钢筋混凝土梁裂缝分布受配筋影响的试验研究  

Experimental Study on Crack Distribution of Reinforced Concrete Beams Influenced by Reinforcement

作　　者：管俊峰[1] 赵顺波[2] 黄承逵[1] 

机构地区：[1]大连理工大学土木水利学院,大连116024 [2]华北水利水电学院土木与交通学院,郑州450011

出　　处：《武汉理工大学学报》2009年第11期56-60,共5页Journal of Wuhan University of Technology

基　　金：河南省杰出青年科学基金(04120002300);河南省高校创新人才培养工程培养对象基金(豫教高[2004]294号)

摘　　要：结合工程检测实际需要,通过试验量测了不同配筋的钢筋混凝土梁在正常使用各级荷载下不同高度处的裂缝间距与裂缝宽度,分析了纵向受拉钢筋的配置对受拉区内任意位置处裂缝间距与裂缝宽度的影响规律,改进了平均裂缝间距的计算模式。研究了受拉区内实测各点裂缝宽度与侧面钢筋重心水平处裂缝宽度的比值关系,提出了该比值的计算方法。Combined with the requirement of structural inspection, the crack spacing and crack width at various heights in the tensile region of reinforced concrete beams with different reinforcement were measured under several loading levels of service- ability state. The effects of reinforcement variation on the crack spacing and crack width were analyzed. The improved model was proposed for calculating the average crack spacing. The relationships of crack widths at any position in the tensile zone and at the reinforcement level on the side surface were researched. By theoretical analysis and fitting test values, a method was proposed to calculate the ratios of crack widths between any position and the reinforcement level on the side surface of reinforced concrete flexural members.

关 键 词：钢筋混凝土梁 纵向受拉钢筋 裂缝分布 裂缝间距 宽度比值 

分 类 号：TU375.1[建筑科学—结构工程]