The Use Of Mechanical And Electric Measuring Technology On Model Test

Mechanical and electric measuring technology is more and more important in scientific research, national defence and other fields. Presented in this thesis is a model test of concrete-filled steel-tube arch truss bridge. We design a force measuring system and vibration measuring system to have the test. This thesis includes some contents:(1). The model is designed and manufactured by using similarity theory.(2). We manufacture the force sensor and design the force measuring system which can measure force quickly and exactly.(3). We design the vibration measuring system which can measure the vibration and analyze the data. So we can get the horizontal and vertical frequency, damp and swing of different modal.(4). Having the model test for concrete-filled steel-tube arch truss bridge. By simulating the construction procedure, the rule of internal force and load affecting the important node is gained. The static performance is evaluated pertinently through doing the static experiment of the whole bridge. We manufacture another model which span is the twice long as the Tianzishan bridge and analysis the stability in the maximal cantalever state. Using the way of modal analysis, We do the vibrating test and get the horizontal and vertical frequency, damp and swing of different modal. The dynamic performance is evaluated pertinently and the rule of internal force affecting the dynamic performance is gained.Based on the model test, analyzed in finite element program, the force measuring system and vibration measuring system is fit for the model test. The success of model test gives credible data to the design of this bridge and the model test of the same type bridge.