Research on structural design and key problems of frame-double core tube structure of Publishing Building
Publishing Building is a frame-double core tube structure system,and YJK and ETABS software were used to carry out overall calculation and comparison analysis of the main structure.In order to meet the building function and lead to the local transformation of the structure,three solutions were proposed,and the mechanical properties of the three-story frame in the transformation area were analyzed by the finite element software ABAQUS.The results show that under the action of wind load or earthquake,the main structure not only has good seismic performance,but also can meet the better economy.The local conversion finally adopts the inclined column conversion scheme.Under the action of the vertical load,the force of inclined column conversion is more uniform,reducing the stress concentration phenomenon in the structural node area.Under the combined action of vertical load and horizontal load,due to the supporting effect of inclined column on frame pillar,the compressive stress area of transfer structure is transferred from the connection between frame pillar and horizontal beam to the connection between inclined column and frame pillar,which makes the integrity more stable and provides reference for the selection and decision of project structure design scheme.
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