Research On The Seismic Behavior Of Large Span Asymmetric Double-tower-connected Structure

With the development of economy and acceleration of urbanization, high-rise buildings become increasingly popular. In order to meet the requirements by building large spaces and city landmarks, connected structures are more and more popular among architects in recent years since the shape these structures can be combined on the basis of the traditional architecture. In this situation, the design and construction become easier and, on the other hand, buildings become more beautiful. Although connected structures developed from traditional architectures in terms of their forms, the addition of the connector, especially the biaxially asymmetric structure of this form in this engineering, makes the overall force more complicated and the influence between buildings larger. It is thus necessary that whether connector exists or not and the influence of the connection on seismic behavior..The main work presented in this paper is listed as follows:1. The model built in MIDAS / Gen was completed and was compared with the original model to verify themodel proposed by the author. Meanwhile, six extra studies were carried out, and the dynamic characteristics of each study was analyzed. The analytical results indicated that the existence of connection body and changing the way of connection had little influence on dynamic characteristics of structure.2. The elastic behavior was analyzed using modal response spectrum method. The influences of the arrangement of connector and the connected forms on elastic seismic performance in terms of interlaminar shear, lateral and drift angle were analyzed. The analytical results indicated that arranging connection body could improve overall stiffness along the connecting direction to a great extent and thus decrease the lateral structure movements, especially the lateral displacement at weak link.3. The elastic-plastic behavior was analyzed using pushover analysis. Two load distribution patterns with a total of eight kinds of working conditions were selected. The influence of connector arrangement and the connected forms on structural elastoplastic seismic behavior was analyzed in terms of floor shear, displacement and plastic hinges floor three aspects. The analytical results indicated that the results of hinge and fixed condition were similar. Additionally, the fixed condition of connection generated more shear hinge between shear walls of different floors, whereas the weak connection form could reduce the generation of plastic hinges.