The Research About Aqueduct Bridge's Vibration Reduction Technology Of SNWTP By The Condition Of Structure-liquid Couping

The South-North Water Transfer Project(SNWTP) belongs to the important project of our country, there will be an great effect to the places where loss of water such as northern China and upper stream of the yellow river when the project to start using, that's the significant strategy way of making the economy to last to developed.Aqueduct bridge is one of the main intersect buildings which widely used in midline of SNWTP ,and grave earthquake will be happen if aqueduct bridge being damaged. That is to say it's depends on the capability of earthquake resistant which caused to the project can revolve normally or not and the safety of people who live along the building site. Water power department make the 'The research of shock absorption and isolated technology in the analysis of aqueduct bridge's response as to be the capital stock item of important technology development.There is little research achievement about the structure of aqueduct bridges neither in China nor abroad recently. The point during research is how to make mutual effect between analogy water body and structure, because the structure of aqueduct is space light duty, and the quality of the water body is very big so that it's unsimple to make mutual effect with .the aqueduct bridge.The article summarize the history of developing, the principle of using ,tendency at present and technology kinds about structure control, especially in introducing of technologic isolating and shock absorption in passivity control.In this paper, we introduced very much and compared elasticity damper and viscous clamper more according to the wildly use in structure control at present. The result is that viscous damper be recommended.We use our own programme that named "FEP" in calculates of all the article, and with the mechanics model of viscous damper cell is to be put up, it can simulate the viscous damper in different parameters of damping, and I instructed the formula of calculation and give the resemble way of which is applicable to the structure-liquid couping analysis. We get the engage result after simulating structure-liquid couping then compared with the dynamic receptance and condition monitor.we built a finite element model of one aqueduct bridge, and compared the data of earthquake resistant experiment of China Institute of Water Resources and Hydropower Research (IWHR)with my own result, that's make sure they were engaged.We make some research of shock absorption according to the aqueduct bridge model,and use several ways of make different dampers in different parts to set up the parameter, from that I sum up the position of aqueduct bridge shock absorption install and the regularity of how parameter can effect shock absorption. Last step is to compute 71evel-3direction manpower wave incitation about the structure of the aqueduct bridge to study the displacement and stress of every parts about shock absorption.The safety about aqueduct bridge in project is a composite and compound problem, that's related to many sides such as isolated. shock absorption and structure-liquid couping.as to be a part of the capital stock item of nature science, the article just contains some words and research about damping shock absorption and structure-liquid couping these only two sides, and we have explained for the insufficient in the last part also we point out that we need to do the research wilder and deep in the future.