Many skyscrapers have installed wind turbine systems to use new renewable energy. In particular, building an integrated wind power generation system by installing a wind power generator inside a building is an attract...Many skyscrapers have installed wind turbine systems to use new renewable energy. In particular, building an integrated wind power generation system by installing a wind power generator inside a building is an attractive method to secure safe energy. However, most studies have dealt with the efficiency of wind turbines and the response effects of wind induced vibration; space preparation for wind turbine installations has not been sufficiently considered. This work reviewed the shapes of openings where wind turbines can be installed in skyscrapers, and the characteristics of wind induced vibration responses occurring in the building with changes in cross sectional area. Nine wind power models were constructed to carry out the experiment. According to the experimental results, wind speed varies with shape of opening in the order of C-type>S-type>R-type. Moreover, wind speed increases as the area is reduced.展开更多
特高压(ultra high voltage,UHV)双柱悬索拉线塔风灾风险评估是实现其性能化抗风设计的重要组成部分,基于此,提出一种适用于特高压双柱悬索拉线塔的风灾风险评估方法。首先,建立特高压双柱悬索拉线塔风灾风险评估的基本框架;随后,基于...特高压(ultra high voltage,UHV)双柱悬索拉线塔风灾风险评估是实现其性能化抗风设计的重要组成部分,基于此,提出一种适用于特高压双柱悬索拉线塔的风灾风险评估方法。首先,建立特高压双柱悬索拉线塔风灾风险评估的基本框架;随后,基于该框架开展了新疆哈密地区的风灾危险性分析,并进行特高压双柱悬索拉线塔的风灾易损性分析;最后,利用所求得的风灾危险性函数和易损性函数卷积得到结构的风灾风险函数,计算得到结构在不同性能水准下的年失效概率,并讨论风向对结构风灾风险的影响。结果表明:新疆哈密地区NE风向方位所对应的风灾危险性最大,而S风向方位对应的风灾危险性则最小,应重点关注NE方位下的结构损伤;当风速小于44 m/s时,双柱悬索拉线塔在任意风向角下发生轻微破坏的概率都很小,结构具有较强的抗风性能;双柱悬索拉线塔在NE-90°工况组合和NE-0°工况组合下的年失效概率分别为最大和最小,其变化趋势与结构风灾易损性曲线相似;不同风向组合下双柱悬索拉线塔的年失效概率都很小,结构发生风致损伤及破坏为一小概率事件。展开更多
近年来,国际上不同国家和地区有关风荷载计算的规范均有不同程度的更新迭代,为了研究规范中风荷载及风致加速度计算参数的差异影响,以联邦航空咨询委员会(Commonwealth Advisory Aeronautical Research Council,CAARC)提出的简单标准模...近年来,国际上不同国家和地区有关风荷载计算的规范均有不同程度的更新迭代,为了研究规范中风荷载及风致加速度计算参数的差异影响,以联邦航空咨询委员会(Commonwealth Advisory Aeronautical Research Council,CAARC)提出的简单标准模型试验为例,对不同国家和地区的矩形高层建筑顺风向风荷载及风致加速度进行对比研究。首先,对不同规范给定的风场特性及风场参数进行了详细分析;随后,将不同规范中的风荷载和风致加速度计算公式归一化处理;最后,结合风洞试验结果,详细讨论参考风速、湍流强度、湍流积分尺度、峰值因子、背景响应因子、共振响应因子、阵风响应因子的差异及其对风荷载及风致加速度的影响。结果表明:风场参数的差异是造成高层建筑顺风向风荷载和风致加速度不同的决定性因素。展开更多
基金Project(2011-0028567)supported by the National Research Foundation of Korea
文摘Many skyscrapers have installed wind turbine systems to use new renewable energy. In particular, building an integrated wind power generation system by installing a wind power generator inside a building is an attractive method to secure safe energy. However, most studies have dealt with the efficiency of wind turbines and the response effects of wind induced vibration; space preparation for wind turbine installations has not been sufficiently considered. This work reviewed the shapes of openings where wind turbines can be installed in skyscrapers, and the characteristics of wind induced vibration responses occurring in the building with changes in cross sectional area. Nine wind power models were constructed to carry out the experiment. According to the experimental results, wind speed varies with shape of opening in the order of C-type>S-type>R-type. Moreover, wind speed increases as the area is reduced.
文摘特高压(ultra high voltage,UHV)双柱悬索拉线塔风灾风险评估是实现其性能化抗风设计的重要组成部分,基于此,提出一种适用于特高压双柱悬索拉线塔的风灾风险评估方法。首先,建立特高压双柱悬索拉线塔风灾风险评估的基本框架;随后,基于该框架开展了新疆哈密地区的风灾危险性分析,并进行特高压双柱悬索拉线塔的风灾易损性分析;最后,利用所求得的风灾危险性函数和易损性函数卷积得到结构的风灾风险函数,计算得到结构在不同性能水准下的年失效概率,并讨论风向对结构风灾风险的影响。结果表明:新疆哈密地区NE风向方位所对应的风灾危险性最大,而S风向方位对应的风灾危险性则最小,应重点关注NE方位下的结构损伤;当风速小于44 m/s时,双柱悬索拉线塔在任意风向角下发生轻微破坏的概率都很小,结构具有较强的抗风性能;双柱悬索拉线塔在NE-90°工况组合和NE-0°工况组合下的年失效概率分别为最大和最小,其变化趋势与结构风灾易损性曲线相似;不同风向组合下双柱悬索拉线塔的年失效概率都很小,结构发生风致损伤及破坏为一小概率事件。
文摘近年来,国际上不同国家和地区有关风荷载计算的规范均有不同程度的更新迭代,为了研究规范中风荷载及风致加速度计算参数的差异影响,以联邦航空咨询委员会(Commonwealth Advisory Aeronautical Research Council,CAARC)提出的简单标准模型试验为例,对不同国家和地区的矩形高层建筑顺风向风荷载及风致加速度进行对比研究。首先,对不同规范给定的风场特性及风场参数进行了详细分析;随后,将不同规范中的风荷载和风致加速度计算公式归一化处理;最后,结合风洞试验结果,详细讨论参考风速、湍流强度、湍流积分尺度、峰值因子、背景响应因子、共振响应因子、阵风响应因子的差异及其对风荷载及风致加速度的影响。结果表明:风场参数的差异是造成高层建筑顺风向风荷载和风致加速度不同的决定性因素。
