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《Earthquake Resistant Engineering and Retrofitting》 2017-01
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Research on Energy Dissipation Design Method Based on The Load Path

Du Yong-feng;Zhang Wen-li;Huang Xiao-ning;Institute of Earthquake Protection and Disaster Mitigation,Lanzhou University of Technology;Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education,Lanzhou University of Technology;  
In consideration of the safety of structural elements,some suggestions for application of energy dissipation method,which is the optimal allocation method of energy dissipation braces based on the load path are put forward. All the element importance indexes of structural system are calculated. After assumed brace section parameters,and then energy dissipation braces are arranged in these locations where element importance indexes are maximal on each floor. The final brace parameters and amounts are derived after checking axial forces in most unfavorable conditions with consideration of seismic,the structure is analyzed by time-history analysis method. in this process,three different conditions which are divided by the earthquake fault distance are considered,including far-field ground motions,near-field ground motion with pulse and near-field ground motion without pulse. The analysis results show that this allocation method can provide an effective protection to the most important members in the structural load path. The energy dissipation braces can also work well in different earthquake intensities,meanwhile,the structural seismic response is well controlled.
【Fund】: 国家自然科学基金项目(51578274)
【CateGory Index】: TU352.11
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