扩底抗拔桩承载力计算研究现状分析  

ANALYSIS OF THE CURRENT RESEARCH STATUS OF CALCULATION METHODS FOR THE BEARING CAPACITY OF EXPANDING BASE ANTI-PULL PILES

作　　者：张世民[1,2] 陈健 梁禄钜 ZHANG Shimin;CHEN Jian;LIANG Luju(School of Civil Engineering and Architecture,Anhui University of Technology,Anhui Huainan 232001,China;Department of Civil Engineering,Zhejiang University City College,Hangzhou 310015,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]浙大城市学院土木工程系,杭州310015

出　　处：《低温建筑技术》2023年第6期102-106,共5页Low Temperature Architecture Technology

基　　金：浙江省自然科学基金项目(LQ22E080009)。

摘　　要：为比较和分析不同理论计算方法对于扩底抗拔桩承载力计算结果的影响,总结了国内外学者的不同计算方法,运用数值模拟和各种理论计算方法进行比较和分析。结果表明摩擦圆柱法和圆柱面剪切法的误差均在20%左右,扩大系数法的误差在15%左右,因为这些方法无法准确地确定扩大头的影响范围或扩大系数。Meyerhof-Adams法考虑的参数和情况比较全面,其计算结果与数值模拟结果吻合较好。因此,Meyerhof-Adams法是一种较为可靠的计算扩底抗拔桩极限承载力的方法,而其他方法存在较大的误差和限制。In order and analyze the impact of different theoretical calculation methods on the bearing capacity calcu⁃lation results of belled anti uplift piles,different calculation methods from public papers are compared through nu⁃merical simulation and various theoretical calculation methods.The results show that the errors of the friction cylin⁃der method and the cylindrical surface shear method are both around 20%,and the error of the expansion coefficient method is around 15%,which cannot accurately determine the influence range or expansion coefficient of the expan⁃sion head.The calculation results from the Meyerhof-Adams method are in good agreement with numerical simula⁃tion results,which has comprehensive parameters and situations,making it a relatively reliable method for calculat⁃ing the ultimate bearing capacity of belled anti uplift piles,while other methods have significant errors and limita⁃tions.

关 键 词：扩底抗拔桩 极限承载力 理论计算 数值模拟 

分 类 号：TU473.1[建筑科学—结构工程]