[1]任兰红,曾 坚*,曾穗平.山地地形对鼓浪屿历史文化街区风荷载作用效应研究[J].山地学报,2019,(01):41-52.[doi:10.16089/j.cnki.1008-2786.000397]
　REN Lanhong,ZENG Jian*,ZENG Suiping.Wind Load of Kulangsu Historical and Cultural District Effected by Hilly Terrain[J].Mountain Research,2019,(01):41-52.[doi:10.16089/j.cnki.1008-2786.000397]
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山地地形对鼓浪屿历史文化街区风荷载作用效应研究()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2019年01期
页码:
41-52
栏目:
山地环境
出版日期:
2019-03-10

文章信息/Info

Title:
Wind Load of Kulangsu Historical and Cultural District Effected by Hilly Terrain
文章编号:
1008-2786-(2019)1-041-12
作者:
任兰红1; 曾 坚1*; 曾穗平2; 3
1. 天津大学 建筑学院,天津 300072; 2. 天津城建大学 建筑学院,天津 300384; 3. 同济大学 建筑与城市规划学院,上海 200092
Author(s):
REN Lanhong1;  ZENG Jian1*;  ZENG Suiping2; 3
1. School of Architecture, Tianjin University, Tianjin 300072, China; 2. School of Architecture, Tianjin Chengjian University, Tianjin 300384, China; 3.School of Architecture and Urban Planning, Tongji University, Shanghai 200092, China
关键词:
鼓浪屿历史文化街区;  山地地形;  风速;  风压;  风荷载体型系数;  CFD风环境数值模拟
Keywords:
Kulangsu historical and cultural district;  hilly terrain;  wind speed;  wind pressure;  wind load shape coefficient;  CFD simulation of wind environment
分类号:
TU312
DOI:
10.16089/j.cnki.1008-2786.000397
文献标志码:
A
摘要:
山地环境中的街区风荷载与平地条件下有明显不同。鼓浪屿历史文化街区处于台风易发地区,对其开展山地环境下风载作用效应的研究对科学保护历史建筑非常必要。本文以鼓浪屿历史文化街区为研究对象,运用ANSYS Fluent进行数值分析山地地形对鼓浪屿风场与风荷载体型系数的影响并提出对该地区已有建筑防风保护与建筑选址的建议。表明:(1)鼓浪屿的高风速、极值加速比、极值负压和极值风荷载体型系数均集中分布在成十字相交的两轴线的各山顶,两轴线是核心线性防风区域,龙头山、鸡母山和笔架山山顶为防风重点。(2)龙头山山顶近地面处加速比最大,对应产生极值风荷载体型系数。(3)两轴线的横风向加速比均大于顺风向,山顶加速效应大于峡谷侧风面大于峡谷底处。(4)山顶处数值模拟得到的风荷载体型系数与规范值差距不大,峡谷处由规范得出的修正系数较数值模拟值偏小。(5)海拔较低的迎风面和背风面山脚风速低,适合建筑选址。龙头山、鸡母山和笔架山山顶区为高风速频发且极值负压产生的区域,是加强建筑检修与维护、提高防风性能的重点,不宜作为建设选址。
Abstract:
The wind loads on the districts in mountainous environment are obviously different from those on flat land. The historical and cultural district in Kulangsu is located in typhoon-prone area, so it is very necessary for the scientific protection of historical buildings to carry out the research on the wind load effect in mountainous environment. Taking the historical and cultural district in Kulangsu as the research object, this paper used ANSYS Fluent to numerically analyze the influence of mountain topography on wind field and wind load shape coefficient of Kulangsu, and put forward some suggestions on the windproof protection and site selection of the existing buildings in this area. The results showed that:(1)The high wind speed, extreme speed-up ratio, extreme negative wind pressure and extreme wind load shape coefficient of Kulangsu were concentratedly distributed in mountain tops of the two cross-intersecting axes. The two axes were the core linear windproof areas, and the tops of Longtou Mountain, Jimu Mountain and Bijia Mountain were the windproof focus.(2)The maximum speed-up ratio is near the ground at the top of Longtou Mountain, which generated extreme wind load shape coefficient correspondingly.(3)The cross-wind speed-up ratios of the two axes were larger than that of the along-wind direction. The speed-up effect on the mountain top was larger than that on the cross-wind plane of the gorge which was larger than that at the bottom of the gorge.(4)The wind load shape coefficient obtained by numerical simulation at the mountain top was not much different from the value in the Load Code for the Design of Building Structure, and the modified coefficient at the gorge obtained from the Load Code for the Design of Building Structure was smaller than the numerical simulation value.(5)The wind speed was low in windward side and mountain foot at the leeside with low elevation, which were appropriate for building site selection. Hilltops of Longtou Mountain, Jimu Mountain and Bijia Mountain were areas with frequently high wind speed and extreme negative wind pressure. Therefore, these areas were the focus of strengthening building maintenance and improvement of windproof performance, and should not be used as construction site selection.

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备注/Memo

备注/Memo:
收稿日期(Received date):2018-03-03; 改回日期(Accepted date):2019-01-27
基金项目(Foundation item):国家“十三五”重点研发计划(2016YFC0502903); 国家自然科学基金(51438009,51708387); 教育部人文社科基金(17YJCZH013)。[National Key Research and Development Program of China for the 13th Five-year Plan Period(2016YFC0502903); National Nature Science Foundation of China(51438009, 51708387); Ministry of Education of Humanities and Social Science Foundation(17YJCZH013)]
作者简介(Biography):任兰红(1986-),女,山东临沂人,博士生,主要研究方向:建筑风环境。[REN Lanqing(1986-), female, born in Linyi, Shandong province, Ph.D. candidate, specialized in wind environment of architecture] E-mail:qlyy222@126.com
*通讯作者(Corresponding author):曾坚(1957-),男,博士,教授,研究方向:生态城市与防灾减灾。[ZENG Jian(1957-), male, Ph.D. professor, specialized in ecological city and disaster prevention and mitigation] E-mail: 13602058416@vip.163.com
更新日期/Last Update: 2019-01-30