ANTI-SEISMIC RELIABILITY ANALYSIS OF CONTINUOUS RIGID-FRAME BRIDGE BASED ON ANSYS
The continuous rigid-frame bridge with major bending rigidity and torsion rigidity is a continuous structure of the frusta-beam permanent connection. The complex shape of this structure, the special geographic and environmental conditions present one of the greatest challenges for structural engineers. In particular, its dynamic performance under earthquake or wind actions still requires more intensive research. The main objective of this paper is to investigate the earthquake-resistance performance of a continuous rigid-frame bridge under different seismic loads. To this end, an ideal finite element mechanical model of a continuous rigid-frame bridge was first constructed through the use of ANSYS codes. By using this model, the seismic spectrum analysis and the time history analysis were successively carried out to obtain the seismic behaviours of this continuous rigid-frame bridge. Based on the foregoing analysis results and the Monte-Carlo numerical method, the earthquakeresistance reliability was calculated in detail. From the results obtained, it is found that the largescale continuous rigid-frame bridge has a relatively high seismic-resistance capacity and could satisfy the design requirements under the action of earthquake excitations. The findings of this paper are useful in providing some guidelines on seismic analysis for other similar large-scale structures.
Anti-seismic reliability continuous rigid-frame bridge random variation Monte-Carlo method finite element analysis
Y.L.Jin
State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University Shanghai 200240, China
国际会议
The IJSSD Symposium 2012 on Progress in Structural Stability and Dynamics(2012国际结构稳定与动力学进展会议)
南京
英文
53-61
2012-04-14（万方平台首次上网日期，不代表论文的发表时间）