| In recent years, tall buildings and super-tall buildings in the city are getting more common. In order to enhance the lateral stiffness of the structure, the strengthened stories are tend to be placed in these buildings. Setting the strengthened stories structure can effectively reduce the horizontal displacement of the building under the wind load and other horizontal loads, but setting the strengthened stories will cause a sudden change in the stiffness of the structure, and result in the internal force in the strengthened stories are affected by mutation, the weak story will be formed, therefore everyone has been focused on the strengthened stories.There are a plurality of ways to setting the strengthened stories, For researching the strengthened stories with outriggers,we do such work, as shown follows:1.It is based on the actual project, the paper uses PKPM software to model a practical project structure with the frame-core tubes, and researches the influence with different position of the strengthened stories on the performance of the structure, and draws some useful conclusions.2.On the basis of actual engineering and conclusions of model before,it has researched influence of the structure properties on the different modes of cantilever truss node connection, and it will provide help for designing truss node of outrigger.3.On the basis of actual engineering,it has researched influence of the structure properties on the different construction sequence of the strengthened stories with outrigger truss,the conclusion has certain guiding significance to the construction of actual engineering.It has researched effect of the modes of setting strengthened stories with outrigger truss on the structure properties of tall building with the frame-core tubes,it provide the reference to tall building with the frame-core tubes for setting the strengthened story,designing and construction reasonable. |
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