软基沉降拟合的Boltzmann曲线模型研究

doi:10.11799/ce201412030

煤炭工程 ›› 2014, Vol. 46 ›› Issue (12): 90-92.doi: 10.11799/ce201412030

软基沉降拟合的Boltzmann曲线模型研究

陈志杰¹,纪洪广²

1. 北京科技大学土木与环境工程学院
2. 北京科技大学

收稿日期:2013-10-30 修回日期:2014-01-07 出版日期:2014-12-12 发布日期:2014-12-10
通讯作者: 陈志杰 E-mail:12535232@qq.com

Soft soil foundation settlement curve fitting by Boltzmann model

Received:2013-10-30 Revised:2014-01-07 Online:2014-12-12 Published:2014-12-10

摘要/Abstract

摘要：

摘要：对珠江三角洲某千吨级码头软基的实测数据进行分析，探究软土地基沉降的发展规律，其表现形式与S形曲线的基本形式相左。针对地基沉降时间曲线的一般形式，提出并运用Boltzmann曲线模型拟合软土地基的沉降历时曲线，确定其参数含义及模型求解方式，对比四种不同数学模型的拟合数据，拟合结果表明，运用Boltzmann模型具有较高的拟合精度，拟合优势更为明显，运用该模型拟合软基沉降，对实际软基工程后期沉降量及最终沉降量的预测有一定的指导意义。

关键词: 关键词：软基, 沉降曲线, 曲线拟合, Boltzmann曲线模型

Abstract:

Abstract:By analyzing the field data obtained from a kiloton dock soft foundation of the Pearl River Delta, exploring the development regularity of soft soil foundation settlement，its representation is contrary to S-shaped curve. Aim at the general form of foundation settlement time curve, establishing the Boltzmann curve model in the fitting of soft soil sub-grade settlement, determine the parameter meaning and define the approaches of resolving the optimization model, by comparing this fitting data with other three different mathematical model fitting datum, the fitting results show that using the Boltzmann model has higher precision of fitting and more obvious advantage, fitting of soft foundation settlement by using the model to the actual engineering of soft ground settlement later and has certain guiding significance to the prediction of final settlement.

Key words: Key words: soft soil foundation, settlement curve, curve fitting, Boltzmann curve model

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