• 作者： 湯麟武; 楊春生; 林西川
• 作者服務機構： 國立成功大學
• 中文摘要： 椿架海徉結構物受波力作用後之動力反應，分由理論及實驗的方法探討及比較。理論上假設結構物之水平移動為微小量彈性應變為線性。整個結構物系統視為一自由度之彈簧質量系統。有效質量及彈簧常數用能量法求得，與模型實驗的結果非常吻合。彈簧系統之外力則由虛功原理求得。微分方程之解乃用重疊法及重疊積分解之，所得結構物之位移比模型實驗結果稍為偏高。但已較去年之情況良好。 臺灣附近之波浪資料亦另加增補，波力係數亦另行實驗，證明為與波浪位相有關之數字，其平均值為CD=1.82，CM=1.67。
• 英文摘要： The dynamic response of offshore pile structures under wave action isinvestigated by theoretical and experimental methods. It is assumed thatthe horizontal displacements of the deck of pile structures are small andthe elastic behavior is linear. Analytical solution of the problem is achievedby use of a one-degree-of-freedom mass-spring system. Certain coefficientparamenters of the equivalent system are found by energy method whilethe external force of the equivalent system is obtained from the principleof virtual work．Solution of differential equation of motion is obtained inthe form of Fourier series and superposition integral. The results comparefavorably with experimental solutions·Wave characteristics in the vicinityof Taiwan have been revised by newly collected data. Wave force coef-ficients have been investigated by experiments and proved that they are thefunction of phase angle of wave propagation and the average values areto be CD=1.82, CM=1.67.
• 中文關鍵字： --
• 英文關鍵字： --