强夯动接触力的碰撞分析与并行优化求解

对强夯法加固地基机理进行数值分析。在土体应变．位移关系上采用大变形假设；在动接触力的计算中，基于碰撞分析理论，提出碰撞系数和地基等效碰撞质量的概念，建立动力形式的接触条件：在整体求解上，根据能量守恒原则，建立能量形式的补充方程，采用优化模型求解，并在优化算法上采用基于网络并行计算技术的复形法。对一具体算例进行了数值分析，得到了地基位移及动接触力在强夯作用时间内的变化规律，为精确模拟分析强夯加固机理提供了有效途径。

COLLISION ANALYSIS AND PARALLEL OPTIMUM RESOLUTION FOR DYNAMIC CONTACT ACTION

Numerical analysis is made on consolidation mechanism of foundation soil with large deformation hypothesis. Based on collision theory,the concepts of collision coefficient and equivalent collision mass of foundation are proposed. and the dynamic contact condition is also established. Based on energy conservation principle,an energy supplement equation is obtained using optimum model and network parallel computing technology. A dynamic compaction case is taken as an example to analyze with the proposed method. The variation law of foundation displacement with time and the dynamic contact stress under dynamic compaction is obtained,which offers an effective path to analyze consolidation mechanism of soil precisely and also demonstrates the speedup and efficiency of parallel computing.