基于Abaqus比较2种桩-土接触关系建模方法

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中图分类号：TU943；TP391.99 文献标志码：B

Comparison of two modeling methods for pile-soil contact relationship based on Abaqus

TANG Weizhi ， LU Hui2，YAN Wenchang'，YAN Chao ， CAI Yongxiang HUANG Houxu1，3， WU Xuhui4， YIN Shuai1，3，5

（1.School of Civil Engineering，Anhui Jianzhu University，Hefei 230601，China；2.China Water Huaihe Planning， Design and Research Co.，Ltd.，Hefei 230601，China；3.Anhui Instituteof Inteligent Underground Detection Technology， Hefei 230601，China；4.Anhui Branch，Huazhong Construction Co.，Ltd.，ChinaConstruction Eighth Engineering Division Co.，Ltd.，Fuyang 2360O，Anhui，China；5.Anhui Green Mine Enginering Research Center，Hefei 230088，China）

Abstract： Based on Abaqus， the single pile examples from diffrent sites are modeled using thin-layer coeffcient method and master-slave surface contact method to simulate different pile-soil contact surfaces. The mechanical bearing characteristics under vertical load are analyzed， and the applicabilities of the two contact surface modeling methods are compared and analyzed from five aspects：modeling complexity， calculation accuracy，calculation time，soil composition，and pile-soil contact surface parameters.The results indicate that： both modeling methods for pile-soil contact surfaces have high accuracy；the modeling process of thin-layer coeficient method is simple and the calculation speed is fast；the influence of soil internal friction angle on the two methods is basically the same，and the master-slave surface contact method is more dependent on the friction coefficient of the pile-soil contact surface.

Key words：pile-soil contact；thin-layer coefficient method；master-slave contact method；numericalsimulation； contact surface parameter

0 引言

当采用数值模拟开展桩体承载特性的相关研究时，桩与土之间相互作用关系的建立是最为重要的步骤之一。（剩余5800字）