According to some data of static load tests of pile in Sian region, load-transfer function of the upper and lower segment of soil surrounding the pile are defined as the bilinear soft model and hard model respectively.

• 通过对西安地区的许多工程试桩资料的整理、分析和研究,将摩擦型桩桩周土上部土层和下部土层的荷载传递函数分别简化为双折线硬化模型和软化模型。