Cornice To The Whole Structure Performance Analysis

China building is a kind of roof design art. In recent years, with the development of social economy, the building functional requirements and aesthetic view change. Beautiful and practical, innovative design of the high-rise building structure such as bamboo shoots after a spring rain emerge in large numbers appear in front of people. In the city to add the beautiful scenery at the same time, but also has brought many problems to the structural design analysis.Gansu Jingchuan steel structure antique tower using steel braced frame system.Layers of adduction, along the vertical irregular structure. The eaves overhanging larger size, more than standard limit. For large cantilever structure under vertical seismic load, wind load, often become the control load of the whole structure.This paper takes Gansu Jingchuan Stupa as the research background, by using software ETABS and SATWE were based on the structure of solid modeling, mainly completed the following research work:1、On the imitation of Guta numerical simulation analysis, through the calculation of the overall structure in the wind load and the seismic deformation to verification of the safety of antique tower. 2、Using three different length overhangs model, respectively on the structure of wind load and earthquake action single condition analysis, through the analysis of the results of the comparison, determine the cornice length effect on structural performance.3、Using four different angles cornice model, respectively on the structure of wind load and earthquake action single condition analysis, through the analysis of the results of the comparison, determine the cornice angle effect on structural performance.4、Selection the typical cornice of structure, through three kinds of seismic waves, to analysis the vertical seismic acceleration distribution.5、In computational fluid dynamics as the theoretical basis, application of large-scale commercial CFD simulation software package Fluent to antique tower for numerical simulation of wind tunnel experiment.Based on the structure surface division, the cornice of the wind load shape coefficient distribution law, for future reference of the similar engineering.