Papers by Author: Yang Yang

Abstract: Tianjin tower is the landmark building of Tianjin, and is of out-of-codes super high-rise concrete filled steel tube (CFST)-steel reinforced concrete (SRC) hybrid structure. As to this type of architecture, the impact of creep on the concrete work construction cannot be ignored. Considering the complexity of creep calculation of the integral structure, the simplified creep calculation model will be adopted for the construction simulation in this paper. The comparison with the results of on-site construction monitor shows that the simplified model is reasonable and practical. Additionally the analysis on the impact of creep on CFST structure is made, providing theoretical and practical references for performance evaluation of the structure of Tianjin Tower and the selection and optimization of construction methods of Tianjin Tower.

Abstract: Tianjin Tower is the tallest building in North China. It is an out-of-code super high-rise building. Considering the special structure and safety factors during the construction, this paper describes the monitoring of the construction. The problems on numerical simulation model, creep calculation model and steel plate sheer wall welding during the construction monitoring have been discussed and corresponding solutions are given. Through the comparison and studies on the results of field monitoring, the solutions in this paper have provided practical advice on performance evaluation of the structure of Tianjin Tower and construction methods of Tianjin Tower, and are of certain significance in the reference for the construction monitoring of super high-rise buildings alike.

Abstract: In this paper, a practical application for a continues beam-type bridge, the Truckee river bridge, California, to test the validity of the improved DSC method in the identification of the bridge damage after severe loading such as that caused by an earthquake was discussed. Comparing the calculated stiffness from the improved DSC method with that from design data of the bridge based on the numerical simulation with different damage scenarios in consideration of measurement errors, the location and severity of the damage in the bridge can be accurately and reliably detected. The pushover and seismic damage assessment analysis shows that the improved DSC is valid and efficient for damage detection in highway bridges.