吉林火车站屋盖结构风荷载特性的试验研究

张明亮; 李秋胜

doi:10.13204/j.gyjz201204026

吉林火车站屋盖结构风荷载特性的试验研究

doi: 10.13204/j.gyjz201204026

张明亮¹,
李秋胜^1,2

1.
1. 湖南大学土木工程学院长沙 410082;
2.
2. 香港城市大学建筑系香港

基金项目:

国家自然科学基金重大研究计划重点项目(90815030)

详细信息

作者简介:
张明亮，男，1983年出生，博士研究生。

中图分类号: TU312.1
计量
- 文章访问数: 120
- HTML全文浏览量: 9
- PDF下载量: 147
- 被引次数: 0
出版历程
- 收稿日期: 2011-10-25
- 刊出日期: 2012-04-20

EXPERIMENTAL INVESTIGATION ON WIND LOAD CHARACTERISTICS OF ROOF STRUCTURE FOR JILIN RAILWAY STATION

Zhang Mingliang¹,
Li Qiusheng^1,2

1.
1. College of Civil Engineering,Hunan University,Changsha 410082,China;
2.
2. Department of Building and Construction,City University of Hong Kong,Hongkong,China

摘要

摘要: 通过对吉林火车站的刚性模型风洞试验研究,得到在有无周边建筑群干扰下屋盖表面的平均风压系数、脉动风压系数以及屋盖的升力系数分布特性,同时对屋盖局部体型系数及结构风振响应进行详细的对比分析研究。研究结果表明:火车站屋盖结构表面主要呈现负风压(风吸力),屋盖合力升力系数均为负值。主站楼在迎风区屋檐、悬挑区域及屋面凸起的天窗位置气流分离较大,风压变化明显,出现较大的负风压系数;由于站台雨篷四周开敞,气流流经站台雨篷时较为顺畅,气流分离较小,因而站台雨篷风压系数较小。周边的干扰建筑整体上对屋面全风向局部体型系数有一定的遮挡效应,但也不能忽略部分区域增大的情况;周边建筑群对站台雨篷角部、主站楼凸起的天窗及东西两侧悬挑屋面区域风振响应影响较大。
- 火车站 /
- 风洞试验 /
- 升力系数 /
- 体型系数 /
- 风振响应
Abstract: Based on the wind-tunnel test of rigid model of Jilin Railway Station,the mean and fluctuating pressure coefficients,the lift coefficients of the roof were presented and discussed with and without the surrounding buildings. Analyses of the characteristics of the local shape coefficient distributions and wind-induced responses were conducted. It was found that negative pressures (suctions) occurred on the railway station roof in general,the values of the lift coefficients of the roof were negative,and high negative pressure coefficients occurred on the eaves,cantilevered roof and the bulge part of the roof on the main station building. Relatively smaller suctions occurred on the platform awnings of the station because of open surrounding configurations there. The surrounding buildings have some shielding effect on the local shape coefficients of the roof,but can not ignore the situation where they are increased in some areas. Wind-induced responses were significant on the corner of platform awnings,cantilevered roof and the bulge part of the roof. The conclusions obtained from this study are expected to be useful in the wind-resistant design of long-span steel roof structures with complex shapes.
- railway station /
- wind tunnel test /
- lift coefficient /
- shape coefficient /
- wind-induced response

HTML全文

参考文献(14)

GB 500092001 建筑结构荷载规范[S].

[2] 张明亮，李秋胜，陈伏彬，等[复杂体型大跨屋盖表面风压分布的试验研究[J][湖南大学学报:自然科学版，2011，38(10):1-6

[3] 李秋胜，陈伏彬，傅继阳，等[大跨屋盖结构风荷载特性的试验研究[J][湖南大学学报:自然科学版，2009，36(8):12-17

[4] 卢春玲，李秋胜，黄生洪，等[大跨度复杂屋盖结构风荷载的大涡模拟[J][土木工程学报，2011，44(1):1-10

[5] Fu J Y，Xie Z N，Li Q S[Equivalent Static Wind Loads on Long-Span Roof Structures[J][Journal of Structural Engineering，2008，134:1115-1128

[6] Li C，Li Q S，Huang S H，et al[Large Eddy Simulation of Wind Loads on a Long-Span Spatial Lattice Roof[J][Wind and Structures，2010，13(1): 57-82

[7] 沈国辉，孙炳楠，楼文娟[体育馆看台挑篷的风荷载及干扰效应分析[J][空气动力学学报，2005，23(4): 490-495

[8] 顾明，朱川海[大型体育场主看台挑篷的风压及其干扰影响[J][建筑结构学报，2002，23(4): 20-26

[9] 沈国辉，孙炳楠，楼文娟[复杂体型大跨屋盖结构的风荷载分布[J][土木工程学报，2005，38(10): 39-43

[10] 周晅毅，顾明[大跨度屋盖表面风压系数的试验研究[J][同济大学学报，2002，20(12): 1423-1428

[11] 楼文娟，杨毅，庞振钱[刚性模型风洞试验确定大跨屋盖结构风振系数的多阶模态力法[J][空气动力学报，2005，23(2):183-187

[12] 傅继阳，谢壮宁，倪振华[大跨悬挑平屋盖结构风荷载特性的试验研究[J][土木工程学报，2003，36(10): 7-14

[13] American Society of Civil Engineers[Wind Tunnel Studies of Buildings and Structures，ASCE Manuals and Reports onEngineering Practice No[67，Task Committee on Wind Tunnel Testing of Buildings and Structures [M][Aerodynamics Committee Aerospace Division，1999

[14] 希缪 E，斯坎伦 R H[风对结构的作用-风工程导论[M].上海:同济大学出版社，1992.

施引文献

资源附件(0)

访问统计