帶承臺單樁耦合體系縱向振動的重正化解法研究
發(fā)布時間:2019-04-02 14:21
【摘要】:從非線性振動力學的角度出發(fā),基于重正化方法研究非均勻地層中帶承臺單樁耦合體系的縱向自由振動問題。采用彈簧耦合單元塊體的形式對單樁及樁側土體進行離散,并用廣義Voigt串聯(lián)體描述黏彈性土層的摩阻效應,建立多段多自由度非線性承臺 單樁 土縱向振動模型。通過重正化坐標轉換原則給出振動模型的縱向振動頻率解,并引入質量參振分配系數對不同情況下的振動頻率方程進行表征,進而通過算例驗證重正化解法的正確性和準確性。最后考察樁身質量、材料剛度、承臺質量及樁側摩阻力對耦合體系自由振動頻率的影響規(guī)律,研究成果可為帶承臺樁基礎動力設計提供參考。
[Abstract]:Based on the non-linear vibration mechanics, the problem of longitudinal free vibration of a single pile coupling system with a bearing platform in a non-uniform formation is studied based on the method of re-alignment. 閲囩敤寮圭哀鑰﹀悎鍗曞厓鍧椾綋鐨勫艦寮忓鍗曟々鍙婃々渚у湡浣撹繘琛岀鏁,
本文編號:2452629
[Abstract]:Based on the non-linear vibration mechanics, the problem of longitudinal free vibration of a single pile coupling system with a bearing platform in a non-uniform formation is studied based on the method of re-alignment. 閲囩敤寮圭哀鑰﹀悎鍗曞厓鍧椾綋鐨勫艦寮忓鍗曟々鍙婃々渚у湡浣撹繘琛岀鏁,
本文編號:2452629
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