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Method of Determining Prestressing Force of Cable Dome Based on Whole Process Analysis of Cable Dome Tensioning and Bearing
Method of Determining Prestressing Force of Cable Dome Based on Whole Process Analysis of Cable Dome Tensioning and Bearing
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机译:基于索穹顶张拉与承载全过程分析的索穹顶预应力确定方法
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摘要
A method of determining a prestressing force of a cable dome structure based on a cable dome tensioning and bearing whole process analysis, comprising: determining an initial geometry of a cable dome structure according to a construction geometry requirement and a construction function requirement; gradually increasing the prestressing force based on the initial prestressing force until a part of the cables of the cable dome structure exit the task, a ring cable reaches material yield, and the cable dome structure does not carry any load, and conducting a simulation analysis on elastoplasticity and geometrical non-linearity in a whole process of loading the structure by use of a load increment method; drawing a graph of structure displacement-whole bearing process and a graph of stress -whole bearing process; and determining the final design prestressing force of the cable dome structure according to a stable bearing capacity and a structural deformation capacity of the cable dome structure under the action of different times of initial prestressing force obtained based on the graph of structure displacement-whole bearing process and the graph of stress -whole bearing process.
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