查詢結果分析
來源資料
相關文獻
- 風力作用下架空電纜之動力反應分析
- Kinetic Analysis of Phototroph-containing Activated-sludge Reactors
- 圓管反應動力解析在CVD模式化之應用
- Kinetic Study of Epoxy Cure in Epoxy/Unsaturated Polyester Blend
- 一種研究環氧樹脂化學反應動力學的新方法:霍氏轉換近紅外光譜分析
- Reaction Kinetics of Styrene Emulsion Polymerization Stabilized by Mixed Surfactants of SDS and NP-40
- A Review Paper on the Kinetic Study of the Pressure-Jump Method
- Sol Preparation from Zirconyl Chloride Octahydrate in Amine-Ammonia Solution
- Phase Transfer Catalytic Reaction between N-Butyl Bromide and Sodium Phenolate--Kinetics of Bi-and Tri-Liquid-Phase Systems
- 聚胺基甲酸酯之合成及其在木材塗裝與膠合上之應用(1)--聚酯化反應之反應動力學探討
頁籤選單縮合
題 名 | 風力作用下架空電纜之動力反應分析 |
---|---|
作 者 | 賴添盛; 曾國泰; 黃源鎮; | 書刊名 | 電信研究 |
卷 期 | 21:1 1991.03[民80.03] |
頁 次 | 頁117-132 |
分類號 | 448.73 |
關鍵詞 | 反應; 架空; 風力作用; 動力; 電纜; |
語 文 | 中文(Chinese) |
中文摘要 | 本文主要分為兩大部份。前四節部份提出纜線靜力分析理論,纜線垂度和張力之關係式,考慮自重作用下之纜線自然振動頻率及其模態,纜線伸長因子對自然振動頻率及其模態之影響。為了換驗理論之精確性,我們在實驗室內進行二項自然振動頻率試驗,試驗結果首理論值相當一致。 後二節路份提出纜線承受強烈陣風作用之分析理論,以陣風反應因子作為陣風效應、強風作用之相關性及動力放大效應之綜合影響參數,使設計者得以靜力分析結果乘以陣風反應因子即可獲得有效動態風壓力,在應用上基為方便。陣風反應因子和結構尺寸、自然振動頻率和黏滯阻尼比有關。陣風反應因子係採用有隨機過程理論分析,其計算可分為三部份。第一部份電流強度係考慮陣風效應之影響,可直接用公式計算而得。第二部份共振因子係考慮風壓力能量譜中與結構共振部份之貢獻值,和纜線跨度、高度、地表粗糙度等因素有關,本文已將之作成列圖,可供設計者查索。最後,本文舉一實例,說明纜線有效動態風壓力之計算方法,可供設計者實用之參考。 |
英文摘要 | This paper presents two topics. At the former four sections, we present the static analysis of the aerial cable structure, the relationship between sag and tensile force of cable, the natural freque4ncies and natural vibration modes of cable which allows for the effects of geometry and elasticity. In order to check the correctness of theoretical formula, we made a series vibration tests in our civil engineering laboratory. It has been proved that the experimental data are much coincided with the theoretical data. At the later two sections, we present the dynamic wind-load analysis of the aerial cable structure. The gust response factor is a measure of the effective dynamic load produced by gusts, and it depends on such structure properties as size, natural frequency and damping. Calculation involves a turbulence intensity, a resonance factor and a structure size factor. The turbulence intensity is defined as the ratio of the standard deviation of wind speed and its one-hour mean value, which may be calculated by given formulate. The resonance factor is defined as the contribution value of dynamic wind load due to fluctuations which are in resonance with cable, which may also be calculated by given formulae. The structure size factor is defined as the contribution value of dynamic wind load due to fluctuations which are not in resonance with cable. It depends on span and height of cable, and roughness of exposure. Four data figures of the structure size factor with different exposures have been plotted for availability. Finally, we present an example to illustrate the application of the forgoing analysis and data. |
本系統中英文摘要資訊取自各篇刊載內容。