全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2012 

刚结点转变为铰结点后内力重分布的简捷计算法

DOI: 10.6052/j.issn.1000-4750.2010.08.0652, PP. 52-57

Keywords: 刚架结构,内力重分布,间接作用,结点约束,传递规律

Full-Text   Cite this paper   Add to My Lib

Abstract:

基于最小势能原理,建立了刚架结构的间接荷载效应矩阵。将间接荷载效应矩阵转化为约束矩阵后,根据约束矩阵的性质,推导了刚结点转变为铰结点时约束矩阵自身的传递规律。将约束矩阵中导出的重分布弯矩向量与初始弯矩向量进行叠加,即可得到新刚架结构的内力。因为避免了刚度矩阵的再次形成与分解、计算结点位移等中间过程,所以使计算量大幅度减少。算例表明该文提出的简洁方法是正确、可靠和有效的。

References

[1]  贡金鑫, 魏巍巍. 工程结构可靠性设计原理[M]. 北京: 机械工业出版社, 2007. Gong Jinxin, Wei Weiwei. The principle of engineering structural reliability design [M]. Beijing: China Machine Press, 2007. (in Chinese)
[2]  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]. 交通大学学报, 2005, 39(5): 746― 750. Liu Chengmao, Liu Xila. Stiffness based evaluation of component importance and its relationship with redundancy [J]. Journal of Shanghai Jiaotong University, 2005, 39(5): 746―750. (in Chinese)
[3]  高扬, 刘西拉. 结构鲁棒性评价中的构件重要性系数[J]. 岩石力学与工程学报, 2008, 27(12): 2575―2584. Gao Yang, Liu Xila. Importance coefficients of components in evaluation of structure robustness [J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(12): 2575―2584. (in Chinese)
[4]  Jitendra Agarwal, David Blockley, Norman Woodman. Vulnerability of 3-dimensional trusses [J]. Structural Safety, 2001, 23(3): 203―220.
[5]  Jitendra Agarwal, David Blockley, Norman Woodman. Vulnerability of structural systems [J]. Structural Safety, 2003, 25(3): 263―286.
[6]  Kou Xinjian, Chen Qi, Song Jimian. Reliability Estimation Involving Indirect Load Effects [C]// Katafygiotis L S, Zhang L M, Tang W H, Cheung M M. Structural Reliability and Its Applications. Hong Kong, China: Proc. 4th Asian-Pacific Symposium. 2008: 137― 140.
[7]  周岱, 董石麟, 赵阳. 杆件撤除对空间网格结构影响 的实用计算法[J]. 建筑结构学报, 1997, 18(1): 12―17. Zhou Dai, Dong Shilin, Zhao Yang. A simplified method for calculating internal force distribution of spatial grid structures due to the removal of a member [J]. Journal of Building Structures, 1997, 18(1): 12―17. (in Chinese)
[8]  董石麟, 袁行飞, 朱忠义. 杆件去除与内力变更时空 间网架结构的简捷计算法[J]. 力学季刊, 2000, 21(1): 8―15. Dong Shilin, Yuan Xingfei, Zhu Zhongyi. A simplified method for analysis of space grid structures due to the removal of members or modification of members internal force [J]. Chinese Quarterly of Mechanics, 2000, 21(1): 8―15. (in Chinese)
[9]  Chen Qi, Kou Xinjian, Zhang Yanmeng. Internal force and deformation matrixes and their applications in load path [J]. Journal of Zhejiang University-Science A (Applied Physics & Engingeering), 2010, 11(8): 563― 570.
[10]  刘振奎, 余云燕. 结构杆件撤除后的简化分析法──迭 代法[J]. 兰州铁道学院学报, 1999, 18(3): 30―33. Liu Zhenkui, Yu Yunyan. A simplified analysis method of structure due to the removal of members ─ the iterative method [J]. Journal of Lanzhou Railway Institute, 1999, 18(3): 30―33. (in Chinese)
[11]  汪梦甫, 周锡元. 杆件修改与去除及内力变更时杆系 结构分析的矩阵力法[J]. 计算力学学报, 2003, 20(1): 59―63. Wang Mengfu, Zhou Xiyuan. A matrix force method for analysis of member system structures due to the removal of members or modification of members cross-section dimensions and internal force [J]. Chinese Journal of Computational Mechanics, 2003, 20(1): 59―63. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133