首页|基于风洞试验和多重性能水准的机场航站楼屋架屋面系统风灾易损性评估

基于风洞试验和多重性能水准的机场航站楼屋架屋面系统风灾易损性评估

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为了有效评估机场航站楼屋架屋面系统的抗风性能、合理预测结构风致破坏,基于风洞试验提出了考虑结构多重性能水准的机场航站楼屋架屋面系统风灾易损性评估方法.通过风洞试验,对机场航站楼进行风致响应分析,得到风荷载在屋盖表面的分布特征,并模拟得到相应风向角的风荷载;在此基础上,根据机场航站楼屋架屋面结构的破坏特征、结构特点,分别以屋架结构应力比、屋面板大肋边节点相对位移定义并量化了机场屋架结构与屋面结构的三重性能水准,进而构建了机场航站楼的概率风灾需求模型和风灾易损性函数,并结合拉丁超立方抽样方法对机场航站楼屋架屋面系统进行了风灾易损性分析.结果表明:屋盖各区域表面风压在各自迎风、背风向时出现极值,且在迎风向时出现最大值;构建的概率风灾需求模型可以较准确地反映结构损伤特征;根据绘制的易损性曲线,可以用于获取结构风灾需求达到性能水准3阶段的最小概率风速,对于屋面结构和屋架结构分别为10、17、25 m/s和42、45、53 m/s;该方法可预测机场航站楼屋架屋面系统在给定风速下的风灾损伤程度,利于风灾发生后及时采取合理的修复措施.
Wind disaster vulnerability assessment of airport terminal roof system based on wind tunnel test and multiple performance levels
In order to effectively evaluate the wind resistance performance of the roof system of the airport terminal buildings and reasonably predict the structural wind damage of structures,a wind tunnel test method considering multiple performance levels of roof system of airport terminal was proposed in this study.In order to analyze the wind-induced response of the airport terminal,the distribution characteristics of wind load on the roof surface were analyzed by wind tunnel test,and the wind load of the corresponding wind direction angle was simulated.On this basis,according to the failure characteristics and structural characteristics of the roof truss and cladding system of the airport terminal,the triple performance level of the airport roof cladding structure and the roof truss structure were defined and quantified by the stress ratio of the roof structure and the relative displacement of the large rib edge nodes of the roof panel respectively.Then,the probabilistic wind disaster demand model and the wind disaster vulnerability function of the airport terminal building were constructed,and the wind disaster vulnerability analysis of the roof truss and cladding system of the airport terminal building was carried out by combining the Latin hypercube sampling method.The results show that the surface wind pressure of each area on the roof surface has an extreme value in the windward and leeward directions,and the maximum value appears in the windward direction.The probabilistic wind disaster demand model can accurately reflect the structural damage characteristics.According to the vulnerability curve,it can be used to obtain the minimum probability wind speed that the structural wind disaster demand reaches each performance level,which is 10,17,25m/s and 42,45,53m/s for the roof structure and the roof truss structure,respectively.This method can also be used to predict the wind disaster damage degree of the roof truss and cladding system of the airport terminal under a given wind speed,which is conducive to taking reasonable repair measures in time after the wind disaster.

airport terminalroof truss and cladding systemwind tunnel testmultiple performance levelsprobabilistic wind disaster demand modelwind disaster vulnerability

张宏、王涛、李正良、吕大刚、谭忆秋

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重庆大学土木工程学院,重庆 400045

哈尔滨工业大学交通科学与工程学院,黑龙江哈尔滨 150040

哈尔滨工业大学哈尔滨工业大学重庆研究院,重庆 401151

风工程及风资源利用重庆市重点实验室(重庆大学),重庆 400045

哈尔滨工业大学土木工程学院,黑龙江哈尔滨 150090

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机场航站楼 屋架屋面系统 风洞试验 多重性能水准 概率风灾需求模型 风灾易损性

重庆市博士后研究项目重庆市自然科学基金项目

2022CQBSHBT3009CSTB2022NSCQ-MSX0456

2024

10.14006/j.jzjgxb.2023.0776

建筑结构学报
中国建筑学会

建筑结构学报

CSTPCD北大核心
影响因子：1.546
ISSN：1000-6869
年,卷(期)：2024.45(11)