軸向樁荷重轉移法之圖解原理與應用

The Principle and Application of Graphical Solution of Load Transfer Method for Axial Loaded Piles

軸向樁荷重轉移法需要迭代運算及內插運算，因此必須使用電腦，根據方程式求解的特性，本文發展軸向荷重樁荷重轉移法之圖解法，代替原來的分析方法，提供無法使用電腦情況下使用。圖解法提供了一種簡單又快速程序，只要用計算器與量角板，即能完成軸向樁荷重傳遞分析，而又能保持必要的正確性。圖解法清楚顯示荷重與位移，如何受到各參數的影響，提供初步設計參考資料，而且容易處理各種形式t-z 曲線。圖解法對於各種材料、各種斷面基樁，任意調整繪圖比例或擷取任意部份t-z 曲線，都能夠處理得很好，但僅適用於單一材料樁基礎，不論實心或空心，而不適用於複合材料樁基礎。

The load transfer method of pile analysis obtains its solution by iterationand interpolation procedure. Hence, computer analysis is consequentlyunavoidable. Based on the character of the solutions of functions, a simplegraphical solution for the load transfer method was developed providing amanual method which ensures a high level of accuracy while computer isnot available. The final solution can be obtained simply with a calculatorand protractor. The graphical solution shows clearly how load and displacementare affected by altering the various parameters, so the resultsprovide reference for preliminary design. The graphical solution is suitablefor any materials, any shape of cross section, and any parts of the t-z curve.However, it is only used for single material piles and not used for compoundmaterial piles.