引言地震时桩经受竖向和侧向两种位移。在地震反应分析中这两种位移通常分别加以模拟。本文只考虑侧向位移。在地震荷载作用下,支配桩的侧向反应的最重要因素是土和桩之间的相互作用。图1为相互作用模型的简图。桩用适当的离散 Introduction The pile undergoes vertical and lateral displacements during an earthquake. The two displacements are usually simulated separately in the seismic response analysis. This article only considers lateral displacement. Under earthquake loading, the most important factor that dictates the lateral response of a pile is the interaction between the soil and the pile. Figure 1 shows a simplified diagram of the interaction model. Piles with proper dispersion