小跨高比钢板-混凝土组合连梁抗震性能试验研究

发布时间：2018-04-09 04:26

本文选题：钢板-混凝土组合连梁　切入点：带板连梁　出处：《建筑结构学报》2015年02期

【摘要】：通过7个小跨高比钢板-混凝土组合连梁试件的拟静力试验,研究了连梁跨高比、钢板配钢率以及楼板等因素对其抗震性能的影响,分析了连梁的破坏过程、破坏形态、承载能力、变形能力和耗能能力等。结果表明:相比于不考虑楼板小跨高比PRC连梁,考虑楼板小跨高比PRC连梁增大了连梁的开裂位移,显著提高了连梁的受剪承载力和耗能能力,考虑楼板连梁试件相比于不考虑楼板连梁试件受剪承载力提高了18.03%,破坏时对应的累积耗能是后者的1.66倍;连梁钢板的破坏包括梁墙交界区钢板的开裂和钢板的局部屈曲,钢板的局部屈曲可分为钢板边缘发生的受压局部屈曲和钢腹板的剪切局部屈曲;小跨高比PRC连梁试件的剪压比实测值为0.20~0.30,相应的剪压比设计值为0.39~0.59,内嵌钢板显著提高了小跨高比连梁的剪压比限值。
[Abstract]:Based on the pseudo-static tests of seven steel / concrete composite beams with small span height ratio, the effects of the ratio of span to height, steel plate ratio and floor slab on the seismic behavior of the composite beams are studied. The failure process and failure form of the connected beams are analyzed.Bearing capacity, deformation capacity and energy dissipation capacity, etc.The results show that compared with PRC continuous beam with small span to height ratio, the crack displacement of continuous beam is increased by considering PRC beam with small span height ratio, and the shear bearing capacity and energy dissipation capacity of continuous beam are greatly improved.Considering that the shear capacity of the slabs connected with beams is increased by 18.03 and the cumulative energy consumption during failure is 1.66 times of the latter, the failure of steel plates with beams and beams includes the cracking of steel plates at the junction of beams and walls and the local buckling of steel plates.The local buckling of steel plate can be divided into compression local buckling at the edge of steel plate and shear local buckling of steel web plate.The measured shear / compression ratio of PRC continuous beam with small span / height ratio is 0.20 ~ 0.30 and the corresponding design value of shear / compression ratio is 0.39 ~ 0.59. The shear / pressure ratio limit of small span / height ratio continuous beam is significantly increased by embedded steel plate.
【作者单位】：西安建筑科技大学土木工程学院;
【基金】：国家自然科学基金项目(51178380,51478382)
【分类号】：TU973.31

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