能量等效大跨屋盖结构三分量多目标等效静力风荷载  

Energy equivalent long-span roof structure three-component multi-objective equivalent static wind load

作　　者：李玉学 冯励睿[1] 李海云 田玉基 LI Yuxue;FENG Lirui;LI Haiyun;TIAN Yuji(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Innovation Center for Wind Engineering and Wind Energy Technology of Hebei Province,Shijiazhuang 050043,China;Key Laboratory of Roads and Railway Engineering Safety Control of China Ministry of Education,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Beijing’s Key Laboratory of Structural Wind Engineering and Urban Wind Environment,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]河北省风工程与风能利用工程技术创新中心,石家庄050043 [3]石家庄铁道大学道路与铁道工程安全保障省部共建教育部重点实验室,石家庄050043 [4]北京交通大学结构风工程与城市风环境北京市重点实验室,北京100044

出　　处：《振动与冲击》2022年第9期276-282,298,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金((51278314,51878040));河北省自然科学基金(E2019210031);中央引导地方科技发展资金(206Z5401G);中央支持地方高校科研团队建设项目(XMPS-24)。

摘　　要：针对大跨屋盖结构风效应静力等效分析中需要考虑多响应目标问题,与脉动风振响应背景分量、共振分量及其二者耦合项分量(简称三分量)相对应,提出一种大跨屋盖结构三分量多目标等效静力风荷载分层分析法。首先,基于能量等效,考虑结构所有节点响应,分别推导了三分量多目标等效静力风荷载表达式;其次,根据三分量响应能量对脉动风振总响应能量的贡献程度,定义三分量能量贡献系数,据此系数实现大跨屋盖结构三分量响应层次划分,并针对不同层次结构,制定了相应的总等效静力风荷载组合求解方法;最后,以北京奥林匹克公园网球中心赛场屋盖结构为例,对其三分量响应层次划分,根据划分结果,组合得到结构总等效静力风荷载。同时对总等效静力风荷载作用下的结构静力响应与频域分析所得目标响应进行对比,发现二者吻合较好,能够满足实际工程要求,说明所提方法有效且具有工程应用价值。Here,aiming at the multi-response objective problem needing to be considered in static equivalent analysis of long-span roof structure wind effects,corresponding to background component,resonance component and their coupling term components so called three-component of fluctuating wind-induced vibration response,a three-component multi-objective equivalent static wind load layered analysis method for long-span roof structures was proposed.Firstly,based on energy equivalence and considering all nodes’responses of the structure,expressions of three-component multi-objective equivalent static wind load were derived,respectively.Secondly,according to contribution levels of three-component response energy to the total response energy of fluctuating wind-induced vibration,three-component energy contribution coefficients were defined,based on these coefficients,the hierarchical division of three-component responses of long-span roof structure was realized,the corresponding combined solving method of total equivalent static wind load was formulated for different hierarchical structures.Finally,taking the roof structure of the tennis center stadium of Beijing Olympic Park as an example,the hierarchical division of its three-component responses was performed.According to the division results,the total equivalent static wind load of the structure was obtained through combination.At the same time,the static response of the structure under the total equivalent static wind load was compared with its objective response obtained with frequency domain analysis.It was shown that the two agree better,they can meet the requirements of practical engineering;the proposed method is effective and has engineering application value.

关 键 词：大跨屋盖结构 等效静力风荷载 多目标 能量等效 三分量 

分 类 号：TU393.3[建筑科学—结构工程] TU312