OSB组合异型短柱轴压试验研究
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摘要
为研究定向结构刨花板(Oriented Strand Board,OSB)组合而成的异型短柱在轴压条件下的极限承载力及破坏特征,设计9个不同截面类型及螺钉间距的短柱试件以及5块同尺寸OSB板件,通过静力加载试验对其承载力大小、变形能力和破坏形态进行研究。根据试验结果,对不同类型、不同钉距短柱的破坏机理进行分析,提出基于组合系数和异型系数修正的短柱极限承载力公式,建立短柱极限承载力与短柱类型、钉距、高厚比、板材弹性模量、泊松比及板材长宽厚之间的关系。结果表明:随着钉距的减小,短柱承载力得到提高而延性随之降低,短柱破坏由中部挠曲破坏转变为端部剪切破坏;提出的短柱极限承载力公式的计算值与试验值符合较好,先求短柱组成板件的承载力再用组合系数及异型系数修正来得到短柱最终承载力的方案可行。
In order to study the ultimate bearing capacity and failure characteristics of special-shaped short columns composed of Oriented Strand Board( OSB) under axial compression,nine short column specimens with different section types and screw spacing and five OSB specimens of the same size were designed. The bearing capacity,deformation capacity and failure mode were studied by static loading test. According to the test results,the failure mechanism of short columns with different types and different nail spacing was analyzed,and the formula of ultimate bearing capacity of short columns modified by combination coefficient and special-shaped coefficient was proposed. The relationship between the ultimate bearing capacity of short columns and the types of short columns,nail spacing,height-thickness ratio,elastic modulus,Poisson's ratio of plates,length and width of plates was established. The results showed that with the decrease of nail spacing,the bearing capacity of short columns increased and ductility decreased,and the failure of short columns changed from flexural failure in the middle to collapse failure in the end. It was feasible to get the ultimate bearing capacity of short columns.
In order to study the ultimate bearing capacity and failure characteristics of special-shaped short columns composed of Oriented Strand Board( OSB) under axial compression,nine short column specimens with different section types and screw spacing and five OSB specimens of the same size were designed. The bearing capacity,deformation capacity and failure mode were studied by static loading test. According to the test results,the failure mechanism of short columns with different types and different nail spacing was analyzed,and the formula of ultimate bearing capacity of short columns modified by combination coefficient and special-shaped coefficient was proposed. The relationship between the ultimate bearing capacity of short columns and the types of short columns,nail spacing,height-thickness ratio,elastic modulus,Poisson's ratio of plates,length and width of plates was established. The results showed that with the decrease of nail spacing,the bearing capacity of short columns increased and ductility decreased,and the failure of short columns changed from flexural failure in the middle to collapse failure in the end. It was feasible to get the ultimate bearing capacity of short columns.
引文
[1]刘守华.定向结构刨花板(OSB)发展现状和趋势[J].木材工业,2016,30(2):25-28.LIU S H.Development status and trend of OSB[J].Wood Industry,2016,30(2):25-28.
[2]郑忠福,俞艳,林上禄.利用OSB板生产竹木复合集装箱底板探讨[J].林业机械与木工设备,2016,44(10):29-32.ZHENG Z F,YU Y,LIN S L.Discussion about the use of OSBboards to produce bamboo/wood composite container floors[J].Forestry Machinery&Woodworking Equipment,2016,44(10):29-32.
[3]梅长彤,雍宬.我国定向刨花板工业发展历史、现状和机遇[J].中国人造板,2016,23(3):6-9.MEI C T,YONG Y.History,present situation and opportunities of development of Orienteering particleboard industry in China[J].China Wood-based Panels,2016,23(3):6-9.
[4]张方文,于文吉.世界定向刨花板发展现状及最新市场情况[J].林产工业,2016,43(1):15-18.ZHANG F W,YU W J.Development status and latest market situation of world oriented particleboard[J].Forestry Industry,2016,43(1):15-18.
[5]龚蒙,李玲.定向刨花板在轻型木结构建筑领域的应用:研究现状和前景展望[J].国际木业,2014,44(9):6-14.GONG M,LI L.Application of oriented particleboard in light wood structure architecture:current situation and prospect[J].International Wood Industry,2014,44(9):6-14.
[6]李元齐,马荣奎,何慧文.冷弯薄壁型钢与结构用OSB板自攻螺钉连接性能试验研究[J].建筑结构学报,2014,35(5):48-56.LI Y Q,MA R K,HE H W.Experimental study on self-tapping screw connection between cold-formed thin-walled steel and OSBplate for structure[J].Journal of Architectural Structures,2014,35(5):48-56.
[7]郭鹏,何保康,周天华,等.冷弯型钢骨架墙体受剪承载力计算方法研究[J].建筑结构学报,2010,31(1):9-15.GUO P,HE B K,ZHOU T H,et al.Study on calculation method of shear capacity of cold-formed steel skeleton wall[J].Journal of Architectural Structure,2010,31(1):9-15.
[8]AISI.North American standard for cold-formed steel framingfloor and roof system design:AISI S210-07[S].2007 ed.Washington DC:American Iron and Steel Institute,2007.
[9]石宇,周绪红,宋凯,等.冷弯薄壁型钢梁-OSB板组合楼盖的抗弯刚度研究[J].建筑科学与工程学报,2015,32(6):50-57.SHI Y,ZHOU X H,SONG K,et al.Study on flexural rigidity of cold-formed thin-walled steel beam-OSB composite floor[J].Journal of Architectural Science and Engineering,2015,32(6):50-57.
[10]周绪红,李喆,王瑞成,等.冷弯薄壁型钢梁-OSB板组合楼盖的受弯承载力研究[J].土木工程学报,2013,46(9):1-11.ZHOU X H,LI Z,WANG R C,et al.Study on flexural capacity of cold-formed thin-walled steel beam-OSB composite floor[J].Journal of Civil Engineering,2013,46(9):1-11.
[11]滕学锋,曹宝珠,许超,等.冷弯薄壁型钢-OSB板楼盖的试验研究[J].吉林建筑工程学院学报,2009,26(2):1-5.TENG X F,CAO B Z,XU C.Experimental study on coldformed thin-walled steel-OSB slab floor[J].Journal of Jilin Institute of Architectural Engineering,2009,26(2):1-5.
[12]黄浩,何敏娟,周楠楠,等.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[J].四川大学学报(工程科学版),2010,42(S1):132-139.HUANG H,HE M J,ZHOU N N,et al.Application of modern wood structure in post-Wenchuan earthquake reconstruction and seismic performance of domestic wood shear walls[J].Journal of Sichuan University(Engineering Science Edition),2010,42(S1):132-139.
[13]王滋,王丽,武国芳,等.国产落叶松规格材木框架墙体抗剪性能研究[J].建筑材料学报,2017,20(5):758-764.WANG Z,WANG L,WU G F,et al.Study on shear resistance of timber frame wall with domestic Larch specifications[J].Journal of Building Materials,2017,20(5):758-764.
[14]熊海贝,康加华,吕西林.木质组合梁抗弯性能试验[J].同济大学学报(自然科学版),2012,40(4):522-528.XIONG H B,KANG J H,LV X L.Experimental study on flexural behavior of wood composite beams[J].Journal of Tongji University(Natural Science Edition),2012,40(4):522-528.
[15]ISLAM M S,SHAHNEWAZ M,ALAM M S.Structural capacity of timber I-joists with flange notch:experimental evaluation[J].Construction and Building Materials,2015,79:290-300.
[16]人造板及饰面人造板理化性能试验方法:GB/T 17657-2013[s].北京:中国建筑工业出版社,2013.Test methods for physical and chemical properties of wood-based panels and veneered panels:GB/T 17657-2013[S].Beijing:China Construction Industry Press,2013.
[17]陈骥.钢结构稳定理论与设计(6版)[M].北京:科学出版社,2014.CHEN J.Theory and design of steel structural stability 6 Edition[M].Beijing:Science Press,2014.
[18]夏茂辉,刘才.应用大挠度薄板功的互等定理求解一对边简支一对边自由矩形板的挠曲方程[J].黑龙江大学自然科学学报,2006,23(3):359-362.XIA M H,LIU C.Using the reciprocal theorem of work a pair of simply supported and free rectangular plates[J].Journal of Natural Science of Heilongjiang University,2006,23(3):359-362.
[2]郑忠福,俞艳,林上禄.利用OSB板生产竹木复合集装箱底板探讨[J].林业机械与木工设备,2016,44(10):29-32.ZHENG Z F,YU Y,LIN S L.Discussion about the use of OSBboards to produce bamboo/wood composite container floors[J].Forestry Machinery&Woodworking Equipment,2016,44(10):29-32.
[3]梅长彤,雍宬.我国定向刨花板工业发展历史、现状和机遇[J].中国人造板,2016,23(3):6-9.MEI C T,YONG Y.History,present situation and opportunities of development of Orienteering particleboard industry in China[J].China Wood-based Panels,2016,23(3):6-9.
[4]张方文,于文吉.世界定向刨花板发展现状及最新市场情况[J].林产工业,2016,43(1):15-18.ZHANG F W,YU W J.Development status and latest market situation of world oriented particleboard[J].Forestry Industry,2016,43(1):15-18.
[5]龚蒙,李玲.定向刨花板在轻型木结构建筑领域的应用:研究现状和前景展望[J].国际木业,2014,44(9):6-14.GONG M,LI L.Application of oriented particleboard in light wood structure architecture:current situation and prospect[J].International Wood Industry,2014,44(9):6-14.
[6]李元齐,马荣奎,何慧文.冷弯薄壁型钢与结构用OSB板自攻螺钉连接性能试验研究[J].建筑结构学报,2014,35(5):48-56.LI Y Q,MA R K,HE H W.Experimental study on self-tapping screw connection between cold-formed thin-walled steel and OSBplate for structure[J].Journal of Architectural Structures,2014,35(5):48-56.
[7]郭鹏,何保康,周天华,等.冷弯型钢骨架墙体受剪承载力计算方法研究[J].建筑结构学报,2010,31(1):9-15.GUO P,HE B K,ZHOU T H,et al.Study on calculation method of shear capacity of cold-formed steel skeleton wall[J].Journal of Architectural Structure,2010,31(1):9-15.
[8]AISI.North American standard for cold-formed steel framingfloor and roof system design:AISI S210-07[S].2007 ed.Washington DC:American Iron and Steel Institute,2007.
[9]石宇,周绪红,宋凯,等.冷弯薄壁型钢梁-OSB板组合楼盖的抗弯刚度研究[J].建筑科学与工程学报,2015,32(6):50-57.SHI Y,ZHOU X H,SONG K,et al.Study on flexural rigidity of cold-formed thin-walled steel beam-OSB composite floor[J].Journal of Architectural Science and Engineering,2015,32(6):50-57.
[10]周绪红,李喆,王瑞成,等.冷弯薄壁型钢梁-OSB板组合楼盖的受弯承载力研究[J].土木工程学报,2013,46(9):1-11.ZHOU X H,LI Z,WANG R C,et al.Study on flexural capacity of cold-formed thin-walled steel beam-OSB composite floor[J].Journal of Civil Engineering,2013,46(9):1-11.
[11]滕学锋,曹宝珠,许超,等.冷弯薄壁型钢-OSB板楼盖的试验研究[J].吉林建筑工程学院学报,2009,26(2):1-5.TENG X F,CAO B Z,XU C.Experimental study on coldformed thin-walled steel-OSB slab floor[J].Journal of Jilin Institute of Architectural Engineering,2009,26(2):1-5.
[12]黄浩,何敏娟,周楠楠,等.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[J].四川大学学报(工程科学版),2010,42(S1):132-139.HUANG H,HE M J,ZHOU N N,et al.Application of modern wood structure in post-Wenchuan earthquake reconstruction and seismic performance of domestic wood shear walls[J].Journal of Sichuan University(Engineering Science Edition),2010,42(S1):132-139.
[13]王滋,王丽,武国芳,等.国产落叶松规格材木框架墙体抗剪性能研究[J].建筑材料学报,2017,20(5):758-764.WANG Z,WANG L,WU G F,et al.Study on shear resistance of timber frame wall with domestic Larch specifications[J].Journal of Building Materials,2017,20(5):758-764.
[14]熊海贝,康加华,吕西林.木质组合梁抗弯性能试验[J].同济大学学报(自然科学版),2012,40(4):522-528.XIONG H B,KANG J H,LV X L.Experimental study on flexural behavior of wood composite beams[J].Journal of Tongji University(Natural Science Edition),2012,40(4):522-528.
[15]ISLAM M S,SHAHNEWAZ M,ALAM M S.Structural capacity of timber I-joists with flange notch:experimental evaluation[J].Construction and Building Materials,2015,79:290-300.
[16]人造板及饰面人造板理化性能试验方法:GB/T 17657-2013[s].北京:中国建筑工业出版社,2013.Test methods for physical and chemical properties of wood-based panels and veneered panels:GB/T 17657-2013[S].Beijing:China Construction Industry Press,2013.
[17]陈骥.钢结构稳定理论与设计(6版)[M].北京:科学出版社,2014.CHEN J.Theory and design of steel structural stability 6 Edition[M].Beijing:Science Press,2014.
[18]夏茂辉,刘才.应用大挠度薄板功的互等定理求解一对边简支一对边自由矩形板的挠曲方程[J].黑龙江大学自然科学学报,2006,23(3):359-362.XIA M H,LIU C.Using the reciprocal theorem of work a pair of simply supported and free rectangular plates[J].Journal of Natural Science of Heilongjiang University,2006,23(3):359-362.