FAN Fangfang,LI Jian,SONG Wenzhi,et al.Study on Secondary Cracking of Cracks under Horizontal Seismic Force[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(05):1113-1119.
FAN Fangfang,LI Jian,SONG Wenzhi,et al.Study on Secondary Cracking of Cracks under Horizontal Seismic Force[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(05):1113-1119. DOI: 10.13409/j.cnki.jdpme.201903029.
Study on Secondary Cracking of Cracks under Horizontal Seismic Force
Aiming at the problem of secondary cracking under horizontal seismic forces, a model describing the toe failure and base failure of a homogeneous soil slope with secondary cracking under a plane strain condition is proposed. Considering the influence of horizontal seismic force coefficient, slope gradient, and friction angle in soil, the critical height and secondary cracking depth for various crack distances from the slope shoulder and cracking depth are calculated, and the relevant charts are drawn. The larger the crack depth is, the smaller the critical height is and the smaller the secondary crack depth is. For homogeneous soil slopes with the same soil parameters and slope gradient but different crack depths, secondary cracks will develop under the same horizontal seismic force, and the sum of the two cracks is approximately the same.
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