Influence Analysis of Underground Excavation on the Adjacent Buildings and Surrounding Soil Based on Scale Model Test

Yu, Suhui; Geng, Yun

doi:10.1155/2019/6527175

Cited by 12 publications

(9 citation statements)

References 29 publications

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“…There is an upward uplift state on the left side, which is affected by the boundary and can be ignored. There is a large amount of surface settlement in the area under the middle line of the cross-passage, and the settlement gradually decreases with the increase of the distance between the two sides of the middle line of the cross-passage (Guo et al, 2018;Jiang et al, 2018;Zhang et al, 2018a;Yu and Geng, 2019). When the second Frontiers in Earth Science frontiersin.org 10 layer guide tunnel is excavated through the existing line, it has little influence on the surface settlement and track settlement.…”

Section: Stratum Subsidencementioning

confidence: 99%

Tunneling construction technology of shafts and cross-passages under strictly controlling deformation of the existing railway

Liu

Xu²,

Li³

et al. 2023

Front. Earth Sci.

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Underground construction will have more or less adverse effects on adjacent existing buildings with more and more existing buildings above ground. However, this situation has only been reported by a small number of researchers. In view of this, this article takes the existing airport line shaft and horizontal passage project in the western suburb of Beijing Metro Line 12 as the background to study the impact of the construction of subway station and shaft passage on the adjacent existing railway. Based on the above project reality, under the action of pavement load, the effects of different parameters (the distance between the surface measuring point and the middle line of the transverse passage and the substep of construction loading sup step) on the surface settlement and track deformation of the shaft and cross-passage through the existing railway are studied by numerical analysis method. The calculation results show that the construction method of shaft and cross passage is reasonable. The comprehensive reinforcement measures of subgrade, rail and hole are effective, effectively controlling the deformation of subgrade and rail within the standard value (surface settlement ≤60 mm, rail deformation ≤6 mm). In addition, the numerical simulation data can better represent the actual situation as a whole.

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Section: Stratum Subsidencementioning

confidence: 99%

Tunneling construction technology of shafts and cross-passages under strictly controlling deformation of the existing railway

Liu

Xu²,

Li³

et al. 2023

Front. Earth Sci.

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“…is FE code has been applied successfully in solving many geotechnical problems such as slope stability [41], soil-structure interactions [42][43][44], excavations [45][46][47][48], tunnelling [49], and fluid-mechanical interactions [50].…”

Section: Finite Element Codementioning

confidence: 99%

Ground Deformation Characteristics Induced by Mechanized Shield Twin Tunnelling along Curved Alignments

Guo

et al. 2021

Advances in Civil Engineering

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This paper investigates the ground deformation characteristics induced by mechanized shield twin tunnelling along curved alignments by adopting the nonlinear three-dimensional (3D) finite element method (FEM). The performance of the adopted FEM is demonstrated to be satisfactory by comparing the numerical analysis results with the field monitoring data in a typical case history and with the predicted results generated by a modified version of the Peck’s empirical Gaussian formula. It has been found that the tunnelling-induced transverse ground surface settlement troughs and the distributions of the subsurface horizontal and vertical ground displacements are mostly similar in both form and magnitude for the considered various radii of curvature of tunnel alignment including 50 m, 100 m, 150 m, 200 m, 250 m, 300 m, 400 m, and infinity (i.e., straight-line tunnel). Considering the variational characteristics of the ground deformations with the magnitude of the radius of curvature, the radius of curvature of 100 m can be regarded as a critical tunnel alignment radius of curvature controlling the transformation of the curved tunnelling-induced ground deformational behaviors. For the benefit of geotechnical engineers interested in curved tunnelling with a small radius of curvature, a discussion of the technologies for reducing the overexcavation and improving the accuracy of tunnel lining segment installation is also presented.

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“…e first level of props was installed at 2.0 m below the ground surface. e props are modeled as soft with axial rigidity of 81 × 10 3 kNm [21][22][23][24][25][26]. A 60 m high, 15 m wide 20storey, concrete building with three spans in each direction was selected in the study.…”

Section: Development Of Three-dimensional Finite Element Modelmentioning

confidence: 99%

“…Among those numerical studies, however, responses of the framed building to excavation were reported in a limited number of studies. Most of these aforementioned research studies only examined the tunnelling effects on buildings founded on shallow footings [21][22][23][24]. erefore, there is a gap of systematic research on the responses of a high-rise building subjected to live load and resting on the piled raft to advancement of adjacent excavation.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Multipropped Deep Excavation‐Induced Ground Movements on Adjacent High‐Rise Building Founded on Piled Raft in Sand

Soomro

Mangi

Cheng

et al. 2020

Advances in Civil Engineering

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In this paper, a three-dimensional numerical parametric study was conducted to predict the deformation mechanism of a 20-storey building sitting on a (4 × 4) piled raft to an adjacent 25 m deep basement excavation. The influences of different excavation depths were investigated. An advanced hypoplastic sand model (which is capable of taking small-strain stiffness into account) was adopted to capture soil behaviour. The computed results revealed that excavation adjacent to a building resting on the piled raft caused significant settlement, differential settlement, lateral deflection, and interstorey drift in the building. With settlement due to working load (i.e., 4.8dp%), the total settlements of the building (7.8dp%) exceed the maximum allowable foundation settlement (i.e., 50 mm). In addition, substantial bending moment, shear forces, and changes in axial load distribution along pile length were induced. The findings from this study revealed that the building and pile responses are significantly influenced by the excavation depth.

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Influence Analysis of Underground Excavation on the Adjacent Buildings and Surrounding Soil Based on Scale Model Test

Cited by 12 publications

References 29 publications

Tunneling construction technology of shafts and cross-passages under strictly controlling deformation of the existing railway

Tunneling construction technology of shafts and cross-passages under strictly controlling deformation of the existing railway

Ground Deformation Characteristics Induced by Mechanized Shield Twin Tunnelling along Curved Alignments

The Effects of Multipropped Deep Excavation‐Induced Ground Movements on Adjacent High‐Rise Building Founded on Piled Raft in Sand

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