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高强钢组合K型偏心支撑框架耗能梁段和支撑采用Q345钢,其余构件采用Q460钢,不仅能有效减小构件截面、节约钢材、降低造价,而且有助于推广高强钢的应用。为了比较高强钢组合K型偏心支撑框架与Q345钢K型偏心支撑框架的抗震性能,在试验研究的基础上,设计两组共8个不同层数的高强钢组合K型偏心支撑框架与Q345钢K型偏心支撑框架,并分别对其进行非线性静力推覆分析和动力时程分析,对比分析两种结构形式的承载力、刚度、延性以及地震作用下层间变形能力和耗能梁段。结果表明:在满足抗震性能要求的前提下,相同设计条件下高强钢组合K型偏心支撑框架变形略差于Q345钢K型偏心支撑框架,但是其构件截面较小,可以节省钢材,降低工程造价,具有较高的经济效益。
The Q345 steel is used for the energy dissipation beam sections and supports for the K-type eccentric supporting frame of high-strength steel and the Q460 steel for the remaining components, which not only can effectively reduce the section of the components, save the steel, reduce the cost, but also promote the application of high-strength steel. In order to compare the seismic performance of high-strength steel K-type eccentric support frame and Q345 steel K-type eccentric support frame, based on the experimental study, two groups of eight high-strength steel combined with K-type eccentric support frame and Q345 steel K-type eccentrically braced frame, respectively, and its nonlinear static nappe analysis and dynamic time history analysis, comparative analysis of the two structural forms of bearing capacity, stiffness, ductility and seismic deformation under the inter-layer deformation capacity and energy beam section . The results show that under the same design conditions, the deformation of high strength steel K-type eccentric support frame is slightly worse than that of Q345 K-type eccentric support frame under the same design conditions. However, the cross section of the K-shaped eccentric support frame is small, which can save steel and reduce the construction cost , With high economic benefits.