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［摘要］結(jié)合多個(gè)實(shí)際高層建筑結(jié)構(gòu)的彈塑性分析結(jié)果，初步總結(jié)并分析了強(qiáng)烈地震作用下結(jié)構(gòu)彈塑性響應(yīng)及構(gòu)件破壞模式的規(guī)律與內(nèi)在原因，得出如下一些結(jié)論：1）可以采用樓層屈服強(qiáng)度系數(shù)作為初步判斷框架核心筒結(jié)構(gòu)抗震薄弱部位的指標(biāo)；2）在框架-核心筒結(jié)構(gòu)的伸臂桁架中采用防屈曲支撐作為其斜腹桿構(gòu)件，有利于防止斜腹桿的受壓屈曲破壞并保障核心筒與外框架的協(xié)同工作，是實(shí)現(xiàn)有限剛度加強(qiáng)層與延性破壞機(jī)制的一種有效途徑；3）對(duì)于高寬比較大的剪力墻結(jié)構(gòu)，宜設(shè)置構(gòu)件配筋過渡樓層以避免因結(jié)構(gòu)配筋指標(biāo)突然變小而造成的抗震薄弱部位；4）強(qiáng)震作用下，核心筒內(nèi)的電梯門廳樓板實(shí)際起到了類似連梁的作用，提高其與墻體連接部位的配筋構(gòu)造、保證其在往復(fù)荷載下的耗能能力有利于結(jié)構(gòu)抗震。
［關(guān)鍵詞］彈塑性分析; 高層建筑; 抗震設(shè)計(jì); 抗震性能
中圖分類號(hào)：TU973+ .2 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)：1002-848X(2011)11-0041-06
Edifications on the aseismic design of high-rise building from structure elastoplastic analysis
Xu Ziguo, Xiao Congzhen, Ren Chongcui（CABR Technology Co., Ltd., China Academy of Building Research, Beijing 100013, China）
Abstract: This article summarized the discipline of the nonlinear responses and damage modes of structure and investigated the immanent causes based on structural elastoplastic analysis of several real high-rise projects. And some beneficial conclusions for high-rise structural aseismic design were proposed: The story yield strength factor can also be taken as the index of weak story for frame-core wall structure. Buckling restrained brace can be substitute for the common brace as the web member in outriggers of frame-core wall structure to prevent buckling failure due to compression and ensure the co-working between core and frame. It is also one effective way of realizing the limit stiffness strengthening story and the ductile failure mechanism. The reinforcement transition stories should be applied to shear wall structure with high aspect ratio for preventing the seismic weak story caused by reinforcement sudden reduction. The slab of elevator vestibule serves as coupling beam during intensive earthquake, and increasing the reinforcement at the connection region of slab and wall and improving the hysteretic capacity would be good to seismic performance of structure.
Keywords: elastoplastic analysis; high-rise building; aseismic design; seismic performance
作者簡介：徐自國（1977-）,男，副研究員，研究方向：超高層結(jié)構(gòu)，Email:xuziguo@cabrtech.com。
結(jié)構(gòu)彈塑性分析對(duì)我國高層建筑抗震設(shè)計(jì)的啟示
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