岩土工程学报2023，Vol.45Issue(z2)：85-90,6.DOI:10.11779/CJGE2023S20006
砂土中单桩横向承载的边界面塑性p-y模型研究
Bounding surface plastic p-y model for a single laterally loaded pile in sand
摘要
Abstract
In ocean engineering practice,laterally loaded piles are usually analyzed using the nonlinear Winkler foundation beam method,in which the soil-structure interaction is modelled by means of the p-y curve,but now the API/DNV rules are only valid for few soils and pile conditions,and the p-y hysteresis curve is not given under cyclic loading.A simplified bounding surface plastic shear stress-shear strain model for sandy soil under monotonic and cyclic loads is proposed,and a method is introduced for the establishment of p-y curves from the proposed model.Based on the scaling of stress and strain into compatible soil reaction p and pile deflection y respectively,the proposed method has good theoretical basis.According to the p-y curve of sand in the API rule,the API p-y hysteresis curve is established using the Masing rule and compared with the bounding surface plastic p-y curve,and the variation characteristics of secant stiffness and damping ratio with displacement amplitude are analyzed.Finally,the validity of the proposed p-y curve is verified by the model test results.关键词
边界面塑性/p-y曲线/横向承载桩/循环荷载Key words
bounding surface plasticity/p-y curve/laterally loaded pile/cyclic loading分类
建筑与水利引用本文复制引用
汪明元,孙吉主,王勇,杨洋..砂土中单桩横向承载的边界面塑性p-y模型研究[J].岩土工程学报,2023,45(z2):85-90,6.基金项目
国家自然科学基金面上项目(51979269) （51979269）
