Construction Technology of Underpinning and Pre-supporting Pile Foundation of Special-shaped Slab Beam in Urban Interchange

DU Liang

Article ID: 2581
Vol 2, Issue 2, 2022
DOI: https://doi.org/10.54517/vfc.v2i2.2581
VIEWS - 44 (Abstract)

Download PDF

Abstract

With the rapid development of China's urbanization process, the original transportation plan cannot fail to meet the needs of urban economic development, and the transformation and upgrading of the urban transportation system is imminent. Urban rail engineering has become the only way to solve traffic problems in major core cities. However, conflicts between subway shield tunnels and existing building foundations occur from time to time, especially when some important buildings and public facilities cannot be demolished, underpinning technology is required. This paper relies on the Shijiazhuang Metro Line 2# underpassing the urban overpass special-shaped slab beam construction and bridge project built in 1994, combined with the past pile foundation underpinning and current intelligent construction technology, in the multi-support prestressed concrete special-shaped slab beam substructure pile foundation Intelligent pre-supporting technology is adopted in the underpinning construction process, which solves the problem of synchronous control of multi-supporting special-shaped slab girder under complex environment, and ensures the safety of construction and bridge operation.


Keywords

Urban interchange; Special-shaped slab beam; Underpinning of pile foundation; Intelligent pre-supporting technology.


References

Wang Liping. Design and optimization of pile buttress replacement for large span tunnels through high-rise buildings [J]. Journal of Underground Space and Engineering, 2012(5):1070-1075.

Liu Xiaozhong. Research on risk assessment and control measures of bridge pile foundation replacement construction [J]. Guangdong Civil Engineering and Construction, 2013.

Meng Qingjun. Construction technology of bridge pile foundation replacement in Chengdu Metro River [J]. Tunnel Construction, 2011.

Zhou Fengmin. Construction Technology of Pile Base Replacement under Pile Base in Shield Interval of Guangzhou Metro Line 5 [A]. Shanghai Civil Engineering Society, Shanghai Tunnel Engineering Co., Ltd, Underground Engineering Construction and Risk Prevention Technology-2007 Third Shanghai International Tunneling Symposium Proceedings [C]. Shanghai Civil Engineering Society, Shanghai Tunnel Engineering Co.

Zhou Guannan, Zhou Shunhua, Hou Gang, et al. Study on the effect of pile buttress replacement in neighboring shield construction [J]. Journal of Underground Space and Engineering, 2010.

Yan Jilong. Discussion on the design scheme of a subway station with underpassing river and bridge foundation [J]. Railway Standard Design, 2016(5):116-120.

Refbacks

  • There are currently no refbacks.


Copyright (c) 2024 DU Liang

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.