Performance-based Seismic Design Of A Exceeding Code Limited High Rise Building

The purpose of this paper is to rise through the construction of a project overrun seismic design, performance-based seismic design method applied to the actual overrun projects. Structures were carried out by small earthquakes, the earthquake, the earthquake seismic calculation, the calculation results are analyzed and demonstrated, to grasp the extent of structural deformation and damage, targeted seismic take effective measures to ensure that the seismic performance reached national seismic code provisions of the "minor earthquake, moderate earthquake repair, earthquake does not fall", the seismic fortification goals.In this thesis, from the following aspects:This project is a layer of 59 a total height of 259.8 m office building, the structure of the aspect ratio of 7.7, the natural vibration period of the first three order of 6.56 s, 6.14 s, 4.62 s, the structure of the maximum torsional displacement ratio 1.12, belong to the super class B highly reinforced concrete frame- core tube structure, is a highly overrun, there are local floor discontinuity and local cross layer column.1. This paper expounds the basic principle of seismic design method based on performance and basic steps. Obtained based on the performance of the seismic design is suitable for use in transfinite building structure design.2. By applying performance based seismic design method, USES the establishment of the China construction science research institute SATWE software for small earthquakes elastic analysis, and using Midas building housing structure analysis and design software, this paper compares and analyzes the structure of the cycle, displacement, just compare weight ratio of the overall calculation results and analysis, ensure the reliability of the mechanical analysis results. According to "code for seismic design of buildings [1]" in the earthquake repairable "principle, through the structure in the earthquake under the action of review on the bearing capacity of the main component to resist lateral force, determine the set of performance indicators; The seismic fortification target of "big to fail", through building in strong earthquakes is prepared elastic-plastic analysis, determine the set of performance indicators.3. According to the analysis result and the key and important component of strengthening properly, it is concluded that the transfinite project can meet the specification of the conclusion of seismic fortification goal. Structure is feasible and safe.