Research on deformation laws of existing subway viaducts undertravesed by deep road foundation pit using pile underpinning technology

Hua Peng; Xu Peng; Guan Wang; Haiyang Li; Wenhui Ma; Xiaoqi Xiao; Haiyang Wu; Zhijing Huo

doi:10.1117/12.2619728

22 December 2021 Research on deformation laws of existing subway viaducts undertravesed by deep road foundation pit using pile underpinning technology

Hua Peng, Xu Peng, Guan Wang, Haiyang Li, Wenhui Ma, Xiaoqi Xiao, Haiyang Wu, Zhijing Huo

Author Affiliations +

Proceedings Volume 12058, Fifth International Conference on Traffic Engineering and Transportation System (ICTETS 2021); 120582Y (2021) https://doi.org/10.1117/12.2619728
Event: 5th International Conference on Traffic Engineering and Transportation System (ICTETS 2021), 2021, Chongqing, China

Abstract

There are many projects of road foundation pit underneath railway viaduct, but few studies considering the joint effect of pile foundation underpinning and road deep foundation pit. To study the deformation laws of existing subway viaduct undertraversed by deep road foundation pits using pile foundation underpinning technology, based on a project of a road deep foundation pit undercrosses the subway viaduct in Beijing using the pile foundation underpinning technology, the pile foundation underpinning scheme is determined by numerical simulation. Combined with the monitoring data, the deformation laws of the structure under the existing bridge are analyzed, and the feasibility of the pile foundation underpinning scheme is verified. The calculation results are as follows: 1) The pile underpinning parameters obtained by numerical simulation can meet the deformation requirements of existing piers during construction, In the pile underpinning stage, the maximum vertical deformation of the bridge pier is 1.904 mm, which occurs at the pier of the pile foundation underpinning. 2) In the excavation stage of foundation pit, the maximum vertical deformation of the pier is -2.982 mm, which occurs at the pier near the foundation pit of the road. 3) The numerical simulation results are consistent with the insite monitoring data.

Citation Download Citation

Hua Peng, Xu Peng, Guan Wang, Haiyang Li, Wenhui Ma, Xiaoqi Xiao, Haiyang Wu, and Zhijing Huo "Research on deformation laws of existing subway viaducts undertravesed by deep road foundation pit using pile underpinning technology", Proc. SPIE 12058, Fifth International Conference on Traffic Engineering and Transportation System (ICTETS 2021), 120582Y (22 December 2021); https://doi.org/10.1117/12.2619728

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Roads

Numerical simulations

Bridges

3D modeling

Safety

Resistance

General applications engineering

Show All Keywords

Keywords/Phrases

Search In:

Publication Years