Influence of curvature radius on mechanical properties of small and medium span continuous rigid frame bridge during construction stages

Authors

XIE Yangfu, Pengzhou City Construction Investment Group Co., Ltd., Chengdu, Sichuan 611930, ChinaFollow
YE Yuansheng, School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, Jiangxi 330013, China
GUI Shuirong, School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, Jiangxi 330013, China
YANG Yu, NO.2 Engineering Company of China Railway No. 8 Engineering Group Co., Ltd, Chengdu, Sichuan 610000, China

Abstract

In order to study the mechanical properties and the influence of curvature radius on the mechanical properties of curved rigid frame bridge constructed by span-by-span assembly method, this paper took the continuous rigid frame bridge with a two-box standard section (35 + 35 + 35) m of Hongdu Overpass in Nanchang City as the engineering background. By changing the curvature radius, the influence of curvature radius on the mechanical properties of small- and medium-span continuous rigid frame bridges constructed by span-by-span assembly method during construction was studied. The results show that the mechanical properties such as the main beam stress, vertical displacement, lateral displacement, torque, and bottom stress of the established front span will be affected by the construction of the rear span in the application of the span-by-span assembly method, and the influence increases with the decrease in the curvature radius. When the curvature radius is too small, the mechanical indexes are easy to exceed the safe allowable values. By considering the mechanical properties in the design and construction phase, the curvature radius of such bridges should not be less than 75 m.

Publication Date

3-17-2023

DOI

10.14048/j.issn.1671-2579.2023.01.016

First Page

99

Last Page

103

Submission Date

March 2025

Recommended Citation

Yangfu, XIE; Yuansheng, YE; Shuirong, GUI; and Yu, YANG (2023) "Influence of curvature radius on mechanical properties of small and medium span continuous rigid frame bridge during construction stages," Journal of China & Foreign Highway: Vol. 43: Iss. 1, Article 60.
DOI: 10.14048/j.issn.1671-2579.2023.01.016
Available at: https://zwgl1980.csust.edu.cn/journal/vol43/iss1/60