scholarly journals Analysis of influence of subway station deep foundation pit excavation on adjacent bridge piles

2020 ◽  
Vol 789 ◽  
pp. 012033
Author(s):  
B Li ◽  
W Sun ◽  
G K Li
Keyword(s):  
Subway Station ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit

Mechanical Analysis of Enclosure Pile under Different Constraints

2011 ◽  
Vol 90-93 ◽  
pp. 485-489
Author(s):  
Li Guo ◽  
Peng Li He ◽  
Guang Jun Zhang
Keyword(s):  
Mechanical Analysis ◽  
Subway Station ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Retaining Structure ◽  
Cantilever Structure ◽  
Reinforcement Measures

The enclosure pile is extensively used as retaining structure in the foundation pit excavation. And it is always combined with other reinforcement measures. So it is unreasonable to a certain degree that the enclosure pile is analyzed as cantilever structure. Taken the deep foundation pit of a subway station in Hefei for instance, the effect of other reinforcement measures on restrained conditions of enclosure piles in the paper was taken into account. And the behavior of enclosure pile under various restrained conditions was analyzed. Based on that, some helpful suggestions for practical retaining structure of foundation pit were put forward.

Numerical Simulation Program of the Foundation Pit

2012 ◽  
Vol 588-589 ◽  
pp. 1304-1307
Author(s):  
Qing Nian Yang ◽  
Shi Zhong Zhang ◽  
Yu Zhou Sima
Keyword(s):  
Numerical Simulation ◽  
Simulation Program ◽  
Subway Station ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Construction Period

In this paper, a deep foundation pit of one subway station is analyzed under two different precipitation conditions, and the deformation laws of the pit under one-time precipitation and step-by-step precipitation conditions are investigated. The results indicate that the deformations caused by one-time precipitation are significantly larger than the deformations caused by step-by-step precipitation. Therefore, a step-by-step precipitation scheme is preferred in order to reduce the deformation cause by foundation excavation, when construction period permits.

Affect of Large Deep Foundation Pit Dewatering on the Neighboring Buildings

2014 ◽  
Vol 580-583 ◽  
pp. 24-27
Author(s):  
Ke Wei Ding ◽  
Fan Zhao ◽  
Xiao Zhi Zhang
Keyword(s):  
Environmental Impact ◽  
Ground Water ◽  
Surface Subsidence ◽  
Subway Station ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Security Monitoring ◽  
Deep Foundation Pit

Take the ground-waterlowering of foundation pit project in DA Dongmen subway station in Hefei as an example, introduce a kind of environmental impact appraisal model,using softwareFLAC3D to imitate the key index--surface subsidence, offers relevant safe bases to construct security monitoring department.

Numerical Analysis of the Deformation Law of Deep Foundation Pit of Subway Station by FLAC3D

2014 ◽  
Vol 915-916 ◽  
pp. 62-67
Author(s):  
Ya Long Liu
Keyword(s):  
Structural Type ◽  
Operating Conditions ◽  
Subway Station ◽  
Horizontal Deformation ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Deformation Law ◽  
Bored Piles ◽  
Supporting Structures

Taking the deep foundation pit engineering of a Subway Station as background. The paper introduces the projects surroundings,geological and hydrological conditions of the proposed field and the retaining structural type. According to the engineering characteristics,the project was divided into four typical operating conditions,the deformation rules of deep foundation pit at subway station in tunneling are studied with the method of FLAC3D numerical simulation,the supporting structures choose by the bored piles and interior support. The analysis of the horizontal deformation of the retaining structures, the settlement law and the influence sphere of surrounding soil. The conclusion in this paper can provides reference for the reasonable design and safety construction of deep foundation pit.

Monitoring and Treatment during the Water Leakage Process of a Deep Subway Station Pit

2011 ◽  
Vol 94-96 ◽  
pp. 1951-1956
Author(s):  
Cong Shi Wu ◽  
Gong Liu ◽  
Wei Da Shen
Keyword(s):  
Underground Water ◽  
Subway Station ◽  
Deep Foundation ◽  
Water Leakage ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Supporting Structure ◽  
Axial Forces ◽  
Fundamental Reason

A remedy scheme of water leakage in the deep foundation pit of a subway station is introduced. The deformation and axial forces of the supporting structure as well as the underground water level were monitored during the leaking prevention process. At the same time, a plane model was developed to simulate the construction process of foundation pit by FEM. Then, the fundamental reason for the leaking of the foundation pit was analyzed by numerical results and in situ measured data. Furthermore, importance of the strength of the supporting structure to the excavation of the foundation pit was also detailed demonstrated. Finally, the remedy measures were put forward to prevent the water leakage, which were proved to be effective and feasible in practice.

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