Ground Improvement as Alternative to Piling – Effective Design Solutions for Heavily Loaded Structures

Sondermann, Wolfgang

doi:10.1007/978-3-030-01917-4_1

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Due to their larger diameter and in addition higher hydraulic conductivity, the stone columns offer much rapid consolidation than prefabricated vertical drains and sand compaction piles [8]. In contrast to pile foundations, stone columns are effective and friendly to the environment [9].…”

Section: Introductionmentioning

confidence: 99%

Load-Settlement Characteristics of Stone Column Reinforced Soft Marine Clay Deposit: Combined Field and Numerical Studies

Basack

Nimbalkar

2023

Sustainability

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Foundations supporting infrastructure built on soft and compressible marine soil are unlikely to sustain due to possibility of undrained shear failure or excessive settlement of the supporting soil. This necessitates the importance of implementing an adequate ground improvement strategy. Among different techniques, soft soil reinforcing by the installation of stone columns is one of the most successful methods in terms of long-term stability of foundations. To investigate the load-settlement characteristics of such reinforced soil, a group of closely spaced stone columns was constructed at a location along the eastern coast of Australia. The site geology revealed thick layers of soft, compressible marine clay deposit. These stone columns were loaded by constructing earthen embankment and the resulting load-settlement characteristics were measured by an array of sensors. A two-dimensional plane strain analysis was performed using finite element modeling simulations. Comparison of numerical results with the field data demonstrated accuracy of the numerical model. Additional studies were carried out to investigate the efficiency of the model. This paper integrates the new findings from the full-scale field study and advanced numerical simulations while drawing pertinent conclusions.

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Section: Introductionmentioning

confidence: 99%

Load-Settlement Characteristics of Stone Column Reinforced Soft Marine Clay Deposit: Combined Field and Numerical Studies

Basack

Nimbalkar

2023

Sustainability

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“…In civil engineering, the original foundations with the poor performance in stability, deformation, or permeability generally need to be reinforced to form the artificial foundations [18]. Based on the stabilization mechanism of ground improvement, the mitigation techniques can be divided into as follows: remove and replace, compaction or densification, drainage or consolidation, and reinforcement and modification [19,20]. Owing to the existence of ground ice, the geotechnical properties of permafrost are affected by the variation of ground temperature when it serves as the foundation materials for construction [21].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Necessity and Feasibility for Ground Improvement in Warm and Ice‐Rich Permafrost Regions

Wang

Zhang

Chai

et al. 2022

Advances in Civil Engineering

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Characterized by low bearing capacity and high compressibility, warm and ice-rich frozen soil is a kind of problematic soil, which makes the original frozen ground formed by of that unreliable to meet the stability requirements of engineering infrastructures and foundations in permafrost regions. With the design and construction of major projects along the Qinghai-Tibet Engineering Corridor (QTEC), such as expressway and airport runway, it is a great challenge to favor the stability of overlying structures by formulating the proper engineering design principles and developing the valid engineering supporting techniques. The investigations carried out in recent years indicated that warm and ice-rich permafrost foundations were widespread, climate warming was significant, and the stability of existing engineering structures was poor, along the QTEC. When the warm and ice-rich frozen ground is used as the foundation soil, the implementation of ground improvement is an alternative measure to enhance the bearing capacity of foundation soil and eliminate the settlement of structures during operation, in order to guarantee the long-term stability of the structures. Based on the key factors determining the physicomechanical properties of frozen soil, an innovative idea of stabilizing the warm and ice-rich frozen soil based on chemical stabilization is proposed in this study, and then, an in situ ground improvement technique is introduced. This study intends to explore the feasibility of ground improvement in warm and ice-rich permafrost regions along the QTEC based on in situ chemical stabilization and provide the technical support and scientific reference to prevent and mitigate the hazards in the construction of major projects in the future.

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Field Installation Effects of Stone Columns on Load Settlement Characteristics of Reinforced Soft Ground

et al. 2022

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Ground Improvement as Alternative to Piling – Effective Design Solutions for Heavily Loaded Structures

Cited by 3 publications

References 2 publications

Load-Settlement Characteristics of Stone Column Reinforced Soft Marine Clay Deposit: Combined Field and Numerical Studies

Load-Settlement Characteristics of Stone Column Reinforced Soft Marine Clay Deposit: Combined Field and Numerical Studies

Analysis of Necessity and Feasibility for Ground Improvement in Warm and Ice‐Rich Permafrost Regions

Field Installation Effects of Stone Columns on Load Settlement Characteristics of Reinforced Soft Ground

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