钢纤维全轻混凝土叠浇配筋梁裂缝宽度试验研究  

Experimental Study on the Crack Width in Reinforced Superposed Steel Fiber Reinforced Full-lightweight Concrete Beams

作　　者：李长永[1] 彭超[1] 丁新新[1] 潘丽云[1] 

机构地区：[1]华北水利水电大学土木与交通学院,河南郑州450045

出　　处：《华北水利水电大学学报（自然科学版）》2016年第2期52-56,共5页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

基　　金：河南省教育厅科学技术研究重点项目资助计划(12A560008);河南省高校生态建筑材料与结构工程科技创新团队(13IRTSHN002)

摘　　要：根据钢纤维全轻混凝土叠浇配筋梁、钢筋混凝土梁和钢筋钢纤维全轻混凝土梁的受弯性能试验,结合裂缝分型统计分析,研究了纵向受拉钢筋配筋率和钢纤维全轻混凝土截面高度对叠浇梁正截面主要裂缝分布平均间距、平均宽度和最大宽度的影响规律,提出了钢纤维全轻混凝土配筋叠浇梁正截面裂缝计算公式。研究成果为钢纤维全轻混凝土配筋叠浇梁正常使用极限状态裂缝验算提供了计算方法。Based on the experimental study on flexural behaviors ofreinforcedsuperposedsteel fiber reinforced full-lightweight concrete（ SFRFLC） beams,reinforced concrete beams and reinforced SFRFLC beams,and combined with the crack classification statistical analysis,the effects of the longitudinal tensile reinforcement ratio and the sectional depth of SFRFLC on the mean crack space and maximum crack widthinthe normal cross-section of the test reinforced superposed beams werediscussed,the formulas were proposed for the calculation of the normal-sectional cracksin reinforced superposed SFRFLC beams. The results provide a calculation methodfor the checking calculation of the cracks under the normal serviceability of reinforced superposed SFRFLC beams.

关 键 词：叠浇梁 钢纤维全轻混凝土 截面高度 纵向受拉钢筋配筋率 裂缝分布 裂缝宽度 

分 类 号：TV332[水利工程—水工结构工程] TU528[建筑科学—建筑技术科学]