Numerical modelling of the response of two heritage masonry buildings to nearby tunnelling

Pascariello, M.N.; Luciano, Antonio; Bilotta, Emilio; Acikgoz, Sinan; Mair, RJ

doi:10.1016/j.tust.2022.104845

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…Therefore, this relatively simple constitutive model is used [20,33,36]. Although more advanced constitutive models could be employed, there are no reliable data available for calibrating the model [37].…”

Section: Numerical Model Simulation Processmentioning

confidence: 99%

Numerical Analysis of the Influence of Deep Excavation on Nearby Pile Foundation Building

Wang,

Yang,

Guo

et al. 2023

Buildings

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In this paper, a numerical simulation is used to establish a three-dimensional model, which considers the height of buildings, the relative position between buildings, and foundation pits. These were studied in detail to investigate the changes in settlement of adjacent buildings and the displacement and internal force of piles caused by deep foundation pit excavation. The results indicate that the number of floors in the building, along with the angle and distance between the building and the excavation pit, have a significant impact on the settlement of the building and the deformation and internal force variation in the piles. For example, when D = 0.1 H, with the increase in the number of floors, the increase in the bending moment of pile 1 at the pile shaft is 62.63 kN·m, and the increase in the bending moment at the pile head is 224.72 kN·m. At this point, the maximum horizontal displacement of the pile shaft occurs at approximately 1.27 H. When θ = 45∘, the maximum difference between the maximum and minimum deformations of the building is 9.71 mm. When D ≤ 1.0 H, the majority of the building is in the primary influence range of surface settlement behind the wall, and the building undergoes a combined deformation of ‘upper convex’ and ‘concave’. When D > 1.0 H, the building predominantly resides in the secondary influence range, and the building undergoes a deformation of ‘upper convex’.

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Section: Numerical Model Simulation Processmentioning

confidence: 99%

Numerical Analysis of the Influence of Deep Excavation on Nearby Pile Foundation Building

Wang,

Yang,

Guo

et al. 2023

Buildings

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“…The potential applications of vibration-based SHM methods encompass the monitoring of slender structures, such as historic masonry towers [ 13 , 14 , 15 ] and buildings, such as palaces and churches [ 16 , 17 , 18 ], and bridges [ 19 , 20 , 21 ]. The practical applications of strain-based SHM methods to similar structural settings can be found in the literature [ 22 , 23 , 24 , 25 , 26 ]. Computer vision-based SHM approaches are also frequent in the literature, with interesting applications to masonry structures and more [ 27 , 28 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Strain Monitoring and Crack Detection in Masonry Walls under In-Plane Shear Loading Using Smart Bricks: First Results from Experimental Tests and Numerical Simulations

Meoni

D’Alessandro

Saviano

et al. 2023

Sensors

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A diffuse and continuous monitoring of the in-service structural response of buildings can allow for the early identification of the formation of cracks and collapse mechanisms before the occurrence of severe consequences. In the case of existing masonry constructions, the implementation of tailored Structural Health Monitoring (SHM) systems appears quite significant, given their well-known susceptibility to brittle failures. Recently, a new sensing technology based on smart bricks, i.e., piezoresistive brick-like sensors, was proposed in the literature for the SHM of masonry constructions. Smart bricks can be integrated within masonry to monitor strain and detect cracks. At present, the effectiveness of smart bricks has been proven in different structural settings. This paper contributes to the research by investigating the strain-sensitivity of smart bricks of standard dimensions when inserted in masonry walls subjected to in-plane shear loading. Real-scale masonry walls instrumented with smart bricks and displacement sensors were tested under diagonal compression, and numerical simulations were conducted to interpret the experimental results. At peak condition, numerical models provided comparable strain values to those of smart bricks, i.e., approximately equal to 10−4, with similar trends. Overall, the effectiveness of smart bricks in strain monitoring and crack detection is demonstrated.

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“…Liao et al [18] systematically studied the brittle failure of buried pipelines caused by ground subsidence and tunnel excavation through a centrifuge tests and numerical simulations. Scholars studied the influence of tunnel construction on the surrounding environment through numerical models [19][20][21]. Li et al [22] carried out model test and numerical simulation on the construction progress of the Daling tunnel.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Sheet Pile Cofferdam during Adjacent Open Cut Tunnel Construction near Lake Bottom

Cui

2023

Applied Sciences

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In water-related projects, the application of steel sheet pile cofferdams is becoming more and more widespread, and the influence of tunnel construction on the mechanical properties of adjacent cofferdams is important. In this study, the object of research was the mechanical properties of large-span steel sheet pile cofferdams. The open-cut tunnel project was located in Suzhou Yinshan Lake, China. According to the actual construction steps of the tunnel foundation pit, assuming that the soil was a small strain hardening soil model, combined with on-site monitoring data, a three-dimensional elastoplastic finite difference model was established. The results show that during tunnel construction, the maximum settlement of the cofferdam appeared at 0.27~0.53 m on the side of the foundation pit; the maximum horizontal displacement of the steel sheet pile occurred at the pile bottom of foundation pit side, and the seepage gradually increased during construction, eventually resulting in water gushing at the bottom of the foundation pit. After the completion of tunnel construction, the settlement value of the cofferdam presented a pattern that first increased and then decreased from the side of the foundation pit to the side of the adjacent lakeside; the steel cofferdam tilted toward the side of the foundation pit, with a maximum inclination angle of 3.37°. It should be pointed out that as the construction progressed, the axial force of the tie rods in the steel cofferdam changed from a U-shaped distribution to a V-shaped distribution. This study could provide a reference for the impact of tunnel foundation pit construction on adjacent steel cofferdam and could also provide a reference for the safety research of open-cut tunnel construction.

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Numerical modelling of the response of two heritage masonry buildings to nearby tunnelling

Cited by 7 publications

References 27 publications

Numerical Analysis of the Influence of Deep Excavation on Nearby Pile Foundation Building

Numerical Analysis of the Influence of Deep Excavation on Nearby Pile Foundation Building

Strain Monitoring and Crack Detection in Masonry Walls under In-Plane Shear Loading Using Smart Bricks: First Results from Experimental Tests and Numerical Simulations

Mechanical Properties of Sheet Pile Cofferdam during Adjacent Open Cut Tunnel Construction near Lake Bottom

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