摘要
运用经典非线性研究方法Matlockp-y曲线法研究横向荷载作用下预制螺旋桩的受力机理,根据等效刚度原则,推导了螺旋桩等效直径公式;对比不同叶片距宽比下螺旋桩试验模型桩的p-y曲线,分析影响螺旋桩横向承载力的影响因素;基于数值分析模型,建立不同直径下普通直径桩的p-y曲线进行承载力和位移分析,同时与试验模型螺旋桩p-y曲线进行对比分析,验证推导的理论计算公式的适用性。结果表明,在横向荷载作用下螺旋桩的p-y曲线分析中,利用等效刚度原则推导出的等效直径的理论公式,考虑了决定螺旋桩承载力的主要因素,公式具有一般适用性,并且适用于工程实际的计算。
Using the classical nonlinear research method Matlock the p-y curve method is used to study the mechanical mechanism of prefabricated spiral pile under lateral load.According to the principle of equivalent stiffness,the formula of equivalent diameter of spiral pile is derived.The p-y curves of experimental model pile under different blade spacing width ratio are compared to analyze the influencing factors of transverse bearing capacity of spiral pile.Based on the numerical analysis model,the p-y curves of ordinary diameter pile under different diameters are established to carry out the bearing capacity At the same time,compared with the p-y curve of the experimental model,the applicability of the theoretical calculation formula is verified.The results show that in the analysis of p-y curve of spiral pile under lateral load,the theoretical formula of equivalent diameter derived from the principle of equivalent stiffness takes into account the main factors that determine the bearing capacity of spiral pile.The formula has general applicability and is applicable to the calculation of engineering practice.
作者
刘杰民
侯典国
宿宝忠
田玉兵
钟岱辉
胡文军
王培森
LIU Jiemin;HOU Dianguo;SU Baozhong;TIAN Yubing;ZHONG Daihui;HU Wenjun;WANG Peisen(Shandong Weilai High Speed Railway Co.,Ltd.,Jinan 250098,China;Zhongyin Real Estate Co.,Ltd.,Jinan 250101,China;Shandong Jianzhu University,Jinan 250101,China)
出处
《建筑结构》
CSCD
北大核心
2021年第S01期2113-2118,共6页
Building Structure
基金
山东省高校科技计划项目(J18KA216)
关键词
横向荷载
螺旋桩
等效直径
P-Y曲线
transverse load
spiral pile
equivalent diameter
p-y curve
