加宽荷载下饱和地基初始孔压及沉降分析  

Initial Excess Pore Water Pressure and Settlement Analysis of Saturated Soil Ground under Embankment Widened

作　　者：张军辉 黄晓明[2] 

机构地区：[1]长沙理工大学公路工程学院,湖南长沙410076 [2]东南大学交通学院,江苏南京210096

出　　处：《湖南科技大学学报（自然科学版）》2008年第2期61-65,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：交通部西部交通建设重点项目(200231800015)

摘　　要：基于Biot固结方程获得了半无限线弹性地基在梯形荷载作用下的初始时刻解,进而得到了梯形荷载作用下地基瞬时沉降、固结沉降和总沉降计算式.由此得到了加宽路堤荷载作用下地基的附加有效应力、超孔隙水压力和地表沉降表达式,并对各响应进行了分析.其计算表达式简洁,便于工程应用.Based on the Biot＇s consolidation equation, the initial settlement and excess pore pressure were gained for the case with a vertical trapezoidal force acted on the surface of half infinite elastic body, and the formulae of the immediate settlement, consolidation settlement and total settlement of ground were achieved. The equations of the additional effective stress, excess pore water pressure and settlement of surface caused by the embankment widening were gained. Then, all the responses were analyzed. These formulas were simple and easy to use in practice. 7figs., 9refs.

关 键 词：BIOT固结方程 附加有效应力 超孔隙水压力 加宽 

分 类 号：TU433[建筑科学—岩土工程]