地震作用下框架结构三维弹塑性反应分析
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摘要
利用弹塑性有限元理论和ADINA有限元结构分析软件,引入三维梁单元和壳单元,编制了框架结构空间弹塑性地震反应时程分析程序,并建立框架结构空间三维杆系模型,对地震作用下的框架结构进行了弹塑性反应分析,得到了结构的自振周期和顶层水平位移时程曲线。通过振型分析,模拟结果符合建筑物的实际震害,验证了程序的可靠性,表明采用ADINA建立有限元模型进行弹塑性地震反应分析是可行的,并具有较高的精度,为进行建筑结构弹塑性地震反应分析提供了新的手段。
Using elastic-plastic finite element analysis theory for reinforced concrete frame structure and ADINA finite element structure analysis software, the time analysis programs for the frame-structure's spatial elastic-plastic reaction with three-dimensional beam and shell unit, is programsd and spatial three-dimensional truss system model is established. Based on the analysis of the elastic-plastic reaction for the frame structure in earthquake action, the self-excited vibration's period and horizontal displacement-time curve are got up. Through the analysis the mode of vibration, the result of simulation accords with real shake-damage of the building is finded that, which verifies reliability of program and shows the feasibility and precision of using ADINA finite element program to analyse the elastic-plastic reaction of earthquake. A new reference basis and a new study method for the analysis of the earthquake reaction of building are offered.
Using elastic-plastic finite element analysis theory for reinforced concrete frame structure and ADINA finite element structure analysis software, the time analysis programs for the frame-structure's spatial elastic-plastic reaction with three-dimensional beam and shell unit, is programsd and spatial three-dimensional truss system model is established. Based on the analysis of the elastic-plastic reaction for the frame structure in earthquake action, the self-excited vibration's period and horizontal displacement-time curve are got up. Through the analysis the mode of vibration, the result of simulation accords with real shake-damage of the building is finded that, which verifies reliability of program and shows the feasibility and precision of using ADINA finite element program to analyse the elastic-plastic reaction of earthquake. A new reference basis and a new study method for the analysis of the earthquake reaction of building are offered.
引文
1 刘伯权.建筑结构抗震设计.北京:中国建材工业出版社,1996
2 王光远.结构动力学.北京:科学出版社,1985
3 沈聚敏,周锡元,高小旺,等.抗震工程学.北京:中国建筑工业出版社,2000
4 陈剑杰.钢筋混凝土结构抗内爆性能的有限元优化设计分析.岩石力学与工程学报,2002;(4):554-557
5 吕西林,金国芳.钢筋混凝土结构非线性有限元理论与应用.上海:同济大学出版社,1997
6 陈 波,吕西林,李培振,等.用ANSYS模拟结构———地基动力相互作用振动台试验的建模方法.地震工程与工程振动,2002;22(1):126—131
7 包世华.新编高层建筑结构.北京:中国水利水电出版社,2001
8 GBJ1189.建筑抗震设计规范.北京:中国建筑工业出版社,1989
2 王光远.结构动力学.北京:科学出版社,1985
3 沈聚敏,周锡元,高小旺,等.抗震工程学.北京:中国建筑工业出版社,2000
4 陈剑杰.钢筋混凝土结构抗内爆性能的有限元优化设计分析.岩石力学与工程学报,2002;(4):554-557
5 吕西林,金国芳.钢筋混凝土结构非线性有限元理论与应用.上海:同济大学出版社,1997
6 陈 波,吕西林,李培振,等.用ANSYS模拟结构———地基动力相互作用振动台试验的建模方法.地震工程与工程振动,2002;22(1):126—131
7 包世华.新编高层建筑结构.北京:中国水利水电出版社,2001
8 GBJ1189.建筑抗震设计规范.北京:中国建筑工业出版社,1989
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