Mechanical Behaviors Study Of Cable-Pylon Steel-Anchorange-Beam In Anchor Zone Of Jiujiang Changjiang River Highway Bridge

In the designing of cable stayed bridges, one must take the problems of the anchor of the cable support towers brought by the hyperdispersion、eleastic-plasticity、construction technology of steel and concrete. The structure and the conductivity of force are both very complicated inside the anchor, this brings the bridge buliders lots of new tasks to do in the analysis of the cable stayed bridge designing and its structure. This issue will discuss the analysis of3D finite element together with model test based on Jiujiang Changjiang Highway Bridge to carry out the research of features of anchorage zone when bearing force. It mainly includes:(1) Introducing how the composite structure could be used in cable stayed bridges and summarized the differences when composite structure working under different conditions and in different position.(2) Giving the analysis of the force effects of anchorage zone of steel anchored beam cabled stayed bridge and its stress mechanism.(3) Using3D modeling of cable anchorage zone by ansys to find out the key positions and working conditions. Focusing on analyzing of stress in the concrete around steel corbels、 steel anchored beams and cable holes.(4) Based on the analysis of3D finite model, and the partial1:1model test of the27th segment of the south cable support tower which lay heavy stress on analyzing of stress in the concrete around steel corbels、 steel anchored beams and cable holes. Then this issue presents the contrast of experiment value and actual value so as to conclude the discipline when these parts of the whole structure working under stress.