| 风荷载作用下超大跨度机库结构响应分析 |
| |
| 引用本文： | 徐庆阳,;李爱群,;沈顺高,;丁幼亮.风荷载作用下超大跨度机库结构响应分析[J].江苏建筑,2014(1):27-29. |
| |
| 作者姓名： | 徐庆阳 ;李爱群 ;沈顺高 ;丁幼亮 |
| |
| 作者单位： | [1]南京审计学院国际审计学院江苏公共工程审计重点实验室,江苏南京211815; [2]中国长江三峡集团,北京100038; [3]东南大学土木工程学院东南大学混凝土与预应力混凝土结构教育部重点实验室,江苏南京210096; [4]中国航空规划建设发展有限公司,北京100120 |
| |
| 基金项目： | 国家自然基金面上项目（51178100）;江苏省自然科学基金面上项目（BK2011693） |
| |
| 摘 要： | 文章对某大跨机库进行三维脉动风作用下的风振分析,给出了主要风向角作用下屋盖节点的位移均方根值分布与加速度均方根值分布,并分析了不同风向角对风振响应值的影响。通过平均风与脉动风作用下的节点响应值对比,发现影响屋盖风振系数分布的主要因素是机库本身的结构特性,对节点风致响应进行频谱分析的结果进一步表明了对于节点位移响应来说背景分量占主要比重,而共振分量则在节点加速度响应中占主要部分。
|
| 关 键 词： | 超大跨度机库 风振响应分析 频谱分析 |
Study of Wind-Induced Response of Super Long-Span Hangar under Fluctuating Wind Load |
| |
| Affiliation: | XU Qing-yang,LI Ai-qun,SHEN Shun-gao,DING You-liang(1.School of International Audit, Nanjing Audit University, Jiangsu Key Laboratory for Public Project Audit,Nanjing Jiangsu 211815 Chins 2.China Three Gorges Corporation, Beijing 100038 China; 3.College of Civil Engineering, Southeast University, Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University, Nanjing Jiangsu 210096 China; 4.China Aviation Planning and Construction Development Co., Ltd, Beijing 100120 China) |
| |
| Abstract: | Time-domain analysis of one long-span hangar under three-dimensional fluctuating wind load is carried out in this paper. The root-mean-square of displacements and root-mean-square of accelerations of all joints on the roof are given out. The influence of wind direction to the wind-induced response is studied. Meanwhile wind-induced response under mean wind load and fluctuating wind load is compared. Results show that the distribution of the gust response factors is mainly affected by the character of the hangar. In addition, the power density spectrum of joint wind-induced response is analyzed. It shows that background component is the main part of joint displacement while that of joint acceleration is resonant component. |
| |
| Keywords: | super long-span space truss wind-induced response analysis spectrum analysis |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
