Seismic Analysis Of High-rise Building With Corner-overlap Plane

With the need of diversified architectural features as well as urban construction andlandscape, an increasing number of high-rise buildings with irregular shape go up; andaccordingly, set the trend of high-rise buildings, in which high-rise buildings withcorner-overlapped plane is in common usage. However, the national building code has nodetailed provisions for this form of buildings.This paper specifies in the following aspects:1. Analyze the elements that affect the anti-seismic performance of high-rise buildings withcorner-overlapped plane; and explore the overlapping area ratio, size, stiffness and masseccentricity in reaction to earthquakes. By sorting out the analytic results, conclude theelements that affect the seismic performance.2. High-rise buildings with corner-overlapped plane are generally accompanied by a slab thatis weakly connected. Through the analysis to slab stress, reinforcing measures of the slabwill be presented.3. Using Response Spectrum Method and Time History method, conduct elastic analyses tohigh-rise buildings with corner-overlapped structure in specific projects, so as to applytheory into practice.4. Create the finite element model to carry on the Pushover analysis of high-rise buildingswith corner-overlapped plane in rare earthquakes; and from which, get the performancepoint of the structural, also the failure mechanism, the appearance order of plastic hingesand the Pushover correlation curve. Hence, reveal the actual yield of high-rise buildingswith corner-overlapped plane in rare earthquakes, and identify the weak parts of thestructural system in reaction to earthquakes.Through analysis, it can be concluded that overlapping area ratio and mass eccentricityare the most prominent factors that influence the torsional effect of the structure. Hence, in practical design, seismic measures should be strengthened in vertical members within theoverlapping area, especially the bottom of the shear wall.