铁道标准设计2018，Vol.62Issue(2)：128-133,6.DOI:10.13238/j.issn.1004-2954.201707100006
地铁隧道盾构施工对桩箱建筑物影响研究
Study on the Influence of Metro Tunnel Shield Construction on the Pile Box Building
李方明 1陈国兴2
作者信息
- 1. 中国地震局工程力学研究所,哈尔滨150080
- 2. 南京工业大学岩土工程研究所,南京210009
- 折叠
摘要
Abstract
In order to ensure the safety of metro double track shield tunneling under pile box foundation buildings,the finite element software ABAQUS is used to establish the calculation model and simulate the law of additional pile foundation and foundation soleplate deformation and the additional internal forces in terms of different pile length,pile diameter and rate of soil loss and under different working conditions so as to provide references for the design of tunneling under pile box foundation buildings.The results showed that:(1) with the increase of the pile length,the vertical deformation of the foundation soleplate and the additional bending moment gradually become smaller,and the vertical additional bending moment of the foundation soleplate appears maximum value at the top of the pile;the 3 号 pile (right track tunnel on the left) increases with the increasing of pile length,the maximum horizontal displacement of the pile body,the additional bending moment and the additional axial force decrease gradually;(2) with the increase of the pile diameter,the vertical additional deformation of the foundation soleplate gradually increases,the additional bending moment of 3-号 pile decreases gradually;(3) with the increase of the soil loss rate,the vertical additional deformation of the foundation soleplate becomes larger,the additional bending moment of 3 号 pile increases gradually;(4) after the completion of construction,the deformation of the remaining piles is the largest in the two row piles near the tunnel except 4 号 pile (between the two tunnels),the farther away from the tunnel,the smaller the pile deformation;the final additional horizontal deformation of 4 号 pile body tends to appear in the pre-excavated left track tunnel.关键词
地铁/隧道/底板/附加变形/附加弯矩Key words
Metro/Tunnel/Soleplate/Additional deformation/Additional bending moment分类
交通工程引用本文复制引用
李方明,陈国兴..地铁隧道盾构施工对桩箱建筑物影响研究[J].铁道标准设计,2018,62(2):128-133,6.
