| 钢板-混凝土组合加固矩形梁的抗弯性能试验 |
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| 引用本文： | 王春生,袁卓亚,高珊,郭晓宇,冯林军.钢板-混凝土组合加固矩形梁的抗弯性能试验[J].中国公路学报,2011(5). |
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| 作者姓名： | 王春生 袁卓亚 高珊 郭晓宇 冯林军 |
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| 作者单位： | 长安大学陕西省公路桥梁与隧道重点实验室;西安公路研究院; |
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| 基金项目： | 国家西部交通建设科技项目(20113184901030,20113185191410); 陕西省交通科技项目(07-03K) |
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| 摘 要： | 为了研究不同设计参数与加固构造对钢板-混凝土组合加固梁抗弯性能的影响,对4根钢板-混凝土组合加固矩形钢筋混凝土梁进行了试验研究及数值与理论分析。试件测量内容主要有荷载、挠度、应变、滑移、裂缝的发生以及发展状况等;然后采用有限元软件ANSYS对试验梁加固后的抗弯性能进行了数值模拟,并依据试验梁达到极限抗弯承载能力时的塑性破坏特征,建立了承载力理论简化计算公式。试验结果表明:钢板-混凝土组合加固可显著提高原梁的极限承载力;植筋间距对加固梁的承载力、新老混凝土界面纵向相对滑移具有显著影响,植筋间距越大则承载力越小,且界面出现纵向相对滑移的荷载值越小;剪跨比对试验梁的破坏形态、极限承载力、界面纵向相对滑移、结构延性均具有显著影响。数值与理论分析结果表明:数值模型能较好模拟试验梁发生弯曲破坏时的受力性能,而对界面滑移与剥离破坏的模拟尚存在不足;理论计算值与试验值在塑性弯曲破坏时吻合较好,脆性剥离破坏时相差较大。
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| 关 键 词： | 桥梁工程 钢板-混凝土组合加固 抗弯性能试验 植筋间距 承载力 滑移 脆性剥离破坏 |
Flexural Behavior Test of Rectangular Reinforced Concrete Beams of Steel Plate-concrete Composite Strengthening |
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| WANG Chun-sheng,YUAN Zhuo-ya,GAO Shan,GUO Xiao-yu,FENG Lin-jun.Flexural Behavior Test of Rectangular Reinforced Concrete Beams of Steel Plate-concrete Composite Strengthening[J].China Journal of Highway and Transport,2011(5). |
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| Authors: | WANG Chun-sheng YUAN Zhuo-ya GAO Shan GUO Xiao-yu FENG Lin-jun |
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| Institution: | WANG Chun-sheng1,YUAN Zhuo-ya2,GAO Shan1,GUO Xiao-yu1,FENG Lin-jun1(1.Key Laboratory for Highway Bridge and Tunnel of Shaanxi Province,Chang'an University,Xi'an 710064,Shaanxi,China,2.Xi'an Highway Institute,Xi'an 710054,China) |
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| Abstract: | In order to study the influence of different design parameters and reinforced configuration on flexural behavior of reinforced concrete,model test,numerical and theoretical analysis of four rectangular reinforced concrete beams of steel plate-concrete composite strengthening(SPCCS) were investigated.The applied load,deflection,strains,slip and crack initiation and propagation regularity were measured.The flexural behavior of SPCCS beam was simulated by the finite element software ANSYS.According to plastic ... |
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| Keywords: | bridge engineering steel plate-concrete composite strengthening flexural behavior test planting bar spacing load carrying capacity slip brittle debonding failure |
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