基于ADINA的桩土相互作用分析*

(1.大连海事大学 土木工程系,辽宁 大连 116026; 2.北京工业大学 建筑工程学院,北京 100022)

ADINA; 桩土相互作用; p-y曲线; 三维数值分析

Numerical Analysis of Pile-soil Interaction Based on ADINA
CUI Chunyi1,2,MENG Kun1,CHENG Xuelei1,YANG Gang1

(1. Department of Civil Engineering,Dalian Maritime University,Dalian 116026,Liaoning,China)(2. School of Civil Engineering,Beijing University of Technology,Beijing 100022,China)

ADINA; pile-soil interaction; p-y curve; 3D numerical analysis

备注

基于大型通用数值计算平台ADINA建立三维数值模型,分别结合相互作用三维接触模型和p-y曲线简化分析模型模拟桩土系统在水平荷载作用下的桩顶位移变化规律,计算分析表明:计算结果与实际测量值基本一致,验证了两种建模方式的合理性和正确性。在此基础上进一步对p-y曲线简化分析模型在不同水平荷载作用下的工作性状进行分析,计算结果表明p-y曲线简化分析模型能较好地模拟桩土间的相互作用行为,将其应用到桩基相关抗震设计中能明显减少计算求解消耗。

Based on the large general numerical computing platform ADINA,we set up the 3D numerical model. Then combined with the 3D numerical model and p-y curve simplified model,we simulated the displacement change law of the pile top in pile-soil system under the horizontal load. The calculation result is consistent with the measured data,and the rationality and correctness of the two modeling methods are verified. Furthermore,we analyzed the working performance of pile under horizontal load by using the p-y simplified model. The obtained result is basically consistent with the real stress situation,which indicated the p-y simplified model could simulate the pile-soil interaction. Therefore,the application of the p-y simplified model in the seismic design of pile foundation could greatly reduce the calculation of consumption,which also has a very important engineering significance.