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基于国内既有工艺研制了可应用于分层装配式支撑钢结构工业化建筑的新型套筒-扁钢支撑,并进行了4个特定规格和构造的足尺支撑单元循环往复加载试验。试验结果表明,该新型支撑在结构发生往复大变形条件下具有优良可靠的变形能力,可以保证体系的抗震安全性。根据简化计算模型建立了支撑单元的设计承载力表达式,指出支撑单元的层间位移角仅由支撑倾斜角与钢材屈服强度决定。在支撑弹性设计原则下,结构层间位移可以满足现行抗震规范的弹性变形限值要求。
Based on the existing technology in China, a new sleeve-flat steel support that can be applied to industrial buildings with stratified assembly support structure and steel structure was developed. Four full-scale support units with cyclic loading were tested. The test results show that the new type of support has excellent and reliable deformation ability under the conditions of large and complex deformation of the structure and can ensure the seismic safety of the system. According to the simplified calculation model, the design bearing capacity expression of supporting element is established. It is pointed out that the interlayer displacement angle of supporting element is only determined by the supporting angle of inclination and the yield strength of steel. Under the principle of elastic support design, the displacement between structural layers can meet the elastic deformation limit requirements of the current seismic code.