【摘要】 为研究聚羧酸减水剂对型钢混凝土界面黏结性能的影响,通过ABAQUS模拟型钢混凝土推出试验,分析混凝土强度、型钢强度、聚羧酸减水剂对型钢混凝土的界面黏结性能的影响,得出型钢混凝土推出试验的载荷-滑移曲线.参考化学胶结力求解方法及公式,引入聚羧酸减水剂对混凝土弹性模量的增强系数,得到添加聚羧酸减水剂的型钢混凝土界面化学胶结力求解公式.结果表明,混凝土强度对型钢混凝土界面的化学胶结力有很大的提升作用,型钢强度对界面的化学胶结力影响不大,这可为型钢混凝土的黏结滑移计算提供可参考的有限元模拟方法.更多还原

【Abstract】 In order to study the effect of polycarboxylate superplasticizer on the interface bonding performance of steel reinforced concrete(SRC), ABAQUS was used to simulate the test of SRC to analyze the influence of concrete strength, strength of section steel, and polycarboxylate superplasticizer on the interface bonding performance of SRC, and the load-slip curve of SRC push-out test was obtained. Referring to the chemical bonding force solution method and formula, introducing the enhancement coefficient of the polycarboxylate superplasticizer to the elastic modulus of concrete, the formula for solving the chemical bonding force of the steel-concrete interface with polycarboxylate superplasticizer was obtained. The results show that the strength of concrete has a great effect on the chemical bonding force of the steel-concrete interface, while the strength of the steel has little effect on the chemical bonding force of the interface. It provides a reference finite element simulation method for the calculation of the bond slip of SRC.更多还原