土楼夯土结构受力变形特性的数值模拟
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摘要
以福建永定土楼中的九盛楼(方形)及侨福楼(圆形)为研究对象,采用ANSYS有限元软件,对土楼夯土结构建立整体模型,并通过数值模拟对两种典型的土楼进行对比分析.结果表明:夯土墙体的最大应力在材料实测的峰值应力以下,其结构强度符合要求;圆形土楼的位移和应力随厚度均匀分布,夯筑形式更加合理.同时,分析夯土结构的薄弱部位,为土楼的加固和维护提供依据.
Using the finite element software ANSYS,the overall structure models of the Tulou rammed earth square Tulou of Jiu-sheng and Circular Tulou of Qiao-fu in Yongding County were established and simulated numerically.The simulation results show that the maximum stress of rammed earth wall is under the measured stress peak of the material,its structural strength meets the performance requirements;in circular Tulou,the distribution of stress and displacement vary uniformly with the thickness of wall,indicating that the circular form is more reasonable.The weak parts of the Tulou rammed earth structure are point out,to strengthen and maintain of the Tulou.
Using the finite element software ANSYS,the overall structure models of the Tulou rammed earth square Tulou of Jiu-sheng and Circular Tulou of Qiao-fu in Yongding County were established and simulated numerically.The simulation results show that the maximum stress of rammed earth wall is under the measured stress peak of the material,its structural strength meets the performance requirements;in circular Tulou,the distribution of stress and displacement vary uniformly with the thickness of wall,indicating that the circular form is more reasonable.The weak parts of the Tulou rammed earth structure are point out,to strengthen and maintain of the Tulou.
引文
[1]花长城,彭兴黔,吴仁伟,等.福建土楼夯土墙风驱雨侵蚀损伤预测研究[J].自然资源学报,2012,27(6):1068-1074.
[2]阿肯江·托乎提,亓国庆.基于Solid 65和Solid 45有限单元的素夯土墙体数值建模及计算分析[J].新疆大学学报:自然科学版,2008,25(4):492-498.
[3]MANIATIDIS V,WALKER P.Structural capacity of rammed earth in compression[J].Journal of Materials in Civil Engineering,2008,20(3):230-238.
[4]CIANCIO D,GIBBINGS J.Experimental investigation on the compressive strength of cored and molded cement-stabilized rammed earth samples[J].Construction and Building Materials,2012,28(1):294-304.
[5]张琰鑫,童丽萍.夯土住宅结构性能分析及加固方法[J].世界地震工程,2012,28(2):72-78.
[6]姚仰平,张丙印,朱俊高.土的基本特性、本构关系及数值模拟研究综述[J].土木工程学报,2012,45(3):127-150.
[7]BUI Q B,MOREL J C.Assessing the anisotropy of rammed earth[J].Construction and Building Materials,2009,23(9):3005-3011.
[8]赵杰,邵龙潭.土体结构极限承载力的有限元分析[J].岩石力学与工程学报,2007,26(增刊1):183-189.
[9]BUI Q B,HANS S,MOREL J C,et al.First exploratory study on dynamic characteristics of rammed earth buildings[J].Engineering Structures,2011,33(12):3690-3695.
[10]NOWAMOOZ H,CHAZALLON C.Finite element modelling of a rammed earth wall[J].Construction and Building Materials,2011,25(4):2112-2121.
[11]赵成,阿肯江·托呼提,陈嘉,等.改性土体材料单轴受压本构关系研究[J].新疆大学学报:自然科学版,2010,27(7):123-126.
[12]中华人民共和国住房和城乡建设部.GB 50009-2012建筑结构荷载规范[S].北京:中国建筑工业出版社,2012:14-17.
[2]阿肯江·托乎提,亓国庆.基于Solid 65和Solid 45有限单元的素夯土墙体数值建模及计算分析[J].新疆大学学报:自然科学版,2008,25(4):492-498.
[3]MANIATIDIS V,WALKER P.Structural capacity of rammed earth in compression[J].Journal of Materials in Civil Engineering,2008,20(3):230-238.
[4]CIANCIO D,GIBBINGS J.Experimental investigation on the compressive strength of cored and molded cement-stabilized rammed earth samples[J].Construction and Building Materials,2012,28(1):294-304.
[5]张琰鑫,童丽萍.夯土住宅结构性能分析及加固方法[J].世界地震工程,2012,28(2):72-78.
[6]姚仰平,张丙印,朱俊高.土的基本特性、本构关系及数值模拟研究综述[J].土木工程学报,2012,45(3):127-150.
[7]BUI Q B,MOREL J C.Assessing the anisotropy of rammed earth[J].Construction and Building Materials,2009,23(9):3005-3011.
[8]赵杰,邵龙潭.土体结构极限承载力的有限元分析[J].岩石力学与工程学报,2007,26(增刊1):183-189.
[9]BUI Q B,HANS S,MOREL J C,et al.First exploratory study on dynamic characteristics of rammed earth buildings[J].Engineering Structures,2011,33(12):3690-3695.
[10]NOWAMOOZ H,CHAZALLON C.Finite element modelling of a rammed earth wall[J].Construction and Building Materials,2011,25(4):2112-2121.
[11]赵成,阿肯江·托呼提,陈嘉,等.改性土体材料单轴受压本构关系研究[J].新疆大学学报:自然科学版,2010,27(7):123-126.
[12]中华人民共和国住房和城乡建设部.GB 50009-2012建筑结构荷载规范[S].北京:中国建筑工业出版社,2012:14-17.
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