[1] Guo Tong, Li Aiqun, Miao Changqing,. Monte Carlo numerical simulation and its applicationin probability analysis of long span bridges [J]. Journal of Southeast University (English Edition), 2005, 21 (4): 469-473. [doi:10.3969/j.issn.1003-7985.2005.04.019]
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Monte Carlo numerical simulation and its applicationin probability analysis of long span bridges(
)
蒙特卡罗数值模拟及其在大跨桥梁可靠度分析中的应用
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 21
- Issue:
- 2005 4
- Page:
- 469-473
- Research Field:
- Architecture
- Publishing date:
- 2005-12-30
Info
- Title:
- Monte Carlo numerical simulation and its applicationin probability analysis of long span bridges
- 蒙特卡罗数值模拟及其在大跨桥梁可靠度分析中的应用
- Author(s):
- Guo Tong; Li Aiqun; Miao Changqing
- College of Civil Engineering, Southeast University, Nanjing 210096, China
- PACS:
- TU279.7+2
- DOI:
- 10.3969/j.issn.1003-7985.2005.04.019
- Abstract:
- To get the probability of long span bridges under the influence of external random factors, the Monte Carlo method using Latin hypercube sampling is applied.Combined with the condition assessment system on Runyang Suspension Bridge, which is the longest suspension bridge in China, the structural probabilities in normal and damaged situations are calculated with the external random factors considered including environmental temperature, wind load, load of vehicles, etc.The main assessment items contain the maximal vertical displacement of girder, the maximal stress of cables, the maximal horizontal displacement of towers etc.Finally, the probabilities and their cumulative distribution functions are provided.The analysis results can be plotted on line in a clear and vivid way, so the efficiency of assessment is increased and the decision-making of maintenance is more objective and accurate.
- 为了定量地研究大跨桥梁在多种随机因素下的可靠度, 采用了蒙特卡罗法中的拉丁超立方体抽样法, 对润扬悬索桥(中国跨度最大的悬索桥)在温度、风、车辆荷载、车辆冲击等随机变量作用下的结构可靠度进行了计算.通过对大桥在正常运营和损伤状态下的可靠度分析, 获得了大桥主缆应力、吊索应力、桥塔位移以及钢箱梁线形等重要指标的可靠度和累积分布函数, 分析结果形象直观, 提高了评估的效率, 使维护决策的制定更加客观准确.
References:
[1] Rens Kevin L, Nogueira Carnot L, Transue David J.Bridge management and nondestructive evaluation [J].Journal of Performance of Constructed Facilities, 2005, 19(1):3-16.
[2] Bergmeister K, Santa U.Global monitoring concepts for bridges [A].In:Nondestructive Evaluation of Highways, Utilities, and Pipelines IV, Proceedings of SPIE [C].Newport Beach, USA, 2000. 14-25.
[3] Wong K Y, Chan W Y K, Man K L.The use of structural health monitoring system in operation & maintenance of cable supported bridges [A].In:One Day Annual Seminar Structural Symposium 2000 Highway and Railway Structures [C].Hong Kong, 2000.108-133.
[4] Guo Tong, Li Aiqun, Li Zhaoxia, et al. Progress in condition assessment methods for long span bridges [J].Journal of Southeast University (Natural Science Edition), 2004, 34(5):699-704.(in Chinese)
[5] Zhao Guofan, Jin Weiliang, Gong Jinxin.Theories of structural probability [M].Beijing:China Architecture and Building Press, 2000.79-201.(in Chinese)
[6] Kececioglu D.Reliability Engineering Handbook [M].Englewood Cliffs, New Jersey:Prentice-Hall Inc, 1991.83-101.
[7] Li Zhaoxia, Li Aiqun, Tommy Chan, et al.Finite element modeling for health monitoring and condition assessment of long-span bridges [J].Journal of Southeast University (Natural Science Edition), 2003, 33(5):562-572.(in Chinese)
[8] Guo Tong, Li Aiqun.Model updating of long span bridges based on structural sensitivity analysis and the optimization method [A].In:3rd China-Japan-US Symposium on Health Monitoring and Control of Structures [C].Dalian, China, 2004.304-308.
Memo
- Memo:
- Biographies: Guo Tong(1977—), male, doctor;Li Aiqun(corresponding author), male, doctor, professor, aiqunli@public1.ptt.js.cn.