摘要
根据国内外有关型钢混凝土黏结滑移的试验研究资料,建立型钢混凝土工字钢柱的拉拔力学模型,引入能量法求解了型钢混凝土界面的相对滑移.将型钢混凝土工字钢柱截面分为3部分,利用最小势能原理建立沿锚固长度方向的型钢与混凝土界面的相对滑移计算公式,并进行了数值计算与分析.研究结果表明,构件中型钢与混凝土界面的相对滑移具有二次曲线分布的基本特征,与相关试验结论一致.
According to experimental materials on bond-slip behaviors of steel reinforced concrete, the mechanics model of a pull-out steel I-columns built up and the slip displacement between steel and concrete of a steel I-column subjected to pull-out load is studied by the energy method. The cross section of steel I column is divided into three parts. Slip displacement formulation along the embedment length is derived by the principle of minimum potential energy. Calculation results showed that the slip curves have the basic characteristic of quadratic curves distribution. The results can be used to describe the interface slips between steel and concrete under complicated loads, and besides to study the bond-slip constitutive relationship between steel and concrete.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2009年第6期475-478,共4页
Transactions of Beijing Institute of Technology
基金
河南省科技攻关项目(002462004)
河南省教育厅自然科学基金项目(200510464007)
