- 摘 要
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（西安建筑科技大學(xué)土木工程學(xué)院鋼結(jié)構(gòu)科研團隊， 西安 710055）
［摘要］對一個單層單跨剪切屈服型高強鋼組合K型偏心支撐框架試件的滯回性能進行了低周往復(fù)循環(huán)試驗研究，并且建立了多個層數(shù)不同的高強鋼組合K型偏心支撐框架和Q345鋼K型偏心支撐框架有限元模型，對其滯回性能進行了非線性數(shù)值分析，對兩種結(jié)構(gòu)的承載力、強度退化、剛度退化、延性、耗能能力以及用鋼量進行了對比。研究表明：在滿足抗震要求的前提下，高強鋼組合K型偏心支撐框架的抗震性能良好，略差于相同設(shè)計條件下Q345鋼K型偏心支撐框架的，但是構(gòu)件截面較小，可以節(jié)省鋼材、降低造價，具有較高的經(jīng)濟效益。
［關(guān)鍵詞］高強鋼; 偏心支撐; 有限元; 滯回性能; 用鋼量
中圖分類號：TU391 文獻標(biāo)識碼：A 文章編號：1002-848X(2014)17-0007-08
Numerical analysis on the seismic performance of high strength steel composite K-type eccentrically braced frames
Lian Ming, Su Mingzhou, Guo Yan
(Research Team of Steel Structure, School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China)
Abstract:The hysteretic behavior of K-type eccentrically braced frames with high strength steel combination (K-HSS-EBFs) with one-bay and single story was studied under cyclic loading. The finite element models with different stories both of K-HSS-EBFs and Q345 K-EBFs were established to carry out the nonlinear numerical analyses for they hysteretic behavior. The bearing load capacity, stiffness degeneration, ductility, energy dissipation capacity and the usage of the steel of two structures were compared. The results indicate that the seismic performance of the K-HSS-EBFs is good,but slightly lower than that of Q345 K-EBFs with the same design conditions.The K-HSS-EBFs have smaller section of structural members and well meet the demands of the design codes and have highly economic efficiency by saving steel.
Keywords:high strength steel; eccentrical brace; finite element; hysteretic behavior; usage of steel
*國家自然科學(xué)基金項目(51178382)。
作者簡介：連鳴，博士研究生，Email: lianming0821@163.com。
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