钢-高强钢纤维混凝土组合梁负弯矩区裂缝研究

摘要

摘要：对钢一高强钢纤维混凝土组合梁的抗裂性能及其裂缝开展宽度进行反位试验研究，研究了高强钢纤维混凝土在各个加载阶段的裂缝开展情况。研究表明，高强钢纤维混凝土具有开裂荷载较高、相同加载水平条件下裂缝宽度较小、相同挠曲变形时裂缝比较密集、最大裂缝宽度较小的特点，且达到使用极限状态时荷载水平较高。%The paper undertakes the anti-position experiment research on the anti-crack performance of the steel-high-strength steel fiber rein- forced concrete composite beams and the width of the cracks, researches the cracks at all loading stages of the high-strength steel fiber reinforced concrete, proves by the study the features of the high-strength steel fiber reinforced concrete, including the higher cracking load, the small width of the cracks under the same load conditions, the intensity of the cracks in the same flexure deformation, and smaller cracks of its largest crack, and the higher load in the ultimate status.