结构工程师
結構工程師
결구공정사
STRUCTURAL ENGINEERS
2014年
3期
56-63
,共8页
钢筋混凝土柱%ABAQUS%OpenSEES%非线性分析%滞回曲线
鋼觔混凝土柱%ABAQUS%OpenSEES%非線性分析%滯迴麯線
강근혼응토주%ABAQUS%OpenSEES%비선성분석%체회곡선
RC column%ABAQUS%OpenSEES%nonlinear analysis%hysteretic curve
分别应用有限元分析软件 ABAQUS 和 OpenSEES 对 Kawashima Earthquake Engineering Labora-tory 数据库中的一根钢筋混凝土柱在反复荷载作用下力-位移的滞回曲线进行了数值模拟研究。ABAQUS 分析时采用分离式建模，混凝土采用实体单元，钢筋采用桁架单元，混凝土的本构关系采用混凝土损伤塑性模型，其中损伤因子采用基于能量损伤原理进行计算，钢筋本构关系采用一种再加载刚度按 Clough 本构退化的随动硬化单轴本构模型，并用 Embed 技术进行自由度的耦合；OpenSEES 分析时采用 dispBeamColumn 梁柱单元，混凝土采用 Concrete01本构模型，采用 Mander 模型考虑箍筋的约束作用对混凝土本构参数进行修正，钢筋采用 Steel02本构模型。通过两种软件对钢筋混凝土柱在反复荷载作用下的受力分析以及与试验结果的对比，OpenSEES 的模拟结果能更全面反映柱的滞回曲线的整体特性，因此对于压弯受力特征的钢筋混凝土柱建议采用 OpenSEES 进行反复荷载作用下的非线性分析。
分彆應用有限元分析軟件 ABAQUS 和 OpenSEES 對 Kawashima Earthquake Engineering Labora-tory 數據庫中的一根鋼觔混凝土柱在反複荷載作用下力-位移的滯迴麯線進行瞭數值模擬研究。ABAQUS 分析時採用分離式建模，混凝土採用實體單元，鋼觔採用桁架單元，混凝土的本構關繫採用混凝土損傷塑性模型，其中損傷因子採用基于能量損傷原理進行計算，鋼觔本構關繫採用一種再加載剛度按 Clough 本構退化的隨動硬化單軸本構模型，併用 Embed 技術進行自由度的耦閤；OpenSEES 分析時採用 dispBeamColumn 樑柱單元，混凝土採用 Concrete01本構模型，採用 Mander 模型攷慮箍觔的約束作用對混凝土本構參數進行脩正，鋼觔採用 Steel02本構模型。通過兩種軟件對鋼觔混凝土柱在反複荷載作用下的受力分析以及與試驗結果的對比，OpenSEES 的模擬結果能更全麵反映柱的滯迴麯線的整體特性，因此對于壓彎受力特徵的鋼觔混凝土柱建議採用 OpenSEES 進行反複荷載作用下的非線性分析。
분별응용유한원분석연건 ABAQUS 화 OpenSEES 대 Kawashima Earthquake Engineering Labora-tory 수거고중적일근강근혼응토주재반복하재작용하력-위이적체회곡선진행료수치모의연구。ABAQUS 분석시채용분리식건모，혼응토채용실체단원，강근채용항가단원，혼응토적본구관계채용혼응토손상소성모형，기중손상인자채용기우능량손상원리진행계산，강근본구관계채용일충재가재강도안 Clough 본구퇴화적수동경화단축본구모형，병용 Embed 기술진행자유도적우합；OpenSEES 분석시채용 dispBeamColumn 량주단원，혼응토채용 Concrete01본구모형，채용 Mander 모형고필고근적약속작용대혼응토본구삼수진행수정，강근채용 Steel02본구모형。통과량충연건대강근혼응토주재반복하재작용하적수력분석이급여시험결과적대비，OpenSEES 적모의결과능경전면반영주적체회곡선적정체특성，인차대우압만수력특정적강근혼응토주건의채용 OpenSEES 진행반복하재작용하적비선성분석。
In this paper,the finite element software ABAQUS and OpenSEES were adopted to simulate a rein-forced concrete column,which was tested in Kawashima Earthquake Engineering Laboratory.For the ABAQUS model,a separate model is constructed by using solid elements for concrete model and truss elements for steel model.The concrete damaged plasticity model was used to consider the concrete constitutive relation-ship and the damage factor was calculated based on the principles of energy loss.The stress-strain relationship of the steel bar was simulated by the uniaxial constitutive relationship in which the degradation of the stiff of the reloading was assumed to obey the Clough′s kinematic hardening model.Through the embed technology, the degree of freedom was coupled.In the OpenSEES,the dispBeamColumn element was used to simulate the column and the Concrete01 model was adopted to consider the concrete constitutive relationship which was modified through the Mander model to consider the influence of stirrup.The Steel02 model was used to consid-er the constitutive relationship of steel bar.Through the comparison of the analysis results,it is found that the simulation results from the OpenSEES is closer to the actual experimental results.Therefore,it is suggested that the OpenSEES can be adopted to analyze the nonlinear performance of reinforced concrete column under cyclic loading.
