The Kriging Overlapping Method of Numerical Simulation for Complex Models

With the rapid development of urban construction and the traffic congestion problems arise, underground engineering has developing rapidly throughout the country. The form of underground engineering is also more and more diverse. Numerical simulation method has become increasingly widely used in geotechnical engineering. However, when there are multiple excavation areas or channels and even intersections in a model, it will cause great inconvenience for modeling and calculation. To solve the modeling and calculation problem of complex models, Kriging interpolation method is improved to be suitable for geotechnical engineering. Kriging overlapping method of numerical simulation for complex models means that model is divided into a global model and a local model. Using Kriging interpolation method, the displacement of local model is lead to the global model as initial displacement field. And then further excavation for global model is carried out to get the final displacement field. Compared the results of numerical simulation and monitoring data, the results show that Kriging can consider spatial structure characteristics of the displacement field in underground engineering, and it has high reliability. As expected, the results of numerical simulation and measurement come to an agreement, which confirming the feasibility of Kriging overlapping method.