大跨拱形结构等效静力风荷载

上海交通大学学报 ›› 2016, Vol. 50 ›› Issue (03): 317-323.

• 建筑科学 • 下一篇

大跨拱形结构等效静力风荷载

马宁1，汪汛1，洪荣华1，周岱1,2，李芳菲1，马晋1

（1.上海交通大学船舶海洋与建筑工程学院，上海 200240; 2.高新船舶与深海开发装备协同创新中心，上海 200240）

收稿日期:2015-03-30 出版日期:2016-03-28 发布日期:2016-03-28
基金资助:
国家自然科学基金项目（51278297）,高等学校博士学科点专项科研基金项目（20130073110096）,上海市领军人才计划项目（13XD1402100）资助

Equivalent Static Wind Loads on LargeSpan Arched Structures

MA Ning1,WANG Xun1,HONG Ronghua1,ZHOU Dai1,2,LI Fangfei1,MA Jin1

(1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Collaborative Innovation Center for Advanced Ship and DeepSea Exploration， Shanghai 200240, China)

Received:2015-03-30 Online:2016-03-28 Published:2016-03-28

摘要/Abstract

摘要： 摘要：基于计算流体动力学（CFD）方法和有限元动力时程分析法，数值模拟脉动风特性，获取脉动风速时程，以此作为数值风洞模拟的入口边界条件.运用FLUENT软件对大跨拱形结构进行脉动风作用下结构的非稳态分析，得到作用于结构的时程风压荷载;运用ANSYS分析软件进行结构的风振响应计算，分析获得了基于结构风振响应时程的等效静力风荷载.提出多目标等效静力风荷载加权组合系数的定义，计算获得了大跨拱形结构的多目标等效静力风荷载，并验证了其计算精度.研究结果表明，在基于该方法所得等效静力风荷载作用下，结构静力响应计算结果与风振动力时程响应极值吻合.

关键词: 大跨拱形结构, 风速时程, 多目标组合系数, 等效静力风荷载

Abstract: Abstract： Based on computational fluid dynamics (CFD) and the finite element dynamic timehistory analysis method, the timehistory speed of fluctuating wind was simulated by using the numerical method which was used as inlet boundary condition of numerical wind tunnel. Then, nonsteadystate analysis on a largespan arched structure was made by using the FLUENT software to get the timehistory wind loads. Meanwhile, the windinduced vibration response was analyzed using the ANSYS software. After that, equivalent static wind loads (ESWL) based on timehistory response were obtained and the definition of multiobjective ESWL combination factors was proposed. Finally, the multiobjective ESWL of the open largespan arched structure were obtained with their accuracy verified. The study shows that the static response values under ESWL and extreme response values in dynamic analysis are in good agreement.

Key words: Key words： largespan arched structure, timehistory wind speed, multiobjective combination factor, equivalent static wind loads (ESWL)

中图分类号:

TU 312.1

马宁, 汪汛, 洪荣华, 周岱, 李芳菲, 马晋. 大跨拱形结构等效静力风荷载[J]. 上海交通大学学报, 2016, 50(03): 317-323.

MA Ning, WANG Xun, HONG Ronghua, ZHOU Dai, LI Fangfei, MA Jin. Equivalent Static Wind Loads on LargeSpan Arched Structures[J]. Journal of Shanghai Jiao Tong University, 2016, 50(03): 317-323.

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大跨拱形结构等效静力风荷载

Equivalent Static Wind Loads on LargeSpan Arched Structures

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