Ground movements induced by installation of twin large diameter deeply-buried caissons: 3D numerical modeling

Lai, Fachun; Zhang, Ningning; Liu, Songyu; Sun, Yanxiao; Li, Yaoliang

doi:10.1007/s11440-021-01165-1

Cited by 37 publications

(11 citation statements)

References 55 publications

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“…The Circle Rotation method facilitates calm communication among learners and provides opportunities for more practice with rotating pairs. Lai, et [47] modified the inner-outer circle rotation technique into three techniques: Onion, Poster Carousel, and Titles and Art Gallery. According to Ulfah and Pujihartono [48], this method makes the learning process easier and more enjoyable and improves vocabulary.…”

Section: Circle Rotation Methodsmentioning

confidence: 99%

Chinese English language learners’ vocabulary retention: Investigating the effectiveness of neuro/metacognitive and socio-cultural strategies

Hu,

Luo

2024

BMC Psychol

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Background The acquisition of a rich vocabulary is foundational to language proficiency. In the pedagogical pursuit of effective vocabulary teaching, educators explore diverse methodologies. Researchers investigated the impact of different neurocognitive, metacognitive, and socio-cultural strategies on enhancing vocabulary learning, particularly among Chinese English Language Learners. Objectives The study aims to determine the effectiveness of techniques derived from these theories compared to traditional teaching methods in enhancing vocabulary recall and recognition among English language learners. Methodology A quasi-experimental pre-test/post-test design was employed for the experimental and control groups, comprising 90 Chinese EFL learners selected from educational institutions in 2022–2023. The experimental group (n = 45) received instruction involving visual imagery, multisensory rotation, circle rotation, and mind mapping over eight sessions, while the control group (n = 45) received traditional teaching methods. Findings Statistical analysis, utilizing covariance and analysis of variance with SPSS software version 22, revealed significant improvements in recall and vocabulary recognition within and between the experimental and control groups. Conclusions The results indicate that incorporating techniques based on Neuro-Cognitive, Multimedia, Socio-Cultural, and Metacognitive theories positively influences vocabulary recall and recognition. This suggests the efficacy of these innovative methods in enhancing English language learning, highlighting their potential for broader integration into EFL instruction.

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Section: Circle Rotation Methodsmentioning

confidence: 99%

Chinese English language learners’ vocabulary retention: Investigating the effectiveness of neuro/metacognitive and socio-cultural strategies

Hu,

Luo

2024

BMC Psychol

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“…A variance decomposition procedure (ANOVA) involved in the MARS model was used to calculate the generalized cross-validation (GCV) value of each input variable, which enables further evaluation of the relative importance index (RII). At present, MARS has been widely used for the curve fitting in multi-dimensions for various geotechnical applications (Zhang et al, 2019, Zheng et al, 2020, Zhou et al, 2020a, Lai et al, 2021. More details can be found in Zhang (2020).…”

Section: Methodology Of Marsmentioning

confidence: 99%

“…This unique form of excavation, composed of the outer pit and the inner, is commonly known as the pit-in-pit (PIP) excavation (Sun et al, 2017(Sun et al, , 2018Tan et al, 2018;Wang et al, 2020;Chen et al, 2020;Sun & Xiao, 2021). Under this context, especially in some coastal dense urban areas, the complicated surrounding environments and geological conditions pose great challenges to geotechnical engineers (Lai et al, 2020b(Lai et al, , 2021(Lai et al, , 2022a.…”

Section: Introductionmentioning

confidence: 99%

Undrained stability of pit-in-pit braced excavations under hydraulic uplift

et al. 2022

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“…In addition, to determine the physical property index of the soil, representative soil samples were selected to carry out laboratory soil tests, e.g., direct shear tests, compaction tests, and unconfined compression tests. Typical static cone penetration test [21] results are shown in Figure 4. e typical physical property index for each soil layer is shown in Table 1.…”

Section: Engineering Geological Conditionsmentioning

confidence: 99%

Monitoring and Prediction Analysis of Settlement for the Substation on Soft Clay Foundation

Chen

Xue

Wang

et al. 2022

Advances in Civil Engineering

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The bearing capacity of soft clay foundations is low, which easily causes excessive cumulative and uneven settlement of the substation. This will seriously threaten the safe operation of equipment in the substation. Based on a 220-kV substation project in a coastal soft clay ground, the settlement of the substation building is monitored on the spot, and the settlement law of soft clay ground is analyzed. Furthermore, a three-dimensional finite element model is developed using finite element software named ZSOIL.PC. A numerical model for predicting the settlement of soft clay ground in a substation is proposed using the appropriate element type, material constitutive model, and calculation parameters. The rationality of the numerical method is validated by comparison with the measured data. After improving the soft clay ground with the cement-soil deep mixing method, there are still certain degrees of cumulative and differential settlements in the substation distribution device building, but both are within the specification requirements. The settlement of the soft soil ground in the substation increases with time, but the growth rate gradually decreases and ultimately tends to stabilize after a certain period of time, ensuring the uniformity of foundation treatment is the key to controlling the differential settlement. The research results can provide a reference for the subsequent installation and construction of electrical equipment and the design of substation engineering in soft soil ground.

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Ground movements induced by installation of twin large diameter deeply-buried caissons: 3D numerical modeling

Cited by 37 publications

References 55 publications

Chinese English language learners’ vocabulary retention: Investigating the effectiveness of neuro/metacognitive and socio-cultural strategies

Chinese English language learners’ vocabulary retention: Investigating the effectiveness of neuro/metacognitive and socio-cultural strategies

Undrained stability of pit-in-pit braced excavations under hydraulic uplift

Monitoring and Prediction Analysis of Settlement for the Substation on Soft Clay Foundation

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