The Experts below are selected from a list of 8118 Experts worldwide ranked by ideXlab platform
Shui-long Shen - One of the best experts on this subject based on the ideXlab platform.
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Dewatering–Induced Building Settlement around a Deep Excavation in Soft Deposit in Tianjin, China
Journal of Geotechnical and Geoenvironmental Engineering, 2019Co-Authors: Yong-xia Wu, Shui-long ShenAbstract:AbstractThis case study presents an investigation on building settlement induced by dewatering for a Deep Excavation constructed in a deposit in Tianjin, China. The Excavation site is located in th...
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dewatering induced building settlement around a Deep Excavation in soft deposit in tianjin china
Journal of Geotechnical and Geoenvironmental Engineering, 2019Co-Authors: Haimin Lyu, Jie Han, Shui-long ShenAbstract:AbstractThis case study presents an investigation on building settlement induced by dewatering for a Deep Excavation constructed in a deposit in Tianjin, China. The Excavation site is located in th...
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investigation into performance of Deep Excavation in sand covered karst a case report
Soils and Foundations, 2018Co-Authors: Khalid Elbaz, Shui-long Shen, Yong Tan, Wenchieh ChengAbstract:Abstract Performing Deep Excavations in karst regions is likely lead to geo-hazards, e.g. sinkholes, water ingress, and ground surface settlement. This case report presents the performance of a 16-m Deep Excavation in sand covered karst in Metro Line no. 9, Guangzhou, China. The performances during Deep Excavation, including lateral wall deflection, vertical wall movement, ground surface settlement, and settlement of adjoining buildings, were monitored and evaluated. Based upon the interpretation of the field measurements, the following major findings were obtained: (i) the lateral wall deflection and surface settlement measurements were smaller those cited in other case studies with similar geological conditions, (ii) both the grouting of the karst cavern and the use of the socket diaphragm wall panel dominated the performance of the Deep Excavation; (iii) the type of the founding structure could significantly affect the settlement development of the adjoining buildings. This case report provides insight into the design and construction of Deep, narrow Excavations in sand covered karst in a metropolitan environment.
Gens Antonio - One of the best experts on this subject based on the ideXlab platform.
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SDMT-based numerical analyses of Deep Excavation in soft soil
2020Co-Authors: Marino A., Amoroso S., Arroyo M., Monaco P., Gens AntonioAbstract:The paper explores the application of conventional (DMT) and seismic (SDMT) dilatometer tests to an important case of Deep Excavation design. The work presents finite-element analyses simulating a Deep Excavation close to Barcelona (Spain). A thick layer of soft interbedded sandy and silty soils made characterization based on laboratory testing very difficult. SDMT offered an alternative for estimating the soil stiffness and its stress-strain dependency. Numerical results and high-quality monitoring data show quite close agreement for most phases of the construction process, supporting the use of seismic dilatometer tests in numerical analyses of Deep Excavations. The paper also indicates the importance of incorporating stiffness data at low strains. FE analyses involved some uncertainties derived from the presence of jet-grouting soil treatments. On this point, a parametric study illustrates the effects of different modeling approaches
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SDMT-Based Numerical Analyses of Deep Excavation in Soft Soil
'American Society of Civil Engineers (ASCE)', 2019Co-Authors: Di Mariano Alessandra, Amoroso Sara, Arroyo Marcos, Monaco Paola, Gens AntonioAbstract:The paper explores the application of conventional (DMT) and seismic (SDMT) dilatometer tests to an important case of Deep Excavation design. The work presents finite-element analyses simulating a Deep Excavation close to Barcelona (Spain). A thick layer of soft interbedded sandy and silty soils made characterization based on laboratory testing very difficult. SDMToffered an alternative for estimating the soil stiffness and its stress-strain dependency. Numerical results and high-quality monitoring data show quite close agreement for most phases of the construction process, supporting the use of seismic dilatometer tests in numerical analyses of Deep Excavations. The paper also indicates the importance of incorporating stiffness data at low strains. FE analyses involved some uncertainties derived from the presence of jet-grouting soil treatments. On this point, a parametric study illustrates the effects of different modeling approaches.Publishedid 40181025T. Sismologia, geofisica e geologia per l'ingegneria sismicaJCR Journa
Jiao Zhang - One of the best experts on this subject based on the ideXlab platform.
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Risk Evaluation of Environmental Monitoring Indexes for Deep Excavation
Advanced Materials Research, 2011Co-Authors: Jiao ZhangAbstract:The risk evaluation of environmental monitoring indexes during Deep Excavation was systematically investigated and applied to a real project. The risk analysis was carried out based on the collected environmental monitoring data. The potential accidents which may be caused by the abnormal environmental monitoring indexes were analyzed. The risk sources which may arouse the value variation of the environmental monitoring indexes were disclosed. The dynamic controlling measurements for the risk sources were suggested. The successful application of the dynamic method to the real project further verified its feasibility.
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Analytical Hierarchy Process Applied to Risk Analysis of Deep Excavation
Advanced Materials Research, 2011Co-Authors: Jiao ZhangAbstract:The application of the analytical hierarchy process (AHP) to the risk analysis of Deep Excavation was investigated. Firstly, the occurring probabilities of various risk factors during Deep Excavation were calculated. Secondly, the aftereffects of the risks were concluded by consulting the experts. Thirdly, the weight of each risk factor was obtained by AHP. Finally, the total risk of Deep Excavation could be evaluated by fuzzy complex evaluation. This risk analysis method was applied to evaluate the total risk of a real Deep Excavation, and the exemplification verified its feasibility.
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Dynamic risk analysis based on entropy measurement for the construction of Deep Excavation engineering
The 2nd International Conference on Information Science and Engineering, 2010Co-Authors: Jiao ZhangAbstract:With the quick increase in the number of various construction projects in China, many accidents related with Deep Excavation engineering have been reported. The risk analysis for the construction of Deep Excavation engineering has been paid more and more attention to recently. In this paper, a dynamic risk analysis based on entropy measurement for the construction of Deep Excavation engineering was investigated. Both the systematic entropy and the systematic entropy weight for each section of the whole construction of Deep Excavation engineering were figured out using the entropy measurement method. By analyzing and comparing the obtained values, the major risk factors were identified. These risk factors are suggested to give more concern during the construction of Deep Excavation engineering. The developed dynamic risk analysis method was successfully applied to the construction of a Deep Excavation engineering in Shanghai, China.
G T Houlsby - One of the best experts on this subject based on the ideXlab platform.
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advanced finite element analysis of a complex Deep Excavation case history in shanghai
Frontiers of Structural and Civil Engineering, 2014Co-Authors: Yuepeng Dong, H J Burd, G T HoulsbyAbstract:The construction of the North Square Shopping Center of the Shanghai South Railway Station is a large scale complex top-down Deep Excavation project. The Excavation is adjacent to several current and newly planned Metro lines, and influenced by a neighboring Exchange Station Excavation. The highly irregular geometry of this Excavation greatly increases the complexity in 3D Finite Element modeling. The advanced numerical modeling described in this paper includes detailed structural and geotechnical behavior. Important features are considered in the analysis, e.g., 1) the small-strain stiffness of the soil, 2) the construction joints in the diaphragm wall, 3) the shrinkage in the concrete floor slabs and beams, 4) the complex construction sequences, and 5) the shape effect of the Deep Excavation. The numerical results agree well with the field data, and some valuable conclusions are generated.
Xiao Zhao - One of the best experts on this subject based on the ideXlab platform.
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Optimizing of Supporting Structures for a Subway Station Deep Excavation
Soil Engineering and Foundation, 2011Co-Authors: Xiao ZhaoAbstract:For installation of prop structures,the effect of variables such as horizontal spacing,location as well as the pre-stresses within the propos,on the performance of Deep Excavations is investigated through numerical analyses with site specific subsurface conditions.Based on the analytical results,the design of supporting structures for the Deep Excavation construction of a subway station in Zhengzhou City can be optimized.The improved design had a better performance in deformation control during the Excavation and resulted in a significant cost savings.
