碳纤维加固古建筑木结构榫卯节点承载力计算
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摘要
碳纤维布加固古建筑榫卯节点是一种新型木结构加固方法,本文在榫卯节点试验及受力机理研究基础上,提出了碳纤维加固榫卯节点抗弯承载力计算方法。结合古建筑木结构特点,公式推导考虑了木材老化、尺寸偏差及木材含水率对承载力有影响的因素,使公式更具一般意义。结果表明,计算值与试验值吻合较好,验证了计算方法的正确性和准确性,可为古建筑木结构的维修与加固提供参考。
Mortise-tenon strengthened with CFRP is a new retrofit method in the field of Chinese Ancient Timber Buildings of civil engineering.Based on experimental results and theory analysis of mortise-tenon,the new method is proposed to calculate the Bending Ultimate Strength of Mortise-Tenon Joints Strengthened with CFRP.In the new formula,the factors such as aging of timber,size deviation of timber components and water ratio of timber are involved,and the formula can be used widely.Comparing with experimental data,the calculated results show good agreement and validate the veracity and advantage of the new method,which can be a reference for the strengthening and rehabilitation of the timber structure.
Mortise-tenon strengthened with CFRP is a new retrofit method in the field of Chinese Ancient Timber Buildings of civil engineering.Based on experimental results and theory analysis of mortise-tenon,the new method is proposed to calculate the Bending Ultimate Strength of Mortise-Tenon Joints Strengthened with CFRP.In the new formula,the factors such as aging of timber,size deviation of timber components and water ratio of timber are involved,and the formula can be used widely.Comparing with experimental data,the calculated results show good agreement and validate the veracity and advantage of the new method,which can be a reference for the strengthening and rehabilitation of the timber structure.
引文
[1]杨亚弟,杜景林,李桂荣.古建筑震害特性分析[J].世界地震工程,2000,16(3):12～16Yang Ya-di,Du Jing-lin,Li Gui-rong.Analysis of the Earthquake Disaster Characteristics of Ancient Building Structures[J].World Information on Earthquake Engineering,2000,16(3):12～16(in Chinese)
[2]李铁英.应县木塔现状结构残损要点及机理分析[D].太原:太原理工大学,2004Li Tie-ying.The Main Structural Damages and Damage Mechanism Analysis on Yingxian Wooden Tower[D].Taiyuan:Taiyuan University of Technology,2004(in Chinese)
[3]杨会峰,刘伟庆.FRP增强胶合木梁的受弯性能研究[J]:建筑结构学报,2007,28(1):64～71Yang Hui-feng,Liu Wei-qing.Study on Flexural Behavior of FRP Reinforced Glulam Beams[J]:Journal of Building Structures,2007,28(1):64～71(in Chinese)
[4]吴照华.碳纤维布加固古建筑木梁的性能研究[D].西安:西安建筑科技大学,2007Wu Zhao-hua.Research on the Behavior of Timber Beams Strengthened with CFRP[D].Xi'an:Xi'an University of Architecture and Technology,2007(in Chinese)
[5]徐明刚,邱洪兴.中国古代木结构建筑榫卯节点抗震试验研究[J].建筑结构学报,2010,(S2):345～349Xu Ming-gang,Qiu Hong-xing.Experimental Study on Seismic Behavior of Mortise-tenon Joints in Chinese Ancient Timber Buildings[J].Journal of Building Structures,2010(S2):345～349(in Chinese)
[6]徐明刚,邱洪兴.古建筑木结构榫卯节点抗震试验研究[J].建筑科学,2011(7):56～58Xu Ming-gang,Qiu Hong-xing.Experimental Study on Seismic Behavior of Mortise-Tenon Joints of Ancient Architectures[J].Building Science,2011(7):56～58(in Chinese)
[7]GB50165-92,古建筑木结构维护与加固技术规范[S]GB50165-92,Technical Code for Maintenance and Strengthening of Ancient Timber Buildings[S](in Chinese)
[8]王晓欢.古建筑旧木材材性变化及其无损检测研究[D].呼和浩特:内蒙古农业大学,2006Wang Xiao-huan.Study on the Variety and the NDE of Aged Wood Physical and Mechanical Properties of Ancient Architecture[D].Hohehot:Inner Mongolia Agricultural University,2006(in Chinese)
[9]徐明刚,邱洪兴.古建筑旧木材材料性能试验研究[J].工程抗震与加固改造,2011,33(4):53～55Xu Ming-gang,Qiu Hong-xing.Experimental Study on Properties of Aged Wood of Ancient Architecture[J].Earthquake Resistant Engineering and Retrofitting,2011,33(4):53～55(in Chinese)
[2]李铁英.应县木塔现状结构残损要点及机理分析[D].太原:太原理工大学,2004Li Tie-ying.The Main Structural Damages and Damage Mechanism Analysis on Yingxian Wooden Tower[D].Taiyuan:Taiyuan University of Technology,2004(in Chinese)
[3]杨会峰,刘伟庆.FRP增强胶合木梁的受弯性能研究[J]:建筑结构学报,2007,28(1):64～71Yang Hui-feng,Liu Wei-qing.Study on Flexural Behavior of FRP Reinforced Glulam Beams[J]:Journal of Building Structures,2007,28(1):64～71(in Chinese)
[4]吴照华.碳纤维布加固古建筑木梁的性能研究[D].西安:西安建筑科技大学,2007Wu Zhao-hua.Research on the Behavior of Timber Beams Strengthened with CFRP[D].Xi'an:Xi'an University of Architecture and Technology,2007(in Chinese)
[5]徐明刚,邱洪兴.中国古代木结构建筑榫卯节点抗震试验研究[J].建筑结构学报,2010,(S2):345～349Xu Ming-gang,Qiu Hong-xing.Experimental Study on Seismic Behavior of Mortise-tenon Joints in Chinese Ancient Timber Buildings[J].Journal of Building Structures,2010(S2):345～349(in Chinese)
[6]徐明刚,邱洪兴.古建筑木结构榫卯节点抗震试验研究[J].建筑科学,2011(7):56～58Xu Ming-gang,Qiu Hong-xing.Experimental Study on Seismic Behavior of Mortise-Tenon Joints of Ancient Architectures[J].Building Science,2011(7):56～58(in Chinese)
[7]GB50165-92,古建筑木结构维护与加固技术规范[S]GB50165-92,Technical Code for Maintenance and Strengthening of Ancient Timber Buildings[S](in Chinese)
[8]王晓欢.古建筑旧木材材性变化及其无损检测研究[D].呼和浩特:内蒙古农业大学,2006Wang Xiao-huan.Study on the Variety and the NDE of Aged Wood Physical and Mechanical Properties of Ancient Architecture[D].Hohehot:Inner Mongolia Agricultural University,2006(in Chinese)
[9]徐明刚,邱洪兴.古建筑旧木材材料性能试验研究[J].工程抗震与加固改造,2011,33(4):53～55Xu Ming-gang,Qiu Hong-xing.Experimental Study on Properties of Aged Wood of Ancient Architecture[J].Earthquake Resistant Engineering and Retrofitting,2011,33(4):53～55(in Chinese)
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