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（1 北京市建筑設(shè)計(jì)研究院有限公司，北京 100045; 2 悉地國(guó)際設(shè)計(jì)顧問(wèn)（深圳）有限公司，深圳 518057）

［摘要］基于ABAQUS軟件對(duì)某超高層結(jié)構(gòu)在長(zhǎng)周期地震波作用下的連續(xù)倒塌數(shù)值模擬方法進(jìn)行研究。采用纖維梁?jiǎn)卧M框架梁和框架柱，采用殼單元模擬鋼筋混凝土剪力墻和樓板?；谧映绦?qū)崿F(xiàn)梁?jiǎn)卧牧戏e分點(diǎn)材料的失效用于模擬單元生死，基于混凝土彈塑性損傷本構(gòu)近似模擬鋼筋混凝土剪力墻與樓板的剛度削弱及失效，并采用單元接觸考慮倒塌過(guò)程中單元之間的碰撞和結(jié)構(gòu)碎片堆積情況。以某實(shí)際超高層結(jié)構(gòu)為例，分析了結(jié)構(gòu)的動(dòng)力特性，并對(duì)該超高層結(jié)構(gòu)在長(zhǎng)周期地震波作用下的破壞模式和倒塌過(guò)程進(jìn)行了模擬，可為超高層結(jié)構(gòu)地震破壞機(jī)理和抗震設(shè)計(jì)研究提供參考。

［關(guān)鍵詞］超高層結(jié)構(gòu); 連續(xù)倒塌; 長(zhǎng)周期地震波; 數(shù)值模擬

中圖分類號(hào)：TU972.9      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2014)18-0054-05

Progressive-collapse numerical simulation of super high-rise structure subjected to long period ground motion

Ge Dongdong1, Li Wenfeng1, Zhang Junbing2, Miao Qisong1

 (1 Beijing Institute of Architectural Design, Beijing 100045, China; 2 China Construction Design International (Shenzhen), Shenzhen 518057, China)

Abstract: The progressive-collapse numerical simulation method of a super high-rise structure subjected to long period ground motion was studied based on ABAQUS. Frame beams and columns were modeled by fiber beam elements, while reinforced concrete shear walls and slabs were simulated by shell elements. Element death and birth were simulated by the failure of integral point materials of beam element materials based on subroutine. Stiffness degradation and failure of reinforced concrete shear walls and slabs were approximately simulated through the concrete damaged plasticity model. Element contact was also considered to simulate collision and structure fragments accumulation in collapse. Taking a super high-rise structure as an example, the dynamic characteristics were analyzed. Failure mode and progressive-collapse process of the structure subjected to long period ground motion were simulated. The proposed method can provide reference for seismic damage mechanism study and seismic design of super high-rise building.

Keywords: super high-rise structure; progressive-collapse; long period ground motion; numerical simulation

作者簡(jiǎn)介：閤東東，博士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：gddhust@gmail.com。

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