大跨屋盖结构多目标等效静力风荷载精细化分析
Refinement analysis of multi-target equivalent static wind loads for large-span roofs
摘要
Abstract
According to the critical problems existing in the theoretical framework for multi-target equivalent static wind loads (ESWLs) analysis, a refinement method was proposed to obtain the multi-target ESWLs of large-span roofs. Firstly, considering the characteristics of wind-induced response, the background, resonant and their coupling fundamental load vectors used to establish the multi-target ESWLs were derived, which well solved the problems that the fundamental loadvectors should be corresponded to the wind-induced response results and the multi-target ESWLs should reexhibit the characteristics of wind-induced response. Then, based on the distribution similarity of the static responses excited by the fundamental load vectors, a merging method for the fundamental load vectors was proposed, which can well ensure the efficiency of the selected fundamental load vectors, and thus using less fundamental load vectors accomplished more targets equivalence. At last, a boundary condition equation and a modified equation were introduced, which well solved the problems of the calculation results including high discreteness, low accuracy and inconvenient engineering application induced by numerical calculation. The proposed refinement method was applied in the National Tennis Center Stadium roof. The results show that the obtained multi-target ESWLs distribution is reasonable and the static responses excited by the multi-target ESWLs agrees well with the target responses.关键词
大跨屋盖/等效静力风荷载/多目标/基本荷载分量/精细化分析Key words
large-span roof/equivalent static wind loads/multi-target/fundamental load vectors/refinement analysis分类
建筑与水利引用本文复制引用
李玉学,杨庆山,田玉基,朱英磊..大跨屋盖结构多目标等效静力风荷载精细化分析[J].中南大学学报（自然科学版）,2016,47(7):2485-2494,10.基金项目
国家自然科学基金资助项目(51278314，51378061)；河北省自然科学基金资助项目(E2012210002)；河北省大型基础设施防灾减灾创新中心基金资助项目(Z994001)；河北省高等学校科学技术研究优秀青年基金资助项目(YQ2013028)；石家庄铁道大学优秀青年基金资助项目(Z9901503)；上海市工程结构安全重点实验室基金资助项目(2015-KF09)(Projects(51278314,51378061) supported by the National Natural Science Foundation of China （51278314，51378061）
Project(E2012210002) supported by the Natural Science Foundation of Hebei Province （E2012210002）
Project(Z994001) supported by the Research Foundation of Hebei Collaborative Innovation Center of Large Infrastructure Disaster Prevention （Z994001）
Project(YQ2013028) supported by the Research Foundation of Hebei Higher Education Institutions （YQ2013028）
Project(Z9901503) supported by the Research Foundation of Shijiazhuang Tiedao University （Z9901503）
Project(2015-KF09) supported by the Research Foundation of Shanghai Key Laboratory of Engineering Structure Safety) （2015-KF09）
