Study on influence of deep excavations on existing tunnels
deep excavations in the Shanghai area. Study on influence of deep excavations on existing tunnels using PLAXIS-GiD » In this contribution some results from a comprehensive study investigating different geometric layouts are presented employing PLAXIS-GiD. As ground conditions in Shanghai are very challenging due to the presence of up to 60m
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Interaction Deep Excavation Adjacent Structure
(PDF) Interaction Deep Excavation – Adjacent Structure . unavoidable impact of deep excavations in soft soils and adjacent tunnels is very important, so the impact of this issue on line 1 of the Ningbo Metro Twin Tunnel has been analyzed with 3D numerical modeling by PLAXIS 3D.
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Influence of a Flexible Retaining Wall on Performance of
Oct 28, 2021 · In urban areas with scarce land resources, many deep excavations are performed adjacent to flexible retaining walls. This study investigated the influence of a flexible retaining wall on the performance of an adjacent deep excavation through numerical modeling. The numerical method incorporating the hardening soil small-strain model and input parameters …
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Study on influence of deep excavations on existing tunnels
Oct 19, 2011 · In general these new underground structures require deep excavations and it is therefore necessary to assess the influence of these excavations on existing tunnels because they may undergo displacements which may affect the serviceability of the tunnel, and additional loads on the lining may be imposed for which the lining is not designed for.
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Analysis of Impact of Bilateral Deep Foundation Pit
Bilateral deep foundation pit excavation has significant influence on the structure and operations of the adjacent existing station. According to the excavation of Changsha railway station on Changsha new metro line 3 adjacent to the existing metro line 2, ABAQUS is applied to simulate dynamically the construction process of the bilateral deep foundation pit.
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Deformation Characteristic of a Supported Deep Excavation
Dec 23, 2021 · With the large-scale construction of urban railways and high-rise buildings, comprehensive foundation pits are emerging [], and the scale of foundation pits becomes larger, the excavation depth is deeper, and the surrounding environment is more and more complex and sensitive.Considering the impact of deep excavations on the stability of the existing structure …
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Contributions to responses of existing tunnel subjected to
The main focus of this problem is the influence of nearby excavation on the existing tunnel. Hence, the tunneling process in the numerical simulation is commonly greatly simplified, and the soil mass excavation is generally modeled by activating the retaining wall and struts, and deactivating the soil mass to excavate.
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(PDF) NUMERICAL ANALYSIS OF INFLUENCE OF DEEP …
Apr 02, 2013 · Influence of Deep Excavations on Nearby Existing Tunnels. In Shanghai, a number of new underground passages are being constructed, often requiring deep excavations. When the excavations are in the vicinity of existing tunnels, it is necessary to assess the influence of these excavations on existing tunnels such as displacements of the lining and additional loads on …
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Numerical analysis of influence of deep excavations on
the excavation; the other one is the stress variation of the subway structure in the excavation. To sum up, using Midas GTS calculation software, combined with the characteristics of the project, the influence of excavation on adjacent metro tunnel structure is simulated and analyzed focused on these three aspects mentioned above.
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Influence of Deep Excavations on Nearby Existing Tunnels
Simplified analysis method for predicting the influence of
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Influence of Deep Excavations on Nearby Existing Tunnels
Apr 02, 2013 · When the excavations are in the vicinity of existing tunnels, it is necessary to assess the influence of these excavations on existing tunnels such as displacements of the lining and additional loads on the lining. This paper presents a finite-element parametric study of tunnel behavior caused by nearby deep excavation.
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Influence of Deep Excavations on Nearby Existing Tunnels
Simplified analysis method for predicting the influence of
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CVE6009 Deep Excavation and Tunnelling
AbstractA 267-m-long, 54-m-wide, and 14.9–16.4-m-deep multipropped deep excavation with three cross walls in Shanghai soft clay was constructed at a side of an existing metro station. To investigate the performance of this deep excavation and the effect of this deep excavation on adjacent metro station and shield tunnels, the ground
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Centrifuge modeling of the influence of basement
Excavation nearby an existing tunnel is frequently encountered in underground construction, especially in congested urban areas. A deep excavation has a …
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NUMERICAL ANALYSIS OF INFLUENCE OF DEEP EXCAVATION …
To improve understanding of the structural response of existing tunnels to nearby deep excavations, this paper reports a more-detailed 3D analysis performed with the FE …
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Influence of deep excavation induced ground movements on
TY - JOUR. T1 - Influence of Deep Excavations on Nearby Existing Tunnels. AU - Huang, Xu. AU - Schweiger, Helmut. AU - Huang, Hongwei. PY - 2013. Y1 - 2013
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CVE6009 Deep Excavation and Tunnelling
AbstractA 267-m-long, 54-m-wide, and 14.9–16.4-m-deep multipropped deep excavation with three cross walls in Shanghai soft clay was constructed at a side of an existing metro station. To investigate the performance of this deep excavation and the effect of this deep excavation on adjacent metro station and shield tunnels, the ground
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Influence Analysis of Underground Excavation on the
In urban areas, it is common to construct underground structure nearby existing buildings. To investigate the impact of excavation construction on the adjacent existing buildings and surrounding soil, eight parallel scale model tests that considered the process of cut and cover construction are carried out with two kinds of the diameter of support piles, two kinds of the …
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Simplified analysis method for predicting the influence of
Feb 01, 2016 · In urban areas, excavations for cut-and-cover tunnels and basement construction cause detrimental effects on adjacent existing piles. Hence quantifying the excavation induced lateral deformations and bending moments on piles …
Get a quotePredicting Excavation-Induced Tunnel Response by Process
Apr 28, 2020 · Potential damages to existing tunnels represent a major concern for constructing deep excavations in urban areas. The uncertainty of subsurface conditions and the nonlinear interactions between multiple agents (e.g., soils, excavation support structures, and tunnel structures) make the prediction of the response of tunnel induced by adjacent excavations a …
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