The assembled underground stations of Changchun Railway Line 2 use a series of closed cavity thin-walled components to reduce the structural weight. As for the hollow component, the shear lag effect is essential for the safety of the structure. Thus the numerical simulation is used to analyze the normal stress of the component, which contains a simple straight model and an actual station model. The results show that the shear lag effect occurs in the intersection of flange and rib of the component, and the maximum amplification factor of stress is 1.02 which should be considered for relevant design.
 

Underground Structure