CAJ | 학술논문

在分析柔性路堤下桩土受力性状的基础之上，利用有限元分析软件 Plaxis 建立复合地基数值模型，对柔性桩复合地基中不同的垫层模量及厚度的选取进行了模拟，重点研究了桩土及垫层的受力特性。分析结果表明：当其他指标相同时，在相同均布荷载下，垫层模量对关键指标的影响不大；随着垫层厚度的增加，垫层最大沉降及桩顶刺入量均逐渐减小并稳定在某一区间以内；桩顶应力及桩土应力比逐渐增大，并有逐渐稳定趋势。研究成果可为软土路堤柔性桩复合地基的设计工作提供有益参考。
재분석유성로제하장토수력성상적기출지상，이용유한원분석연건 Plaxis 건립복합지기수치모형，대유성장복합지기중불동적점층모량급후도적선취진행료모의，중점연구료장토급점층적수력특성。분석결과표명：당기타지표상동시，재상동균포하재하，점층모량대관건지표적영향불대；수착점층후도적증가，점층최대침강급장정자입량균축점감소병은정재모일구간이내；장정응력급장토응력비축점증대，병유축점은정추세。연구성과가위연토로제유성장복합지기적설계공작제공유익삼고。
Based on the analysis of flexible embankment’s pile-soil stress traits ,the numerical simulation model for dif-ferent cushion modulus and thickness were built by the finite element analysis software Plaxis to study the stress character -istics of pile soil and cushion .The results show that when the other indicators are the same ,and under the same dis-tributed load ,the cushion modulus has a little effect on key indicators ;with the increase of cushion thickness ,the largest displacement and penetration of the cushion are gradually decreased and stabilized in a certain range ;the pile-top stress and pile-soil stress ratio is gradually increased and has the signs of gradual stabilization .The research results can provide a valuable reference for the design of the flexible-pile foundation in soft base areas .