CAJ | 학술논문

采用 CEL 方法(耦合的欧拉-拉格朗日分析法)对比研究桩靴下沉速度不同对计算结果的影响，分析不同桩靴下沉速度下附近桩基础的响应，研究质量放大方法的适用性。结果表明：无桩时桩靴贯入速度不同对土体阻力影响较小，土体的破坏形态和剪应力水平略有不同；桩靴贯入速度对桩身水平位移影响较小，桩靴贯入速度越大，桩身最大应力越小；质量放大系数的增加对桩身最大位移的影响较小，但对桩身最大应力有较大影响，因此建议谨慎使用质量放大方法。
채용 CEL 방법(우합적구랍-랍격랑일분석법)대비연구장화하침속도불동대계산결과적영향，분석불동장화하침속도하부근장기출적향응，연구질량방대방법적괄용성。결과표명：무장시장화관입속도불동대토체조력영향교소，토체적파배형태화전응력수평략유불동；장화관입속도대장신수평위이영향교소，장화관입속도월대，장신최대응력월소；질량방대계수적증가대장신최대위이적영향교소，단대장신최대응력유교대영향，인차건의근신사용질량방대방법。
The CEL method,which is widely used in the research on spudcan penetration,is a new simulation method.However,there are many questions which have not been answered,especially about the effect of penetration velocity and the mass scaling method.This paper firstly simulates two models with no piles which have different penetration speeds.Then,two models with square piles are also simulated with different penetration speeds.Additionally,the mass scaling method is verified.The simulation results show that the penetration speed has little effect on the soil resist-ance and more effect on the soil failure mode and shear stress.When the model has a pile,the hori-zontal displacement is relatively unaffected by the penetration speed,and the Mises stress of the pile increases with the penetration speed.The mass scaling factor also has little effect on the hori-zontal displacement of the pile.The Mises stress has an irregular relation to the mass scaling fac-tor.Therefore,caution should be carefully taken when the mass scaling method is used.