The cyclo - hoop effect which steel tubular has exert to the concrete shows the character of heterogeneous in the arch rib section , the same to the axial direction . the paper verifies the change of the material poisson ration and the concrete grade will make the cyclo - hoop effect obvious alteration , the change of the cyclo - hoop effect and the stress redistribution of the section produced by the shrinking and creeping of the concrete and the expensive concrete on the section 在钢管混凝土拱肋断面上,钢管对内填混凝土的环箍效应具有非均匀性,在拱轴方向上环箍效应也呈现非均匀性。验证了材料的横向变形系数、混凝土标号等参数的变化将引起环箍效应的明显改变;混凝土的收缩、徐变和膨胀混凝土的应用导致钢管混凝土的环箍效应发生变化并使截面的应力发生重分布;并总结了其变化的基本规律。