【摘要】 通过理论分析和缩尺模型试验,对水平荷载作用下空心板柱结构的受力性能进行了研究。通过对空心楼板截面钢筋、混凝土应变的分析,证实楼板截面抗弯应力沿板宽度范围的分布是不均匀的,即存在"剪力滞后"现象;通过对弹性阶段等代梁宽度系数的理论值、试验值及规范计算值进行比较,对弹性阶段等代梁计算宽度的取值进行了探讨,表明规范值是偏安全的,并给出了相同几何参数条件下空心板柱结构等代梁计算宽度的修正系数。更多还原

【Abstract】 The mechanical performance of the hollow slab-column structure were studied by theoretical analysis and 1/3 scale model experimental research.The shear lag phenomenon has been confirmed by analysis of strain curves for the concrete and reinforcement.The calculating width of the equivalent beam in elastic stage was studied by comparison of theoretical value,experimental value and the code value.It is proposed that the code value is safe,and the modified coefficient of equivalent beam width of the cast-in-situ concrete hollow slab-column structure is given.更多还原