Study of the crack propagation characteristics of brittle materials at low temperatures based on 3D-ILC

Wang, Xiang; Zhu, Zhende; Wang, Haijun; Zhu, Shu; Chen, Yingjie

doi:10.1007/s10853-024-09389-8

J Mater Sci

2024

DOI: 10.1007/s10853-024-09389-8

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Study of the crack propagation characteristics of brittle materials at low temperatures based on 3D-ILC

Xiang Wang,

Zhende Zhu,

Haijun Wang

et al.

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Cited by 1 publication

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Deformation Effects of Deep Foundation Pit Excavation on Retaining Structures and Adjacent Subway Stations

Jiang,

Zhu,

Que

et al. 2024

Buildings

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In complex underground conditions, the excavation of deep foundation pits has a significant impact on the deformation of retaining structures and nearby subway stations. To investigate the influence of deep excavation on the deformation of adjacent structures, a three-dimensional numerical model of the foundation pit, existing subway station, and tunnel structure was established using FLAC 3D software, based on the Shenzhen Bay Super Headquarters C Tower foundation pit project. The study analyzed the deformation characteristics of retaining structures, adjacent subway stations, and tunnels during different stages of deep excavation, and the accuracy of the numerical simulation results was validated through field monitoring data. The results indicate that during the excavation process of the foundation pit, the lateral horizontal displacement of the retaining structure is generally small, with a typical “concave inward” lateral deformation curve; the horizontal displacement value of the contiguous wall section is less than that of the interlocking pile section. The bending moments of the retaining structure show a distribution pattern with larger values in the middle and smaller values at the top and bottom of the pit, with a relatively uniform distribution of internal support forces. The maximum displacement of the nearby subway station is 8.75 mm, and the maximum displacement of the subway tunnel is 2.29 mm. The research findings can provide references for evaluating the impact of newly built foundation pits near subway stations and contribute to the rational design and safe construction of new projects.

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Deformation Effects of Deep Foundation Pit Excavation on Retaining Structures and Adjacent Subway Stations

Jiang,

Zhu,

Que

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

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Study of the crack propagation characteristics of brittle materials at low temperatures based on 3D-ILC

Cited by 1 publication

References 24 publications

Deformation Effects of Deep Foundation Pit Excavation on Retaining Structures and Adjacent Subway Stations

Deformation Effects of Deep Foundation Pit Excavation on Retaining Structures and Adjacent Subway Stations

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