摘要
为研究形状记忆合金(Shape Memory Alloy,简称SMA)环向加固自密实轻骨料混凝土柱的轴心抗压性能,通过轴心抗压试验探究混凝土内部裂缝从产生、发展到最终断裂的演化规律.分别制备了素混凝土柱、被动约束混凝土柱和主动约束混凝土柱试样,并在轴压试验之前对材料基本工作性能进行测试.获得了形状记忆合金和自密实轻骨料混凝土的基本力学性能和3种混凝土试样承载性能的变化规律.结果表明:试件的轴向和环向变形能力均有所提升,被动约束试件的承载能力提升2.28%,主动约束试件的承载能力提升16.96%.
In order to study the axial compressive performance of self compacting lightweight aggregate concrete columns reinforced with shape memory alloy(SMA)in the circumferential direction,the evolution of internal cracks in concrete from generation,development to final fracture was explored through axial compressive tests.Samples of plain concrete columns,passively restrained concrete columns,and actively restrained concrete columns were prepared,and the basic working properties of the materials were tested before the axial compression test.The basic mechanical properties of shape memory alloy and self compacting lightweight aggregate concrete were obtained,as well as the variation patterns of the load-bearing properties of three types of concrete specimens.The results show that the axial and circumferential deformation capacity of the specimen has been improved,with a 2.28%increase in the load-bearing capacity of the passively restrained specimen and a 16.96%increase in the load-bearing capacity of the actively restrained specimen.
作者
徐立丹
马祥宇
XYU Lidan;MA Xiangyu(Civil Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010,China)
出处
《内蒙古科技大学学报》
CAS
2023年第4期321-326,共6页
Journal of Inner Mongolia University of Science and Technology
基金
内蒙古自治区自然科学基金资助项目(2020BS01008).
