THEORETICAL ANALYSIS AND APPLICATIONS OF THE INCREMENTAL METHOD FOR DESIGN OF DEEP EXCAVATION SUPPORT

The incremental method, at present, is widely used in the process-oriented design of a deep excavation engineering of high-rise building structures. However, there are few studies to discuss the fundamental theoretical basis of this methodology in more general sense.The computational results helpful for design should be dependent on excavation process.The incremental method which can take the excavation process into account is different from that of the conventional design method in which the excavation process is overlooked.Therefore the natures of mathematics and mechanics of the incremental method as well as its effect on engineering design are examined. Meanwhile, the rationality and reasonability of the incremental method are demonstrated through numerical analyses of a specific example.