大型基础下含软弱夹层的层状砂土变形计算

doi:10.12068/j.issn.1005-3026.2018.04.025

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (4): 579-584.DOI: 10.12068/j.issn.1005-3026.2018.04.025

大型基础下含软弱夹层的层状砂土变形计算

李纯，修占国，王斐笠

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2016-10-24 修回日期:2016-10-24 出版日期:2018-04-15 发布日期:2018-04-10
通讯作者: 李纯
作者简介:李纯(1971-)，男，安徽潜山人，东北大学副教授.
基金资助:
国家自然科学基金资助项目(51171041).国家自然科学基金重点资助项目(90915005)；辽宁省自然科学基金资助项目(2013010311).

Calculation on Deformation of Layered Sandy with Weak Interlayer Under Large Foundation

LI Chun， XIU Zhan-guo， WANG Fei-li

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

Received:2016-10-24 Revised:2016-10-24 Online:2018-04-15 Published:2018-04-10
Contact: XIU Zhan-guo
About author:-
Supported by:
-

摘要/Abstract

摘要： 基于饱和土的相关理论，推导了大型基础下层状地基的沉降计算模型.考虑不同的土性，根据修正剑桥模型和摩尔-库伦模型，推导了K_○0条件下且能够考虑其塑性变形的压缩模量.基于平面网格子域法结合分层总和法建立了一个完整的、更加贴近工程实际的大型基础下含软弱夹层的层状砂土地基沉降计算模型.研究结果表明:该模型的计算结果与模拟结果很贴近，且能够突出体现出软弱夹层的变形特性.研究结论可为含软弱夹层的大型基础地基沉降计算提供直接参考依据.

关键词: 层状砂土地基, 软弱夹层, 平面网格子域, 本构关系, 沉降

Abstract: A settlement calculation models of layered subgrade under large foundation was established based on theories of saturated soil. Taking the different soil properties and the modified Cam-Clay and Mohr-Coulomb models into account， the compressive modulus were derived by considering the plastic deformations under the condition of K_○0. Based on the subfield of planar mesh and the layer-wise summation method， a settlement calculation model of layered sandy foundation base with weak interlayer under large foundation was established， which is more close to the engineering practice. The results showed that the calculation results by the suggested model are comparatively close to the numerical simulation results， and can clearly reflect the characteristic of deformation in weak interlayer. The suggested calculation model can provide basis to the settlement calculation of layered sandy foundation base with weak interlayer under large foundation.

Key words: layered sandy foundation base, weak interlayer, subfield of planar mesh, constitutive relation, settlement

中图分类号:

TU740

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): 579-584.

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): 579-584.

参考文献

[1]Merlos J，Romo M.P.Fluctuant bearing capacity of shallow foundations during earthquakes［J］.Soil Dynamics and Earthquake Engineering，2006，26:103-114.
[2]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.
[3]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.
[4]Gazetas G.Static and dynamic displacements of foundations on heterogeneous multilayered soils［J］.Géotechnique，1980，30:159-177.
[5]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.
[6]李纯，朱浮生，张学元.层状砂土地基静力变形形状测试［J］.东北大学学报(自然科学版)，2012，33(7):1038-1042.(Li Chun，Zhu Fu-sheng，Zhang Xue-yuan.Deformation properties of layered sandy foundation soil tested with static additional load［J］.Journal of Northeastern University(Natural Science)，2012，33(7):1038-1042.)
[7]Karstunen M，Leoni M.Geotechnics of soft soils:focus on ground improvement［S］.London:Taylor & Francis Group，2009.
[8]Peduto D，Nicodemo G，Maccabiani J，et al.Investigating the behavior of buildings with different foundation types on soft soils:two case studies in the Netherlands［J］.Procedia Engineering，2016，158:529-534.
[9]Bezvolev S G，Fedorovskii V G，Aleksandrovich V F.Improvement of foundation settlement calculations by the layerwise summation method［J］.Hydrotechnical Construction，1991，25(10):638-644.
[10]Han X L，Xiao C A，Li J X，et al.Spring constitutive model of rigid pile composite foundation and application in design of raft foundation［J］.Journal of Central South University，2013，20(4):1079-1083.

[1]	赵文，孙远，柏谦，夏云朋. 小直径管幕工法横导洞施工现场试验及参数优化[J]. 东北大学学报（自然科学版）, 2023, 44(3): 432-439.
[2]	王子君，赵文，程诚，柏谦. 地铁车站小直径管幕工法开挖变形规律[J]. 东北大学学报（自然科学版）, 2022, 43(11): 1630-1637.
[3]	张志红，郭晏辰，凡琪辉，张钦喜. 悬挂式止水帷幕基坑降水引起坑外地面沉降计算方法[J]. 东北大学学报（自然科学版）, 2021, 42(9): 1329-1334.
[4]	贾超，张少鹏，丁朋朋，吴静. 地面沉降对地下水时空响应及其非工程控沉[J]. 东北大学学报（自然科学版）, 2021, 42(7): 1032-1040.
[5]	张志红，秦文龙，张钦喜，郭晏辰. 悬挂式止水帷幕基坑控水优化方法[J]. 东北大学学报（自然科学版）, 2021, 42(2): 242-251.
[6]	王卓，李宝宽，刘中秋，牛冉. 垂直连铸凝固过程的数值模拟研究[J]. 东北大学学报:自然科学版, 2020, 41(9): 1257-1261.
[7]	张钦喜，闫金波，王成名，张志红. 悬挂式止水帷幕室内模型试验研究[J]. 东北大学学报:自然科学版, 2020, 41(11): 1640-1645.
[8]	韩健勇，赵文，关永平，贾鹏蛟. 近接浅基础建筑物深基坑变形特性及关键参数[J]. 东北大学学报:自然科学版, 2018, 39(10): 1463-1468.
[9]	李纯，赵富丽，修占国，王秋鸿. 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.
[10]	赵磊，孙璐，孙伟，赵国堂. 均匀降温下CRTSII型高速铁路轨道板温度应力分析[J]. 东北大学学报:自然科学版, 2017, 38(11): 1664-1668.
[11]	陈秋松，张钦礼，王新民，肖崇春. 立式砂仓断面积和高度研究及应用[J]. 东北大学学报:自然科学版, 2016, 37(7): 1040-1044.
[12]	张钦礼，刘奇，赵建文. 全尾砂絮凝沉降参数预测模型研究[J]. 东北大学学报:自然科学版, 2016, 37(6): 875-879.
[13]	何顺友，杨春和，汪洪星. 堆载挤淤沉降断面的分段计算方法[J]. 东北大学学报:自然科学版, 2016, 37(11): 1609-1614.
[14]	王石，张钦礼，王新民，李帅. 基于絮凝沉砂的立式砂仓面积最佳计算模式[J]. 东北大学学报:自然科学版, 2016, 37(10): 1501-1506.
[15]	刘敦文，褚夫蛟，任高峰，吴迪. 硬岩矿深部开采过渡区厚度优选与数值分析[J]. 东北大学学报:自然科学版, 2015, 36(4): 571-575.

大型基础下含软弱夹层的层状砂土变形计算

Calculation on Deformation of Layered Sandy with Weak Interlayer Under Large Foundation

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价