大型基础下基底层状土的变形性状分析

doi:10.12068/j.issn.1005-3026.2019.12.020

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (12): 1779-1783.DOI: 10.12068/j.issn.1005-3026.2019.12.020

大型基础下基底层状土的变形性状分析

修占国，李纯，王斐笠，齐佳

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2018-10-24 修回日期:2018-10-24 出版日期:2019-12-15 发布日期:2019-12-12
通讯作者: 修占国
作者简介:修占国(1991-)，男，山东烟台人，东北大学博士研究生.
基金资助:
辽宁省自然科学基金资助项目(2013010311-401) .

Investigation on the Deformation Behavior of Multi-layered Soils Under a Large Foundation

XIU Zhan-guo， LI Chun， WANG Fei-li， QI Jia

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2018-10-24 Revised:2018-10-24 Online:2019-12-15 Published:2019-12-12
Contact: WANG Fei-li
About author:-
Supported by:
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摘要/Abstract

摘要： 基于土体变形理论，建立了大型基础下层状土的变形计算模型，运用自编程序SSBS(Simulating Subsidence of Building Subsoil)对工程算例进行了计算分析，并结合该算例的实测数据对计算结果进行了对比校验.研究结果表明:基坑降水使得基底上覆土层产生有效应力增量，且有效应力增量对基底变形的贡献不可忽略；同时，由于大型基础下基底附加应力的非均匀分布，导致最大荷载与最大变形点不一致，基础中心点非最大变形点；应用层状地基变形计算方法得到的变形计算结果更接近工程实际.研究结论可为大型基础下层状地基变形控制提供参考依据.

关键词: 非饱和土, 层状土, 变形, 有效应力增量, 有效附加应力

Abstract: The deformation calculation model called SSBS (simulating subsidence of building subsoil) for multi-layered soils under a large foundation was established based on the soil deformation theory. The deformation of the multi-layered soils of a real project was calculated and compared with the monitored values. It is found that the effective stress increment can be formed in soils above the foundation base due to dewatering， which cannot be neglected. Because of the non-uniform distribution of the subsidiary stress in subsoil under large foundation， the locations of the maximum loading point and the maximum deformation point are not coincident， which means that the maximum deformation does not occur at the center of the foundation. The results show that the deformation calculated by the established model is closer to the field minoring results， thus can be a reference for the deformation analysis for multi-layered subsoil under large foundation.

Key words: unsaturated soils, multi-layered soils, deformation, effective stress increment, effective subsidiary stress

中图分类号:

TU740

修占国，李纯，王斐笠，齐佳. 大型基础下基底层状土的变形性状分析[J]. 东北大学学报:自然科学版, 2019, 40(12): 1779-1783.

XIU Zhan-guo， LI Chun， WANG Fei-li， QI Jia. Investigation on the Deformation Behavior of Multi-layered Soils Under a Large Foundation[J]. Journal of Northeastern University Natural Science, 2019, 40(12): 1779-1783.

参考文献

[1]Sheng D C，Zhang S，Yu Z W.Unanswered questions in unsaturated soil mechanics［J］.Science China Technological Sciences，2013，56(5):1257-1272.
[2]Fan C C，Zeng R Y.Effect of characteristics of unsaturated soils on the stability of slopes subject to rainfall［J］.Japanese Geotechnical Society Special Publication，2015，2(29):1060-1064.
[3]Wang J X，Feng B，Yu H P.Numerical study of dewatering in a large deep foundation pit［J］.Environmental Earth Sciences，2013，69(3):863-872.
[4]李纯，张淼，付诗梦，等.大型基础下层状砂土静力变形性状测试［J］.工程力学，2013，30(8):217-222.(Li Chun，Zhang Miao，Fu Shi-meng，et al.Testing the deformation of layered sandy soil under large foundation due to static additional load［J］.Engineering Mechanics，2013，30(8):217-222.)
[5]Gazetas G.Static and dynamic displacements of foundations on heterogeneous multi-layered soils［J］.Géotechnique，1980，30:159-177.
[6]李纯，修占国，王斐笠，等.Pastor-Zienkiewicz砂土模型静力参数变形敏感性分析［J］.东北大学学报(自然科学版)，2018，39(5):741-745.(Li Chun，Xiu Zhan-guo，Wang Fei-li，et al.Sensitivity analysis of static parameters about deformation in Pastor-Zienkiewicz sandy model［J］.Journal of Northeastern University(Natural Science)，2018，39(5):741-745.)
[7]Fredlund M D，Wilson G W，Fredlund D G.Use of the grain-size distribution for estimation of the soil-water characteristic curver［J］.Canadian Geotechnical Journal，2002，39(5):1103-1117.
[8]Gallage C P K，Uchimura T.Effects of dry density and grain size distribution on soil-water characteristic curver of sandy soils［J］.Soils and Foundation，2010，50(1):161-172.
[9]Fredlund D G，Xin A.Equations for the soil-water characteristic curve［J］.Canadian Geotechnical Journal，1994，31(3):521-532.
[10]李纯，修占国，王斐笠.大型基础下含软弱夹层的层状砂土变形计算［J］.东北大学学报(自然科学版)，2018，39(4):579-583+588.(Li Chun，Xiu Zhan-guo，Wang Fei-li.Calculation on deformation of layered sandy with weak interlayer under large foundation［J］.Journal of Northeastern University(Natural Science)，2018，39(4):579-583+588.)
[11]Fredlund D G，Morgenstern N R.Constitutive relation for volume change in unsaturated soil［J］.Canadian Geotechnical Journal，1976，13(3):261-276.
[12]Onopa I A，Skopintseva E V，Dokhnyanskii M P.Settlement of buildings on heterogeneous bases［J］.Soil Mechanics and Foundation Engineering，1983，20(6):227-230.
[13]Bezvolev S G.Method of accounting for the deformability of an inhomogeneous elastoplastic bed in analyzing foundation slabs［J］.Soil Mechanics and Foundation Engineering，2002，39:162-170.
[14]Denis A，Elachachi S M，Niandou H.Effects of longitudinal variability of soil on a continuous spread footing［J］.Engineering Geology，2011，122:179-190.
[15]Díaz E，Tomás R.A simple method to predict elastic settlements in foundations resting on two soils of differing deformability［J］.European Journal of Environmental and Civil Engineering，2016，20(3):263-281.
[16]李纯，赵富丽，修占国，等.非饱和砂土有效应力增量的试验研究［J］.东北大学学报(自然科学版)，2017，38(8):1158-1162.(Li Chun，Zhao Fu-li，Xiu Zhan-guo，et al.Testing investigation on effective stress increment of unsaturated sandy soils［J］.Journal of Northeastern University(Natural Science)，2017，38(8):1158-1162.)
[15]关守平，房少纯.一种新型的区间-粒子群优化算法［J］.东北大学学报(自然科学版)，2012，33(10):1381-1384.(Guan Shou-ping，Fang Shao-chun.A new interval particle swarm optimization algorithm ［J］，Journal of Northeastern University(Natural Science)，2012，33(10):1381-1384.)

大型基础下基底层状土的变形性状分析

Investigation on the Deformation Behavior of Multi-layered Soils Under a Large Foundation

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