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（1 中衡設(shè)計(jì)集團(tuán)股份有限公司, 蘇州 215021； 2 江蘇省生態(tài)建筑與復(fù)雜結(jié)構(gòu)工程技術(shù)研究中心, 蘇州 215021）

［摘要］以某超限高層結(jié)構(gòu)為例，基于ABAQUS /Explicit方法對(duì)結(jié)構(gòu)在地震作用下連續(xù)倒塌的數(shù)值模擬方法進(jìn)行了研究，開發(fā)了適用于模擬倒塌分析中纖維梁?jiǎn)卧幕炷梁弯摻?鋼材材料子程序?；诨炷翐p傷模型實(shí)現(xiàn)模擬墻板殼單元的剛度退化，通過截面點(diǎn)“生死”模擬纖維梁?jiǎn)卧?，并同時(shí)考慮倒塌過程中單元的碰撞接觸。通過不同幅值的強(qiáng)震記錄對(duì)結(jié)構(gòu)進(jìn)行了連續(xù)倒塌模擬，從纖維梁?jiǎn)卧獞?yīng)力-應(yīng)變時(shí)程曲線、結(jié)構(gòu)整體響應(yīng)和倒塌過程等方面對(duì)結(jié)構(gòu)倒塌性能進(jìn)行了分析和評(píng)估，驗(yàn)證了模擬方法的合理性，為結(jié)構(gòu)進(jìn)一步的性能設(shè)計(jì)提供了依據(jù)，并為相關(guān)研究提供參考和思路。

［關(guān)鍵詞］數(shù)值模擬； 超限高層結(jié)構(gòu)； 連續(xù)倒塌

中圖分類號(hào)：TU352文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)01-0083-05

Application of ABAQUS in numerical simulation of structural progressive-collapse

Yang Lülei1,2, Gong Minfeng1,2, Zhu Xunyan1,2

(1 ARTS Group Co.,  Ltd.,  Suzhou 215021, China; 2 Jiangsu Engineering Institute of Ecological Building & Complex Structure, Suzhou 215021, China)

Abstract:Take one out-of-code high-rise building as the background, a numerical simulation method of structural progressive-collapse under earthquake was studied based on ABAQUS/Explicit method, subroutine on  material of concrete and steel which applied to fiber beam element in progressive-collapse simulation were developed. Based on the concrete damage model, the simulation of the stiffness degradation of the wall and floor  shell element was realized, the failure of the  fiber beam element was simulated through the section point “life and death” and at the same time the collision contact of the unit during the collapse process was also considered. The continuous collapse simulation of the structure was carried out by strong earthquake records with different amplitudes. The collapse performance of the fiber beam element was analyzed and evaluated from the aspects of stress-strain time history curve, overall structural response and collapse process. The rationality of the simulation method was analyzed and  verified, which provides a basis for further performance design of the structure and provides reference and ideas for related research.

Keywords:numerical simulation; out-of-code high-rise building; progressive-collapse

作者簡(jiǎn)介：楊律磊，碩士，高級(jí)工程師，Email: yanglvlei@artsgroup.cn。