工程爆破

2014, v.20(02) 21-24

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爆破模拟地震动下框架抗震性能试验分析
STUDY ON SEISMIC PERFORMANCE OF FRAME STRUCTURES UNDER BLASTING VIBRATION SIMULATING EARTHQUAKE

贠永峰;张方;
YUN Yong-feng;ZHANG Fang;College of Architecture and Civil Engineering,Xi′an University of Science and Technology;

摘要(Abstract):

通过爆破试验模拟天然地震,进行了地震动条件下中核厂区七层框架结构模型的动力响应现场试验,对所取得的试验数据进行统计回归分析,给出了能够预测适合本场地和本次爆破方式条件下爆破振动烈度的经验公式,并分析了土与结构动力相互作用对基础的影响,可为结构的基础设计提供参考。试验结果显示,该七层框架结构模型在地震烈度Ⅶ度下结构安全,故该结构在未来可能遭遇地震动条件下,抗震性能良好,可为框架结构抗振设计提供依据。
A site test of frame structure was introduced through the blasting test simulating earthquake under the earthquake conditions.The blasting method can be well used to simulate earthquake based on the statistical analysis of measurement data obtained in the test.An equivalent explosive formula was proposed,that could be applied in this field and this kind of blasting mode.The influence of the structure dynamic interaction on base was analyzed.This can be used for a designing reference to the foundation of the structure.Based on the results,the frame structure was safe underⅦseismic intensity,so the frame structure anti-vibration performance was good under the vibration conditions that may encounter in the future. It could provide the basis for the shakeproof design of frame structures.

关键词(KeyWords): 爆破振动;模拟地震;框架结构;抗震性能
Blasting vibration;Simulating earthquake;Frame structure;Anti-vibration performance

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作者(Author): 贠永峰;张方;
YUN Yong-feng;ZHANG Fang;College of Architecture and Civil Engineering,Xi′an University of Science and Technology;

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