典型江南传统木构建筑的构件重要性分析方法
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摘要
以江南典型宋元木构建筑(宁波保国寺大殿)和江南典型明清木构建筑(甘熙故居津逮楼)为研究对象,基于能量方法,采用改变后结构整体应变能的单位体积改变率作为构件重要性的评价指标,运用有限元软件ANSYS开发基于生死单元法和改变弹性模量法的构件重要性评价程序.通过对保国寺大殿和津逮楼的单榀框架和整体框架在竖向荷载作用下的结构构件重要性的计算分析,得到构件的重要性系数和重要性排序,并指出这两个典型构架体系的江南传统木构建筑的关键构件.结果表明:改变弹性模量法更适用于江南传统木构建筑结构构件的重要性分析.
A typical traditional timber building(Baoguo Temple in Ningbo)built in the Song and Yuan dynasties and a typical traditional timber building(Jindai Building in Ganxi′s former residence)built in the Ming and Qing dynasties were taken as the examples,based on energy method,the change of unit volume towards the strain energy of the whole structure after altering component attributes was employed as the component importance evaluation index,the finite element software of ANSYS was used to assess the component importance of these two traditional timber buildings with the birth-death element method and the altering elastic modulus method.Through the component importance analysis of the single frame and the whole frame under the vertical loads,the component importance coefficient and the sorting results of these two traditional timber buildings were obtained,the key components of these two traditional timber buildings were pointed out.The results show that the altering elastic modulus method is more suitable for the calculation and analysis of component importance of traditional timber buildings.
A typical traditional timber building(Baoguo Temple in Ningbo)built in the Song and Yuan dynasties and a typical traditional timber building(Jindai Building in Ganxi′s former residence)built in the Ming and Qing dynasties were taken as the examples,based on energy method,the change of unit volume towards the strain energy of the whole structure after altering component attributes was employed as the component importance evaluation index,the finite element software of ANSYS was used to assess the component importance of these two traditional timber buildings with the birth-death element method and the altering elastic modulus method.Through the component importance analysis of the single frame and the whole frame under the vertical loads,the component importance coefficient and the sorting results of these two traditional timber buildings were obtained,the key components of these two traditional timber buildings were pointed out.The results show that the altering elastic modulus method is more suitable for the calculation and analysis of component importance of traditional timber buildings.
引文
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[2]林旭川,叶列平.基于构件重要性指标的RC框架结构抗震优化设计研究[J].建筑结构学报,2012,33(6):16-21.DOI:10.14006/j.jzjgxb.2012.06.011.
[3]柳承茂,刘西拉.结构安全性综合评估方法的研究[J].四川建筑科学研究,2004,30(4):46-48.
[4]柳承茂,刘西拉.基于刚度的构件重要性评估及其与冗余度的关系[J].上海交通大学学报,2005,39(5):746-750.DOI:10.16183/j.cnki.jsjtu.2005.05.019.
[5] JAHAN A,MUSTAPHA F,SAPUAN S M,et al.A framework for weighting of criteria in ranking stage of material selection process[J].The International Journal of Advanced Manufacturing Technology,2012,58(1):411-420.DOI:10.1007/s00170-011-3366-7.
[6] NAFDAY A M.System safety performance metrics for skeletal structures[J].Journal of Structural Engineering,2008,134(3):499-504.DOI:10.1061/(ASCE)0733-9445(2008)134:3(499).
[7] ZHU Lihua,WANG Ningjuan,DAI Jun.Evaluation on element importance based on objective weighting method[J].Journal of Architecture and Civil Engineering,2015,34(2):556-563.DOI:10.1007/s11144-007-5156-7.
[8]叶列平,林旭川,曲哲,等.基于广义结构刚度的构件重要性评价方法[J].建筑科学与工程学报,2010,27(1):1-6.
[9]张松.改进的统计矩点估计法及其在构件重要性分析中的应用[D].重庆:重庆大学,2012.
[10]朱丽华,王宁娟,戴军.基于客观赋权法的构件重要性评估[J].建筑科学与工程学报,2015(4):46-52.
[11] MAZARS J.Structural reliability[J].Journal of High Pressure Institute of Japan,2009,17(14):257.DOI:10.1002/9780470611708.
[12] HOSEYNI S M,SHAKOURI M.Verifying the effect of element birth and death technique on stress distribution in cracked areas[J].Journal of Automotive and Applied Mechanics,2015,3(2):13-16.
[13] WANG Duodian,QIU Guoqing.The wartime bridge reliability evaluation model based on birth-and-death process[J].American Journal of Computational Mathematics,2011,1(4):281-284.DOI:10.4236/ajcm.2011.14034.
[14]郑江,葛鸿鹏,王先铁,等.局部位形约束生死单元法及其在施工力学分析中的应用[J].建筑结构学报,2012,33(8):101-108.DOI:10.14006/j.jzjgxb.2012.08.001.
[15]卢啸,陆新征,张劲泉,等.某石拱桥连续倒塌模拟及构件重要性评价[J].兰州交通大学学报,2010,29(6):25-30.DOI:10.3969/j.issn.1001-4373.2010.06.006.
[16]韩宜丹,淳庆.宁波保国寺大殿风振性能研究[J].文物保护与考古科学,2017,29(6):84-94.
[17]汪兴毅,王建国.徽州木结构古民居营造合理性的理论分析[J].合肥工业大学学报,2011,34(9):1375-1380.DOI:10.3969/j.issn.1003-5060.2011.09.023.
[18]淳庆,吕伟,王建国,等.江浙地区抬梁和穿斗木构体系典型榫卯节点受力性能[J].东南大学学报(自然科学版),2015,45(1):151-158.DOI:10.3969/j.issn.1001-0505.2015.01.02.
[19]淳庆,潘建伍,韩宜丹.江南地区传统木构建筑半榫节点受力性能研究[J].湖南大学学报(自然科学版),2016,43(1):124-131.DOI:10.3969/j.issn.1674-2974.2016.01.017.
[20] CHUN Qing,HAN Yidan,MENG Zhe.Mechanical properties of monodirectional gutou mortise-tenon joints of the traditional timber buildings in the Yangtze River region[J].Journal of Southeast University:English Edition,2016,32(4):457-463.DOI:10.3969/j.issn.1003-7985.2016.04.011.