Ultimate Bearing Capacity Analysis Of Single Layer Latticed Shell And Steel Bars Stress Monitoring Of Tianjin Grand Theatre Hanging Layer

The sand table showroom of Fushun planning exhibition hall uses single layer latticed shell. The overall stability takes the control of the dominant role in the analysis of single layer latticed shell calculation, it is necessary to carry out the ultimate bearing capacity analysis. The steel casting between the components is used in the project. The paper includes in the bearing capacity of steel casting. In this paper, it uses finite element program ANSYS and ABAQUS. The processes are drawn as follows: the modal analysis, the eigenvalue buckling analysis, the elastic ultimate bearing capacity analysis, the elastic-plastic ultimate bearing capacity analysis, the bearing capacity of steel casting analysis. Based on analyses, some main conclusions are drawn as follows. The results of ultimate bearing capacity analysis meet the design requirements of《Technical Specification for Space Frame Structure》( JGJ7-2010). The results of bearing capacity of steel casting in elastic analysis meet the design requirements of《Technical Specification for Application of Connections of Structural Steel Casting》( CECS235:2008).Tianjin Grand Theatre project, the complex structure, includes the steel roof truss, hanging layer and reinforced concrete shear walls etc. Steel bars of hanging layer are critical component for the force transmission. The floors of 15.9m and 20.9m hang in the steel roof truss bottom chords through the high-strength steel bars. In the process of concrete pouring roof and hanging layer and temporary support frame unloaded, to monitor the stress change of steel bars are very significant which could ensure the structural safety of the construction phase. In the paper, it uses finite element program ANSYS to establish the model of Tianjin Grand Theatre to simulate the concrete pouring process and temporary support frame unloaded. Identify significant changes in stress of steel bars as measuring point. The sensors arrangement for monitoring date collected in different conditions are in order to provide a basis to ensure construction safety.