[1]江飞龙,吴昊,刘家树,等.古盐河旧涵洞邻近基坑降水-开挖扰动稳定性响应研究[J].江苏水利,2025,(10):21-25.
 JIANG Feilong,WU Hao,LIU Jiashu,et al.Study on the stability response of precipitation-excavation disturbance in the adjacent foundation pit of the old culvert of the Ancient Yan River[J].JIANGSU WATER RESOURCES,2025,(10):21-25.
点击复制

古盐河旧涵洞邻近基坑降水-开挖扰动稳定性响应研究()

《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2025年10期
页码:
21-25
栏目:
水利规划与设计
出版日期:
2025-10-01

文章信息/Info

Title:
Study on the stability response of precipitation-excavation disturbance in the adjacent foundation pit of the old culvert of the Ancient Yan River
文章编号:
1007-7839(2025)10-0021-0005
作者:
江飞龙吴昊刘家树李卉林旭
(淮安市水利勘测设计研究院有限公司,江苏 淮安 223005)
Author(s):
JIANG Feilong WU Hao LIU Jiashu LI Hui LIN Xu
(Huai’an Water Conservancy Survey Design and Research Institute Co., Ltd., Huai’an 223005, China)
关键词:
涵洞基坑开挖降水沉降
Keywords:
culvert excavation of foundation pits precipitation sedimentation
分类号:
TV551
文献标志码:
A
摘要:
为评估淮河入海水道古盐河穿堤涵洞工程中基坑开挖与降水对既有涵洞稳定性的影响,研究基于MIDAS GTS NX建立土-结构全耦合模型,模拟3个阶段施工过程:①整体卸荷(覆土开挖至统一高程);②降水(地下水位大幅下降);③局部卸荷(新旧涵洞差异开挖)。结果表明:整体卸荷与局部差异卸荷引发地基回弹,而降水导致固结沉降,位移极值区稳定集中于2#~3#涵洞连接处;阶段三中邻近新基坑侧(2#-3#)剧烈回弹与远侧(1#~4#)微弱回弹形成显著非均匀变形,导致涵洞自身临界沉降差逼近规范限值;尽管整体变形满足规范要求,但2#~3#连接区沉降差突出,必须实施分级降水、预注浆加固及分层开挖等精细化控制措施以保障结构安全。
Abstract:
In order to evaluate the influence of foundation pit excavation and precipitation on the stability of the existing culvert in the Ancient Yan River embankment culvert project of the Huai River estuary, a soil-structure fully coupled model was established based on MIDAS GTS NX to simulate the three stages of construction process: (1) overall unloading (excavation of overlying soil to a unified elevation); (2) precipitation (a significant drop in groundwater level); (3) Local unloading (differential excavation of the old and new culverts). The results show that: overall unloading and local differential unloading cause foundation rebound, while the precipitation leads to consolidation settlement, and the extreme displacement area is stably concentrated at the joint of culverts 2#-3#; in Phase 3, the severe rebound on the side adjacent to the new foundation pit (2#-3#) and the slight rebound on the far side (1#-4#) form significant uneven deformation, resulting in the critical settlement difference of the culvert itself approaching the specification limit; although the overall deformation meets the specification requirements, the settlement difference in the 2#-3# connection area is prominent. Therefore, it is necessary to implement refined control measures such as staged precipitation, pre-grouting reinforcement and layered excavation to ensure structural safety.

参考文献/References:

[1]杜珊. 基坑开挖降水对周边建筑物的影响研究[D]. 郑州:华北水利水电大学,2023.
[2]任一青,陈保国,任国卿,等. 涵顶—涵侧减载条件下高填方箱涵施工期受力特性[J]. 岩土力学,2025,46(4):1153-1162.
[3]马飞,洪宝宁,刘鑫. 涵—土接触面参数对涵洞周围土压力的影响分析[J]. 南京工业大学学报(自然科学版),2018,40(2):132-136,144.
[4]喻义天,丁海滨,刘昆,等. 基坑开挖前坑内预降水对基坑变形的影响[J]. 公路交通科技,2024,41(3):72-82.
[5]张世民,景峰卫,黄英省,等. 基坑开挖及降水对坑外地表沉降的影响[J]. 土木建筑与环境工程,2016,38(5):43-49.
[6]陶志刚,秦可,米蒙,等. 基坑开挖扰动变形特征及控制效果模拟分析[J]. 科学技术与工程,2023,23(9):3820-3830.
[7]董必昌,张鹏飞,张明轩,等. 基于流固耦合效应的深基坑降水开挖变形规律研究[J]. 公路,2021,66(4):349-356.
[8]吴亚平,潘高峰,李帅,等. 高含盐饱和细砂土的蠕变特性[J]. 公路交通科技,2017,34(7):29-36.
[9]穆道贵,高伟,李胜. 基于MIDAS/GTS分析基坑开挖对邻近建筑物的沉降影响[J]. 中国水运,2022,22(22):133-135.
[10]池恒天,吴振宇,刘小志. 基于Midas GTS NX土的三种本构模型工程应用实例[J]. 岩土工程技术,2020,34(3):143-149.
[11]中国建筑书店. Midas/GTS在岩土工程中应用[J]. 岩土力学,2013(8):2413-2413.
[12]郑刚,宗超,曾超峰,等. 非对称基坑分步降水开挖引起 的围护结构变形性状[J]. 岩土工程学报,2013,35(增刊2):550-554.
[13]安璐,郑刚,魏少伟. 分层降水开挖对坑内土体变形影响的实测与试验分析[J]. 岩土工程学报,2008,30(增刊1):493-498.

相似文献/References:

[1]王 建,陈洪波,何书通,等.基坑开挖对基坑及围护结构稳定性影响分析[J].江苏水利,2021,(10):20.
 WANG Jian,CHEN Hongbo,HE Shutong,et al.Analysis on the influence of foundation pit excavation on the stability of foundation pit and retaining structure[J].JIANGSU WATER RESOURCES,2021,(10):20.
[2]薛晓,王建刚,刘国锋.锂电池电动启闭方式在小型手动闸门启闭机改造中的应用[J].江苏水利,2023,(11):39.
 XUE Xiao,WANG Jianggang,LIU Guofeng.Application of lithium battery electric opening and closing method in the transformation of small manual gate hoist[J].JIANGSU WATER RESOURCES,2023,(10):39.
[3]徐晨轩,朱承志,万青,等.水下机器人在入海水道通榆河立交工程涵洞的探查应用[J].江苏水利,2024,(06):61.
 XU Chenxuan,ZHU Chengzhi,WAN Qing,et al.Application of underwater robot in culvert exploration of Tongyu River interchange project of the estuary waterway[J].JIANGSU WATER RESOURCES,2024,(10):61.

备注/Memo

备注/Memo:
收稿日期:2025-07-28
作者简介:江飞龙(1995—),男,硕士,主要从事水利规划与设计工作。E-mail:1099259872@qq.com
更新日期/Last Update: 2025-10-01