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(1 湖南大學(xué)工程結(jié)構(gòu)損傷診斷湖南省重點實驗室， 長沙 410012；2 湖南大學(xué)土木工程學(xué)院， 長沙 410012)
［摘要］周邊加強框架是由抵抗全部地震作用的周邊框架和僅承擔(dān)重力荷載的承重框架組成，通過調(diào)整柱的截面尺寸來加強框架的抗震性能?；谥苓吋訌娍蚣艿脑O(shè)計概念，總結(jié)了國內(nèi)外周邊加強框架的研究現(xiàn)狀。模擬了多層鋼筋混凝土框架結(jié)構(gòu)的抗震試驗，驗證了采用SAP2000軟件建模分析的正確性。按中國規(guī)范設(shè)計普通框架結(jié)構(gòu)，然后以此為基礎(chǔ)設(shè)計周邊加強框架，分別建立了普通框架和周邊加強框架模型，采用時程分析法對比研究了兩框架在雙向地震作用下的抗震性能。結(jié)果表明：周邊加強框架的抗震性能可以滿足中國規(guī)范的抗震要求。周邊加強框架的層間位移角在多遇地震和罕遇地震作用下分別比普通框架的小4%和6%，周邊加強框架的抗震性能優(yōu)于普通框架的抗震性能。經(jīng)計算，周邊加強框架可以一定程度地節(jié)省結(jié)構(gòu)的工程造價。
［關(guān)鍵詞］鋼筋混凝土框架結(jié)構(gòu)；抗震設(shè)計思路；周邊加強框架；時程分析
中圖分類號：TU375 文獻標(biāo)識碼：A文章編號：1002-848X(2021)20-0020-08
Seismic design of perimeter strengthened frame
YI Weijian1,2, LI Wenjing2
(1 Hunan Provincial Key Lab on Diagnosis for Engineering Structures, Hunan University, Changsha 410012， China；2 Civil Engineering College, Hunan University, Changsha 410012， China)
Abstract: The perimeter strengthened frame is composed of the perimeter frame resisting all seismic actions and the gravity-only frame bearing only gravity load. The seismic performance of frame is strengthened by adjusting the section size of the column. Based on the design concept of perimeter strengthened frame, the current research status of perimeter strengthened frame at home and abroad was summarized. The seismic test of multi-layer reinforced concrete frame structure was simulated to verify the correctness of SAP2000 software modeling analysis. According to the Chinese standards, the common frame structure was designed, and then the perimeter strengthened frame was designed on this basis. The models of the common frame and the perimeter strengthened frame were established respectively. The time history analysis method was used to compare the seismic performance of the two frames under the two-way earthquake action. The results show that the seismic performance of the perimeter strengthened frame can meet the seismic requirements of Chinese standards. The story displacement angle of the perimeter strengthened frame is 4% and 6% smaller than that of the common frame under the action of frequent earthquake and rare earthquake, respectively. The seismic performance of the perimeter strengthened frame is better than that of the common frame. After calculation, the perimeter strengthened frame can save the engineering cost of the structure to a certain extent.
Keywords:reinforced concrete frame structure； seismic design methodology； perimeter strengthened frame； time history analysis
*國家自然科學(xué)基金資助（51878260）。
作者簡介：易偉建，博士，教授，博士生導(dǎo)師，Email: wjyi@hnu.edu.cn。
