摘要
采用OpenSees作为有限元分析平台对6根型钢再生混凝土轴压试件和9根偏压试件进行受压静载试验全过程的非线性数值模拟,分析了再生混凝土取代率、长细比及混凝土强度对型钢再生混凝土组合柱轴心受压承载力的影响和再生混凝土取代率、相对偏心距及混凝土强度对型钢再生混凝土组合柱偏心受压承载力的影响。在分析中,选用基于柔度法的纤维模型进行型钢再生混凝土柱的静力非线性分析,并结合梁柱杆件单元,根据不同的材料属性对型钢再生混凝土柱正截面进行精细划分,来实现型钢再生混凝土柱的模拟技术。与试验的对比分析表明,OpenSees能够有效地模拟型钢再生混凝土柱正截面的受力和变形过程,具有较好的计算精度。
In this paper, it was carried out nonlinear numerical simulation of six axial specimens and nine eccentric compression specimens of steel reinforced recycled aggregate concrete columns using open-source earthquake engineering simulation system OpenSees. It was also analysed the effects of the recycled aggregate replacement rate, slenderness ratio and concrete strength on the bearing capacity of the exially loaded specimens, and also analyzed the effects of the recycled aggregate replacing rate, relative eccentricity and concrete strength on the bearing capacity of the eccentrically loaded specimens. In the analyzing process, the column section was fine-divided and different fibers were defined to simulate the appropriate material properties. And then, a model of SRRAC column was established based on the nonlinear beam-column element. The comparative analysis of the simulation results and the experimental results indicates that OpenSees Program can be used in simulating the loading process of steel reinforced recycled aggregate concrete columns effectively.
出处
《工业建筑》
CSCD
北大核心
2013年第9期23-29,共7页
Industrial Construction
基金
国家自然科学基金项目(51178384)
住房和城乡建设部科学技术项目(2012-K2-12)
陕西省留学人员科技活动择优资助项目(陕外专发[2010]26号)
陕西省教育厅科研计划项目(12JK0902)
广西自然科学基金重点项目(2013GXNSFDA019025)
广西防灾减灾与工程安全重点实验室开放课题(2012ZDK01)
关键词
型钢再生混凝土
偏压柱
纤维模型
静力非线性分析
数值模拟
steel reinforced recycled aggregate concrete
eccentric compression column
fiber model
static nonlinear analysis
numerical simulation
