Behavior of Reinforced Concrete Cooling Tower Shell under Lateral Load on Nonuniform Foundation
Behavior of Reinforced Concrete Cooling Tower Shell under Lateral Load on Nonuniform Foundation
复制标题
非均匀地基上钢筋混凝土冷却塔筒体在横向荷载作用下的性能
DOI：
10.1080/01457632.2016.1217060
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Takashi Hara
中科院分区：
文献类型：
--
作者：
○今里容子;山田宮土理;輿石直幸;三浦しおり;Takashi Hara
研究了非均匀地基条件下钢筋混凝土（R/C）冷却塔筒体在自重和侧向风荷载作用下的应力分布和极限强度。冷却塔的施工场地相当大，并且场地可能在不同位置内具有不同的承载能力。因此，在设计此类结构时，应考虑地基不均匀对支撑体系不均匀沉降的影响。在冷却塔的建模中，壳体的高度约为150 m，过梁处的半径约为60 m。考虑了两种支承柱体系。一个是V柱系统。二是立柱支撑体系。在不均匀沉降的情况下，考虑了基础梁的影响。数值分析结果表明，在不沉降柱与过梁的连接处出现应力集中，不均匀沉降会降低结构的极限承载力。基础梁是基础不均匀沉降对钢筋混凝土薄壳破坏的改善，起着传递应力的重要作用。
The stress distributions and the ultimate strength of a reinforced concrete (R/C) cooling tower shell under a self-weight and a lateral wind load were investigated under the conditions on nonuniform foundation. The construction site of the cooling tower is quite huge and the site may have different bearing capacities within location by location. Therefore, to design such structures, the effects of uneven settlements of supporting system due to the nonuniform foundation should be considered. In modeling the cooling tower, the height of the shell was about 150 m and the radius at the lintel was about 60 m. Two kinds of supporting column systems were considered. One was the V-Column systems. The other was the Vertical column supporting systems. Also, the effects of foundation beam were considered under uneven settlement. From the numerical analysis, the stress concentration was arisen near the connections between the unsettled column and the lintel and the ultimate strength was reduced by the uneven settlement depending on the wind direction. The foundation beam represented the improvement of the damage of R/C concrete shell under uneven foundation settlement and plays an important role to transfer the stresses.