Research On The Structural Characteristics Of Steel-Concrete Composite Segment In The Tower Of Nanjing Yangtse 3RD Bridge

In the steel-concrete composite segment of the 3rd Nanjing Yangtze River Bridge's tower, the PBL shear connectors have been utilized inland firstly. With a difference in flexible shear connectors used in composite steel-concrete beams, the axial force transferred by the shear connectors from steel to concrete is very large, and the dimension of the composite segment is small. The force transfer mechanism of this PBL shear connectors has not been cognized intuitively inland. Therefore, this thesis adopts the method of model test and finite element simulated analysis to study the static characteristics of the structure. The main work has been done as follows:1. The structural characteristics of the steel-concrete composite segment has been analysed;2. The interaction among the multilayer shear connectors has been discussed. Under the condition of the multilayer, the load on every layer shear connector and the mechanism of the shear connectors have been studied;3. The carrying force distributes of every layer shear connector has been discussed. The situation of the load percentage on every layer shear connector with the load alternation under the different loads has been studied;4. The mechanics action of the different parts of the steel-concrete composite segment of the bridge tower has been discussed under the designed loads ;5. The deformation regular of the steel-concrete composite segment has been analysed under the different loads;6. The influence of different parameters to the structural characteristic of the steel-concrete composite segment has been analysed;...