Computer safety analysis and research of electrified subway deep foundation pit excavation

Zhang, Dafa; Li, Jianning; Meng, Zhaohu; Han, Guangzhao; Wang, Zhigang; Guo, Kun; Man-qing, Liu; Huang, Fajing; Zhu, Wenbo; Zhang, Yunlong

doi:10.1088/1742-6596/2033/1/012132

Cited by 2 publications

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“…Currently, the most commonly used temporary support system is the steel prop system with push-pull props, which features rapid assembly and disassembly, as well as high prefabrication. Studies have shown that, during the excavation process of foundation pit engineering, different deformation patterns and impact rules on adjacent existing roads are observed depending on the support method, excavation depth, and geological conditions [18,19].…”

Section: Introductionmentioning

confidence: 99%

Excavation Effects on Reinforced Concrete Pile Foundations: A Numerical Analysis

Li,

Yi,

et al. 2024

Buildings

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The intricacies of foundation pit engineering often result in alterations to the surrounding environment, posing potential threats to the safe operation of nearby buildings and pile foundations. This study employs finite element numerical simulation to scrutinize the influence of vacuum preloading pressure, preloading duration, excavation slope ratio, excavation duration, and retaining pile wall depth on the stress and deformation of existing plain concrete pile foundations. The findings reveal that the impacts of excavation are primarily absorbed by both proximal and distal piles in relation to the pit. Moreover, elevating vacuum preloading pressure and extending the preloading duration during dewatering can lead to increased internal forces and displacement of the piles. Changes in excavation slope ratio exhibit minimal effects, while prolonged excavation duration can shift internal forces from predominantly positive to negative, with negligible impact on horizontal displacement. Importantly, augmenting the depth of the retaining pile wall embedding effectively mitigates the effects of pit excavation.

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Section: Introductionmentioning

confidence: 99%

Excavation Effects on Reinforced Concrete Pile Foundations: A Numerical Analysis

Li,

Yi,

et al. 2024

Buildings

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Construction and Quality Control of Subway Wet Loess in Concealed Tunnel Based on Particle Swarm Optimization Algorithm

2022

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To reduce urban pressure, urban rail transit has become an effective way to reduce traffic congestion, mitigate traffic accidents, reduce environmental pollution, and improve commuting efficiency. Subway as the main means of urban public transport travel, in recent years by people's favor, although the construction industry of rail transit is developing rapidly and the industry scale is expanding, but because the construction of rail transit construction projects is very difficult, especially in the wet loess within the concealed excavation tunnel, but also frequent accidents, and the quality of the project is not easy to guarantee, so the underground railroad wet loess within the concealed excavation tunnel construction technology is poor. Therefore, it is especially important to study the construction technology and project quality management of underground railway concealed tunnel in wet loess. In this paper, based on the in-depth study of the basic principle of quantum particle swarm optimization calculation and the realization of key engineering technologies, the particle swarm optimization algorithm is programed using MATLAB software, and the coding scheme, operation specification, and operation parameters are designed. Then, combined with the particle swarm optimization algorithm and assisted MATLAB software, the main analysis of the construction and quality control of wet loess in concealed tunnels of subway projects was carried out, mainly by systematizing the relationship between the three major elements of subway project schedule, cost, and management and the construction and quality control of wet loess in concealed tunnels of a subway, and concluded that the construction and quality control of wet loess in concealed tunnels of the subway needed schedule. It is concluded that the construction and quality control of subway wet loess tunnel requires stable schedule, adequate cost budget, and management personnel.

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Computer safety analysis and research of electrified subway deep foundation pit excavation

Cited by 2 publications

References 0 publications

Excavation Effects on Reinforced Concrete Pile Foundations: A Numerical Analysis

Excavation Effects on Reinforced Concrete Pile Foundations: A Numerical Analysis

Construction and Quality Control of Subway Wet Loess in Concealed Tunnel Based on Particle Swarm Optimization Algorithm

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