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Improved prediction of pile bending moment and deflection due to adjacent braced excavation

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 11,   Pages 1739-1759 doi: 10.1007/s11709-023-0961-2

Abstract: This study develops equations to predict the existing pile bending moment and deflection produced byInfluential parameters (i.e., the excavation geometry, diaphragm wall thickness, pile geometry, strengthThe estimation results of the developed equations can provide satisfactory pile bending moment and deflection

Keywords： pile responses     excavation     prediction     deflection     bending moments    

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Numerical analysis on seismic response and failure mechanism of articulated pile−structure system in

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-024-0958-5

Abstract: This study investigates the seismic response and failure mode of a pile−structure system in a liquefiablesite by employing a numerical simulation model combined with the shaking-table results of a soil−pileThe pile and soil responses obtained from the numerical simulations agreed well with the experimentalThe peak acceleration of the soil and pile was not clearly amplified in the saturated sand layer butis caused by an excessive bending moment in the middle of the pile shaft if the link between the pile

Keywords： numerical simulation     soil liquefaction     pile foundation     shaking-table experiment     seismic responses    

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Development of design charts to predict the dynamic response of pile supported machine foundations

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 4,   Pages 663-679 doi: 10.1007/s11709-024-1024-z

Abstract: The experimental responses of model piles are scaled up and these responses exhibit good agreement withThis study also extends to estimation of the errors in computing frequency–amplitude responses with anincrease in pile length.It is found that, with an increase in pile length, the errors also increase.of pile supported machine foundations.

Keywords： pile foundation     vertical vibration     coupled vibration     continuum approach     soil–pile separation     boundary    

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Discrepant responses of soil organic carbon dynamics to nitrogen addition in different layers: a case RESEARCH ARTICLE

Frontiers of Agricultural Science and Engineering 2024, Volume 11, Issue 2,   Pages 314-325 doi: 10.15302/J-FASE-2024565

Abstract:

Empirical research indicates that heightened soil nitrogen availability can potentially diminish microbial decomposition of soil organic carbon (SOC). Nevertheless, the relationship between SOC turnover response to N addition and soil depth remains unclear. In this study, soils under varying N fertilizer application rates were sampled up to 100 cm deep to examine the contribution of both new and old carbon to SOC across different soil depths, using a coupled carbon and nitrogen isotopic approach. The SOC turnover time for the plot receiving low N addition (250 kg·ha−1·yr−1 N) was about 20−40 years. Conversely, the plot receiving high N (450 kg·ha−1·yr−1 N) had a longer SOC turnover time than the low N plot, reaching about 100 years in the upper 10−20 cm layer. The rise in SOC over the entire profile with low N addition primarily resulted from an increase in the upper soil (0−40 cm) whereas with high N addition, the increase was mainly from greater SOC in the deeper soil (40−100 cm). Throughout the entire soil layer, the proportion of new organic carbon derived from maize C4 plant sources was higher in plots treated with a low N rate than those treated with a high N rate. This implies that, in contrast to low N addition agricultural practices, high N addition predominantly enhances the soil potential for fixing SOC by transporting organic matter from surface soils to deeper layers characterized by more stable properties. This research offers a unique insight into the dynamics of deep carbon under increased N deposition, thereby aiding in the formulation of policies for soil carbon management.

Keywords： case study agroecosystem     Discrepant responses soil    

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Microbial responses to the use of NaClO in sediment treatment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1451-1

Abstract:

• Chlorine addition enhanced the release of TOC, TN from the sediment.

Keywords： Sediment chlorination     Substance mobility     Microbial response     Community composition     Function    

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Study on load bearing characteristic of cast in situ DX group pile with numerical analysis

Zhang Qinglin,Chen Lihong

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 51-59

Abstract:

This paper analyzes 4 types of group-pile which contains 4 piles withThe main conclusions are: group pile effect of DX pile increases sharply when pile spacing decreases；the bearing capacity of 3D spacing group-pile is 1.32 times larger than that of 1.5D spacing group-pile；effect coefficient of group-pile increases from 0.59 to 0.78 when spacing increases from 1.5D to 3D；when the spacing of pile increases.

Keywords： DX pile     group-pile     settlement     numerical analysis    

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SUPEROXIDE DISMUTASE FAMILY GENES IN WATERMELON AND THEIR RESPONSES TO DIFFERENT ABIOTIC STRESSES

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 645-658 doi: 10.15302/J-FASE -2020350

Abstract: dismutase (SOD) is an important enzyme in the antioxidant system of plants and plays a vital role in stress responses

Keywords： abiotic stress / expression analysis / phylogeny / SOD / superoxide dismutase / watermelon    

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Finite element prediction on the response of non-uniformly arranged pile groups considering progressivefailure of pile-soil system

Qian-Qing ZHANG, Shan-Wei LIU, Ruo-Feng FENG, Jian-Gu QIAN, Chun-Yu CUI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 961-982 doi: 10.1007/s11709-020-0632-5

Abstract: A uniform arrangement of individual piles is commonly adopted in the conventional pile group foundationLarge differential settlement of pile groups will decrease the use-safety requirements of building, evenThis paper presents a finite element analysis on the response of pile groups with different layouts ofindividual piles in pile groups.Furthermore, the response of non-uniformly arranged pile groups, e.g., individual piles with variable

Keywords： numerical simulation     non-uniformly arranged pile groups     differential settlement     pile-soil interaction    

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Prediction of bearing capacity of pile foundation using deep learning approaches

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 6,   Pages 870-886 doi: 10.1007/s11709-024-1085-z

Abstract: accurate prediction of bearing capacity is crucial in ensuring the structural integrity and safety of pileShort-Term Memory (LSTM), and Bidirectional LSTM (BiLSTM) algorithms utilizing a data set of 257 dynamic pileThe prediction of pile-bearing capacity is strongly influenced by ram weight (having a considerable multicollinearitystudy, the recurrent neural network model has the least performance and accuracy in predicting the pile-bearing

Keywords： deep learning algorithms     high-strain dynamic pile test     bearing capacity of the pile    

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Time-dependent deviation of bridge pile foundations caused by adjacent large-area surcharge loads in

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 2,   Pages 184-201 doi: 10.1007/s11709-024-1047-5

Abstract: TDCs) have been neglected in most previous studies investigating the deviation mechanisms of bridge pileBased on the validated FE model, the time-dependent deformation mechanism of the pile foundation wasindicating that the derived extended Koppejan model reproduced the deviation process of the bridge cap-pileThe additional load acting on the pile side caused by soil lateral deformation was mainly concentratedi>t = 3 d (where t is surcharge time), the maximum lateral additional pressure acting on Pile

Keywords： bridge pile foundation     surcharge load     soft soil     time-dependent deformation     interaction mechanism    

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Effects of acid deposition control in China: a review based on responses of subtropical forests

Frontiers of Environmental Science & Engineering 2024, Volume 18, Issue 6, doi: 10.1007/s11783-024-1837-4

Abstract:

● S and N leaching from forest soils declined due to recent decreases in anthropogenic S and N emissions in China.

Keywords： Acidification     Critical load     Nitrous oxide     Surface water chemistry     Recovery    

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Influence of axial load on the lateral pile groups response in cohesionless and cohesive soil

Jasim M. ABBASA,Zamri CHIK,Mohd Raihan TAHA

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 176-193 doi: 10.1007/s11709-015-0289-7

Abstract: The response in this assessment considered lateral pile displacement and lateral soil resistance andThe improved plots can be used for lateral loaded pile design and to produce the group action designThe effect of load combination on the lateral pile group response was performed on three pile group configurations(i.e., 2×1, 2×2 and 3×2) with four pile spacings (i.e., = 2 , 4 , 6 and 8 ).group relative to that for the single pile in case of pure lateral load.

Keywords： piles     pile group     spacing     configuration     combined load    

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Application of fuzzy analytic hierarchy process model on determination of optimized pile-type

Lei MA, Shuilong SHEN, Jinhui ZHANG, Yang HUANG, Feng SHI

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 252-257 doi: 10.1007/s11709-010-0017-2

Abstract: Pile-type selection is a very important stage of foundation design, and there are many field factorsinfluencing the decision of pile-type selection.In this study, AHP combined with fuzzy synthetic evaluation method is employed to select the type of pileThe results show that fuzzy AHP approach is an easy and efficient way for pile-type selection.

Keywords： pile type     fuzzy synthetic evaluation     analytic hierarchy process (AHP)     optimal selection    

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Comparison of shallow tunneling method with pile and rib method for construction of subway station in

Sina AMIRI; Ali Naghi DEHGHAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 704-717 doi: 10.1007/s11709-021-0746-4

Abstract: the present study, a comparison between the new shallow tunneling method (STM) and the traditional pile

Keywords： shallow tunneling method     pile and rib method     ground surface settlement     subway station construction    

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Optimum lateral extent of soil domain for dynamic SSI analysis of RC framed buildings on pile foundations

Nishant SHARMA, Kaustubh DASGUPTA, Arindam DEY

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 62-81 doi: 10.1007/s11709-019-0570-2

Abstract: SSI model for a 12 storied building frame, supported on pile foundation-soil system, is developed in

Keywords： soil structure interaction     optimum lateral extent of soil domain length     multi-storyed framed building     pile    

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Title Author Date Type Operation

Improved prediction of pile bending moment and deflection due to adjacent braced excavation

Journal Article

Numerical analysis on seismic response and failure mechanism of articulated pile−structure system in

Journal Article

Development of design charts to predict the dynamic response of pile supported machine foundations

Journal Article

Discrepant responses of soil organic carbon dynamics to nitrogen addition in different layers: a case

Journal Article

Microbial responses to the use of NaClO in sediment treatment

Journal Article

Study on load bearing characteristic of cast in situ DX group pile with numerical analysis

Zhang Qinglin,Chen Lihong

Journal Article

SUPEROXIDE DISMUTASE FAMILY GENES IN WATERMELON AND THEIR RESPONSES TO DIFFERENT ABIOTIC STRESSES

Journal Article

Finite element prediction on the response of non-uniformly arranged pile groups considering progressivefailure of pile-soil system

Qian-Qing ZHANG, Shan-Wei LIU, Ruo-Feng FENG, Jian-Gu QIAN, Chun-Yu CUI

Journal Article

Prediction of bearing capacity of pile foundation using deep learning approaches

Journal Article

Time-dependent deviation of bridge pile foundations caused by adjacent large-area surcharge loads in

Journal Article

Effects of acid deposition control in China: a review based on responses of subtropical forests

Journal Article

Influence of axial load on the lateral pile groups response in cohesionless and cohesive soil

Jasim M. ABBASA,Zamri CHIK,Mohd Raihan TAHA

Journal Article

Application of fuzzy analytic hierarchy process model on determination of optimized pile-type

Lei MA, Shuilong SHEN, Jinhui ZHANG, Yang HUANG, Feng SHI

Journal Article

Comparison of shallow tunneling method with pile and rib method for construction of subway station in

Sina AMIRI; Ali Naghi DEHGHAN

Journal Article

Optimum lateral extent of soil domain for dynamic SSI analysis of RC framed buildings on pile foundations

Nishant SHARMA, Kaustubh DASGUPTA, Arindam DEY

Journal Article