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[1]叶永富,曾 卫*.新建人行桥桩基对已有地铁隧道位移影响的数值分析[J].武汉工程大学学报,2022,44(06):700-705.[doi:10.19843/j.cnki.CN42-1779/TQ.202104026]
 YE Yongfu,ZENG Wei*.Numerical Analysis of Effect of Pile Foundation of New Foot Bridge on?Displacement of Existing Subway Tunnel[J].Journal of Wuhan Institute of Technology,2022,44(06):700-705.[doi:10.19843/j.cnki.CN42-1779/TQ.202104026]
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新建人行桥桩基对已有地铁隧道位移影响的数值分析(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
44
期数:
2022年06期
页码:
700-705
栏目:
资源与土木工程
出版日期:
2022-12-31

文章信息/Info

Title:
Numerical Analysis of Effect of Pile Foundation of New Foot Bridge on?Displacement of Existing Subway Tunnel

文章编号:
1674 - 2869(2022)06 - 0700 - 06
作者:
叶永富曾 卫*
佛山科学技术学院交通与土木建筑学院,广东 佛山 528000
Author(s):
YE YongfuZENG Wei*
School of Transportation,Civil Engineering & Architecture,Foshan University,Foshan 528000,China
关键词:
桩基数值模拟隧道施工影响
Keywords:
pile foundation numerical simulation tunnel construction impact
分类号:
TU753.3;U231
DOI:
10.19843/j.cnki.CN42-1779/TQ.202104026
文献标志码:
A
摘要:
随着城市建设不断推进,新建人行桥桩基不可避免会临近已有隧道,桩基施工会对隧道造成不利影响。进行多次原位实验研究桩基施工对隧道的影响,耗费大量精力,故采用数值模拟方法进行研究分析。本文通过对比模拟研究了桩基施工过程中,桩径、桩深和桩-隧道间距对隧道结构的影响。结果表明:近邻桩基施工主要引起隧道结构向下的位移,同时对邻近桩基一侧隧道产生挤压;影响因素中最显著为桩基与隧道的距离,当桩基与隧道的距离从17.65 m增加至22.65 m时,桩径和桩端深度变化对隧道产生的影响减小;桩径减小时,靠近桩基一侧的隧道产生的位移减小,远离桩基一侧的隧道产生的位移会增大;桩端深度越大,则桩基施工对隧道产生的位移越小;当隧道与桩基距离较近时,相较于桩端深度,桩径变化会对隧道产生更大的影响。
Abstract:
The pile foundation of the newly constructed foot bridge will be inevitably close to the existing tunnel with the continuous development of urban construction, which may have a negative impact on the tunnel. Experimental studies of the influence of pile foundation on tunnel are time consuming and expensive, therefore, the numerical simulation method was adopted for the research and analysis. The impacts of pile diameter, pile bottom depth and pile-tunnel distance on the tunnel structure were studied. The results show that the construction of pile foundation mainly causes the downward displacement of tunnel and compresses the tunnel on the side of adjacent pile foundation. The most significant factor is the distance between pile foundation and tunnel. The influences of pile diameter and pile bottom depth on tunnel decrease when the distance between pile foundation and tunnel increases from 17.65 m to 22.65 m. The displacement of tunnel generated by the pile construction changes with the decrease of pile diameter. The displacement on the side close to the pile decreases, whereas the displacement on the side farther from the pile increases. The displacement of tunnel generated by the pile construction decreases when the pile bottom depth increases. The change of the pile diameter has a greater impact on the tunnel than the change of pile bottom depth when the distance between the tunnel and the pile foundation is short.

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备注/Memo

备注/Memo:
收稿日期:2021-04-20
基金项目:广东省基础与应用基础研究基金(2020A1515111137)
作者简介:叶永富,硕士研究生。E-mail:[email protected]
*通讯作者:曾 卫,博士,讲师。E-mail:[email protected]
引文格式:叶永富,曾卫. 新建人行桥桩基对已有地铁隧道位移影响的数值分析[J]. 武汉工程大学学报,2022,44(6):700-705.

更新日期/Last Update: 2023-01-09