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Analysis of failure of a bridge foundation under rock impact

Content Provider	Springer Nature Link
Author	Lu, Y. E. Zhang, L. M.
Copyright Year	2012
Abstract	A bridge pier supported on two drilled shafts collapsed due to the impact by a 130-ton rock in a landslide event. A series of static and dynamic numerical simulations is conducted using a nonlinear finite element analysis program to investigate the bearing behavior and responses of the bridge foundation under rock impact. The rock impact load is evaluated according to the site conditions. The deflection histories at the striking point and the internal forces in the drilled shafts during rock impacts in different directions are analyzed. The bridge pier exhibits significant system effects: the failure of the bridge pier is initiated by the failure of one pier column or one drilled shaft first, followed by the failure of the entire pier. The effects of impact loading direction, striking location, and characteristics of impact load on the behavior of the bridge pier are examined through a parametric study. The capacities of the pier along different loading directions are different due to differences in the group effects of the drilled shafts. The bridge pier is strongest when the impact load is along the 45° direction with respect to the shaft row, and weakest when the impact load is perpendicular to the shaft row.
Starting Page	57
Ending Page	68
Page Count	12
File Format	PDF
ISSN	18611125
Journal	Acta Geotechnica
Volume Number	7
Issue Number	1
e-ISSN	18611133
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-01-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bridge foundation Drilled shafts Impact load Lateral load Pile foundations Structural Mechanics Continuum Mechanics and Mechanics of Materials Soil Science & Conservation Soft and Granular Matter, Complex Fluids and Microfluidics Geoengineering, Foundations, Hydraulics Geotechnical Engineering & Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Geotechnical Engineering and Engineering Geology

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