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[1]柯世堂,赵林,葛耀君,等.大型冷却塔环基受力性能的影响因素分析[J].建筑科学与工程学报,2009,26(03):55-58.
　KE Shi-tang,ZHAO Lin,GE Yao-jun,et al.Analysis of Influencing Factors of Mechanics Performance of Hoop Base for Large Cooling Towers[J].Journal of Architecture and Civil Engineering,2009,26(03):55-58.
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大型冷却塔环基受力性能的影响因素分析(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
26卷
期数:
2009年03期
页码:
55-58
栏目:
出版日期:
2009-09-20

文章信息/Info

Title:
Analysis of Influencing Factors of Mechanics Performance of Hoop Base for Large Cooling Towers
作者:
柯世堂1,赵林1,葛耀君1,高玲2
1.同济大学土木工程防灾国家重点实验室,上海200092;2.华东电力设计院,上海200063
Author(s):
KE Shi-tang1, ZHAO Lin1, GE Yao-jun1, GAO Ling2
1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; 2. East China Electric Power Design Institute, Shanghai 200063, China
关键词:
大型冷却塔;  地基;  刚度变化;  环基内力;  环基位移
Keywords:
large cooling tower;  subgrade;  variety of stiffness;  internal force of hoop base;  displacement of hoop base
分类号:
TU991.42
DOI:
-
文献标志码:
A
摘要:
以某大型冷却塔结构为例,建立考虑地基土影响的三维有限元分析模型,讨论了不同地基土条件、地基刚度变化、塔筒开孔大小及位置对冷却塔环基受力性能的影响。分析结果表明:桩基上冷却塔的基频小于岩基上冷却塔的基频,并且某些整体振型会提前被激发出来; 环基轴力主要受径向刚度和环向弯曲刚度影响,其变化和径向刚度变化成反比,和环向弯曲刚度变化成正比,并且开始时增幅较大,随着弯曲刚度继续增大,其增幅变小; 径向弯矩由环向弯曲刚度控制,其变化趋势和环基轴力正好相反; 开孔会使竖向弯矩增大,并且随着孔洞直径增大而变大。
Abstract:
Taking the large cooling tower as an example, the 3-D finite element analysis model considered the influence of subgrade soil was established. The influencing factors of mechanics performance of hoop base for large cooling powers, such as different subgrade soil conditions, the variety of base stiffness as well as the size and position of open hole were discussed. The analytical results show that the basic frequency of the pile foundation is less than the basic frequency of rock foundation for cooling powers, and the whole vibration modes will be excited. Meanwhile, the axis forces are mainly influenced by radial stiffness and hoop-bending stiffness, and the variety is inverse ratio with the radial stiffness,and is direct ratio with hoop bending stiffness, the amplitude is greater at the beginning, and then diminishes with the augment of bending stiffness. Finally, the radial moment value is controlled by hoop bending stiffness, and its variation tendency is opposite with the axis force, at the same time, the open hole will cause the augment of the vertical moment value, which is increased with the augment of diameter of the hole.

参考文献/References:

[1] 武际可.大型冷却塔结构分析的回顾与展望[J].力学与实践,1996,18(6):1-5. WU Ji-ke.Review and Expectation of Structure Analysis for Large Cooling Tower[J].Mechanics in Engin-eering,1996,18(6):1-5.
[2]赵 林,葛耀君,曹丰产.双曲薄壳冷却塔气弹模型的等效梁格设计方法和实验研究[J].振动工程学报,2008,21(1):31-37. ZHAO Lin,GE Yao-jun,CAO Feng-chan.Equivalent Beam-net Design Theory of Aero-elastic Model About Hyperbolic Thin-shell Cooling Towers and Its Experimental Investigation[J].Journal of Vibration Engineering,2008,21(1):31-37.
[3]赵 林,李鹏飞,葛耀君.等效静风荷载下超大型冷却塔受力性能分析[J].工程力学,2008,25(7):79-86. ZHAO Lin,LI Peng-fei,GE Yao-jun.Numerical Investigation on Performance of Super Large Cooling Towers Under Equivalent Static Wind Load[J].Engin-eering Mechanics,2008,25(7):79-86.
[4]刘若斐,沈国辉,孙炳楠.大型冷却塔风荷载的数值模拟研究[J].工程力学,2006,23(增1):177-183. LIU Ruo-fei,SHEN Guo-hui,SUN Bing-nan.Numerical Simulation Study of Wind Load on Large Hyper-bolic Cooling Tower[J].Engineering Mechanics,2006,23(S1):177-183.
[5]王 铭,黄志龙,张丽强.烟塔合一自然通风冷却塔的有限元分析[J].力学与实践,2006,28(4):65-67. WANG Ming,HUANG Zhi-long,ZHANG Li-qiang.Finite Element Analysis of a Natural Draft Cooling Tower with Flue Gas Inlets Integrated[J].Mechanics in Engineering,2006,28(4):65-67.
[6]DL/T 5339-2006,火力发电厂水工设计规范[S]. DL/T 5339-2006,Technical Specification for Hydraulic Design of Thermal Power Plant[S].
[7]GB/T 50102-2003,工业循环水冷却设计规范[S]. GB/T 50102-2003,Code for Design of Cooling for Industrial Recirculating Water[S].

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备注/Memo

备注/Memo:
收稿日期:2009-04-20
基金项目:国家自然科学基金重大研究计划项目(90715039); 科技部重大科技项目(2008ZX06004-001)
作者简介:柯世堂(1982-),男,安徽池州人,工学博士研究生,E-mail:keshitang@163.com。
更新日期/Last Update: 2009-09-20