1　前　　言 进入 90年代以来 ,随着我国经济实力的不断增强 ,许多城市在密集的楼群间兴建了大量的高层建筑 ,随之而来的高层建筑深基坑支护问题成为了我国岩土工程界人士广泛重视的课题 ,目前已经探索出许多适用于不同地区和不同开挖深度的新方法、新工艺 ,并且对各类支护结? 1 Introduction Since the 1990s, with the continuous improvement of China’s economic strength, many cities have built a large number of high-rise buildings among dense buildings and the supporting problems of deep foundation pit in high-rise buildings have become the problems of geotechnical engineering At present, many new methods and techniques applied to different regions and different excavation depths have been explored, and various types of support knots have been explored.