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Numerical simulation and stability analysis of surrounding rock of large-span multi-arch tunnel

Ren Shaoqiang

Strategic Study of CAE 2009, Volume 11, Issue 8, Pages 58-63

Abstract:

Highway multi-arch tunnel as a new structure form has been developedin resent decades with the rapid development of high level road, and this tunnel structure form has theHowever, compared with individual tunnel and conjoined tunnel,multi-arch tunnel has the question of motherThis paper, taking the Baiguoba Tunnel, Enshi to Lichuan section, Hurongxi express way, as the backgroundand combining field engineering construction, analyzed the Baiguoba Tunnel with MIDAS-GTS, laid the

Keywords： multi-arch tunnel numerical simulation surrounding rock stress

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RBF-ANN-Based forecast method of transmutation of wall rock on multi-arch tunne

Xiao Zhiwang,Zhong Denghua

Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 77-81

Abstract: neural network of radial basis function to construct the forecast model of deformation of wall rock in multi-archtunnel and cllso uses Matlab tool to solve the optimal problem.

Keywords： multi-arch tunnel deformation of wall rock deformation forecast radial basis function (RBF) artificial

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Stability analysis and optimization of excavation method of double-arch tunnel with an extra-large span

Yiguo XUE, Huimin GONG, Fanmeng KONG, Weimin YANG, Daohong QIU, Binghua ZHOU

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1, Pages 136-146 doi: 10.1007/s11709-020-0710-8

Abstract: The Xiamen Haicang double-arch tunnel has a maximum span of 45.73 m and a minimum burial depth of 5.8A larger deformation or collapse of the tunnel is readily encountered during tunnel excavation.It is therefore necessary to select a construction approach that is suitable for double-arch tunnel projectsIn this study, three construction methods for double-arch tunnels with extra-large spans were numericallyfindings can serve as the initial guidelines for the construction of ultra-shallowly buried double-arch

Keywords： double-arch tunnel triple-layer composite liner system numerical modeling stress analysis settlement

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Investigation of mechanical performance of prestressed steel arch in tunnel

Yaqiong WANG, Yunxiao XIN, Yongli XIE, Jie LI, Zhifeng WANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3, Pages 360-367 doi: 10.1007/s11709-017-0429-3

Abstract: In the traditional tunneling method, the steel arch are often adopted to support surrounding rock toIf the steel arch is prestressed in time, tunnel support can effectively prevent the development of rockcrack, thereby increasing the overall strength of tunnel support and suppress the deformation of theThrough a field test, the rules of the arch strain distribution are observed and discussed.gradually decreases from stress point to another arch springing.

Keywords： tunnel support prestressing force steel arch numerical analysis

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Research on construction optimization of asymmetric double arch section in Jiaozhou Bay Subsea Tunnel

Wang Kai,Zhang Chengping,Wang Mengshu

Strategic Study of CAE 2012, Volume 14, Issue 1, Pages 90-97

Abstract:

Aiming at the asymmetric double-arch tunnel engineering that lies atJiaozhou Bay in Qingdao, the section located in the intersection between main tunnel and ramb tunnelcontrolled by using of the construction sequence that first middle drift and then right hole of ramb tunnel

Keywords： subsea tunnel asymmetric double arch tunnel construction scheme optimization construction sequence

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Hard-rock tunnel lithology identification using multi-scale dilated convolutional attention network basedon tunnel face images

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 12, Pages 1796-1812 doi: 10.1007/s11709-023-0002-1

Abstract: classification of rock-masses in hard-rock tunnels, quick determination of the rock lithology on the tunnellithology based on tunnel face images was developed.method benefits from residual learning for training a deep convolutional neural network (DCNN), and a multi-scaleThe block with different dilation rates can provide various receptive fields, and thus it can extract multi-scaleIn this study, an initial image data set made up of photographs of tunnel faces consisting of basalt,

Keywords： hard-rock tunnel face intelligent lithology identification multi-scale dilated convolutional attention

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Mechanical response of a tunnel subjected to strike-slip faulting processes, based on a multi-scale modeling

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 8, Pages 1281-1295 doi: 10.1007/s11709-024-1046-6

Abstract: The integration of these models, creating a multi-scale modeling method, is used to evaluate the crackpropagation and mechanical response of a tunnel subjected to strike-slip faulting.substantial agreement with the previous field investigation and experimental results, validating the multi-scalecan be concluded that, regardless of stratum stiffness, initial cracks first occur at the inverted archof the tunnel in the footwall, on the squeezed side under strike-slip faulting.

Keywords： stick-slip action plate squeezing analysis multi-scale modeling method lining cracking mechanical

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Deep convolutional neural network for multi-level non-invasive tunnel lining assessment

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2, Pages 214-223 doi: 10.1007/s11709-021-0800-2

Abstract: The paper proposes a multi-level strategy, designed and implemented on the basis of periodic structuralmonitoring oriented to a cost- and time-efficient tunnel control plan.

Keywords： concrete structure GPR damage classification convolutional neural network transfer learning

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Modelling autogenous expansion for magnesia concrete in arch dams

JIN Feng, LUO Xiaoqing, ZHANG Chuhan, ZHANG Guoxin

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3, Pages 211-218 doi: 10.1007/s11709-008-0025-7

Abstract: To evaluate the effects of autogenous expansion on the stresses of arch dams, a simple model of autogenousby some experimental data of autogenous expansion of Magnesia Concrete and field-measured data of an archEmbedded into finite element arch dam simulation software, this model is employed to simulate the effects

Keywords： field-measured irreversibility temperature irreversible element arch

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Analysis of arch dam deformations

Franz PERNER, Pius OBERNHUBER,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1, Pages 102-108 doi: 10.1007/s11709-010-0012-7

Abstract: an alarm is triggered in the case of larger deviations.The main contributors to the deformations of archloading and the portion caused by temperature variation.The present article deals with the analysis of archproposed procedure is employed for the analysis of the deformations of the 186 m high Zillergruendl arch

Keywords： arch dam analysis Zillergruendl concrete temperature hybrid model

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Shape design of arch dams under load uncertainties with robust optimization

Fengjie TAN, Tom LAHMER

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4, Pages 852-862 doi: 10.1007/s11709-019-0522-x

Abstract: The focus of this paper is on the non-probabilistic-based design of new arch-type dams by applying meansThe optimization of an arch-type dam is realized here by a robust optimization method under load uncertaintyBy this means, the robust design can generate an improved arch dam structure that ensures both safety

Keywords： arch dam shape optimization robust optimization load uncertainty approximation model

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Numerical simulation of damage in high arch dam due to earthquake

Hong ZHONG , Gao LIN , Hongjun LI

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3, Pages 316-322 doi: 10.1007/s11709-009-0039-9

Abstract: assumption that concrete is macroscopic homogeneous, the cracking evolution process and damage mode of high archcombine with the Mohr-Coulomb criterion to investigate the crack development and fracture mode of high archThe analysis result of a high arch dam in China under design shows that cracks that take place in concrete

Keywords： mesoscopic heterogeneity damage simulation in earthquakes arch dam

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Key problems and solutions in arch dam heightening

Zuoguang FU, Yunlong HE, Sheng SU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1, Pages 98-104 doi: 10.1007/s11709-010-0004-7

Abstract: Three problems should be dealt with when an arch dam needs to be heightened: stress state getting worseTaking Geba arch dam as an example, these problems are examined in details through simulation analysis

Keywords： arch dam heighten tensile stress finite element method

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Control mode selection for modal control of long-span arch bridge

Zhengying LI, Zhengliang LI,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4, Pages 401-406 doi: 10.1007/s11709-009-0052-z

Abstract: For seismic control of arch bridge, a model reduction of long-span arch bridge was implemented basedtime domain and frequency domain analysis method were used to verify the simplified model of the Nimu archThe numerical results show that the method of maximal modal displacement better analyze long-span arch

Keywords： selection reduced-order excitation long-span simplified

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Recent Construction Technology Innovations and Practices for Large-Span Arch Bridges in China

Jielian Zheng,

Engineering doi: 10.1016/j.eng.2024.05.019

Abstract: Arch bridges provide significant technical and economic benefits under suitable conditions.arch bridges are two types of arch bridges that have gained great economic competitiveness and span growth(a CFST arch bridge), with a span of 560 m, and the Tian’e Longtan Bridge (an SRC arch bridge), withinnovations and practices in the construction of CFST arch bridges and SRC arch bridges in China.The technological innovations of SRC arch bridges involve arch skeleton stiffness selection, the development

Keywords： Concrete-filled steel tubular arch bridges Steel-reinforced concrete arch bridges Cable-stayed fastening-hanging