王燕, 谢秀栋, 张飞.道路拓宽改造对邻近建筑地基变形影响分析与控制[J].河南理工大学学报（自然科学版）,2021,40(2):179-185.

WANG Y, XIE X D, ZHANG F.Analysis and control of road widening and reconstruction loading influence onfoundation deformation of adjacent buildings[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(2):179-185.

道路拓宽改造对邻近建筑地基变形影响分析与控制

王燕1, 谢秀栋2, 张飞1

1.福建江夏学院 工程学院，福建 福州 350108;2.福州大学 土木工程学院，福建 福州 350108

摘要:针对道路拓宽改造引起邻近软土地基沉降时间长、不均匀沉降大且难以预测等问题，以某道路拓宽改造项目为工程背景，通过有限元分析、现场实测和理论计算研究邻近软土地基的沉降变形规律，提出一种附加荷载作用下软土地基变形的有限元分析预测方法。结果表明：出水池地基在不同监测点处沉降量变化较大，沉降不均匀；在同一监测点处，土层越浅，沉降速率越大，分层沉降量的最大值发生在压缩模量小的软土层中；考虑软土蠕变-固结耦合效应的数值分析结果与实测数据吻合较好，可用于预测软土地基工后沉降；采用一维固结理论沉降的计算结果与实测值相比偏大，因此，软土地基的沉降计算中考虑软土的蠕变效应是有必要的。

关键词:道路拓宽;软土地基;沉降变形;固结理论

doi:10.16186/j.cnki.1673-9787.2019110073

基金项目:国家自然科学基金资助项目（41772297）

收稿日期:2019/11/18

修回日期:2020/12/27

出版日期:2021/03/15

Analysis and control of road widening and reconstruction loading influence onfoundation deformation of adjacent buildings

WANG Yan1, XIE Xiudong2, ZHANG Fei1

1.School of Engineering， Fujian Jiangxia College， Fuzhou 350108 ， F q ian， China;2.School of Civil Engineering， Fuzhou University， Fuzhou  350108 ， Fujian， China

Abstract:Targeting at the problems of long settlement time， large uneven settlement and difficult to predict of adjacent soft soil foundation caused by road widening and reconstruction， taking a road widening reconstruction project as engineering background， the settlement deformation law of the adjacent soft soil foundation was studied by finite element analysis， field measurement and theoretical calculation. A finite element analysis and prediction method for deformation of soft ground under additional load was proposed. The results showed that：The settlement of the foundation of the outlet pool varyied greatly at different monitoring points， and the settlement was uneven ； At the same monitoring point， the shallower the soil layer was， the greater the settlement rate was， and maximum value of layered settlement occured in soft soil with small modulus of compression ； The numerical results considering the creep-consolidation coupling effect of soft soil agreeed well with the measured data， which could predict the post-construction settlement of the soft soil foundation ； The results of settlement calculation by using one-dimensional consolidation theory were larger than those measured and calculated， and it was necessary to consider the creep effect of soft soil in settlement calculation of soft soil foundation.

Key words:road widening;soft soil foundation;settlement deformation;consolidation theory

道路拓宽改造对邻近建筑地基变形影响分析与控制_王燕.pdf