摘要
本文根据8根离心钢管混凝土柱的中心受压试验,研究了钢管和混凝土的应力一应变关系,钢管对环形沸凝土的约束效应,以及离心钢管混凝土柱的受压破坏机理.并讨论了混凝土提高钢管刚度及其承载能力的问题.提出了设计钢管混凝土空心柱的强度与挠度的计算公式和方法.可供工程设计中参考。
In this paper, a load-strain relation Curve of the centrifugally spun Concrete-steel tubular columns subjccted to axial loading is obtained from the test results of 8 such columns. The confine effect of steel tube for the ring concrete and the cooperative working mechanism of the centrifugally spun concrete-steel tubular columns are studied and analysied, the influence of the concrete on the stiffness of steel tube and the capacity of subjected loading as well. Furthermore the formulas for calculating the ultimate strength and the defleetion of the centrifugally spun conerete steel tubular columns are presented, the suggested formulas and method are given for reference in the engineering design.
关键词
钢管
混凝土
柱
离心法
强度
ultimate strcngth
Steel tube
centrifugally spun concrete column
