Safety Analysis of 'Hanging on Top Substructure and Supporting on Bottom Substructure' Construction for Beijing Television Center

摘要

"Hanging on the top substructure and supporting on the bottom substructure" is a new construction technology for high-rise steel structure. In order to keep the construction process in safety, this paper carries out the numerical simulation on the whole construction process of "hanging on the top substructure and supporting on the bottom substructure" (HTSB) by using the birth and death element technology of ANSYS for the super high-rise steel structure of Beijing Television (BTV) Center. Story by story loading and structural stiffness matrix step by step updating are considered. The detail calculations for the change of the structural stress during the construction process are completed. The results of calculation provide direct instruction for the realization of HTSB technology, and similar structure design and construction can take this as reference.