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  2013 

不同高度重力坝动水压力分析及Westergaard修正公式研究

DOI: 10.6052/j.issn.1000-4750.2012.01.0032

Keywords: 流固耦合,动水压力,Westergaard公式,水可压缩性,库底吸收系数

Full-Text   Cite this paper   Add to My Lib

Abstract:

对5种不同高度的重力坝进行了地震作用下坝体-库水系统耦合计算,将所得结果与Westergaard公式解析解相比较发现,两种方法得到的动水压力结果沿坝高度上的分布有很大不同,流固耦合结果在坝面上有上部偏大,下部偏小的趋势;随着坝体高度的增加流固耦合模型的这种趋势越为明显,坝面上出现动水压力最大值的位置也逐渐升高。据此,对Westergaard公式做出修正,考虑到多方面因素对动水压力的影响,对原公式引入了坝体高度修正项、坝体弹性修正项、库底吸收修正项。修正的Westergaard公式解与流固耦合结果及以往文献的试验和计算结果吻合良好。

References

[1]  Westergaard H M. Water pressures on dams under earthquakes [J]. Transactions of ASCE, 1933, 98: 418―433.
[2]  Kotsubo S. Dynamic water pressure on dams due to irregular earthquakes [J]. Memoirs Faculty of Engineering, Kyushu University, Fukuoka, Japan, 1959, 18(4): 119―129.
[3]  Chopra A K. Hydrodynamic pressures on dams during earthquake [J]. Journal of the Engineering Mechanics Division, ASCE, 1967, 93(EM6): 205―223.
[4]  Zangar C N, Haefeli R J. Electric analog indicates effect of horizontal earthquake shock on dams [J]. Civil Engineering, 1952, 22: 278―279.
[5]  Chwang A T. Hydrodynamic pressures on sloping dams during earthquakes. Part 2. Exact theory [J]. Journal of Fluid Mechanics, 1978, 87(2): 343―348.
[6]  Avil#x000e9;s J, S#x000e1;nchez-Sesma F J. Hydrodynamic pressures on dams with non-vertical upstream face [J]. Journal of Engineering Mechanics, ASCE, 1986, 112(10): 1054―1061.
[7]  Permumalswami P R, Kar L. Earthquake hydrodynamic forces on arch dams [J]. Journal of the Engineering Mechanics Division, ASCE, 1973, 99(5): 965―977.
[8]  Selby A, Severn R T. An experimental assessment of add mass of some plates vibration in water [J]. Earthquake Engineering and Structural Dynamics, 1972, 1(2): 189―200.
[9]  Nath B, Potamitis S G. Coupled dynamic behavior of realistic arch dams in including hydrodynamic and foundation interaction [J]. ICE Proceedings, 1982, 73(3): 587―607.
[10]  Fenves G, Chopra A K. Earthquake analysis of concrete gravity dams including reservoir bottom absorption and dam-water-foundation rock interaction [J]. Earthquake Engineering and Structural Dynamics, 1984, 12(5): 663―680.
[11]  Fenves G, Chopra A K. Effects of reservoir bottom absorption and dam-water-foundation rock interaction on frequency response functions for concrete gravity dams [J]. Earthquake Engineering and Structural Dynamics, 1985, 13(1): 13―31.
[12]  Fok K L, Chopra A K. Earthquake analysis of arch dams including dam-water interaction, reservoir boundary absorption and foundation flexibility [J]. Earthquake Engineering and Structural Dynamics, 1986, 14(2): 155―184.
[13]  Mill#x000e1;n M A, Young Y L, Pr#x000e9;vost J H. The effects of reservoir geometry on the seismic response of gravity dams [J]. Earthquake Engineering and Structural Dynamics, 2007, 36(11): 1441―1459.
[14]  Francesco Parrinello, Guido Borino. Lagrangian finite element modelling of dam-fluid interaction: Accurate absorbing boundary conditions [J]. Computers and Structures, 2007, 85(6): 11―14.
[15]  李德玉, 张伯艳, 王海波, 禹莹. 重力坝坝体-库水相互作用振动台试验研究[J]. 中国水利水电科学研究院学报, 2003, 1(3): 216―220.
[16]  Li Deyu, Zhang Boyan, Wang Haibo, Yu Ying. A shaking table model test on dam-reservoir interaction of gratity dam [J]. Journal of China Institute of Water, 2003, 1(3): 216―220. (in Chinese)
[17]  王铭明, 陈健云, 范书立. 重力坝地震动水压力的试验研究[J]. 水电能源科学, 2012, 30(5): 51―54.
[18]  Wang Mingming, Chen Jianyun, Fan Shuli. Experimental study on hydrodynamic pressure on gravity dam on shaking table [J]. Journal of Hydroelectric Engineering, 2012, 30(5): 51―54. (in Chinese)
[19]  晏启祥, 刘浩吾, 王忠. 流固耦合系统库底边界对动水压力的影响[J]. 西南交通大学学报, 2002, 37(3): 246―249.
[20]  Yan Qixiang, Liu Haowu, Wang Zhong. The influence of boundary character of reservoir bottom on hydrodynamics in fluid-structure systems [J]. Journal of Southwest Jiaotong University, 2002, 37(3): 246―249. (in Chinese)
[21]  章青, 傅作新. 考虑库底吸收作用时挡水坝的抗震分析[J]. 河海大学学报, 1988, 16(6): 20―32.
[22]  Zhang Qing, Fu Zuoxin. Earthquake analysis of dams considering reservoir bottom absorption [J]. Journal of Hohai University, 1988, 16(6): 20―32. (in Chinese)
[23]  王忠, 晏启祥, 刘浩吾. 库底反射性边界条件与地震动水压力分析[J]. 四川大学学报(工程科学版), 2002, 34(1): 36―39.
[24]  Wang Zhong, Yan Qixiang, Liu Haowu. Reflectional boundary condition on reservoir bottom and analysis of hydrodynamics [J]. Journal of Sichuan University (Engineering Science Edition), 2002, 34(1): 36―39. (in Chinese)
[25]  陈江, 张少杰, 闵兴鑫. 坝体-库水互相作用的流固耦合分析[J]. 西南科技大学学报, 2009, 24(1): 13―18.
[26]  Chen Jiang, Zhang Shaojie, Min Xingxin. Fluid-solid coupling analysis for dam-reservoir interaction [J]. Journal of Southwest University of Science and Technology, 2009, 24(1): 13―18. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133