Open AccessStudy on the improvement of the torsional bracing system designing process for steel shaped I simply supported beam bridge
Author(s) -
Khoa Nguyen,
Chu An Le Huynh,
Hai Dang Nguyen,
Nghia Dai Van,
Nam C. Nguyen,
Phuc-Khai Nguyen,
Thanh Huynh
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/682/1/012045
Subject(s) - bracing , structural engineering , girder , bridge (graph theory) , buckling , engineering , process (computing) , compression (physics) , structural system , finite element method , computer science , materials science , brace , composite material , medicine , operating system
For a long time, the steel bridge structure has been concentrated in the highway and bridge construction industry because of several advantages like high strength material, simple manufacture, and rapid construction. However, this structure still has a few remarkable disadvantages when designing the bridge structure and one of them is the overall stability of the main girders in the construction stage. This research illustrates that a system of discrete bracing along the girders’ length adopted to handle the problem effectively. From the result, the optimally designing process of the bracing system for Steel I girder simple span bridges verified against the finite element method (FEM). However, the frame forming the bracing system has not been checked by the specific process yet, especially the compressuon member, which can cause the instability of each bracing appurtenance in both the construction and exploitation stage. Therefore, the continuing research significantly adds checking the load capability and buckling of compression frames. The expected result in this research is as follows: 1) Checking members of the bracing system added in the design process. 2) The members of the bracing system promote their ability of resisting the lateral-torsional displacement of girders, and their strength ensured. 3) Designing the intermediate bracing system (IBS), which based only on the overall stability of bridge structure without caring about the strength of its members, is not enough.