| 方钢管混凝土梁受弯力学性能的试验研究 |
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| 引用本文： | 魏华,杨明,王海军.方钢管混凝土梁受弯力学性能的试验研究[J].沈阳工业大学学报,2005,27(6):686-690. |
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| 作者姓名： | 魏华 杨明 王海军 |
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| 作者单位： | 沈阳工业大学,建筑工程学院,沈阳,110023 |
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| 基金项目： | 辽宁省自然科学基金资助项目(2001102032)，教育部留学回国人员科研启动基金资助项目(20046293) |
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| 摘 要： | 介绍了包括中空钢管梁，素混凝土锟管梁及配筋混凝土钢管梁在内共18个试件的纯弯试验.主要试验参数包括混凝土强度、钢管的宽厚比、钢筋配置等.讨论了各种试验参数对极限承载力和延性等力学性能的影响，并陈述了RCFT梁优于CFT梁之处.结果表明，在梁的受拉区配筋可以提高梁的极限承载力，并且可以避免核心混凝土的剪切破坏.与CFT梁相比，RCFT梁的强度、刚度和延性得到改善，对工程有很大意义.
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| 关 键 词： | 配筋方钢管混凝土 纯弯试验 承载力 延性系数 破坏模式 |
| 文章编号： | 1000-1646(2005)06-0686-05 |
| 收稿时间： | 09 6 2005 12:00AM |
| 修稿时间： | 2005年9月6日 |
Experimental investigation on the behaviors of reinforced concrete filled square steel tubular beams |
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| WEI Hua,YANG Ming,WANG Hai-jun.Experimental investigation on the behaviors of reinforced concrete filled square steel tubular beams[J].Journal of Shenyang University of Technology,2005,27(6):686-690. |
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| Authors: | WEI Hua YANG Ming WANG Hai-jun |
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| Affiliation: | School of Architectural Engineering, Shenyang University of Technology, Shenyang 110023, China |
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| Abstract: | Bending test on square beam specimens of hollow steel tube,CFT(concrete filled steel tube) and RCFT(reinforced concrete filled steel tube) were carried out.The main parameters adopted include strength of concrete,width-thickness ratio and arrangement of reinforcing bars.According to the experimental results,the effect of parameters on mechanical performance of RCFT was analyzed;the advantage of RCFT beams over CFT beams was presented in this study.As a result,it is understood that placing steel bar in the tensile area will improve the ultimate bearing capacity of the RCFT beam,and shear failure of filled concrete will be avoided.The strength,stiffness and ductility of RCFT beams are improved especially after the peak of load-displacement curve as compared with CFT beams. |
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| Keywords: | RCFT pure bending test bearing capacity ductility ratio failure mode |
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