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RPC-NC组合梁弯曲承载力的影响因素
Factors Influencing Bearing Capacity of RPC-NC Composite Beam
投稿时间: 2016-09-28  最后修改时间: 2017-04-25
DOI:
中文关键词:  RPC-NC叠合试件  界面粗糙度  承载力  极差分析
英文关键词:RPC-NC composite specimen  interface roughness  bearing capacity  gradation analysis
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)资助
作者单位E-mail
鞠彦忠 东北电力大学 juyanzhong@126.com 
孙启健 东北电力大学 1773639249@qq.com 
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中文摘要:
      为研究RPC-NC叠合构件承载力影响因素,以RPC水胶比、界面粗糙度及RPC厚度为研究因素,根据正交试验设计了9组27个RPC-NC叠合梁试件,进行四点弯曲试验,并进行极差分析研究各因素对承载力的影响。实验结果表明:RPC-NC叠合试件承载力明显高于C30混凝土弯曲试件,承载力提高了65.36%-157.76%,且RPC表现出良好的控裂能力;界面粗糙度对承载力的影响最大,RPC厚度次之,RPC水胶比影响最小;试验得到最优配合为界面切槽处理、RPC厚度为50mm、RPC水胶比为0.22。
英文摘要:
      For the study of the factors influencing the bearing capacity of RPC-NC composite specimens, selected RPC water-binder ratio, interfacial roughness and thickness of the RPC as the research factors. According to the orthogonal experiment designed nine groups of 27 RPC-NC composite beam specimens, four-point bending test was conducted and studied the effect of various factors on the adhesive power by gradation analysis. The results showed that the RPC-NC bearing capacity of composite specimens were significantly higher than C30 concrete bending specimen, the bearing capacity improved 74.33% -157.76%, and RPC showed good ability to control crack. The interface roughness was the biggest factor influencing the bearing capacity, RPC thickness followed, RPC water-binder ratio was the minimum. The interface slotting treatment, RPC thickness of 50mm and RPC water-binder ratio of 0.22 was the optimal combination.
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