Application of Entropy-Based Optimization Technique to Deep Foundation Excavations

In view of the characteristics of soft soil deep foundation excavations for the construction and geotechnical characteristics of the braced excavation, it is difficult to calculate theoretically accurately optimization analysis of bracing systems of the foundation excavation, so in the course of excavation on the construction of the information is particularly important. In this paper, the theory basis of the indexes system of the safety assessment was studied, including the establishing principles of the indexes system, the structure of the indexes system, the determining methods of the assessment indexes. Then, the every index´s overall sorting weight is determined, the comprehensive evaluation results are obtained to evaluate the degree of superiority and inferiority of bracing schemes measured by means of entropies, which are defined using Shannon´s informational entropy theory. An example application of the proposed methodology to the optimization of bracing systems is discussed.