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首页> 外文会议>International Symposium on Natural Draught Cooling Towers; 20040520-22; Istanbul(TR) >Effectiveness of buckling restrained members for diagonal columns to reduce the seismic response of cooling towers
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Effectiveness of buckling restrained members for diagonal columns to reduce the seismic response of cooling towers

机译：对角柱屈曲约束构件降低冷却塔地震响应的有效性

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摘要

The present investigation discusses how buckling restrained members implemented at the feet of cooling towers effectively reduce the seismic responses. If the members are designed to yield under earthquake ground motions of relatively low intensity, no damages to the upper portion of cooling towers may be expected, and the cooling towers may keep their function even in strong earthquakes. Accordingly the design forces of the cooling towers against earthquakes will be lowered on account of the buckling restrained members, leading to a relatively low construction cost with a high structural reliability. A cooling tower, assumed as an example of about 170 m height on a circular ring footing, is analyzed under high earthquake motions of more than 400 cm/sec~2 peak ground acceleration, and the responses are shown to be reduced smaller than those without such structural devices. And the upper part above the feet is shown to be under relatively low stress intensity.
机译：本研究讨论了在冷却塔底部实施的屈曲约束构件如何有效降低地震响应。如果将构件设计为在相对低强度的地震地面运动下屈服，则不会对冷却塔的上部造成损坏，即使在强烈地震中冷却塔也可以保持其功能。因此，由于受屈构件的约束，冷却塔抵抗地震的设计力将降低，从而导致相对较低的建造成本和较高的结构可靠性。在一个大于400 cm / sec〜2峰值地面加速度的高地震运动下，分析了一个假设为冷却塔的圆环立脚高度约为170 m的冷却塔，并显示响应减小得比没有冷却塔的情况要小。这样的结构装置。并且脚上方的上部显示为处于相对较低的应力强度下。

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