现代木结构在汶川地震灾后重建中的应用及国产木剪力墙抗震性能研究
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摘要
现代木结构具有低碳节能、施工快捷、抗震性能好的优点,汶川地震灾后重建中对现代木结构进行了推广应用。汶川地震灾后重建中,分别在向峨小学、绵阳及青川地区进行了试点,应用的结构形式包含了轻型木结构及框架式重型木结构,这些建筑造价适中,修建快速,体现了较好的适用性;为了解决灾后重建中木结构建筑国产化率低的问题,对国产轻型木结构剪力墙替代产品的抗震性能进行了试验研究,采用ASTM E-564静力单调加载制度对国产胶合板、国产OSB板各3种板厚的剪力墙进行了试验,得出国产木剪力墙的延性系数在4.0～7.1之间,抗剪强度、极限承载力等指标与进口板材剪力墙相当。介绍了现代木结构的在灾后重建中的使用经验及国产木剪力墙的抗震性能研究结果,对现代木结构在国内的应用有一定的借鉴作用。
Modern timber structure have the advantages of low carbon,energy saving,fast construction and good seismic performance.During the reconstruction of Wenchuan earthquake process,light frame wood constructions and heavy timber structures were used in Xiang’e elementary school,Mianyang Special Education School,Bei-chuan Leigu Town Central Elderly Care Centre and Qingchuan region.In order to solve the problem of low import substitution rate,experimental study were carried out to investigate the seismic performance of wood shear walls fab-ricated using Chinese wood based panels,monotonic loading protocol based on ASTM E-564 test standard was a-dapted to test the total of 15 walls with 3 different panel thickness,and the result suggested that these walls exhibit equivalent seismic performance with walls fabricated using imported wood panels,ductility ratio range from 4.1 to 7.0.The application of modern timber structure in post disaster reconstruction of Wenchuan earthquake was intro-duced,and the seismic performance of wood shear walls fabricated using Chinese wood based panels was also intro-duced,which may give reference for the promoting of the application of timber structure in china.
Modern timber structure have the advantages of low carbon,energy saving,fast construction and good seismic performance.During the reconstruction of Wenchuan earthquake process,light frame wood constructions and heavy timber structures were used in Xiang’e elementary school,Mianyang Special Education School,Bei-chuan Leigu Town Central Elderly Care Centre and Qingchuan region.In order to solve the problem of low import substitution rate,experimental study were carried out to investigate the seismic performance of wood shear walls fab-ricated using Chinese wood based panels,monotonic loading protocol based on ASTM E-564 test standard was a-dapted to test the total of 15 walls with 3 different panel thickness,and the result suggested that these walls exhibit equivalent seismic performance with walls fabricated using imported wood panels,ductility ratio range from 4.1 to 7.0.The application of modern timber structure in post disaster reconstruction of Wenchuan earthquake was intro-duced,and the seismic performance of wood shear walls fabricated using Chinese wood based panels was also intro-duced,which may give reference for the promoting of the application of timber structure in china.
引文
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[8]ASTM-E564-00E1.Standard practice for static load test forshear resistance of framed walls for buildings[S].Pennsyl-vania,USA:ASTM international,2001.
[9]ASTM-2126-09.Standard test methods for cyclic(Re-versed)load test for shear resistance of vertical elements ofthe lateral force resisting systems for buildings[S].Penn-sylvania,USA:ASTM international,2001.
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[15]Chen H,Ni C,Lv X L.Performance of perforated wood-frame shear walls with transverse walls and vertical load[J].China Civil Engineering Journal,2006,39(12):33-40.[程海江,倪春,吕西林.有翼缘和竖向荷载的带洞口木框架剪力墙的试验研究[J].土木工程学报,2006,39(12):33-40.]
[2]Yang Zhugui,Xun Yi,Liu Shuo.Application of wood-structured building in the post-disaster reconstruction[J].Journal of Sichuan University:Engineering Science Edition,2009,41(3):29-31.[杨祖贵,荀毅,刘硕.木结构建筑在灾后重建中的应用[J].四川大学学报:工程科学版,2009,41(3):29-31.]
[3]Chen Hai Jiang.Seismic performance of light frame woodcnstruction[D].Shanghai:Tongji University,2007.[程海江.轻型木结构房屋抗震性能研究[D].上海:同济大学,2007.]
[4]Xu Xiaoliang,Ma Renle,He Minjuan.Analysis of lightwood truss test and bearing capality[J].Special Structure,2009,27(1):35-41.[许晓梁,马人乐,何敏娟.轻型木桁架静力试验及承载能力分析[J].特种结构,2009,27(1):35-41.]
[5]Huang Hao.Three dimensional modeling and system effectsanalysis of wood truss assemblies[D].Shanghai:Tongji U-niversity2,009.[黄浩.轻型木桁架三维数值模拟及系统效应研究[D].上海:同济大学2,009.]
[6]China Forest Society.Output of Chinese wood based panles[J].China Wood Based Panels,2009,12(7):42.[中国林学会.2008年我国人造板产量[J].中国人造板,2009,12(7):42.]
[7]Ministry of Construction P.R.China.Code for design of tim-ber structures[S].Beijing:China Architecture&BuildingPress2,003.[中华人民共和国建设部.GB 50005-2003木结构设计规范[S].北京:中国建筑工业出版社,2003.]
[8]ASTM-E564-00E1.Standard practice for static load test forshear resistance of framed walls for buildings[S].Pennsyl-vania,USA:ASTM international,2001.
[9]ASTM-2126-09.Standard test methods for cyclic(Re-versed)load test for shear resistance of vertical elements ofthe lateral force resisting systems for buildings[S].Penn-sylvania,USA:ASTM international,2001.
[10]Toothman A J.Monotonic and cyclic performance of light-framed shear walls with various sheathing materials[D].Blacksburg,Virginia:Virginia Polytechnic Institute andState University,2003.
[11]Price E W,Gromala D S.Racking strength of wallssheathed with structural flakeboards made from southern spe-cies[J].Forest Products Journal,1980,30(12):19-23.
[12]Griffiths D R.Determining the racking resistance of timberframed walls[C]//Proceedings of the Pacific Timber Engi-neering Conference,Auckland,New Zealand.1984(1):504-512.
[13]Dolan J D.The dynamic response of timber shear wall[D].Vancouver,British Columbia:University of British Colum-bia,1989.
[14]Yasumura M.Mechanical properties of wood-framed shearwalls subjected to reversed cyclic lateral loading[C]//Inter-national Council for Building Research Studies and Docu-mentation,Working Commission W18-Timber Structures.Ahus,Sweden,1992.
[15]Chen H,Ni C,Lv X L.Performance of perforated wood-frame shear walls with transverse walls and vertical load[J].China Civil Engineering Journal,2006,39(12):33-40.[程海江,倪春,吕西林.有翼缘和竖向荷载的带洞口木框架剪力墙的试验研究[J].土木工程学报,2006,39(12):33-40.]
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