Stability analysis of braced structures under jacking construction of large span steel truss bridges. Issue 7 (October 2021)

• Record Type: Journal Article
• Authors: Li, Peinan; Liu, Xue; Dai, Zeyu; Wang, Qi; Yuan, Tiansi
• Is Part Of: IOP conference series. Volume 861:Issue 7(2021)
• Publication Date: 2021-10
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/861/7/072064
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: In this paper, the integral jacking control technology is innovatively proposed based on the renovation project of the Pudong Canal steel truss bridge in Luoshan Road Longdong Avenue-G1501 section in Shanghai. The steel trusses have complex loading effects on the support during jacking construction, so the stability of the support and foundation structure is under great threat. By establishing a steel truss bridge-support finite element model, the stresses of support structures under combined loads are studied, and a random combination of settlement is used to provide a theoretical basis for support compensation control. In the real project, the monitoring results match well with the finite element calculation results. In the project, the maximum settlement should be controlled to be less than 20 mm and the uneven settlement less than 5 mm, and the settlement difference between adjacent support needs to be reduced by settlement compensation devices when the settlement is larger.