Consolidation Settlement of Bridge Approach Foundation
Excessive settlement of bridge-approach pavements creates problems for both road users and transportation agencies responsible for road maintenance. An important contributing factor to this settlement is the consolidation of foundation soil. A procedure based on the nonlinear finite-element method (...
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| Veröffentlicht in: | Journal of geotechnical engineering 1991-02, Vol.117 (2), p.219-240 |
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| container_title | Journal of geotechnical engineering |
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| creator | Zaman, Musharraf Gopalasingam, Arumugam Laguros, Joakim G |
| description | Excessive settlement of bridge-approach pavements creates problems for both road users and transportation agencies responsible for road maintenance. An important contributing factor to this settlement is the consolidation of foundation soil. A procedure based on the nonlinear finite-element method (FEM), including infinite elements, is developed to analyze the consolidation settlement of embankment foundation at the bridge approach. Biot's theory of three-dimensional consolidation, as proposed by Sandhu and Wilson, is used in the development. Nonlinear behavior of the soil skeleton is represented by the modified Cam-clay model. A plane-strain infinite-element algorithm is developed. The semi-infinite domain is divided into two regions. The near field is discretized by using the eight-noded isoparametric elements, while the far field is discretized by using the infinite elements developed. The interpolation functions for the infinite element are chosen based on the far-field behavior of a homogeneous porous elastic half plane. The analysis procedure is applied to study the time-settlement history and pore-pressure dissipation characteristics of a bridge-approach site in Oklahoma. |
| doi_str_mv | 10.1061/(ASCE)0733-9410(1991)117:2(219) |
| format | Article |
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An important contributing factor to this settlement is the consolidation of foundation soil. A procedure based on the nonlinear finite-element method (FEM), including infinite elements, is developed to analyze the consolidation settlement of embankment foundation at the bridge approach. Biot's theory of three-dimensional consolidation, as proposed by Sandhu and Wilson, is used in the development. Nonlinear behavior of the soil skeleton is represented by the modified Cam-clay model. A plane-strain infinite-element algorithm is developed. The semi-infinite domain is divided into two regions. The near field is discretized by using the eight-noded isoparametric elements, while the far field is discretized by using the infinite elements developed. The interpolation functions for the infinite element are chosen based on the far-field behavior of a homogeneous porous elastic half plane. 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An important contributing factor to this settlement is the consolidation of foundation soil. A procedure based on the nonlinear finite-element method (FEM), including infinite elements, is developed to analyze the consolidation settlement of embankment foundation at the bridge approach. Biot's theory of three-dimensional consolidation, as proposed by Sandhu and Wilson, is used in the development. Nonlinear behavior of the soil skeleton is represented by the modified Cam-clay model. A plane-strain infinite-element algorithm is developed. The semi-infinite domain is divided into two regions. The near field is discretized by using the eight-noded isoparametric elements, while the far field is discretized by using the infinite elements developed. The interpolation functions for the infinite element are chosen based on the far-field behavior of a homogeneous porous elastic half plane. The analysis procedure is applied to study the time-settlement history and pore-pressure dissipation characteristics of a bridge-approach site in Oklahoma.</description><subject>Applied sciences</subject><subject>Buildings. Public works</subject><subject>Exact sciences and technology</subject><subject>Geotechnics</subject><subject>Stabilization. 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An important contributing factor to this settlement is the consolidation of foundation soil. A procedure based on the nonlinear finite-element method (FEM), including infinite elements, is developed to analyze the consolidation settlement of embankment foundation at the bridge approach. Biot's theory of three-dimensional consolidation, as proposed by Sandhu and Wilson, is used in the development. Nonlinear behavior of the soil skeleton is represented by the modified Cam-clay model. A plane-strain infinite-element algorithm is developed. The semi-infinite domain is divided into two regions. The near field is discretized by using the eight-noded isoparametric elements, while the far field is discretized by using the infinite elements developed. The interpolation functions for the infinite element are chosen based on the far-field behavior of a homogeneous porous elastic half plane. 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| ispartof | Journal of geotechnical engineering, 1991-02, Vol.117 (2), p.219-240 |
| issn | 0733-9410 1944-8368 |
| language | eng |
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| source | American Society of Civil Engineers:NESLI2:Journals:2014 |
| subjects | Applied sciences Buildings. Public works Exact sciences and technology Geotechnics Stabilization. Consolidation TECHNICAL PAPERS |
| title | Consolidation Settlement of Bridge Approach Foundation |
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