基于指數(shù)曲線模型的沉降修正系數(shù)推求

摘要: 海堤工程地基沉降修正系數(shù)的正確選取, 關(guān)系到利用分層總和法計(jì)算地基沉降量的精度. 依據(jù)某圍墾工程原位監(jiān)測(cè)數(shù)據(jù), 利用曲線擬合法的指數(shù)曲線配合法, 對(duì)某圍墾工程海堤外海側(cè)鎮(zhèn)壓平臺(tái)及堤軸線附近的沉降觀測(cè)點(diǎn)數(shù)據(jù)進(jìn)行了分析計(jì)算, 得到了主堤下地基的主固結(jié)沉降量及最終沉降量, 并推算了沉降修正系數(shù); 同時(shí)利用分層總和法, 計(jì)算了地基的主固結(jié)沉降量, 驗(yàn)證了本方法的合理性.

關(guān)鍵詞: 海堤地基; 指數(shù)曲線; 沉降修正系數(shù)

Abstract :The correct selection of settlement correctionfactor in seawall foundation plays animportant role inthe calculating accuracy of the foundation settlement by layerwise summation method . Based onthe exponential curve model andthe measured datafromthe reclamation observation, the ultimate settlement of the main damis calculated and areasonable , workable solutionis provided . Acase study shows the calculating method of settlement correctionfactor is a realistic one .