Experimental Verification of Seismic Bearing Capacity of Near-slope Footings Using Shaking Table Tests

ABSTRACT

Monotonic and shaking table tests are performed using strip footings placed near a model slope. Test results indicate that footing restraint conditions affect the seismic response of near-slope footings, in terms of amplification factor and critical peak ground acceleration (PGA). The theoretical seismic bearing capacity correction factor (η_γe) vs. seismic coefficient (k_h) relationships based on pseudo-static methods are in good agreement with the experimental values of η_γe provided that correction factors for load inclination, load eccentricity, footing set-back are accounted for. Furthermore, a correct empirical relationship between k_h and PGA is vital in applying theoretical η_γe in earthquake engineering practices.

KEYWORDS:

• Shaking table test
• foundation
• slope
• seismic bearing capacity
• critical ground acceleration
• seismic coefficient
• seismic reduction factor

Additional information

Funding

This study is financially supported by the Ministry of Science and Technology, Taiwan under research grant: MOST 107-2221-E-006-043-MY2.