中山杉单板缠绕圆管的轴压行为及环刚度研究
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摘要
采用中山杉单板单面涂胶,施胶量为260 g/m~2,以30°的倾角螺旋交错缠绕组坯、加压制备圆管,研究了圆管的轴压行为及环刚度。结果表明:轴压过程中,其破坏形式主要集中在圆管的端头、中部以及单板带拼缝处。单板横纹螺旋缠绕的圆管相对于单板顺纹横纹混合螺旋缠绕和单板顺纹螺旋缠绕的圆管,其端头及单板间接缝处易破坏,单板顺纹螺旋缠绕圆管外层对于端头及单板间接缝处有很好的约束作用。单板顺纹横纹混合螺旋缠绕圆管相对于单板横纹螺旋缠绕和单板顺纹螺旋缠绕的圆管,其轴压性能更好,内径110 mm的单板顺纹横纹混合缠绕圆管的轴压极限荷载可达22.2 k N。圆管的环向抗压能力可用环刚度评价,单板顺纹缠绕圆管的环刚度最大,单板横纹缠绕圆管的环刚度最小。
In this paper,the spiral wound circular pipe of Taxodium hybrid‘zhongshansha'veneer that was solidified by cold pressure gluing was prepared using a self-made veneer winding die. The axial compression behavior of this kind of pipe as a circular pipe column and the ring stiffness performance as a component of fluid conveying pipeline were examined. The aim of this study is to provide guide line for the technical innovation strategy of the wood efficient utilization of Taxodium hybrid‘zhongshansha'plantation and provide the design basis for the application of the Taxodium hybrid‘zhongshansha'veneer spiral wound circular pipe in industry. The pipe was fabricated by spiral winding of Taxodium hybrid‘zhongshansha'veneer with 30° of inclination and different forms of spiral winding using a single hand sizing,the sizing amount was 260 g/m2. The failure modes of the specimen were observed by the axial compression test. The annular compressive capacity of the pipe was evaluated by the ring stiffness. The results showed that,in the process of axial compression,the failure modes were mainly concentrated in the end of the pipe,the middle and the joint between the veneers. Compared with the mixed and creep pipe,the end heads and joint between the veneers of striped spiral were easily to be damaged,and the veneer spiral winding for the pipe and the end of the board between the joints had a good constraint. The axial compression performance of the mixed spiral wound pipe was better than that of the transverse strip and the cross-section. The axial load of the mixed pipe was 22.2 kN. The cyclic compressive capacity of pipe was evaluated by the ring stiffness. The ring stiffness of the cascade pipe was larger than that of the mixed pipe and the transverse pipe,in which the ring stiffness of the striped pipe was the smallest.
In this paper,the spiral wound circular pipe of Taxodium hybrid‘zhongshansha'veneer that was solidified by cold pressure gluing was prepared using a self-made veneer winding die. The axial compression behavior of this kind of pipe as a circular pipe column and the ring stiffness performance as a component of fluid conveying pipeline were examined. The aim of this study is to provide guide line for the technical innovation strategy of the wood efficient utilization of Taxodium hybrid‘zhongshansha'plantation and provide the design basis for the application of the Taxodium hybrid‘zhongshansha'veneer spiral wound circular pipe in industry. The pipe was fabricated by spiral winding of Taxodium hybrid‘zhongshansha'veneer with 30° of inclination and different forms of spiral winding using a single hand sizing,the sizing amount was 260 g/m2. The failure modes of the specimen were observed by the axial compression test. The annular compressive capacity of the pipe was evaluated by the ring stiffness. The results showed that,in the process of axial compression,the failure modes were mainly concentrated in the end of the pipe,the middle and the joint between the veneers. Compared with the mixed and creep pipe,the end heads and joint between the veneers of striped spiral were easily to be damaged,and the veneer spiral winding for the pipe and the end of the board between the joints had a good constraint. The axial compression performance of the mixed spiral wound pipe was better than that of the transverse strip and the cross-section. The axial load of the mixed pipe was 22.2 kN. The cyclic compressive capacity of pipe was evaluated by the ring stiffness. The ring stiffness of the cascade pipe was larger than that of the mixed pipe and the transverse pipe,in which the ring stiffness of the striped pipe was the smallest.
引文
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[11]张雪峰,罗真付,王翔,等.中山杉单板防腐处理对胶合板性能的影响[J].林业科技开发,2012,26(5):123-125.DOI:10.3969/j.issn.1000-8101.2012.05.032.ZHANG X F,LUO Z F,WANG X,et al.Influence of preservative treatment of Taxodium‘Zhongshansha302’veneer on plywood properties[J].China Forestry Science and Technology,2012,26(5):123-125.
[12]彭超义,肖加余,曾竟成.主承力缠绕管件轴压强度实验研究[J].材料科学与工艺,2009,17(5):727-731.PENG C Y,XIAO J Y,ZENG J C.Experimental study on the axial compressive strength of the primary-load bearing wound cylinders[J].Materials Science and Technology,2009,17(5):727-731.
[13]黄绍胤.轴心受压木构件稳定问题的研究报告(Ⅱ)[J].重庆建筑工程学院学报,1986,8(4):36-49.HUANG S Y.A report of experimental research on stability of timber members in axial compression[J].Journal of Chongqing Architecture University,1986,8(4):36-49.
[14]陈迪,熊海贝,刘正虎.现代轻型木结构建筑中组合木柱轴心受压性能研究[J].结构工程师,2011,27(S1):206-211.DOI:10.3969/j.issn.1005-0159.2011.z1.038.CHEN D,XIONG H B,LIU Z H.Experimental research on axial compressive property of built-up columns in modern timber constructions[J].Structural Engineers,2011,27(Supp.1):206-211.
[15]程艾琳,张国军,杨大伟.加筋玻璃钢管道的环刚度分析[J].玻璃钢/复合材料,2015(2):72-74.DOI:10.3969/j.issn.1003-0999.2015.02.015.CHENG A L,ZHANG G J,YANG D W.Analysis on ring stiffness of reinforced FRP pipeline[J].FRP/CM,2015(2):72-74.
[2]HATA T,UMEMURA K,YAMAUCHI H,et al.Design and pilot production of a“spiral-winder”for the manufacture of cylindrical laminated veneer lumber[J].Journal of Wood Science,2001,47(2):115-123.DOI:10.1007/bf00780559.
[3]INABA D,MORITA M,NAKANO H,et al.Continuous manufacture of cylindrical laminated veneer lumber[J].Wood Research:Bulletin of the Wood Research Institute Kyoto University,2003,90:19-20.
[4]SUH J S,KIM J I,HWANG S W,et al.Bonding quality of cylindrical LVL and surface durability by its painting[J].Journal of the Korean Wood Science and Technology,2012,40(6):418-423.DOI:10.5658/WOOD.2012.40.6.418.
[5]YAMAUCHI H,MIURA I,SASAKI T,et al.Manufacturing condition and mechanical properties of cylindrical LVL manufactured by spiral-winding method[J].Journal of the Society of Materials Science,Japan,1998,47(4):350-355.
[6]YAMAUCHI H,KATAYA M,MA L F,et al.Manufacture of cylindrical LVL by spiral-winding method IV-new method of isocyanate resin application using roll paper[J].Mokuzai Gakkaishi,2002,48(6):432-438.
[7]蔡鑫荣.单板层积空心柱结构工艺及性能研究[D].南京:南京林业大学,2014.CAI X R.The study on structural processes and performance of laminated veneer hollow column[D].Nanjing:Nanjing Forestry University,2014.
[8]严晓红,潘彪,施建中,等.海岸防风林中山杉木材生长特性[J].林业科技开发,2010,24(6):72-74.DOI:10.3969/j.issn.1000-8101.2010.06.019.YAN X H,PAN B,SHI J Z,et al.Research on the wood growth characteristics of Taxodium hybrid‘Zhongshansha 302’planted for coastal windbreak[J].China Forestry Science and Technology,2010,24(6):72-74.
[9]虞华强,费本华,赵荣军,等.中山杉和落羽杉木材解剖性质研究[J].林业科学研究,2007,20(2):213-217.DOI:10.13275/j.cnki.lykxyj.2007.02.012.YU H Q,FEI B H,ZHAO R J,et al.Anatomical characteristics of Taxodium‘zhongshansha 302’and Taxodium distichum wood[J].Forest Research,2007,20(2):213-217.
[10]赵荣军,费本华,虞华强,等.中山杉和落羽杉木材物理力学性质比较研究[J].东北林业大学学报,2007,35(2):4-6.DOI:10.13759/j.cnki.dlxb.2007.02.002.ZHAO R J,FEI B H,YU H Q,et al.Physical and mechanical properties of Taxodium‘zhongshansha 302’and Taxodium distichum wood[J].Journal of Northeast Forestry University,2007,35(2):4-6.
[11]张雪峰,罗真付,王翔,等.中山杉单板防腐处理对胶合板性能的影响[J].林业科技开发,2012,26(5):123-125.DOI:10.3969/j.issn.1000-8101.2012.05.032.ZHANG X F,LUO Z F,WANG X,et al.Influence of preservative treatment of Taxodium‘Zhongshansha302’veneer on plywood properties[J].China Forestry Science and Technology,2012,26(5):123-125.
[12]彭超义,肖加余,曾竟成.主承力缠绕管件轴压强度实验研究[J].材料科学与工艺,2009,17(5):727-731.PENG C Y,XIAO J Y,ZENG J C.Experimental study on the axial compressive strength of the primary-load bearing wound cylinders[J].Materials Science and Technology,2009,17(5):727-731.
[13]黄绍胤.轴心受压木构件稳定问题的研究报告(Ⅱ)[J].重庆建筑工程学院学报,1986,8(4):36-49.HUANG S Y.A report of experimental research on stability of timber members in axial compression[J].Journal of Chongqing Architecture University,1986,8(4):36-49.
[14]陈迪,熊海贝,刘正虎.现代轻型木结构建筑中组合木柱轴心受压性能研究[J].结构工程师,2011,27(S1):206-211.DOI:10.3969/j.issn.1005-0159.2011.z1.038.CHEN D,XIONG H B,LIU Z H.Experimental research on axial compressive property of built-up columns in modern timber constructions[J].Structural Engineers,2011,27(Supp.1):206-211.
[15]程艾琳,张国军,杨大伟.加筋玻璃钢管道的环刚度分析[J].玻璃钢/复合材料,2015(2):72-74.DOI:10.3969/j.issn.1003-0999.2015.02.015.CHENG A L,ZHANG G J,YANG D W.Analysis on ring stiffness of reinforced FRP pipeline[J].FRP/CM,2015(2):72-74.