摘要
为了进一步研究空间钢构架约束混凝土的本构关系,进行了5个空间钢构架混凝土柱试件在轴向荷载作用下的静力试验,分析了缀条宽度、缀条间距等对空间钢构架混凝土柱的受力性能的影响。在试验研究的基础上,结合已有的试验研究,建立了空间钢构架约束混凝土峰值应力值及其对应的应变值的计算公式,并提出了两种空间钢构架约束混凝土本构关系模型。分析结果表明:本文所提出的空间钢构架约束混凝土本构关系曲线计算值与试验值符合较好,峰值应力及其对应的应变误差控制在10%以内,尤其第二种本构关系模型曲线的下降段理论值与试验值更为接近。研究成果可为空间钢构架约束混凝土结构构件有限元分析提供技术支撑。
In order to further study the constitutive relation of concrete confined by the spatial steel frame,the static test of 5 spatial steel frame concrete columns is conducted under axial load,and then the influence of strip width and strip spacing on the mechanical behaviors of spatial steel frame concrete columns is analyzed.On the basis of the experimental research,and combined with the existing experimental research of our research group,the calculation formula of the spatial steel frame confined concrete maximal stress value and its corresponding strain value are established,and two kinds of the spatial steel frame constrained concrete constitutive relation models are proposed.The results show that the calculated value of the spatial steel frame confined concrete constitutive relationship curve agrees with the test value,the maximal stress and its corresponding strain error are controlled within 10%,in particular,the theoretical value of the curve descent segment of the second constitutive relationship model is closer to the test value.The results can provide technical support for finite element analysis of the spatial steel frame confined concrete structure and components.
作者
胥阳康
唐兴荣
XU Yangkang;TANG Xingrong(School of Civil Engineering,SUST,Suzhou 215011,China)
出处
《苏州科技大学学报(工程技术版)》
2025年第2期7-12,共6页
Journal of Suzhou University of Science and Technology(Engineering and Technology Edition)
关键词
空间钢构架
约束混凝土
本构关系
试验研究
spatial steel frame
confined concrete
constitutive relation
experimental research
