Progressive collapse analysis and robustness evaluation of a propped excavation failed due to inappropriate strut removal

Fang, Yi; Su, J.; Zheng, G.; Cheng, Xuesong; Pei, Hongfei; Liu, X. M.; Jia, Jinhu

doi:10.1007/s11440-023-01929-x

Cited by 3 publications

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The authors have made their best effort, but it is still not possible to have any field observation data to validate the results obtained from the numerical analyses. Yi et al [21] used a case study showing progressive collapse of an excavation in clay due to the inappropriate removal of struts, but normally all parties involved were not willing to share any detail to the public. This matter is highly related to the responsibilities and claims of the aftermath of construction accidents, which are typically confidential and not open to the public, thus leading to the difficulty of having field observation data to validate the results obtained from numerical analyses.…”

Section: Validation Of 2d Simulation With Osfmentioning

confidence: 99%

A Study on the Impacts of One-Strut Failure Scenarios for Deep Excavation in Loose to Medium-Dense Sand

Hsiung

Hai²,

Hsiao

2023

Sustainability

View full text Add to dashboard Cite

This study aims to identify the impacts of one-strut failure (OSF) during deep excavation in loose to medium-dense sand with respect to strut loads and wall deflections. The finite element software PLAXIS was used to carry out both 2D and 3D analyses. In addition, as two-dimensional (2D) analysis is commonly applied in engineering practice due to limited budget and time, the reasonable transferring of results obtained using 3D analyses to 2D analyses for OSF influences was explored. It was found that a failed strut located at the lowest level at the center of the excavation is the most critical case since it causes the most significant impacts on strut load transferring and additional wall deflection. In order to adequately demonstrate such impacts using 2D analyses, it is suggested that a reduction factor of axial stiffness of 2.5 should be adopted instead of removing an entire level of struts, as currently being used in 2D analyses of OSF.

show abstract

Section: Validation Of 2d Simulation With Osfmentioning

confidence: 99%