Model Test On Anchorage Zone Of Self-anchored Suspension Bridge

Based on the concrete self-anchored suspension bridge in Chengdu to the background,the bridge is the first self-anchored suspension bridge in southwestern of China,the materal of its stiffening beams is concrete,the anchorage area take steel-concrete composite structure,In order to understand its mechanical characteristics and load transfer mechanism,and provide evidence for the design and operation management,A scale(1:2.5)anchorage model is tested for the anchorage area system design of the Qingshui River self-anchored suspension bridge.Based on the calculation theory of the self-anchored suspension bridge,finite element method,similitude theory,we summarized the method of the test and achievement of the corresponding bridge structure experiment,we have a research on theory analysis and model experiment of the anchorage area.The practical work is as following:(1)This thesis introduces phylogeny and application actuality inland and abroad,summarizes the basic construction and forcing characteristic and indicates the existed problems and developing trend of self-anchored suspension bridge.(2)This thesis summarize the cable anchorage system of self-anchored suspension bridge with the differren material.like the concrete stiffening girder,steel-concrete combination girder,steel stiffening girder.(3)designed model of the anchorage area according to the similitude theory,under the large-scale finite element analysis program ANSYS,created a model to analysis the stress of the anchorage area,making sure the survey points and load styles,the stress and strain of test were compared to the result of the calculation,verify the working station under the disadvantage design load.validate the reliability of the bond problems of steel-anchor-box and concrete,and summarize the force distribution rule.