实腹式型钢混凝土梁受扭性能试验研究*
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邵永健1，郁文1，陈宗平2，余兴国2，翁晓红1（1 苏州科技学院， 苏州 215011； 2 广西大学， 南宁530004）［摘要］为研究实腹式型钢混凝土梁在扭矩作用下的受力性能，进行了6根不同参数实腹式型钢混凝土梁和1根钢筋混凝土梁的纯扭试验。试验结果表明：实腹式型钢混凝土受扭构件与钢筋混凝土受扭构件的开裂机会相等，可以忽略型钢对开裂扭矩的影响；但型钢对极限扭矩有大幅提高作用，并有效改善了构件的延性；减小箍筋间距和增大配钢率可以提高型钢混凝土构件的受扭承载力。通过分析提出了型钢混凝土纯扭构件开裂扭矩和极限扭矩的计算公式，计算结果与试验结果吻合较好。［关键词］型钢混凝土； 受扭构件； 开裂扭矩； 极限扭矩中图分类号：TU317+.2 文献标识码：A 文章编号：1002-848X(2013)08-0058-05Experimental study on torsional behavior of solid web steel reinforced concrete beamsShao Yongjian1, Yu Wen1, Chen Zongping2, Yu Xingguo2, Weng Xiaohong1(1 Suzhou University of Science and Technology,Suzhou 215011,China; 2 Guangxi University,Nanning 530004,China)Abstract: In order to study the torsional behavior of steel reinforced concrete beams, experiments were conducted on six steel reinforced concrete beams with different parameters and one reinforced concrete beam subjected to pure torsion. Test and analysis results show that the cracking torque is almost the same for steel reinforced concrete structures and reinforced concrete structures with torsion. The influence of steel on the cracking torque can be neglected. Steel can greatly improve the ultimate torque and the ductility. The torsion resistance loading of SRC structures can be increased by decreasing the stirrup spacing or increasing sectional steel area ratio. The formulaes about cracking torque and ultimate torque were presented. The predicted results are in good agreement with the measured ones.Keywords: steel reinforced concrete; torsion member; cracking torque; ultimate torque*国家自然科学基金项目（51078249）。参考文献［1］赵鸿铁.组合结构设计原理［M］.北京：高等教育出版社,2005.［2］范涛. 浅述型钢混凝土结构的特点及应用［J］. 四川建筑科学研究,2004,30(4):38-39.［3］聂建国,唐亮,魏茂林. 钢-混凝土组合梁扭转的组合作用分析［J］.工业建筑,2008,38(3):1-4.［4］傅传国, 李玉莹, 孙晓波，等. 预应力及非预应力型钢混凝土框架受力及抗震性能试验研究［J］.建筑结构学报,2010,31(8):15-21.［5］张根俞. 型钢混凝土梁受扭性能的试验研究及理论分析［D］. 南京：东南大学,2009.［6］KANG THK, KIM W, KWAK YK. Shear testing of steel fiber-reinforced light weight concrete beams without web reinforcement［J］. ACI Structural Journal，2011,108(5): 553-561.［7］GAN DAN, GUO LANHUI, LIU JIEPENG, et al. Seismic behavior and moment strength of tubed steel reinforced-concrete (SRC) beam-columns［J］. Journal of Constructional Steel Research, 2011, 67（10）:1516-1524.［8］GB 50010—2010混凝土结构设计规范 ［S］.北京:中国建筑工业出版社,2011.
