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(華南理工大學(xué)亞熱帶建筑科學(xué)國家重點(diǎn)實(shí)驗(yàn)室, 廣州 510640)

摘要: 與基于承載力和基于位移的抗震設(shè)計(jì)方法相比,基于能量的抗震設(shè)計(jì)方法能夠更為全面地評估結(jié)構(gòu)抗震性能. 梳理并總結(jié)了國內(nèi)外相關(guān)文獻(xiàn),提出基于能量的性能指標(biāo),給出基于能量指標(biāo)的性能水準(zhǔn)量化和性能目標(biāo).同時(shí)結(jié)合現(xiàn)有的基于能量抗震設(shè)計(jì)方法,闡述了自復(fù)位阻尼器減震鋼框架基于能量指標(biāo)的抗震性能設(shè)計(jì)流程,在設(shè)計(jì)過程中結(jié)構(gòu)的滯回耗能由主結(jié)構(gòu)及阻尼器共同承擔(dān),從而減少地震對結(jié)構(gòu)的損傷. 最后以 9 層鋼框架進(jìn)行實(shí)例分析,驗(yàn)證了該設(shè)計(jì)流程的實(shí)用性. 算例結(jié)果表明,經(jīng)過基于能量的抗震性能設(shè)計(jì)后,被動(dòng)控制結(jié)構(gòu)相比于無控結(jié)構(gòu),主結(jié)構(gòu)的滯回耗能下降了 44. 8% ~ 61%,在被動(dòng)控制結(jié)構(gòu)中阻尼器承擔(dān)了 50. 5% ~ 68. 3% 的滯回耗能,可見附加阻尼器可有效降低主結(jié)構(gòu)的地震損傷.

關(guān)鍵詞: 基于能量抗震設(shè)計(jì); 被動(dòng)控制結(jié)構(gòu); 無控結(jié)構(gòu); 鋼框架; 消能減震技術(shù)

中圖分類號:TU352. 1 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2022)05-0055-08

DOI:10. 19701 / j. jzjg. 20210058

Energy-based seismic design method for energy-dissipation steel frame

MA Hongwei, YANG Jingyi, PAN Changqing

(State Key Laboratory of Subtropical Building Science,South China University of Technology, Guangzhou 510640, China)

Abstract: Energy-based seismic design method can evaluate structural seismic performance comprehensively cored withbearing capacity-based seismic design method and displacement-based seismic design method. Relevant domestic andforeign literature were sorted and summarizd, energy-based performance indicators was proposed, and performance levelsand performance targets based on energy index-based were gaven. At the same time, combined with the existingenergy-based seismic design method, the energy index-based seismic performance design process for the self-resettingdamper damping steel frame was described, and the hysteretic energy consumption of the structure was shared by the mainstructure and the damper to reduce earthquake damage to the structure in the design process. Finally, a 9-story steel framewas used for an example analysis to verify the practicability of the design process. The results of calculation example showthat after the energy-based seismic performance design, the hysteretic energy consumption of the main structure of thepassive controlled structure is reduced by 44. 8% ~ 61% compared with the uncontrolled structure. In the passive controlledstructure, the damper bears 50. 5% ~ 68. 3% of the hysteretic energy consumption. The additional damper can effectivelyreduce the earthquake damage of the main structure.

Keywords:energy-based seismic design; passive controlled structure; uncontrolled structure; steel frame; passive energydissipation technology

∗亞熱帶建筑科學(xué)國家重點(diǎn)實(shí)驗(yàn)室開放課題(2018ZB29) .

第一作者:馬宏偉,博士,副教授,主要從事鋼結(jié)構(gòu)和組合結(jié)構(gòu)研究,Email: hwma@ scut. edu. cn.

[引用本文] 馬宏偉,楊靜怡,潘長卿. 減震鋼框架基于能量的抗震設(shè)計(jì)方法[ J] . 建筑結(jié)構(gòu),2022,52( 5) :55-62.MA Hongwei,YANG Jingyi,PAN Changqing. Energy-based seismic design method for energy-dissipationsteel frame[ J] .Building Structure, 2022, 52(5) :55-62.