A Probability Statistical Analysis Method for Nonuniqueness of Mechanical Parameters Inversion of Roller Compacted Concrete Dam

XIAO Lei; HUANG Yao-ying; WAN Zhi-yong

doi:10.11988/ckyyb.20171497

PDF(2295 KB)

Journal of Changjiang River Scientific Research Institute ›› 2019, Vol. 36 ›› Issue (7) : 41-47. DOI: 10.11988/ckyyb.20171497

ENGINEERING SAFETY AND DISASTER PREVENTION

A Probability Statistical Analysis Method for Nonuniqueness of Mechanical Parameters Inversion of Roller Compacted Concrete Dam

XIAO Lei, HUANG Yao-ying, WAN Zhi-yong

Author information +

History +

Abstract

As the mechanical parameters of concrete dam obtained by indoor test deviates largely from measured values, back analysis of parameters using optimization or bionic algorithm based on measured deformation is adopted in practical engineering. To address the nonuniqueness of parameter inversion, we propose to obtain the probability distribution function of multiple back analysis results based on measured deformation via probability statistical approach, and then determine the inversion parameters according to 80% guarantee rate. The proposed method is verified by the measured deformation values of a roller compacted concrete (RCC) dam in high and cold region. The method provides stable mechanical parameters of dam body and dam foundation, and offers a reference for the safety assessment of RCC dam in high and cold region.

Key words

back analysis of parameters / nonuniqueness / probability statistical analysis / strength standard value / RCC dam

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

XIAO Lei, HUANG Yao-ying, WAN Zhi-yong. A Probability Statistical Analysis Method for Nonuniqueness of Mechanical Parameters Inversion of Roller Compacted Concrete Dam[J]. Journal of Changjiang River Scientific Research Institute. 2019, 36(7): 41-47 https://doi.org/10.11988/ckyyb.20171497

References

[1] 向衍,苏怀智,吴中如.基于大坝安全监测资料的物理力学参数反演[J].水利学报,2004,35(8):98-102.
[2] 康飞,李俊杰,许青.混合蜂群算法及其在混凝土坝动力材料参数反演中的应用[J].水利学报,2009,40(6):736-742.
[3] GU Chong-shi, LI Bo, XU Guang-lei, et al. Back Analysis of Mechanical Parameters of Roller Compacted Concrete Dam[J]. Science China Technological Sciences, 2010, 53(3): 848-853.
[4] 雷鹏,苏怀智,张贵金.基于RNN模型的坝体和岩基区间参数反演方法研究[J].岩土力学,2011,32(2):547-552.
[5] 牛景太.基于混沌遗传算法的碾压混凝土坝力学参数反分析[J].南水北调与水利科技,2012,10(4):140-143.
[6] WANG Wei-qiang, KUANG Ya-hong, LI Shao-hua, et al. Back Analysis of Dam Parameter under Seismic Action[J]. Procedia Engineering , 2012, 28: 429-433.
[7] SU Huai-zhi, WEN Zhi-ping, ZHANG Shuai, et al. Method for Choosing the Optimal Resource in Back-Analysis for Multiple Material Parameters of a Dam and Its Foundation[J]. Journal of Computing in Civil Engineering, 2016, 30(4): 04015006.
[8] 曹明杰,曹鑫,徐政治.量子遗传算法在混凝土重力坝综合弹性模量反演中的应用[J].长江科学院院报,2016,33(4):111-114.
[9] 冯帆,邱信蛟,张国新,等.基于施工期变形监测的特高拱坝力学参数反演研究[J].岩土力学,2017,38(1):237-246.
[10]张进平,卢正超,黎利兵,等.混凝土大坝冻胀变形统计分析模型研究[J].大坝与安全,2007(4):28-32.
[11]卢正超,张进平,黎利兵,等.丰满混凝土重力坝的冻胀变形分析[J].中国水利水电科学研究院学报,2006,4(1):53-57.
[12]方开泰.均匀设计与均匀设计表[M].北京:科学出版社,1994.
[13]刘海成,宋玉普,吴智敏,等.基于应变空间的碾压混凝土各向异性损伤本构模型[J].工程力学,2004,21(6):149-155.
[14]黄耀英,吴中如,王德信.薄层单元基本假设和简化探讨[J].力学与实践,2008,30(2):49-52.
[15]吴中如.水工建筑物安全监控理论及其应用[M].北京:高等教育出版社,2003.