摘要
将常用于生产、商业领域的Gompertz、Logistic模型引入到基坑周边地表沉降预测中,并对其进行求导、调整后得出深基坑周边地表沉降公式δ1(x)、δ2(x)。给出利用该公式进行预测的计算步骤,参数是根据工况的不同由二分法不断试算得出,排除了参数人为选取的干扰,改变了目前大部分预测方法人为选取参数随意性,更为合理;有利于设计者对参数值的选取;有利于公式的推广。用工程实例进行验证,公式随工况的进行,预测精度有显著的提高。
Here,Gompertz model and Logistic model often used in production and business field are introduced into the prediction for the surface settlement around foundation pit,and through deriving and adjusting the models,the formulas δ1（x） and δ2（x） for the surface settlement around foundation pit are acquired.Then,the prediction calculation steps of the formulas are given.The parameters are acquired by testing different working conditions and using dichotomy,which removes the disturbance and changes the discretion for selecting parameters with present methods,so it is easy for designers to select the parameter values and favorable for the formulas to be popularized.The engineering examples show that the prediction accuracy of the formulas is improved obviously with different working conditions.
出处
《水利与建筑工程学报》
2013年第4期141-145,共5页
Journal of Water Resources and Architectural Engineering
基金
新疆水利水电工程重点学科基金资助(xjzdsk-2002-10-05)
