[1]余 炜,高品红,陈 刚.深基坑开挖对周边环境影响范围的数值模拟研究[J].华南地震,2023,(03):145-153.[doi:10.13512/j.hndz.2023.03.17]
 YU Wei,GAO Pinhong,CHEN Gang.Numerical Simulation Study on Influence Range of Deep Foundation Pit Excavation on Surrounding Environment[J].,2023,(03):145-153.[doi:10.13512/j.hndz.2023.03.17]
点击复制

深基坑开挖对周边环境影响范围的数值模拟研究()
分享到:

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2023年03期
页码:
145-153
栏目:
土木工程防震减灾
出版日期:
2023-09-20

文章信息/Info

Title:
Numerical Simulation Study on Influence Range of Deep Foundation Pit Excavation on Surrounding Environment
文章编号:
1001-8662(2023)03-0145-09
作者:
余 炜高品红陈 刚
浙江华东建设工程有限公司,杭州 310012
Author(s):
YU WeiGAO PinhongCHEN Gang
Zhejiang Huadong Construction Engineering Co., Ltd., Hangzhou 310012, China
关键词:
深基坑开挖有限元模拟本构模型沉降监测
Keywords:
Deep foundation pit excavation Finite element simulation Constitutive model Settlement monitoring
分类号:
TU443
DOI:
10.13512/j.hndz.2023.03.17
文献标志码:
A
摘要:
为研究深基坑开挖对周边环境的影响范围,以泉港地下储粮库项目工程为背景,利用三维岩土工程有限元软件PLAXIS3D进行数值模拟,对比了摩尔—库仑(M-C)本构模型和高级硬化本构模型(HS本构模型)对模型沉降变形的影响。同时计算了逐级开挖基坑变形影响范围以及监控点的沉降和水平合位移曲线。研究结果表明:从位移量值来看,基坑开挖引起的水平变形远大于沉降变形,水平变形与沉降变形的比值,约为4∶1;基坑开挖过程中降排水引起的地表沉降变形影响范围较大,但量值较小;而土体开挖引起的变形较大,但变形影响范围有限,仅限于基坑周边一定距离;采用M-C本构模型与HS本构模型,得到的变形规律基本一致。
Abstract:
In order to study the influence range of deep foundation pit excavation on the surrounding environment, taking the Quangang Underground Grain Storage Project as the background, the three-dimensional geotechnical finite element software PLAXIS3D was used for numerical simulation,and the influence of the Moore-Coulomb(M-C)constitutive model and the advanced hardening constitutive model(HS constitutive model)on the settlement and deformation of the model was compared. At the same time,the influence range of foundation pit deformation by the progressive excavation and the settlement and horizontal displacement curves of the monitoring points are calculated. The results show that: From the displacement value, the horizontal deformation caused by foundation pit excavation is much greater than the settlement deformation,and the ratio of horizontal deformation to settlement deformation is about 4∶1; during the foundation pit excavation, the influence range of surface settlement deformation caused by dewatering and drainage is large, but the value is small; the deformation caused by soil excavation is relatively large,but the influence range of deformation is limited,which is only limited to a certain distance around the foundation pit; the deformation laws obtained by using M-C constitutive model and HS constitutive model are basically consistent.

参考文献/References:

[1]梁佳佳.地下水封石油储备库工程地质条件分析及空间布置优化设计研究[D].济南:山东大学,2017.
[2]欧阳顺,陈云,黄雪阳.基坑开挖对下卧地铁隧道影响的数值分析与研究[J].四川水泥,2022(12):226-228.
[3]文杰,郭平,孙梦尧,等.深基坑开挖对相邻共墙基坑影响规律研究[J].工程建设,2022,54(10):1-6.
[4]张婉吟,孙昌利,张挺,等.紧邻地铁深基坑开挖对周边环境影响分析[J]. 广东水利水电,2022(10):69-74.
[5]黄翔宇,李顺群,芮子航,等.基坑开挖对临近土体三维应力的影响研究[J].水资源与水工程学报,2022,33(06):189-195.
[6]赵平,王占棋.深基坑开挖引起的地表沉降变形分析[J].安徽工程大学学报,2022,37(05):73-79.
[7]徐中华,王卫东.敏感环境下基坑数值分析中土体本构模型的选择[J].岩土力学,2010,31(01):258-264+326.
[8]葛鹏,周爱兆.常用土体本构模型在复杂环境深基坑数值计算中的选用[J].地质学刊,2020,44(Z1):192-197.
[9] Zhao X,Zhu Q. Analysis of the surface subsidence induced by sublevel caving based on GPS monitoring and numerical simulation[J]. Natural Hazards,2020,103(3):3063-3083.
[10] Rehman S,Sahana M,Dutta S,et al. Assessing subsidence susceptibility to coal mining using frequency ratio,statisti?cal index and Mamdani fuzzy models:evidence from Rani?ganj coalfield,India[J]. Environmental Earth Sciences, 2020,79(16):1-18.
[11]胡海英,张玉成,杨光华,等.基坑开挖对既有地铁隧道影响的实测及数值分析[J]. 岩土工程学报,2014,36 (S2):431-439.
[12]左殿军,史林,李铭铭,等.深基坑开挖对邻近地铁隧道影响数值计算分析[J]. 岩土工程学报,2014,36(S2):391-395.
[13]郭秋.基于花岗岩非均质性压缩破坏及流固耦合数值模拟研究[D].青岛:青岛理工大学,2018.
[14]李博识.基于流固耦合的盾构隧道施工对地下管线变形的影响研究[D].郑州:郑州大学,2017.
[15]丁俊凯.基坑开挖对侧方既有盾构隧道影响的数值分析[D]. 舟山:浙江海洋大学,2019.
[16]颜超.基于Midas GTS分析深大基坑开挖对邻近建筑物的影响[J].建筑施工,2021,43(06):1131-1134.
[17]江杰,张探,欧孝夺,等.软土地基基坑开挖对临近桩变形影响的时效分析[J]. 湖南大学学报(自然科学版), 2022,49(11):206-215.

相似文献/References:

[1]王玉君,沈朝勇,黄襄云.厚层橡胶隔震支座竖向刚度计算及其影响因素分析[J].华南地震,2023,(02):132.[doi:10.13512/j.hndz.2023.02.15]
 WANG Yujun,SHEN Chaoyong,HUANG Xiangyun.Vertical Stiffness Calculation of Thick Rubber Bearing and Its Influencing Factors Analysis[J].,2023,(03):132.[doi:10.13512/j.hndz.2023.02.15]
[2]张搏翔,宿凇林,宿文姬,等.基于有限元与LSTM机器学习模型的边坡稳定性预警分析[J].华南地震,2024,(02):61.[doi:10.13512/j.hndz.2024.02.08]
 ZHANG Boxiang,SU Songlin,SU Wenji,et al.Early Warning Analysis of Slope Stability Based on Finite Element and LSTM Machine Learning Model[J].,2024,(03):61.[doi:10.13512/j.hndz.2024.02.08]

备注/Memo

备注/Memo:
收稿日期:2023-02-10
基金项目:国家自然科学基金项目(51678352)
作者简介:余炜(1986-),男,工学硕士,高级工程师,主要从事岩土工程设计及研究工作。E-mail:yu_w3@hdec.com
更新日期/Last Update: 2023-09-20