Simplified calculation method of hydrodynamic force for elevated pile caps
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摘要: 基于Morison動水理論,提出了作用于高樁承臺的動水力簡便計算方法,該方法可以應用于深水大跨度橋梁抗震設計.以南京長江三橋南塔基礎為原型,利用水中振動臺試驗,通過對比無水和有水狀態時動力荷載作用下的模型試驗和計算的結果,驗證了動水力簡便計算方法的準確性和可靠性,并對影響動水力的主要影響因素進行了重點討論.Abstract: A simplified calculation method of hydrodynamic force which acts on elevated pile caps was proposed on the basis of the Morison hydrodynamic force theory,and it can be applied to the seismic design of long span deepwater bridges.Shaking table tests of elevated pile caps were performed with the south tower base of the Nanjing Yangtze 3rd River Bridge as a prototype.A comparison between the results of shaking table tests and those of the calculation method under dynamic loads verified the accuracy and reliability of the proposed method.At last,the influencing factors on the hydrodynamic force were discussed.
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Key words:
- bridge piers /
- dynamic loads /
- shaking table tests /
- calculation methods /
- seismic design
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