Two types of research methods for SPI, i. e. the theoretical analysis method and the experimental method, as well as their characteristics, applicability, and some related problems are reviewed.

• 介绍国内外桩土相互作用两大类研究方法－理论分析方法、试验方法各自的特点和适用范围，并分析了其各自存在的主要问题。