Experimental Investigation on the Effect of Volume Loss on Ground Movements Induced by Tunnelling in Sand

Wang, Tianzuo; Wang, Ruipeng; Xue, Fei; Tang, N.

doi:10.1007/s12205-022-0342-8

Cited by 4 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The overall frame of the model box is made of aluminium alloy, and the four walls are made of transparent tempered glass to allow for the acquisition of digital images of structure model and soil. The width of the box can be freely adjusted to satisfy the research requirements, and the internal dimensions of the model box are set to 1.5 m × 1 m × 0.3 m in this study [15]. A fine-grained dry silica sand with a relative density of 31% was used, part of which is sprayed black to make scattered formation in advance [15].…”

Section: Model Set Upmentioning

confidence: 99%

“…The width of the box can be freely adjusted to satisfy the research requirements, and the internal dimensions of the model box are set to 1.5 m × 1 m × 0.3 m in this study [15]. A fine-grained dry silica sand with a relative density of 31% was used, part of which is sprayed black to make scattered formation in advance [15]. The relative density of the ground is controlled by the dropping heights, which were set at 20 cm in this test.…”

Section: Model Set Upmentioning

confidence: 99%

“…According to previous studies, the friction between the tempered glass panel and the sand was small, which could be neglected [16]. The tunnel model is made of PVC pipe with a diameter (D) of 15 cm, corresponding to a tunnel with an internal diameter of 6 m in the actual project [14,15]. The geometric similarity ratio is 1:40, and the relative burial depth C/D (C, cover) is set to 1.5, corresponding to a shallow urban buried tunnel.…”

Section: Model Set Upmentioning

confidence: 99%

“…In addition, according to Ritter et al [10] and Xu et al [8], it makes little difference whether the foundations are buried in soil in the model experiments; hence, the structures are placed on the ground surface similarly in this test. A fine-grained dry silica sand with a relative density of 31% was used, part of which is sprayed black to make scattered formation in advance [15]. The relative density of the ground is controlled by the dropping heights, which were set at 20 cm in this test.…”

Section: Model Set Upmentioning

confidence: 99%

See 3 more Smart Citations

Model Test Study on the Response of Two Different Shallow-Foundation Framed Buildings under Tunnel Volume Loss

Liu,

Zhang,

Liu

et al. 2023

Buildings

Self Cite

View full text Add to dashboard Cite

In order to study the influence of tunnel volume loss on adjacent framed buildings with different shallow foundations, this paper carried out physical model experiments with two common types of footings (isolated and strip footings) under different working conditions based on the digital image correlation (DIC) technique. The main finding of the present paper is that the increase in formation loss rate will aggravate the deformation and damage of the structure, and the strip foundation shows stronger integrity and stability compared with the isolated foundation in this process. With the increase in the eccentricity of the frames with respect to the tunnel, the overall tilt and damage degree of structural elements increases first and then decreases for both foundations, reaching the maximum value with the eccentric distance of one multiple of the tunnel diameter. Interestingly, when the isolated footings are located directly above the tunnel, the damage in the inner panels is the most severe and gradually decreases with eccentricity, changing from a sagging mode to a hogging mode for the frame form. While the strip footings always maintain slight hogging, and the trend of the damage degree of panels is similar to that of elements, with the eccentric distance reaching two times the tunnel diameter, the strip foundation structure tends to be stable, while the isolated one still needs attention for its potential possibility of damage in panels. The research results have reference value for the impact assessment of adjacent shallow-foundation framed buildings in subway tunnel construction.

show abstract

Section: Model Set Upmentioning

confidence: 99%

Section: Model Set Upmentioning

confidence: 99%

Section: Model Set Upmentioning

confidence: 99%

Section: Model Set Upmentioning

confidence: 99%

See 2 more Smart Citations

Model Test Study on the Response of Two Different Shallow-Foundation Framed Buildings under Tunnel Volume Loss

Liu,

Zhang,

Liu

et al. 2023

Buildings

Self Cite

View full text Add to dashboard Cite

show abstract

“…2023, 13, 7000 2 of 17 Xue et al (2020) [21] pointed out that the tunnel will be compressed vertically. Through field monitoring, model tests and numerical analysis [22,23], the ground loss ratio and the shape of the tunnel could have a direct influence on the tunnel deformation and the internal forces in the linings of the tunnel. Based on the model test and the numerical analysis, many investigators [24,25] concluded that the maximum positive bending moment of the tunnel was likely to appear at the tunnel crown and the maximum negative bending moment was at the waist of the tunnel.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Soil–Structure Responses Induced by Tunnelling in Limited Space

Guo

Liu

2023

Applied Sciences

View full text Add to dashboard Cite

As the economy develops rapidly, newly built tunnels in congested urban areas are becoming more and more common. Based on similarity theory, this study conducted a laboratory model test to investigate the soil–structure responses induced by the construction of a new tunnel in limited space which was formed by the existing underground infrastructures. The soil movement, convergence of the tunnel and distribution of the soil stress were explored. The test results revealed that the limited space could have a significant shielding effect on the soil movement. The maximum ground subsidence and the range of ground settlement induced by the construction of the tunnel in limited space were 60% and 40%, respectively, smaller than those induced by the construction of a tunnel at a “greenfield” site. The deformation of the tunnel was also restrained distinctly. Moreover, a soil settlement trough appeared below the bottom slab of the underground structure. The findings can shed some light on the surrounding responses induced by tunnelling in limited space in soft clay and can offer the valuable guidance for the similar projects.

show abstract

Data-driven and physics-informed neural network for predicting tunnelling-induced ground deformation with sparse data of field measurement

Liu,

Liao,

Yang

et al. 2024

Tunnelling and Underground Space Technology

View full text Add to dashboard Cite

Experimental Investigation on the Effect of Volume Loss on Ground Movements Induced by Tunnelling in Sand

Cited by 4 publications

References 26 publications

Model Test Study on the Response of Two Different Shallow-Foundation Framed Buildings under Tunnel Volume Loss

Model Test Study on the Response of Two Different Shallow-Foundation Framed Buildings under Tunnel Volume Loss

Experimental Study on the Soil–Structure Responses Induced by Tunnelling in Limited Space

Data-driven and physics-informed neural network for predicting tunnelling-induced ground deformation with sparse data of field measurement

Contact Info

Product

Resources

About