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(中建國(guó)際建設(shè)公司，北京 100026)

［摘要］僑?；▓@廣場(chǎng)深基坑工程基坑深達(dá)21.675m，采用上部復(fù)合土釘墻、下部地下連續(xù)墻的組合支護(hù)體系，按照信息化施工要求對(duì)土釘內(nèi)力進(jìn)行了長(zhǎng)時(shí)間監(jiān)測(cè)，根據(jù)監(jiān)測(cè)曲線，運(yùn)用回歸分析方法建立了土釘內(nèi)力非線性回歸模型，得出了土釘內(nèi)力與時(shí)間的相互關(guān)系，并得到了分別適合于中短期以及中長(zhǎng)期土釘內(nèi)力與時(shí)間相互關(guān)系的較為理想的回歸函數(shù)。監(jiān)測(cè)結(jié)果和數(shù)據(jù)分析表明，土釘內(nèi)力監(jiān)測(cè)中應(yīng)用回歸分析是完全可行的，有助于提高深基坑工程領(lǐng)域信息化施工的準(zhǔn)確性和預(yù)見性。

［關(guān)鍵詞］土釘；內(nèi)力；監(jiān)測(cè)；回歸分析

Regression analysis on internal force monitoring of soil nailing in combined excavation

 Yin Wenbin, Cheng Xuejun, Geng Dongqing

 (China State Construction International Co., Beijing 100026, China)

Abstract:The depth of Qiaofu Garden Plaza deep excavation is 21.675m, and the supporting form is soil nailing, ground anchor and diaphragm wall. Regression models have been made according to the monitoring figure of internal force of soil nailing in a combined deep excavation work, and the interrelation of the soil nailing internal force with the time has been obtained. From the analysis, two better regression models are found which are suitable separately for short term and long term. It  shows that the optimal regression function can fit text data finely and forecast soil nailing internal force, and regression analysis is available in the monitoring of the soil nailing internal force and can enhance predictability and veracity of information construction in deep excavation works.

Keywords:soil nailing; internal force; monitoring; regression analysis