摘要
以含钢管率、长径比为试验参数进行了13根试件的轴心受压试验,考察了预制钢管超高强石渣混凝土叠合柱轴压时的破坏形态,比较了钢筋混凝土柱、钢管超高强石渣混凝土柱和预制钢管超高强石渣混凝土叠合柱的轴压性能,分析了长径比、含钢管率对叠合柱受压性能的影响.试验结果表明：在试验参数范围内,叠合柱试件无一例外都是因为箍筋绽开,外层的混凝土退出工作,导致叠合柱失稳破坏,因此为了确保外层的混凝土始终发挥应有的作用,建议采取加密箍筋,延长箍筋的锚固长度等构造措施;叠合柱的轴压性能优于钢筋混凝土柱,叠合柱具有较大的后期承载力和良好的延性性能,其极限应变达到钢筋混凝土柱极限应变的1.86~8.29倍.
Based on the experimental studies of 13 specimens with the two different parameters including the steel tube area ratio and the slenderness ratio of the specimens,this paper tries to describe the failure modes of the composition columns reinforced with the prefabricated green super high strength concrete used stone-chip（GSHSCUS）,and to compare with behavior of the axial load among the composition columns reinforced with the prefabricated GSHSCUS,RC column and GSHSCUS,and then to analyze the influence of the steel tube area ratio and the slenderness ratio of specimens.Experiment results show that it is the outer concrete failing to work that resulted in their instability.Therefore,it is necessary to take such reinforcement measures as narrowing the spacing of stirrups,extending the anchor length to assure outer concrete,etc.Mechanical properties of composition columns reinforced with the prefabricated GSHSCUS are superior to that of RC columns,with better residual load capacity and ductility showing the ultimate strain being 1.86 to 8.29 times.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第6期819-825,共7页
Journal of Xiamen University：Natural Science
基金
福建省自然科学基金计划资助项目(2007J0163)
莆田市科技计划项目(2007G26)
关键词
轴压性能
叠合柱
混凝土柱
mechanical properties
composition columns
concrete columns
