A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Three-Dimensional Properties of MSE Bridge Abutments
Conventionally highway bridge abutments are supported on deep foundations. As an embankment approach settles, it results in a differential settlement between the approach pavement and bridge deck, which causes the traveling vehicle to experience an impact force. This phenomenon is called "bridge bump." A mechanically stabilized earth bridge abutment (MSE abutment) minimizes the damaging and unpleasant bridge bump by eliminating the differential settlement. This article reports the result of a series of 3-D nonlinear finite element analyses to investigate the performance of MSE bridge abutments supported on a U-shaped MSE Wall (UMSEW). Overall structural integrity, sufficient clearance, smooth transition from pavement to bridge deck and pleasing aesthetic appearance are critical long-term performance requirements of an MSE abutment. Three MSE abutments supporting a bridge with single span length of 48 m (160 ft) and three different footing sizes (2.17 m, 3.05 m, and 3.96 m), respectively were analyzed for the lateral deformation, vertical settlement, earth pressure, inclusion stresses, and bearing pressure underneath the footing. The analysis results show that, when founded on a sound subsoil or rock, the UMSEW effectively supports the MSE bridge abutment.
Three-Dimensional Properties of MSE Bridge Abutments
Conventionally highway bridge abutments are supported on deep foundations. As an embankment approach settles, it results in a differential settlement between the approach pavement and bridge deck, which causes the traveling vehicle to experience an impact force. This phenomenon is called "bridge bump." A mechanically stabilized earth bridge abutment (MSE abutment) minimizes the damaging and unpleasant bridge bump by eliminating the differential settlement. This article reports the result of a series of 3-D nonlinear finite element analyses to investigate the performance of MSE bridge abutments supported on a U-shaped MSE Wall (UMSEW). Overall structural integrity, sufficient clearance, smooth transition from pavement to bridge deck and pleasing aesthetic appearance are critical long-term performance requirements of an MSE abutment. Three MSE abutments supporting a bridge with single span length of 48 m (160 ft) and three different footing sizes (2.17 m, 3.05 m, and 3.96 m), respectively were analyzed for the lateral deformation, vertical settlement, earth pressure, inclusion stresses, and bearing pressure underneath the footing. The analysis results show that, when founded on a sound subsoil or rock, the UMSEW effectively supports the MSE bridge abutment.
Three-Dimensional Properties of MSE Bridge Abutments
Chang, Nien-Yin (author) / Wang, Trever (author) / Yip, Man Cheung (author)
GeoCongress 2006 ; 2006 ; Atlanta, Georgia, United States
GeoCongress 2006 ; 1-6
2006-02-21
Conference paper
Electronic Resource
English
Three-Dimensional Properties of MSE Bridge Abutments
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