- 摘 要
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宗周紅1 魏潮文2 程浩德1 林于東1
（1 福州大學土木建筑工程學院 350002； 2 浙江杭蕭鋼構(gòu)股份有限公司 杭州 310003）[提要] 進行了8根受正彎矩作用、4根受負彎矩作用的帽型截面鋼-混凝土組合梁的靜載試驗研究，考慮的主要參數(shù)有截面幾何特性、混凝土強度、跨高比等，分析了荷載-變形、沿梁長度的滑移分布、截面高度方向的應變分布、破壞模態(tài)與極限強度等的規(guī)律，簡化計算模型計算結(jié)果與試驗結(jié)果較為吻合。
[關鍵詞] 帽型組合梁 試驗 強度 變形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
