钢管混凝土柱压、弯、剪强度的研究与理论解析

THE SHUDY AND ANALYSIS OF COMPRESSION, FLEXURE AND SHEARING STRENGTH OF CONCRETE FILLED STEEL TUBE COLUMNS

本文依据钢管混凝土柱在压、弯.剪复合作用下的试验分析,按不同剪跨比的不同传力路线和破坏模式,应用混凝土的楔劈强度理论及塑性力学,并考虑钢管和混凝土的相互作用,建立了一组钢管混凝土柱的强度计算公式,所推荐的公式既有理论基础,也符合实验结果,并且简单适用。

Based on the experimental results for concrete filled steel tube columns subjected to compressson, flexure and shearing, for different shear span ratio, the transfer mechanism and the failure modes, the interaction between the steel tube and the concrete, a series formulas for evaluating the strength of the concrete filled steel tube column have been established by using the wedge theory and plasticity. It is found that the oftairred results by the presenting formulas are in good agreement with the experimental results these formulas are simple and suitable for engineering application.