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李鵬1， 葉 飛2， 戚承志1， 陳金科2
(1北京建筑工程學(xué)院，北京100044;2北京城建設(shè)計研究總院有限責(zé)任公司，北京100037)[摘要] 本文簡要描述了建筑結(jié)構(gòu)彈塑性分析方法的基本原理，結(jié)合ABAQUS有限元程序，重點介紹了動力彈塑
性分析法在前處理和計算過程中所涉及的假定，對包括理論假定、單元選取、材料本構(gòu)關(guān)系的選取、阻尼指定、地震波選取、數(shù)值解法的優(yōu)劣及彈塑性時程分析結(jié)果的初步判斷方法進行了分析和探討，并運用于實際超限工程，在性能化設(shè)計目標的前提下，彈塑性分析結(jié)果很好地反映了結(jié)構(gòu)的塑性損傷變化情況，為后續(xù)的結(jié)構(gòu)設(shè)計提供了依據(jù)。
[關(guān)鍵詞] 彈塑性；纖維模型；復(fù)雜結(jié)構(gòu)；性能化設(shè)計
中圖分類號：TU311.4 文獻標識碼：A 文章編號：1002 -848X( 2012) S2 -0161-07Engineering application and principle of elasto-plastic analysis method
Li Pengl, Ye Fej2, Qi Chengzhil, Chen Jinke2
(1 Beijing Uruversity Civil Engineering and Arclutecture, Beijing 100044, China; 2 Beijing Urban Engineering Design & Research Institute Co., Ltd., Beijing 100037, China)Abstract: The principle of elasto-plastic analysis method is briefly described, with combination of ABAQUS, the related assumptions in the pre-processing and calculation of the dynanuc elasto-plastic analysis are introduced emphatically, the theoretical hypothesis, selection of the elements and the material constitutive relationship, the selection of the earthquake wave, the determination of damping, the advantages and disadvantages of numerical methods and the preliminary judging methods on the results of elasto-plastic time history analysis are analyzed and studied. On the basis of performance-based design method, a limit project was analyzed using the elasto-plastic method, the results reflect the plastic damage changes in the structure, and provide a basis for the subsequent structural design.
Keywords: elasto-plastic; fiber model; complex structures; performance-based design
