Study Of Tied Arch Bridge Short Suspenders Space The Force Characteristics And Damage Mechanism

Under the deck of Tied Arch Bridge construction started late, at this stage, thesebridges suspenders has not yet fully exposed, paid insufficient attention to the problemsof the suspenders, the research is lagging behind, left and right sides short suspendersoften in suspenders, column and arch rib special position of the junction, causing thebending stiffness of the short suspender to be much larger than the other suspender,making the short suspender to adapt to the ability to deform the ability to adapt todeformation lot worse than other suspender. Thus creates tied arch bridge often underloads short suspenders fracture accident.Based on the short suspender Tied Arch Bridgeimportance, The main contents of this paper are as follows:1.A brief description of the development of Tied Arch Bridge,Tied Arch Bridgesuspenders for the various situations described briefly,summarizes the tied arch bridgesuspender short research status.2.Through reading and study abroad information, summarizes and analyzes theshort boom tied arch bridge structural behavior and its influencing factors.3.Taking a tied arch bridge, for example, by the finite element software MIDAS/CIVIL establish comparative analysis of the full bridge model tied arch short suspendersat dead load, vehicle load, temperature changes, the role of ultimate limit state axialforce, with other suspenders as well as other additional forces differences situation.According to various loads node changes suspenders ends with a reasonable simplifyingand assumption by the finite element analysis software ANSYS simulation shortsuspenders suspenders unconsolidated entities segment stress, stress amplitude changes.4.Depending on additional internal forces between suspenders and the stressamplitude preliminary discussions law tied arch fatigue damage law short suspendersand environmental impact of corrosion for a short suspenders.The main findings:1.The results show that the short suspenders Tied Arch Bridge at dead load,automotive, temperature, load capacity limit state under the effect of deformationcaused by rib and deck differences, resulting in additional short suspenders ends byadditional bending moment and shear force other than the additional shear suspenderswith additional moments to be much larger.2.The results show that Tied Arch Bridge at dead load, automotive, temperature,under ultimate limit state and non-consolidation Consolidation segment segment handover region appeared more obvious stress concentration. Short suspenders of themaximum stress and stress concentration in the consolidation period and unconsolidatedsegment connecting the region’s bigger than the other more obvious suspenders.3.suspenders in under repeated alternating stress, fatigue crack was seen in thesuspenders head and the cable connecting the anchor within the area of high stressconcentration area.4.Environment of high stress concentration accelerated corrosion fatigue crackgrowth region, fatigue cracks also accelerated environmental corrosion rate of the shortsuspenders.