research on tunnel engineering.http://www.civilengineeringjournal.cz/archive/issues/2017/2017_3/3-2017-0022.pdfTunnel engineeringRoot pilesFoundation bottom consolidationConstruction
spellingShingle Hao Ding
Linjian Su
Jinxing Lai
Yuanhang Zhang
DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT
Civil Engineering Journal
Tunnel engineering
Root piles
Foundation bottom consolidation
Construction
title DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT
title_full DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT
title_fullStr DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT
title_full_unstemmed DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT
title_short DEVELOPMENT AND PROSPECT OF ROOT PILES IN TUNNEL FOUNDATION REINFORCEMENT
title_sort development and prospect of root piles in tunnel foundation reinforcement
topic Tunnel engineering
Root piles
Foundation bottom consolidation
Construction
url http://www.civilengineeringjournal.cz/archive/issues/2017/2017_3/3-2017-0022.pdf
work_keys_str_mv AT haoding developmentandprospectofrootpilesintunnelfoundationreinforcement
AT linjiansu developmentandprospectofrootpilesintunnelfoundationreinforcement
AT jinxinglai developmentandprospectofrootpilesintunnelfoundationreinforcement
AT yuanhangzhang developmentandprospectofrootpilesintunnelfoundationreinforcement