Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway

Wen Lina; Cheng Qiangong; Cheng Qiang; Guo Xifeng

doi:doi:10.11648/j.ajce.20170504.11

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Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway

Wen Lina, Cheng Qiangong, Cheng Qiang, Guo Xifeng

Published in American Journal of Civil Engineering (Volume 5, Issue 4)

Received: 12 June 2017 Published: 14 June 2017

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Abstract

Based on features of indoor rock mechanics test, the in situ test and rock mass classification result, through established numerical analysis model of the tunnel anchor model drawing test, using the model observed values of surrounding rock deformation, using intelligent inversion method to inverting the displacement creep and mechanical parameters and provides more accurate and reasonable rock mass mechanics parameters to analyze the stability of surrounding rock tunnel anchorage of Dadu River bridge from Yaan to Kangding expressway in Lu Ding. This paper uses LSSVM and PSO analysis model and FLAC^3D numerical methods to realize the intelligent displacement inversion. Through the anchor parameters inversion of the model, and establish the solid bridge anchor numerical model, analysis of anchor tunnel excavation, load and overload condition of deformation and internal force, and then analyze the stability of tunnel anchor. Under the design load, anchorage roof and side wall stress relaxation zone in the plastic zone, floor rock mass basic in flexible working condition. Increase the force of main cable and 7P, shear failure and anchor rock contact area, increase the displacement of anchorage is nonlinear. Under the overload condition, the anchor rock rupture increased significantly and produce compression, the plastic zone to the development of deep surrounding rock anchorage above, failure mode for compressive shear failure. The conclusion to provide technical support for tunnel anchor design, at the same time, provide reference for similar projects.

Published in	American Journal of Civil Engineering (Volume 5, Issue 4)
DOI	10.11648/j.ajce.20170504.11
Page(s)	196-204
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Tunnel Anchor, Stability, Inversion

References

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[2]	ZHU Yu, WEI Jun, LI Hao, ect al. Analysis of Displacements of Tunnel-type Anchorage for a Large-span Suspension Bridge. [J] Chinese Journal of Rock Mechanics and Engineering, 2005, 24(19): 3588-3593. (in Chinese)
[3]	ZHU Yu, LIAO Chao-hua, PENG Yuan-cheng. Design and Structural Capacity Assessment of Tunnel-Type Anchorage for Long-Span Suspension Bridge. [J] Bridge Construction, 2005, 2(2): 44-46, 73. (in Chinese)
[4]	ZHU Yu, WEI Jun, LI Hao, ect al. Support capability of tunnel-type anchorage of a long-span suspension bridge. [J] J. Huazhong University of sci. & Tech. (Nature Science Edition, 2005, 33(7): 90-93. (in Chinese)
[5]	WU Aiqing, PENG Yuancheng, HUANG Zhengjia, et al. Rock mechanics comprehensive study of bearing capacity characteristics of tunnel anchorage for super-large span suspension bridge [J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(3): 433–441. (in Chinese)
[6]	XIAO Benzhi, WU Xiangchao, PENG Chaoquan. Stability of The Anchorage Wall Rock of Tunnel for Chongqing Egongyan Bridge. [J] Chinese Journal of Rock Mechanics and Engineering, 2005, 24(Supp. 2): 5591-5597 (in Chinese)
[7]	WU Xiangchao, XIAO Benzhi, PENG Chaoquan. A study on rock mechanical parameters of east anchorage of Egongyan Bridge across Yangtze River in Chongqing [J]. Underground Space, 2003, 23(2): 132—138. (in Chinese)
[8]	HU Bo, ZHAO Hai-bin, WANG Si-jing, et al. Pull-out model test for tunnel anchorage and numerical analysis [J]. Rock and Soil Mechanics, 2009, 30(6): 1575-1582. (in Chinese)
[9]	Dong Zhihong, Zhang Qihua, Ding Xiuli, etc al. Numerical Analysis of Rockmass Stability in Tunnel Anchoring of Aizhai Bridge. [J] Journal of Yangtze River Scientific Research Institute, 2005, 22(6): 54-58. (in Chinese)
[10]	Wu Kai, SHENG Qian, etc. A model of PSO-LSSVM and its application to displacement back analysis [J]. Chinese Journal of Rock and Soil Mechanics, 2009, 30(4):1109-1114. (in Chinese)

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APA Style

Wen Lina, Cheng Qiangong, Cheng Qiang, Guo Xifeng. (2017). Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway. American Journal of Civil Engineering, 5(4), 196-204. https://doi.org/10.11648/j.ajce.20170504.11

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ACS Style

Wen Lina; Cheng Qiangong; Cheng Qiang; Guo Xifeng. Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway. Am. J. Civ. Eng. 2017, 5(4), 196-204. doi: 10.11648/j.ajce.20170504.11

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AMA Style

Wen Lina, Cheng Qiangong, Cheng Qiang, Guo Xifeng. Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway. Am J Civ Eng. 2017;5(4):196-204. doi: 10.11648/j.ajce.20170504.11

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@article{10.11648/j.ajce.20170504.11,
  author = {Wen Lina and Cheng Qiangong and Cheng Qiang and Guo Xifeng},
  title = {Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway},
  journal = {American Journal of Civil Engineering},
  volume = {5},
  number = {4},
  pages = {196-204},
  doi = {10.11648/j.ajce.20170504.11},
  url = {https://doi.org/10.11648/j.ajce.20170504.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20170504.11},
  abstract = {Based on features of indoor rock mechanics test, the in situ test and rock mass classification result, through established numerical analysis model of the tunnel anchor model drawing test, using the model observed values of surrounding rock deformation, using intelligent inversion method to inverting the displacement creep and mechanical parameters and provides more accurate and reasonable rock mass mechanics parameters to analyze the stability of surrounding rock tunnel anchorage of Dadu River bridge from Yaan to Kangding expressway in Lu Ding. This paper uses LSSVM and PSO analysis model and FLAC3D numerical methods to realize the intelligent displacement inversion. Through the anchor parameters inversion of the model, and establish the solid bridge anchor numerical model, analysis of anchor tunnel excavation, load and overload condition of deformation and internal force, and then analyze the stability of tunnel anchor. Under the design load, anchorage roof and side wall stress relaxation zone in the plastic zone, floor rock mass basic in flexible working condition. Increase the force of main cable and 7P, shear failure and anchor rock contact area, increase the displacement of anchorage is nonlinear. Under the overload condition, the anchor rock rupture increased significantly and produce compression, the plastic zone to the development of deep surrounding rock anchorage above, failure mode for compressive shear failure. The conclusion to provide technical support for tunnel anchor design, at the same time, provide reference for similar projects.},
 year = {2017}
}

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TY  - JOUR
T1  - Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway
AU  - Wen Lina
AU  - Cheng Qiangong
AU  - Cheng Qiang
AU  - Guo Xifeng
Y1  - 2017/06/14
PY  - 2017
N1  - https://doi.org/10.11648/j.ajce.20170504.11
DO  - 10.11648/j.ajce.20170504.11
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 196
EP  - 204
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20170504.11
AB  - Based on features of indoor rock mechanics test, the in situ test and rock mass classification result, through established numerical analysis model of the tunnel anchor model drawing test, using the model observed values of surrounding rock deformation, using intelligent inversion method to inverting the displacement creep and mechanical parameters and provides more accurate and reasonable rock mass mechanics parameters to analyze the stability of surrounding rock tunnel anchorage of Dadu River bridge from Yaan to Kangding expressway in Lu Ding. This paper uses LSSVM and PSO analysis model and FLAC3D numerical methods to realize the intelligent displacement inversion. Through the anchor parameters inversion of the model, and establish the solid bridge anchor numerical model, analysis of anchor tunnel excavation, load and overload condition of deformation and internal force, and then analyze the stability of tunnel anchor. Under the design load, anchorage roof and side wall stress relaxation zone in the plastic zone, floor rock mass basic in flexible working condition. Increase the force of main cable and 7P, shear failure and anchor rock contact area, increase the displacement of anchorage is nonlinear. Under the overload condition, the anchor rock rupture increased significantly and produce compression, the plastic zone to the development of deep surrounding rock anchorage above, failure mode for compressive shear failure. The conclusion to provide technical support for tunnel anchor design, at the same time, provide reference for similar projects.
VL  - 5
IS  - 4
ER  -

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Author Information

Wen Lina

Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
Cheng Qiangong

Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
Cheng Qiang

Highway Planning Survey, Design and Research Institute, Sichuan Provincial Transport Department, Chengdu, China
Guo Xifeng

Yangtze River Academy of Sciences, Yangtze River Water Resources Commission, Wuhan, China

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APA Style

Wen Lina, Cheng Qiangong, Cheng Qiang, Guo Xifeng. (2017). Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway. American Journal of Civil Engineering, 5(4), 196-204. https://doi.org/10.11648/j.ajce.20170504.11

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ACS Style

Wen Lina; Cheng Qiangong; Cheng Qiang; Guo Xifeng. Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway. Am. J. Civ. Eng. 2017, 5(4), 196-204. doi: 10.11648/j.ajce.20170504.11

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AMA Style

Wen Lina, Cheng Qiangong, Cheng Qiang, Guo Xifeng. Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway. Am J Civ Eng. 2017;5(4):196-204. doi: 10.11648/j.ajce.20170504.11

Copy | Download

@article{10.11648/j.ajce.20170504.11,
  author = {Wen Lina and Cheng Qiangong and Cheng Qiang and Guo Xifeng},
  title = {Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway},
  journal = {American Journal of Civil Engineering},
  volume = {5},
  number = {4},
  pages = {196-204},
  doi = {10.11648/j.ajce.20170504.11},
  url = {https://doi.org/10.11648/j.ajce.20170504.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20170504.11},
  abstract = {Based on features of indoor rock mechanics test, the in situ test and rock mass classification result, through established numerical analysis model of the tunnel anchor model drawing test, using the model observed values of surrounding rock deformation, using intelligent inversion method to inverting the displacement creep and mechanical parameters and provides more accurate and reasonable rock mass mechanics parameters to analyze the stability of surrounding rock tunnel anchorage of Dadu River bridge from Yaan to Kangding expressway in Lu Ding. This paper uses LSSVM and PSO analysis model and FLAC3D numerical methods to realize the intelligent displacement inversion. Through the anchor parameters inversion of the model, and establish the solid bridge anchor numerical model, analysis of anchor tunnel excavation, load and overload condition of deformation and internal force, and then analyze the stability of tunnel anchor. Under the design load, anchorage roof and side wall stress relaxation zone in the plastic zone, floor rock mass basic in flexible working condition. Increase the force of main cable and 7P, shear failure and anchor rock contact area, increase the displacement of anchorage is nonlinear. Under the overload condition, the anchor rock rupture increased significantly and produce compression, the plastic zone to the development of deep surrounding rock anchorage above, failure mode for compressive shear failure. The conclusion to provide technical support for tunnel anchor design, at the same time, provide reference for similar projects.},
 year = {2017}
}

Copy | Download

TY  - JOUR
T1  - Stabilitation Research of the Tunnel Anchorage of Dadu River Bridge in Luding in Yaan to Kangding Expressway
AU  - Wen Lina
AU  - Cheng Qiangong
AU  - Cheng Qiang
AU  - Guo Xifeng
Y1  - 2017/06/14
PY  - 2017
N1  - https://doi.org/10.11648/j.ajce.20170504.11
DO  - 10.11648/j.ajce.20170504.11
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 196
EP  - 204
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20170504.11
AB  - Based on features of indoor rock mechanics test, the in situ test and rock mass classification result, through established numerical analysis model of the tunnel anchor model drawing test, using the model observed values of surrounding rock deformation, using intelligent inversion method to inverting the displacement creep and mechanical parameters and provides more accurate and reasonable rock mass mechanics parameters to analyze the stability of surrounding rock tunnel anchorage of Dadu River bridge from Yaan to Kangding expressway in Lu Ding. This paper uses LSSVM and PSO analysis model and FLAC3D numerical methods to realize the intelligent displacement inversion. Through the anchor parameters inversion of the model, and establish the solid bridge anchor numerical model, analysis of anchor tunnel excavation, load and overload condition of deformation and internal force, and then analyze the stability of tunnel anchor. Under the design load, anchorage roof and side wall stress relaxation zone in the plastic zone, floor rock mass basic in flexible working condition. Increase the force of main cable and 7P, shear failure and anchor rock contact area, increase the displacement of anchorage is nonlinear. Under the overload condition, the anchor rock rupture increased significantly and produce compression, the plastic zone to the development of deep surrounding rock anchorage above, failure mode for compressive shear failure. The conclusion to provide technical support for tunnel anchor design, at the same time, provide reference for similar projects.
VL  - 5
IS  - 4
ER  -

Copy | Download