【正文】 揉結(jié)構(gòu) ， 這類建筑對(duì)于風(fēng) 環(huán)境 特別敏感，風(fēng)荷載已成為超高層建筑的重要控制荷載。因此，需要對(duì)一些超高層 建筑進(jìn)行氣動(dòng) 彈性效應(yīng)影響的 研究。 同時(shí) 根據(jù)高層建筑結(jié)構(gòu)振動(dòng)控制原理，設(shè)計(jì)了倒懸質(zhì)量塊的減振裝置(TMD)。 最后 ， 通過和剛體模型數(shù)據(jù)進(jìn)行了對(duì)比，發(fā)現(xiàn)在正常情況下，結(jié)構(gòu)是很安全的，剛體模型試驗(yàn)數(shù)據(jù)是可靠的。 important controlling load. Massive experiments indicate that extrahigh buildings39。s use and security. Therefore, we need to do some aerodynamic research about the extrahigh buildings. In this article39。s vibration control principle, we design a TMD device. Change the antivibration39。 tall building。 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(yàn)概述 ........................................................................................ 1 風(fēng)的特性 ............................................................................................................ 1 風(fēng)對(duì)建筑結(jié)構(gòu)的作用 ........................................................................................ 2 超高層建筑風(fēng)洞試驗(yàn) ........................................................................................ 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(shí)驗(yàn)技術(shù)及試驗(yàn)方案 ........................................................................................... 9 實(shí)驗(yàn)設(shè)備 .................................................................................................................... 9 風(fēng)洞 .................................................................................................................... 9 振動(dòng)測試分析儀器 .......................................................................................... 10 加速度計(jì)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(dòng)風(fēng)空間相干函數(shù) ...................................................................................... 13 脈動(dòng)風(fēng)速譜 ...................................................................................................... 13 C 類風(fēng)場風(fēng)速模擬 ............................................................................................ 14 實(shí)驗(yàn)?zāi)Ｐ驮O(shè)計(jì)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(yàn) 參數(shù) .............................................................................................. 19 模型尺寸 .......................................................................................................... 20 第 3 章 廣州珠江新城西塔氣動(dòng)彈性效應(yīng) ............................................................................. 28 概述 .......................................................................................................................... 28 試驗(yàn)數(shù)據(jù)分析方法與試驗(yàn)工況 ................................................ 錯(cuò)誤 !未定義書簽。 風(fēng)致加速度響應(yīng) ...................................................................................................... 31 濾波前后對(duì)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(shí)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(dòng)阻尼 .......................................................................................................... 41 與剛性模型試驗(yàn)結(jié)果進(jìn)行對(duì)比 .............................................................................. 42 東塔的干擾效應(yīng) ...................................................................................................... 43 本章小結(jié) .................................................................................................................. 45 第 4 章 廣州西塔模型減振控制的初步研究 ......................................................................... 46 概述 .......................................................................................................................... 46 減振原理介紹 .......................................................................................................... 46 幾種常見的減振措施 .........................................................