降低超高层建筑横风向响应的气动措施研究进展.doc

降低超高层建筑横风向响应气动措施研究进展
顾明1,张正维1,2,全涌1
(1 同济大学土木工程防灾国家重点实验室,上海 200092;2 南通大学建筑工程学院,南通 226019)
摘要:随着科学技术的进步,现代超高层建筑向高柔方向发展,其横风向荷载和响应问题越来越显著,成为结构设计中必须重点关注的问题。降低超高层建筑横风向荷载和响应的措施主要有空气动力学措施(简称气动措施)、结构措施以及外设阻尼器措施三种,其中气动措施的机制是通过设计合适的建筑外型(或适当的局部修正)使其满足抗风要求。本文对超高层建筑抗风气动措施的研究成果进行了总结,这些措施主要有:选择气动性能好的基本截面形状,横截面角部处理、横截面沿高度变化、立面开洞,等等。同时,本文还指出目前研究和工程应用中需要注意的问题,以及今后研究的建议。
关键词:超高层建筑;降低横风向响应;气动措施
中国图书分类号: 文献标识码:A
Aerodynamic Measures for Mitigation of Across-wind Responses of Super Tall Buildings: State of the Art
GU Ming1 ,ZHANG Zhengwei1,2 ,QUAN Yong1
(1 Sate Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
2 School of Architecture Engineering, Nantong University, Nantong 226019, China)
Abstract: With the development of science and technology, modern super-tall building is ing more slender and flexible, which will lead to more serious across-wind loads and responses of them. Measures for mitigation of across-wind loads and responses of super tall buildings are mainly aerodynamic measures, structural measures and additional dampers. Appropriate designing of architectural configuration or appropriate local modifications of cross-section of buildings can mitigate the across-wind loads and responses, which is the mechanism of aerodynamic measures. This paper presents an overview of past/recent work on aerodynamic measure