Influence Of Vertical Earthquake On The Seismic Performance Of Truss Structure With High Conversion

In the current Chinese code for seismic design of buildings, the provisions of the " The large-span structure, long cantilever structure, chimney and similar high-rise structure in the area of8degree and9degree earthquake intensity,9degrees of high-rise buildings in the area of9degree earthquake intensity, should consider the vertical earthquake action." But large number of damage phenomena and records show that, in some earthquakes, the damages in the building structures by the vertical earthquake were much more serious than by the horizontal earthquake. So, more and more people pay attention to the influence of the vertical earthquake on the building structures. This paper establishes the calculation model with high conversion truss structure by using the software SAP2000, Selects the El-centro wave and the Taft wave from the earthquake acceleration records, calculates and analyzes the model by using the time-history analysis program, summarizes that under the common action of the horizontal and the vertical earthquake, the influence of the vertical earthquake on the seismic performance with high conversion truss structures. This paper briefly analyzes that the seismic performance of the structure in elastic-plastic phase under the vertical earthquake by using the static elastoplastic analysis method, determines the weak parts of the structure according to the plastic hinge distribution and the development of the state. Through the results of this study, hoping to provide help for the designing and seismic analysis of similar structures.