摘要
为研究轴压作用下混凝土强度对玻璃纤维增强塑料布约束钢筋混凝土方柱力学性能的影响规律,通过对玻璃纤维增强塑料布约束钢筋混凝土方柱轴压试验,并选取钢筋混凝土方柱作为对照组.分析试件分别在不同混凝土强度下的受压承载力破坏机理,利用ANSYS有限元软件对试件模型进行仿真分析;基于此进行试件静力分析,考察玻璃纤维增强塑料布约束不同等级混凝土强度的钢筋混凝土方柱的力学性能规律.结果表明:混凝土强度等级提高时,玻璃纤维增强塑料布与钢筋混凝土方柱之间的协同工作力学性能提高越加显著,玻璃纤维增强塑料布约束钢筋混凝土柱的极限承载力增加,且提高幅度随其强度等级提高而增大;试件的破坏位置随其强度等级增大而沿方柱轴向从中部向上下扩展.
In order to study the influence of concrete strength on the mechanical properties of reinforced concrete columns subjected to glass fiber reinforced plastic sheets under axial compression, the axial compression test of reinforced concrete columns and unconfined reinforced concrete columns subjected to glass fiber reinforced plastic is taken. The failure mechanism of the bearing capacity under different concrete strength is analyzed. And the model of the specimen is simulated by ANSYS finite element software. On this basis, the influence of different grades of concrete strength on the mechanical properties of reinforced concrete columns strengthened with glass fiber reinforced plastic is investigated. The results show：The synergistic mechanical properties between the glass fiber reinforced plastic sheet and the reinforced concrete column are more obvious when the concrete strength grade is improved;And the ultimate bearing capacity of reinforced concrete columns strengthened with glass fiber reinforced plastic sheets is increased and the increase rate rises with the strength grade of concrete. The destruction position of the specimen is extended from the center to the upper and lower sides along the axial direction of the concrete as the strength grade of the concrete increases.
出处
《西安工业大学学报》
CAS
2017年第8期585-593,共9页
Journal of Xi’an Technological University
基金
国家自然科学基金(51308028)
黑龙江省教育厅科学技术研究项目(12543023)
关键词
玻璃纤维布
钢筋混凝土
有限元
极限承载力
glass fiber cloth
reinforced concrete
finite element
ultimate bearing capacity
