Analysis Of Mechanical Properties Of Arch-leaning Cable-stayed Bridge Of Single Pylon

Cable-stayed bridge has become an important part of the long-span bridge type by itsgraceful shape and spanning capacity. The emergence of hybrid girder cable-stayedbridge to further increase the competitiveness of the cable-stayed bridge. Hybrid girderis composed of two materials along the length direction. Generally speaking, the mainspan is steel girder and the side span is concrete girder. As the times developed, newrequirements are proposed for bridge aesthetics. Thus, a variety of special-shapedcable-stayed bridges come into being. Although these cable-stayed bridges have niceappearance, the stress state is complicated.This paper take a cable-stayed bridge as background which is under construction, andthis bridge is hybrid girder cable-stayed bridge with tilting pylon which is also made bytwo kinds of materials. So, the bridge is in a very complicated stress state. A finiteelement model is established by MIDAS/CIVIL software to analyze the stress anddeformation of the pylon during the maximum cantilever construction stage. Meanwhile,the paper also analyze the effect of moving load and temperature load and their variousload combination to the pylon after the bridge is completed. Another finite elementmodel of pylon is established by ANSYS software to analyze the stress distribution andthe law of deformation under its own weight as well as prestressing and the largest cableforce. The result shows that both stress and deformation of the pylon meet therequirements. It also provides a reference and basis for the construction, load test andhealth detection.