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A platform for research: civil engineering, architecture and urbanism
Bridge Foundation Pinning Resistance Implied by Equivalent Static Analysis Procedure for Liquefaction-Induced Lateral Spreading
Liquefaction-induced lateral soil deformation is an important design consideration for bridges in high-seismicity regions. The equivalent static analysis (ESA) procedure that has been widely adopted for this load case considers the compatibility between the soil and foundation deformation in the near-field, i.e. foundation pinning effects. However, there is not much direct guidance on the significance of the foundation pinning in the ESA relative to the free-field lateral deformations. The purpose of this study is to use a large parameter study to assess how changes in approach embankment width, soil profile, and foundation stiffness affect the compatible displacement returned by the ESA, and to characterize the foundation pinning implied by these compatible displacements through comparison to estimated free-field deformations. It is shown that the compatible displacements returned by the ESA are less than half of the free-field deformation for all cases, and that this reduction is driven primarily by the slope stability phase of the ESA.
Bridge Foundation Pinning Resistance Implied by Equivalent Static Analysis Procedure for Liquefaction-Induced Lateral Spreading
Liquefaction-induced lateral soil deformation is an important design consideration for bridges in high-seismicity regions. The equivalent static analysis (ESA) procedure that has been widely adopted for this load case considers the compatibility between the soil and foundation deformation in the near-field, i.e. foundation pinning effects. However, there is not much direct guidance on the significance of the foundation pinning in the ESA relative to the free-field lateral deformations. The purpose of this study is to use a large parameter study to assess how changes in approach embankment width, soil profile, and foundation stiffness affect the compatible displacement returned by the ESA, and to characterize the foundation pinning implied by these compatible displacements through comparison to estimated free-field deformations. It is shown that the compatible displacements returned by the ESA are less than half of the free-field deformation for all cases, and that this reduction is driven primarily by the slope stability phase of the ESA.
Bridge Foundation Pinning Resistance Implied by Equivalent Static Analysis Procedure for Liquefaction-Induced Lateral Spreading
McGann, Christopher R. (author)
Geotechnical Earthquake Engineering and Soil Dynamics V ; 2018 ; Austin, Texas
2018-06-07
Conference paper
Electronic Resource
English
| British Library Conference Proceedings | 2018
Caisson Foundation Response During Liquefaction Induced Lateral Spreading
| Springer Verlag | 2021