[1]闫富有..砂井地基径向非线性固结解析[J].郑州大学学报(工学版),2007,28(02):35-38.[doi:10.3969/j.issn.1671-6833.2007.02.009]
　YAN Fu..Analysis of radial nonlinear consolidation of sand well foundations[J].Journal of Zhengzhou University (Engineering Science),2007,28(02):35-38.[doi:10.3969/j.issn.1671-6833.2007.02.009]

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砂井地基径向非线性固结解析()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

28

期数:

2007年02期

页码:

35-38

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Analysis of radial nonlinear consolidation of sand well foundations

作者:

闫富有.

郑州大学,土木工程学院,河南,郑州,450001

Author(s):

YAN Fu.

关键词:

砂井;  固结;  解析解;  非线性;  自重应力

Keywords:

sandholes;  consolidation;  analytical solution;  nonlinearity;  Self-weight stress

DOI:

10.3969/j.issn.1671-6833.2007.02.009

文献标志码:

A

摘要:

基于砂井等应变固结模型,考虑初始有效应力沿深度变化,忽略井阻和竖向排水固结的影响,应用平均孔隙比与平均有效应力的对数关系,建立砂井非线性径向排水固结的分层计算模型,并求得常荷载作用下的径向排水固结解析解.在变荷载作用下,把变化阶段的荷载划分为一系列不连续的剧加荷载,导出有效应力的递推公式.结果表明,因自重应力随深度增加,土层径向排水平均固结度随其埋深而增大.如把整个厚度范围内自重应力取为平均值,将使计算的沉降量偏小,径向平均固结度偏大.

Abstract:

Based on the strain consolidation model such as sand wells, considering the change of initial effective stress along the depth, ignoring the influence of well resistance and vertical drainage consolidation, applying the logarithmic relationship between the average pore ratio and the average effective stress, a layered calculation model of nonlinear radial drainage consolidation of sand wells is established, and the analytical solution of radial drainage consolidation under constant load is obtained. Under the action of variable load, the load in the change stage is divided into a series of discontinuous and dramatic loads, and the recursive formula of the effective stress is derived. The results show that the average consolidation degree of radial drainage of the soil layer increases with the burial depth due to the increase of self-weight stress with depth. If the self-weight stress in the entire thickness range is taken as the average, the calculated settlement amount will be small and the radial average consolidation degree will be large.

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