【正文】 ； TMD 減振控制； Abstract II Abstract Along with society39。 important controlling load. Massive experiments indicate that extrahigh buildings39。 application, the equivalent crosswind39。s use and security. Therefore, we need to do some aerodynamic research about the extrahigh buildings. In this article39。s dynamic response and characteristic parameter. By paring with the rigid body model data, we discover that in normal conditions, the structure is very safe and the rigid body experiment data is reliable. Although at some certain windspeed, it will appear negative aerodynamic damping, it is slight and short, and it will not result in the structure39。s vibration control principle, we design a TMD device. Change the antivibration39。s character and makes the first prime frequency move ahead, the vibration in this direction turns bigger. To some extent, this makes the structure unstable. Key words: wind tunnel test。 tall building。 Random Decrement Technology。 目錄 III 目錄 摘要 .................................................................................................................................................. I Abstract ...........................................................................................................................................II 目錄 ............................................................................................................................................... III 第 1 章 緒論 ............................................................................................................................... 1 引言 ............................................................................................................................ 1 超高層建筑抗風(fēng)試驗概述 ........................................................................................ 1 風(fēng)的特性 ............................................................................................................ 1 風(fēng)對建筑結(jié)構(gòu)的作用 ........................................................................................ 2 超高層建筑風(fēng)洞試驗 ........................................................................................ 3 國內(nèi)外在本方向的研究現(xiàn)狀 .................................................................................... 5 本文的主要工作 ........................................................................................................ 7 第 2 章 風(fēng)洞實驗技術(shù)及試驗方案 ........................................................................................... 9 實驗設(shè)備 .................................................................................................................... 9 風(fēng)洞 .................................................................................................................... 9 振動測試分析儀器 .......................................................................................... 10 加速度計量設(shè)備 .............................................................................................. 11 風(fēng)速測量設(shè)備 .................................................................................................. 11 風(fēng)場模擬 .................................................................................................................. 11 風(fēng)速剖面 .......................................................................................................... 11 湍流度 .............................................................................................................. 12 湍流積分尺度 .................................................................................................. 13 脈動風(fēng)空間相干函數(shù) ...................................................................................... 13 脈動風(fēng)速譜 ...................................................................................................... 13 C 類風(fēng)場風(fēng)速模擬 ............................................................................................ 14 實驗?zāi)Ｐ驮O(shè)計原理 .................................................................................................. 16 工程概述和模型參數(shù)確定 ...................................................................................... 18 工程概述 .......................................................................................................... 18 材料和試驗 參數(shù) .............................................................................................. 19 模型尺寸 .......................................................................................................... 20 第 3 章 廣州珠江新城西塔氣動彈性效應(yīng) ............................................................................. 28 概述 .......................................................................................................................... 28 試驗數(shù)據(jù)分析方法與試驗工況 ................................................ 錯誤 !未定義書簽。 隨機減量（ RDT）原理 ...................................................... 錯誤 !未定義書簽。 風(fēng)致加速度響應(yīng) ...................................................................................................... 31 濾波前后對比 .................................................................................................. 31 加速度隨風(fēng)速變化 .......................................................................................... 32 10 年重現(xiàn)期加速度 .......................................................................................... 33 阻尼識別結(jié)果 .......................................................................................................... 35 模型總阻尼 ...................................................................................................... 35 目錄 IV 模型結(jié)構(gòu)阻尼 .................................................................................................. 39 氣動阻尼 .......................................................................................................... 41 與剛性模型試驗結(jié)果進(jìn)行對比 .............................................................................. 42 東塔的干擾效應(yīng) ..................................................