Seismic Pullout Capacity of Inclined Anchor Plates in Sand
Seismic Pullout Capacity of Inclined Anchor Plates in Sand
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DOI：
10.1007/s10706-016-0133-4
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发表时间：
2017-04
影响因子：
1.7
通讯作者：
P. Bhattacharya;J. Kumar
中科院分区：
文献类型：
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作者：
P. Bhattacharya;J. Kumar
通过使用下限有限元极限分析，计算了嵌入无粘性土壤介质中的倾斜条形锚板的拉拔能力，其中包括伪静态水平地震体力。通过在 0° 和 90° 之间改变锚板的倾斜角 (β)，计算了拉拔能力系数 (Fγ) 随水平地震加速度系数 (αh) 变化的变化。结果清楚地表明，随着αh值的增加，拉拔能力因子（Fγ）显着降低。与水平锚杆相比，垂直锚板由于地震力而导致的拉拔阻力减小 (1) 更为广泛，(2) 通常随着土壤摩擦角 (φ) 的增加而减小，(3) 随着土壤与锚板之间的摩擦角 (δ) 的增加而增加。还通过改变α和β来检查锚板周围破坏区域的发展。分析获得的结果与文献报道的解决方案非常吻合。
By using the lower bound finite elements limit analysis, the pullout capacity of an inclined strip anchor plate embedded in a cohesionless soil medium has been computed with an inclusion of pseudo-static horizontal earthquake body forces. The variation of the pullout capacity factor (Fγ) with changes in horizontal earthquake acceleration co-efficient (αh) has been computed by varying the inclination angle (β) of the anchor plate between 0° and 90°. The results clearly reveal that the pullout capacity factor (Fγ) decreases significantly with an increase in the value ofαh. The reduction in the pullout resistance due to seismic forces (1) becomes much more extensive for a vertical anchor plate as compared to the horizontal anchor, (2) decreases generally with increases in the soil friction angle (ϕ) and (3) increases with an increase in friction angle between soil and anchor plate (δ). The developments of the failure zone around the anchor plate were also examined by varyingαhandβ.The results obtained from the analysis compare well with the solutions reported in literature.