# [1]赵静,靳慧,宫维佳.含铸钢节点钢结构的随机结构分析[J].东南大学学报(自然科学版),2015,45(6):1124-1129.[doi:10.3969/j.issn.1001-0505.2015.06.018] 　Zhao Jing,Jin Hui,Gong Weijia.Stochastic structural analysis of steel structure containing cast steel nodes[J].Journal of Southeast University (Natural Science Edition),2015,45(6):1124-1129.[doi:10.3969/j.issn.1001-0505.2015.06.018] 点击复制 含铸钢节点钢结构的随机结构分析() 分享到： var jiathis_config = { data_track_clickback: true };

45

2015年第6期

1124-1129

2015-11-20

## 文章信息/Info

Title:
Stochastic structural analysis of steel structure containing cast steel nodes

Author(s):
School of Civil Engineering, Southeast University, Nanjing 210096, China
Jiangsu Key Laboratory of Engineering Mechanics, Southeast University, Nanjing 210096, China

Keywords:

TU323.4
DOI:
10.3969/j.issn.1001-0505.2015.06.018

Abstract:
The random fields of equivalent elastic modulus were used to characterize the randomness of casting defects, and the steel truss structure with cast steel nodes was simulated by probability finite element. The sensitivity of entire structural performance to the dispersion of the material of cast steel nodes and the steel beams and pipes was analyzed. Then, based on the local average theory of random field, a set of random field grid was put forward to describe the characteristics of the probability distribution of the defects along with the change of the spatial position, and the sensitivity of the entire structural performance to every stochastic variable in the dispersed random field was calculated. Finally, the random field grid was again divided and the new random field grid can reflect the spatial importance of the random factor with great reduction of the computational quantity of the structural stochastic finite element. The results show that for the steel truss structure containing cast steel nodes, the sensitivity of the entire structural performance to the elastic modulus of cast steel material is about three times that of the steel tubes. The randomness of cast steel material is an important factor affecting the structural performance. The material in the lower part of the dominant tube located in the tensed zone has more influence on the structural stiffness and stability, and the line-intersecting material has more influence on the structural strength. In the two-scale stochastic finite element analysis, the related area should be focused on when refining the random field grid and establishing the defect’s model.

## 参考文献/References:

[1] 赵才其.南通体育会展中心关键力学问题的理论分析及试验研究[D].南京:东南大学土木工程学院,2009.
[2] Haldimann-Sturm S C, Nussbaumer A. Fatigue design of cast steel nodes in tubular bridge structures [J]. International Journal of Fatigue, 2008, 30(3):528-537.
[3] 靳慧,李菁,李爱群.波浪载荷下海中观光塔铸钢节点疲劳强度验算[J].西南交通大学学报,2010,45(5): 692-697.
Jin Hui, Li Jing, Li Aiqun. Checking calculation of fatigue strength for cast steel joints of offshore tour tower under wave loads [J]. Journal of Southwest Jiaotong University, 2010,45(5): 692-697.(in Chinese)
[4] Jin H, Li J, Mo J, et al. Fatigue of girth butt weld for cast steel node connection in tower structure under wave loadings [J]. The Structural Design of Tall and Special Buildings, 2014, 23(15):1119-1140.
[5] 赵宪忠,沈祖炎,陈以一.建筑用铸钢节点设计的若干关键问题[J].结构工程师,2009,25(4):11-18.
Zhao Xianzhong, Shen Zuyan, Chen Yiyi. Some key techniques for the design of connections of structural steel casting [J]. Structural Engineers, 2009, 25(4):11-18.(in Chinese)
[6] 蔡建国,冯健,顾洪波, 等.大型铸钢节点的工程应用和分析[J].钢结构,2008,23(4):14-17.
Cai Jianguo, Feng Jian, Gu Hongbo, et al. Practical application and analysis of complex cast-steel joint [J].Steel Construction, 2008, 23(4):14-17.(in Chinese)
[7] Ma A, Sharp J V. Fatigue design of cast steel nodes in offshore structures based on research data [J].Proceedings of the ICE—Water Maritime and Energy, 1997, 124(2): 112-126.
[8] Hardin R A, Beckermann C. Prediction of the fatigue life of cast steel containing shrinkage porosity[J]. Metallurgical and Materials Transactions A, 2009,40(3): 581-597.
[9] Sigl K M, Hardin R A, Stephens R I, et al. Fatigue of 8630 cast steel in the presence of porosity [J]. International Journal of Cast Metals Research, 2004, 17(3):130-146.
[10] Reh S, Beley J D, Mukherjee S, et al. Probabilistic finite element analysis using ANSYS [J].Structural Safety, 2006,28(1):17-43.
[11] 汤轶群,李兆霞.强载荷下结构动力响应与损伤的跨尺度分析方法[J].振动与冲击,2012,31(23):16-25.
Tang Yiqun, Li Zhaoxia. Damage and dynamic response analysis for structures under strong loads with a stran-scale modeling[J]. Journal of Vibration and Shock, 2012, 31(23):16-25.(in Chinese)
[12] 聂讨东.重庆江北机场铸钢节点可靠性分析与响应面法实现[D].重庆: 重庆大学土木工程学院,2006.
[13] 刘宁,吕泰仁.随机有限元及其工程应用[J].力学进展,1995,25(1): 114-126.
Liu Ning, Lü Tairen. Stochastic finite element and engineering application [J]. Advances in Mechanics, 1995,25(1):114-126.(in Chinese)
[14] 陈虬,刘先斌.随机有限元法及其工程应用[M].成都:西南交通大学出版社,1993:41-55.
[15] Vanmarcke E, Grigoriu M. Stochastic finite element analysis of simple beams [J]. Journal of Engineering Mechanics, 1983,109(5): 1203-1214.

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