[提要]  介绍了3根方钢管混凝土柱在混凝土浇筑过程中的钢管侧壁压力和钢管环向应变的试验结果。讨论了不同坍落度、有或无振捣对钢管侧壁压力和环向应变的影响，并对理论值与实测值进行了比较和分析。
[关键词]  矩形钢管混凝土柱  侧壁压力  湿混凝土  试验研究

Experimental results of the lateral pressure of concrete on the wall of steel tubes and the transverse strain in steel tubes of three concrete-filled rectangular steel columns during placing of concrete are presented. Influence of the slump and vibration of concrete on the lateral pressure and the transverse strain is discussed. The theoretical values and experimental values are compared and analyzed.
Keywords: concrete-filled rectangular steel column; lateral pressure; placing of concrete; experlmental research