一、引言 CCP(旋喷桩)方法被作为埋入管道在液化条件下的一种对策而提出。借助于CCP方法的特点,埋入管道能以任意的形式固定而避免隆起、沉降和土壤的横向流动。另一方面,这种方法有这种可能,即由波的传播引起的动应变将变得较大,因为埋入管道构成了这个结构系统。因此进行了实验和理论的分析。在CCP方法中,胶化的土壤被高压空气和水冲击,同时用 I. INTRODUCTION The CCP (jet grouting pile) method was proposed as a countermeasure for buried pipelines under liquefaction conditions. Thanks to the characteristics of the CCP method, buried pipes can be fixed in any form to avoid bulging, settlement and lateral flow of the soil. On the other hand, this method has the possibility that the dynamic strain caused by the wave propagation will become larger because the buried pipe constitutes this structural system. Therefore, experimental and theoretical analysis was performed. In the CCP method, the gelled soil is impacted by high pressure air and water while using