本研究採用有限元素法用於三維鋼床鈑鋪面含有由上至下之裂縫 進行破壞參數分析，考慮多種不同影響因子的作用下，計算出三種模 態對應之應力強度因子。而計算應力強度因子的方法是選用 ABAQUS 軟體提供的迴圈積分，進而提升計算的準確性和便利性。 由於鋼床鈑結構因為肋梁、橫梁的相互組合，讓鋪面處於一個非 均勻受力的狀況，這使得推測裂縫位置極為重要，因此選定具有代表 性的載重進行分析，判斷裂縫最有可能發生的位置，再進行後續的參 數分析。 而目前的相關文獻，對於分析鋼床鈑鋪面裂縫的研究非常少，並 無數值分析和實驗結果作為驗證的依據，因此希望本論文能夠提供後 續研究鋼床鈑鋪面裂縫的研究者提供一個研究方向。;The study is investigated for fracture parameters analysis of a 3D steel deck pavement containing a transverse top-down crack using finite element method. Consider the influence of different factors and calculate the stress intensity factors of three type mode. The approach of calculate the stress intensity factor has been evaluated by using contour integrals. This method can improve the accuracy and convenience of the calculation. Steel deck structure is composed of ribs and floor beams are combined with each other, causing the pavement to suffer a non-uniform force. It is very important to predict the location of crack, so choosing the representative load to analysis is prefer to speculate the impossible location of appearance for crack. In current relevant reference, the research about analysis of steel deck pavement crack is very rare so that it doesn’t have any numerical analysis and the data of experiment for verification. Finally, it is hope to provide a analysis orientation for subsequent research.
