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空冷支架结构体型独特,空冷平台以上有较高的挡风墙,性质属于围护结构,但又与结构一起随风振动,与规范上所说的围护结构不同,因此不能直接采用规范给出的阵风系数,抗风计算时仅参考国外一些参数,是否准确无法验证。通过1/150三跨刚性模型风洞试验,考虑风向角、周围建筑物、风机是否转动等因素,得到三跨空冷支架结构挡风墙在不同工况下的阵风系数,并对其分布规律进行分析,提出设计建议。得到的各种参数不仅为空冷支架结构体系的抗风设计提供了依据,而且为我国行业规程关于空冷凝汽器支架结构体系风参数相关条文的进一步修订和完善提供了基础研究资料。
The structure of the air-cooled scaffold is unique in body shape. The wind wall above the air-cooled platform has a high wind wall. The nature of the air-cooled scaffolding structure belongs to the envelope structure but vibrates with the wind in the structure. Therefore, it can not be directly adopted by the specification Gust factor, wind resistance calculation is only reference to some foreign parameters, whether accurate and can not be verified. Through the 1/150 three-span rigid wind tunnel test, considering the wind direction angle, the surrounding buildings and whether the fan rotates or not, the gust coefficient of three-span air-cooled shield wind wall under different operating conditions is obtained and its distribution rule Analysis, put forward design proposals. The obtained parameters not only provide the basis for the wind-resistant design of the air-cooled scaffolding structure system, but also provide the basic research data for the further revision and perfection of the relevant provisions of the industry regulation on the wind parameters of the scaffold structure of the air-cooled condenser.