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（1 浙江大學(xué)建筑設(shè)計(jì)研究院，杭州 310027； 2 浙江大學(xué)建筑工程學(xué)院，杭州 310027）

［摘要］針對(duì)空間異形柱框架特點(diǎn)，運(yùn)用非線性有限元計(jì)算程序，對(duì)在不同方向水平荷載作用下異形柱框架結(jié)構(gòu)進(jìn)行推覆分析，研究不同軸壓比異形柱框架的破壞過(guò)程、承載力、延性、側(cè)向位移、扭轉(zhuǎn)、滯回性能及剛度退化等方面的抗震性能特點(diǎn)。結(jié)果顯示，軸壓比的增大對(duì)抗震性能有很大影響，尤其會(huì)降低框架的延性。

［關(guān)鍵詞］異形柱；框架；推覆分析；軸壓比；抗震性能

Influence to aseismic performance of 3D-frame with special-shaped columns by axial compression ratio

Cao Yunzhong¹，Gan Gang¹，Tang Jinchun²（1 Architectural Design and Research Institute of Zhejiang University, Hangzhou 310027, China；2 College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China）

Abstract:According to the features of 3D-frame with special-shaped columns, the calculation program for the structure′s nonlinear finite analysis is used to study the aseismic performance of the 3D-frame with special-shaped columns such as failure process, bearing capacity, ductility, lateral displacement, torsion, hysteretic performance and stiffness degeneracy. The influence regularity on aseismic performance of the 3D-frame by axial compression ratio is discovered after the 3D-frame was analyzed by pushover under horizontal loading with various directions. Results show, the increment of axial compression ratio affects the aseismic performance of the frame obviously, especially for reducing the ductility of the frame.

Keywords:special-shaped column；frame；pushover；axial compression ratio；aseismic performance

作者簡(jiǎn)介：曹云中，博士，Email:yunzhong6666@163.com。

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