数学模型在盾构地面长期沉降预测中的应用  

Application of Mathematic Models in Prediction of Long-term Surface Settlements above Shield-driven Tunnels

作　　者：魏纲[1] 张金菊 魏新江[1] 

机构地区：[1]浙江大学城市学院土木工程系,杭州310015 [2]常州市嘉华建筑设计有限公司,江苏常州213001

出　　处：《地下空间与工程学报》2009年第3期541-545,共5页Chinese Journal of Underground Space and Engineering

基　　金：浙江省教育厅科研资助项目(20070180)

摘　　要：收集了在高速公路路基和建筑物地基工后长期沉降预测中较常用的8个数学曲线模型,首次将这8个数学曲线模型用于预测盾构隧道轴线上方的地面长期沉降。采用6个工程算例进行检验,分析结果表明:Gompertz模型和Verhulst模型预测精度较低;Weibull模型、对数曲线模型和泊松曲线模型的预测精度不稳定;修正双曲线模型、邓英尔模型和Mmrgan-Mercer-Flodin模型的预测精度较高,建议可用于预测盾构隧道工后沉降;双曲线模型预测精度较高,且优于修正双曲线模型。8 mathematic curve models were collected, which were applied in the post-construction settlement prediction in highway wadbed and building foundation. These 8 models were applied to predict long-term surface settlements above shield-driven tunnels for the first time. These models were checked up with calculation of 6 engineering examples. The results show that, the Gompertz model and the Verhulst model gave prediction with bad precision, the Weibull model, logarithm model and the Poission model were unstable; and the revised hyperbola model, the DENG Ying-er model and the Mmrgan-Mereer-Flodin model were satisfactory. It is advised that the latter three mathematic models with good prediction precision would be applied to the tunnel engineering. The hyperbola model is also a good prediction model, and it is superior to the revised hyperbola model.

关 键 词：盾构隧道 地面长期沉降 数学模型 预测 

分 类 号：TU433[建筑科学—岩土工程]