Application and Inversion on Mechanical Parameters of Pipe Shed Support Layer for the Subway Passing Through the Existing Structure

The stability study is one of the hot spots of the urban transport design for the subway through the existing structure. The maximum settlement of the structure is regarded as the index of underneath the subway construction and design in this article, the mechanical parameters for pipe shed reinforcement layer on a subway station passing through the existing structure is back analyzed by utilizing the orthogonal experiment design methods, and the mechanical integration properties parameters which is close to engineering practice including elastic modulus, Poisson ratio, cohesion and internal friction angle for the material in the pipe shed reinforcement area are got. The steel pipe reasonable spacing range of advanced pipe shed support is got mainly on the basis of flexural rigidity. The stability analysis and evaluation for the construction of the new subway through the existing subway structure are carried out by utilizing the obtained optimum parameters.

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