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（中國建筑股份有限公司技術中心，北京 101300）

[摘要]  本文通過有限元軟件ABAQUS提供的VUMAT用戶子程序功能，針對纖維梁單元的混凝土和鋼筋單軸材料本構(gòu)關系模型進行了二次開發(fā)；并結(jié)合清華大學公開的兩根鋼筋混凝土獨立柱和一榀鋼筋混凝土框架在往復荷載作用下的推覆試驗數(shù)據(jù)，建立了有限元模型，通過有限元分析和試驗結(jié)果的對比，驗證了本文開發(fā)應用的本構(gòu)模型和分析方法在結(jié)構(gòu)彈塑性分析應用中的精確性。

[關鍵詞]  混凝土;塑性損傷;本構(gòu)關系;有限元;彈塑性分析

中圖分類號：TU311.41             文獻標識碼：A          文章編號：1002-848X(2013)S1-1171-05

作者簡介：劉康，博士，工程師，Email:liukang@cscec.com。盧海陸，碩士，Email:luhailu@cscec.com。

Development and application of plastic-damage model for concrete in elastic-plastic analysis of structures

Liu Kang,      Lu Hailu

(China State Construction Engineering Corp. Ltd. Technical Center, Beijing 101300, China)

Abstract: Using the subprogram VUMAT provided by ABAQUS, the author developed a user-defined material subroutine for concrete and steel based on fiber beam elements. FE models for numerical simulation of two single RC columns and one RC frame structure under cyclical pull-down loading conducted at Tsinghua University were developed in this paper. Comparisons between FEM results and test data indicated that constitutive models and the analysis method applied in this paper can possess good accuracy in elastic-plastic analysis of structures.

Keywords: concrete; plastic-damage; constitutive relation; elastic-plastic analysis