2014 Volume 70 Issue 4 Pages I_1018-I_1031
A road embankment at Tomei Expressway was collapsed by the 2009 Suruga Bay Earthquake, and the highway was stopped for about 5 days. Based on the investigation results on the reasons relating to the above collapse, the urgent inspections and seismic assessments on the highway embankments managed by West Nippon Expressway Co. Ltd. have been conducted. Because the seismic design ground motions were revised newly considering the ground motions with the long duration time and the large amplitude of accelerations recorded in the 2011 Off the Pacific coast of Tohoku Earthquake, the above seismic assessments were necessary in detail to investigate the effects of the former and newly revised seismic ground motions.
Then the seismic assessments at 3 different road embankments from the view of the performance-based design were conducted to estimate the sliding residual displacements induced by the 6 different seismic ground motions with use of Newmark Sliding Block Method. As the results, the effects on the sliding residual displacements induced by the different type of seismic ground motions are discussed, and the engineering notes to apply the seismic ground motions for the appropriate seismic design of road embankments can be indicated.
Proceedings of the JSCE Earthquake Engineering Symposium
Environmental systems research
