【摘要】 对预制桩的竖向承载性能进行计算研究 ,提出了一种分析预制桩竖向承载性能的新方法。将优化反分析理论与改进的弹性理论法相结合 ,所编制的预制桩轴向承载性能优化反分析计算程序 ,不仅可模拟计算预制桩静载试验的荷载沉降曲线 ,而且可根据静载试验实测的桩顶荷载沉降曲线反演分析计算出桩周土力学参数。对大量的静载试验资料进行优化反分析计算 ,并对所得到的土力学参数进行统计分析 ,得出一整套较能反映实际、实用可靠的土力学参数值 ,用于指导设计并模拟计算预制桩的竖向承载性能更多还原

【Abstract】 A new method is presented to analyze the vertical load bearing performances of prefab piles with optimization and back analysis techniques. In combination with optimization theory, back analysis method and a new improved elastic theory method, a program is developed not only to stimulate the load settlement curve( Q S curve) of static load testing, but also to analyze the soil mechanical parameters around the pile by using back analysis method with optimization techniques on the basis of measured load settlement information of static testing.This technique has been verified in large numbers of practical engineering with satisfactory results.更多还原