某电厂建筑物沉降规律的曲线拟合模型研究  

Research on Curve Fitting Model of Building Subsidence Rule in a Power Plant

作　　者：王志楠[1] 陆伟岗[1] 沈锦儒[1] WANG Zhi-nan;LU Wei-gang;SHEN Jin-ru(Jiangsu Province Electric Power Design Institute, Nanjing 211102, China)

机构地区：[1]江苏省电力设计院,江苏南京211102

出　　处：《电力勘测设计》2017年第4期7-11,共5页Electric Power Survey & Design

摘　　要：某工程采用振冲碎石桩法处理软弱地基。为了积累资料,基础处理完工后对地基进行了长期的沉降观测。这些观测资料的拟合曲线可以采用对数曲线或指数曲线,它们的相关系数均在0.99左右。笔者采用指数拟合曲线推算建筑使用50年时各基础的沉降值,与分层总和法计算的沉降值十分接近。笔者建议从严控制与本工程类似工程的稳定标准,最后100 d的平均沉降速率应<0.01 mm/d。Vibroflotation gravel pile method was used to treat soft ground of one project.After the completion,in orderto obtain deformation values,Implementation of settlement observations for a long time.When after the regressionanalysis on the observation data,it can found that the settlement value with the time changing regular can be representedthrough a logarithm curve or exponential curve,their correlation coefficients are around0.99.Building use fixednumber of year for50years,the author uses the index fitting curve calculate foundation settlement values,its valueclose to the layered summation method to calculate the settlement of value.Settlement stability criteria of similar tothis project,the author suggest should be strictly controlled,the settlement rate of the last100d should be<0.01mm/d.

关 键 词：振冲碎石桩 沉降观测 拟合曲线 最终沉降值 平均沉降速率 

分 类 号：TU4[建筑科学—土工工程]