型钢外包活性粉末混凝土柱受力性能和裂缝宽度及变形研究  

Fracture Morphology and Deformation Analysis of Steel Reinforced Reactive Powder Concrete Columns Under Compression

作　　者：卜良桃[1] 万阳 BU Liangtao;WAN Yang(College of Civil Engineering,Hunan University,Changsha,Hunan 410082,China)

机构地区：[1]湖南大学土木工程学院

出　　处：《公路工程》2019年第3期147-153,共7页Highway Engineering

基　　金：国家自然科学基金项目(5127887);国家火炬计划资助项目(2013GH561393)

摘　　要：对6根型钢外包活性粉末混凝土柱分别进行轴心受压和偏心受压试验,得出了型钢外包活性粉末混凝土柱在轴心受压与偏心受压状态下裂缝的开展规律及变形特征;对不同强度等级的试验柱的试验结果进行对比分析,研究了各级荷载作用下试验柱的受力性能。并采用有限元软件对试验进行模拟,得出试件的裂缝云图及荷载变形曲线,与试验结果对比,吻合度较高,说明上述研究可为型钢活性粉末混凝土柱工程应用提供理论依据。Axial compression and eccentric compression tests were carried out for six steel columns reinforced by reactive powder concrete (RPC).The fracture morphology and deformation characteristics of the test columns under the ultimate load are studied,and the experimental results of the reactive powder concrete steel columns with different strength grades are compared and analyzed.The test results of test columns with different strength levels are compared and analyzed,and the mechanical properties of test columns under different loads are studied.The finite element software is used to simulate the test,and the fracture cloud diagram and load deformation curve of the specimen are obtained.Compared with the test results,the simulation has a high degree of anastomosis.The above research can provide theoretical basis for the engineering application of RPC columns.

关 键 词：型钢外包活性粉末混凝土柱 受力性能 裂缝宽度 变形特征 

分 类 号：TU375.3[建筑科学—结构工程]