【摘要】 采用有限元分离式实体对多层住宅复合结构进行建模分析,并将模拟结果与水平低周反复荷载试验结果进行对比。结果表明,该模型在裂缝出现的位置、顺序和试验构件基本一致,滞回曲线、骨架曲线和试验结果基本吻合,开裂荷载、屈服荷载和极限荷载的计算值与试验值也符合较好,这说明该有限元模型能够较准确模拟试验结果。在此基础上,研究了八字支撑、窗洞口上方局部设置人字支撑复合结构的抗震性能,得到了不同支撑复合结构的裂缝出现情况、破坏形态、滞回曲线、骨架曲线及承载力,并比较分析了其抗震能力,为复合结构的工程应用提供了理论依据。更多还原

【Abstract】 Finite element solid model is adopted to analysis a compound structure of multi-storey residence,and the simulated results are compared with experimental results under laterally reversed low-cyclic loading.Analysis results indicate that the positions and orders of cracks simulated by separate model coincide with those of tests.Hysteresis curves and skeleton curves are consistent with experimental values.The finite element results on cracking load,yield load and ultimate load are in good agreement with experimental results.Therefore,the finite element analytical model is able to simulate test results accurately.Moreover,seismic behavior of the compound structure with splayed braces and herringbone braces over windows are studied.The crack positions,hysteresis curves,skeleton curves and anti-seismic capacity of compound structures with different braces are obtained,the anti-seismic capacity of these compound structures are compared,which will provide a certain theoretical basis for engineering applications.更多还原