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...
-  2016 

基于有限元法的拱坝温度荷载简化公式 Simplified formula for temperature loads on arch dams based on FEM

Keywords: 拱坝,有限单元法,温度荷载,简化公式,拱梁分载法

Full-Text   Cite this paper   Add to My Lib

Abstract:

现行《混凝土拱坝设计规范》(SL 282-2003)关于拱梁分载法温度荷载的简化公式尚不能很好地考虑拱坝的导温系数和水温边界,以至拱坝表面温度应力的计算误差较大并影响温控防裂措施.以小湾水电站高拱坝工程为依托,在全坝段、全过程三维有限元仿真反馈分析成果的基础上,分析了拱坝温度场时空分布规律,论证了解析解与数值解的一致性以及解析解的适用范围;应用复变函数法和傅里叶变换法,建立了拱梁分载法温度荷载的简化公式.算例结果表明,该简化公式计算温度荷载的精度有明显提高,因其可以较好地考虑混凝土导温系数和水温边界影响

References

[1]  黎展眉.拱坝温度荷载与温度应力的考虑[J].水利水电科技进展,2001,21(5):9-11.Li Zhanmei.Consideration of temperature loads and temperature stress on arch dams[J].Advances in Science and Technology of Water Resources,2001,21(5):9-11.
[2]  SL 282-2003混凝土拱坝设计规范[S].北京:中国水利水电出版社,2003.SL 282-2003 Design Specification for Concrete Arch Dams[S].Beijing:China Water Power Press,2003.
[3]  朱伯芳.论拱坝的温度荷载[J].水力发电,1984,23(9):23-29.Zhu Bofang.Temperature loads on arch dams[J].Journal of Hydroelectric Engineering,1984,23(9):23-29.
[4]  邱焕峰,蒋媛媛,傅少君,等.小湾拱坝施工过程温度场仿真分析[J].武汉大学学报(工学版),2010,43(6):723-726.Qiu Huanfeng,Jiang Yuanyuan,Fu Shaojun,et al.Simulation analysis of temperature field in Xiaowan arch dam construction[J].Engineering Journal of Wuhan University,2010,43(6):723-726.
[5]  傅少君,张石虎,解敏,等.混凝土拱坝温控的动态分析理论与实践[J].岩石力学与工程学报,2012,31(1):113-122.Fu Shaojun,Zhang Shihu,Xie Min,et al.Dynamic analysis theory and practice for temperature control and cracking prevention of concrete arch dam[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(1):113-122.
[6]  朱伯芳.拱坝温度荷载计算方法的改进[J].水利水电技术,2006,37(12):19-22.Zhu Bofang.Improvement of method for computing temperature loads on arch dams[J].Water Resources and Hydropower Engineering,2006,37(12):19-22.
[7]  Holman J P.Heat Transfer[M].10th ed.Beijing:China Machine Press,2011:1-3.
[8]  杨波,朱伯芳.拱坝运行期非线性温差应力分析[J].水利水电技术,2003,34(6):24-26.Yang Bo,Zhu Bofang.Analysis of nonlinear temperature loads on arch dams[J].Water Resources and Hydropower Engineering,2003,34(6):24-26.
[9]  麦家煊.拱坝温度场和温度荷载的计算(I)[J].水利学报,1981,(6):30-45.Mai Jiaxuan.Computation of temperature field and temperature loads on arch dams[J].Journal of Hydraulic Engineering,1981,(6):30-45.
[10]  孙训芳,方孝淑,关来泰.材料力学[M].北京:高等教育出版社,2009:14-15.Sun Xunfang,Fang Xiaoshu,Guan Laitai.Material Mechanics[M].Beijing:Higher Education Press,2009:14-15.
[11]  周华,傅少君,王国进,陈胜宏.小湾拱坝施工期温度场动态跟踪仿真[J].武汉大学学报(工学版),2009,42(1):77-81.Zhou Hua,Fu Shaojun,Wang Guojin,Chen Shenhong.Dynamic tracking simulation analysis of temperature field of Xiaowan arch dam during construction period[J].Engineering Journal of Wuhan University,2009,42(1):77-81.
[12]  朱伯芳.大体积混凝土温度应力与温度控制[M].北京:中国电力出版社,1999:67-70.Zhu Bofang.Thermal Stresses and Temperature Control of Mass Concrete[M].Beijing:Water Resources and Electric Power Press,1999:67-70.
[13]  王明新.数学物理方程[M].北京:清华大学出版社,2009:23-51.Wang Mingxin.Mathematical Physics Equation[M].Beijing::Tsinghua University Press,2009:23-51.
[14]  Carslaw H S,Jaeger J C.Conduction of Heat in Solids[M].2nd ed.Oxford:Oxford University Press,1986.
[15]  雷柯夫A B.热传导理论[M].北京:高等教育出版社,1955.Lakoff A B.Heat Transfer[M].Beijing:Higher Education Press,1955.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133