[1]郭 彪,杨元周,陈 贺,等.碎石桩复合地基非线性固结解析解[J].西安建筑科技大学学报(自然科学版),2021,53(05):652-658.[doi:10.15986/j.1006-7930.2021.05.006 ]
　GUO Biao,YANG Yuanzhou,CHEN He,et al.Nonlinear consolidation solution for composite foundation reinforced by stone columns[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2021,53(05):652-658.[doi:10.15986/j.1006-7930.2021.05.006 ]
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碎石桩复合地基非线性固结解析解()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
53
期数:
2021年05期
页码:
652-658
栏目:
出版日期:
2021-10-25

文章信息/Info

Title:
Nonlinear consolidation solution for composite foundation reinforced by stone columns
文章编号:
1006-7930(2021)05-0652-07
作者:
郭 彪1; 杨元周1; 陈 贺2; 杜逢彬1
(1.重庆市勘测院,重庆 401121; 2.云南省交通规划设计研究院有限公司,云南 昆明 650041)
Author(s):
GUO Biao1;  YANG Yuanzhou1;  CHEN He2;  DU Fengbin1
(1.Chongqing Survey Institute, Chongqing 401121, China; 2.Broadvision Engineering Consultants, Kunming 650041, China)
关键词:
碎石桩复合地基;  非线性固结;  桩土模量比
Keywords:
composite foundation reinforced by stone columns;  nonlinear consolidation;  modulus ratio of pile to soil
分类号:
TU 47
DOI:
10.15986/j.1006-7930.2021.05.006
文献标志码:
A
摘要:
考虑桩土模量比随固结而不断变化、地基既存在径向渗流也存在竖向渗流,得到了碎石桩复合地基的非线性固结解析解.通过对解的分析表明:与传统理论不同,在桩土模量比变化的条件下,当渗透指数等于压缩指数时(即Cc/Ck=1),复合地基非线性固结解与线性固结解不一致; 与已有的考虑桩土模量比不变条件下的解相比,本文理论求得的地基固结度要小,也就是说,忽略复合地基固结过程中桩土模量比的变化,会使计算固结度偏大,是偏于危险的.
Abstract:
Considering that the modulus ratio of pile to soil varies with consolidation and the foundation has both radial seepage and vertical seepage, the nonlinear consolidation analytical solution of gravel pile composite foundation is obtained. The analysis of the solution shows that, under the condition of changing pile-soil modulus ratio, the nonlinear consolidation solution of composite foundation is inconsistent with the linear consolidation solution when the permeability index is equal to the compression index(i.e Cc/Ck=1), which is different from the traditional theory; compared with the existing solution under the condition of constant pile-soil modulus ratio, the consolidation degree obtained by the theory in this paper is smaller, that is to say, ignoring the change of pile-soil modulus ratio in the process of consolidation of composite foundation will cause the calculated consolidation degree to be larger, which is dangerous.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-04-21修改稿日期:2021-09-27
基金项目:国家重点研发计划基金资助项目(2018YFC1504906)
第一作者:郭彪(1982-),男,博士,正高级工程师,主要从事地基及边坡等方面的研究工作.E-mail:gb25891775@163.com
更新日期/Last Update: 2021-10-25