CAJ | 학술논문

采用Abaqus数值分析方法,建立双等径桩、一等径桩一支盘桩、双挤扩支盘桩模型,通过大量的数值模拟计算,分析在不同桩顶荷载、不同桩间距、不同土体泊松比条件下桩的相互影响系数以及在桩周荷载条件下对不同双桩的影响,分析表明,在线弹性变形阶段,桩与桩的影响系数近似为恒定值,与荷载水平及桩的性状无关,进入塑性阶段后,则逐渐减小最后趋于0,随着泊松比的变大,桩之间的相互作用系数逐渐减小,在相同条件下,桩周荷载对双支盘桩的影响大于双等径桩且随泊松比的增大而减小. 研究结果为实际工程中桩之间的影响情况提供参考.
채용Abaqus수치분석방법,건립쌍등경장、일등경장일지반장、쌍제확지반장모형,통과대량적수치모의계산,분석재불동장정하재、불동장간거、불동토체박송비조건하장적상호영향계수이급재장주하재조건하대불동쌍장적영향,분석표명,재선탄성변형계단,장여장적영향계수근사위항정치,여하재수평급장적성상무관,진입소성계단후,칙축점감소최후추우0,수착박송비적변대,장지간적상호작용계수축점감소,재상동조건하,장주하재대쌍지반장적영향대우쌍등경장차수박송비적증대이감소. 연구결과위실제공정중장지간적영향정황제공삼고.
Using Abaqus numerical analysis method,double equal piles,one equal pile and one squeezed branch pile,double squeezed branch piles models were built. Through lots of numerical simulation,analysis of the pile interaction coefficient under different situations,including pile load,pile spacing,soil Poisson's ratio and analysis of the influence to different double piles in surrounding load were carried out. Result shows that the pile-pile influence coefficient is approximately constant value in liner elastic deformation of loading piles ,and irrelevant to the load level and piles characters,but it decreased gradually until close to 0 in plase state,with the Poisson's ratio becomes large. The interaction coefficient gradually decreases,under the same conditions,the surrounding load have a greater impact on double equal piles than double squeezed branch piles and gradually decreases with the increase of poisson's ratio. The study provides a reference in practical engineering between different piles.