| HPFL加固RC梁在不同高温下的极限荷载试验研究 |
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| 引用本文： | 尚守平,罗杰,陈大川.HPFL加固RC梁在不同高温下的极限荷载试验研究[J].湖南大学学报(自然科学版),2010,37(1). |
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| 作者姓名： | 尚守平 罗杰 陈大川 |
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| 作者单位： | 1. 湖南大学,土木工程学院,湖南,长沙,410082
2. 湖南省第二工程有限公司,湖南,长沙,410015 |
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| 基金项目： | 湖南省科技厅科技计划重点资助项目(06sk4057);;湖南省自然科学基金资助项目(20063137426) |
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| 摘 要： | 为研究HPFL(High-performance ferrocement laminate)加固RC梁的极限荷载与温度变化之间的关系,对4根三面U形加固(在梁的受拉面和侧面进行加固)RC梁通过自行研制的高温试验炉在常温(20℃),400℃,600℃和800℃温度条件下分别进行恒温加载试验,研究了使用这种技术加固的RC梁的极限荷载与温度之间的关系,并比较了它们的挠度和破坏形式.通过与常温下的对比梁相比,HPFL加固的RC梁的极限荷载随着温度的增加而减小,加固梁破坏时的挠度随着温度增加而增大,且推导出了HPFL加固RC梁的极限荷载与温度之间的关系.
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| 关 键 词： | 高性能复合砂浆 钢筋混凝土梁 温度 极限荷载 |
Experimental Investigation of the Ultimate Load of RC Beam Reinforced with High-performance Ferrocement Laminate under Different High Temperature |
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| SHANG Shou-ping,LUO Jie,CHEN Da-chuan.Experimental Investigation of the Ultimate Load of RC Beam Reinforced with High-performance Ferrocement Laminate under Different High Temperature[J].Journal of Hunan University(Naturnal Science),2010,37(1). |
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| Authors: | SHANG Shou-ping LUO Jie CHEN Da-chuan |
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| Institution: | 1.College of Civil Engineering;Hunan Univ;Changsha;Hunan 410082;China;2.Hunan Provincial Construction Engineering Group Corporation;Hunan 410015;China |
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| Abstract: | Loading under constant temperature was done on 4 RC beams strengthened with U-shape ferrocement (ferrocement was put onto the bottom face and two profile faces) at normal temperature(20 ℃), 400 ℃, 600 ℃, 800 ℃ for the purpose to study the relationship between the ultimate load of RC beams strengthened with HPFL (High-performance ferrocement laminate) and the variation of temperature. The deflection and the collapse behavior were also observed. It was found that the ultimate load of RC beams strengthened with HPFL decreased with the rise of temperature. The relation between the ultimate load of RC beams strengthened with HPFL and the temperature was deduced. |
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| Keywords: | high-performance ferrocement laminate (HPFL) RC beam temperature ultimate load |
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