摘要
从概率分布入手,研究台风(风速下限值为32.7 m/s)波高、周期的联合概率分布,推导了多年最大波高在台风下的条件分布,借此计算出以平潭海洋站测波资料为基础的设计波浪要素。进行了平潭桥施工最大双悬臂状态的气弹模型风洞试验,在7个风偏角下对抖振、涡激共振、驰振进行了测试。研究波浪频谱和波力谱,及其对结构作用的位移响应和响应谱方差。最后对结构悬浇期间的各种风险事态进行分析,并提出安全施工的对策。
The joint distribution of wave height and period in the condition that the velocity was greater than or equal to 32.7m/s was analyzed,from which the design wave parameters were deduced.Wind tunnel aeroelastic model tests of Pingtan Strait Bridge at the longest double cantilever construction state were carried out.Wave spectrum and wave force spectrum were studied so that the displacement responses of the bridge were obtained.Through risk assessment of the bridge under the longest double cantilever construction state,countermeasures for construction safety were proposed in the end.
出处
《结构工程师》
2011年第4期98-103,共6页
Structural Engineers
关键词
平潭海峡大桥
风浪联合分布
气弹模型
风洞试验
波浪谱
施工安全对策
pingtan strait bridge
joint distribution of wind and wave
aeroelastic model
wind tunnel test
wave spectrum
countermeasure for construction safety
