實腹式型鋼混凝土梁受扭性能試驗研究*
邵永健1，郁文1，陳宗平2，余興國2，翁曉紅1
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邵永健1，郁文1，陳宗平2，余興國2，翁曉紅1（1 蘇州科技學(xué)院， 蘇州 215011； 2 廣西大學(xué)， 南寧530004）［摘要］為研究實腹式型鋼混凝土梁在扭矩作用下的受力性能，進行了6根不同參數(shù)實腹式型鋼混凝土梁和1根鋼筋混凝土梁的純扭試驗。試驗結(jié)果表明：實腹式型鋼混凝土受扭構(gòu)件與鋼筋混凝土受扭構(gòu)件的開裂機會相等，可以忽略型鋼對開裂扭矩的影響；但型鋼對極限扭矩有大幅提高作用，并有效改善了構(gòu)件的延性；減小箍筋間距和增大配鋼率可以提高型鋼混凝土構(gòu)件的受扭承載力。通過分析提出了型鋼混凝土純扭構(gòu)件開裂扭矩和極限扭矩的計算公式，計算結(jié)果與試驗結(jié)果吻合較好。［關(guān)鍵詞］型鋼混凝土； 受扭構(gòu)件； 開裂扭矩； 極限扭矩中圖分類號：TU317+.2 文獻標識碼：A 文章編號：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*國家自然科學(xué)基金項目（51078249）。參考文獻［1］趙鴻鐵.組合結(jié)構(gòu)設(shè)計原理［M］.北京：高等教育出版社,2005.［2］范濤. 淺述型鋼混凝土結(jié)構(gòu)的特點及應(yīng)用［J］. 四川建筑科學(xué)研究,2004,30(4):38-39.［3］聶建國,唐亮,魏茂林. 鋼-混凝土組合梁扭轉(zhuǎn)的組合作用分析［J］.工業(yè)建筑,2008,38(3):1-4.［4］傅傳國, 李玉瑩, 孫曉波，等. 預(yù)應(yīng)力及非預(yù)應(yīng)力型鋼混凝土框架受力及抗震性能試驗研究［J］.建筑結(jié)構(gòu)學(xué)報,2010,31(8):15-21.［5］張根俞. 型鋼混凝土梁受扭性能的試驗研究及理論分析［D］. 南京：東南大學(xué),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混凝土結(jié)構(gòu)設(shè)計規(guī)范 ［S］.北京:中國建筑工業(yè)出版社,2011.
