一、前言近二、三十年来,国外在地基加固技术方面发展十分迅速,老方法不断改进,新方方法不断涌现。日本是软土地基较多的国家之一,其加固技术十分发达,目前已形成了一个完整的加固体系。当前国外已有的方法多至百种以上。 I. INTRODUCTION In the past two or three decades, foreign countries have developed very rapidly in the field of ground reinforcement technology. The old methods have been continuously improved and new methods have emerged. Japan is one of the countries with a large number of soft soils. Its reinforcement technology is well developed and it has now formed a complete reinforcement system. There are currently more than 100 existing methods in foreign countries.