Research On Key Link Of The Seismic Design Of Transfinite High-rise Structure

Transfinite high-rise building in our national life,is nearly 10 years of things,especially with the further development and upgrade of urbanization,a second tier cities emerged a large number of high-rise and oversize buildings.Compared to the rapid development of high-rise,engineering theory to guide and standardize is lagging behind the development of,the engineering and technical personnel in the face of every transfinite high-rise building project,the the process of design and construction as a subject to study.In this paper,through the practical engineering case analysis of high-rise seismic design process of several key points,its importance and rales in the design of this type of structural analysis,to future overrun structural seismic design and provides reference material.In this paper,the relevant theoretical basis,the standard and the domestic development status of the relevant theoretical basis,and the domestic development of the data collection work.During the design phase of the project,summarized the definition of high-rise,and transfinite class structure face,clear the main content of this paper is the key links of the high-rise structure seismic design are as follows:how to high-rise transfinite decision;high-rise earthquake and other related parameters selection principle and analysis method;high-rise how to determine performance of target and the procedure of performance design.Through the study of engineering examples and draws the following conclusion:the main principle of transfinite structure to determine the height of principles and rules of principle,in the design should be in the premise of using the creative core function and solution of the building to meet,reduce the irregular structure;seismic design parameter selection is to determine the target response spectrum,the seismic wave response site safety evaluation report provides spectrum and standard response spectrum for selection,selection of seismic influence as seismic input;according to the project’s architectural features,structure characteristics and construction unit of economic capacity to determine its performance trget,through the structure in small earthquake,earthquake,earthquake and elastic time history analysis with the elasto static analysis of the calculation,can not only test the reasonable overall program structure at the macro level,also can quantitatively determine the seismic component can meet the requirements of the performance objectives;and discusses how to find the weak link of the structure of the system,and take corresponding measures to strengthen.