题 目:Updating Soil Parameters Using EXCEL Spreadsheet Method for Predicting Wall Deflections in Braced Excavations
时 间:2016年10月11日(星期二)下午15:30-17:30
地 点:浙江大学紫金港校区安中大楼A326
报告人简介:
仉文岗,河北沧州人,重庆大学"百人计划"特聘研究员,博士生导师。2006本科毕业于河海大学土木工程试点班;2009硕士毕业于河海大学岩土工程专业;2013年12月获得新加坡南洋理工大学博士学位,之后留校做博士后研究员。2016年5月加入重庆大学土木工程学院,主要研究方向为:地下开挖数值模拟以及可靠度评价,基坑支护开挖以及边坡稳定分析。迄今以第一作者或通讯作者身份共发表SCI论文18篇,出版著作章节3部。
报告简介:
A back analysis procedure implemented in a spreadsheet environment that uses construction monitoring data for supported excavation systems to continuously recalibrate the soil parameters and thus enable updating of the lateral wall deflection predictions is presented. With this framework, the observed maximum wall deflections are used to update the soil parameters through a recently developed semi-empirical polynomial regression model. This paper demonstrates that the updated soil parameters recalibrated from the current stage of excavation can be used to predict the maximum wall deflection in the subsequent stages of excavation. The proposed framework is computationally efficient and can easily be implemented in a spreadsheet. The feasibility and effectiveness of the proposed methodology is illustrated through seven well-documented excavation case histories. The results of the case histories show that the updated soil parameters improve the accuracy of estimations of the wall deflections in braced excavations.
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浙江大学防灾工程研究所
浙江省岩土力学与工程学会