Method for determining longitudinal internal force of shield tunnel under load effect
A technology of shield tunneling and determination method, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of not considering the shear deformation of the tunnel, the inability to accurately describe the longitudinal structural characteristics of the tunnel, and the inability to accurately calculate the tunnel. Longitudinal internal forces, etc.
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[0060] A Shanghai subway tunnel was constructed using the shield method. During operation, it was affected by the surcharge above, and local settlement deformation occurred.
[0061] The first step is to obtain the buried soil information of the tunnel, the design information of the tunnel structure and the load information acting on the tunnel.
[0062] Obtain the buried soil information of the tunnel: The soil below the tunnel is obtained by drilling and soil sampling for particle grading test. The content of each particle group obtained from the experiment is: the content of fine sand accounts for 2%, the content of silt particles accounts for 70%, and the content of sticky particles accounts for 2%. 28%, referring to my country's "Soil Classification Standard (GBJ145-90)", it can be determined that the soil taken is silty clay.
[0063] Obtain the tunnel structure design information: the tunnel length is 300m, the tunnel outer diameter is 6.2m, the tunnel inner diameter is ...
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