典型文献
Range of applicability of real mode superposition approximation method for seismic response calculation of non-classically damped industrial buildings
文献摘要：
An industrial building is a non-classically damped system due to the different damping properties of the primary structure and equipment.The objective of this paper is to quantify the range of applicability of the real model superposition approximation method to the seismic response calculation of industrial buildings.The analysis using lumped mass-and-shear spring models indicates that for the equipment-to-structure frequency ratios γf＞1.1 or γf＜0.9,the non-classical damping effect is limited,and the real mode superposition approximation method provides accurate estimates.For 0.9＜γf＜1.1,the system may have a pair of closely spaced frequency modes,and the non-zero off-diagonal damping terms have a non-negligible effect on the damping ratios and mode shape vectors of these modes.For 0.9＜γf＜1.1 and the equipment-to-structure mass ratios γm＜0.07,the real mode superposition approximation method results in large errors,while the approximation method can provide an accurate estimation for 0.9＜γf＜1.1 and γm＞0.07.Furthermore,extensive parametric analyses are conducted,where both steel structures and reinforced concrete structures with equipment with various damping ratios are considered.Finally,the finite element analysis of a five-story industrial building is adopted to validate the proposed range of applicability.
文献关键词：
中图分类号：
作者姓名：
Li Xiaodong;Sun Hongyang;Ji Xiaodong;Sanjukta Chakraborty;Wang Lijun
作者机构：
Department of Civil Engineering,Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Tsinghua University,Beijing 100084,China;Central Research Institute of Building and Construction Co.Ltd,Beijing 100088,China;Department of Civil Engineering,Indian Institute of Technology Palakkad,Kerala 678557,India;Huachengboyuan Engineering Technology Group,Beijing 100052,China
文献出处：
引用格式：
[1]Li Xiaodong;Sun Hongyang;Ji Xiaodong;Sanjukta Chakraborty;Wang Lijun-.Range of applicability of real mode superposition approximation method for seismic response calculation of non-classically damped industrial buildings)[J].地震工程与工程振动（英文版）,2022(02):475-488
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B类：
Range,applicability,real,superposition,approximation,method,seismic,response,calculation,classically,damped,industrial,buildings,An,system,due,different,damping,properties,primary,equipment,objective,this,paper,quantify,range,analysis,using,lumped,mass,shear,spring,models,indicates,that,frequency,ratios,effect,limited,provides,accurate,estimates,For,may,have,pair,closely,spaced,modes,zero,off,diagonal,terms,negligible,shape,vectors,these,results,large,errors,while,can,estimation,Furthermore,extensive,parametric,analyses,are,conducted,where,both,steel,structures,reinforced,concrete,various,considered,Finally,finite,element,five,story,adopted,validate,proposed
AB值：
0.487911
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