LI Jian-fei, SU Yang, SUN Zhi-bin, et al. 3D seismic displacement analysis method of stepped slopes reinforced
with piles based on Newmark principle[J]. 2020, 41(8): 2785-2795.
LI Jian-fei, SU Yang, SUN Zhi-bin, et al. 3D seismic displacement analysis method of stepped slopes reinforced
with piles based on Newmark principle[J]. 2020, 41(8): 2785-2795.DOI: 10.16285/j.rsm.2019.1504.
a 3D seismic displacement method of stepped slopes reinforced with piles is proposed. Firstly
based on the limit analysis
the explicit expression for the yield acceleration parameter of stepped slopes reinforced with piles is derived through the horn failure mechanism. Then the influence of different factors on is investigated through parameter analysis. The results show that multi-step slopes are safer than single-step slopes. In addition
the formula of angular velocity is derived by means of the principle of moment balance
and the angular displacement within the time of earthquake action is obtained through the quadratic integral of the angular velocity. Combined with the engineering practice
the influence of earthquake on the 3D seismic stability of stepped slopes reinforced with piles is investigated
and the corresponding engineering suggestions are also given. Finally
the sensibilities of the factors influencing on the stability of slope are analyzed
and the reference is provided for the seismic design of 3D stepped slopes reinforced with piles.