宗周红¹  魏潮文²  程浩德¹  林于东¹
    （1 福州大学土木建筑工程学院 350002； 2 浙江杭萧钢构股份有限公司  杭州 310003）

[提要]  进行了8根受正弯矩作用、4根受负弯矩作用的帽型截面钢-混凝土组合梁的静载试验研究，考虑的主要参数有截面几何特性、混凝土强度、跨高比等，分析了荷载-变形、沿梁长度的滑移分布、截面高度方向的应变分布、破坏模态与极限强度等的规律，简化计算模型计算结果与试验结果较为吻合。
[关键词]  帽型组合梁  试验  强度  变形

Total 12 steel-concrete composite beams with U-shape section were designed and tested under static loading, eight were subjected to positive bending moment and others to negative bending moment. The main parameters, including geometric characteristics, concrete strength, and the ratio of span to height, were considered. The changes of load-deflection relationships, the load-slip relationships along the span of beam and the strain distribution along the height of composite section are analyzed. The failure mode and the ultimate strength of the structure are also studied. The values predicted by the simplified calculation model are found to correlate well to the measured data.
Keywords: U-shape  composite  beam; experiment; strength; deformation