Experimental Research On Mechanic Behavior For Anchorage Zone Of Main Cable Of Self-anchored Suspension Bridge

Self-anchored suspension bridges are increasingly appreciated by engineers for their aesthetic look, low cost and high adaptability. Many self-anchored suspension bridges have been completed or are in construction in the world. The anchorage zone of main cable is a key part for self-anchored suspension bridges, where the concentrated force of main cable will be transferred to the girder that make the strength state very complicated in this area. Therefore, analysis of strength performance at anchorage zone segment of self-anchored suspension bridge main cable has been attracted attention in bridge engineering all the time and anchorage zone of main cable is also the difficult and important part in designing and constructing of self-anchored suspension bridges. Based on Lie De Bridge at GuangZhou, clear numerical analysis and reliable large scale(1:4) model test for anchorage zone of main cable on girde were carried out in this paper. The main works and results in this paper is described as follows:(1) This paper introduces phylogeny and application actuality inland and abroad, summarizes the construction and forcing charactertistic. Also, the typical anchorage structures inland and abroad are summarized.(2) This paper introduces model tests of anchorage structures inland, discusses the harvest of experimental research, summarizes the experience and rule of model tests, and indicates the existed problems and developing trend of experimental research.(3) This paper utilizes ANSYS to analyze the anchorage zone segment of main cable in the actual bridge and experimental model, and investigate stress distribution and deformation at the area.(4) Model test of the anchorage zone segment of main cable was done to clear the strength performance and deformation at the segment. Through comparison of the experiment results and the finite element analysis result of the model, the correctness of theoretical analysisi is verified and it is validates that this anchorage system is safe and reliable. At the same time the results can direct the construction of the bridge.