哈尔滨工程大学学报2015，Vol.36Issue(10)：1335-1340,6.DOI:10.11990/jheu.201404077
高强钢筋超高性能混凝土梁的使用性能研究
Serviceability research of ultra-high performance concrete beams reinforced with high strength steel bars
摘要
Abstract
To study the serviceability of ultra-high performance concrete ( UHPC ) beams reinforced with high strength steel bars, the flexural properties of six UHPC beams were tested. Then the change law of load-deflection of the UHPC beam was concluded, the cracking moment, the short term stiffness and cracking width, and the calcula-tion methods were summarized. Based on the code for design of concrete structures (GB 50010-2010), the cross sectional plastic coefficient influencing the regression equation of UHPC beam′s cracking moment was concluded, the rebar nonuniform coefficient of UHPC beam, the internal lever arm coefficient of cracking cross section, and the average integrated strain coefficient were ascertained to calculate the beam′s short term stiffness. The beam′s short term stiffness was calculated and compared, based on the adjusted calculating method for steel fiber reinforced con-crete. In addition, a modified cracking width calculation formula was generated.关键词
超高性能混凝土/高强钢筋/混凝土梁/开裂弯矩/短期刚度/裂缝宽度/使用性能Key words
ultra-high performance concrete/high strength steel bar/concrete beam/crack moment/short time stiffness/cracking width/serviceability分类
建筑与水利引用本文复制引用
邓宗才,肖锐,徐海宾,陈春生,陈兴伟..高强钢筋超高性能混凝土梁的使用性能研究[J].哈尔滨工程大学学报,2015,36(10):1335-1340,6.基金项目
国家自然科学基金资助项目(51378032) （51378032）
教育部博士点基金资助项目(20131103110017) （20131103110017）
北京市自然科学基金资助项目(8142005). （8142005）
