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《Journal of Sichuan University(Engineering Science Edition)》 2013-01
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Seismic Damage Analysis of U-shaped Aqueduct with the Bent-type Structure Subjected to Strong Earthquake

ZHANG She-rong,FENG Yi*,WANG Gao-hui(State Key Lab.of Hydraulic Eng.Simulation and Safety,Tianjin Univ.,Tianjin 300072,China)  
The bent-type aqueduct structure is prone to injury under strong earthquakes,and the structure's overall anti-seismic performance changes.Based on the concrete plastic damage constitutive model,the equivalent spring model was applied to stimulate the SSI while a temperature drop process was applied to stimulate the effect of pre-stressed steel bars in the aqueduct.In addition,the overall anti-seismic performance of bent-type aqueduct structure was studied through analyzing the dynamic response law and damage development process of a large bent-type U-shaped aqueduct under strong earthquakes by applying time-domain analysis.The research results indicated that under strong earthquakes,the bent frame joints are the anti-seismic weak parts of aqueduct,while overall damage of groove body is less likely.For bent-type aqueduct structures which are located in areas with high seismic intensity,main attention should be paid to the anti-seismic safety of the lower part of the support structure.
【Fund】: 国家创新研究群体科学基金资助项目(51021004)
【CateGory Index】: TV672.3
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