Advanced Modeling in Civil Engineering
Comparative analysis of concrete cover of underground structures with Winkler spring frame methods and continuous environment method
Document Type : Original Article
Authors
1 Associate Professor, Department of Civil Engineering, Imam Hossein (AS) University, Tehran, Iran.
2 Master's student, Department of Civil Engineering, Imam Hossein (AS) University, Tehran, Iran.
Abstract
The most appropriate method for analyzing the concrete cover of tunnels and underground structures is to use the continuous environment method. Appropriate software for this method simulates the concrete cover and its follower environment together. However, structural engineers often use the Winkler frame and spring method to analyze the concrete cover of tunnels. In this method, the concrete cover is modeled with Winkler springs using frame elements and the effect of the surrounding environment. Despite the use of the Winkler frame and spring method, the results are not completely clear compared to the continuous environment methods.Accordingly, in the present study, the results of the analysis of concrete cover of tunnels under the effect of static loads and dynamic loads caused by explosion are compared with these two methods.PLAXIS software is used for continuous environment analysis and SAP2000 software is used for analysis by Winkler frame and spring method. The results show good accuracy of the approximate method of Winkler frame and spring, and it can be seen that the answers obtained by the two methods are close to each other.
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