Research on Bearing Characteristics of Grid Composite Foundation Based on Silt Solidification
Publication: Journal of Performance of Constructed Facilities
Volume 35, Issue 5
Abstract
Soft soil foundations are often encountered in engineering construction. To make the foundation meet the engineering strength and deformation requirements, the soft soil foundation must be treated. Based on bucket foundation and silt solidification technology, the new grid composite foundation is proposed. The strength improvement mechanism of the new type foundation was analyzed according to the Mohr-Coulomb strength theory, and numerical simulations are used to carry out research on the bearing characteristics of the grid composite foundation. By carrying out load simulations for the grid foundation with different foundation widths, the failure modes corresponding to different were analyzed. With overall consideration of the side length of a solidifying grid, the foundation width, and the undrained shear strength of the soil mass, the calculation method for the bearing capacity of the grid composite foundation has been proposed. Moreover, a wall strength check is carried out according to the maximum pull stress of the solidified wall. In the field test, the results of the finite element simulation and the field test are in good agreement, further verifying the feasibility of the grid structure foundation. Thus, a theoretical reference for engineering design is provided.
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Data Availability Statement
This paper is funded supported by the Central Public Research Institutes Fundamental Research (TKS190403). Some or all of the data, models, or code that support the findings of this study are available from the corresponding author on reasonable request.
Acknowledgments
This paper is funded supported by the National Natural Science Foundation of China (51979132), Natural Science Foundation of Tianjin City (16JCYBJC22200), Central Public Research Institutes Fundamental Research (TKS190403), and the Science and technology plan projects of Tianjin port. The views expressed are authors alone.
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Published In
Journal of Performance of Constructed Facilities
Volume 35 • Issue 5 • October 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jan 1, 2021
Accepted: Mar 25, 2021
Published online: Aug 9, 2021
Published in print: Oct 1, 2021
Discussion open until: Jan 9, 2022
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