Simulation and monitoring of whole erection process for the Yujiapu Railway Station building.

Construction simulation for a shell-shaped single-layer lattice shell located in Yujiapu was conducted based on ANSYS finite element software. According to actual construction process and the element birth and death technology, the stress changing tendency of key components was obtained and lifting process was analyzed in detail. The monitoring scheme was made and conducted to ensure the safety in erection process for the boxed components which were subjected to large axial force, shear force, moment and torsion at the same time. The results derived by monitoring and simulation were compared. The changing course of bearing displacement was calculated by using nonlinear spring element to accurately simulate mechanical property of double bearing. Results show that displacement would occur at each support due to erection sequence and temperature variation, which should be avoided by taking measures. The stress of lifting point is large during integral lifting process and it almost vanishes after unloading. The simulation method was validated by the agreement between results obtained by monitoring and simulation. The stress and displacement of key components are in control and the construction scheme can satisfy the need of construction. [ABSTRACT FROM AUTHOR]