Active earth pressure on retaining wall for c-phi soil backfill under seismic loading condition
Active earth pressure on retaining wall for c-phi soil backfill under seismic loading condition
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DOI：
10.1061/(asce)gt.1943-5606.0000003
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发表时间：
2009-02
影响因子：
3.9
通讯作者：
S. Shukla;Shrawan Kumar Gupta;N. Sivakugan
中科院分区：
文献类型：
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作者：
S. Shukla;Shrawan Kumar Gupta;N. Sivakugan
本技术说明描述了考虑水平和垂直地震系数的 c-phi 土壤回填挡土墙上总主动力解析表达式的推导。将基于该表达式的结果与早期地震条件下c-phi土体充填主动力解析表达式得到的结果进行比较，发现具有相似的变化趋势。参数研究表明，随着地震系数值的增大，临界破坏面与水平面的倾角减小；值越高，下降幅度越大。总主动力随着水平地震系数值的增大而增大；而除水平地震系数值很高外，随垂直地震系数值的增大而减小。提供了水平和垂直地震系数（kh 和 kv）以及粘聚力和抗剪角值的各种组合的设计图表，用于估算实际应用中 c-phi 土壤回填挡土墙上的总主动力。
This technical note describes the derivation of an analytical expression for the total active force on the retaining wall for c-phi soil backfill considering both the horizontal and vertical seismic coefficients. The results based on this expression are compared with those obtained from earlier analytical expressions for the active force for c-phi soil backfill under seismic conditions, and found to have a similar trend of variation. The parametric study shows that the inclination of the critical failure plane with the horizontal plane decreases with the increase in values of seismic coefficients; the decrease being more for their higher values. The total active force increases with the increase in value of horizontal seismic coefficient; while it decreases with the increase in value of vertical seismic coefficient except for a very high value of horizontal seismic coefficient. Design charts are presented for various combinations of horizontal and vertical seismic coefficients (kh and kv), and values of cohesion and angle of shearing resistance for estimating the total active force on the retaining wall for c-phi soil backfill for practical applications.