当前位置: X-MOL 学术Bull. Earthquake Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Performance of piles with different batter angles in laterally spreading soil: a probabilistic investigation
Bulletin of Earthquake Engineering ( IF 3.8 ) Pub Date : 2020-08-20 , DOI: 10.1007/s10518-020-00936-7
J. S. Rajeswari , Rajib Sarkar

Load imposed by laterally spreading soil increases the vulnerability of pile foundations to seismic damage. A probabilistic investigation has been carried out for evaluation of behavior of single piles, with different batter angles (0°, ± 10°, ± 20°) and slenderness ratios (15, 20, 25), subjected to laterally spreading ground displacements through Beam on Nonlinear Winkler Foundation approach. Effect of shapes of py curves of liquefiable soil layer on the response of piles has been evaluated. It is inferred that the conventional concave py curves underestimate the pile response compared to the convex py curves. Prediction models for maximum bending moment and pile head displacement are proposed for piles with different batter angles. Probability of failure of piles under different performance criteria are then evaluated using MonteCarlo simulation technique. Finally, probabilistic risk factors are evaluated to assess the risk imposed by various random parameters on the overall response of piles.



中文翻译:

侧向散布土壤中不同面角桩的性能:概率研究

横向传播的土壤所施加的载荷增加了桩基对地震破坏的脆弱性。已经进行了概率研究,以评估不同击球角(0°,±10°,±20°)和细长比(15、20、25)的单桩的性能,这些桩通过横向位移关于非线性Winkler基础方法。的形状的效果p - ý液化土层上桩的响应的曲线已被评估。据推断,传统的凹p - Ÿ相比凸曲线低估桩响应p - ÿ曲线。针对不同面角的桩,提出了最大弯矩和桩头位移的预测模型。然后使用蒙特-卡洛模拟技术评估在不同性能标准下桩的破坏概率。最后,评估概率风险因素,以评估各种随机参数对桩的整体响应造成的风险。

更新日期:2020-08-20
down
wechat
bug