201. Design and Research of Large-span Structure without Column for the Public Area of Intercity Railway Station.
- Author
-
MENG Jiao
- Subjects
PUBLIC spaces ,COLUMNS ,RAILROAD stations ,BENDING moment ,UNDERGROUND construction ,COMPOSITE columns - Abstract
During the construction of the Nansha-Zhuhai-Zhongshan Intercity Railway in the Greater Bay Area, in order to meet the requirements including platform yield distance, platform floor layout in the public area of the Qijiangxincheng station, and optimize the station scale and spatial visual effect, the public area was designed without columns. At present, the engineering experience of adopting the concept of no column in the underground structure of intercity railway is insufficient. The span of the station on the third underground floor is 22.9 m, which leads to questions including component stress design, section selection, anti-floating design, etc. Based on the scheme design of the project, this paper used the numerical simulation method to analyze the design scheme under various working conditions by comparing the stress results of the bottom uplift pile setting and the roof structure. The results show that: The bending moment at the midspan and bearing decreases by 67.5% and 69.4% respectively after the bottom plate is set with double rows of uplift piles. The bending moment of the bottom plate only increases 4.2%, and the scheme has more advantages in terms of construction and economy. In the section type of roof camber, the bending moment of roof midspan can be reduced by 63.85%, and the bending moment of support can be reduced by 51%, which can significantly improve the structural stress. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF